1 define([
  2 	'aloha/core',
  3 	'aloha/ecma5shims',
  4 	'util/maps',
  5 	'util/html',
  6 	'util/dom',
  7 	'jquery'
  8 ], function (
  9 	Aloha,
 10 	$_,
 11 	Maps,
 12 	Html,
 13 	Dom,
 14 	jQuery
 15 ) {
 16 	"use strict";
 17 
 18 	/**
 19 	 *
 20 	 * @param obj
 21 	 * @param attr
 22 	 * @returns {Boolean} true
 23 	 */
 24 	function hasAttribute(obj, attr) {
 25 		var native_method = obj.hasAttribute;
 26 		if (native_method) {
 27 			return obj.hasAttribute(attr);
 28 		}
 29 		return (typeof obj.attributes[attr] !== 'undefined');
 30 	}
 31 
 32 	/**
 33 	 * Insert the node `node` after `preceding`.
 34 	 *
 35 	 * @param {Element} node
 36 	 * @param {Element} preceding
 37 	 * @return {Element}
 38 	 */
 39 	function insertAfter(node, preceding) {
 40 		var next = preceding.nextSibling,
 41 		    parent = preceding.parentNode;
 42 		if (next) {
 43 			parent.insertBefore(node, next);
 44 		} else {
 45 			parent.appendChild(node);
 46 		}
 47 		return node;
 48 	}
 49 
 50 	/**
 51 	 * Splits text node `node` at the given text index.
 52 	 *
 53  54 	 * Note that we cannot use splitText() because it is bugridden in IE 9.
 55 	 *
 56 	 * Borrowed from rangy.
 57 	 *
 58 	 * @param {Element} node
 59 	 * @param {number} index
 60 	 * @return {Element}
 61 	 */
 62 	function splitText(node, index) {
 63 		var newNode = node.cloneNode(false);
 64 		newNode.deleteData(0, index);
 65 		node.deleteData(index, node.length - index);
 66 		insertAfter(newNode, node);
 67 		return newNode;
 68 	}
 69 
 70 	var htmlNamespace = "http://www.w3.org/1999/xhtml";
 71 
 72 	var cssStylingFlag = false;
 73 
 74 	// This is bad :(
 75 	var globalRange = null;
 76 
 77 	// Commands are stored in a dictionary where we call their actions and such
 78 	var commands = {};
 79 
 80 	///////////////////////////////////////////////////////////////////////////////
 81 	////////////////////////////// Utility functions //////////////////////////////
 82 	///////////////////////////////////////////////////////////////////////////////
 83 	//@{
 84 
 85 	// Opera 11 puts HTML elements in the null namespace, it seems.
 86 	function isHtmlNamespace(ns) {
 87 		return ns === null || !ns || ns === htmlNamespace;
 88 	}
 89 
 90 	// "An HTML element is an Element whose namespace is the HTML namespace."
 91 	//
 92 	// I allow an extra argument to more easily check whether something is a
 93 	// particular HTML element, like isNamedHtmlElement(node, 'OL').  It accepts arrays
 94 	// too, like isHtmlElementInArray(node, ["OL", "UL"]) to check if it's an ol or ul.
 95 	// TODO This function was prominent during profiling. Remove it
 96 	//      and replace with calls to isAnyHtmlElement, isNamedHtmlElement
 97 	//      and is isMappedHtmlElement.
 98 	function isHtmlElement_obsolete(node, tags) {
 99 		if (typeof tags == "string") {
100 			tags = [tags];
101 		}
102 		if (typeof tags == "object") {
103 			tags = $_(tags).map(function (tag) {
104 				return tag.toUpperCase();
105 			});
106 		}
107 		return node && node.nodeType == 1 && isHtmlNamespace(node.namespaceURI) && (typeof tags == "undefined" || $_(tags).indexOf(node.tagName) != -1);
108 	}
109 
110 	function isAnyHtmlElement(node) {
111 		return node && node.nodeType == 1 && isHtmlNamespace(node.namespaceURI);
112 	}
113 
114 	// name should be uppercase
115 	function isNamedHtmlElement(node, name) {
116 		return node && node.nodeType == 1 && isHtmlNamespace(node.namespaceURI)
117 		// This function is passed in a mix of upper and lower case names
118 			&& name.toUpperCase() === node.nodeName;
119 	}
120 
121 	// TODO remove when isHtmlElementInArray is removed
122 	function arrayContainsInsensitive(array, str) {
123 		var i, len;
124 		str = str.toUpperCase();
125 		for (i = 0, len = array.length; i < len; i++) {
126 			if (array[i].toUpperCase() === str) {
127 				return true;
128 			}
129 		}
130 		return false;
131 	}
132 	// TODO replace calls to this function with calls to isMappedHtmlElement()
133 	function isHtmlElementInArray(node, array) {
134 		return node && node.nodeType == 1 && isHtmlNamespace(node.namespaceURI)
135 		// This function is passed in a mix of upper and lower case names
136 			&& arrayContainsInsensitive(array, node.nodeName);
137 	}
138 
139 	// map must have all-uppercase keys
140 	function isMappedHtmlElement(node, map) {
141 		return node && node.nodeType == 1 && isHtmlNamespace(node.namespaceURI) && map[node.nodeName];
142 	}
143 
144 	/**
145 	 * Method to count the number of styles in the given style
146 	 */
147 	function getStyleLength(node) {
148 		var s;
149 		var styleLength = 0;
150 
151 		if (!node) {
152 			return 0;
153 		}
154 
155 		if (!node.style) {
156 			return 0;
157 		}
158 
159 		// some browsers support .length on styles
160 		if (typeof node.style.length !== 'undefined') {
161 			return node.style.length;
162 		}
163 
164 		/*jslint forin: true*/ //not sure whether node.style.hasOwnProperty is valid
165 		for (s in node.style) {
166 			if (node.style[s] && node.style[s] !== 0 && node.style[s] !== 'false') {
167 				styleLength++;
168 			}
169 		}
170 		/*jslint forin: false*/
171 
172 		return styleLength;
173 	}
174 
175 	function toArray(obj) {
176 		if (!obj) {
177 			return null;
178 		}
179 		var array = [],
180 			i,
181 		    l = obj.length;
182 		// iterate backwards ensuring that length is an UInt32
183 		i = l >>> 0;
184 		while (i--) {
185 			array[i] = obj[i];
186 		}
187 		return array;
188 	}
189 
190 	function nextNodeDescendants(node) {
191 		while (node && !node.nextSibling) {
192 			node = node.parentNode;
193 		}
194 		if (!node) {
195 			return null;
196 		}
197 		return node.nextSibling;
198 	}
199 
200 	function nextNode(node) {
201 		if (node.hasChildNodes()) {
202 			return node.firstChild;
203 		}
204 		return nextNodeDescendants(node);
205 	}
206 
207 	function previousNode(node) {
208 		if (node.previousSibling) {
209 			node = node.previousSibling;
210 			while (node.hasChildNodes()) {
211 				node = node.lastChild;
212 			}
213 			return node;
214 		}
215 		if (node.parentNode && node.parentNode.nodeType == $_.Node.ELEMENT_NODE) {
216 			return node.parentNode;
217 		}
218 		return null;
219 	}
220 
221 	/**
222 	 * Returns true if ancestor is an ancestor of descendant, false otherwise.
223 	 */
224 	function isAncestor(ancestor, descendant) {
225 		return ancestor && descendant && Boolean($_.compareDocumentPosition(ancestor, descendant) & $_.Node.DOCUMENT_POSITION_CONTAINED_BY);
226 	}
227 
228 	/**
229 	 * Returns true if ancestor is an ancestor of or equal to descendant, false
230 	 * otherwise.
231 	 */
232 	function isAncestorContainer(ancestor, descendant) {
233 		return (ancestor || descendant) && (ancestor == descendant || isAncestor(ancestor, descendant));
234 	}
235 
236 	/**
237 	 * Returns true if descendant is a descendant of ancestor, false otherwise.
238 	 */
239 	function isDescendant(descendant, ancestor) {
240 		return ancestor && descendant && Boolean($_.compareDocumentPosition(ancestor, descendant) & $_.Node.DOCUMENT_POSITION_CONTAINED_BY);
241 	}
242 
243 	/**
244 	 * Returns true if node1 is before node2 in tree order, false otherwise.
245 	 */
246 	function isBefore(node1, node2) {
247 		return Boolean($_.compareDocumentPosition(node1, node2) & $_.Node.DOCUMENT_POSITION_FOLLOWING);
248 	}
249 
250 	/**
251 	 * Returns true if node1 is after node2 in tree order, false otherwise.
252 	 */
253 	function isAfter(node1, node2) {
254 		return Boolean($_.compareDocumentPosition(node1, node2) & $_.Node.DOCUMENT_POSITION_PRECEDING);
255 	}
256 
257 	function getAncestors(node) {
258 		var ancestors = [];
259 260 		while (node.parentNode) {
261 			ancestors.unshift(node.parentNode);
262 			node = node.parentNode;
263 		}
264 		return ancestors;
265 	}
266 
267 	function getDescendants(node) {
268 		var descendants = [];
269 		var stop = nextNodeDescendants(node);
270 		while (null != (node = nextNode(node)) && node != stop) {
271 			descendants.push(node);
272 		}
273 		return descendants;
274 	}
275 
276 	function convertProperty(property) {
277 		// Special-case for now
278 		var map = {
279 			"fontFamily": "font-family",
280 			"fontSize": "font-size",
281 			"fontStyle": "font-style",
282 			"fontWeight": "font-weight",
283 			"textDecoration": "text-decoration"
284 		};
285 		if (typeof map[property] != "undefined") {
286 			return map[property];
287 		}
288 
289 		return property;
290 	}
291 
292 	// Return the <font size=X> value for the given CSS size, or undefined if there
293 	// is none.
294 	function cssSizeToLegacy(cssVal) {
295 		return {
296 			"xx-small": 1,
297 			"small": 2,
298 			"medium": 3,
299 			"large": 4,
300 			"x-large": 5,
301 			"xx-large": 6,
302 			"xxx-large": 7
303 		}[cssVal];
304 	}
305 
306 	// Return the CSS size given a legacy size.
307 	function legacySizeToCss(legacyVal) {
308 		return {
309 			1: "xx-small",
310 			2: "small",
311 			3: "medium",
312 			4: "large",
313 			5: "x-large",
314 			6: "xx-large",
315 			7: "xxx-large"
316 		}[legacyVal];
317 	}
318 
319 	// "the directionality" from HTML.  I don't bother caring about non-HTML
320 	// elements.
321 	//
322 	// "The directionality of an element is either 'ltr' or 'rtl', and is
323 	// determined as per the first appropriate set of steps from the following
324 	// list:"
325 	function getDirectionality(element) {
326 		// "If the element's dir attribute is in the ltr state
327 		//     The directionality of the element is 'ltr'."
328 		if (element.dir == "ltr") {
329 			return "ltr";
330 		}
331 
332 		// "If the element's dir attribute is in the rtl state
333 		//     The directionality of the element is 'rtl'."
334 		if (element.dir == "rtl") {
335 			return "rtl";
336 		}
337 
338 		// "If the element's dir attribute is in the auto state
339 		// "If the element is a bdi element and the dir attribute is not in a
340 		// defined state (i.e. it is not present or has an invalid value)
341 		//     [lots of complicated stuff]
342 		//
343 		// Skip this, since no browser implements it anyway.
344 
345 		// "If the element is a root element and the dir attribute is not in a
346 		// defined state (i.e. it is not present or has an invalid value)
347 		//     The directionality of the element is 'ltr'."
348 		if (!isAnyHtmlElement(element.parentNode)) {
349 			return "ltr";
350 		}
351 
352 		// "If the element has a parent element and the dir attribute is not in a
353 		// defined state (i.e. it is not present or has an invalid value)
354 		//     The directionality of the element is the same as the element's
355 		//     parent element's directionality."
356 		return getDirectionality(element.parentNode);
357 	}
358 
359 	//@}
360 
361 	///////////////////////////////////////////////////////////////////////////////
362 	///////////////////////////// DOM Range functions /////////////////////////////
363 	///////////////////////////////////////////////////////////////////////////////
364 	//@{
365 
366 	// "The length of a Node node is the following, depending on node:
367 	//
368 	// ProcessingInstruction
369 	// DocumentType
370 	//   Always 0.
371 	// Text
372 	// Comment
373 	//   node's length.
374 	// Any other node
375 	//   node's childNodes's length."
376 	function getNodeLength(node) {
377 		switch (node.nodeType) {
378 		case $_.Node.PROCESSING_INSTRUCTION_NODE:
379 		case $_.Node.DOCUMENT_TYPE_NODE:
380 			return 0;
381 
382 		case $_.Node.TEXT_NODE:
383 		case $_.Node.COMMENT_NODE:
384 			return node.length;
385 
386 		default:
387 			return node.childNodes.length;
388 		}
389 	}
390 
391 	/**
392 	 * The position of two boundary points relative to one another, as defined by
393 	 * DOM Range.
394 	 */
395 	function getPosition(nodeA, offsetA, nodeB, offsetB) {
396 		// "If node A is the same as node B, return equal if offset A equals offset
397 		// B, before if offset A is less than offset B, and after if offset A is
398 		// greater than offset B."
399 		if (nodeA == nodeB) {
400 			if (offsetA == offsetB) {
401 				return "equal";
402 			}
403 			if (offsetA < offsetB) {
404 				return "before";
405 			}
406 			if (offsetA > offsetB) {
407 				return "after";
408 			}
409 		}
410 
411 		var documentPosition = $_.compareDocumentPosition(nodeB, nodeA);
412 		// "If node A is after node B in tree order, compute the position of (node
413 		// B, offset B) relative to (node A, offset A). If it is before, return
414 		// after. If it is after, return before."
415 		if (documentPosition & $_.Node.DOCUMENT_POSITION_FOLLOWING) {
416 			var pos = getPosition(nodeB, offsetB, nodeA, offsetA);
417 			if (pos == "before") {
418 				return "after";
419 			}
420 			if (pos == "after") {
421 				return "before";
422 			}
423 		}
424 
425 		// "If node A is an ancestor of node B:"
426 		if (documentPosition & $_.Node.DOCUMENT_POSITION_CONTAINS) {
427 			// "Let child equal node B."
428 			var child = nodeB;
429 
430 			// "While child is not a child of node A, set child to its parent."
431 			while (child.parentNode != nodeA) {
432 				child = child.parentNode;
433 			}
434 
435 			// "If the index of child is less than offset A, return after."
436 			if (Dom.getIndexInParent(child) < offsetA) {
437 				return "after";
438 			}
439 		}
440 
441 		// "Return before."
442 		return "before";
443 	}
444 
445 	/**
446 	 * Returns the furthest ancestor of a Node as defined by DOM Range.
447 	 */
448 	function getFurthestAncestor(node) {
449 		var root = node;
450 		while (root.parentNode != null) {
451 			root = root.parentNode;
452 		}
453 		return root;
454 	}
455 
456 	/**
457 	 * "contained" as defined by DOM Range: "A Node node is contained in a range
458 	 * range if node's furthest ancestor is the same as range's root, and (node, 0)
459 	 * is after range's start, and (node, length of node) is before range's end."
460 	 */
461 	function isContained(node, range) {
462 		var pos1 = getPosition(node, 0, range.startContainer, range.startOffset);
463 		if (pos1 !== "after") {
464 			return false;
465 		}
466 		var pos2 = getPosition(node, getNodeLength(node), range.endContainer, range.endOffset);
467 		if (pos2 !== "before") {
468 			return false;
469 		}
470 		return getFurthestAncestor(node) == getFurthestAncestor(range.startContainer);
471 	}
472 
473 	/**
474 	 * Return all nodes contained in range that the provided function returns true
475 	 * for, omitting any with an ancestor already being returned.
476 	 */
477 	function getContainedNodes(range, condition) {
478 		if (typeof condition == "undefined") {
479 			condition = function () {
480 				return true;
481 			};
482 		}
483 		var node = range.startContainer;
484 		if (node.hasChildNodes() && range.startOffset < node.childNodes.length) {
485 			// A child is contained
486 			node = node.childNodes[range.startOffset];
487 		} else if (range.startOffset == getNodeLength(node)) {
488 			// No descendant can be contained
489 			node = nextNodeDescendants(node);
490 		} else {
491 			// No children; this node at least can't be contained
492 			node = nextNode(node);
493 		}
494 
495 		var stop = range.endContainer;
496 		if (stop.hasChildNodes() && range.endOffset < stop.childNodes.length) {
497 			// The node after the last contained node is a child
498 			stop = stop.childNodes[range.endOffset];
499 		} else {
500 			// This node and/or some of its children might be contained
501 			stop = nextNodeDescendants(stop);
502 		}
503 
504 		var nodeList = [];
505 		while (isBefore(node, stop)) {
506 			if (isContained(node, range) && condition(node)) {
507 				nodeList.push(node);
508 				node = nextNodeDescendants(node);
509 				continue;
510 			}
511 			node = nextNode(node);
512 		}
513 		return nodeList;
514 	}
515 
516 	/**
517 	 * As above, but includes nodes with an ancestor that's already been returned.
518 	 */
519 	function getAllContainedNodes(range, condition) {
520 		if (typeof condition == "undefined") {
521 			condition = function () {
522 				return true;
523 			};
524 		}
525 		var node = range.startContainer;
526 		if (node.hasChildNodes() && range.startOffset < node.childNodes.length) {
527 			// A child is contained
528 			node = node.childNodes[range.startOffset];
529 		} else if (range.startOffset == getNodeLength(node)) {
530 			// No descendant can be contained
531 			node = nextNodeDescendants(node);
532 		} else {
533 			// No children; this node at least can't be contained
534 			node = nextNode(node);
535 		}
536 
537 		var stop = range.endContainer;
538 		if (stop.hasChildNodes() && range.endOffset < stop.childNodes.length) {
539 			// The node after the last contained node is a child
540 			stop = stop.childNodes[range.endOffset];
541 		} else {
542 			// This node and/or some of its children might be contained
543 			stop = nextNodeDescendants(stop);
544 		}
545 
546 		var nodeList = [];
547 		while (isBefore(node, stop)) {
548 			if (isContained(node, range) && condition(node)) {
549 				nodeList.push(node);
550 			}
551 			node = nextNode(node);
552 		}
553 		return nodeList;
554 	}
555 
556 	// Returns either null, or something of the form rgb(x, y, z), or something of
557 	// the form rgb(x, y, z, w) with w != 0.
558 	function normalizeColor(color) {
559 		if (color.toLowerCase() == "currentcolor") {
560 			return null;
561 		}
562 
563 		var outerSpan = document.createElement("span");
564 		document.body.appendChild(outerSpan);
565 		outerSpan.style.color = "black";
566 
567 		var innerSpan = document.createElement("span");
568 		outerSpan.appendChild(innerSpan);
569 		innerSpan.style.color = color;
570 		color = $_.getComputedStyle(innerSpan).color;
571 
572 		if (color == "rgb(0, 0, 0)") {
573 			// Maybe it's really black, maybe it's invalid.
574 			outerSpan.color = "white";
575 			color = $_.getComputedStyle(innerSpan).color;
576 			if (color != "rgb(0, 0, 0)") {
577 				return null;
578 			}
579 		}
580 
581 		document.body.removeChild(outerSpan);
582 
583 		// I rely on the fact that browsers generally provide consistent syntax for
584 		// getComputedStyle(), although it's not standardized.  There are only two
585 		// exceptions I found:
586 		if (/^rgba\([0-9]+, [0-9]+, [0-9]+, 1\)$/.test(color)) {
587 			// IE10PP2 seems to do this sometimes.
588 			return color.replace("rgba", "rgb").replace(", 1)", ")");
589 		}
590 		if (color == "transparent") {
591 			// IE10PP2, Firefox 7.0a2, and Opera 11.50 all return "transparent" if
592 			// the specified value is "transparent".
593 			return "rgba(0, 0, 0, 0)";
594 		}
595 		return color;
596 597 	}
598 
599 	// Returns either null, or something of the form #xxxxxx, or the color itself
600 	// if it's a valid keyword.
601 	function parseSimpleColor(color) {
602 		color = color.toLowerCase();
603 		if ($_(["aliceblue", "antiquewhite", "aqua", "aquamarine", "azure", "beige", "bisque", "black", "blanchedalmond", "blue", "blueviolet", "brown", "burlywood", "cadetblue", "chartreuse", "chocolate", "coral", "cornflowerblue", "cornsilk", "crimson", "cyan", "darkblue", "darkcyan", "darkgoldenrod", "darkgray", "darkgreen", "darkgrey", "darkkhaki", "darkmagenta", "darkolivegreen", "darkorange", "darkorchid", "darkred", "darksalmon", "darkseagreen", "darkslateblue", "darkslategray", "darkslategrey", "darkturquoise", "darkviolet", "deeppink", "deepskyblue", "dimgray", "dimgrey", "dodgerblue", "firebrick", "floralwhite", "forestgreen", "fuchsia", "gainsboro", "ghostwhite", "gold", "goldenrod", "gray", "green", "greenyellow", "grey", "honeydew", "hotpink", "indianred", "indigo", "ivory", "khaki", "lavender", "lavenderblush", "lawngreen", "lemonchiffon", "lightblue", "lightcoral", "lightcyan", "lightgoldenrodyellow", "lightgray", "lightgreen", "lightgrey", "lightpink", "lightsalmon", "lightseagreen", "lightskyblue", "lightslategray", "lightslategrey", "lightsteelblue", "lightyellow", "lime", "limegreen", "linen", "magenta", "maroon", "mediumaquamarine", "mediumblue", "mediumorchid", "mediumpurple", "mediumseagreen", "mediumslateblue", "mediumspringgreen", "mediumturquoise", "mediumvioletred", "midnightblue", "mintcream", "mistyrose", "moccasin", "navajowhite", "navy", "oldlace", "olive", "olivedrab", "orange", "orangered", "orchid", "palegoldenrod", "palegreen", "paleturquoise", "palevioletred", "papayawhip", "peachpuff", "peru", "pink", "plum", "powderblue", "purple", "red", "rosybrown", "royalblue", "saddlebrown", "salmon", "sandybrown", "seagreen", "seashell", "sienna", "silver", "skyblue", "slateblue", "slategray", "slategrey", "snow", "springgreen", "steelblue", "tan", "teal", "thistle", "tomato", "turquoise", "violet", "wheat", "white", "whitesmoke", "yellow", "yellowgreen"]).indexOf(color) != -1) {
604 			return color;
605 		}
606 
607 		color = normalizeColor(color);
608 		var matches = /^rgb\(([0-9]+), ([0-9]+), ([0-9]+)\)$/.exec(color);
609 		if (matches) {
610 			return "#" + parseInt(matches[1], 10).toString(16).replace(/^.$/, "0$&") + parseInt(matches[2], 10).toString(16).replace(/^.$/, "0$&") + parseInt(matches[3], 10).toString(16).replace(/^.$/, "0$&");
611 		} else if (/^#[abcdef0123456789]+$/i.exec(color)) {
612 			// return hexadecimal color values (as returned by IE 7/8)
613 			return color;
614 		}
615 		return null;
616 	}
617 
618 	//@}
619 
620 	//////////////////////////////////////////////////////////////////////////////
621 	/////////////////////////// Edit command functions ///////////////////////////
622 	//////////////////////////////////////////////////////////////////////////////
623 
624 	/////////////////////////////////////////////////
625 	///// Methods of the HTMLDocument interface /////
626 	/////////////////////////////////////////////////
627 	//@{
628 
629 	var getStateOverride,
630 	    setStateOverride,
631 	    resetOverrides,
632 	    unsetStateOverride,
633 	    getValueOverride,
634 	    setValueOverride,
635 	    unsetValueOverride;
636 
637 	var executionStackDepth = 0;
638 
639 	// Helper function for fontSize's action plus queryOutputHelper.  It's just the
640 	// middle of fontSize's action, ripped out into its own function.
641 	function normalizeFontSize(value) {
642 		// "Strip leading and trailing whitespace from value."
643 		//
644 		// Cheap hack, not following the actual algorithm.
645 		value = $_(value).trim();
646 
647 		// "If value is a valid floating point number, or would be a valid
648 		// floating point number if a single leading "+" character were
649 		// stripped:"
650 		if (/^[\-+]?[0-9]+(\.[0-9]+)?([eE][\-+]?[0-9]+)?$/.test(value)) {
651 			var mode;
652 
653 			// "If the first character of value is "+", delete the character
654 			// and let mode be "relative-plus"."
655 			if (value[0] == "+") {
656 				value = value.slice(1);
657 				mode = "relative-plus";
658 				// "Otherwise, if the first character of value is "-", delete the
659 				// character and let mode be "relative-minus"."
660 			} else if (value[0] == "-") {
661 				value = value.slice(1);
662 				mode = "relative-minus";
663 				// "Otherwise, let mode be "absolute"."
664 			} else {
665 				mode = "absolute";
666 			}
667 
668 			// "Apply the rules for parsing non-negative integers to value, and
669 			// let number be the result."
670 			//
671 			// Another cheap hack.
672 			var num = parseInt(value, 10);
673 
674 			// "If mode is "relative-plus", add three to number."
675 			if (mode == "relative-plus") {
676 				num += 3;
677 			}
678 
679 			// "If mode is "relative-minus", negate number, then add three to
680 			// it."
681 			if (mode == "relative-minus") {
682 				num = 3 - num;
683 			}
684 
685 			// "If number is less than one, let number equal 1."
686 			if (num < 1) {
687 				num = 1;
688 			}
689 
690 			// "If number is greater than seven, let number equal 7."
691 			if (num > 7) {
692 				num = 7;
693 			}
694 
695 			// "Set value to the string here corresponding to number:" [table
696 			// omitted]
697 			value = {
698 				1: "xx-small",
699 				2: "small",
700 				3: "medium",
701 				4: "large",
702 				5: "x-large",
703 				6: "xx-large",
704 				7: "xxx-large"
705 			}[num];
706 		}
707 
708 		return value;
709 	}
710 
711 	function getLegacyFontSize(size) {
712 		// For convenience in other places in my code, I handle all sizes, not just
713 		// pixel sizes as the spec says.  This means pixel sizes have to be passed
714 		// in suffixed with "px", not as plain numbers.
715 		size = normalizeFontSize(size);
716 
717 		if (jQuery.inArray(size, ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) == -1 && !/^[0-9]+(\.[0-9]+)?(cm|mm|in|pt|pc|px)$/.test(size)) {
718 			// There is no sensible legacy size for things like "2em".
719 			return null;
720 		}
721 
722 		var font = document.createElement("font");
723 		document.body.appendChild(font);
724 		if (size == "xxx-large") {
725 			font.size = 7;
726 		} else {
727 			font.style.fontSize = size;
728 		}
729 		var pixelSize = parseInt($_.getComputedStyle(font).fontSize, 10);
730 		document.body.removeChild(font);
731 
732 		// "Let returned size be 1."
733 		var returnedSize = 1;
734 
735 		// "While returned size is less than 7:"
736 		while (returnedSize < 7) {
737 			// "Let lower bound be the resolved value of "font-size" in pixels
738 			// of a font element whose size attribute is set to returned size."
739 			font = document.createElement("font");
740 			font.size = returnedSize;
741 			document.body.appendChild(font);
742 			var lowerBound = parseInt($_.getComputedStyle(font).fontSize, 10);
743 
744 			// "Let upper bound be the resolved value of "font-size" in pixels
745 			// of a font element whose size attribute is set to one plus
746 			// returned size."
747 			font.size = 1 + returnedSize;
748 			var upperBound = parseInt($_.getComputedStyle(font).fontSize, 10);
749 			document.body.removeChild(font);
750 
751 			// "Let average be the average of upper bound and lower bound."
752 			var average = (upperBound + lowerBound) / 2;
753 
754 			// "If pixel size is less than average, return the one-element
755 			// string consisting of the digit returned size."
756 			if (pixelSize < average) {
757 				return String(returnedSize);
758 			}
759 
760 			// "Add one to returned size."
761 			returnedSize++;
762 		}
763 
764 		// "Return "7"."
765 		return "7";
766 	}
767 
768 	// Helper function for common behavior.
769 	function editCommandMethod(command, prop, range, callback) {
770 		var ret;
771 
772 		// Set up our global range magic, but only if we're the outermost function
773 		if (executionStackDepth === 0) {
774 			globalRange = range;
775 		}
776 
777 		executionStackDepth++;
778 		try {
779 			ret = callback();
780 		} catch (e) {
781 			executionStackDepth--;
782 			throw e;
783 		}
784 		executionStackDepth--;
785 		return ret;
786 	}
787 
788 	function myQueryCommandEnabled(command, range) {
789 		// "All of these methods must treat their command argument ASCII
790 		// case-insensitively."
791 		command = command.toLowerCase();
792 
793 		// "If command is not supported, raise a NOT_SUPPORTED_ERR exception."
794 		return editCommandMethod(command, "action", range, (function (command) {
795 			return function () {
796 				// "Among commands defined in this specification, those listed in
797 				// Miscellaneous commands are always enabled. The other commands defined
798 				// here are enabled if the active range is not null, and disabled
799 				// otherwise."
800 				return jQuery.inArray(command, ["copy", "cut", "paste", "selectall", "stylewithcss", "usecss"]) != -1 || range !== null;
801 			};
802 		}(command)));
803 	}
804 
805 	function setActiveRange(range) {
806 		var rangeObject = new window.GENTICS.Utils.RangeObject();
807 
808 		rangeObject.startContainer = range.startContainer;
809 		rangeObject.startOffset = range.startOffset;
810 		rangeObject.endContainer = range.endContainer;
811 		rangeObject.endOffset = range.endOffset;
812 
813 		rangeObject.select();
814 	}
815 
816 	function myExecCommand(commandArg, showUiArg, valueArg, range) {
817 		// "All of these methods must treat their command argument ASCII
818 		// case-insensitively."
819 		var command = commandArg.toLowerCase();
820 		var showUi = showUiArg;
821 		var value = valueArg;
822 
823 		// "If only one argument was provided, let show UI be false."
824 		//
825 		// If range was passed, I can't actually detect how many args were passed
826 		// . . .
827 		if (arguments.length == 1 || (arguments.length >= 4 && typeof showUi == "undefined")) {
828 			showUi = false;
829 		}
830 
831 		// "If only one or two arguments were provided, let value be the empty
832 		// string."
833 		if (arguments.length <= 2 || (arguments.length >= 4 && typeof value == "undefined")) {
834 			value = "";
835 		}
836 
837 		// "If command is not supported, raise a NOT_SUPPORTED_ERR exception."
838 		//
839 		// "If command has no action, raise an INVALID_ACCESS_ERR exception."
840 		return editCommandMethod(command, "action", range, (function (command, showUi, value) {
841 			return function () {
842 				// "If command is not enabled, return false."
843 				if (!myQueryCommandEnabled(command)) {
844 					return false;
845 				}
846 
847 				// "Take the action for command, passing value to the instructions as an
848 				// argument."
849 				commands[command].action(value, range);
850 
851 				// always fix the range after the command is complete
852 				setActiveRange(range);
853 
854 				// "Return true."
855 				return true;
856 			};
857 		}(command, showUi, value)));
858 	}
859 
860 	function myQueryCommandIndeterm(command, range) {
861 		// "All of these methods must treat their command argument ASCII
862 		// case-insensitively."
863 		command = command.toLowerCase();
864 
865 		// "If command is not supported, raise a NOT_SUPPORTED_ERR exception."
866 		//
867 		// "If command has no indeterminacy, raise an INVALID_ACCESS_ERR
868 		// exception."
869 		return editCommandMethod(command, "indeterm", range, (function (command) {
870 			return function () {
871 				// "If command is not enabled, return false."
872 				if (!myQueryCommandEnabled(command, range)) {
873 					return false;
874 				}
875 
876 				// "Return true if command is indeterminate, otherwise false."
877 				return commands[command].indeterm(range);
878 			};
879 		}(command)));
880 	}
881 
882 	function myQueryCommandState(command, range) {
883 		// "All of these methods must treat their command argument ASCII
884 		// case-insensitively."
885 		command = command.toLowerCase();
886 
887 		// "If command is not supported, raise a NOT_SUPPORTED_ERR exception."
888 		//
889 		// "If command has no state, raise an INVALID_ACCESS_ERR exception."
890 		return editCommandMethod(command, "state", range, (function (command) {
891 			return function () {
892 				// "If command is not enabled, return false."
893 				if (!myQueryCommandEnabled(command, range)) {
894 					return false;
895 				}
896 
897 				// "If the state override for command is set, return it."
898 				if (typeof getStateOverride(command, range) != "undefined") {
899 					return getStateOverride(command, range);
900 				}
901 
902 				// "Return true if command's state is true, otherwise false."
903 				return commands[command].state(range);
904 			};
905 		}(command)));
906 	}
907 
908 	// "When the queryCommandSupported(command) method on the HTMLDocument
909 	// interface is invoked, the user agent must return true if command is
910 	// supported, and false otherwise."
911 	function myQueryCommandSupported(command) {
912 		// "All of these methods must treat their command argument ASCII
913 		// case-insensitively."
914 		command = command.toLowerCase();
915 
916 		return commands.hasOwnProperty(command);
917 	}
918 
919 	function myQueryCommandValue(command, range) {
920 		// "All of these methods must treat their command argument ASCII
921 		// case-insensitively."
922 		command = command.toLowerCase();
923 
924 		return editCommandMethod(command, "value", range, function () {
925 			// "If command is not supported or has no value, return the empty string."
926 			if (!commands.hasOwnProperty(command) || !commands[command].hasOwnProperty("value")) {
927 				return "";
928 			}
929 
930 			// "If command is "fontSize" and its value override is set, convert the
931 			// value override to an integer number of pixels and return the legacy
932 			// font size for the result."
933 			if (command == "fontsize" && getValueOverride("fontsize", range) !== undefined) {
934 				return getLegacyFontSize(getValueOverride("fontsize", range));
935 			}
936 
937 			// "If the value override for command is set, return it."
938 			if (typeof getValueOverride(command, range) != "undefined") {
939 				return getValueOverride(command, range);
940 			}
941 
942 			// "Return command's value."
943 			return commands[command].value(range);
944 		});
945 	}
946 	//@}
947 
948 	//////////////////////////////
949 	///// Common definitions /////
950 	//////////////////////////////
951 	//@{
952 
953 	// "A prohibited paragraph child name is "address", "article", "aside",
954 	// "blockquote", "caption", "center", "col", "colgroup", "dd", "details",
955 	// "dir", "div", "dl", "dt", "fieldset", "figcaption", "figure", "footer",
956 	// "form", "h1", "h2", "h3", "h4", "h5", "h6", "header", "hgroup", "hr", "li",
957 	// "listing", "menu", "nav", "ol", "p", "plaintext", "pre", "section",
958 	// "summary", "table", "tbody", "td", "tfoot", "th", "thead", "tr", "ul", or
959 	// "xmp"."
960 	var prohibitedParagraphChildNamesMap = {
961 		"ADDRESS": true,
962 		"ARTICLE": true,
963 		"ASIDE": true,
964 		"BLOCKQUOTE": true,
965 		"CAPTION": true,
966 		"CENTER": true,
967 		"COL": true,
968 		"COLGROUP": true,
969 		"DD": true,
970 		"DETAILS": true,
971 		"DIR": true,
972 		"DIV": true,
973 		"DL": true,
974 		"DT": true,
975 		"FIELDSET": true,
976 		"FIGCAPTION": true,
977 		"FIGURE": true,
978 		"FOOTER": true,
979 		"FORM": true,
980 981 		"H1": true,
982 		"H2": true,
983 		"H3": true,
984 		"H4": true,
985 		"H5": true,
986 		"H6": true,
987 		"HEADER": true,
988 		"HGROUP": true,
989 		"HR": true,
990 		"LI": true,
991 		"LISTING": true,
992 		"MENU": true,
993 		"NAV": true,
994 		"OL": true,
995 		"P": true,
996 		"PLAINTEXT": true,
997 		"PRE": true,
998 		"SECTION": true,
999 		"SUMMARY": true,
1000 		"TABLE": true,
1001 		"TBODY": true,
1002 		"TD": true,
1003 		"TFOOT": true,
1004 		"TH": true,
1005 		"THEAD": true,
1006 		"TR": true,
1007 		"UL": true,
1008 		"XMP": true
1009 	};
1010 
1011 	// "A prohibited paragraph child is an HTML element whose local name is a
1012 	// prohibited paragraph child name."
1013 	function isProhibitedParagraphChild(node) {
1014 		return isMappedHtmlElement(node, prohibitedParagraphChildNamesMap);
1015 	}
1016 
1017 	var nonBlockDisplayValuesMap = {
1018 		"inline": true,
1019 		"inline-block": true,
1020 		"inline-table": true,
1021 		"none": true
1022 	};
1023 
1024 	// "A block node is either an Element whose "display" property does not have
1025 	// resolved value "inline" or "inline-block" or "inline-table" or "none", or a
1026 	// Document, or a DocumentFragment."
1027 	function isBlockNode(node) {
1028 		return node && ((node.nodeType == $_.Node.ELEMENT_NODE && !nonBlockDisplayValuesMap[$_.getComputedStyle(node).display]) || node.nodeType == $_.Node.DOCUMENT_NODE || node.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE);
1029 	}
1030 
1031 	// "An inline node is a node that is not a block node."
1032 	function isInlineNode(node) {
1033 		return node && !isBlockNode(node);
1034 	}
1035 
1036 	// "An editing host is a node that is either an Element with a contenteditable
1037 	// attribute set to the true state, or the Element child of a Document whose
1038 	// designMode is enabled."
1039 	function isEditingHost(node) {
1040 		return node && node.nodeType == $_.Node.ELEMENT_NODE && (node.contentEditable == "true" || (node.parentNode && node.parentNode.nodeType == $_.Node.DOCUMENT_NODE && node.parentNode.designMode == "on"));
1041 	}
1042 
1043 	// "Something is editable if it is a node which is not an editing host, does
1044 	// not have a contenteditable attribute set to the false state, and whose
1045 	// parent is an editing host or editable."
1046 	function isEditable(node) {
1047 		// This is slightly a lie, because we're excluding non-HTML elements with
1048 		// contentEditable attributes.
1049 		return node && !isEditingHost(node) && (node.nodeType != $_.Node.ELEMENT_NODE || node.contentEditable != "false" || jQuery(node).hasClass('aloha-table-wrapper')) && (isEditingHost(node.parentNode) || isEditable(node.parentNode));
1050 	}
1051 
1052 	// Helper function, not defined in the spec
1053 	function hasEditableDescendants(node) {
1054 		var i;
1055 		for (i = 0; i < node.childNodes.length; i++) {
1056 			if (isEditable(node.childNodes[i]) || hasEditableDescendants(node.childNodes[i])) {
1057 				return true;
1058 			}
1059 		}
1060 		return false;
1061 	}
1062 
1063 	// "The editing host of node is null if node is neither editable nor an editing
1064 	// host; node itself, if node is an editing host; or the nearest ancestor of
1065 	// node that is an editing host, if node is editable."
1066 	function getEditingHostOf(node) {
1067 		if (isEditingHost(node)) {
1068 			return node;
1069 		}
1070 		if (isEditable(node)) {
1071 			var ancestor = node.parentNode;
1072 			while (!isEditingHost(ancestor)) {
1073 				ancestor = ancestor.parentNode;
1074 			}
1075 			return ancestor;
1076 		}
1077 		return null;
1078 	}
1079 
1080 	// "Two nodes are in the same editing host if the editing host of the first is
1081 	// non-null and the same as the editing host of the second."
1082 	function inSameEditingHost(node1, node2) {
1083 		return getEditingHostOf(node1) && getEditingHostOf(node1) == getEditingHostOf(node2);
1084 	}
1085 
1086 	// "A collapsed line break is a br that begins a line box which has nothing
1087 	// else in it, and therefore has zero height."
1088 	function isCollapsedLineBreak(br) {
1089 		if (!isNamedHtmlElement(br, 'br')) {
1090 			return false;
1091 		}
1092 
1093 		// Add a zwsp after it and see if that changes the height of the nearest
1094 		// non-inline parent.  Note: this is not actually reliable, because the
1095 		// parent might have a fixed height or something.
1096 		var ref = br.parentNode;
1097 		while ($_.getComputedStyle(ref).display == "inline") {
1098 			ref = ref.parentNode;
1099 		}
1100 
1101 		var origStyle = {
1102 			height: ref.style.height,
1103 			maxHeight: ref.style.maxHeight,
1104 			minHeight: ref.style.minHeight
1105 		};
1106 
1107 		ref.style.height = 'auto';
1108 		ref.style.maxHeight = 'none';
1109 		if (!(jQuery.browser.msie && jQuery.browser.version < 8)) {
1110 			ref.style.minHeight = '0';
1111 		}
1112 		var space = document.createTextNode('\u200b');
1113 		var origHeight = ref.offsetHeight;
1114 		if (origHeight == 0) {
1115 			throw 'isCollapsedLineBreak: original height is zero, bug?';
1116 		}
1117 		br.parentNode.insertBefore(space, br.nextSibling);
1118 		var finalHeight = ref.offsetHeight;
1119 		space.parentNode.removeChild(space);
1120 
1121 		ref.style.height = origStyle.height;
1122 		ref.style.maxHeight = origStyle.maxHeight;
1123 		if (!(jQuery.browser.msie && jQuery.browser.version < 8)) {
1124 			ref.style.minHeight = origStyle.minHeight;
1125 		}
1126 
1127 		// Allow some leeway in case the zwsp didn't create a whole new line, but
1128 		// only made an existing line slightly higher.  Firefox 6.0a2 shows this
1129 		// behavior when the first line is bold.
1130 		return origHeight < finalHeight - 5;
1131 	}
1132 
1133 	// "An extraneous line break is a br that has no visual effect, in that
1134 	// removing it from the DOM would not change layout, except that a br that is
1135 	// the sole child of an li is not extraneous."
1136 	function isExtraneousLineBreak(br) {
1137 
1138 		if (!isNamedHtmlElement(br, 'br')) {
1139 			return false;
1140 		}
1141 
1142 		if (isNamedHtmlElement(br.parentNode, "li") && br.parentNode.childNodes.length == 1) {
1143 			return false;
1144 		}
1145 
1146 		// Make the line break disappear and see if that changes the block's
1147 		// height.  Yes, this is an absurd hack.  We have to reset height etc. on
1148 		// the reference node because otherwise its height won't change if it's not
1149 		// auto.
1150 		var ref = br.parentNode;
1151 		while ($_.getComputedStyle(ref).display == "inline") {
1152 			ref = ref.parentNode;
1153 		}
1154 
1155 		var origStyle = {
1156 			height: ref.style.height,
1157 			maxHeight: ref.style.maxHeight,
1158 			minHeight: ref.style.minHeight,
1159 			contentEditable: ref.contentEditable
1160 		};
1161 
1162 		ref.style.height = 'auto';
1163 		ref.style.maxHeight = 'none';
1164 		ref.style.minHeight = '0';
1165 		// IE7 would ignore display:none in contentEditable, so we temporarily set it to false
1166 		if (jQuery.browser.msie && jQuery.browser.version <= 7) {
1167 			ref.contentEditable = 'false';
1168 		}
1169 
1170 		var origHeight = ref.offsetHeight;
1171 		if (origHeight == 0) {
1172 			throw "isExtraneousLineBreak: original height is zero, bug?";
1173 		}
1174 
1175 		var origBrDisplay = br.style.display;
1176 		br.style.display = 'none';
1177 		var finalHeight = ref.offsetHeight;
1178 
1179 		// Restore original styles to the touched elements.
1180 		ref.style.height = origStyle.height;
1181 		ref.style.maxHeight = origStyle.maxHeight;
1182 		ref.style.minHeight = origStyle.minHeight;
1183 		// reset contentEditable for IE7
1184 		if (jQuery.browser.msie && jQuery.browser.version <= 7) {
1185 			ref.contentEditable = origStyle.contentEditable;
1186 		}
1187 		br.style.display = origBrDisplay;
1188 
1189 		// https://github.com/alohaeditor/Aloha-Editor/issues/516
1190 		// look like it works in msie > 7
1191 		/* if (jQuery.browser.msie && jQuery.browser.version < 8) {
1192 		   br.removeAttribute("style");
1193 		   ref.removeAttribute("style");
1194 1195 		   } */
1196 
1197 		return origHeight == finalHeight;
1198 	}
1199 
1200 	// "A whitespace node is either a Text node whose data is the empty string; or
1201 	// a Text node whose data consists only of one or more tabs (0x0009), line
1202 	// feeds (0x000A), carriage returns (0x000D), and/or spaces (0x0020), and whose
1203 	// parent is an Element whose resolved value for "white-space" is "normal" or
1204 	// "nowrap"; or a Text node whose data consists only of one or more tabs
1205 	// (0x0009), carriage returns (0x000D), and/or spaces (0x0020), and whose
1206 	// parent is an Element whose resolved value for "white-space" is "pre-line"."
1207 	function isWhitespaceNode(node) {
1208 		var nodeTypes = $_.Node;
1209 		if (node && node.nodeType === nodeTypes.TEXT_NODE) {
1210 			var parentNode = node.parentNode;
1211 
1212 			var nodeData = node.data;
1213 			if (jQuery.trim(nodeData).length === 0) {
1214 				return true;
1215 			} else if (parentNode && /^[\t\n\r ]+$/.test(nodeData)) {
1216 				if (parentNode.nodeType === nodeTypes.ELEMENT_NODE) {
1217 					if (jQuery.inArray($_.getComputedStyle(parentNode).whiteSpace, ["normal", "nowrap"]) !== -1) {
1218 						return true;
1219 					} else if ($_.getComputedStyle(parentNode).whiteSpace === "pre-line") {
1220 						return true;
1221 					}
1222 				} else if (parentNode.nodeType === nodeTypes.DOCUMENT_FRAGMENT_NODE) {
1223 					return true;
1224 				}
1225 			}
1226 		}
1227 		return false;
1228 	}
1229 
1230 	/**
1231 	 * Collapse sequences of ignorable whitespace (tab (0x0009), line feed (0x000A), carriage return (0x000D), space (0x0020)) to only one space.
1232 	 * Preserve the given range if necessary.
1233 	 * @param node text node
1234 	 * @param range range
1235 	 */
1236 	function collapseWhitespace(node, range) {
1237 		// "If node is neither editable nor an editing host, abort these steps."
1238 		if (!isEditable(node) && !isEditingHost(node)) {
1239 			return;
1240 		}
1241 
1242 		// if the given node is not a text node, return
1243 		if (!node || node.nodeType !== $_.Node.TEXT_NODE) {
1244 			return;
1245 		}
1246 
1247 		// if the node is in a pre or pre-wrap node, return
1248 		if (jQuery.inArray($_.getComputedStyle(node.parentNode).whiteSpace, ["pre", "pre-wrap"]) != -1) {
1249 			return;
1250 		}
1251 
1252 		// if the given node does not contain sequences of at least two consecutive ignorable whitespace characters, return
1253 		if (!/[\t\n\r ]{2,}/.test(node.data)) {
1254 			return;
1255 		}
1256 
1257 		var newData = '';
1258 		var correctStart = range.startContainer == node;
1259 		var correctEnd = range.endContainer == node;
1260 		var wsFound = false;
1261 		var i;
1262 
1263 		// iterate through the node data
1264 		for (i = 0; i < node.data.length; ++i) {
1265 			if (/[\t\n\r ]/.test(node.data.substr(i, 1))) {
1266 				// found a whitespace
1267 				if (!wsFound) {
1268 					// this is the first whitespace in the current sequence
1269 					// add a whitespace to the new data sequence
1270 					newData += ' ';
1271 					// remember that we found a whitespace
1272 					wsFound = true;
1273 				} else {
1274 					// this is not the first whitespace in the sequence, so omit this character
1275 					if (correctStart && newData.length < range.startOffset) {
1276 						range.startOffset--;
1277 					}
1278 					if (correctEnd && newData.length < range.endOffset) {
1279 						range.endOffset--;
1280 					}
1281 				}
1282 			} else {
1283 				newData += node.data.substr(i, 1);
1284 				wsFound = false;
1285 			}
1286 		}
1287 
1288 		// set the new data
1289 		node.data = newData;
1290 	}
1291 
1292 	// "node is a collapsed whitespace node if the following algorithm returns
1293 	// true:"
1294 	function isCollapsedWhitespaceNode(node) {
1295 		// "If node is not a whitespace node, return false."
1296 		if (!isWhitespaceNode(node)) {
1297 			return false;
1298 		}
1299 
1300 		// "If node's data is the empty string, return true."
1301 		if (node.data == "") {
1302 			return true;
1303 		}
1304 
1305 		// "Let ancestor be node's parent."
1306 		var ancestor = node.parentNode;
1307 
1308 		// "If ancestor is null, return true."
1309 		if (!ancestor) {
1310 			return true;
1311 		}
1312 
1313 		// "If the "display" property of some ancestor of node has resolved value
1314 		// "none", return true."
1315 		if ($_(getAncestors(node)).some(function (ancestor) { return ancestor.nodeType == $_.Node.ELEMENT_NODE && $_.getComputedStyle(ancestor).display == "none"; })) {
1316 			return true;
1317 		}
1318 
1319 		// "While ancestor is not a block node and its parent is not null, set
1320 		// ancestor to its parent."
1321 		while (!isBlockNode(ancestor) && ancestor.parentNode) {
1322 			ancestor = ancestor.parentNode;
1323 		}
1324 
1325 		// "Let reference be node."
1326 		var reference = node;
1327 
1328 		// "While reference is a descendant of ancestor:"
1329 		while (reference != ancestor) {
1330 			// "Let reference be the node before it in tree order."
1331 			reference = previousNode(reference);
1332 
1333 			// "If reference is a block node or a br, return true."
1334 			if (isBlockNode(reference) || isNamedHtmlElement(reference, 'br')) {
1335 				return true;
1336 			}
1337 
1338 			// "If reference is a Text node that is not a whitespace node, or is an
1339 			// img, break from this loop."
1340 			if ((reference.nodeType == $_.Node.TEXT_NODE && !isWhitespaceNode(reference)) || isNamedHtmlElement(reference, 'img')) {
1341 				break;
1342 			}
1343 		}
1344 
1345 		// "Let reference be node."
1346 		reference = node;
1347 
1348 		// "While reference is a descendant of ancestor:"
1349 		var stop = nextNodeDescendants(ancestor);
1350 		while (reference != stop) {
1351 			// "Let reference be the node after it in tree order, or null if there
1352 			// is no such node."
1353 			reference = nextNode(reference);
1354 
1355 			// "If reference is a block node or a br, return true."
1356 			if (isBlockNode(reference) || isNamedHtmlElement(reference, 'br')) {
1357 				return true;
1358 			}
1359 
1360 			// "If reference is a Text node that is not a whitespace node, or is an
1361 			// img, break from this loop."
1362 			if ((reference && reference.nodeType == $_.Node.TEXT_NODE && !isWhitespaceNode(reference)) || isNamedHtmlElement(reference, 'img')) {
1363 				break;
1364 			}
1365 		}
1366 
1367 		// "Return false."
1368 		return false;
1369 	}
1370 
1371 	// "Something is visible if it is a node that either is a block node, or a Text
1372 	// node that is not a collapsed whitespace node, or an img, or a br that is not
1373 	// an extraneous line break, or any node with a visible descendant; excluding
1374 	// any node with an ancestor container Element whose "display" property has
1375 	// resolved value "none"."
1376 	function isVisible(node) {
1377 		var i;
1378 
1379 		if (!node) {
1380 			return false;
1381 		}
1382 
1383 		if ($_(getAncestors(node).concat(node))
1384 			    .filter(function (node) { return node.nodeType == $_.Node.ELEMENT_NODE; }, true)
1385 			    .some(function (node) { return $_.getComputedStyle(node).display == "none"; })) {
1386 			return false;
1387 		}
1388 
1389 		if (isBlockNode(node) || (node.nodeType == $_.Node.TEXT_NODE && !isCollapsedWhitespaceNode(node)) || isNamedHtmlElement(node, 'img') || (isNamedHtmlElement(node, 'br') && !isExtraneousLineBreak(node))) {
1390 			return true;
1391 		}
1392 
1393 		for (i = 0; i < node.childNodes.length; i++) {
1394 			if (isVisible(node.childNodes[i])) {
1395 				return true;
1396 			}
1397 		}
1398 
1399 		return false;
1400 	}
1401 
1402 	// "Something is invisible if it is a node that is not visible."
1403 	function isInvisible(node) {
1404 		return node && !isVisible(node);
1405 1406 	}
1407 
1408 	// "A collapsed block prop is either a collapsed line break that is not an
1409 	// extraneous line break, or an Element that is an inline node and whose
1410 	// children are all either invisible or collapsed block props and that has at
1411 	// least one child that is a collapsed block prop."
1412 	function isCollapsedBlockProp(node) {
1413 		var i;
1414 
1415 		if (isCollapsedLineBreak(node) && !isExtraneousLineBreak(node)) {
1416 			return true;
1417 		}
1418 
1419 		if (!isInlineNode(node) || node.nodeType != $_.Node.ELEMENT_NODE) {
1420 			return false;
1421 		}
1422 
1423 		var hasCollapsedBlockPropChild = false;
1424 		for (i = 0; i < node.childNodes.length; i++) {
1425 			if (!isInvisible(node.childNodes[i]) && !isCollapsedBlockProp(node.childNodes[i])) {
1426 				return false;
1427 			}
1428 			if (isCollapsedBlockProp(node.childNodes[i])) {
1429 				hasCollapsedBlockPropChild = true;
1430 			}
1431 		}
1432 
1433 		return hasCollapsedBlockPropChild;
1434 	}
1435 
1436 	/**
1437 	 * Checks whether the given node is a visible text node.
1438 	 *
1439 	 * @param {HTMLElement} node
1440 	 * @return {Boolean} True if `node` is a visible text node.
1441 	 */
1442 	function isInvisibleTextNode(node) {
1443 		if (node && node.nodeType !== $_.Node.TEXT_NODE) {
1444 			return false;
1445 		}
1446 		var offset = 0;
1447 		var data = node.data;
1448 		var len = data.length;
1449 		while (offset < len && data.charAt(offset) === '\u200b') {
1450 			offset++;
1451 		}
1452 		return offset === len;
1453 	}
1454 
1455 	/**
1456 	 * Complement of isInvisibleTextNode().
1457 	 *
1458 	 * @param {HTMLElement} node
1459 	 * @return {Boolean} True if `node` is anything but an invisible text node.
1460 	 */
1461 	function isNotInvisibleTextNode(node) {
1462 		return !isInvisibleTextNode(node);
1463 	}
1464 
1465 	/**
1466 	 * Checks whether the given node is a otherwise empty block-level element
1467 	 * containing a propping <br> element.
1468 	 *
1469 	 * @param {HTMLElement} node
1470 	 * @return {Boolean} True if `node` is a propped up block-level element.
1471 	 */
1472 	function isProppedBlock(node) {
1473 		if (!Html.isBlock(node)) {
1474 			return false;
1475 		}
1476 		var child = Html.findNodeRight(node.lastChild, isVisible);
1477 		return (
1478 			child
1479 			&& 'br' === child.nodeName.toLowerCase()
1480 			&& !Html.findNodeRight(child.previousSibling, isVisible)
1481 		);
1482 	}
1483 
1484 	/**
1485 	 * Checks whether the given node is a empty element, or an element that
1486 	 * would otherwise be empty except for a propping <br>, or an element
1487 	 * containing only invisible text nodes.
1488 	 *
1489 	 * @param {HTMLElement} node
1490 	 * @return {Boolean} True if `node` can be considered empty.
1491 	 */
1492 	function isEmptyNode(node) {
1493 		return (
1494 			!node.hasChildNodes()
1495 			|| isProppedBlock(node)
1496 			|| !Html.findNodeRight(node.lastChild, isNotInvisibleTextNode)
1497 		);
1498 	}
1499 
1500 	/**
1501 	 * Check if the given node is a empty element which is the only
1502 	 * immediate child of a editing host.
1503 	 *
1504 	 * @param {HTMLElement} node
1505 	 * @return {Boolean} True if `node` can be regarded as empty and the
1506 	 *                   only immediate child of its parent editing host.
1507 	 */
1508 	function isEmptyOnlyChildOfEditingHost(node) {
1509 		return (
1510 			node
1511 				&& isEmptyNode(node)
1512 					&& isEditingHost(node.parentNode)
1513 						&& !node.previousSibling
1514 							&& !node.nextSibling
1515 		);
1516 	}
1517 
1518 	/**
1519 	 * Remove the given node and return the position from where it was
1520 	 * removed.
1521 	 *
1522 	 * @param {HTMLElement} node Element to remove from DOM
1523 	 * @return {object} Object containing node and offset index.
1524 	 */
1525 	function removeNode(node) {
1526 		var ancestor = node.parentNode;
1527 		var offset = Dom.getIndexInParent(node);
1528 		ancestor.removeChild(node);
1529 		return {
1530 			node: ancestor,
1531 			offset: offset
1532 		};
1533 	}
1534 
1535 	// Please note: This method is deprecated and will be removed.
1536 	// Every command should use the value and range parameter.
1537 	//
1538 	// "The active range is the first range in the Selection given by calling
1539 	// getSelection() on the context object, or null if there is no such range."
1540 	//
1541 	// We cheat and return globalRange if that's defined.  We also ensure that the
1542 	// active range meets the requirements that selection boundary points are
1543 	// supposed to meet, i.e., that the nodes are both Text or Element nodes that
1544 	// descend from a Document.
1545 	function getActiveRange() {
1546 		var ret;
1547 		if (globalRange) {
1548 			ret = globalRange;
1549 		} else if (Aloha.getSelection().rangeCount) {
1550 			ret = Aloha.getSelection().getRangeAt(0);
1551 		} else {
1552 			return null;
1553 		}
1554 		if (jQuery.inArray(ret.startContainer.nodeType, [$_.Node.TEXT_NODE, $_.Node.ELEMENT_NODE]) == -1 || jQuery.inArray(ret.endContainer.nodeType, [$_.Node.TEXT_NODE, $_.Node.ELEMENT_NODE]) == -1 || !ret.startContainer.ownerDocument || !ret.endContainer.ownerDocument || !isDescendant(ret.startContainer, ret.startContainer.ownerDocument) || !isDescendant(ret.endContainer, ret.endContainer.ownerDocument)) {
1555 			throw "Invalid active range; test bug?";
1556 		}
1557 		return ret;
1558 	}
1559 
1560 	// "For some commands, each HTMLDocument must have a boolean state override
1561 	// and/or a string value override. These do not change the command's state or
1562 	// value, but change the way some algorithms behave, as specified in those
1563 	// algorithms' definitions. Initially, both must be unset for every command.
1564 	// Whenever the number of ranges in the Selection changes to something
1565 	// different, and whenever a boundary point of the range at a given index in
1566 	// the Selection changes to something different, the state override and value
1567 	// override must be unset for every command."
1568 	//
1569 	// We implement this crudely by using setters and getters.  To verify that the
1570 	// selection hasn't changed, we copy the active range and just check the
1571 	// endpoints match.  This isn't really correct, but it's good enough for us.
1572 	// Unset state/value overrides are undefined.  We put everything in a function
1573 	// so no one can access anything except via the provided functions, since
1574 	// otherwise callers might mistakenly use outdated overrides (if the selection
1575 	// has changed).
1576 	(function () {
1577 		var stateOverrides = {};
1578 		var valueOverrides = {};
1579 		var storedRange = null;
1580 
1581 		resetOverrides = function (range) {
1582 			if (!storedRange
1583 				    || storedRange.startContainer != range.startContainer
1584 				    || storedRange.endContainer != range.endContainer
1585 				    || storedRange.startOffset != range.startOffset
1586 				    || storedRange.endOffset != range.endOffset) {
1587 				storedRange = {
1588 					startContainer: range.startContainer,
1589 					endContainer: range.endContainer,
1590 					startOffset: range.startOffset,
1591 					endOffset: range.endOffset
1592 				};
1593 				if (!Maps.isEmpty(stateOverrides) || !Maps.isEmpty(valueOverrides)) {
1594 					stateOverrides = {};
1595 					valueOverrides = {};
1596 					return true;
1597 				}
1598 			}
1599 			return false;
1600 		};
1601 
1602 		getStateOverride = function (command, range) {
1603 			resetOverrides(range);
1604 			return stateOverrides[command];
1605 		};
1606 
1607 		setStateOverride = function (command, newState, range) {
1608 			resetOverrides(range);
1609 			stateOverrides[command] = newState;
1610 		};
1611 
1612 		unsetStateOverride = function (command, range) {
1613 			resetOverrides(range);
1614 			delete stateOverrides[command];
1615 		};
1616 
1617 		getValueOverride = function (command, range) {
1618 			resetOverrides(range);
1619 			return valueOverrides[command];
1620 		};
1621 
1622 		// "The value override for the backColor command must be the same as the
1623 		// value override for the hiliteColor command, such that setting one sets
1624 		// the other to the same thing and unsetting one unsets the other."
1625 		setValueOverride = function (command, newValue, range) {
1626 			resetOverrides(range);
1627 			valueOverrides[command] = newValue;
1628 			if (command == "backcolor") {
1629 				valueOverrides.hilitecolor = newValue;
1630 			} else if (command == "hilitecolor") {
1631 				valueOverrides.backcolor = newValue;
1632 			}
1633 		};
1634 
1635 		unsetValueOverride = function (command, range) {
1636 			resetOverrides(range);
1637 			delete valueOverrides[command];
1638 			if (command == "backcolor") {
1639 				delete valueOverrides.hilitecolor;
1640 			} else if (command == "hilitecolor") {
1641 				delete valueOverrides.backcolor;
1642 			}
1643 		};
1644 	}());
1645 
1646 	//@}
1647 
1648 	/////////////////////////////
1649 	///// Common algorithms /////
1650 	/////////////////////////////
1651 
1652 	///// Assorted common algorithms /////
1653 	//@{
1654 
1655 	function movePreservingRanges(node, newParent, newIndex, range) {
1656 		// For convenience, I allow newIndex to be -1 to mean "insert at the end".
1657 		if (newIndex == -1) {
1658 			newIndex = newParent.childNodes.length;
1659 		}
1660 
1661 		// "When the user agent is to move a Node to a new location, preserving
1662 		// ranges, it must remove the Node from its original parent (if any), then
1663 		// insert it in the new location. In doing so, however, it must ignore the
1664 		// regular range mutation rules, and instead follow these rules:"
1665 
1666 		// "Let node be the moved Node, old parent and old index be the old parent
1667 		// (which may be null) and index, and new parent and new index be the new
1668 		// parent and index."
1669 		var oldParent = node.parentNode;
1670 		var oldIndex = Dom.getIndexInParent(node);
1671 		var i;
1672 
1673 		// We only even attempt to preserve the global range object and the ranges
1674 		// in the selection, not every range out there (the latter is probably
1675 		// impossible).
1676 		var ranges = [range];
1677 		for (i = 0; i < Aloha.getSelection().rangeCount; i++) {
1678 			ranges.push(Aloha.getSelection().getRangeAt(i));
1679 		}
1680 		var boundaryPoints = [];
1681 		$_(ranges).forEach(function (range) {
1682 			boundaryPoints.push([range.startContainer, range.startOffset]);
1683 			boundaryPoints.push([range.endContainer, range.endOffset]);
1684 		});
1685 
1686 		$_(boundaryPoints).forEach(function (boundaryPoint) {
1687 			// "If a boundary point's node is the same as or a descendant of node,
1688 			// leave it unchanged, so it moves to the new location."
1689 			//
1690 			// No modifications necessary.
1691 
1692 			// "If a boundary point's node is new parent and its offset is greater
1693 			// than new index, add one to its offset."
1694 			if (boundaryPoint[0] == newParent && boundaryPoint[1] > newIndex) {
1695 				boundaryPoint[1]++;
1696 			}
1697 
1698 			// "If a boundary point's node is old parent and its offset is old index or
1699 			// old index + 1, set its node to new parent and add new index − old index
1700 			// to its offset."
1701 			if (boundaryPoint[0] == oldParent && (boundaryPoint[1] == oldIndex || boundaryPoint[1] == oldIndex + 1)) {
1702 				boundaryPoint[0] = newParent;
1703 				boundaryPoint[1] += newIndex - oldIndex;
1704 			}
1705 
1706 			// "If a boundary point's node is old parent and its offset is greater than
1707 			// old index + 1, subtract one from its offset."
1708 			if (boundaryPoint[0] == oldParent && boundaryPoint[1] > oldIndex + 1) {
1709 				boundaryPoint[1]--;
1710 			}
1711 		});
1712 
1713 		// Now actually move it and preserve the ranges.
1714 		if (newParent.childNodes.length == newIndex) {
1715 			newParent.appendChild(node);
1716 		} else {
1717 			newParent.insertBefore(node, newParent.childNodes[newIndex]);
1718 		}
1719 
1720 		// if we're off actual node boundaries this implies that the move was
1721 		// part of a deletion process (backspace). If that's the case we
1722 		// attempt to fix this by restoring the range to the first index of
1723 		// the node that has been moved
1724 		var newRange = null;
1725 		if (boundaryPoints[0][1] > boundaryPoints[0][0].childNodes.length && boundaryPoints[1][1] > boundaryPoints[1][0].childNodes.length) {
1726 			range.setStart(node, 0);
1727 			range.setEnd(node, 0);
1728 		} else {
1729 			range.setStart(boundaryPoints[0][0], boundaryPoints[0][1]);
1730 			range.setEnd(boundaryPoints[1][0], boundaryPoints[1][1]);
1731 
1732 			Aloha.getSelection().removeAllRanges();
1733 			for (i = 1; i < ranges.length; i++) {
1734 				newRange = Aloha.createRange();
1735 				newRange.setStart(boundaryPoints[2 * i][0], boundaryPoints[2 * i][1]);
1736 				newRange.setEnd(boundaryPoints[2 * i + 1][0], boundaryPoints[2 * i + 1][1]);
1737 				Aloha.getSelection().addRange(newRange);
1738 			}
1739 			if (newRange) {
1740 				range = newRange;
1741 			}
1742 		}
1743 	}
1744 
1745 	/**
1746 	 * Copy all non empty attributes from an existing to a new element
1747 	 *
1748 	 * @param {dom} element The source DOM element
1749 	 * @param {dom} newElement The new DOM element which will get the attributes of the source DOM element
1750 	 * @return void
1751 	 */
1752 	function copyAttributes(element, newElement) {
1753 
1754 		// This is an IE7 workaround. We identified three places that were connected
1755 		// to the mysterious ie7 crash:
1756 		// 1. Add attribute to dom element (Initialization of jquery-ui sortable)
1757 		// 2. Access the jquery expando attribute. Just reading the name is
1758 		//    sufficient to make the browser vulnerable for the crash (Press enter)
1759 		// 3. On editable blur the Aloha.editables[0].getContents(); gets invoked.
1760 		//    This invokation somehow crashes the ie7. We assume that the access of
1761 		//    shared expando attribute updates internal references which are not
1762 		//    correclty handled during clone();
1763 		if (jQuery.browser.msie && jQuery.browser.version >= 7 && typeof element.attributes[jQuery.expando] !== 'undefined') {
1764 			jQuery(element).removeAttr(jQuery.expando);
1765 		}
1766 
1767 		var attrs = element.attributes;
1768 		var i;
1769 		for (i = 0; i < attrs.length; i++) {
1770 			var attr = attrs[i];
1771 			// attr.specified is an IE specific check to exclude attributes that were never really set.
1772 			if (typeof attr.specified === "undefined" || attr.specified) {
1773 				if (typeof newElement.setAttributeNS === 'function') {
1774 					newElement.setAttributeNS(attr.namespaceURI, attr.name, attr.value);
1775 				} else {
1776 					// fixes https://github.com/alohaeditor/Aloha-Editor/issues/515
1777 					newElement.setAttribute(attr.name, attr.value);
1778 				}
1779 			}
1780 		}
1781 	}
1782 
1783 	function setTagName(element, newName, range) {
1784 		// "If element is an HTML element with local name equal to new name, return
1785 		// element."
1786 		if (isNamedHtmlElement(element, newName)) {
1787 			return element;
1788 		}
1789 
1790 		// "If element's parent is null, return element."
1791 		if (!element.parentNode) {
1792 			return element;
1793 		}
1794 
1795 		// "Let replacement element be the result of calling createElement(new
1796 		// name) on the ownerDocument of element."
1797 		var replacementElement = element.ownerDocument.createElement(newName);
1798 
1799 		// "Insert replacement element into element's parent immediately before
1800 		// element."
1801 		element.parentNode.insertBefore(replacementElement, element);
1802 
1803 		// "Copy all attributes of element to replacement element, in order."
1804 		copyAttributes(element, replacementElement);
1805 
1806 		// "While element has children, append the first child of element as the
1807 		// last child of replacement element, preserving ranges."
1808 		while (element.childNodes.length) {
1809 			movePreservingRanges(element.firstChild, replacementElement, replacementElement.childNodes.length, range);
1810 		}
1811 
1812 		// "Remove element from its parent."
1813 		element.parentNode.removeChild(element);
1814 
1815 		// if the range still uses the old element, we modify it to the new one
1816 		if (range.startContainer === element) {
1817 			range.startContainer = replacementElement;
1818 		}
1819 		if (range.endContainer === element) {
1820 			range.endContainer = replacementElement;
1821 		}
1822 
1823 		// "Return replacement element."
1824 		return replacementElement;
1825 	}
1826 
1827 	function removeExtraneousLineBreaksBefore(node) {
1828 		// "Let ref be the previousSibling of node."
1829 		var ref = node.previousSibling;
1830 
1831 		// "If ref is null, abort these steps."
1832 		if (!ref) {
1833 			return;
1834 		}
1835 
1836 		// "While ref has children, set ref to its lastChild."
1837 		while (ref.hasChildNodes()) {
1838 			ref = ref.lastChild;
1839 		}
1840 
1841 		// "While ref is invisible but not an extraneous line break, and ref does
1842 		// not equal node's parent, set ref to the node before it in tree order."
1843 		while (isInvisible(ref) && !isExtraneousLineBreak(ref) && ref != node.parentNode) {
1844 			ref = previousNode(ref);
1845 		}
1846 
1847 		// "If ref is an editable extraneous line break, remove it from its
1848 		// parent."
1849 		if (isEditable(ref) && isExtraneousLineBreak(ref)) {
1850 			ref.parentNode.removeChild(ref);
1851 		}
1852 	}
1853 
1854 	function removeExtraneousLineBreaksAtTheEndOf(node) {
1855 		// "Let ref be node."
1856 		var ref = node;
1857 
1858 		// "While ref has children, set ref to its lastChild."
1859 		while (ref.hasChildNodes()) {
1860 			ref = ref.lastChild;
1861 		}
1862 
1863 		// "While ref is invisible but not an extraneous line break, and ref does
1864 		// not equal node, set ref to the node before it in tree order."
1865 		while (isInvisible(ref) && !isExtraneousLineBreak(ref) && ref != node) {
1866 			ref = previousNode(ref);
1867 1868 		}
1869 
1870 		// "If ref is an editable extraneous line break, remove it from its
1871 		// parent."
1872 		if (isEditable(ref) && isExtraneousLineBreak(ref)) {
1873 			ref.parentNode.removeChild(ref);
1874 		}
1875 	}
1876 
1877 	// "To remove extraneous line breaks from a node, first remove extraneous line
1878 	// breaks before it, then remove extraneous line breaks at the end of it."
1879 	function removeExtraneousLineBreaksFrom(node) {
1880 		removeExtraneousLineBreaksBefore(node);
1881 		removeExtraneousLineBreaksAtTheEndOf(node);
1882 	}
1883 
1884 	//@}
1885 	///// Wrapping a list of nodes /////
1886 	//@{
1887 
1888 	function wrap(nodeList, siblingCriteria, newParentInstructions, range) {
1889 		var i;
1890 
1891 		// "If not provided, sibling criteria returns false and new parent
1892 		// instructions returns null."
1893 		if (typeof siblingCriteria == "undefined") {
1894 			siblingCriteria = function () {
1895 				return false;
1896 			};
1897 		}
1898 		if (typeof newParentInstructions == "undefined") {
1899 			newParentInstructions = function () {
1900 1901 				return null;
1902 			};
1903 		}
1904 
1905 		// "If node list is empty, or the first member of node list is not
1906 		// editable, return null and abort these steps."
1907 		if (!nodeList.length || !isEditable(nodeList[0])) {
1908 			return null;
1909 		}
1910 
1911 		// "If node list's last member is an inline node that's not a br, and node
1912 		// list's last member's nextSibling is a br, append that br to node list."
1913 		if (isInlineNode(nodeList[nodeList.length - 1]) && !isNamedHtmlElement(nodeList[nodeList.length - 1], "br") && isNamedHtmlElement(nodeList[nodeList.length - 1].nextSibling, "br")) {
1914 			nodeList.push(nodeList[nodeList.length - 1].nextSibling);
1915 		}
1916 
1917 		// "If the previousSibling of the first member of node list is editable and
1918 		// running sibling criteria on it returns true, let new parent be the
1919 		// previousSibling of the first member of node list."
1920 		var newParent;
1921 		if (isEditable(nodeList[0].previousSibling) && siblingCriteria(nodeList[0].previousSibling)) {
1922 			newParent = nodeList[0].previousSibling;
1923 
1924 			// "Otherwise, if the nextSibling of the last member of node list is
1925 			// editable and running sibling criteria on it returns true, let new parent
1926 			// be the nextSibling of the last member of node list."
1927 		} else if (isEditable(nodeList[nodeList.length - 1].nextSibling) && siblingCriteria(nodeList[nodeList.length - 1].nextSibling)) {
1928 			newParent = nodeList[nodeList.length - 1].nextSibling;
1929 
1930 			// "Otherwise, run new parent instructions, and let new parent be the
1931 			// result."
1932 		} else {
1933 			newParent = newParentInstructions();
1934 		}
1935 
1936 		// "If new parent is null, abort these steps and return null."
1937 1938 		if (!newParent) {
1939 			return null;
1940 		}
1941 
1942 		// "If new parent's parent is null:"
1943 		if (!newParent.parentNode) {
1944 			// "Insert new parent into the parent of the first member of node list
1945 			// immediately before the first member of node list."
1946 			nodeList[0].parentNode.insertBefore(newParent, nodeList[0]);
1947 
1948 			// "If any range has a boundary point with node equal to the parent of
1949 			// new parent and offset equal to the index of new parent, add one to
1950 			// that boundary point's offset."
1951 			//
1952 			// Try to fix range
1953 			var startContainer = range.startContainer,
1954 				startOffset = range.startOffset,
1955 				endContainer = range.endContainer,
1956 				endOffset = range.endOffset,
1957 			    newParentIndex = Dom.getIndexInParent(newParent);
1958 
1959 			if (startOffset >= newParentIndex && startContainer == newParent.parentNode) {
1960 				range.setStart(startContainer, startOffset + 1);
1961 			}
1962 			if (endOffset >= newParentIndex && endContainer == newParent.parentNode) {
1963 				range.setEnd(endContainer, endOffset + 1);
1964 			}
1965 
1966 			// Only try to fix the global range. TODO remove globalRange here
1967 			if (globalRange && globalRange !== range) {
1968 				startContainer = globalRange.startContainer;
1969 				startOffset = globalRange.startOffset;
1970 				endContainer = globalRange.endContainer;
1971 				endOffset = globalRange.endOffset;
1972 				if (startContainer == newParent.parentNode && startOffset >= newParentIndex) {
1973 					globalRange.setStart(startContainer, startOffset + 1);
1974 				}
1975 				if (endContainer == newParent.parentNode && endOffset >= newParentIndex) {
1976 					globalRange.setEnd(endContainer, endOffset + 1);
1977 				}
1978 			}
1979 		}
1980 
1981 		// "Let original parent be the parent of the first member of node list."
1982 		var originalParent = nodeList[0].parentNode;
1983 
1984 		// "If new parent is before the first member of node list in tree order:"
1985 		if (isBefore(newParent, nodeList[0])) {
1986 			// "If new parent is not an inline node, but the last child of new
1987 			// parent and the first member of node list are both inline nodes, and
1988 			// the last child of new parent is not a br, call createElement("br")
1989 1990 			// on the ownerDocument of new parent and append the result as the last
1991 			// child of new parent."
1992 			if (!isInlineNode(newParent) && isInlineNode(newParent.lastChild) && isInlineNode(nodeList[0]) && !isNamedHtmlElement(newParent.lastChild, "BR")) {
1993 				newParent.appendChild(newParent.ownerDocument.createElement("br"));
1994 			}
1995 
1996 			// "For each node in node list, append node as the last child of new
1997 			// parent, preserving ranges."
1998 			for (i = 0; i < nodeList.length; i++) {
1999 				movePreservingRanges(nodeList[i], newParent, -1, range);
2000 			}
2001 
2002 			// "Otherwise:"
2003 		} else {
2004 			// "If new parent is not an inline node, but the first child of new
2005 			// parent and the last member of node list are both inline nodes, and
2006 			// the last member of node list is not a br, call createElement("br")
2007 			// on the ownerDocument of new parent and insert the result as the
2008 			// first child of new parent."
2009 			if (!isInlineNode(newParent) && isInlineNode(newParent.firstChild) && isInlineNode(nodeList[nodeList.length - 1]) && !isNamedHtmlElement(nodeList[nodeList.length - 1], "BR")) {
2010 				newParent.insertBefore(newParent.ownerDocument.createElement("br"), newParent.firstChild);
2011 			}
2012 
2013 			// "For each node in node list, in reverse order, insert node as the
2014 			// first child of new parent, preserving ranges."
2015 			for (i = nodeList.length - 1; i >= 0; i--) {
2016 				movePreservingRanges(nodeList[i], newParent, 0, range);
2017 			}
2018 		}
2019 
2020 		// "If original parent is editable and has no children, remove it from its
2021 		// parent."
2022 		if (isEditable(originalParent) && !originalParent.hasChildNodes()) {
2023 			originalParent.parentNode.removeChild(originalParent);
2024 		}
2025 
2026 		// "If new parent's nextSibling is editable and running sibling criteria on
2027 		// it returns true:"
2028 		if (isEditable(newParent.nextSibling) && siblingCriteria(newParent.nextSibling)) {
2029 			// "If new parent is not an inline node, but new parent's last child
2030 			// and new parent's nextSibling's first child are both inline nodes,
2031 			// and new parent's last child is not a br, call createElement("br") on
2032 			// the ownerDocument of new parent and append the result as the last
2033 			// child of new parent."
2034 			if (!isInlineNode(newParent) && isInlineNode(newParent.lastChild) && isInlineNode(newParent.nextSibling.firstChild) && !isNamedHtmlElement(newParent.lastChild, "BR")) {
2035 				newParent.appendChild(newParent.ownerDocument.createElement("br"));
2036 			}
2037 
2038 			// "While new parent's nextSibling has children, append its first child
2039 			// as the last child of new parent, preserving ranges."
2040 			while (newParent.nextSibling.hasChildNodes()) {
2041 				movePreservingRanges(newParent.nextSibling.firstChild, newParent, -1, range);
2042 			}
2043 
2044 			// "Remove new parent's nextSibling from its parent."
2045 			newParent.parentNode.removeChild(newParent.nextSibling);
2046 		}
2047 
2048 		// "Remove extraneous line breaks from new parent."
2049 		removeExtraneousLineBreaksFrom(newParent);
2050 
2051 		// "Return new parent."
2052 		return newParent;
2053 	}
2054 
2055 
2056 	//@}
2057 	///// Allowed children /////
2058 	//@{
2059 
2060 	// "A name of an element with inline contents is "a", "abbr", "b", "bdi",
2061 	// "bdo", "cite", "code", "dfn", "em", "h1", "h2", "h3", "h4", "h5", "h6", "i",
2062 	// "kbd", "mark", "p", "pre", "q", "rp", "rt", "ruby", "s", "samp", "small",
2063 	// "span", "strong", "sub", "sup", "u", "var", "acronym", "listing", "strike",
2064 	// "xmp", "big", "blink", "font", "marquee", "nobr", or "tt"."
2065 	var namesOfElementsWithInlineContentsMap = {
2066 		"A": true,
2067 		"ABBR": true,
2068 		"B": true,
2069 		"BDI": true,
2070 		"BDO": true,
2071 		"CITE": true,
2072 		"CODE": true,
2073 		"DFN": true,
2074 		"EM": true,
2075 		"H1": true,
2076 		"H2": true,
2077 		"H3": true,
2078 		"H4": true,
2079 		"H5": true,
2080 		"H6": true,
2081 		"I": true,
2082 		"KBD": true,
2083 		"MARK": true,
2084 		"P": true,
2085 		"PRE": true,
2086 		"Q": true,
2087 		"RP": true,
2088 		"RT": true,
2089 		"RUBY": true,
2090 		"S": true,
2091 		"SAMP": true,
2092 		"SMALL": true,
2093 		"SPAN": true,
2094 		"STRONG": true,
2095 		"SUB": true,
2096 		"SUP": true,
2097 		"U": true,
2098 		"VAR": true,
2099 		"ACRONYM": true,
2100 		"LISTING": true,
2101 		"STRIKE": true,
2102 		"XMP": true,
2103 		"BIG": true,
2104 		"BLINK": true,
2105 		"FONT": true,
2106 		"MARQUEE": true,
2107 		"NOBR": true,
2108 		"TT": true
2109 	};
2110 
2111 
2112 	var tableRelatedElements = {
2113 		"colgroup": true,
2114 		"table": true,
2115 		"tbody": true,
2116 		"tfoot": true,
2117 		"thead": true,
2118 		"tr": true
2119 	};
2120 
2121 	var scriptRelatedElements = {
2122 		"script": true,
2123 		"style": true,
2124 		"plaintext": true,
2125 		"xmp": true
2126 	};
2127 
2128 	var prohibitedHeadingNestingMap = jQuery.extend({
2129 		"H1": true,
2130 		"H2": true,
2131 		"H3": true,
2132 		"H4": true,
2133 		"H5": true,
2134 		"H6": true
2135 	}, prohibitedParagraphChildNamesMap);
2136 	var prohibitedTableNestingMap = {
2137 		"CAPTION": true,
2138 		"COL": true,
2139 		"COLGROUP": true,
2140 		"TBODY": true,
2141 		"TD": true,
2142 		"TFOOT": true,
2143 		"TH": true,
2144 		"THEAD": true,
2145 		"TR": true
2146 	};
2147 	var prohibitedDefNestingMap = {
2148 		"DD": true,
2149 		"DT": true
2150 	};
2151 	var prohibitedNestingCombinationsMap = {
2152 		"A": jQuery.extend({
2153 			"A": true
2154 		}, prohibitedParagraphChildNamesMap),
2155 		"DD": prohibitedDefNestingMap,
2156 		"DT": prohibitedDefNestingMap,
2157 		"LI": {
2158 			"LI": true
2159 		},
2160 		"NOBR": jQuery.extend({
2161 			"NOBR": true
2162 		}, prohibitedParagraphChildNamesMap),
2163 		"H1": prohibitedHeadingNestingMap,
2164 		"H2": prohibitedHeadingNestingMap,
2165 		"H3": prohibitedHeadingNestingMap,
2166 		"H4": prohibitedHeadingNestingMap,
2167 		"H5": prohibitedHeadingNestingMap,
2168 		"H6": prohibitedHeadingNestingMap,
2169 		"TD": prohibitedTableNestingMap,
2170 		"TH": prohibitedTableNestingMap,
2171 		// this is the same as namesOfElementsWithInlineContentsMap excluding a and h1-h6 elements above
2172 		"ABBR": prohibitedParagraphChildNamesMap,
2173 		"B": prohibitedParagraphChildNamesMap,
2174 		"BDI": prohibitedParagraphChildNamesMap,
2175 		"BDO": prohibitedParagraphChildNamesMap,
2176 		"CITE": prohibitedParagraphChildNamesMap,
2177 		"CODE": prohibitedParagraphChildNamesMap,
2178 		"DFN": prohibitedParagraphChildNamesMap,
2179 		"EM": prohibitedParagraphChildNamesMap,
2180 		"I": prohibitedParagraphChildNamesMap,
2181 		"KBD": prohibitedParagraphChildNamesMap,
2182 		"MARK": prohibitedParagraphChildNamesMap,
2183 		"P": prohibitedParagraphChildNamesMap,
2184 		"PRE": prohibitedParagraphChildNamesMap,
2185 		"Q": prohibitedParagraphChildNamesMap,
2186 		"RP": prohibitedParagraphChildNamesMap,
2187 		"RT": prohibitedParagraphChildNamesMap,
2188 		"RUBY": prohibitedParagraphChildNamesMap,
2189 		"S": prohibitedParagraphChildNamesMap,
2190 		"SAMP": prohibitedParagraphChildNamesMap,
2191 		"SMALL": prohibitedParagraphChildNamesMap,
2192 		"SPAN": prohibitedParagraphChildNamesMap,
2193 		"STRONG": prohibitedParagraphChildNamesMap,
2194 		"SUB": prohibitedParagraphChildNamesMap,
2195 		"SUP": prohibitedParagraphChildNamesMap,
2196 		"U": prohibitedParagraphChildNamesMap,
2197 		"VAR": prohibitedParagraphChildNamesMap,
2198 		"ACRONYM": prohibitedParagraphChildNamesMap,
2199 		"LISTING": prohibitedParagraphChildNamesMap,
2200 		"STRIKE": prohibitedParagraphChildNamesMap,
2201 		"XMP": prohibitedParagraphChildNamesMap,
2202 		"BIG": prohibitedParagraphChildNamesMap,
2203 		"BLINK": prohibitedParagraphChildNamesMap,
2204 		"FONT": prohibitedParagraphChildNamesMap,
2205 		"MARQUEE": prohibitedParagraphChildNamesMap,
2206 		"TT": prohibitedParagraphChildNamesMap
2207 	};
2208 
2209 	// "An element with inline contents is an HTML element whose local name is a
2210 	// name of an element with inline contents."
2211 	function isElementWithInlineContents(node) {
2212 		return isMappedHtmlElement(node, namesOfElementsWithInlineContentsMap);
2213 	}
2214 
2215 	function isAllowedChild(child, parent_) {
2216 		// "If parent is "colgroup", "table", "tbody", "tfoot", "thead", "tr", or
2217 		// an HTML element with local name equal to one of those, and child is a
2218 		// Text node whose data does not consist solely of space characters, return
2219 		// false."
2220 		if ((tableRelatedElements[parent_] || isHtmlElementInArray(parent_, ["colgroup", "table", "tbody", "tfoot", "thead", "tr"])) && typeof child == "object" && child.nodeType == $_.Node.TEXT_NODE && !/^[ \t\n\f\r]*$/.test(child.data)) {
2221 			return false;
2222 		}
2223 
2224 		// "If parent is "script", "style", "plaintext", or "xmp", or an HTML
2225 		// element with local name equal to one of those, and child is not a Text
2226 		// node, return false."
2227 		if ((scriptRelatedElements[parent_] || isHtmlElementInArray(parent_, ["script", "style", "plaintext", "xmp"])) && (typeof child != "object" || child.nodeType != $_.Node.TEXT_NODE)) {
2228 			return false;
2229 		}
2230 
2231 		// "If child is a Document, DocumentFragment, or DocumentType, return
2232 		// false."
2233 		if (typeof child == "object" && (child.nodeType == $_.Node.DOCUMENT_NODE || child.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE || child.nodeType == $_.Node.DOCUMENT_TYPE_NODE)) {
2234 			return false;
2235 		}
2236 
2237 		// "If child is an HTML element, set child to the local name of child."
2238 		if (isAnyHtmlElement(child)) {
2239 			child = child.tagName.toLowerCase();
2240 		}
2241 
2242 		// "If child is not a string, return true."
2243 		if (typeof child != "string") {
2244 			return true;
2245 		}
2246 
2247 		// "If parent is an HTML element:"
2248 		if (isAnyHtmlElement(parent_)) {
2249 			// "If child is "a", and parent or some ancestor of parent is an a,
2250 			// return false."
2251 			//
2252 			// "If child is a prohibited paragraph child name and parent or some
2253 			// ancestor of parent is an element with inline contents, return
2254 			// false."
2255 			//
2256 			// "If child is "h1", "h2", "h3", "h4", "h5", or "h6", and parent or
2257 			// some ancestor of parent is an HTML element with local name "h1",
2258 			// "h2", "h3", "h4", "h5", or "h6", return false."
2259 			var ancestor = parent_;
2260 			while (ancestor) {
2261 				if (child == "a" && isNamedHtmlElement(ancestor, 'a')) {
2262 					return false;
2263 				}
2264 				if (prohibitedParagraphChildNamesMap[child.toUpperCase()] && isElementWithInlineContents(ancestor)) {
2265 					return false;
2266 				}
2267 				if (/^h[1-6]$/.test(child) && isAnyHtmlElement(ancestor) && /^H[1-6]$/.test(ancestor.tagName)) {
2268 					return false;
2269 				}
2270 				ancestor = ancestor.parentNode;
2271 			}
2272 
2273 			// "Let parent be the local name of parent."
2274 2275 			parent_ = parent_.tagName.toLowerCase();
2276 		}
2277 
2278 		// "If parent is an Element or DocumentFragment, return true."
2279 		if (typeof parent_ == "object" && (parent_.nodeType == $_.Node.ELEMENT_NODE || parent_.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE)) {
2280 			return true;
2281 		}
2282 
2283 		// "If parent is not a string, return false."
2284 		if (typeof parent_ != "string") {
2285 			return false;
2286 		}
2287 
2288 		// "If parent is on the left-hand side of an entry on the following list,
2289 		// then return true if child is listed on the right-hand side of that
2290 		// entry, and false otherwise."
2291 		switch (parent_) {
2292 		case "colgroup":
2293 			return child == "col";
2294 		case "table":
2295 			return jQuery.inArray(child, ["caption", "col", "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1;
2296 		case "tbody":
2297 		case "thead":
2298 		case "tfoot":
2299 			return jQuery.inArray(child, ["td", "th", "tr"]) != -1;
2300 		case "tr":
2301 			return jQuery.inArray(child, ["td", "th"]) != -1;
2302 		case "dl":
2303 			return jQuery.inArray(child, ["dt", "dd"]) != -1;
2304 		case "dir":
2305 		case "ol":
2306 		case "ul":
2307 			return jQuery.inArray(child, ["dir", "li", "ol", "ul"]) != -1;
2308 		case "hgroup":
2309 			return (/^h[1-6]$/).test(child);
2310 		}
2311 
2312 		// "If child is "body", "caption", "col", "colgroup", "frame", "frameset",
2313 		// "head", "html", "tbody", "td", "tfoot", "th", "thead", or "tr", return
2314 		// false."
2315 		if (jQuery.inArray(child, ["body", "caption", "col", "colgroup", "frame", "frameset", "head", "html", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1) {
2316 			return false;
2317 		}
2318 
2319 		// "If child is "dd" or "dt" and parent is not "dl", return false."
2320 		if (jQuery.inArray(child, ["dd", "dt"]) != -1 && parent_ != "dl") {
2321 			return false;
2322 		}
2323 
2324 		// "If child is "li" and parent is not "ol" or "ul", return false."
2325 		if (child == "li" && parent_ != "ol" && parent_ != "ul") {
2326 			return false;
2327 		}
2328 
2329 		// "If parent is on the left-hand side of an entry on the following list
2330 		// and child is listed on the right-hand side of that entry, return false."
2331 		var leftSide = prohibitedNestingCombinationsMap[parent_.toUpperCase()];
2332 		if (leftSide) {
2333 			var rightSide = leftSide[child.toUpperCase()];
2334 			if (rightSide) {
2335 				return false;
2336 			}
2337 		}
2338 
2339 		// "Return true."
2340 		return true;
2341 	}
2342 
2343 
2344 	//@}
2345 
2346 	//////////////////////////////////////
2347 	///// Inline formatting commands /////
2348 	//////////////////////////////////////
2349 
2350 	///// Inline formatting command definitions /////
2351 	//@{
2352 
2353 	// "A node node is effectively contained in a range range if range is not
2354 	// collapsed, and at least one of the following holds:"
2355 	function isEffectivelyContained(node, range) {
2356 		if (range.collapsed) {
2357 			return false;
2358 		}
2359 
2360 		// "node is contained in range."
2361 		if (isContained(node, range)) {
2362 			return true;
2363 		}
2364 
2365 		// "node is range's start node, it is a Text node, and its length is
2366 		// different from range's start offset."
2367 		if (node == range.startContainer && node.nodeType == $_.Node.TEXT_NODE && getNodeLength(node) != range.startOffset) {
2368 			return true;
2369 		}
2370 
2371 		// "node is range's end node, it is a Text node, and range's end offset is
2372 		// not 0."
2373 		if (node == range.endContainer && node.nodeType == $_.Node.TEXT_NODE && range.endOffset != 0) {
2374 			return true;
2375 		}
2376 
2377 		// "node has at least one child; and all its children are effectively
2378 		// contained in range; and either range's start node is not a descendant of
2379 		// node or is not a Text node or range's start offset is zero; and either
2380 		// range's end node is not a descendant of node or is not a Text node or
2381 		// range's end offset is its end node's length."
2382 		if (node.hasChildNodes() && $_(node.childNodes).every(function (child) { return isEffectivelyContained(child, range); })
2383 			    && (!isDescendant(range.startContainer, node)
2384 					|| range.startContainer.nodeType != $_.Node.TEXT_NODE
2385 					|| range.startOffset == 0)
2386 			    && (!isDescendant(range.endContainer, node)
2387 					|| range.endContainer.nodeType != $_.Node.TEXT_NODE
2388 					|| range.endOffset == getNodeLength(range.endContainer))) {
2389 			return true;
2390 		}
2391 
2392 		return false;
2393 	}
2394 
2395 	// Like get(All)ContainedNodes(), but for effectively contained nodes.
2396 	function getEffectivelyContainedNodes(range, condition) {
2397 		if (typeof condition == "undefined") {
2398 			condition = function () {
2399 				return true;
2400 			};
2401 		}
2402 		var node = range.startContainer;
2403 		while (isEffectivelyContained(node.parentNode, range)) {
2404 			node = node.parentNode;
2405 		}
2406 
2407 		var stop = nextNodeDescendants(range.endContainer);
2408 
2409 		var nodeList = [];
2410 		while (isBefore(node, stop)) {
2411 			if (isEffectivelyContained(node, range) && condition(node)) {
2412 				nodeList.push(node);
2413 				node = nextNodeDescendants(node);
2414 				continue;
2415 			}
2416 			node = nextNode(node);
2417 		}
2418 		return nodeList;
2419 	}
2420 
2421 	function getAllEffectivelyContainedNodes(range, condition) {
2422 		if (typeof condition == "undefined") {
2423 			condition = function () {
2424 				return true;
2425 			};
2426 		}
2427 		var node = range.startContainer;
2428 		while (isEffectivelyContained(node.parentNode, range)) {
2429 			node = node.parentNode;
2430 		}
2431 
2432 		var stop = nextNodeDescendants(range.endContainer);
2433 
2434 		var nodeList = [];
2435 		while (isBefore(node, stop)) {
2436 			if (isEffectivelyContained(node, range) && condition(node)) {
2437 				nodeList.push(node);
2438 			}
2439 			node = nextNode(node);
2440 		}
2441 		return nodeList;
2442 	}
2443 
2444 	// "A modifiable element is a b, em, i, s, span, strong, sub, sup, or u element
2445 	// with no attributes except possibly style; or a font element with no
2446 	// attributes except possibly style, color, face, and/or size; or an a element
2447 	// with no attributes except possibly style and/or href."
2448 	function isModifiableElement(node) {
2449 		if (!isAnyHtmlElement(node)) {
2450 			return false;
2451 		}
2452 
2453 		if (jQuery.inArray(node.tagName, ["B", "EM", "I", "S", "SPAN", "STRIKE", "STRONG", "SUB", "SUP", "U"]) != -1) {
2454 			if (node.attributes.length == 0) {
2455 				return true;
2456 			}
2457 
2458 			if (node.attributes.length == 1 && hasAttribute(node, "style")) {
2459 				return true;
2460 			}
2461 		}
2462 
2463 		if (node.tagName == "FONT" || node.tagName == "A") {
2464 			var numAttrs = node.attributes.length;
2465 
2466 			if (hasAttribute(node, "style")) {
2467 				numAttrs--;
2468 			}
2469 
2470 			if (node.tagName == "FONT") {
2471 				if (hasAttribute(node, "color")) {
2472 					numAttrs--;
2473 				}
2474 
2475 				if (hasAttribute(node, "face")) {
2476 					numAttrs--;
2477 				}
2478 
2479 				if (hasAttribute(node, "size")) {
2480 					numAttrs--;
2481 				}
2482 			}
2483 
2484 			if (node.tagName == "A" && hasAttribute(node, "href")) {
2485 				numAttrs--;
2486 			}
2487 
2488 			if (numAttrs == 0) {
2489 				return true;
2490 			}
2491 		}
2492 
2493 		return false;
2494 	}
2495 
2496 	function isSimpleModifiableElement(node) {
2497 		// "A simple modifiable element is an HTML element for which at least one
2498 		// of the following holds:"
2499 		if (!isAnyHtmlElement(node)) {
2500 			return false;
2501 		}
2502 
2503 		// Only these elements can possibly be a simple modifiable element.
2504 		if (jQuery.inArray(node.tagName, ["A", "B", "EM", "FONT", "I", "S", "SPAN", "STRIKE", "STRONG", "SUB", "SUP", "U"]) == -1) {
2505 			return false;
2506 		}
2507 
2508 		// "It is an a, b, em, font, i, s, span, strike, strong, sub, sup, or u
2509 		// element with no attributes."
2510 		if (node.attributes.length == 0) {
2511 			return true;
2512 		}
2513 
2514 		// If it's got more than one attribute, everything after this fails.
2515 		if (node.attributes.length > 1) {
2516 			return false;
2517 		}
2518 
2519 		// "It is an a, b, em, font, i, s, span, strike, strong, sub, sup, or u
2520 		// element with exactly one attribute, which is style, which sets no CSS
2521 		// properties (including invalid or unrecognized properties)."
2522 		//
2523 		// Not gonna try for invalid or unrecognized.
2524 		if (hasAttribute(node, "style") && getStyleLength(node) == 0) {
2525 			return true;
2526 		}
2527 
2528 		// "It is an a element with exactly one attribute, which is href."
2529 		if (node.tagName == "A" && hasAttribute(node, "href")) {
2530 			return true;
2531 		}
2532 
2533 		// "It is a font element with exactly one attribute, which is either color,
2534 		// face, or size."
2535 		if (node.tagName == "FONT" && (hasAttribute(node, "color") || hasAttribute(node, "face") || hasAttribute(node, "size"))) {
2536 			return true;
2537 		}
2538 
2539 		// "It is a b or strong element with exactly one attribute, which is style,
2540 		// and the style attribute sets exactly one CSS property (including invalid
2541 		// or unrecognized properties), which is "font-weight"."
2542 		if ((node.tagName == "B" || node.tagName == "STRONG") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.fontWeight != "") {
2543 			return true;
2544 		}
2545 
2546 		// "It is an i or em element with exactly one attribute, which is style,
2547 		// and the style attribute sets exactly one CSS property (including invalid
2548 		// or unrecognized properties), which is "font-style"."
2549 		if ((node.tagName == "I" || node.tagName == "EM") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.fontStyle != "") {
2550 			return true;
2551 		}
2552 
2553 		// "It is an a, font, or span element with exactly one attribute, which is
2554 		// style, and the style attribute sets exactly one CSS property (including
2555 		// invalid or unrecognized properties), and that property is not
2556 		// "text-decoration"."
2557 		if ((node.tagName == "A" || node.tagName == "FONT" || node.tagName == "SPAN") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.textDecoration == "") {
2558 			return true;
2559 2560 		}
2561 
2562 		// "It is an a, font, s, span, strike, or u element with exactly one
2563 		// attribute, which is style, and the style attribute sets exactly one CSS
2564 		// property (including invalid or unrecognized properties), which is
2565 		// "text-decoration", which is set to "line-through" or "underline" or
2566 		// "overline" or "none"."
2567 		if (jQuery.inArray(node.tagName, ["A", "FONT", "S", "SPAN", "STRIKE", "U"]) != -1 && hasAttribute(node, "style") && getStyleLength(node) == 1 && (node.style.textDecoration == "line-through" || node.style.textDecoration == "underline" || node.style.textDecoration == "overline" || node.style.textDecoration == "none")) {
2568 			return true;
2569 		}
2570 
2571 		return false;
2572 	}
2573 
2574 	// "Two quantities are equivalent values for a command if either both are null,
2575 	// or both are strings and they're equal and the command does not define any
2576 	// equivalent values, or both are strings and the command defines equivalent
2577 	// values and they match the definition."
2578 2579 	function areEquivalentValues(command, val1, val2) {
2580 		if (val1 === null && val2 === null) {
2581 			return true;
2582 		}
2583 
2584 		if (typeof val1 == "string" && typeof val2 == "string" && val1 == val2 && !(commands[command].hasOwnProperty("equivalentValues"))) {
2585 			return true;
2586 		}
2587 
2588 		if (typeof val1 == "string" && typeof val2 == "string" && commands[command].hasOwnProperty("equivalentValues") && commands[command].equivalentValues(val1, val2)) {
2589 			return true;
2590 		}
2591 
2592 		return false;
2593 	}
2594 
2595 	// "Two quantities are loosely equivalent values for a command if either they
2596 	// are equivalent values for the command, or if the command is the fontSize
2597 	// command; one of the quantities is one of "xx-small", "small", "medium",
2598 	// "large", "x-large", "xx-large", or "xxx-large"; and the other quantity is
2599 	// the resolved value of "font-size" on a font element whose size attribute has
2600 	// the corresponding value set ("1" through "7" respectively)."
2601 	function areLooselyEquivalentValues(command, val1, val2) {
2602 		if (areEquivalentValues(command, val1, val2)) {
2603 			return true;
2604 		}
2605 
2606 		if (command != "fontsize" || typeof val1 != "string" || typeof val2 != "string") {
2607 			return false;
2608 		}
2609 
2610 		// Static variables in JavaScript?
2611 		var callee = areLooselyEquivalentValues;
2612 		if (callee.sizeMap === undefined) {
2613 			callee.sizeMap = {};
2614 			var font = document.createElement("font");
2615 			document.body.appendChild(font);
2616 			$_(["xx-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]).forEach(function (keyword) {
2617 				font.size = cssSizeToLegacy(keyword);
2618 				callee.sizeMap[keyword] = $_.getComputedStyle(font).fontSize;
2619 			});
2620 			document.body.removeChild(font);
2621 		}
2622 
2623 		return val1 === callee.sizeMap[val2] || val2 === callee.sizeMap[val1];
2624 	}
2625 
2626 	//@}
2627 	///// Assorted inline formatting command algorithms /////
2628 	//@{
2629 
2630 	function getEffectiveCommandValue(node, command) {
2631 		// "If neither node nor its parent is an Element, return null."
2632 		if (node.nodeType != $_.Node.ELEMENT_NODE && (!node.parentNode || node.parentNode.nodeType != $_.Node.ELEMENT_NODE)) {
2633 			return null;
2634 		}
2635 
2636 		// "If node is not an Element, return the effective command value of its
2637 		// parent for command."
2638 		if (node.nodeType != $_.Node.ELEMENT_NODE) {
2639 			return getEffectiveCommandValue(node.parentNode, command);
2640 		}
2641 
2642 		// "If command is "createLink" or "unlink":"
2643 		if (command == "createlink" || command == "unlink") {
2644 			// "While node is not null, and is not an a element that has an href
2645 			// attribute, set node to its parent."
2646 			while (node && (!isAnyHtmlElement(node) || node.tagName != "A" || !hasAttribute(node, "href"))) {
2647 				node = node.parentNode;
2648 			}
2649 
2650 			// "If node is null, return null."
2651 			if (!node) {
2652 				return null;
2653 			}
2654 
2655 			// "Return the value of node's href attribute."
2656 			return node.getAttribute("href");
2657 		}
2658 
2659 		// "If command is "backColor" or "hiliteColor":"
2660 		if (command == "backcolor" || command == "hilitecolor") {
2661 			// "While the resolved value of "background-color" on node is any
2662 			// fully transparent value, and node's parent is an Element, set
2663 			// node to its parent."
2664 			//
2665 			// Another lame hack to avoid flawed APIs.
2666 			while (($_.getComputedStyle(node).backgroundColor == "rgba(0, 0, 0, 0)" || $_.getComputedStyle(node).backgroundColor === "" || $_.getComputedStyle(node).backgroundColor == "transparent") && node.parentNode && node.parentNode.nodeType == $_.Node.ELEMENT_NODE) {
2667 				node = node.parentNode;
2668 			}
2669 
2670 			// "If the resolved value of "background-color" on node is a fully
2671 			// transparent value, return "rgb(255, 255, 255)"."
2672 			if ($_.getComputedStyle(node).backgroundColor == "rgba(0, 0, 0, 0)" || $_.getComputedStyle(node).backgroundColor === "" || $_.getComputedStyle(node).backgroundColor == "transparent") {
2673 				return "rgb(255, 255, 255)";
2674 			}
2675 
2676 			// "Otherwise, return the resolved value of "background-color" for
2677 			// node."
2678 			return $_.getComputedStyle(node).backgroundColor;
2679 		}
2680 
2681 		// "If command is "subscript" or "superscript":"
2682 		if (command == "subscript" || command == "superscript") {
2683 			// "Let affected by subscript and affected by superscript be two
2684 			// boolean variables, both initially false."
2685 			var affectedBySubscript = false;
2686 			var affectedBySuperscript = false;
2687 
2688 			// "While node is an inline node:"
2689 			while (isInlineNode(node)) {
2690 				var verticalAlign = $_.getComputedStyle(node).verticalAlign;
2691 
2692 				// "If node is a sub, set affected by subscript to true."
2693 				if (isNamedHtmlElement(node, 'sub')) {
2694 					affectedBySubscript = true;
2695 					// "Otherwise, if node is a sup, set affected by superscript to
2696 					// true."
2697 				} else if (isNamedHtmlElement(node, 'sup')) {
2698 					affectedBySuperscript = true;
2699 				}
2700 
2701 				// "Set node to its parent."
2702 				node = node.parentNode;
2703 			}
2704 
2705 			// "If affected by subscript and affected by superscript are both true,
2706 			// return the string "mixed"."
2707 			if (affectedBySubscript && affectedBySuperscript) {
2708 				return "mixed";
2709 			}
2710 
2711 			// "If affected by subscript is true, return "subscript"."
2712 			if (affectedBySubscript) {
2713 				return "subscript";
2714 			}
2715 
2716 			// "If affected by superscript is true, return "superscript"."
2717 			if (affectedBySuperscript) {
2718 				return "superscript";
2719 			}
2720 
2721 			// "Return null."
2722 			return null;
2723 		}
2724 
2725 		// "If command is "strikethrough", and the "text-decoration" property of
2726 		// node or any of its ancestors has resolved value containing
2727 		// "line-through", return "line-through". Otherwise, return null."
2728 		if (command == "strikethrough") {
2729 			do {
2730 				if ($_.getComputedStyle(node).textDecoration.indexOf("line-through") != -1) {
2731 					return "line-through";
2732 				}
2733 				node = node.parentNode;
2734 			} while (node && node.nodeType == $_.Node.ELEMENT_NODE);
2735 			return null;
2736 		}
2737 
2738 		// "If command is "underline", and the "text-decoration" property of node
2739 		// or any of its ancestors has resolved value containing "underline",
2740 		// return "underline". Otherwise, return null."
2741 		if (command == "underline") {
2742 			do {
2743 				if ($_.getComputedStyle(node).textDecoration.indexOf("underline") != -1) {
2744 					return "underline";
2745 				}
2746 				node = node.parentNode;
2747 			} while (node && node.nodeType == $_.Node.ELEMENT_NODE);
2748 			return null;
2749 		}
2750 
2751 		if (!commands[command].hasOwnProperty("relevantCssProperty")) {
2752 			throw "Bug: no relevantCssProperty for " + command + " in getEffectiveCommandValue";
2753 		}
2754 
2755 		// "Return the resolved value for node of the relevant CSS property for
2756 		// command."
2757 		return $_.getComputedStyle(node)[commands[command].relevantCssProperty].toString();
2758 	}
2759 
2760 	function getSpecifiedCommandValue(element, command) {
2761 		// "If command is "backColor" or "hiliteColor" and element's display
2762 		// property does not have resolved value "inline", return null."
2763 		if ((command == "backcolor" || command == "hilitecolor") && $_.getComputedStyle(element).display != "inline") {
2764 			return null;
2765 		}
2766 
2767 		// "If command is "createLink" or "unlink":"
2768 		if (command == "createlink" || command == "unlink") {
2769 			// "If element is an a element and has an href attribute, return the
2770 			// value of that attribute."
2771 			if (isAnyHtmlElement(element) && element.tagName == "A" && hasAttribute(element, "href")) {
2772 				return element.getAttribute("href");
2773 2774 			}
2775 
2776 			// "Return null."
2777 			return null;
2778 		}
2779 
2780 		// "If command is "subscript" or "superscript":"
2781 		if (command == "subscript" || command == "superscript") {
2782 			// "If element is a sup, return "superscript"."
2783 			if (isNamedHtmlElement(element, 'sup')) {
2784 				return "superscript";
2785 			}
2786 
2787 			// "If element is a sub, return "subscript"."
2788 			if (isNamedHtmlElement(element, 'sub')) {
2789 				return "subscript";
2790 			}
2791 
2792 			// "Return null."
2793 			return null;
2794 		}
2795 
2796 		// "If command is "strikethrough", and element has a style attribute set,
2797 		// and that attribute sets "text-decoration":"
2798 		if (command == "strikethrough" && element.style.textDecoration != "") {
2799 			// "If element's style attribute sets "text-decoration" to a value
2800 			// containing "line-through", return "line-through"."
2801 			if (element.style.textDecoration.indexOf("line-through") != -1) {
2802 				return "line-through";
2803 			}
2804 
2805 			// "Return null."
2806 			return null;
2807 		}
2808 
2809 		// "If command is "strikethrough" and element is a s or strike element,
2810 		// return "line-through"."
2811 		if (command == "strikethrough" && isHtmlElementInArray(element, ["S", "STRIKE"])) {
2812 			return "line-through";
2813 		}
2814 
2815 		// "If command is "underline", and element has a style attribute set, and
2816 		// that attribute sets "text-decoration":"
2817 		if (command == "underline" && element.style.textDecoration != "") {
2818 			// "If element's style attribute sets "text-decoration" to a value
2819 			// containing "underline", return "underline"."
2820 			if (element.style.textDecoration.indexOf("underline") != -1) {
2821 				return "underline";
2822 			}
2823 
2824 			// "Return null."
2825 			return null;
2826 		}
2827 
2828 		// "If command is "underline" and element is a u element, return
2829 		// "underline"."
2830 		if (command == "underline" && isNamedHtmlElement(element, 'U')) {
2831 			return "underline";
2832 		}
2833 
2834 		// "Let property be the relevant CSS property for command."
2835 		var property = commands[command].relevantCssProperty;
2836 
2837 		// "If property is null, return null."
2838 		if (property === null) {
2839 			return null;
2840 		}
2841 
2842 		// "If element has a style attribute set, and that attribute has the
2843 		// effect of setting property, return the value that it sets property to."
2844 		if (element.style[property] != "") {
2845 			return element.style[property];
2846 		}
2847 
2848 		// "If element is a font element that has an attribute whose effect is
2849 		// to create a presentational hint for property, return the value that the
2850 		// hint sets property to.  (For a size of 7, this will be the non-CSS value
2851 		// "xxx-large".)"
2852 		if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") {
2853 			if (property == "color" && hasAttribute(element, "color")) {
2854 				return element.color;
2855 			}
2856 			if (property == "fontFamily" && hasAttribute(element, "face")) {
2857 				return element.face;
2858 			}
2859 			if (property == "fontSize" && hasAttribute(element, "size")) {
2860 				// This is not even close to correct in general.
2861 				var size = parseInt(element.size, 10);
2862 				if (size < 1) {
2863 					size = 1;
2864 				}
2865 				if (size > 7) {
2866 					size = 7;
2867 				}
2868 				return {
2869 					1: "xx-small",
2870 					2: "small",
2871 					3: "medium",
2872 					4: "large",
2873 					5: "x-large",
2874 					6: "xx-large",
2875 					7: "xxx-large"
2876 				}[size];
2877 			}
2878 		}
2879 
2880 		// "If element is in the following list, and property is equal to the
2881 		// CSS property name listed for it, return the string listed for it."
2882 		//
2883 		// A list follows, whose meaning is copied here.
2884 		if (property == "fontWeight" && (element.tagName == "B" || element.tagName == "STRONG")) {
2885 			return "bold";
2886 		}
2887 		if (property == "fontStyle" && (element.tagName == "I" || element.tagName == "EM")) {
2888 2889 			return "italic";
2890 		}
2891 
2892 		// "Return null."
2893 		return null;
2894 	}
2895 
2896 	function reorderModifiableDescendants(node, command, newValue, range) {
2897 		// "Let candidate equal node."
2898 		var candidate = node;
2899 
2900 		// "While candidate is a modifiable element, and candidate has exactly one
2901 		// child, and that child is also a modifiable element, and candidate is not
2902 		// a simple modifiable element or candidate's specified command value for
2903 		// command is not equivalent to new value, set candidate to its child."
2904 		while (isModifiableElement(candidate) && candidate.childNodes.length == 1 && isModifiableElement(candidate.firstChild) && (!isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue))) {
2905 			candidate = candidate.firstChild;
2906 		}
2907 
2908 		// "If candidate is node, or is not a simple modifiable element, or its
2909 		// specified command value is not equivalent to new value, or its effective
2910 		// command value is not loosely equivalent to new value, abort these
2911 		// steps."
2912 		if (candidate == node || !isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue) || !areLooselyEquivalentValues(command, getEffectiveCommandValue(candidate, command), newValue)) {
2913 			return;
2914 		}
2915 
2916 		// "While candidate has children, insert the first child of candidate into
2917 		// candidate's parent immediately before candidate, preserving ranges."
2918 		while (candidate.hasChildNodes()) {
2919 			movePreservingRanges(candidate.firstChild, candidate.parentNode, Dom.getIndexInParent(candidate), range);
2920 		}
2921 
2922 		// "Insert candidate into node's parent immediately after node."
2923 		node.parentNode.insertBefore(candidate, node.nextSibling);
2924 
2925 		// "Append the node as the last child of candidate, preserving ranges."
2926 		movePreservingRanges(node, candidate, -1, range);
2927 	}
2928 
2929 	var recordValuesCommands = ["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"];
2930 
2931 	function recordValues(nodeList) {
2932 		// "Let values be a list of (node, command, specified command value)
2933 		// triples, initially empty."
2934 		var values = [];
2935 
2936 		// "For each node in node list, for each command in the list "subscript",
2937 		// "bold", "fontName", "fontSize", "foreColor", "hiliteColor", "italic",
2938 		// "strikethrough", and "underline" in that order:"
2939 
2940 		// Ensure we have a plain array to avoid the potential performance
2941 		// overhead of a NodeList
2942 		var nodes = jQuery.makeArray(nodeList);
2943 		var i, j;
2944 		var node;
2945 		var command;
2946 		var ancestor;
2947 		var specifiedCommandValue;
2948 		for (i = 0; i < nodes.length; i++) {
2949 			node = nodes[i];
2950 			for (j = 0; j < recordValuesCommands.length; j++) {
2951 				command = recordValuesCommands[j];
2952 
2953 				// "Let ancestor equal node."
2954 				ancestor = node;
2955 
2956 				// "If ancestor is not an Element, set it to its parent."
2957 				if (ancestor.nodeType != 1) {
2958 					ancestor = ancestor.parentNode;
2959 				}
2960 
2961 				// "While ancestor is an Element and its specified command value
2962 				// for command is null, set it to its parent."
2963 				specifiedCommandValue = null;
2964 				while (ancestor && ancestor.nodeType == 1 && (specifiedCommandValue = getSpecifiedCommandValue(ancestor, command)) === null) {
2965 					ancestor = ancestor.parentNode;
2966 				}
2967 
2968 				// "If ancestor is an Element, add (node, command, ancestor's
2969 				// specified command value for command) to values. Otherwise add
2970 				// (node, command, null) to values."
2971 				values.push([node, command, specifiedCommandValue]);
2972 			}
2973 		}
2974 
2975 		// "Return values."
2976 		return values;
2977 	}
2978 
2979 	//@}
2980 	///// Clearing an element's value /////
2981 	//@{
2982 
2983 	function clearValue(element, command, range) {
2984 		// "If element is not editable, return the empty list."
2985 		if (!isEditable(element)) {
2986 			return [];
2987 		}
2988 
2989 		// "If element's specified command value for command is null, return the
2990 		// empty list."
2991 		if (getSpecifiedCommandValue(element, command) === null) {
2992 			return [];
2993 		}
2994 
2995 		// "If element is a simple modifiable element:"
2996 		if (isSimpleModifiableElement(element)) {
2997 			// "Let children be the children of element."
2998 			var children = Array.prototype.slice.call(toArray(element.childNodes));
2999 
3000 			// "For each child in children, insert child into element's parent
3001 			// immediately before element, preserving ranges."
3002 			var i;
3003 			for (i = 0; i < children.length; i++) {
3004 				movePreservingRanges(children[i], element.parentNode, Dom.getIndexInParent(element), range);
3005 			}
3006 
3007 			// "Remove element from its parent."
3008 			element.parentNode.removeChild(element);
3009 
3010 			// "Return children."
3011 			return children;
3012 		}
3013 
3014 		// "If command is "strikethrough", and element has a style attribute that
3015 		// sets "text-decoration" to some value containing "line-through", delete
3016 		// "line-through" from the value."
3017 		if (command == "strikethrough" && element.style.textDecoration.indexOf("line-through") != -1) {
3018 			if (element.style.textDecoration == "line-through") {
3019 				element.style.textDecoration = "";
3020 			} else {
3021 				element.style.textDecoration = element.style.textDecoration.replace("line-through", "");
3022 			}
3023 			if (element.getAttribute("style") == "") {
3024 				element.removeAttribute("style");
3025 			}
3026 		}
3027 
3028 		// "If command is "underline", and element has a style attribute that sets
3029 		// "text-decoration" to some value containing "underline", delete
3030 		// "underline" from the value."
3031 		if (command == "underline" && element.style.textDecoration.indexOf("underline") != -1) {
3032 			if (element.style.textDecoration == "underline") {
3033 				element.style.textDecoration = "";
3034 			} else {
3035 				element.style.textDecoration = element.style.textDecoration.replace("underline", "");
3036 			}
3037 			if (element.getAttribute("style") == "") {
3038 				element.removeAttribute("style");
3039 			}
3040 		}
3041 
3042 		// "If the relevant CSS property for command is not null, unset the CSS
3043 		// property property of element."
3044 		if (commands[command].relevantCssProperty !== null) {
3045 			element.style[commands[command].relevantCssProperty] = '';
3046 			if (element.getAttribute("style") == "") {
3047 				element.removeAttribute("style");
3048 			}
3049 		}
3050 
3051 		// "If element is a font element:"
3052 		if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") {
3053 			// "If command is "foreColor", unset element's color attribute, if set."
3054 			if (command == "forecolor") {
3055 				element.removeAttribute("color");
3056 			}
3057 
3058 			// "If command is "fontName", unset element's face attribute, if set."
3059 			if (command == "fontname") {
3060 				element.removeAttribute("face");
3061 			}
3062 
3063 			// "If command is "fontSize", unset element's size attribute, if set."
3064 			if (command == "fontsize") {
3065 				element.removeAttribute("size");
3066 			}
3067 		}
3068 
3069 		// "If element is an a element and command is "createLink" or "unlink",
3070 		// unset the href property of element."
3071 		if (isNamedHtmlElement(element, 'A') && (command == "createlink" || command == "unlink")) {
3072 			element.removeAttribute("href");
3073 		}
3074 
3075 		// "If element's specified command value for command is null, return the
3076 		// empty list."
3077 		if (getSpecifiedCommandValue(element, command) === null) {
3078 			return [];
3079 		}
3080 
3081 		// "Set the tag name of element to "span", and return the one-node list
3082 		// consisting of the result."
3083 		return [setTagName(element, "span", range)];
3084 	}
3085 
3086 	//@}
3087 	///// Forcing the value of a node /////
3088 	//@{
3089 
3090 	function forceValue(node, command, newValue, range) {
3091 		var children = [];
3092 		var i;
3093 		var specifiedValue;
3094 
3095 		// "If node's parent is null, abort this algorithm."
3096 		if (!node.parentNode) {
3097 			return;
3098 		}
3099 
3100 		// "If new value is null, abort this algorithm."
3101 		if (newValue === null) {
3102 			return;
3103 		}
3104 
3105 		// "If node is an allowed child of "span":"
3106 		if (isAllowedChild(node, "span")) {
3107 			// "Reorder modifiable descendants of node's previousSibling."
3108 			reorderModifiableDescendants(node.previousSibling, command, newValue, range);
3109 
3110 			// "Reorder modifiable descendants of node's nextSibling."
3111 			reorderModifiableDescendants(node.nextSibling, command, newValue, range);
3112 
3113 			// "Wrap the one-node list consisting of node, with sibling criteria
3114 			// returning true for a simple modifiable element whose specified
3115 			// command value is equivalent to new value and whose effective command
3116 			// value is loosely equivalent to new value and false otherwise, and
3117 			// with new parent instructions returning null."
3118 			wrap(
3119 				[node],
3120 				function (node) {
3121 					return isSimpleModifiableElement(node) && areEquivalentValues(command, getSpecifiedCommandValue(node, command), newValue) && areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue);
3122 				},
3123 				function () {
3124 					return null;
3125 				},
3126 				range
3127 			);
3128 		}
3129 
3130 		// "If the effective command value of command is loosely equivalent to new
3131 		// value on node, abort this algorithm."
3132 		if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) {
3133 			return;
3134 		}
3135 
3136 		// "If node is not an allowed child of "span":"
3137 		if (!isAllowedChild(node, "span")) {
3138 			// "Let children be all children of node, omitting any that are
3139 			// Elements whose specified command value for command is neither null
3140 			// nor equivalent to new value."
3141 			for (i = 0; i < node.childNodes.length; i++) {
3142 				if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) {
3143 					specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command);
3144 
3145 					if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) {
3146 						continue;
3147 					}
3148 				}
3149 				children.push(node.childNodes[i]);
3150 			}
3151 
3152 			// "Force the value of each Node in children, with command and new
3153 			// value as in this invocation of the algorithm."
3154 			for (i = 0; i < children.length; i++) {
3155 				forceValue(children[i], command, newValue, range);
3156 			}
3157 
3158 			// "Abort this algorithm."
3159 			return;
3160 		}
3161 
3162 		// "If the effective command value of command is loosely equivalent to new
3163 		// value on node, abort this algorithm."
3164 		if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) {
3165 			return;
3166 		}
3167 
3168 		// "Let new parent be null."
3169 		var newParent = null;
3170 
3171 		// "If the CSS styling flag is false:"
3172 		if (!cssStylingFlag) {
3173 			// "If command is "bold" and new value is "bold", let new parent be the
3174 			// result of calling createElement("b") on the ownerDocument of node."
3175 			if (command == "bold" && (newValue == "bold" || newValue == "700")) {
3176 				newParent = node.ownerDocument.createElement("b");
3177 			}
3178 
3179 			// "If command is "italic" and new value is "italic", let new parent be
3180 			// the result of calling createElement("i") on the ownerDocument of
3181 			// node."
3182 			if (command == "italic" && newValue == "italic") {
3183 				newParent = node.ownerDocument.createElement("i");
3184 			}
3185 
3186 			// "If command is "strikethrough" and new value is "line-through", let
3187 			// new parent be the result of calling createElement("s") on the
3188 			// ownerDocument of node."
3189 			if (command == "strikethrough" && newValue == "line-through") {
3190 				newParent = node.ownerDocument.createElement("s");
3191 			}
3192 
3193 			// "If command is "underline" and new value is "underline", let new
3194 			// parent be the result of calling createElement("u") on the
3195 			// ownerDocument of node."
3196 			if (command == "underline" && newValue == "underline") {
3197 				newParent = node.ownerDocument.createElement("u");
3198 			}
3199 
3200 			// "If command is "foreColor", and new value is fully opaque with red,
3201 			// green, and blue components in the range 0 to 255:"
3202 			if (command == "forecolor" && parseSimpleColor(newValue)) {
3203 				// "Let new parent be the result of calling createElement("span")
3204 				// on the ownerDocument of node."
3205 				// NOTE: modified this process to create span elements with style attributes
3206 				// instead of oldschool font tags with color attributes
3207 				newParent = node.ownerDocument.createElement("span");
3208 
3209 				// "If new value is an extended color keyword, set the color
3210 				// attribute of new parent to new value."
3211 				//
3212 				// "Otherwise, set the color attribute of new parent to the result
3213 				// of applying the rules for serializing simple color values to new
3214 				// value (interpreted as a simple color)."
3215 				jQuery(newParent).css('color', parseSimpleColor(newValue));
3216 			}
3217 
3218 			// "If command is "fontName", let new parent be the result of calling
3219 			// createElement("font") on the ownerDocument of node, then set the
3220 			// face attribute of new parent to new value."
3221 			if (command == "fontname") {
3222 				newParent = node.ownerDocument.createElement("font");
3223 				newParent.face = newValue;
3224 			}
3225 		}
3226 
3227 		// "If command is "createLink" or "unlink":"
3228 		if (command == "createlink" || command == "unlink") {
3229 			// "Let new parent be the result of calling createElement("a") on the
3230 			// ownerDocument of node."
3231 			newParent = node.ownerDocument.createElement("a");
3232 
3233 			// "Set the href attribute of new parent to new value."
3234 			newParent.setAttribute("href", newValue);
3235 
3236 			// "Let ancestor be node's parent."
3237 			var ancestor = node.parentNode;
3238 
3239 			// "While ancestor is not null:"
3240 			while (ancestor) {
3241 				// "If ancestor is an a, set the tag name of ancestor to "span",
3242 				// and let ancestor be the result."
3243 				if (isNamedHtmlElement(ancestor, 'A')) {
3244 					ancestor = setTagName(ancestor, "span", range);
3245 				}
3246 
3247 				// "Set ancestor to its parent."
3248 				ancestor = ancestor.parentNode;
3249 			}
3250 		}
3251 
3252 		// "If command is "fontSize"; and new value is one of "xx-small", "small",
3253 		// "medium", "large", "x-large", "xx-large", or "xxx-large"; and either the
3254 		// CSS styling flag is false, or new value is "xxx-large": let new parent
3255 		// be the result of calling createElement("font") on the ownerDocument of
3256 		// node, then set the size attribute of new parent to the number from the
3257 		// following table based on new value: [table omitted]"
3258 		if (command == "fontsize" && jQuery.inArray(newValue, ["xx-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) != -1 && (!cssStylingFlag || newValue == "xxx-large")) {
3259 			newParent = node.ownerDocument.createElement("font");
3260 			newParent.size = cssSizeToLegacy(newValue);
3261 		}
3262 
3263 		// "If command is "subscript" or "superscript" and new value is
3264 		// "subscript", let new parent be the result of calling
3265 		// createElement("sub") on the ownerDocument of node."
3266 		if ((command == "subscript" || command == "superscript") && newValue == "subscript") {
3267 			newParent = node.ownerDocument.createElement("sub");
3268 		}
3269 
3270 		// "If command is "subscript" or "superscript" and new value is
3271 		// "superscript", let new parent be the result of calling
3272 		// createElement("sup") on the ownerDocument of node."
3273 		if ((command == "subscript" || command == "superscript") && newValue == "superscript") {
3274 			newParent = node.ownerDocument.createElement("sup");
3275 		}
3276 
3277 		// "If new parent is null, let new parent be the result of calling
3278 		// createElement("span") on the ownerDocument of node."
3279 		if (!newParent) {
3280 			newParent = node.ownerDocument.createElement("span");
3281 		}
3282 
3283 		// "Insert new parent in node's parent before node."
3284 		node.parentNode.insertBefore(newParent, node);
3285 
3286 		// "If the effective command value of command for new parent is not loosely
3287 		// equivalent to new value, and the relevant CSS property for command is
3288 		// not null, set that CSS property of new parent to new value (if the new
3289 		// value would be valid)."
3290 		var property = commands[command].relevantCssProperty;
3291 		if (property !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(newParent, command), newValue)) {
3292 			newParent.style[property] = newValue;
3293 		}
3294 
3295 		// "If command is "strikethrough", and new value is "line-through", and the
3296 		// effective command value of "strikethrough" for new parent is not
3297 		// "line-through", set the "text-decoration" property of new parent to
3298 		// "line-through"."
3299 		if (command == "strikethrough" && newValue == "line-through" && getEffectiveCommandValue(newParent, "strikethrough") != "line-through") {
3300 			newParent.style.textDecoration = "line-through";
3301 		}
3302 
3303 		// "If command is "underline", and new value is "underline", and the
3304 		// effective command value of "underline" for new parent is not
3305 		// "underline", set the "text-decoration" property of new parent to
3306 		// "underline"."
3307 		if (command == "underline" && newValue == "underline" && getEffectiveCommandValue(newParent, "underline") != "underline") {
3308 			newParent.style.textDecoration = "underline";
3309 		}
3310 
3311 		// "Append node to new parent as its last child, preserving ranges."
3312 		movePreservingRanges(node, newParent, newParent.childNodes.length, range);
3313 
3314 		// "If node is an Element and the effective command value of command for
3315 		// node is not loosely equivalent to new value:"
3316 		if (node.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) {
3317 			// "Insert node into the parent of new parent before new parent,
3318 			// preserving ranges."
3319 			movePreservingRanges(node, newParent.parentNode, Dom.getIndexInParent(newParent), range);
3320 
3321 			// "Remove new parent from its parent."
3322 			newParent.parentNode.removeChild(newParent);
3323 
3324 			// "Let children be all children of node, omitting any that are
3325 			// Elements whose specified command value for command is neither null
3326 			// nor equivalent to new value."
3327 			children = [];
3328 			for (i = 0; i < node.childNodes.length; i++) {
3329 				if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) {
3330 					specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command);
3331 
3332 					if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) {
3333 						continue;
3334 					}
3335 				}
3336 				children.push(node.childNodes[i]);
3337 			}
3338 
3339 			// "Force the value of each Node in children, with command and new
3340 			// value as in this invocation of the algorithm."
3341 			for (i = 0; i < children.length; i++) {
3342 				forceValue(children[i], command, newValue, range);
3343 			}
3344 		}
3345 	}
3346 3347 
	//@}
3348 	///// Pushing down values /////
3349 	//@{
3350 
3351 	function pushDownValues(node, command, newValue, range) {
3352 		// "If node's parent is not an Element, abort this algorithm."
3353 		if (!node.parentNode || node.parentNode.nodeType != $_.Node.ELEMENT_NODE) {
3354 			return;
3355 		}
3356 
3357 		// "If the effective command value of command is loosely equivalent to new
3358 		// value on node, abort this algorithm."
3359 		if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) {
3360 			return;
3361 		}
3362 
3363 		// "Let current ancestor be node's parent."
3364 		var currentAncestor = node.parentNode;
3365 
3366 		// "Let ancestor list be a list of Nodes, initially empty."
3367 		var ancestorList = [];
3368 
3369 		// "While current ancestor is an editable Element and the effective command
3370 		// value of command is not loosely equivalent to new value on it, append
3371 		// current ancestor to ancestor list, then set current ancestor to its
3372 		// parent."
3373 		while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !areLooselyEquivalentValues(command, getEffectiveCommandValue(currentAncestor, command), newValue)) {
3374 			ancestorList.push(currentAncestor);
3375 			currentAncestor = currentAncestor.parentNode;
3376 		}
3377 
3378 		// "If ancestor list is empty, abort this algorithm."
3379 		if (!ancestorList.length) {
3380 			return;
3381 		}
3382 
3383 		// "Let propagated value be the specified command value of command on the
3384 		// last member of ancestor list."
3385 		var propagatedValue = getSpecifiedCommandValue(ancestorList[ancestorList.length - 1], command);
3386 
3387 		// "If propagated value is null and is not equal to new value, abort this
3388 		// algorithm."
3389 		if (propagatedValue === null && propagatedValue != newValue) {
3390 			return;
3391 		}
3392 
3393 		// "If the effective command value for the parent of the last member of
3394 		// ancestor list is not loosely equivalent to new value, and new value is
3395 		// not null, abort this algorithm."
3396 		if (newValue !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(ancestorList[ancestorList.length - 1].parentNode, command), newValue)) {
3397 			return;
3398 		}
3399 
3400 		// "While ancestor list is not empty:"
3401 		while (ancestorList.length) {
3402 			// "Let current ancestor be the last member of ancestor list."
3403 			// "Remove the last member from ancestor list."
3404 			currentAncestor = ancestorList.pop();
3405 
3406 			// "If the specified command value of current ancestor for command is
3407 			// not null, set propagated value to that value."
3408 			if (getSpecifiedCommandValue(currentAncestor, command) !== null) {
3409 				propagatedValue = getSpecifiedCommandValue(currentAncestor, command);
3410 			}
3411 
3412 			// "Let children be the children of current ancestor."
3413 			var children = Array.prototype.slice.call(toArray(currentAncestor.childNodes));
3414 
3415 			// "If the specified command value of current ancestor for command is
3416 			// not null, clear the value of current ancestor."
3417 			if (getSpecifiedCommandValue(currentAncestor, command) !== null) {
3418 				clearValue(currentAncestor, command, range);
3419 			}
3420 
3421 			// "For every child in children:"
3422 			var i;
3423 			for (i = 0; i < children.length; i++) {
3424 				var child = children[i];
3425 
3426 				// "If child is node, continue with the next child."
3427 				if (child == node) {
3428 					continue;
3429 				}
3430 
3431 				// "If child is an Element whose specified command value for
3432 				// command is neither null nor equivalent to propagated value,
3433 				// continue with the next child."
3434 				if (child.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(child, command) !== null && !areEquivalentValues(command, propagatedValue, getSpecifiedCommandValue(child, command))) {
3435 					continue;
3436 				}
3437 
3438 				// "If child is the last member of ancestor list, continue with the
3439 				// next child."
3440 				if (child == ancestorList[ancestorList.length - 1]) {
3441 					continue;
3442 				}
3443 
3444 				// "Force the value of child, with command as in this algorithm
3445 				// and new value equal to propagated value."
3446 				forceValue(child, command, propagatedValue, range);
3447 			}
3448 		}
3449 	}
3450 
3451 	function restoreValues(values, range) {
3452 		// "For each (node, command, value) triple in values:"
3453 		$_(values).forEach(function (triple) {
3454 			var node = triple[0];
3455 			var command = triple[1];
3456 			var value = triple[2];
3457 
3458 			// "Let ancestor equal node."
3459 			var ancestor = node;
3460 
3461 			// "If ancestor is not an Element, set it to its parent."
3462 			if (!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) {
3463 				ancestor = ancestor.parentNode;
3464 			}
3465 
3466 			// "While ancestor is an Element and its specified command value for
3467 			// command is null, set it to its parent."
3468 			while (ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(ancestor, command) === null) {
3469 				ancestor = ancestor.parentNode;
3470 			}
3471 
3472 			// "If value is null and ancestor is an Element, push down values on
3473 			// node for command, with new value null."
3474 			if (value === null && ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE) {
3475 				pushDownValues(node, command, null, range);
3476 
3477 				// "Otherwise, if ancestor is an Element and its specified command
3478 				// value for command is not equivalent to value, or if ancestor is not
3479 				// an Element and value is not null, force the value of command to
3480 				// value on node."
3481 			} else if ((ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getSpecifiedCommandValue(ancestor, command), value)) || ((!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) && value !== null)) {
3482 				forceValue(node, command, value, range);
3483 			}
3484 		});
3485 	}
3486 
3487 	//@}
3488 	///// Setting the selection's value /////
3489 	//@{
3490 
3491 	function setSelectionValue(command, newValue, range) {
3492 
3493 		// Use current selected range if no range passed
3494 		range = range || getActiveRange();
3495 
3496 		// "If there is no editable text node effectively contained in the active
3497 		// range:"
3498 		if (!$_(getAllEffectivelyContainedNodes(range)).filter(function (node) { return node.nodeType == $_.Node.TEXT_NODE; }, true).some(isEditable)) {
3499 			// "If command has inline command activated values, set the state
3500 			// override to true if new value is among them and false if it's not."
3501 			if (commands[command].hasOwnProperty("inlineCommandActivatedValues")) {
3502 				setStateOverride(
3503 					command,
3504 					$_(commands[command].inlineCommandActivatedValues).indexOf(newValue) != -1,
3505 					range
3506 				);
3507 			}
3508 
3509 			// "If command is "subscript", unset the state override for
3510 			// "superscript"."
3511 			if (command == "subscript") {
3512 				unsetStateOverride("superscript", range);
3513 			}
3514 
3515 			// "If command is "superscript", unset the state override for
3516 			// "subscript"."
3517 			if (command == "superscript") {
3518 				unsetStateOverride("subscript", range);
3519 			}
3520 
3521 			// "If new value is null, unset the value override (if any)."
3522 			if (newValue === null) {
3523 				unsetValueOverride(command, range);
3524 
3525 				// "Otherwise, if command has a value specified, set the value override
3526 				// to new value."
3527 			} else if (commands[command].hasOwnProperty("value")) {
3528 				setValueOverride(command, newValue, range);
3529 			}
3530 
3531 			// "Abort these steps."
3532 			return;
3533 		}
3534 
3535 		// "If the active range's start node is an editable Text node, and its
3536 		// start offset is neither zero nor its start node's length, call
3537 		// splitText() on the active range's start node, with argument equal to the
3538 		// active range's start offset. Then set the active range's start node to
3539 		// the result, and its start offset to zero."
3540 		if (isEditable(range.startContainer) && range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset != 0 && range.startOffset != getNodeLength(range.startContainer)) {
3541 			// Account for browsers not following range mutation rules
3542 			var newNode = splitText(range.startContainer, range.startOffset);
3543 			var newActiveRange = Aloha.createRange();
3544 			if (range.startContainer == range.endContainer) {
3545 				var newEndOffset = range.endOffset - range.startOffset;
3546 				newActiveRange.setEnd(newNode, newEndOffset);
3547 				range.setEnd(newNode, newEndOffset);
3548 			}
3549 			newActiveRange.setStart(newNode, 0);
3550 			Aloha.getSelection().removeAllRanges();
3551 			Aloha.getSelection().addRange(newActiveRange);
3552 
3553 			range.setStart(newNode, 0);
3554 		}
3555 
3556 		// "If the active range's end node is an editable Text node, and its end
3557 		// offset is neither zero nor its end node's length, call splitText() on
3558 		// the active range's end node, with argument equal to the active range's
3559 		// end offset."
3560 		if (isEditable(range.endContainer) && range.endContainer.nodeType == $_.Node.TEXT_NODE && range.endOffset != 0 && range.endOffset != getNodeLength(range.endContainer)) {
3561 			// IE seems to mutate the range incorrectly here, so we need correction
3562 			// here as well.  The active range will be temporarily in orphaned
3563 			// nodes, so calling getActiveRange() after splitText() but before
3564 			// fixing the range will throw an exception.
3565 			// TODO: check if this is still neccessary
3566 			var activeRange = range;
3567 			var newStart = [activeRange.startContainer, activeRange.startOffset];
3568 			var newEnd = [activeRange.endContainer, activeRange.endOffset];
3569 			splitText(activeRange.endContainer, activeRange.endOffset);
3570 			activeRange.setStart(newStart[0], newStart[1]);
3571 			activeRange.setEnd(newEnd[0], newEnd[1]);
3572 
3573 			Aloha.getSelection().removeAllRanges();
3574 			Aloha.getSelection().addRange(activeRange);
3575 		}
3576 
3577 		// "Let element list be all editable Elements effectively contained in the
3578 		// active range.
3579 		//
3580 		// "For each element in element list, clear the value of element."
3581 		$_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) {
3582 			return isEditable(node) && node.nodeType == $_.Node.ELEMENT_NODE;
3583 		})).forEach(function (element) {
3584 			clearValue(element, command, range);
3585 		});
3586 
3587 		// "Let node list be all editable nodes effectively contained in the active
3588 		// range.
3589 		//
3590 		// "For each node in node list:"
3591 		$_(getAllEffectivelyContainedNodes(range, isEditable)).forEach(function (node) {
3592 			// "Push down values on node."
3593 			pushDownValues(node, command, newValue, range);
3594 
3595 			// "Force the value of node."
3596 			forceValue(node, command, newValue, range);
3597 		});
3598 	}
3599 
3600 	/**
3601 	 * attempt to retrieve a block like a table or an Aloha Block
3602 	 * which is located one step right of the current caret position.
3603 	 * If an appropriate element is found it will be returned or
3604 	 * false otherwise
3605 	 *
3606 	 * @param {element} node current node we're in
3607 	 * @param {number} offset current offset within that node
3608 	 *
3609 	 * @return the dom node if found or false if no appropriate
3610 	 * element was found
3611 	 */
3612 	function getBlockAtNextPosition(node, offset) {
3613 		var i;
3614 
3615 		// if we're inside a text node we first have to check
3616 		// if there is nothing but tabs, newlines or the like
3617 		// after our current cursor position
3618 		if (node.nodeType === $_.Node.TEXT_NODE && offset < node.length) {
3619 			for (i = offset; i < node.length; i++) {
3620 				if ((node.data.charAt(i) !== '\t' && node.data.charAt(i) !== '\r' && node.data.charAt(i) !== '\n') || node.data.charCodeAt(i) === 160) { //  
3621 					// this is a character that has to be deleted first
3622 					return false;
3623 				}
3624 			}
3625 		}
3626 
3627 		// try the most simple approach first: the next sibling
3628 		// is a table
3629 		if (node.nextSibling && node.nextSibling.className && node.nextSibling.className.indexOf("aloha-table-wrapper") >= 0) {
3630 			return node.nextSibling;
3631 		}
3632 
3633 		// since we got only ignorable whitespace here determine if
3634 		// our nodes parents next sibling is a table
3635 		if (node.parentNode && node.parentNode.nextSibling && node.parentNode.nextSibling.className && node.parentNode.nextSibling.className.indexOf("aloha-table-wrapper") >= 0) {
3636 			return node.parentNode.nextSibling;
3637 		}
3638 
3639 		// our parents nextsibling is a pure whitespace node such as
3640 		// generated by sourcecode indentation so we'll check for
3641 		// the next next sibling
3642 		if (node.parentNode && node.parentNode.nextSibling && isWhitespaceNode(node.parentNode.nextSibling) && node.parentNode.nextSibling.nextSibling && node.parentNode.nextSibling.nextSibling.className && node.parentNode.nextSibling.nextSibling.className.indexOf("aloha-table-wrapper") >= 0) {
3643 			return node.parentNode.nextSibling.nextSibling;
3644 		}
3645 
3646 		// Note: the search above works for tables, since they cannot be
3647 		// nested deeply in paragraphs and other formatting tags. If this code
3648 		// is extended to work also for other blocks, the search probably needs to be adapted
3649 	}
3650 
3651 	/**
3652 	 * Attempt to retrieve a block like a table or an Aloha Block
3653 	 * which is located right before the current position.
3654 	 * If an appropriate element is found, it will be returned or
3655 	 * false otherwise
3656 	 *
3657 	 * @param {element} node current node
3658 	 * @param {offset} offset current offset
3659 	 *
3660 	 * @return dom node of found or false if no appropriate
3661 	 * element was found
3662 	 */
3663 	function getBlockAtPreviousPosition(node, offset) {
3664 		var i;
3665 
3666 		if (node.nodeType === $_.Node.TEXT_NODE && offset > 0) {
3667 			for (i = offset - 1; i >= 0; i--) {
3668 				if ((node.data.charAt(i) !== '\t' && node.data.charAt(i) !== '\r' && node.data.charAt(i) !== '\n') || node.data.charCodeAt(i) === 160) { //  
3669 					// this is a character that has to be deleted first
3670 					return false;
3671 				}
3672 			}
3673 		}
3674 
3675 		// try the previous sibling
3676 		if (node.previousSibling && node.previousSibling.className && node.previousSibling.className.indexOf("aloha-table-wrapper") >= 0) {
3677 			return node.previousSibling;
3678 		}
3679 
3680 		// try the parent's previous sibling
3681 		if (node.parentNode && node.parentNode.previousSibling && node.parentNode.previousSibling.className && node.parentNode.previousSibling.className.indexOf("aloha-table-wrapper") >= 0) {
3682 			return node.parentNode.previousSibling;
3683 		}
3684 
3685 		// the parent's previous sibling might be a whitespace node
3686 		if (node.parentNode && node.parentNode.previousSibling && isWhitespaceNode(node.parentNode.previousSibling) && node.parentNode.previousSibling.previousSibling && node.parentNode.previousSibling.previousSibling.className && node.parentNode.previousSibling.previousSibling.className.indexOf('aloha-table-wrapper') >= 0) {
3687 			return node.parentNode.previousSibling.previousSibling;
3688 		}
3689 
3690 		// Note: the search above works for tables, since they cannot be
3691 		// nested deeply in paragraphs and other formatting tags. If this code
3692 		// is extended to work also for other blocks, the search probably needs to be adapted
3693 
3694 		return false;
3695 	}
3696 
3697 	// "A boundary point (node, offset) is a block start point if either node's
3698 	// parent is null and offset is zero; or node has a child with index offset −
3699 	// 1, and that child is either a visible block node or a visible br."
3700 	function isBlockStartPoint(node, offset) {
3701 		return (!node.parentNode && offset == 0) || (0 <= offset - 1 && offset - 1 < node.childNodes.length && isVisible(node.childNodes[offset - 1]) && (isBlockNode(node.childNodes[offset - 1]) || isNamedHtmlElement(node.childNodes[offset - 1], "br")));
3702 	}
3703 
3704 	// "A boundary point (node, offset) is a block end point if either node's
3705 	// parent is null and offset is node's length; or node has a child with index
3706 	// offset, and that child is a visible block node."
3707 	function isBlockEndPoint(node, offset) {
3708 		return (!node.parentNode && offset == getNodeLength(node)) || (offset < node.childNodes.length && isVisible(node.childNodes[offset]) && isBlockNode(node.childNodes[offset]));
3709 	}
3710 
3711 	// "A boundary point is a block boundary point if it is either a block start
3712 	// point or a block end point."
3713 	function isBlockBoundaryPoint(node, offset) {
3714 		return isBlockStartPoint(node, offset) || isBlockEndPoint(node, offset);
3715 	}
3716 
3717 	function followsLineBreak(node) {
3718 		// "Let offset be zero."
3719 		var offset = 0;
3720 
3721 		// "While (node, offset) is not a block boundary point:"
3722 		while (!isBlockBoundaryPoint(node, offset)) {
3723 			// "If node has a visible child with index offset minus one, return
3724 			// false."
3725 			if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isVisible(node.childNodes[offset - 1])) {
3726 				return false;
3727 			}
3728 
3729 			// "If offset is zero or node has no children, set offset to node's
3730 			// index, then set node to its parent."
3731 			if (offset == 0 || !node.hasChildNodes()) {
3732 				offset = Dom.getIndexInParent(node);
3733 				node = node.parentNode;
3734 
3735 				// "Otherwise, set node to its child with index offset minus one, then
3736 				// set offset to node's length."
3737 			} else {
3738 				node = node.childNodes[offset - 1];
3739 				offset = getNodeLength(node);
3740 			}
3741 		}
3742 
3743 		// "Return true."
3744 		return true;
3745 	}
3746 
3747 	function precedesLineBreak(node) {
3748 		// "Let offset be node's length."
3749 		var offset = getNodeLength(node);
3750 
3751 		// "While (node, offset) is not a block boundary point:"
3752 		while (!isBlockBoundaryPoint(node, offset)) {
3753 			// "If node has a visible child with index offset, return false."
3754 			if (offset < node.childNodes.length && isVisible(node.childNodes[offset])) {
3755 				return false;
3756 			}
3757 
3758 			// "If offset is node's length or node has no children, set offset to
3759 			// one plus node's index, then set node to its parent."
3760 			if (offset == getNodeLength(node) || !node.hasChildNodes()) {
3761 				offset = 1 + Dom.getIndexInParent(node);
3762 				node = node.parentNode;
3763 
3764 				// "Otherwise, set node to its child with index offset and set offset
3765 				// to zero."
3766 			} else {
3767 				node = node.childNodes[offset];
3768 				offset = 0;
3769 			}
3770 		}
3771 
3772 		// "Return true."
3773 		return true;
3774 	}
3775 
3776 	//@}
3777 	///// Splitting a node list's parent /////
3778 	//@{
3779 
3780 	function splitParent(nodeList, range) {
3781 		var i;
3782 
3783 		// "Let original parent be the parent of the first member of node list."
3784 		var originalParent = nodeList[0].parentNode;
3785 
3786 		// "If original parent is not editable or its parent is null, do nothing
3787 		// and abort these steps."
3788 		if (!isEditable(originalParent) || !originalParent.parentNode) {
3789 			return;
3790 		}
3791 
3792 		// "If the first child of original parent is in node list, remove
3793 		// extraneous line breaks before original parent."
3794 		if (jQuery.inArray(originalParent.firstChild, nodeList) != -1) {
3795 			removeExtraneousLineBreaksBefore(originalParent);
3796 		}
3797 
3798 		var firstChildInNodeList = jQuery.inArray(originalParent.firstChild, nodeList) != -1;
3799 		var lastChildInNodeList = jQuery.inArray(originalParent.lastChild, nodeList) != -1;
3800 
3801 		// "If the first child of original parent is in node list, and original
3802 		// parent follows a line break, set follows line break to true. Otherwise,
3803 		// set follows line break to false."
3804 		var followsLineBreak_ = firstChildInNodeList && followsLineBreak(originalParent);
3805 
3806 		// "If the last child of original parent is in node list, and original
3807 		// parent precedes a line break, set precedes line break to true.
3808 		// Otherwise, set precedes line break to false."
3809 		var precedesLineBreak_ = lastChildInNodeList && precedesLineBreak(originalParent);
3810 
3811 		// "If the first child of original parent is not in node list, but its last
3812 		// child is:"
3813 		if (!firstChildInNodeList && lastChildInNodeList) {
3814 			// "For each node in node list, in reverse order, insert node into the
3815 			// parent of original parent immediately after original parent,
3816 			// preserving ranges."
3817 			for (i = nodeList.length - 1; i >= 0; i--) {
3818 				movePreservingRanges(nodeList[i], originalParent.parentNode, 1 + Dom.getIndexInParent(originalParent), range);
3819 			}
3820 
3821 			// "If precedes line break is true, and the last member of node list
3822 			// does not precede a line break, call createElement("br") on the
3823 			// context object and insert the result immediately after the last
3824 			// member of node list."
3825 			if (precedesLineBreak_ && !precedesLineBreak(nodeList[nodeList.length - 1])) {
3826 				nodeList[nodeList.length - 1].parentNode.insertBefore(document.createElement("br"), nodeList[nodeList.length - 1].nextSibling);
3827 			}
3828 
3829 			// "Remove extraneous line breaks at the end of original parent."
3830 			removeExtraneousLineBreaksAtTheEndOf(originalParent);
3831 
3832 			// "Abort these steps."
3833 			return;
3834 		}
3835 
3836 		// "If the first child of original parent is not in node list:"
3837 		if (!firstChildInNodeList) {
3838 3839 			// "Let cloned parent be the result of calling cloneNode(false) on
3840 			// original parent."
3841 			var clonedParent = originalParent.cloneNode(false);
3842 
3843 			// "If original parent has an id attribute, unset it."
3844 			originalParent.removeAttribute("id");
3845 
3846 			// "Insert cloned parent into the parent of original parent immediately
3847 			// before original parent."
3848 			originalParent.parentNode.insertBefore(clonedParent, originalParent);
3849 
3850 			// "While the previousSibling of the first member of node list is not
3851 			// null, append the first child of original parent as the last child of
3852 			// cloned parent, preserving ranges."
3853 			while (nodeList[0].previousSibling) {
3854 				movePreservingRanges(originalParent.firstChild, clonedParent, clonedParent.childNodes.length, range);
3855 			}
3856 		}
3857 
3858 		// "For each node in node list, insert node into the parent of original
3859 		// parent immediately before original parent, preserving ranges."
3860 		for (i = 0; i < nodeList.length; i++) {
3861 			movePreservingRanges(nodeList[i], originalParent.parentNode, Dom.getIndexInParent(originalParent), range);
3862 		}
3863 
3864 		// "If follows line break is true, and the first member of node list does
3865 		// not follow a line break, call createElement("br") on the context object
3866 		// and insert the result immediately before the first member of node list."
3867 		if (followsLineBreak_ && !followsLineBreak(nodeList[0])) {
3868 			nodeList[0].parentNode.insertBefore(document.createElement("br"), nodeList[0]);
3869 		}
3870 
3871 		// "If the last member of node list is an inline node other than a br, and
3872 		// the first child of original parent is a br, and original parent is not
3873 		// an inline node, remove the first child of original parent from original
3874 		// parent."
3875 		if (isInlineNode(nodeList[nodeList.length - 1]) && !isNamedHtmlElement(nodeList[nodeList.length - 1], "br") && isNamedHtmlElement(originalParent.firstChild, "br") && !isInlineNode(originalParent)) {
3876 			originalParent.removeChild(originalParent.firstChild);
3877 		}
3878 
3879 		// "If original parent has no children:"
3880 		if (!originalParent.hasChildNodes()) {
3881 			// if the current range is collapsed and at the end of the originalParent.parentNode
3882 			// the offset will not be available anymore after the next step (remove child)
3883 			// that's why we need to fix the range to prevent a bogus offset
3884 			if (originalParent.parentNode === range.startContainer && originalParent.parentNode === range.endContainer && range.startContainer === range.endContainer && range.startOffset === range.endOffset && originalParent.parentNode.childNodes.length === range.startOffset) {
3885 				range.startOffset = originalParent.parentNode.childNodes.length - 1;
3886 				range.endOffset = range.startOffset;
3887 			}
3888 
3889 			// "Remove original parent from its parent."
3890 			originalParent.parentNode.removeChild(originalParent);
3891 
3892 			// "If precedes line break is true, and the last member of node list
3893 			// does not precede a line break, call createElement("br") on the
3894 			// context object and insert the result immediately after the last
3895 			// member of node list."
3896 			if (precedesLineBreak_ && !precedesLineBreak(nodeList[nodeList.length - 1])) {
3897 				nodeList[nodeList.length - 1].parentNode.insertBefore(document.createElement("br"), nodeList[nodeList.length - 1].nextSibling);
3898 			}
3899 
3900 			// "Otherwise, remove extraneous line breaks before original parent."
3901 		} else {
3902 			removeExtraneousLineBreaksBefore(originalParent);
3903 		}
3904 
3905 		// "If node list's last member's nextSibling is null, but its parent is not
3906 		// null, remove extraneous line breaks at the end of node list's last
3907 		// member's parent."
3908 		if (!nodeList[nodeList.length - 1].nextSibling && nodeList[nodeList.length - 1].parentNode) {
3909 			removeExtraneousLineBreaksAtTheEndOf(nodeList[nodeList.length - 1].parentNode);
3910 		}
3911 	}
3912 
3913 	//@}
3914 	///// The backColor command /////
3915 	//@{
3916 	commands.backcolor = {
3917 		// Copy-pasted, same as hiliteColor
3918 		action: function (value, range) {
3919 			// Action is further copy-pasted, same as foreColor
3920 3921 
			// "If value is not a valid CSS color, prepend "#" to it."
3922 			//
3923 			// "If value is still not a valid CSS color, or if it is currentColor,
3924 			// abort these steps and do nothing."
3925 			//
3926 			// Cheap hack for testing, no attempt to be comprehensive.
3927 			if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) {
3928 				value = "#" + value;
3929 			}
3930 			if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") {
3931 				return;
3932 			}
3933 
3934 			// "Set the selection's value to value."
3935 			setSelectionValue("backcolor", value, range);
3936 		},
3937 		standardInlineValueCommand: true,
3938 		relevantCssProperty: "backgroundColor",
3939 		equivalentValues: function (val1, val2) {
3940 			// "Either both strings are valid CSS colors and have the same red,
3941 			// green, blue, and alpha components, or neither string is a valid CSS
3942 			// color."
3943 			return normalizeColor(val1) === normalizeColor(val2);
3944 		}
3945 	};
3946 
3947 	//@}
3948 	///// The bold command /////
3949 	//@{
3950 	commands.bold = {
3951 		action: function (value, range) {
3952 			// "If queryCommandState("bold") returns true, set the selection's
3953 			// value to "normal". Otherwise set the selection's value to "bold"."
3954 			if (myQueryCommandState("bold", range)) {
3955 				setSelectionValue("bold", "normal", range);
3956 			} else {
3957 				setSelectionValue("bold", "bold", range);
3958 			}
3959 		},
3960 		inlineCommandActivatedValues: ["bold", "600", "700", "800", "900"],
3961 		relevantCssProperty: "fontWeight",
3962 		equivalentValues: function (val1, val2) {
3963 			// "Either the two strings are equal, or one is "bold" and the other is
3964 			// "700", or one is "normal" and the other is "400"."
3965 			return val1 == val2 || (val1 == "bold" && val2 == "700") || (val1 == "700" && val2 == "bold") || (val1 == "normal" && val2 == "400") || (val1 == "400" && val2 == "normal");
3966 		}
3967 	};
3968 
3969 	//@}
3970 	///// The createLink command /////
3971 	//@{
3972 	commands.createlink = {
3973 		action: function (value, range) {
3974 			// "If value is the empty string, abort these steps and do nothing."
3975 			if (value === "") {
3976 				return;
3977 			}
3978 
3979 			// "For each editable a element that has an href attribute and is an
3980 			// ancestor of some node effectively contained in the active range, set
3981 			// that a element's href attribute to value."
3982 			//
3983 			// TODO: We don't actually do this in tree order, not that it matters
3984 			// unless you're spying with mutation events.
3985 			$_(getAllEffectivelyContainedNodes(getActiveRange())).forEach(function (node) {
3986 				$_(getAncestors(node)).forEach(function (ancestor) {
3987 					if (isEditable(ancestor) && isNamedHtmlElement(ancestor, 'a') && hasAttribute(ancestor, "href")) {
3988 						ancestor.setAttribute("href", value);
3989 					}
3990 				});
3991 			});
3992 
3993 			// "Set the selection's value to value."
3994 			setSelectionValue("createlink", value, range);
3995 		},
3996 		standardInlineValueCommand: true
3997 	};
3998 
3999 	//@}
4000 	///// The fontName command /////
4001 	//@{
4002 	commands.fontname = {
4003 		action: function (value, range) {
4004 			// "Set the selection's value to value."
4005 			setSelectionValue("fontname", value, range);
4006 		},
4007 		standardInlineValueCommand: true,
4008 		relevantCssProperty: "fontFamily"
4009 	};
4010 
4011 	//@}
4012 	///// The fontSize command /////
4013 	//@{
4014 
4015 	commands.fontsize = {
4016 		action: function (value, range) {
4017 			// "If value is the empty string, abort these steps and do nothing."
4018 			if (value === "") {
4019 				return;
4020 			}
4021 
4022 			value = normalizeFontSize(value);
4023 
4024 			// "If value is not one of the strings "xx-small", "x-small", "small",
4025 			// "medium", "large", "x-large", "xx-large", "xxx-large", and is not a
4026 			// valid CSS absolute length, then abort these steps and do nothing."
4027 			//
4028 			// More cheap hacks to skip valid CSS absolute length checks.
4029 			if (jQuery.inArray(value, ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) == -1 && !/^[0-9]+(\.[0-9]+)?(cm|mm|in|pt|pc)$/.test(value)) {
4030 				return;
4031 			}
4032 
4033 			// "Set the selection's value to value."
4034 			setSelectionValue("fontsize", value, range);
4035 		},
4036 		indeterm: function () {
4037 			// "True if among editable Text nodes that are effectively contained in
4038 			// the active range, there are two that have distinct effective command
4039 			// values.  Otherwise false."
4040 			return $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) {
4041 				return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
4042 			})).map(function (node) {
4043 				return getEffectiveCommandValue(node, "fontsize");
4044 			}, true).filter(function (value, i, arr) {
4045 				return $_(arr.slice(0, i)).indexOf(value) == -1;
4046 			}).length >= 2;
4047 		},
4048 		value: function (range) {
4049 			// "Let pixel size be the effective command value of the first editable
4050 			// Text node that is effectively contained in the active range, or if
4051 			// there is no such node, the effective command value of the active
4052 			// range's start node, in either case interpreted as a number of
4053 			// pixels."
4054 			var node = getAllEffectivelyContainedNodes(range, function (node) {
4055 				return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
4056 			})[0];
4057 			if (node === undefined) {
4058 				node = range.startContainer;
4059 			}
4060 			var pixelSize = getEffectiveCommandValue(node, "fontsize");
4061 
4062 			// "Return the legacy font size for pixel size."
4063 			return getLegacyFontSize(pixelSize);
4064 		},
4065 		relevantCssProperty: "fontSize"
4066 	};
4067 
4068 	//@}
4069 	///// The foreColor command /////
4070 	//@{
4071 	commands.forecolor = {
4072 		action: function (value, range) {
4073 			// Copy-pasted, same as backColor and hiliteColor
4074 
4075 			// "If value is not a valid CSS color, prepend "#" to it."
4076 			//
4077 			// "If value is still not a valid CSS color, or if it is currentColor,
4078 			// abort these steps and do nothing."
4079 			//
4080 			// Cheap hack for testing, no attempt to be comprehensive.
4081 			if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) {
4082 				value = "#" + value;
4083 			}
4084 			if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") {
4085 				return;
4086 			}
4087 
4088 			// "Set the selection's value to value."
4089 			setSelectionValue("forecolor", value, range);
4090 		},
4091 		standardInlineValueCommand: true,
4092 		relevantCssProperty: "color",
4093 		equivalentValues: function (val1, val2) {
4094 			// "Either both strings are valid CSS colors and have the same red,
4095 			// green, blue, and alpha components, or neither string is a valid CSS
4096 			// color."
4097 			return normalizeColor(val1) === normalizeColor(val2);
4098 		}
4099 	};
4100 
4101 	//@}
4102 	///// The hiliteColor command /////
4103 	//@{
4104 	commands.hilitecolor = {
4105 		// Copy-pasted, same as backColor
4106 		action: function (value, range) {
4107 			// Action is further copy-pasted, same as foreColor
4108 
4109 			// "If value is not a valid CSS color, prepend "#" to it."
4110 			//
4111 			// "If value is still not a valid CSS color, or if it is currentColor,
4112 			// abort these steps and do nothing."
4113 4114 			//
4115 			// Cheap hack for testing, no attempt to be comprehensive.
4116 			if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) {
4117 				value = "#" + value;
4118 			}
4119 			if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") {
4120 				return;
4121 			}
4122 
4123 			// "Set the selection's value to value."
4124 			setSelectionValue("hilitecolor", value, range);
4125 		},
4126 		indeterm: function () {
4127 			// "True if among editable Text nodes that are effectively contained in
4128 			// the active range, there are two that have distinct effective command
4129 			// values.  Otherwise false."
4130 			return $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) {
4131 				return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
4132 			})).map(function (node) {
4133 				return getEffectiveCommandValue(node, "hilitecolor");
4134 			}, true).filter(function (value, i, arr) {
4135 				return $_(arr.slice(0, i)).indexOf(value) == -1;
4136 			}).length >= 2;
4137 		},
4138 		standardInlineValueCommand: true,
4139 		relevantCssProperty: "backgroundColor",
4140 4141 		equivalentValues: function (val1, val2) {
4142 			// "Either both strings are valid CSS colors and have the same red,
4143 			// green, blue, and alpha components, or neither string is a valid CSS
4144 			// color."
4145 			return normalizeColor(val1) === normalizeColor(val2);
4146 		}
4147 	};
4148 
4149 	//@}
4150 	///// The italic command /////
4151 	//@{
4152 	commands.italic = {
4153 		action: function (value, range) {
4154 			// "If queryCommandState("italic") returns true, set the selection's
4155 			// value to "normal". Otherwise set the selection's value to "italic"."
4156 			if (myQueryCommandState("italic", range)) {
4157 				setSelectionValue("italic", "normal", range);
4158 			} else {
4159 				setSelectionValue("italic", "italic", range);
4160 			}
4161 		},
4162 		inlineCommandActivatedValues: ["italic", "oblique"],
4163 		relevantCssProperty: "fontStyle"
4164 	};
4165 
4166 	//@}
4167 	///// The removeFormat command /////
4168 	//@{
4169 	commands.removeformat = {
4170 		action: function (value, range) {
4171 			var newEnd, newStart, newNode;
4172 
4173 			// "A removeFormat candidate is an editable HTML element with local
4174 			// name "abbr", "acronym", "b", "bdi", "bdo", "big", "blink", "cite",
4175 			// "code", "dfn", "em", "font", "i", "ins", "kbd", "mark", "nobr", "q",
4176 			// "s", "samp", "small", "span", "strike", "strong", "sub", "sup",
4177 			// "tt", "u", or "var"."
4178 			function isRemoveFormatCandidate(node) {
4179 				return isEditable(node) && isHtmlElementInArray(node, ["abbr", "acronym", "b", "bdi", "bdo", "big", "blink", "cite", "code", "dfn", "em", "font", "i", "ins", "kbd", "mark", "nobr", "q", "s", "samp", "small", "span", "strike", "strong", "sub", "sup", "tt", "u", "var"]);
4180 			}
4181 
4182 			// "Let elements to remove be a list of every removeFormat candidate
4183 			// effectively contained in the active range."
4184 			var elementsToRemove = getAllEffectivelyContainedNodes(getActiveRange(), isRemoveFormatCandidate);
4185 
4186 			// "For each element in elements to remove:"
4187 			$_(elementsToRemove).forEach(function (element) {
4188 4189 				// "While element has children, insert the first child of element
4190 				// into the parent of element immediately before element,
4191 				// preserving ranges."
4192 				while (element.hasChildNodes()) {
4193 					movePreservingRanges(element.firstChild, element.parentNode, Dom.getIndexInParent(element), getActiveRange());
4194 				}
4195 
4196 				// "Remove element from its parent."
4197 				element.parentNode.removeChild(element);
4198 			});
4199 
4200 			// "If the active range's start node is an editable Text node, and its
4201 			// start offset is neither zero nor its start node's length, call
4202 			// splitText() on the active range's start node, with argument equal to
4203 			// the active range's start offset. Then set the active range's start
4204 			// node to the result, and its start offset to zero."
4205 			if (isEditable(getActiveRange().startContainer) && getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset != 0 && getActiveRange().startOffset != getNodeLength(getActiveRange().startContainer)) {
4206 				// Account for browsers not following range mutation rules
4207 				if (getActiveRange().startContainer == getActiveRange().endContainer) {
4208 					newEnd = getActiveRange().endOffset - getActiveRange().startOffset;
4209 					newNode = splitText(getActiveRange().startContainer, getActiveRange().startOffset);
4210 					getActiveRange().setStart(newNode, 0);
4211 					getActiveRange().setEnd(newNode, newEnd);
4212 				} else {
4213 					getActiveRange().setStart(splitText(getActiveRange().startContainer, getActiveRange().startOffset), 0);
4214 				}
4215 			}
4216 
4217 			// "If the active range's end node is an editable Text node, and its
4218 			// end offset is neither zero nor its end node's length, call
4219 			// splitText() on the active range's end node, with argument equal to
4220 			// the active range's end offset."
4221 			if (isEditable(getActiveRange().endContainer) && getActiveRange().endContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().endOffset != 0 && getActiveRange().endOffset != getNodeLength(getActiveRange().endContainer)) {
4222 				// IE seems to mutate the range incorrectly here, so we need
4223 				// correction here as well.  Have to be careful to set the range to
4224 				// something not including the text node so that getActiveRange()
4225 				// doesn't throw an exception due to a temporarily detached
4226 				// endpoint.
4227 				newStart = [getActiveRange().startContainer, getActiveRange().startOffset];
4228 				newEnd = [getActiveRange().endContainer, getActiveRange().endOffset];
4229 				getActiveRange().setEnd(document.documentElement, 0);
4230 				splitText(newEnd[0], newEnd[1]);
4231 				getActiveRange().setStart(newStart[0], newStart[1]);
4232 				getActiveRange().setEnd(newEnd[0], newEnd[1]);
4233 			}
4234 
4235 			// "Let node list consist of all editable nodes effectively contained
4236 			// in the active range."
4237 4238 			//
4239 			// "For each node in node list, while node's parent is a removeFormat
4240 			// candidate in the same editing host as node, split the parent of the
4241 			// one-node list consisting of node."
4242 			$_(getAllEffectivelyContainedNodes(getActiveRange(), isEditable)).forEach(function (node) {
4243 				while (isRemoveFormatCandidate(node.parentNode) && inSameEditingHost(node.parentNode, node)) {
4244 					splitParent([node], getActiveRange());
4245 4246 				}
4247 			});
4248 
4249 			// "For each of the entries in the following list, in the given order,
4250 			// set the selection's value to null, with command as given."
4251 			$_(["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"]).forEach(function (command) {
4252 				setSelectionValue(command, null, range);
4253 			});
4254 		}
4255 	};
4256 
4257 	//@}
4258 	///// The strikethrough command /////
4259 	//@{
4260 	commands.strikethrough = {
4261 		action: function (value, range) {
4262 			// "If queryCommandState("strikethrough") returns true, set the
4263 			// selection's value to null. Otherwise set the selection's value to
4264 			// "line-through"."
4265 			if (myQueryCommandState("strikethrough", range)) {
4266 				setSelectionValue("strikethrough", null, range);
4267 			} else {
4268 				setSelectionValue("strikethrough", "line-through", range);
4269 			}
4270 		},
4271 		inlineCommandActivatedValues: ["line-through"]
4272 	};
4273 
4274 	//@}
4275 	///// The subscript command /////
4276 	//@{
4277 	commands.subscript = {
4278 		action: function (value, range) {
4279 			// "Call queryCommandState("subscript"), and let state be the result."
4280 			var state = myQueryCommandState("subscript", range);
4281 
4282 			// "Set the selection's value to null."
4283 			setSelectionValue("subscript", null, range);
4284 
4285 			// "If state is false, set the selection's value to "subscript"."
4286 			if (!state) {
4287 				setSelectionValue("subscript", "subscript", range);
4288 			}
4289 		},
4290 		indeterm: function () {
4291 			// "True if either among editable Text nodes that are effectively
4292 			// contained in the active range, there is at least one with effective
4293 			// command value "subscript" and at least one with some other effective
4294 			// command value; or if there is some editable Text node effectively
4295 			// contained in the active range with effective command value "mixed".
4296 			// Otherwise false."
4297 			var nodes = getAllEffectivelyContainedNodes(getActiveRange(), function (node) {
4298 				return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
4299 			});
4300 			return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "subscript"; })
4301 					 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") != "subscript"; }))
4302 					|| $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "mixed"; }));
4303 		},
4304 		inlineCommandActivatedValues: ["subscript"]
4305 	};
4306 
4307 	//@}
4308 	///// The superscript command /////
4309 	//@{
4310 	commands.superscript = {
4311 		action: function (value, range) {
4312 			// "Call queryCommandState("superscript"), and let state be the
4313 			// result."
4314 			var state = myQueryCommandState("superscript", range);
4315 
4316 			// "Set the selection's value to null."
4317 			setSelectionValue("superscript", null, range);
4318 
4319 			// "If state is false, set the selection's value to "superscript"."
4320 			if (!state) {
4321 				setSelectionValue("superscript", "superscript", range);
4322 			}
4323 		},
4324 		indeterm: function () {
4325 			// "True if either among editable Text nodes that are effectively
4326 			// contained in the active range, there is at least one with effective
4327 			// command value "superscript" and at least one with some other
4328 			// effective command value; or if there is some editable Text node
4329 			// effectively contained in the active range with effective command
4330 			// value "mixed".  Otherwise false."
4331 			var nodes = getAllEffectivelyContainedNodes(
4332 				getActiveRange(),
4333 				function (node) {
4334 					return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
4335 				}
4336 			);
4337 			return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "superscript"; })
4338 					 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") != "superscript"; }))
4339 					|| $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "mixed"; }));
4340 		},
4341 		inlineCommandActivatedValues: ["superscript"]
4342 	};
4343 
4344 	//@}
4345 	///// The underline command /////
4346 	//@{
4347 	commands.underline = {
4348 		action: function (value, range) {
4349 			// "If queryCommandState("underline") returns true, set the selection's
4350 			// value to null. Otherwise set the selection's value to "underline"."
4351 			if (myQueryCommandState("underline", range)) {
4352 				setSelectionValue("underline", null, range);
4353 4354 			} else {
4355 				setSelectionValue("underline", "underline", range);
4356 			}
4357 		},
4358 		inlineCommandActivatedValues: ["underline"]
4359 	};
4360 
4361 	//@}
4362 	///// The unlink command /////
4363 	//@{
4364 	commands.unlink = {
4365 		action: function () {
4366 			// "Let hyperlinks be a list of every a element that has an href
4367 			// attribute and is contained in the active range or is an ancestor of
4368 			// one of its boundary points."
4369 			//
4370 			// As usual, take care to ensure it's tree order.  The correctness of
4371 			// the following is left as an exercise for the reader.
4372 			var range = getActiveRange();
4373 			var hyperlinks = [];
4374 			var node;
4375 			for (node = range.startContainer; node; node = node.parentNode) {
4376 				if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href")) {
4377 					hyperlinks.unshift(node);
4378 				}
4379 			}
4380 			for (node = range.startContainer; node != nextNodeDescendants(range.endContainer); node = nextNode(node)) {
4381 				if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href") && (isContained(node, range) || isAncestor(node, range.endContainer) || node == range.endContainer)) {
4382 					hyperlinks.push(node);
4383 				}
4384 			}
4385 
4386 			// "Clear the value of each member of hyperlinks."
4387 			var i;
4388 			for (i = 0; i < hyperlinks.length; i++) {
4389 				clearValue(hyperlinks[i], "unlink", range);
4390 			}
4391 		},
4392 		standardInlineValueCommand: true
4393 	};
4394 
4395 	//@}
4396 
4397 	/////////////////////////////////////
4398 	///// Block formatting commands /////
4399 	/////////////////////////////////////
4400 
4401 	///// Block formatting command definitions /////
4402 	//@{
4403 
4404 	// "An indentation element is either a blockquote, or a div that has a style
4405 	// attribute that sets "margin" or some subproperty of it."
4406 	function isIndentationElement(node) {
4407 		// Handling of indentation elements while deleting is somehow broken (pressing backspace
4408 		// in blockquotes wraps the blockquote into a div, ...)
4409 		// therefore for now, we pretend that indentation elements do not exist at all.
4410 		return false;
4411 	}
4412 
4413 	// "A simple indentation element is an indentation element that has no
4414 	// attributes other than one or more of
4415 	//
4416 	//   * "a style attribute that sets no properties other than "margin", "border",
4417 	//     "padding", or subproperties of those;
4418 	//   * "a class attribute;
4419 	//   * "a dir attribute."
4420 	function isSimpleIndentationElement(node) {
4421 		if (!isIndentationElement(node)) {
4422 			return false;
4423 		}
4424 
4425 		if (node.tagName != "BLOCKQUOTE" && node.tagName != "DIV") {
4426 			return false;
4427 		}
4428 
4429 		var i;
4430 		for (i = 0; i < node.attributes.length; i++) {
4431 			if (!isHtmlNamespace(node.attributes[i].namespaceURI) || jQuery.inArray(node.attributes[i].name, ["style", "class", "dir"]) == -1) {
4432 				return false;
4433 			}
4434 		}
4435 
4436 		if (typeof node.style.length !== 'undefined') {
4437 			for (i = 0; i < node.style.length; i++) {
4438 				// This is approximate, but it works well enough for my purposes.
4439 				if (!/^(-[a-z]+-)?(margin|border|padding)/.test(node.style[i])) {
4440 					return false;
4441 				}
4442 			}
4443 		} else {
4444 			var s;
4445 			/*jslint forin: true*/ //not sure whether node.style.hasOwnProperty is valid
4446 			for (s in node.style) {
4447 				// This is approximate, but it works well enough for my purposes.
4448 				if (!/^(-[a-z]+-)?(margin|border|padding)/.test(s) && node.style[s] && node.style[s] !== 0 && node.style[s] !== 'false') {
4449 					return false;
4450 				}
4451 			}
4452 			/*jslint forin: false*/
4453 		}
4454 
4455 		return true;
4456 	}
4457 
4458 	// "A non-list single-line container is an HTML element with local name
4459 	// "address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre",
4460 	// or "xmp"."
4461 	function isNonListSingleLineContainer(node) {
4462 		return isHtmlElementInArray(node, ["address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre", "xmp"]);
4463 	}
4464 
4465 	// "A single-line container is either a non-list single-line container, or an
4466 	// HTML element with local name "li", "dt", or "dd"."
4467 	function isSingleLineContainer(node) {
4468 		return isNonListSingleLineContainer(node) || isHtmlElementInArray(node, ["li", "dt", "dd"]);
4469 	}
4470 
4471 	// "The default single-line container name is "p"."
4472 	var defaultSingleLineContainerName = "p";
4473 
4474 	//@}
4475 	///// Check whether the given element is an end break /////
4476 	//@{
4477 	function isEndBreak(element) {
4478 		return (isNamedHtmlElement(element, 'br') && element.parentNode.lastChild === element);
4479 	}
4480 
4481 	//@}
4482 	///// Create an end break /////
4483 	//@{
4484 	function createEndBreak() {
4485 		return document.createElement("br");
4486 	}
4487 
4488 	/**
4489 	 * Ensure the container is editable
4490 	 * E.g. when called for an empty paragraph or header, and the browser is not IE,
4491 	 * we need to append a br (marked with class aloha-end-br)
4492 	 * For IE7, there is a special behaviour that will append zero-width whitespace
4493 	 * @param {DOMNode} container
4494 	 */
4495 	function ensureContainerEditable(container) {
4496 		if (!container) {
4497 			return;
4498 		}
4499 
4500 		// Because it is useful to be able to completely empty the contents of
4501 		// an editing host during editing.  So long as the container's
4502 		// contenteditable attribute is "true" (as is the case during editing),
4503 		// the element will be rendered visibly in all browsers.  This fact
4504 		// allows us to not have to prop up the container with a <br> in order
4505 		// to keep it accessible to the editor.
4506 		if (isEditingHost(container)) {
4507 			return;
4508 		}
4509 
4510 		if (isNamedHtmlElement(container.lastChild, "br")) {
4511 			return;
4512 		}
4513 
4514 		if ($_(container.childNodes).some(isVisible)) {
4515 			return;
4516 		}
4517 
4518 		if (!jQuery.browser.msie) {
4519 			// for normal browsers, the end-br will do
4520 			container.appendChild(createEndBreak());
4521 		} else if (jQuery.browser.msie && jQuery.browser.version <= 7 && isHtmlElementInArray(container, ["p", "h1", "h2", "h3", "h4", "h5", "h6", "pre", "blockquote"])) {
4522 			// for IE7, we need to insert a text node containing a single zero-width whitespace character
4523 			if (!container.firstChild) {
4524 				container.appendChild(document.createTextNode('\u200b'));
4525 			}
4526 		}
4527 	}
4528 
4529 	/**
4530 	 * Node names that can not be unwrapped.
4531 	 *
4532 	 * @const
4533 	 * @type {string[]}
4534 	 */
4535 	var NOT_UNWRAPPABLE_NODES = ['TABLE', 'OL', 'UL', 'DL'];
4536 
4537 	/**
4538 	 * Checks if `node` can be unwrapped.
4539 	 *
4540 	 * @param  {Element} node
4541 	 * @return {boolean}
4542 	 */
4543 	function isUnwrappable(node) {
4544 		return jQuery.inArray(node.nodeName, NOT_UNWRAPPABLE_NODES) === -1;
4545 	}
4546 	//@}
4547 	///// Assorted block formatting command algorithms /////
4548 	//@{
4549 
4550 	function fixDisallowedAncestors(node, range) {
4551 		var i;
4552 
4553 		// "If node is not editable, abort these steps."
4554 		if (!isEditable(node)) {
4555 			return;
4556 		}
4557 
4558 		// "If node is not an allowed child of any of its ancestors in the same
4559 		// editing host, and is not an HTML element with local name equal to the
4560 		// default single-line container name:"
4561 		if ($_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); })
4562 			    && !isHtmlElement_obsolete(node, defaultSingleLineContainerName)) {
4563 			// "If node is a dd or dt, wrap the one-node list consisting of node,
4564 			// with sibling criteria returning true for any dl with no attributes
4565 			// and false otherwise, and new parent instructions returning the
4566 			// result of calling createElement("dl") on the context object. Then
4567 			// abort these steps."
4568 			if (isHtmlElementInArray(node, ["dd", "dt"])) {
4569 				wrap(
4570 					[node],
4571 					function (sibling) {
4572 						return isNamedHtmlElement(sibling, 'dl') && !sibling.attributes.length;
4573 					},
4574 					function () {
4575 						return document.createElement("dl");
4576 					},
4577 					range
4578 				);
4579 				return;
4580 			}
4581 
4582 			// "If node is not a prohibited paragraph child, abort these steps."
4583 			if (!isProhibitedParagraphChild(node)) {
4584 				return;
4585 			}
4586 
4587 			// "Set the tag name of node to the default single-line container name,
4588 			// and let node be the result."
4589 			node = setTagName(node, defaultSingleLineContainerName, range);
4590 
4591 			ensureContainerEditable(node);
4592 
4593 			// "Fix disallowed ancestors of node."
4594 			fixDisallowedAncestors(node, range);
4595 
4596 			// "Let descendants be all descendants of node."
4597 			var descendants = getDescendants(node);
4598 
4599 			// "Fix disallowed ancestors of each member of descendants."
4600 			for (i = 0; i < descendants.length; i++) {
4601 				fixDisallowedAncestors(descendants[i], range);
4602 			}
4603 
4604 			// "Abort these steps."
4605 			return;
4606 		}
4607 
4608 		// "Record the values of the one-node list consisting of node, and let
4609 		// values be the result."
4610 		var values = recordValues([node]);
4611 		var newStartOffset, newEndOffset;
4612 
4613 		// "While node is not an allowed child of its parent, split the parent of
4614 		// the one-node list consisting of node."
4615 		while (!isAllowedChild(node, node.parentNode)) {
4616 			// If the parent contains only this node and possibly empty text nodes, we rather want to unwrap the node, instead of splitting.
4617 			// With splitting, we would get empty nodes, like:
4618 			// split: <p><p>foo</p></p> -> <p></p><p>foo</p> (bad)
4619 			// unwrap: <p><p>foo</p></p> -> <p>foo</p> (good)
4620 
4621 			// First remove empty text nodes that are children of the parent and correct the range if necessary
4622 			// we do this to have the node being the only child of its parent, so that we can replace the parent with the node
4623 			for (i = node.parentNode.childNodes.length - 1; i >= 0; --i) {
4624 				if (node.parentNode.childNodes[i].nodeType == 3 && node.parentNode.childNodes[i].data.length == 0) {
4625 					// we remove the empty text node
4626 					node.parentNode.removeChild(node.parentNode.childNodes[i]);
4627 
4628 					// if the range points to somewhere behind the removed text node, we reduce the offset
4629 					if (range.startContainer == node.parentNode && range.startOffset > i) {
4630 						range.startOffset--;
4631 					}
4632 					if (range.endContainer == node.parentNode && range.endOffset > i) {
4633 						range.endOffset--;
4634 					}
4635 				}
4636 			}
4637 
4638 			// now that the parent has only the node as child (because we
4639 			// removed any existing empty text nodes), we can safely unwrap the
4640 			// node's contents, and correct the range if necessary
4641 			// if the node is unwrappable (table, lists) the node is not unwrapped
4642 			// but splitted.
4643 			if (node.parentNode.childNodes.length == 1 && isUnwrappable(node)) {
4644 				newStartOffset = range.startOffset;
4645 				newEndOffset = range.endOffset;
4646 
4647 				if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) {
4648 					// the node (1 element) will be replaced by its contents (contents().length elements)
4649 					newStartOffset = range.startOffset + (jQuery(node).contents().length - 1);
4650 				}
4651 				if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) {
4652 					// the node (1 element) will be replaced by its contents (contents().length elements)
4653 					newEndOffset = range.endOffset + (jQuery(node).contents().length - 1);
4654 				}
4655 				jQuery(node).contents().unwrap();
4656 				range.startOffset = newStartOffset;
4657 				range.endOffset = newEndOffset;
4658 				// after unwrapping, we are done
4659 				break;
4660 			} else {
4661 				// store the original parent
4662 				var originalParent = node.parentNode;
4663 				splitParent([node], range);
4664 				// check whether the parent did not change, so the split did not work, e.g.
4665 				// because we already reached the editing host itself.
4666 				// this situation can occur, e.g. when we insert a paragraph into an contenteditable span
4667 				// in such cases, we just unwrap the contents of the paragraph
4668 				if (originalParent === node.parentNode) {
4669 					// so we unwrap now
4670 					newStartOffset = range.startOffset;
4671 					newEndOffset = range.endOffset;
4672 
4673 					if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) {
4674 						// the node (1 element) will be replaced by its contents (contents().length elements)
4675 						newStartOffset = range.startOffset + (jQuery(node).contents().length - 1);
4676 					}
4677 					if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) {
4678 						// the node (1 element) will be replaced by its contents (contents().length elements)
4679 						newEndOffset = range.endOffset + (jQuery(node).contents().length - 1);
4680 					}
4681 					jQuery(node).contents().unwrap();
4682 					range.startOffset = newStartOffset;
4683 					range.endOffset = newEndOffset;
4684 					// after unwrapping, we are done
4685 					break;
4686 				}
4687 			}
4688 		}
4689 
4690 		// "Restore the values from values."
4691 		restoreValues(values, range);
4692 	}
4693 
4694 	/**
4695 	 * This method "normalizes" sublists of the given item (which is supposed to be a LI):
4696 	 * If sublists are found in the LI element, they are moved directly into the outer list.
4697 	 * @param item item
4698 	 * @param range range, which will be modified if necessary
4699 4700 	 */
4701 	function normalizeSublists(item, range) {
4702 		// "If item is not an li or it is not editable or its parent is not
4703 		// editable, abort these steps."
4704 		if (!isNamedHtmlElement(item, 'LI') || !isEditable(item) || !isEditable(item.parentNode)) {
4705 			return;
4706 		}
4707 
4708 		// "Let new item be null."
4709 		var newItem = null;
4710 
4711 		function isOlUl(node) {
4712 			return isHtmlElementInArray(node, ["OL", "UL"]);
4713 		}
4714 
4715 		// "While item has an ol or ul child:"
4716 		while ($_(item.childNodes).some(isOlUl)) {
4717 			// "Let child be the last child of item."
4718 			var child = item.lastChild;
4719 
4720 			// "If child is an ol or ul, or new item is null and child is a Text
4721 			// node whose data consists of zero of more space characters:"
4722 			if (isHtmlElementInArray(child, ["OL", "UL"]) || (!newItem && child.nodeType == $_.Node.TEXT_NODE && /^[ \t\n\f\r]*$/.test(child.data))) {
4723 				// "Set new item to null."
4724 				newItem = null;
4725 
4726 				// "Insert child into the parent of item immediately following
4727 				// item, preserving ranges."
4728 				movePreservingRanges(child, item.parentNode, 1 + Dom.getIndexInParent(item), range);
4729 
4730 				// "Otherwise:"
4731 			} else {
4732 				// "If new item is null, let new item be the result of calling
4733 				// createElement("li") on the ownerDocument of item, then insert
4734 				// new item into the parent of item immediately after item."
4735 				if (!newItem) {
4736 					newItem = item.ownerDocument.createElement("li");
4737 					item.parentNode.insertBefore(newItem, item.nextSibling);
4738 				}
4739 
4740 				// "Insert child into new item as its first child, preserving
4741 				// ranges."
4742 				movePreservingRanges(child, newItem, 0, range);
4743 			}
4744 		}
4745 	}
4746 
4747 	/**
4748 	 * This method is the exact opposite of normalizeSublists.
4749 	 * List nodes directly nested into each other are corrected to be nested in li elements (so that the resulting lists conform the html5 specification)
4750 	 * @param item list node
4751 	 * @param range range, which is preserved when modifying the list
4752 	 */
4753 	function unNormalizeSublists(item, range) {
4754 		// "If item is not an ol or ol or it is not editable or its parent is not
4755 		// editable, abort these steps."
4756 		if (!isHtmlElementInArray(item, ["OL", "UL"]) || !isEditable(item)) {
4757 			return;
4758 		}
4759 
4760 		var $list = jQuery(item);
4761 		$list.children("ol,ul").each(function (index, sublist) {
4762 			if (isNamedHtmlElement(sublist.previousSibling, "LI")) {
4763 				// move the sublist into the LI
4764 				movePreservingRanges(sublist, sublist.previousSibling, sublist.previousSibling.childNodes.length, range);
4765 			}
4766 		});
4767 	}
4768 
4769 	//@}
4770 	///// Block-extending a range /////
4771 	//@{
4772 
4773 	function blockExtend(range) {
4774 4775 		// "Let start node, start offset, end node, and end offset be the start
4776 		// and end nodes and offsets of the range."
4777 		var startNode = range.startContainer;
4778 		var startOffset = range.startOffset;
4779 		var endNode = range.endContainer;
4780 		var endOffset = range.endOffset;
4781 
4782 		// "If some ancestor container of start node is an li, set start offset to
4783 		// the index of the last such li in tree order, and set start node to that
4784 		// li's parent."
4785 		var liAncestors = $_(getAncestors(startNode).concat(startNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1);
4786 		if (liAncestors.length) {
4787 			startOffset = Dom.getIndexInParent(liAncestors[0]);
4788 			startNode = liAncestors[0].parentNode;
4789 		}
4790 
4791 		// "If (start node, start offset) is not a block start point, repeat the
4792 		// following steps:"
4793 		if (!isBlockStartPoint(startNode, startOffset)) {
4794 			do {
4795 				// "If start offset is zero, set it to start node's index, then set
4796 				// start node to its parent."
4797 				if (startOffset == 0) {
4798 					startOffset = Dom.getIndexInParent(startNode);
4799 					startNode = startNode.parentNode;
4800 
4801 					// "Otherwise, subtract one from start offset."
4802 				} else {
4803 					startOffset--;
4804 				}
4805 
4806 				// "If (start node, start offset) is a block boundary point, break from
4807 				// this loop."
4808 			} while (!isBlockBoundaryPoint(startNode, startOffset));
4809 		}
4810 
4811 		// "While start offset is zero and start node's parent is not null, set
4812 		// start offset to start node's index, then set start node to its parent."
4813 		while (startOffset == 0 && startNode.parentNode) {
4814 			startOffset = Dom.getIndexInParent(startNode);
4815 			startNode = startNode.parentNode;
4816 		}
4817 
4818 		// "If some ancestor container of end node is an li, set end offset to one
4819 		// plus the index of the last such li in tree order, and set end node to
4820 		// that li's parent."
4821 		liAncestors = $_(getAncestors(endNode).concat(endNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1);
4822 		if (liAncestors.length) {
4823 			endOffset = 1 + Dom.getIndexInParent(liAncestors[0]);
4824 			endNode = liAncestors[0].parentNode;
4825 		}
4826 
4827 		// "If (end node, end offset) is not a block end point, repeat the
4828 		// following steps:"
4829 		if (!isBlockEndPoint(endNode, endOffset)) {
4830 			do {
4831 				// "If end offset is end node's length, set it to one plus end node's
4832 				// index, then set end node to its parent."
4833 				if (endOffset == getNodeLength(endNode)) {
4834 					endOffset = 1 + Dom.getIndexInParent(endNode);
4835 					endNode = endNode.parentNode;
4836 
4837 					// "Otherwise, add one to end offset.
4838 				} else {
4839 					endOffset++;
4840 				}
4841 
4842 				// "If (end node, end offset) is a block boundary point, break from
4843 				// this loop."
4844 			} while (!isBlockBoundaryPoint(endNode, endOffset));
4845 		}
4846 
4847 		// "While end offset is end node's length and end node's parent is not
4848 		// null, set end offset to one plus end node's index, then set end node to
4849 		// its parent."
4850 		while (endOffset == getNodeLength(endNode) && endNode.parentNode) {
4851 			endOffset = 1 + Dom.getIndexInParent(endNode);
4852 			endNode = endNode.parentNode;
4853 		}
4854 
4855 		// "Let new range be a new range whose start and end nodes and offsets
4856 		// are start node, start offset, end node, and end offset."
4857 		var newRange = Aloha.createRange();
4858 		newRange.setStart(startNode, startOffset);
4859 		newRange.setEnd(endNode, endOffset);
4860 
4861 		// "Return new range."
4862 		return newRange;
4863 	}
4864 
4865 	function getSelectionListState() {
4866 		// "Block-extend the active range, and let new range be the result."
4867 		var newRange = blockExtend(getActiveRange());
4868 
4869 		// "Let node list be a list of nodes, initially empty."
4870 		//
4871 		// "For each node contained in new range, append node to node list if the
4872 		// last member of node list (if any) is not an ancestor of node; node is
4873 		// editable; node is not an indentation element; and node is either an ol
4874 		// or ul, or the child of an ol or ul, or an allowed child of "li"."
4875 		var nodeList = getContainedNodes(newRange, function (node) {
4876 			return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]) || isAllowedChild(node, "li"));
4877 		});
4878 
4879 		// "If node list is empty, return "none"."
4880 		if (!nodeList.length) {
4881 			return "none";
4882 		}
4883 
4884 4885 		// "If every member of node list is either an ol or the child of an ol or
4886 		// the child of an li child of an ol, and none is a ul or an ancestor of a
4887 		// ul, return "ol"."
4888 		if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ol')
4889 														 || isNamedHtmlElement(node.parentNode, "ol")
4890 														 || (isNamedHtmlElement(node.parentNode, "li")
4891 															 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); })
4892 			    && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ul') || (node.querySelector && node.querySelector("ul")); })) {
4893 			return "ol";
4894 		}
4895 
4896 		// "If every member of node list is either a ul or the child of a ul or the
4897 		// child of an li child of a ul, and none is an ol or an ancestor of an ol,
4898 		// return "ul"."
4899 		if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ul')
4900 														 || isNamedHtmlElement(node.parentNode, "ul")
4901 														 || (isNamedHtmlElement(node.parentNode, "li")
4902 															 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); })
4903 			    && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ol') || (node.querySelector && node.querySelector("ol")); })) {
4904 			return "ul";
4905 		}
4906 
4907 		var hasOl = $_(nodeList).some(function (node) {
4908 			return (isNamedHtmlElement(node, 'ol')
4909 					|| isNamedHtmlElement(node.parentNode, "ol")
4910 					|| (node.querySelector && node.querySelector("ol"))
4911 					|| (isNamedHtmlElement(node.parentNode, "li")
4912 						&& isNamedHtmlElement(node.parentNode.parentNode, "ol")));
4913 		});
4914 		var hasUl = $_(nodeList).some(function (node) {
4915 			return (isNamedHtmlElement(node, 'ul')
4916 					|| isNamedHtmlElement(node.parentNode, "ul")
4917 					|| (node.querySelector && node.querySelector("ul"))
4918 					|| (isNamedHtmlElement(node.parentNode, "li")
4919 						&& isNamedHtmlElement(node.parentNode.parentNode, "ul")));
4920 		});
4921 		// "If some member of node list is either an ol or the child or ancestor of
4922 		// an ol or the child of an li child of an ol, and some member of node list
4923 		// is either a ul or the child or ancestor of a ul or the child of an li
4924 		// child of a ul, return "mixed"."
4925 		if (hasOl && hasUl) {
4926 			return "mixed";
4927 		}
4928 
4929 		// "If some member of node list is either an ol or the child or ancestor of
4930 		// an ol or the child of an li child of an ol, return "mixed ol"."
4931 		if (hasOl) {
4932 			return "mixed ol";
4933 		}
4934 
4935 		// "If some member of node list is either a ul or the child or ancestor of
4936 		// a ul or the child of an li child of a ul, return "mixed ul"."
4937 		if (hasUl) {
4938 			return "mixed ul";
4939 		}
4940 
4941 		// "Return "none"."
4942 		return "none";
4943 	}
4944 
4945 	function getAlignmentValue(node) {
4946 		// "While node is neither null nor an Element, or it is an Element but its
4947 		// "display" property has resolved value "inline" or "none", set node to
4948 		// its parent."
4949 		while ((node && node.nodeType != $_.Node.ELEMENT_NODE) || (node.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(node).display, ["inline", "none"]) != -1)) {
4950 			node = node.parentNode;
4951 		}
4952 
4953 		// "If node is not an Element, return "left"."
4954 		if (!node || node.nodeType != $_.Node.ELEMENT_NODE) {
4955 			return "left";
4956 		}
4957 
4958 		var resolvedValue = $_.getComputedStyle(node).textAlign
4959 		// Hack around browser non-standardness
4960 			.replace(/^-(moz|webkit)-/, "").replace(/^auto$/, "start");
4961 
4962 		// "If node's "text-align" property has resolved value "start", return
4963 		// "left" if the directionality of node is "ltr", "right" if it is "rtl"."
4964 		if (resolvedValue == "start") {
4965 			return getDirectionality(node) == "ltr" ? "left" : "right";
4966 		}
4967 
4968 		// "If node's "text-align" property has resolved value "end", return
4969 		// "right" if the directionality of node is "ltr", "left" if it is "rtl"."
4970 		if (resolvedValue == "end") {
4971 			return getDirectionality(node) == "ltr" ? "right" : "left";
4972 		}
4973 
4974 		// "If node's "text-align" property has resolved value "center", "justify",
4975 		// "left", or "right", return that value."
4976 		if (jQuery.inArray(resolvedValue, ["center", "justify", "left", "right"]) != -1) {
4977 			return resolvedValue;
4978 		}
4979 
4980 		// "Return "left"."
4981 		return "left";
4982 	}
4983 
4984 	//@}
4985 	///// Recording and restoring overrides /////
4986 	//@{
4987 
4988 	function recordCurrentOverrides(range) {
4989 		// "Let overrides be a list of (string, string or boolean) ordered pairs,
4990 		// initially empty."
4991 		var overrides = [];
4992 
4993 		// "If there is a value override for "createLink", add ("createLink", value
4994 		// override for "createLink") to overrides."
4995 		if (getValueOverride("createlink", range) !== undefined) {
4996 			overrides.push(["createlink", getValueOverride("createlink", range)]);
4997 		}
4998 
4999 		// "For each command in the list "bold", "italic", "strikethrough",
5000 		// "subscript", "superscript", "underline", in order: if there is a state
5001 		// override for command, add (command, command's state override) to
5002 		// overrides."
5003 		$_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) {
5004 			if (getStateOverride(command, range) !== undefined) {
5005 				overrides.push([command, getStateOverride(command, range)]);
5006 			}
5007 		});
5008 
5009 		// "For each command in the list "fontName", "fontSize", "foreColor",
5010 		// "hiliteColor", in order: if there is a value override for command, add
5011 		// (command, command's value override) to overrides."
5012 		$_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) {
5013 			if (getValueOverride(command, range) !== undefined) {
5014 				overrides.push([command, getValueOverride(command, range)]);
5015 			}
5016 		});
5017 
5018 		// "Return overrides."
5019 		return overrides;
5020 	}
5021 
5022 	function recordCurrentStatesAndValues(range) {
5023 		// "Let overrides be a list of (string, string or boolean) ordered pairs,
5024 		// initially empty."
5025 		var overrides = [];
5026 
5027 		// "Let node be the first editable Text node effectively contained in the
5028 		// active range, or null if there is none."
5029 		var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) {
5030 			return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
5031 		})[0];
5032 
5033 		// "If node is null, return overrides."
5034 		if (!node) {
5035 			return overrides;
5036 		}
5037 
5038 		// "Add ("createLink", value for "createLink") to overrides."
5039 		overrides.push(["createlink", commands.createlink.value(range)]);
5040 
5041 		// "For each command in the list "bold", "italic", "strikethrough",
5042 		// "subscript", "superscript", "underline", in order: if node's effective
5043 		// command value for command is one of its inline command activated values,
5044 		// add (command, true) to overrides, and otherwise add (command, false) to
5045 		// overrides."
5046 		$_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) {
5047 			if ($_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1) {
5048 				overrides.push([command, true]);
5049 			} else {
5050 				overrides.push([command, false]);
5051 			}
5052 		});
5053 
5054 		// "For each command in the list "fontName", "foreColor", "hiliteColor", in
5055 		// order: add (command, command's value) to overrides."
5056 
5057 		$_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) {
5058 			overrides.push([command, commands[command].value(range)]);
5059 		});
5060 
5061 		// "Add ("fontSize", node's effective command value for "fontSize") to
5062 		// overrides."
5063 		overrides.push(["fontsize", getEffectiveCommandValue(node, "fontsize")]);
5064 
5065 		// "Return overrides."
5066 		return overrides;
5067 	}
5068 
5069 	function restoreStatesAndValues(overrides, range) {
5070 		var i;
5071 		var command;
5072 		var override;
5073 		// "Let node be the first editable Text node effectively contained in the
5074 		// active range, or null if there is none."
5075 		var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) {
5076 			return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
5077 		})[0];
5078 
5079 		function isEditableTextNode(node) {
5080 			return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
5081 		}
5082 
5083 		// "If node is not null, then for each (command, override) pair in
5084 		// overrides, in order:"
5085 		if (node) {
5086 
5087 			for (i = 0; i < overrides.length; i++) {
5088 				command = overrides[i][0];
5089 				override = overrides[i][1];
5090 
5091 				// "If override is a boolean, and queryCommandState(command)
5092 				// returns something different from override, call
5093 				// execCommand(command)."
5094 				if (typeof override == "boolean" && myQueryCommandState(command, range) != override) {
5095 					myExecCommand(command, false, override, range);
5096 
5097 					// "Otherwise, if override is a string, and command is not
5098 					// "fontSize", and queryCommandValue(command) returns something not
5099 					// equivalent to override, call execCommand(command, false,
5100 					// override)."
5101 				} else if (typeof override == "string" && command != "fontsize" && !areEquivalentValues(command, myQueryCommandValue(command, range), override)) {
5102 					myExecCommand(command, false, override, range);
5103 
5104 					// "Otherwise, if override is a string; and command is "fontSize";
5105 					// and either there is a value override for "fontSize" that is not
5106 					// equal to override, or there is no value override for "fontSize"
5107 					// and node's effective command value for "fontSize" is not loosely
5108 					// equivalent to override: call execCommand("fontSize", false,
5109 					// override)."
5110 				} else if (typeof override == "string"
5111 						   && command == "fontsize"
5112 						   && ((getValueOverride("fontsize", range) !== undefined
5113 								&& getValueOverride("fontsize", range) !== override)
5114 							   || (getValueOverride("fontsize", range) === undefined
5115 								   && !areLooselyEquivalentValues(command, getEffectiveCommandValue(node, "fontsize"), override)))) {
5116 					myExecCommand("fontsize", false, override, range);
5117 
5118 					// "Otherwise, continue this loop from the beginning."
5119 				} else {
5120 					continue;
5121 				}
5122 
5123 				// "Set node to the first editable Text node effectively contained
5124 				// in the active range, if there is one."
5125 				node = $_(getAllEffectivelyContainedNodes(range)).filter(isEditableTextNode)[0] || node;
5126 			}
5127 
5128 			// "Otherwise, for each (command, override) pair in overrides, in order:"
5129 		} else {
5130 			for (i = 0; i < overrides.length; i++) {
5131 				command = overrides[i][0];
5132 				override = overrides[i][1];
5133 
5134 				// "If override is a boolean, set the state override for command to
5135 				// override."
5136 				if (typeof override == "boolean") {
5137 					setStateOverride(command, override, range);
5138 				}
5139 
5140 				// "If override is a string, set the value override for command to
5141 				// override."
5142 				if (typeof override == "string") {
5143 					setValueOverride(command, override, range);
5144 				}
5145 			}
5146 		}
5147 	}
5148 
5149 	//@}
5150 	///// Canonical space sequences /////
5151 	//@{
5152 
5153 	function canonicalSpaceSequence(n, nonBreakingStart, nonBreakingEnd) {
5154 		// "If n is zero, return the empty string."
5155 		if (n == 0) {
5156 			return "";
5157 		}
5158 
5159 		// "If n is one and both non-breaking start and non-breaking end are false,
5160 		// return a single space (U+0020)."
5161 		if (n == 1 && !nonBreakingStart && !nonBreakingEnd) {
5162 			return " ";
5163 		}
5164 
5165 		// "If n is one, return a single non-breaking space (U+00A0)."
5166 		if (n == 1) {
5167 			return "\xa0";
5168 		}
5169 
5170 		// "Let buffer be the empty string."
5171 		var buffer = "";
5172 
5173 		// "If non-breaking start is true, let repeated pair be U+00A0 U+0020.
5174 		// Otherwise, let it be U+0020 U+00A0."
5175 		var repeatedPair;
5176 		if (nonBreakingStart) {
5177 			repeatedPair = "\xa0 ";
5178 		} else {
5179 			repeatedPair = " \xa0";
5180 		}
5181 
5182 		// "While n is greater than three, append repeated pair to buffer and
5183 		// subtract two from n."
5184 		while (n > 3) {
5185 			buffer += repeatedPair;
5186 			n -= 2;
5187 		}
5188 
5189 		// "If n is three, append a three-element string to buffer depending on
5190 		// non-breaking start and non-breaking end:"
5191 		if (n == 3) {
5192 			buffer += !nonBreakingStart && !nonBreakingEnd ? " \xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0\xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0 \xa0" : "impossible";
5193 5194 
			// "Otherwise, append a two-element string to buffer depending on
5195 			// non-breaking start and non-breaking end:"
5196 		} else {
5197 			buffer += !nonBreakingStart && !nonBreakingEnd ? "\xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0\xa0" : "impossible";
5198 		}
5199 
5200 		// "Return buffer."
5201 		return buffer;
5202 	}
5203 
5204 	function canonicalizeWhitespace(node, offset) {
5205 		// "If node is neither editable nor an editing host, abort these steps."
5206 		if (!isEditable(node) && !isEditingHost(node)) {
5207 			return;
5208 		}
5209 
5210 		// "Let start node equal node and let start offset equal offset."
5211 		var startNode = node;
5212 		var startOffset = offset;
5213 
5214 		// "Repeat the following steps:"
5215 		while (true) {
5216 			// "If start node has a child in the same editing host with index start
5217 			// offset minus one, set start node to that child, then set start
5218 			// offset to start node's length."
5219 			if (0 <= startOffset - 1 && inSameEditingHost(startNode, startNode.childNodes[startOffset - 1])) {
5220 				startNode = startNode.childNodes[startOffset - 1];
5221 				startOffset = getNodeLength(startNode);
5222 
5223 				// "Otherwise, if start offset is zero and start node does not follow a
5224 				// line break and start node's parent is in the same editing host, set
5225 				// start offset to start node's index, then set start node to its
5226 				// parent."
5227 			} else if (startOffset == 0 && !followsLineBreak(startNode) && inSameEditingHost(startNode, startNode.parentNode)) {
5228 				startOffset = Dom.getIndexInParent(startNode);
5229 				startNode = startNode.parentNode;
5230 
5231 				// "Otherwise, if start node is a Text node and its parent's resolved
5232 				// value for "white-space" is neither "pre" nor "pre-wrap" and start
5233 				// offset is not zero and the (start offset − 1)st element of start
5234 				// node's data is a space (0x0020) or non-breaking space (0x00A0),
5235 				// subtract one from start offset."
5236 			} else if (startNode.nodeType == $_.Node.TEXT_NODE && jQuery.inArray($_.getComputedStyle(startNode.parentNode).whiteSpace, ["pre", "pre-wrap"]) == -1 && startOffset != 0 && /[ \xa0]/.test(startNode.data[startOffset - 1])) {
5237 				startOffset--;
5238 
5239 5240 				// "Otherwise, break from this loop."
5241 			} else {
5242 				break;
5243 			}
5244 5245 		}
5246 
5247 		// "Let end node equal start node and end offset equal start offset."
5248 		var endNode = startNode;
5249 		var endOffset = startOffset;
5250 
5251 		// "Let length equal zero."
5252 		var length = 0;
5253 
5254 		// "Let follows space be false."
5255 		var followsSpace = false;
5256 
5257 		// "Repeat the following steps:"
5258 		while (true) {
5259 			// "If end node has a child in the same editing host with index end
5260 			// offset, set end node to that child, then set end offset to zero."
5261 			if (endOffset < endNode.childNodes.length && inSameEditingHost(endNode, endNode.childNodes[endOffset])) {
5262 				endNode = endNode.childNodes[endOffset];
5263 				endOffset = 0;
5264 
5265 				// "Otherwise, if end offset is end node's length and end node does not
5266 				// precede a line break and end node's parent is in the same editing
5267 				// host, set end offset to one plus end node's index, then set end node
5268 				// to its parent."
5269 			} else if (endOffset == getNodeLength(endNode) && !precedesLineBreak(endNode) && inSameEditingHost(endNode, endNode.parentNode)) {
5270 				endOffset = 1 + Dom.getIndexInParent(endNode);
5271 				endNode = endNode.parentNode;
5272 
5273 				// "Otherwise, if end node is a Text node and its parent's resolved
5274 				// value for "white-space" is neither "pre" nor "pre-wrap" and end
5275 				// offset is not end node's length and the end offsetth element of
5276 				// end node's data is a space (0x0020) or non-breaking space (0x00A0):"
5277 			} else if (endNode.nodeType == $_.Node.TEXT_NODE && jQuery.inArray($_.getComputedStyle(endNode.parentNode).whiteSpace, ["pre", "pre-wrap"]) == -1 && endOffset != getNodeLength(endNode) && /[ \xa0]/.test(endNode.data[endOffset])) {
5278 				// "If follows space is true and the end offsetth element of end
5279 				// node's data is a space (0x0020), call deleteData(end offset, 1)
5280 				// on end node, then continue this loop from the beginning."
5281 				if (followsSpace && " " == endNode.data[endOffset]) {
5282 					endNode.deleteData(endOffset, 1);
5283 					continue;
5284 				}
5285 
5286 				// "Set follows space to true if the end offsetth element of end
5287 				// node's data is a space (0x0020), false otherwise."
5288 				followsSpace = " " == endNode.data[endOffset];
5289 
5290 				// "Add one to end offset."
5291 				endOffset++;
5292 
5293 				// "Add one to length."
5294 				length++;
5295 
5296 				// "Otherwise, break from this loop."
5297 			} else {
5298 				break;
5299 			}
5300 		}
5301 
5302 		// "Let replacement whitespace be the canonical space sequence of length
5303 		// length. non-breaking start is true if start offset is zero and start
5304 		// node follows a line break, and false otherwise. non-breaking end is true
5305 		// if end offset is end node's length and end node precedes a line break,
5306 		// and false otherwise."
5307 		var replacementWhitespace = canonicalSpaceSequence(length, startOffset == 0 && followsLineBreak(startNode), endOffset == getNodeLength(endNode) && precedesLineBreak(endNode));
5308 
5309 		// "While (start node, start offset) is before (end node, end offset):"
5310 		while (getPosition(startNode, startOffset, endNode, endOffset) == "before") {
5311 			// "If start node has a child with index start offset, set start node
5312 			// to that child, then set start offset to zero."
5313 			if (startOffset < startNode.childNodes.length) {
5314 				startNode = startNode.childNodes[startOffset];
5315 				startOffset = 0;
5316 
5317 				// "Otherwise, if start node is not a Text node or if start offset is
5318 				// start node's length, set start offset to one plus start node's
5319 				// index, then set start node to its parent."
5320 			} else if (startNode.nodeType != $_.Node.TEXT_NODE || startOffset == getNodeLength(startNode)) {
5321 				startOffset = 1 + Dom.getIndexInParent(startNode);
5322 				startNode = startNode.parentNode;
5323 
5324 				// "Otherwise:"
5325 			} else {
5326 				// "Remove the first element from replacement whitespace, and let
5327 				// element be that element."
5328 				var element = replacementWhitespace[0];
5329 				replacementWhitespace = replacementWhitespace.slice(1);
5330 
5331 				// "If element is not the same as the start offsetth element of
5332 				// start node's data:"
5333 				if (element != startNode.data[startOffset]) {
5334 					// "Call insertData(start offset, element) on start node."
5335 					startNode.insertData(startOffset, element);
5336 
5337 					// "Call deleteData(start offset + 1, 1) on start node."
5338 					startNode.deleteData(startOffset + 1, 1);
5339 				}
5340 
5341 				// "Add one to start offset."
5342 				startOffset++;
5343 			}
5344 		}
5345 	}
5346 
5347 	//@}
5348 	///// Deleting the contents of a range /////
5349 	//@{
5350 
5351 	function deleteContents(arg1, arg2, arg3, arg4, arg5) {
5352 		// We accept several different calling conventions:
5353 		//
5354 		// 1) A single argument, which is a range.
5355 		//
5356 		// 2) Two arguments, the first being a range and the second flags.
5357 		//
5358 		// 3) Four arguments, the start and end of a range.
5359 		//
5360 		// 4) Five arguments, the start and end of a range plus flags.
5361 		//
5362 		// The flags argument is a dictionary that can have up to two keys,
5363 		// blockMerging and stripWrappers, whose corresponding values are
5364 		// interpreted as boolean.  E.g., {stripWrappers: false}.
5365 		var range;
5366 		var flags = {};
5367 		var i;
5368 
5369 		if (arguments.length < 3) {
5370 			range = arg1;
5371 		} else {
5372 			range = Aloha.createRange();
5373 			range.setStart(arg1, arg2);
5374 			range.setEnd(arg3, arg4);
5375 		}
5376 		if (arguments.length == 2) {
5377 			flags = arg2;
5378 		}
5379 		if (arguments.length == 5) {
5380 			flags = arg5;
5381 		}
5382 
5383 		var blockMerging = null != flags.blockMerging ? !!flags.blockMerging : true;
5384 		var stripWrappers = null != flags.stripWrappers ? !!flags.stripWrappers : true;
5385 
5386 		// "If range is null, abort these steps and do nothing."
5387 		if (!range) {
5388 			return;
5389 		}
5390 
5391 		// "Let start node, start offset, end node, and end offset be range's start
5392 		// and end nodes and offsets."
5393 		var startNode = range.startContainer;
5394 		var startOffset = range.startOffset;
5395 		var endNode = range.endContainer;
5396 		var endOffset = range.endOffset;
5397 		var referenceNode;
5398 
5399 		// "While start node has at least one child:"
5400 		while (startNode.hasChildNodes()) {
5401 			// "If start offset is start node's length, and start node's parent is
5402 			// in the same editing host, and start node is an inline node, set
5403 			// start offset to one plus the index of start node, then set start
5404 			// node to its parent and continue this loop from the beginning."
5405 			if (startOffset == getNodeLength(startNode) && inSameEditingHost(startNode, startNode.parentNode) && isInlineNode(startNode)) {
5406 				startOffset = 1 + Dom.getIndexInParent(startNode);
5407 				startNode = startNode.parentNode;
5408 				continue;
5409 			}
5410 
5411 			// "If start offset is start node's length, break from this loop."
5412 			if (startOffset == getNodeLength(startNode)) {
5413 				break;
5414 			}
5415 
5416 			// "Let reference node be the child of start node with index equal to
5417 			// start offset."
5418 			referenceNode = startNode.childNodes[startOffset];
5419 
5420 			// "If reference node is a block node or an Element with no children,
5421 			// or is neither an Element nor a Text node, break from this loop."
5422 			if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) {
5423 				break;
5424 			}
5425 
5426 			// "Set start node to reference node and start offset to 0."
5427 			startNode = referenceNode;
5428 			startOffset = 0;
5429 		}
5430 
5431 		// "While end node has at least one child:"
5432 		while (endNode.hasChildNodes()) {
5433 			// "If end offset is 0, and end node's parent is in the same editing
5434 			// host, and end node is an inline node, set end offset to the index of
5435 			// end node, then set end node to its parent and continue this loop
5436 			// from the beginning."
5437 			if (endOffset == 0 && inSameEditingHost(endNode, endNode.parentNode) && isInlineNode(endNode)) {
5438 				endOffset = Dom.getIndexInParent(endNode);
5439 				endNode = endNode.parentNode;
5440 				continue;
5441 			}
5442 
5443 			// "If end offset is 0, break from this loop."
5444 			if (endOffset == 0) {
5445 				break;
5446 			}
5447 
5448 			// "Let reference node be the child of end node with index equal to end
5449 			// offset minus one."
5450 			referenceNode = endNode.childNodes[endOffset - 1];
5451 
5452 			// "If reference node is a block node or an Element with no children,
5453 			// or is neither an Element nor a Text node, break from this loop."
5454 			if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) {
5455 				break;
5456 			}
5457 
5458 			// "Set end node to reference node and end offset to the length of
5459 			// reference node."
5460 			endNode = referenceNode;
5461 			endOffset = getNodeLength(referenceNode);
5462 		}
5463 
5464 		// "If (end node, end offset) is not after (start node, start offset), set
5465 		// range's end to its start and abort these steps."
5466 		if (getPosition(endNode, endOffset, startNode, startOffset) !== "after") {
5467 			range.setEnd(range.startContainer, range.startOffset);
5468 			return range;
5469 		}
5470 
5471 		// "If start node is a Text node and start offset is 0, set start offset to
5472 		// the index of start node, then set start node to its parent."
5473 		// Commented out for unknown reason
5474 		//if (startNode.nodeType == $_.Node.TEXT_NODE && startOffset == 0 && startNode != endNode) {
5475 		//		startOffset = Dom.getIndexInParent(startNode);
5476 		//		startNode = startNode.parentNode;
5477 		//}
5478 
5479 		// "If end node is a Text node and end offset is its length, set end offset
5480 		// to one plus the index of end node, then set end node to its parent."
5481 		if (endNode.nodeType == $_.Node.TEXT_NODE && endOffset == getNodeLength(endNode) && startNode != endNode) {
5482 			endOffset = 1 + Dom.getIndexInParent(endNode);
5483 			endNode = endNode.parentNode;
5484 		}
5485 
5486 		// "Set range's start to (start node, start offset) and its end to (end
5487 		// node, end offset)."
5488 		range.setStart(startNode, startOffset);
5489 		range.setEnd(endNode, endOffset);
5490 
5491 		// "Let start block be the start node of range."
5492 		var startBlock = range.startContainer;
5493 
5494 		// "While start block's parent is in the same editing host and start block
5495 		// is an inline node, set start block to its parent."
5496 		while (inSameEditingHost(startBlock, startBlock.parentNode) && isInlineNode(startBlock)) {
5497 			startBlock = startBlock.parentNode;
5498 		}
5499 
5500 		// "If start block is neither a block node nor an editing host, or "span"
5501 		// is not an allowed child of start block, or start block is a td or th,
5502 		// set start block to null."
5503 		if ((!isBlockNode(startBlock) && !isEditingHost(startBlock)) || !isAllowedChild("span", startBlock) || isHtmlElementInArray(startBlock, ["td", "th"])) {
5504 			startBlock = null;
5505 		}
5506 
5507 		// "Let end block be the end node of range."
5508 		var endBlock = range.endContainer;
5509 
5510 		// "While end block's parent is in the same editing host and end block is
5511 		// an inline node, set end block to its parent."
5512 		while (inSameEditingHost(endBlock, endBlock.parentNode) && isInlineNode(endBlock)) {
5513 			endBlock = endBlock.parentNode;
5514 		}
5515 
5516 		// "If end block is neither a block node nor an editing host, or "span" is
5517 		// not an allowed child of end block, or end block is a td or th, set end
5518 		// block to null."
5519 		if ((!isBlockNode(endBlock) && !isEditingHost(endBlock)) || !isAllowedChild("span", endBlock) || isHtmlElementInArray(endBlock, ["td", "th"])) {
5520 			endBlock = null;
5521 		}
5522 
5523 		// "Record current states and values, and let overrides be the result."
5524 		var overrides = recordCurrentStatesAndValues(range);
5525 		var parent_;
5526 		// "If start node and end node are the same, and start node is an editable
5527 		// Text node:"
5528 		if (startNode == endNode && isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) {
5529 			// "Let parent be the parent of node."
5530 			parent_ = startNode.parentNode;
5531 
5532 			// "Call deleteData(start offset, end offset − start offset) on start
5533 			// node."
5534 			startNode.deleteData(startOffset, endOffset - startOffset);
5535 
5536 			// if deleting the text moved two spaces together, we replace the left one by a  , which makes the two spaces a visible
5537 			// two space sequence
5538 			if (startOffset > 0 && startNode.data.substr(startOffset - 1, 1) === ' ' && startOffset < startNode.data.length && startNode.data.substr(startOffset, 1) === ' ') {
5539 				startNode.replaceData(startOffset - 1, 1, '\xa0');
5540 			}
5541 
5542 			// "Canonicalize whitespace at (start node, start offset)."
5543 5544 			canonicalizeWhitespace(startNode, startOffset);
5545 
5546 			// "Set range's end to its start."
5547 			// Ok, also set the range's start to its start, because modifying the text
5548 			// might have somehow corrupted the range
5549 			range.setStart(range.startContainer, range.startOffset);
5550 			range.setEnd(range.startContainer, range.startOffset);
5551 
5552 			// "Restore states and values from overrides."
5553 			restoreStatesAndValues(overrides, range);
5554 
5555 			// "If parent is editable or an editing host, is not an inline node,
5556 			// and has no children, call createElement("br") on the context object
5557 			// and append the result as the last child of parent."
5558 			// only do this, if the offsetHeight is 0
5559 			if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) {
5560 				ensureContainerEditable(parent_);
5561 			}
5562 
5563 			// "Abort these steps."
5564 			return range;
5565 		}
5566 
5567 		// "If start node is an editable Text node, call deleteData() on it, with
5568 		// start offset as the first argument and (length of start node − start
5569 		// offset) as the second argument."
5570 		if (isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) {
5571 			startNode.deleteData(startOffset, getNodeLength(startNode) - startOffset);
5572 		}
5573 
5574 		// "Let node list be a list of nodes, initially empty."
5575 		//
5576 		// "For each node contained in range, append node to node list if the last
5577 		// member of node list (if any) is not an ancestor of node; node is
5578 		// editable; and node is not a thead, tbody, tfoot, tr, th, or td."
5579 		var nodeList = getContainedNodes(
5580 			range,
5581 			function (node) {
5582 				return isEditable(node) && !isHtmlElementInArray(node, ["thead", "tbody", "tfoot", "tr", "th", "td"]);
5583 			}
5584 		);
5585 
5586 		// "For each node in node list:"
5587 		for (i = 0; i < nodeList.length; i++) {
5588 			var node = nodeList[i];
5589 
5590 			// "Let parent be the parent of node."
5591 			parent_ = node.parentNode;
5592 
5593 			// "Remove node from parent."
5594 			parent_.removeChild(node);
5595 
5596 			// "If strip wrappers is true or parent is not an ancestor container of
5597 			// start node, while parent is an editable inline node with length 0,
5598 			// let grandparent be the parent of parent, then remove parent from
5599 			// grandparent, then set parent to grandparent."
5600 			if (stripWrappers || (!isAncestor(parent_, startNode) && parent_ != startNode)) {
5601 				while (isEditable(parent_) && isInlineNode(parent_) && getNodeLength(parent_) == 0) {
5602 					var grandparent = parent_.parentNode;
5603 					grandparent.removeChild(parent_);
5604 					parent_ = grandparent;
5605 				}
5606 			}
5607 
5608 			// "If parent is editable or an editing host, is not an inline node,
5609 			// and has no children, call createElement("br") on the context object
5610 			// and append the result as the last child of parent."
5611 			// only do this, if the offsetHeight is 0
5612 			if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) {
5613 				ensureContainerEditable(parent_);
5614 			}
5615 		}
5616 
5617 		// "If end node is an editable Text node, call deleteData(0, end offset) on
5618 		// it."
5619 		if (isEditable(endNode) && endNode.nodeType == $_.Node.TEXT_NODE) {
5620 			endNode.deleteData(0, endOffset);
5621 		}
5622 
5623 		// "Canonicalize whitespace at range's start."
5624 		canonicalizeWhitespace(range.startContainer, range.startOffset);
5625 
5626 		// "Canonicalize whitespace at range's end."
5627 		canonicalizeWhitespace(range.endContainer, range.endOffset);
5628 
5629 		// A reference to the position where a node is removed.
5630 		var pos;
5631 
5632 		// "If block merging is false, or start block or end block is null, or
5633 		// start block is not in the same editing host as end block, or start block
5634 		// and end block are the same:"
5635 		if (!blockMerging || !startBlock || !endBlock || !inSameEditingHost(startBlock, endBlock) || startBlock == endBlock) {
5636 			// "Set range's end to its start."
5637 			range.setEnd(range.startContainer, range.startOffset);
5638 
5639 			// Calling delete on the give markup:
5640 			// <editable><block><br>[]</block></editable>
5641 			// should result in:
5642 			// <editable>[]</editable>
5643 			var block = startBlock || endBlock;
5644 			if (isEmptyOnlyChildOfEditingHost(block)) {
5645 				pos = removeNode(block);
5646 				range.setStart(pos.node, pos.offset);
5647 				range.setEnd(pos.node, pos.offset);
5648 			}
5649 
5650 			// "Restore states and values from overrides."
5651 			restoreStatesAndValues(overrides, range);
5652 
5653 			// "Abort these steps."
5654 			return range;
5655 		}
5656 
5657 		// "If start block has one child, which is a collapsed block prop, remove
5658 		// its child from it."
5659 		if (startBlock.children.length == 1 && isCollapsedBlockProp(startBlock.firstChild)) {
5660 			startBlock.removeChild(startBlock.firstChild);
5661 		}
5662 
5663 		// "If end block has one child, which is a collapsed block prop, remove its
5664 		// child from it."
5665 		if (endBlock.children.length == 1 && isCollapsedBlockProp(endBlock.firstChild)) {
5666 			endBlock.removeChild(endBlock.firstChild);
5667 		}
5668 
5669 		var values;
5670 		// "If start block is an ancestor of end block:"
5671 		if (isAncestor(startBlock, endBlock)) {
5672 			// "Let reference node be end block."
5673 			referenceNode = endBlock;
5674 
5675 			// "While reference node is not a child of start block, set reference
5676 			// node to its parent."
5677 			while (referenceNode.parentNode != startBlock) {
5678 				referenceNode = referenceNode.parentNode;
5679 			}
5680 
5681 			// "Set the start and end of range to (start block, index of reference
5682 			// node)."
5683 			range.setStart(startBlock, Dom.getIndexInParent(referenceNode));
5684 			range.setEnd(startBlock, Dom.getIndexInParent(referenceNode));
5685 
5686 			// "If end block has no children:"
5687 			if (!endBlock.hasChildNodes()) {
5688 				// "While end block is editable and is the only child of its parent
5689 				// and is not a child of start block, let parent equal end block,
5690 				// then remove end block from parent, then set end block to
5691 				// parent."
5692 				while (isEditable(endBlock) && endBlock.parentNode.childNodes.length == 1 && endBlock.parentNode != startBlock) {
5693 					parent_ = endBlock;
5694 					parent_.removeChild(endBlock);
5695 					endBlock = parent_;
5696 				}
5697 
5698 				// "If end block is editable and is not an inline node, and its
5699 				// previousSibling and nextSibling are both inline nodes, call
5700 				// createElement("br") on the context object and insert it into end
5701 				// block's parent immediately after end block."
5702 
5703 				if (isEditable(endBlock) && !isInlineNode(endBlock) && isInlineNode(endBlock.previousSibling) && isInlineNode(endBlock.nextSibling)) {
5704 					endBlock.parentNode.insertBefore(document.createElement("br"), endBlock.nextSibling);
5705 				}
5706 
5707 				// "If end block is editable, remove it from its parent."
5708 				if (isEditable(endBlock)) {
5709 					endBlock.parentNode.removeChild(endBlock);
5710 				}
5711 
5712 				// "Restore states and values from overrides."
5713 				restoreStatesAndValues(overrides, range);
5714 
5715 				// "Abort these steps."
5716 				return range;
5717 			}
5718 
5719 			// "If end block's firstChild is not an inline node, restore states and
5720 			// values from overrides, then abort these steps."
5721 			if (!isInlineNode(endBlock.firstChild)) {
5722 				restoreStatesAndValues(overrides, range);
5723 				return range;
5724 			}
5725 
5726 			// "Let children be a list of nodes, initially empty."
5727 			var children = [];
5728 
5729 			// "Append the first child of end block to children."
5730 			children.push(endBlock.firstChild);
5731 
5732 			// "While children's last member is not a br, and children's last
5733 			// member's nextSibling is an inline node, append children's last
5734 			// member's nextSibling to children."
5735 			while (!isNamedHtmlElement(children[children.length - 1], "br") && isInlineNode(children[children.length - 1].nextSibling)) {
5736 				children.push(children[children.length - 1].nextSibling);
5737 			}
5738 
5739 			// "Record the values of children, and let values be the result."
5740 			values = recordValues(children);
5741 
5742 			// "While children's first member's parent is not start block, split
5743 			// the parent of children."
5744 			while (children[0].parentNode != startBlock) {
5745 				splitParent(children, range);
5746 			}
5747 
5748 			// "If children's first member's previousSibling is an editable br,
5749 			// remove that br from its parent."
5750 			if (isEditable(children[0].previousSibling) && isNamedHtmlElement(children[0].previousSibling, "br")) {
5751 				children[0].parentNode.removeChild(children[0].previousSibling);
5752 			}
5753 
5754 			// "Otherwise, if start block is a descendant of end block:"
5755 		} else if (isDescendant(startBlock, endBlock)) {
5756 			// "Set the start and end of range to (start block, length of start
5757 			// block)."
5758 			range.setStart(startBlock, getNodeLength(startBlock));
5759 			range.setEnd(startBlock, getNodeLength(startBlock));
5760 
5761 			// "Let reference node be start block."
5762 			referenceNode = startBlock;
5763 
5764 			// "While reference node is not a child of end block, set reference
5765 			// node to its parent."
5766 			while (referenceNode.parentNode != endBlock) {
5767 				referenceNode = referenceNode.parentNode;
5768 			}
5769 
5770 			// "If reference node's nextSibling is an inline node and start block's
5771 			// lastChild is a br, remove start block's lastChild from it."
5772 			if (isInlineNode(referenceNode.nextSibling) && isNamedHtmlElement(startBlock.lastChild, "br")) {
5773 				startBlock.removeChild(startBlock.lastChild);
5774 			}
5775 
5776 			// "Let nodes to move be a list of nodes, initially empty."
5777 			var nodesToMove = [];
5778 
5779 			// "If reference node's nextSibling is neither null nor a br nor a
5780 			// block node, append it to nodes to move."
5781 			if (referenceNode.nextSibling && !isNamedHtmlElement(referenceNode.nextSibling, "br") && !isBlockNode(referenceNode.nextSibling)) {
5782 				nodesToMove.push(referenceNode.nextSibling);
5783 			}
5784 
5785 			// "While nodes to move is nonempty and its last member's nextSibling
5786 			// is neither null nor a br nor a block node, append it to nodes to
5787 			// move."
5788 5789 			if (nodesToMove.length && nodesToMove[nodesToMove.length - 1].nextSibling && !isNamedHtmlElement(nodesToMove[nodesToMove.length - 1].nextSibling, "br") && !isBlockNode(nodesToMove[nodesToMove.length - 1].nextSibling)) {
5790 				nodesToMove.push(nodesToMove[nodesToMove.length - 1].nextSibling);
5791 			}
5792 
5793 			// "Record the values of nodes to move, and let values be the result."
5794 			values = recordValues(nodesToMove);
5795 
5796 			// "For each node in nodes to move, append node as the last child of
5797 			// start block, preserving ranges."
5798 			$_(nodesToMove).forEach(function (node) {
5799 				movePreservingRanges(node, startBlock, -1, range);
5800 			});
5801 
5802 			// "If the nextSibling of reference node is a br, remove it from its
5803 			// parent."
5804 			if (isNamedHtmlElement(referenceNode.nextSibling, "br")) {
5805 5806 				referenceNode.parentNode.removeChild(referenceNode.nextSibling);
5807 			}
5808 
5809 			// "Otherwise:"
5810 		} else {
5811 			// "Set the start and end of range to (start block, length of start
5812 			// block)."
5813 			range.setStart(startBlock, getNodeLength(startBlock));
5814 			range.setEnd(startBlock, getNodeLength(startBlock));
5815 
5816 			// "If end block's firstChild is an inline node and start block's
5817 			// lastChild is a br, remove start block's lastChild from it."
5818 			if (isInlineNode(endBlock.firstChild) && isNamedHtmlElement(startBlock.lastChild, "br")) {
5819 				startBlock.removeChild(startBlock.lastChild);
5820 			}
5821 
5822 			// "Record the values of end block's children, and let values be the
5823 			// result."
5824 			values = recordValues([].slice.call(toArray(endBlock.childNodes)));
5825 
5826 			// "While end block has children, append the first child of end block
5827 			// to start block, preserving ranges."
5828 			while (endBlock.hasChildNodes()) {
5829 				movePreservingRanges(endBlock.firstChild, startBlock, -1, range);
5830 			}
5831 
5832 			// "While end block has no children, let parent be the parent of end
5833 			// block, then remove end block from parent, then set end block to
5834 			// parent."
5835 			while (!endBlock.hasChildNodes()) {
5836 				parent_ = endBlock.parentNode;
5837 				parent_.removeChild(endBlock);
5838 				endBlock = parent_;
5839 			}
5840 		}
5841 
5842 		// "Restore the values from values."
5843 		restoreValues(values, range);
5844 
5845 		// Because otherwise calling deleteContents() with the given selection:
5846 		//
5847 		// <editable><block>[foo</block><block>bar]</block></editable>
5848 		//
5849 		// would result in:
5850 		//
5851 		// <editable><block>[]<br /></block></editable>
5852 		//
5853 		// instead of:
5854 		//
5855 		// <editable>[]</editable>
5856 		//
5857 		// Therefore, the below makes it possible to completely empty contents
5858 		// of editing hosts via operations like CTRL+A, DEL.
5859 		//
5860 		// If startBlock is empty, and startBlock is the immediate and only
5861 		// child of its parent editing host, then remove startBlock and collapse
5862 		// the selection at the beginning of the editing post.
5863 		if (isEmptyOnlyChildOfEditingHost(startBlock)) {
5864 			pos = removeNode(startBlock);
5865 			range.setStart(pos.node, pos.offset);
5866 			range.setEnd(pos.node, pos.offset);
5867 			startBlock = pos.node;
5868 		}
5869 
5870 		// "If start block has no children, call createElement("br") on the context
5871 		// object and append the result as the last child of start block."
5872 		ensureContainerEditable(startBlock);
5873 
5874 		// "Restore states and values from overrides."
5875 		restoreStatesAndValues(overrides, range);
5876 
5877 		return range;
5878 	}
5879 
5880 	// "To remove a node node while preserving its descendants, split the parent of
5881 	// node's children if it has any. If it has no children, instead remove it from
5882 	// its parent."
5883 	function removePreservingDescendants(node, range) {
5884 		if (node.hasChildNodes()) {
5885 			splitParent([].slice.call(toArray(node.childNodes)), range);
5886 		} else {
5887 			node.parentNode.removeChild(node);
5888 		}
5889 	}
5890 
5891 	//@}
5892 	///// Indenting and outdenting /////
5893 	//@{
5894 
5895 	function cleanLists(node, range) {
5896 		// remove any whitespace nodes around list nodes
5897 		if (node) {
5898 			jQuery(node).find('ul,ol,li').each(function () {
5899 				jQuery(this).contents().each(function () {
5900 					if (isWhitespaceNode(this)) {
5901 						var index = Dom.getIndexInParent(this);
5902 
5903 						// if the range points to somewhere behind the removed text node, we reduce the offset
5904 						if (range.startContainer === this.parentNode && range.startOffset > index) {
5905 							range.startOffset--;
5906 						} else if (range.startContainer === this) {
5907 							// the range starts in the removed text node, let it start right before
5908 							range.startContainer = this.parentNode;
5909 							range.startOffset = index;
5910 						}
5911 						// same thing for end of the range
5912 						if (range.endContainer === this.parentNode && range.endOffset > index) {
5913 							range.endOffset--;
5914 						} else if (range.endContainer === this) {
5915 							range.endContainer = this.parentNode;
5916 							range.endOffset = index;
5917 						}
5918 						// finally remove the whitespace node
5919 						jQuery(this).remove();
5920 					}
5921 				});
5922 			});
5923 		}
5924 5925 	}
5926 
5927 
5928 	//@}
5929 	///// Indenting and outdenting /////
5930 	//@{
5931 
5932 	function indentNodes(nodeList, range) {
5933 		// "If node list is empty, do nothing and abort these steps."
5934 		if (!nodeList.length) {
5935 			return;
5936 		}
5937 
5938 		// "Let first node be the first member of node list."
5939 		var firstNode = nodeList[0];
5940 
5941 		// "If first node's parent is an ol or ul:"
5942 		if (isHtmlElementInArray(firstNode.parentNode, ["OL", "UL"])) {
5943 			// "Let tag be the local name of the parent of first node."
5944 			var tag = firstNode.parentNode.tagName;
5945 
5946 			// "Wrap node list, with sibling criteria returning true for an HTML
5947 			// element with local name tag and false otherwise, and new parent
5948 			// instructions returning the result of calling createElement(tag) on
5949 			// the ownerDocument of first node."
5950 			wrap(
5951 				nodeList,
5952 				function (node) {
5953 					return isHtmlElement_obsolete(node, tag);
5954 				},
5955 				function () {
5956 					return firstNode.ownerDocument.createElement(tag);
5957 				},
5958 				range
5959 			);
5960 
5961 			// "Abort these steps."
5962 			return;
5963 		}
5964 
5965 		// "Wrap node list, with sibling criteria returning true for a simple
5966 		// indentation element and false otherwise, and new parent instructions
5967 		// returning the result of calling createElement("blockquote") on the
5968 		// ownerDocument of first node. Let new parent be the result."
5969 		var newParent = wrap(
5970 			nodeList,
5971 			function (node) {
5972 				return isSimpleIndentationElement(node);
5973 			},
5974 			function () {
5975 				return firstNode.ownerDocument.createElement("blockquote");
5976 			},
5977 			range
5978 		);
5979 
5980 		// "Fix disallowed ancestors of new parent."
5981 		fixDisallowedAncestors(newParent, range);
5982 	}
5983 
5984 	function outdentNode(node, range) {
5985 		// "If node is not editable, abort these steps."
5986 		if (!isEditable(node)) {
5987 			return;
5988 		}
5989 
5990 		// "If node is a simple indentation element, remove node, preserving its
5991 		// descendants.  Then abort these steps."
5992 		if (isSimpleIndentationElement(node)) {
5993 			removePreservingDescendants(node, range);
5994 			return;
5995 		}
5996 
5997 		// "If node is an indentation element:"
5998 		if (isIndentationElement(node)) {
5999 			// "Unset the class and dir attributes of node, if any."
6000 			node.removeAttribute("class");
6001 			node.removeAttribute("dir");
6002 
6003 			// "Unset the margin, padding, and border CSS properties of node."
6004 			node.style.margin = "";
6005 			node.style.padding = "";
6006 			node.style.border = "";
6007 			if (node.getAttribute("style") == "") {
6008 				node.removeAttribute("style");
6009 			}
6010 
6011 			// "Set the tag name of node to "div"."
6012 			setTagName(node, "div", range);
6013 
6014 			// "Abort these steps."
6015 			return;
6016 		}
6017 
6018 		// "Let current ancestor be node's parent."
6019 		var currentAncestor = node.parentNode;
6020 
6021 		// "Let ancestor list be a list of nodes, initially empty."
6022 		var ancestorList = [];
6023 
6024 		// "While current ancestor is an editable Element that is neither a simple
6025 		// indentation element nor an ol nor a ul, append current ancestor to
6026 		// ancestor list and then set current ancestor to its parent."
6027 		while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isSimpleIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) {
6028 			ancestorList.push(currentAncestor);
6029 			currentAncestor = currentAncestor.parentNode;
6030 		}
6031 
6032 		// "If current ancestor is not an editable simple indentation element:"
6033 		if (!isEditable(currentAncestor) || !isSimpleIndentationElement(currentAncestor)) {
6034 			// "Let current ancestor be node's parent."
6035 			currentAncestor = node.parentNode;
6036 
6037 			// "Let ancestor list be the empty list."
6038 			ancestorList = [];
6039 
6040 			// "While current ancestor is an editable Element that is neither an
6041 			// indentation element nor an ol nor a ul, append current ancestor to
6042 			// ancestor list and then set current ancestor to its parent."
6043 			while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) {
6044 				ancestorList.push(currentAncestor);
6045 				currentAncestor = currentAncestor.parentNode;
6046 			}
6047 		}
6048 
6049 		// "If node is an ol or ul and current ancestor is not an editable
6050 		// indentation element:"
6051 		if (isHtmlElementInArray(node, ["OL", "UL"]) && (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor))) {
6052 			// "Unset the reversed, start, and type attributes of node, if any are
6053 			// set."
6054 			node.removeAttribute("reversed");
6055 			node.removeAttribute("start");
6056 			node.removeAttribute("type");
6057 
6058 			// "Let children be the children of node."
6059 			var children = [].slice.call(toArray(node.childNodes));
6060 
6061 			// "If node has attributes, and its parent is not an ol or ul, set the
6062 			// tag name of node to "div"."
6063 			if (node.attributes.length && !isHtmlElementInArray(node.parentNode, ["OL", "UL"])) {
6064 				setTagName(node, "div", range);
6065 
6066 				// "Otherwise:"
6067 			} else {
6068 				// "Record the values of node's children, and let values be the
6069 				// result."
6070 				var values = recordValues([].slice.call(toArray(node.childNodes)));
6071 
6072 				// "Remove node, preserving its descendants."
6073 				removePreservingDescendants(node, range);
6074 
6075 				// "Restore the values from values."
6076 				restoreValues(values, range);
6077 			}
6078 
6079 			// "Fix disallowed ancestors of each member of children."
6080 			var i;
6081 			for (i = 0; i < children.length; i++) {
6082 				fixDisallowedAncestors(children[i], range);
6083 			}
6084 
6085 			// "Abort these steps."
6086 			return;
6087 		}
6088 
6089 		// "If current ancestor is not an editable indentation element, abort these
6090 		// steps."
6091 		if (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor)) {
6092 			return;
6093 		}
6094 
6095 		// "Append current ancestor to ancestor list."
6096 		ancestorList.push(currentAncestor);
6097 
6098 		// "Let original ancestor be current ancestor."
6099 		var originalAncestor = currentAncestor;
6100 
6101 		// "While ancestor list is not empty:"
6102 		while (ancestorList.length) {
6103 			// "Let current ancestor be the last member of ancestor list."
6104 			//
6105 			// "Remove the last member of ancestor list."
6106 			currentAncestor = ancestorList.pop();
6107 
6108 			// "Let target be the child of current ancestor that is equal to either
6109 			// node or the last member of ancestor list."
6110 			var target = node.parentNode == currentAncestor ? node : ancestorList[ancestorList.length - 1];
6111 
6112 			// "If target is an inline node that is not a br, and its nextSibling
6113 			// is a br, remove target's nextSibling from its parent."
6114 			if (isInlineNode(target) && !isNamedHtmlElement(target, 'BR') && isNamedHtmlElement(target.nextSibling, "BR")) {
6115 				target.parentNode.removeChild(target.nextSibling);
6116 			}
6117 
6118 			// "Let preceding siblings be the preceding siblings of target, and let
6119 			// following siblings be the following siblings of target."
6120 			var precedingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 0, Dom.getIndexInParent(target));
6121 			var followingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 1 + Dom.getIndexInParent(target));
6122 
6123 			// "Indent preceding siblings."
6124 			indentNodes(precedingSiblings, range);
6125 
6126 			// "Indent following siblings."
6127 			indentNodes(followingSiblings, range);
6128 		}
6129 
6130 		// "Outdent original ancestor."
6131 		outdentNode(originalAncestor, range);
6132 	}
6133 
6134 
6135 	//@}
6136 	///// Toggling lists /////
6137 	//@{
6138 
6139 	function toggleLists(tagName, range) {
6140 		// "Let mode be "disable" if the selection's list state is tag name, and
6141 		// "enable" otherwise."
6142 		var mode = getSelectionListState() == tagName ? "disable" : "enable";
6143 
6144 		tagName = tagName.toUpperCase();
6145 
6146 		// "Let other tag name be "ol" if tag name is "ul", and "ul" if tag name is
6147 		// "ol"."
6148 		var otherTagName = tagName == "OL" ? "UL" : "OL";
6149 
6150 		// "Let items be a list of all lis that are ancestor containers of the
6151 		// range's start and/or end node."
6152 		//
6153 		// It's annoying to get this in tree order using functional stuff without
6154 		// doing getDescendants(document), which is slow, so I do it imperatively.
6155 		var items = [];
6156 		(function () {
6157 			var ancestorContainer;
6158 			for (ancestorContainer = range.endContainer;
6159 				     ancestorContainer != range.commonAncestorContainer;
6160 				     ancestorContainer = ancestorContainer.parentNode) {
6161 				if (isNamedHtmlElement(ancestorContainer, "li")) {
6162 					items.unshift(ancestorContainer);
6163 				}
6164 			}
6165 			for (ancestorContainer = range.startContainer;
6166 				     ancestorContainer;
6167 				     ancestorContainer = ancestorContainer.parentNode) {
6168 				if (isNamedHtmlElement(ancestorContainer, "li")) {
6169 					items.unshift(ancestorContainer);
6170 				}
6171 			}
6172 		}());
6173 
6174 		// "For each item in items, normalize sublists of item."
6175 		$_(items).forEach(function (thisArg) {
6176 			normalizeSublists(thisArg, range);
6177 		});
6178 
6179 		// "Block-extend the range, and let new range be the result."
6180 		var newRange = blockExtend(range);
6181 
6182 		// "If mode is "enable", then let lists to convert consist of every
6183 		// editable HTML element with local name other tag name that is contained
6184 		// in new range, and for every list in lists to convert:"
6185 		if (mode == "enable") {
6186 			$_(getAllContainedNodes(newRange, function (node) {
6187 				return isEditable(node) && isHtmlElement_obsolete(node, otherTagName);
6188 			})).forEach(function (list) {
6189 				// "If list's previousSibling or nextSibling is an editable HTML
6190 				// element with local name tag name:"
6191 				if ((isEditable(list.previousSibling) && isHtmlElement_obsolete(list.previousSibling, tagName)) || (isEditable(list.nextSibling) && isHtmlElement_obsolete(list.nextSibling, tagName))) {
6192 					// "Let children be list's children."
6193 					var children = [].slice.call(toArray(list.childNodes));
6194 
6195 					// "Record the values of children, and let values be the
6196 					// result."
6197 					var values = recordValues(children);
6198 
6199 					// "Split the parent of children."
6200 					splitParent(children, range);
6201 
6202 					// "Wrap children, with sibling criteria returning true for an
6203 					// HTML element with local name tag name and false otherwise."
6204 					wrap(
6205 						children,
6206 						function (node) {
6207 							return isHtmlElement_obsolete(node, tagName);
6208 						},
6209 						function () {
6210 							return null;
6211 						},
6212 						range
6213 					);
6214 
6215 					// "Restore the values from values."
6216 					restoreValues(values, range);
6217 
6218 					// "Otherwise, set the tag name of list to tag name."
6219 				} else {
6220 					setTagName(list, tagName, range);
6221 				}
6222 			});
6223 		}
6224 
6225 		// "Let node list be a list of nodes, initially empty."
6226 		//
6227 		// "For each node node contained in new range, if node is editable; the
6228 		// last member of node list (if any) is not an ancestor of node; node
6229 		// is not an indentation element; and either node is an ol or ul, or its
6230 		// parent is an ol or ul, or it is an allowed child of "li"; then append
6231 		// node to node list."
6232 		var nodeList = getContainedNodes(newRange, function (node) {
6233 			return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["OL", "UL"]) || isHtmlElementInArray(node.parentNode, ["OL", "UL"]) || isAllowedChild(node, "li"));
6234 		});
6235 
6236 		// "If mode is "enable", remove from node list any ol or ul whose parent is
6237 		// not also an ol or ul."
6238 		if (mode == "enable") {
6239 			nodeList = $_(nodeList).filter(function (node) {
6240 				return !isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]);
6241 			});
6242 		}
6243 
6244 		// "If mode is "disable", then while node list is not empty:"
6245 		var sublist, values;
6246 
6247 		function createLi() {
6248 			return document.createElement("li");
6249 		}
6250 
6251 		function isOlUl(node) {
6252 			return isHtmlElementInArray(node, ["ol", "ul"]);
6253 		}
6254 
6255 		function makeIsElementPred(tagName) {
6256 			return function (node) {
6257 				return isHtmlElement_obsolete(node, tagName);
6258 			};
6259 		}
6260 
6261 		function makeCreateElement(tagName) {
6262 			return function () {
6263 				return document.createElement(tagName);
6264 			};
6265 		}
6266 
6267 		function makeCreateElementSublist(tagName, sublist, range) {
6268 			return function () {
6269 				// "If sublist's first member's parent is not an editable
6270 				// simple indentation element, or sublist's first member's
6271 				// parent's previousSibling is not an editable HTML element
6272 				// with local name tag name, call createElement(tag name)
6273 				// on the context object and return the result."
6274 				if (!isEditable(sublist[0].parentNode) || !isSimpleIndentationElement(sublist[0].parentNode) || !isEditable(sublist[0].parentNode.previousSibling) || !isHtmlElement_obsolete(sublist[0].parentNode.previousSibling, tagName)) {
6275 					return document.createElement(tagName);
6276 				}
6277 
6278 				// "Let list be sublist's first member's parent's
6279 				// previousSibling."
6280 				var list = sublist[0].parentNode.previousSibling;
6281 
6282 				// "Normalize sublists of list's lastChild."
6283 				normalizeSublists(list.lastChild, range);
6284 
6285 				// "If list's lastChild is not an editable HTML element
6286 				// with local name tag name, call createElement(tag name)
6287 				// on the context object, and append the result as the last
6288 				// child of list."
6289 				if (!isEditable(list.lastChild) || !isHtmlElement_obsolete(list.lastChild, tagName)) {
6290 					list.appendChild(document.createElement(tagName));
6291 				}
6292 
6293 				// "Return the last child of list."
6294 				return list.lastChild;
6295 			};
6296 		}
6297 
6298 		if (mode == "disable") {
6299 			while (nodeList.length) {
6300 				// "Let sublist be an empty list of nodes."
6301 				sublist = [];
6302 
6303 				// "Remove the first member from node list and append it to
6304 				// sublist."
6305 				sublist.push(nodeList.shift());
6306 
6307 				// "If the first member of sublist is an HTML element with local
6308 				// name tag name, outdent it and continue this loop from the
6309 				// beginning."
6310 				if (isHtmlElement_obsolete(sublist[0], tagName)) {
6311 					outdentNode(sublist[0], range);
6312 					continue;
6313 				}
6314 
6315 				// "While node list is not empty, and the first member of node list
6316 				// is the nextSibling of the last member of sublist and is not an
6317 				// HTML element with local name tag name, remove the first member
6318 				// from node list and append it to sublist."
6319 				while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElement_obsolete(nodeList[0], tagName)) {
6320 					sublist.push(nodeList.shift());
6321 				}
6322 
6323 6324 				// "Record the values of sublist, and let values be the result."
6325 				values = recordValues(sublist);
6326 
6327 				// "Split the parent of sublist."
6328 				splitParent(sublist, range);
6329 
6330 				// "Fix disallowed ancestors of each member of sublist."
6331 				var i;
6332 				for (i = 0; i < sublist.length; i++) {
6333 					fixDisallowedAncestors(sublist[i], range);
6334 				}
6335 
6336 				// "Restore the values from values."
6337 				restoreValues(values, range);
6338 			}
6339 
6340 			// "Otherwise, while node list is not empty:"
6341 		} else {
6342 			while (nodeList.length) {
6343 				// "Let sublist be an empty list of nodes."
6344 				sublist = [];
6345 
6346 				// "While either sublist is empty, or node list is not empty and
6347 				// its first member is the nextSibling of sublist's last member:"
6348 				while (!sublist.length || (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling)) {
6349 					// "If node list's first member is a p or div, set the tag name
6350 					// of node list's first member to "li", and append the result
6351 					// to sublist. Remove the first member from node list."
6352 					if (isHtmlElementInArray(nodeList[0], ["p", "div"])) {
6353 						sublist.push(setTagName(nodeList[0], "li", range));
6354 						nodeList.shift();
6355 
6356 						// "Otherwise, if the first member of node list is an li or ol
6357 						// or ul, remove it from node list and append it to sublist."
6358 					} else if (isHtmlElementInArray(nodeList[0], ["li", "ol", "ul"])) {
6359 						sublist.push(nodeList.shift());
6360 
6361 						// "Otherwise:"
6362 					} else {
6363 						// "Let nodes to wrap be a list of nodes, initially empty."
6364 						var nodesToWrap = [];
6365 
6366 						// "While nodes to wrap is empty, or node list is not empty
6367 						// and its first member is the nextSibling of nodes to
6368 						// wrap's last member and the first member of node list is
6369 						// an inline node and the last member of nodes to wrap is
6370 						// an inline node other than a br, remove the first member
6371 						// from node list and append it to nodes to wrap."
6372 						while (!nodesToWrap.length || (nodeList.length && nodeList[0] == nodesToWrap[nodesToWrap.length - 1].nextSibling && isInlineNode(nodeList[0]) && isInlineNode(nodesToWrap[nodesToWrap.length - 1]) && !isNamedHtmlElement(nodesToWrap[nodesToWrap.length - 1], "br"))) {
6373 							nodesToWrap.push(nodeList.shift());
6374 6375 						}
6376 
6377 						// "Wrap nodes to wrap, with new parent instructions
6378 						// returning the result of calling createElement("li") on
6379 						// the context object. Append the result to sublist."
6380 						sublist.push(wrap(
6381 							nodesToWrap,
6382 							undefined,
6383 							createLi,
6384 							range
6385 						));
6386 					}
6387 				}
6388 
6389 				// "If sublist's first member's parent is an HTML element with
6390 				// local name tag name, or if every member of sublist is an ol or
6391 				// ul, continue this loop from the beginning."
6392 				if (isHtmlElement_obsolete(sublist[0].parentNode, tagName) || $_(sublist).every(isOlUl)) {
6393 					continue;
6394 				}
6395 
6396 				// "If sublist's first member's parent is an HTML element with
6397 				// local name other tag name:"
6398 				if (isHtmlElement_obsolete(sublist[0].parentNode, otherTagName)) {
6399 					// "Record the values of sublist, and let values be the
6400 					// result."
6401 					values = recordValues(sublist);
6402 
6403 					// "Split the parent of sublist."
6404 					splitParent(sublist, range);
6405 
6406 					// "Wrap sublist, with sibling criteria returning true for an
6407 					// HTML element with local name tag name and false otherwise,
6408 					// and new parent instructions returning the result of calling
6409 					// createElement(tag name) on the context object."
6410 					wrap(
6411 						sublist,
6412 						makeIsElementPred(tagName),
6413 						makeCreateElement(tagName),
6414 						range
6415 					);
6416 
6417 					// "Restore the values from values."
6418 					restoreValues(values, range);
6419 
6420 					// "Continue this loop from the beginning."
6421 					continue;
6422 				}
6423 
6424 				// "Wrap sublist, with sibling criteria returning true for an HTML
6425 				// element with local name tag name and false otherwise, and new
6426 				// parent instructions being the following:"
6427 				// . . .
6428 				// "Fix disallowed ancestors of the previous step's result."
6429 				fixDisallowedAncestors(wrap(
6430 					sublist,
6431 					makeIsElementPred(tagName),
6432 					makeCreateElementSublist(tagName, sublist, range),
6433 					range
6434 				), range);
6435 			}
6436 		}
6437 	}
6438 
6439 
6440 	//@}
6441 	///// Justifying the selection /////
6442 	//@{
6443 
6444 	function justifySelection(alignment, range) {
6445 
6446 		// "Block-extend the active range, and let new range be the result."
6447 		var newRange = blockExtend(range);
6448 
6449 		// "Let element list be a list of all editable Elements contained in new
6450 		// range that either has an attribute in the HTML namespace whose local
6451 		// name is "align", or has a style attribute that sets "text-align", or is
6452 		// a center."
6453 		var elementList = getAllContainedNodes(newRange, function (node) {
6454 			return node.nodeType == $_.Node.ELEMENT_NODE && isEditable(node)
6455 			// Ignoring namespaces here
6456 				&& (hasAttribute(node, "align") || node.style.textAlign != "" || isNamedHtmlElement(node, 'center'));
6457 		});
6458 
6459 		// "For each element in element list:"
6460 		var i;
6461 		for (i = 0; i < elementList.length; i++) {
6462 			var element = elementList[i];
6463 
6464 			// "If element has an attribute in the HTML namespace whose local name
6465 			// is "align", remove that attribute."
6466 			element.removeAttribute("align");
6467 
6468 			// "Unset the CSS property "text-align" on element, if it's set by a
6469 			// style attribute."
6470 			element.style.textAlign = "";
6471 			if (element.getAttribute("style") == "") {
6472 				element.removeAttribute("style");
6473 			}
6474 
6475 			// "If element is a div or span or center with no attributes, remove
6476 			// it, preserving its descendants."
6477 			if (isHtmlElementInArray(element, ["div", "span", "center"]) && !element.attributes.length) {
6478 				removePreservingDescendants(element, range);
6479 			}
6480 
6481 			// "If element is a center with one or more attributes, set the tag
6482 			// name of element to "div"."
6483 			if (isNamedHtmlElement(element, 'center') && element.attributes.length) {
6484 				setTagName(element, "div", range);
6485 			}
6486 		}
6487 
6488 		// "Block-extend the active range, and let new range be the result."
6489 		newRange = blockExtend(globalRange);
6490 
6491 		// "Let node list be a list of nodes, initially empty."
6492 		var nodeList = [];
6493 
6494 		// "For each node node contained in new range, append node to node list if
6495 		// the last member of node list (if any) is not an ancestor of node; node
6496 		// is editable; node is an allowed child of "div"; and node's alignment
6497 		// value is not alignment."
6498 		nodeList = getContainedNodes(newRange, function (node) {
6499 			return isEditable(node) && isAllowedChild(node, "div") && getAlignmentValue(node) != alignment;
6500 		});
6501 
6502 		function makeIsAlignedDiv(alignment) {
6503 			return function (node) {
6504 				return isNamedHtmlElement(node, 'div') && $_(node.attributes).every(function (attr) {
6505 					return (attr.name == "align" && attr.value.toLowerCase() == alignment) || (attr.name == "style" && getStyleLength(node) == 1 && node.style.textAlign == alignment);
6506 				});
6507 			};
6508 		}
6509 
6510 		function makeCreateAlignedDiv(alignment) {
6511 			return function () {
6512 				var newParent = document.createElement("div");
6513 				newParent.setAttribute("style", "text-align: " + alignment);
6514 				return newParent;
6515 			};
6516 		}
6517 
6518 		// "While node list is not empty:"
6519 		while (nodeList.length) {
6520 			// "Let sublist be a list of nodes, initially empty."
6521 			var sublist = [];
6522 
6523 			// "Remove the first member of node list and append it to sublist."
6524 			sublist.push(nodeList.shift());
6525 
6526 			// "While node list is not empty, and the first member of node list is
6527 			// the nextSibling of the last member of sublist, remove the first
6528 			// member of node list and append it to sublist."
6529 			while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) {
6530 				sublist.push(nodeList.shift());
6531 			}
6532 
6533 			// "Wrap sublist. Sibling criteria returns true for any div that has
6534 			// one or both of the following two attributes and no other attributes,
6535 			// and false otherwise:"
6536 			//
6537 			//   * "An align attribute whose value is an ASCII case-insensitive
6538 			//     match for alignment.
6539 			//   * "A style attribute which sets exactly one CSS property
6540 			//     (including unrecognized or invalid attributes), which is
6541 			//     "text-align", which is set to alignment.
6542 			//
6543 			// "New parent instructions are to call createElement("div") on the
6544 			// context object, then set its CSS property "text-align" to alignment
6545 			// and return the result."
6546 			wrap(
6547 				sublist,
6548 				makeIsAlignedDiv(alignment),
6549 				makeCreateAlignedDiv(alignment),
6550 				range
6551 			);
6552 		}
6553 	}
6554 
6555 	//@}
6556 	///// Move the given collapsed range over adjacent zero-width whitespace characters.
6557 	///// The range is
6558 	//@{
6559 	/**
6560 	 * Move the given collapsed range over adjacent zero-width whitespace characters.
6561 	 * If the range is not collapsed or is not contained in a text node, it is not modified
6562 	 * @param range range to modify
6563 	 * @param forward {Boolean} true to move forward, false to move backward
6564 	 */
6565 	function moveOverZWSP(range, forward) {
6566 		var offset;
6567 		if (!range.collapsed) {
6568 			return;
6569 		}
6570 
6571 		offset = range.startOffset;
6572 
6573 		if (forward) {
6574 			// check whether the range starts in a text node
6575 			if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) {
6576 				// move forward (i.e. increase offset) as long as we stay in the text node and have zwsp characters to the right
6577 				while (offset < range.startContainer.data.length && range.startContainer.data.charAt(offset) === '\u200b') {
6578 					offset++;
6579 				}
6580 			}
6581 		} else {
6582 			// check whether the range starts in a text node
6583 			if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) {
6584 				// move backward (i.e. decrease offset) as long as we stay in the text node and have zwsp characters to the left
6585 				while (offset > 0 && range.startContainer.data.charAt(offset - 1) === '\u200b') {
6586 					offset--;
6587 				}
6588 			}
6589 		}
6590 
6591 		// if the offset was changed, set it back to the collapsed range
6592 		if (offset !== range.startOffset) {
6593 			range.setStart(range.startContainer, offset);
6594 			range.setEnd(range.startContainer, offset);
6595 		}
6596 	}
6597 
6598 	/**
6599 	 * implementation of the delete command
6600 	 * will attempt to delete contents within range if non-collapsed
6601 	 * or delete the character left of the cursor position if range
6602 	 * is collapsed. Is used to define the behaviour of the backspace
6603 	 * button.
6604 	 *
6605 	 * @param      value   is just there for compatibility with the commands api. parameter is ignored.
6606 	 * @param      range   the range to execute the delete command for
6607 	 * @return     void
6608 	 */
6609 	commands["delete"] = {
6610 		action: function (value, range) {
6611 			var i;
6612 
6613 			// special behaviour for skipping zero-width whitespaces in IE7
6614 			if (jQuery.browser.msie && jQuery.browser.version <= 7) {
6615 				moveOverZWSP(range, false);
6616 			}
6617 
6618 			// "If the active range is not collapsed, delete the contents of the
6619 			// active range and abort these steps."
6620 			if (!range.collapsed) {
6621 				deleteContents(range);
6622 				return;
6623 			}
6624 
6625 			// "Canonicalize whitespace at (active range's start node, active
6626 			// range's start offset)."
6627 			canonicalizeWhitespace(range.startContainer, range.startOffset);
6628 
6629 			// "Let node and offset be the active range's start node and offset."
6630 			var node = range.startContainer;
6631 			var offset = range.startOffset;
6632 			var isBr = false;
6633 			var isHr = false;
6634 
6635 			// "Repeat the following steps:"
6636 			while (true) {
6637 				// we need to reset isBr and isHr on every interation of the loop
6638 				if (offset > 0) {
6639 					isBr = isNamedHtmlElement(node.childNodes[offset - 1], "br") || false;
6640 					isHr = isNamedHtmlElement(node.childNodes[offset - 1], "hr") || false;
6641 				}
6642 				// "If offset is zero and node's previousSibling is an editable
6643 				// invisible node, remove node's previousSibling from its parent."
6644 				if (offset == 0 && isEditable(node.previousSibling) && isInvisible(node.previousSibling)) {
6645 					node.parentNode.removeChild(node.previousSibling);
6646 					continue;
6647 				}
6648 				// "Otherwise, if node has a child with index offset − 1 and that
6649 				// child is an editable invisible node, remove that child from
6650 				// node, then subtract one from offset."
6651 				if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && (isInvisible(node.childNodes[offset - 1]) || isBr || isHr)) {
6652 					node.removeChild(node.childNodes[offset - 1]);
6653 					offset--;
6654 					if (isBr || isHr) {
6655 						range.setStart(node, offset);
6656 						range.setEnd(node, offset);
6657 						return;
6658 					}
6659 					continue;
6660 
6661 				}
6662 				// "Otherwise, if offset is zero and node is an inline node, or if
6663 				// node is an invisible node, set offset to the index of node, then
6664 				// set node to its parent."
6665 				if ((offset == 0 && isInlineNode(node)) || isInvisible(node)) {
6666 					offset = Dom.getIndexInParent(node);
6667 					node = node.parentNode;
6668 					continue;
6669 				}
6670 				// "Otherwise, if node has a child with index offset − 1 and that
6671 				// child is an editable a, remove that child from node, preserving
6672 				// its descendants. Then abort these steps."
6673 				if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && isNamedHtmlElement(node.childNodes[offset - 1], "a")) {
6674 					removePreservingDescendants(node.childNodes[offset - 1], range);
6675 					return;
6676 
6677 				}
6678 				// "Otherwise, if node has a child with index offset − 1 and that
6679 				// child is not a block node or a br or an img, set node to that
6680 				// child, then set offset to the length of node."
6681 				if (0 <= offset - 1 && offset - 1 < node.childNodes.length && !isBlockNode(node.childNodes[offset - 1]) && !isHtmlElementInArray(node.childNodes[offset - 1], ["br", "img"])) {
6682 					node = node.childNodes[offset - 1];
6683 					offset = getNodeLength(node);
6684 					continue;
6685 				}
6686 				// "Otherwise, break from this loop."
6687 				// brk is a quick and dirty jslint workaround since I don't want to rewrite this loop
6688 				var brk = true;
6689 				if (brk) {
6690 					break;
6691 				}
6692 			}
6693 
6694 			// if the previous node is an aloha-table we want to delete it
6695 			var delBlock = getBlockAtPreviousPosition(node, offset);
6696 			if (delBlock) {
6697 				delBlock.parentNode.removeChild(delBlock);
6698 				return;
6699 			}
6700 
6701 			// "If node is a Text node and offset is not zero, call collapse(node,
6702 			// offset) on the Selection. Then delete the contents of the range with
6703 			// start (node, offset − 1) and end (node, offset) and abort these
6704 			// steps."
6705 			if (node.nodeType == $_.Node.TEXT_NODE && offset != 0) {
6706 				range.setStart(node, offset - 1);
6707 				range.setEnd(node, offset - 1);
6708 				deleteContents(node, offset - 1, node, offset);
6709 				return;
6710 			}
6711 
6712 			// @iebug
6713 			// when inserting a special char via the plugin
6714 			// there where problems deleting them again with backspace after insertation
6715 			// see https://github.com/alohaeditor/Aloha-Editor/issues/517
6716 			if (node.nodeType == $_.Node.TEXT_NODE && offset == 0 && jQuery.browser.msie) {
6717 				offset = 1;
6718 				range.setStart(node, offset);
6719 				range.setEnd(node, offset);
6720 				range.startOffset = 0;
6721 				deleteContents(range);
6722 				return;
6723 			}
6724 
6725 			// "If node is an inline node, abort these steps."
6726 			if (isInlineNode(node)) {
6727 				return;
6728 			}
6729 
6730 			// "If node has a child with index offset − 1 and that child is a br or
6731 			// hr or img, call collapse(node, offset) on the Selection. Then delete
6732 			// the contents of the range with start (node, offset − 1) and end
6733 			// (node, offset) and abort these steps."
6734 			if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset - 1], ["br", "hr", "img"])) {
6735 				range.setStart(node, offset);
6736 				range.setEnd(node, offset);
6737 				deleteContents(range);
6738 				return;
6739 			}
6740 
6741 			// "If node is an li or dt or dd and is the first child of its parent,
6742 			// and offset is zero:"
6743 			if (isHtmlElementInArray(node, ["li", "dt", "dd"]) && node == node.parentNode.firstChild && offset == 0) {
6744 				// "Let items be a list of all lis that are ancestors of node."
6745 				//
6746 				// Remember, must be in tree order.
6747 				var items = [];
6748 				var ancestor;
6749 				for (ancestor = node.parentNode; ancestor; ancestor = ancestor.parentNode) {
6750 					if (isNamedHtmlElement(ancestor, 'li')) {
6751 						items.unshift(ancestor);
6752 					}
6753 				}
6754 
6755 				// "Normalize sublists of each item in items."
6756 				for (i = 0; i < items.length; i++) {
6757 					normalizeSublists(items[i], range);
6758 				}
6759 
6760 				// "Record the values of the one-node list consisting of node, and
6761 				// let values be the result."
6762 				var values = recordValues([node]);
6763 
6764 				// "Split the parent of the one-node list consisting of node."
6765 				splitParent([node], range);
6766 
6767 				// "Restore the values from values."
6768 				restoreValues(values, range);
6769 
6770 				// "If node is a dd or dt, and it is not an allowed child of any of
6771 				// its ancestors in the same editing host, set the tag name of node
6772 				// to the default single-line container name and let node be the
6773 				// result."
6774 				if (isHtmlElementInArray(node, ["dd", "dt"]) && $_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); })) {
6775 					node = setTagName(node, defaultSingleLineContainerName, range);
6776 				}
6777 
6778 				// "Fix disallowed ancestors of node."
6779 				fixDisallowedAncestors(node, range);
6780 
6781 				// fix the lists to be html5 conformant
6782 				for (i = 0; i < items.length; i++) {
6783 					unNormalizeSublists(items[i].parentNode, range);
6784 				}
6785 
6786 				// "Abort these steps."
6787 				return;
6788 			}
6789 
6790 			// "Let start node equal node and let start offset equal offset."
6791 			var startNode = node;
6792 			var startOffset = offset;
6793 
6794 			// "Repeat the following steps:"
6795 			while (true) {
6796 				// "If start offset is zero, set start offset to the index of start
6797 				// node and then set start node to its parent."
6798 				if (startOffset == 0) {
6799 					startOffset = Dom.getIndexInParent(startNode);
6800 					startNode = startNode.parentNode;
6801 
6802 					// "Otherwise, if start node has an editable invisible child with
6803 					// index start offset minus one, remove it from start node and
6804 					// subtract one from start offset."
6805 				} else if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) {
6806 					startNode.removeChild(startNode.childNodes[startOffset - 1]);
6807 					startOffset--;
6808 
6809 					// "Otherwise, break from this loop."
6810 				} else {
6811 					break;
6812 				}
6813 			}
6814 
6815 			// "If offset is zero, and node has an editable ancestor container in
6816 			// the same editing host that's an indentation element:"
6817 			if (offset == 0 && $_(getAncestors(node).concat(node)).filter(function (ancestor) { return isEditable(ancestor) && inSameEditingHost(ancestor, node) && isIndentationElement(ancestor); }).length) {
6818 				// "Block-extend the range whose start and end are both (node, 0),
6819 				// and let new range be the result."
6820 				var newRange = Aloha.createRange();
6821 				newRange.setStart(node, 0);
6822 				newRange.setEnd(node, 0);
6823 				newRange = blockExtend(newRange);
6824 
6825 				// "Let node list be a list of nodes, initially empty."
6826 				//
6827 				// "For each node current node contained in new range, append
6828 				// current node to node list if the last member of node list (if
6829 				// any) is not an ancestor of current node, and current node is
6830 				// editable but has no editable descendants."
6831 				var nodeList = getContainedNodes(newRange, function (currentNode) {
6832 					return isEditable(currentNode) && !hasEditableDescendants(currentNode);
6833 				});
6834 
6835 				// "Outdent each node in node list."
6836 				for (i = 0; i < nodeList.length; i++) {
6837 					outdentNode(nodeList[i], range);
6838 				}
6839 
6840 				// "Abort these steps."
6841 				return;
6842 			}
6843 
6844 			// "If the child of start node with index start offset is a table,
6845 			// abort these steps."
6846 			if (isNamedHtmlElement(startNode.childNodes[startOffset], "table")) {
6847 				return;
6848 			}
6849 
6850 			// "If start node has a child with index start offset − 1, and that
6851 			// child is a table:"
6852 			if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isNamedHtmlElement(startNode.childNodes[startOffset - 1], "table")) {
6853 				// "Call collapse(start node, start offset − 1) on the context
6854 				// object's Selection."
6855 				range.setStart(startNode, startOffset - 1);
6856 
6857 				// "Call extend(start node, start offset) on the context object's
6858 				// Selection."
6859 				range.setEnd(startNode, startOffset);
6860 
6861 				// "Abort these steps."
6862 				return;
6863 			}
6864 
6865 			// "If offset is zero; and either the child of start node with index
6866 			// start offset minus one is an hr, or the child is a br whose
6867 			// previousSibling is either a br or not an inline node:"
6868 			if (offset == 0
6869 				    && (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "hr")
6870 						|| (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "br")
6871 							&& (isNamedHtmlElement(startNode.childNodes[startOffset - 1].previousSibling, "br")
6872 								|| !isInlineNode(startNode.childNodes[startOffset - 1].previousSibling))))) {
6873 				// "Call collapse(node, offset) on the Selection."
6874 				range.setStart(node, offset);
6875 				range.setEnd(node, offset);
6876 
6877 				// "Delete the contents of the range with start (start node, start
6878 				// offset − 1) and end (start node, start offset)."
6879 				deleteContents(startNode, startOffset - 1, startNode, startOffset);
6880 
6881 				// "Abort these steps."
6882 				return;
6883 			}
6884 
6885 			// "If the child of start node with index start offset is an li or dt
6886 			// or dd, and that child's firstChild is an inline node, and start
6887 			// offset is not zero:"
6888 			if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isInlineNode(startNode.childNodes[startOffset].firstChild) && startOffset != 0) {
6889 				// "Let previous item be the child of start node with index start
6890 				// offset minus one."
6891 				var previousItem = startNode.childNodes[startOffset - 1];
6892 
6893 				// "If previous item's lastChild is an inline node other than a br,
6894 				// call createElement("br") on the context object and append the
6895 				// result as the last child of previous item."
6896 				if (isInlineNode(previousItem.lastChild) && !isNamedHtmlElement(previousItem.lastChild, "br")) {
6897 					previousItem.appendChild(document.createElement("br"));
6898 				}
6899 
6900 				// "If previous item's lastChild is an inline node, call
6901 				// createElement("br") on the context object and append the result
6902 				// as the last child of previous item."
6903 				if (isInlineNode(previousItem.lastChild)) {
6904 					previousItem.appendChild(document.createElement("br"));
6905 				}
6906 			}
6907 
6908 			// "If the child of start node with index start offset is an li or dt
6909 			// or dd, and its previousSibling is also an li or dt or dd, set start
6910 			// node to its child with index start offset − 1, then set start offset
6911 			// to start node's length, then set node to start node's nextSibling,
6912 			// then set offset to 0."
6913 			if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isHtmlElementInArray(startNode.childNodes[startOffset - 1], ["li", "dt", "dd"])) {
6914 				startNode = startNode.childNodes[startOffset - 1];
6915 				startOffset = getNodeLength(startNode);
6916 				node = startNode.nextSibling;
6917 				offset = 0;
6918 
6919 				// "Otherwise, while start node has a child with index start offset
6920 				// minus one:"
6921 			} else {
6922 				while (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length) {
6923 					// "If start node's child with index start offset minus one is
6924 					// editable and invisible, remove it from start node, then
6925 					// subtract one from start offset."
6926 					if (isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) {
6927 						startNode.removeChild(startNode.childNodes[startOffset - 1]);
6928 						startOffset--;
6929 
6930 						// "Otherwise, set start node to its child with index start
6931 						// offset minus one, then set start offset to the length of
6932 						// start node."
6933 					} else {
6934 						startNode = startNode.childNodes[startOffset - 1];
6935 						startOffset = getNodeLength(startNode);
6936 					}
6937 				}
6938 			}
6939 
6940 			// "Delete the contents of the range with start (start node, start
6941 			// offset) and end (node, offset)."
6942 			var delRange = Aloha.createRange();
6943 			delRange.setStart(startNode, startOffset);
6944 			delRange.setEnd(node, offset);
6945 			deleteContents(delRange);
6946 
6947 			if (!isAncestorContainer(document.body, range.startContainer)) {
6948 				if (delRange.startContainer.hasChildNodes()
6949 						|| delRange.startContainer.nodeType == $_.Node.TEXT_NODE
6950 							|| isEditingHost(delRange.startContainer)) {
6951 					range.setStart(delRange.startContainer, delRange.startOffset);
6952 					range.setEnd(delRange.startContainer, delRange.startOffset);
6953 				} else {
6954 					range.setStart(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer));
6955 					range.setEnd(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer));
6956 				}
6957 			}
6958 		}
6959 	};
6960 
6961 	//@}
6962 	///// The formatBlock command /////
6963 	//@{
6964 	// "A formattable block name is "address", "dd", "div", "dt", "h1", "h2", "h3",
6965 	// "h4", "h5", "h6", "p", or "pre"."
6966 	var formattableBlockNames = ["address", "dd", "div", "dt", "h1", "h2", "h3", "h4", "h5", "h6", "p", "pre"];
6967 
6968 	commands.formatblock = {
6969 		action: function (value) {
6970 			var i;
6971 
6972 			// "If value begins with a "<" character and ends with a ">" character,
6973 			// remove the first and last characters from it."
6974 			if (/^<.*>$/.test(value)) {
6975 				value = value.slice(1, -1);
6976 			}
6977 
6978 			// "Let value be converted to ASCII lowercase."
6979 			value = value.toLowerCase();
6980 
6981 			// "If value is not a formattable block name, abort these steps and do
6982 			// nothing."
6983 			if ($_(formattableBlockNames).indexOf(value) == -1) {
6984 				return;
6985 			}
6986 
6987 			// "Block-extend the active range, and let new range be the result."
6988 			var newRange = blockExtend(getActiveRange());
6989 
6990 6991 			// "Let node list be an empty list of nodes."
6992 			//
6993 			// "For each node node contained in new range, append node to node list
6994 			// if it is editable, the last member of original node list (if any) is
6995 			// not an ancestor of node, node is either a non-list single-line
6996 			// container or an allowed child of "p" or a dd or dt, and node is not
6997 			// the ancestor of a prohibited paragraph child."
6998 			var nodeList = getContainedNodes(newRange, function (node) {
6999 				return isEditable(node) && (isNonListSingleLineContainer(node) || isAllowedChild(node, "p") || isHtmlElementInArray(node, ["dd", "dt"])) && !$_(getDescendants(node)).some(isProhibitedParagraphChild);
7000 			});
7001 
7002 			// "Record the values of node list, and let values be the result."
7003 			var values = recordValues(nodeList);
7004 
7005 			function makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node) {
7006 				return function (ancestor) {
7007 					return (isEditable(ancestor)
7008 							&& inSameEditingHost(ancestor, node)
7009 							&& isHtmlElement_obsolete(ancestor, formattableBlockNames)
7010 							&& !$_(getDescendants(ancestor)).some(isProhibitedParagraphChild));
7011 				};
7012 			}
7013 
7014 			function makeIsElementWithoutAttributes(value) {
7015 				return function (node) {
7016 					return isHtmlElement_obsolete(node, value) && !node.attributes.length;
7017 				};
7018 			}
7019 
7020 			function returnFalse() {
7021 				return false;
7022 			}
7023 
7024 			function makeCreateElement(value) {
7025 				return function () {
7026 					return document.createElement(value);
7027 				};
7028 			}
7029 
7030 			// "For each node in node list, while node is the descendant of an
7031 			// editable HTML element in the same editing host, whose local name is
7032 			// a formattable block name, and which is not the ancestor of a
7033 			// prohibited paragraph child, split the parent of the one-node list
7034 			// consisting of node."
7035 			for (i = 0; i < nodeList.length; i++) {
7036 				var node = nodeList[i];
7037 				while ($_(getAncestors(node)).some(makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node))) {
7038 					splitParent([node], newRange);
7039 				}
7040 			}
7041 
7042 			// "Restore the values from values."
7043 			restoreValues(values, newRange);
7044 
7045 			// "While node list is not empty:"
7046 			while (nodeList.length) {
7047 				var sublist;
7048 
7049 				// "If the first member of node list is a single-line
7050 				// container:"
7051 				if (isSingleLineContainer(nodeList[0])) {
7052 					// "Let sublist be the children of the first member of node
7053 					// list."
7054 					sublist = [].slice.call(toArray(nodeList[0].childNodes));
7055 
7056 					// "Record the values of sublist, and let values be the
7057 					// result."
7058 					values = recordValues(sublist);
7059 
7060 					// "Remove the first member of node list from its parent,
7061 					// preserving its descendants."
7062 					removePreservingDescendants(nodeList[0], newRange);
7063 
7064 					// "Restore the values from values."
7065 					restoreValues(values, newRange);
7066 
7067 					// "Remove the first member from node list."
7068 					nodeList.shift();
7069 
7070 					// "Otherwise:"
7071 				} else {
7072 					// "Let sublist be an empty list of nodes."
7073 					sublist = [];
7074 
7075 					// "Remove the first member of node list and append it to
7076 					// sublist."
7077 					sublist.push(nodeList.shift());
7078 
7079 					// "While node list is not empty, and the first member of
7080 					// node list is the nextSibling of the last member of
7081 					// sublist, and the first member of node list is not a
7082 					// single-line container, and the last member of sublist is
7083 					// not a br, remove the first member of node list and
7084 					// append it to sublist."
7085 					while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isSingleLineContainer(nodeList[0]) && !isNamedHtmlElement(sublist[sublist.length - 1], "BR")) {
7086 						sublist.push(nodeList.shift());
7087 					}
7088 				}
7089 
7090 				// "Wrap sublist. If value is "div" or "p", sibling criteria
7091 				// returns false; otherwise it returns true for an HTML element
7092 				// with local name value and no attributes, and false otherwise.
7093 				// New parent instructions return the result of running
7094 				// createElement(value) on the context object. Then fix disallowed
7095 				// ancestors of the result."
7096 				fixDisallowedAncestors(wrap(
7097 					sublist,
7098 					jQuery.inArray(value, ["div", "p"]) == -1 ? makeIsElementWithoutAttributes(value) : returnFalse,
7099 					makeCreateElement(value),
7100 					newRange
7101 				), newRange);
7102 			}
7103 		},
7104 		indeterm: function () {
7105 			// "Block-extend the active range, and let new range be the result."
7106 			var newRange = blockExtend(getActiveRange());
7107 
7108 			// "Let node list be all visible editable nodes that are contained in
7109 			// new range and have no children."
7110 			var nodeList = getAllContainedNodes(newRange, function (node) {
7111 				return isVisible(node) && isEditable(node) && !node.hasChildNodes();
7112 			});
7113 
7114 			// "If node list is empty, return false."
7115 			if (!nodeList.length) {
7116 				return false;
7117 			}
7118 
7119 			// "Let type be null."
7120 			var type = null;
7121 
7122 			// "For each node in node list:"
7123 			var i;
7124 			for (i = 0; i < nodeList.length; i++) {
7125 				var node = nodeList[i];
7126 
7127 				// "While node's parent is editable and in the same editing host as
7128 				// node, and node is not an HTML element whose local name is a
7129 				// formattable block name, set node to its parent."
7130 				while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) {
7131 					node = node.parentNode;
7132 				}
7133 
7134 				// "Let current type be the empty string."
7135 				var currentType = "";
7136 
7137 				// "If node is an editable HTML element whose local name is a
7138 				// formattable block name, and node is not the ancestor of a
7139 				// prohibited paragraph child, set current type to node's local
7140 				// name."
7141 				if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) {
7142 					currentType = node.tagName;
7143 				}
7144 
7145 				// "If type is null, set type to current type."
7146 				if (type === null) {
7147 					type = currentType;
7148 
7149 					// "Otherwise, if type does not equal current type, return true."
7150 				} else if (type != currentType) {
7151 					return true;
7152 				}
7153 			}
7154 
7155 			// "Return false."
7156 			return false;
7157 		},
7158 		value: function () {
7159 			// "Block-extend the active range, and let new range be the result."
7160 			var newRange = blockExtend(getActiveRange());
7161 
7162 			// "Let node be the first visible editable node that is contained in
7163 			// new range and has no children. If there is no such node, return the
7164 			// empty string."
7165 			var nodes = getAllContainedNodes(newRange, function (node) {
7166 				return isVisible(node) && isEditable(node) && !node.hasChildNodes();
7167 			});
7168 			if (!nodes.length) {
7169 				return "";
7170 			}
7171 			var node = nodes[0];
7172 
7173 			// "While node's parent is editable and in the same editing host as
7174 			// node, and node is not an HTML element whose local name is a
7175 			// formattable block name, set node to its parent."
7176 			while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) {
7177 				node = node.parentNode;
7178 			}
7179 
7180 			// "If node is an editable HTML element whose local name is a
7181 			// formattable block name, and node is not the ancestor of a prohibited
7182 			// paragraph child, return node's local name, converted to ASCII
7183 			// lowercase."
7184 			if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) {
7185 				return node.tagName.toLowerCase();
7186 			}
7187 
7188 			// "Return the empty string."
7189 			return "";
7190 		}
7191 	};
7192 
7193 	//@}
7194 	///// The forwardDelete command /////
7195 	//@{
7196 	commands.forwarddelete = {
7197 		action: function (value, range) {
7198 			// special behaviour for skipping zero-width whitespaces in IE7
7199 			if (jQuery.browser.msie && jQuery.browser.version <= 7) {
7200 				moveOverZWSP(range, true);
7201 			}
7202 
7203 			// "If the active range is not collapsed, delete the contents of the
7204 			// active range and abort these steps."
7205 			if (!range.collapsed) {
7206 				deleteContents(range);
7207 				return;
7208 			}
7209 
7210 			// "Canonicalize whitespace at (active range's start node, active
7211 			// range's start offset)."
7212 			canonicalizeWhitespace(range.startContainer, range.startOffset);
7213 
7214 			// "Let node and offset be the active range's start node and offset."
7215 			var node = range.startContainer;
7216 			var offset = range.startOffset;
7217 			var isBr = false;
7218 			var isHr = false;
7219 
7220 			// "Repeat the following steps:"
7221 			while (true) {
7222 				// check whether the next element is a br or hr
7223 				// Commented out for unknown reason.
7224 				//if (offset < node.childNodes.length) {
7225 				//				isBr = isHtmlElement_obsolete(node.childNodes[offset], "br") || false;
7226 				//				isHr = isHtmlElement_obsolete(node.childNodes[offset], "hr") || false;
7227 				//}
7228 
7229 				// "If offset is the length of node and node's nextSibling is an
7230 				// editable invisible node, remove node's nextSibling from its
7231 				// parent."
7232 				if (offset == getNodeLength(node) && isEditable(node.nextSibling) && isInvisible(node.nextSibling)) {
7233 					node.parentNode.removeChild(node.nextSibling);
7234 
7235 					// "Otherwise, if node has a child with index offset and that child
7236 					// is an editable invisible node, remove that child from node."
7237 				} else if (offset < node.childNodes.length && isEditable(node.childNodes[offset]) && (isInvisible(node.childNodes[offset]) || isBr || isHr)) {
7238 					node.removeChild(node.childNodes[offset]);
7239 					if (isBr || isHr) {
7240 						ensureContainerEditable(node);
7241 						range.setStart(node, offset);
7242 						range.setEnd(node, offset);
7243 						return;
7244 					}
7245 
7246 					// "Otherwise, if node has a child with index offset and that child
7247 					// is a collapsed block prop, add one to offset."
7248 				} else if (offset < node.childNodes.length && isCollapsedBlockProp(node.childNodes[offset])) {
7249 					offset++;
7250 
7251 					// "Otherwise, if offset is the length of node and node is an
7252 					// inline node, or if node is invisible, set offset to one plus the
7253 					// index of node, then set node to its parent."
7254 				} else if ((offset == getNodeLength(node) && isInlineNode(node)) || isInvisible(node)) {
7255 					offset = 1 + Dom.getIndexInParent(node);
7256 					node = node.parentNode;
7257 
7258 					// "Otherwise, if node has a child with index offset and that child
7259 					// is not a block node or a br or an img, set node to that child,
7260 					// then set offset to zero."
7261 				} else if (offset < node.childNodes.length && !isBlockNode(node.childNodes[offset]) && !isHtmlElementInArray(node.childNodes[offset], ["br", "img"])) {
7262 					node = node.childNodes[offset];
7263 					offset = 0;
7264 
7265 					// "Otherwise, break from this loop."
7266 				} else {
7267 					break;
7268 				}
7269 			}
7270 
7271 			// collapse whitespace in the node, if it is a text node
7272 			canonicalizeWhitespace(range.startContainer, range.startOffset);
7273 
7274 			// if the next node is an aloha-table we want to delete it
7275 			var delBlock = getBlockAtNextPosition(node, offset);
7276 			if (delBlock) {
7277 				delBlock.parentNode.removeChild(delBlock);
7278 				return;
7279 			}
7280 
7281 			var endOffset;
7282 			// "If node is a Text node and offset is not node's length:"
7283 			if (node.nodeType == $_.Node.TEXT_NODE && offset != getNodeLength(node)) {
7284 				// "Call collapse(node, offset) on the Selection."
7285 				range.setStart(node, offset);
7286 				range.setEnd(node, offset);
7287 
7288 				// "Let end offset be offset plus one."
7289 				endOffset = offset + 1;
7290 
7291 				// "While end offset is not node's length and the end offsetth
7292 				// element of node's data has general category M when interpreted
7293 				// as a Unicode code point, add one to end offset."
7294 				//
7295 				// TODO: Not even going to try handling anything beyond the most
7296 				// basic combining marks, since I couldn't find a good list.  I
7297 				// special-case a few Hebrew diacritics too to test basic coverage
7298 				// of non-Latin stuff.
7299 				while (endOffset != node.length && /^[\u0300-\u036f\u0591-\u05bd\u05c1\u05c2]$/.test(node.data[endOffset])) {
7300 					endOffset++;
7301 				}
7302 
7303 				// "Delete the contents of the range with start (node, offset) and
7304 				// end (node, end offset)."
7305 				deleteContents(node, offset, node, endOffset);
7306 
7307 				// "Abort these steps."
7308 				return;
7309 			}
7310 
7311 			// "If node is an inline node, abort these steps."
7312 			if (isInlineNode(node)) {
7313 				return;
7314 			}
7315 
7316 			// "If node has a child with index offset and that child is a br or hr
7317 			// or img, call collapse(node, offset) on the Selection. Then delete
7318 			// the contents of the range with start (node, offset) and end (node,
7319 			// offset + 1) and abort these steps."
7320 			if (offset < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset], ["br", "hr", "img"])) {
7321 				range.setStart(node, offset);
7322 				range.setEnd(node, offset);
7323 				deleteContents(node, offset, node, offset + 1);
7324 				return;
7325 			}
7326 
7327 			// "Let end node equal node and let end offset equal offset."
7328 			var endNode = node;
7329 			endOffset = offset;
7330 
7331 			// "Repeat the following steps:"
7332 			while (true) {
7333 				// "If end offset is the length of end node, set end offset to one
7334 				// plus the index of end node and then set end node to its parent."
7335 				if (endOffset == getNodeLength(endNode)) {
7336 					endOffset = 1 + Dom.getIndexInParent(endNode);
7337 					endNode = endNode.parentNode;
7338 
7339 					// "Otherwise, if end node has a an editable invisible child with
7340 					// index end offset, remove it from end node."
7341 				} else if (endOffset < endNode.childNodes.length && isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) {
7342 					endNode.removeChild(endNode.childNodes[endOffset]);
7343 
7344 					// "Otherwise, break from this loop."
7345 				} else {
7346 					break;
7347 				}
7348 			}
7349 
7350 			// "If the child of end node with index end offset minus one is a
7351 			// table, abort these steps."
7352 			if (isNamedHtmlElement(endNode.childNodes[endOffset - 1], "table")) {
7353 				return;
7354 			}
7355 
7356 			// "If the child of end node with index end offset is a table:"
7357 			if (isNamedHtmlElement(endNode.childNodes[endOffset], "table")) {
7358 				// "Call collapse(end node, end offset) on the context object's
7359 				// Selection."
7360 				range.setStart(endNode, endOffset);
7361 
7362 				// "Call extend(end node, end offset + 1) on the context object's
7363 				// Selection."
7364 				range.setEnd(endNode, endOffset + 1);
7365 
7366 				// "Abort these steps."
7367 				return;
7368 			}
7369 
7370 			// "If offset is the length of node, and the child of end node with
7371 			// index end offset is an hr or br:"
7372 			if (offset == getNodeLength(node) && isHtmlElementInArray(endNode.childNodes[endOffset], ["br", "hr"])) {
7373 				// "Call collapse(node, offset) on the Selection."
7374 				range.setStart(node, offset);
7375 				range.setEnd(node, offset);
7376 
7377 				// "Delete the contents of the range with end (end node, end
7378 				// offset) and end (end node, end offset + 1)."
7379 				deleteContents(endNode, endOffset, endNode, endOffset + 1);
7380 
7381 				// "Abort these steps."
7382 				return;
7383 			}
7384 
7385 			// "While end node has a child with index end offset:"
7386 			while (endOffset < endNode.childNodes.length) {
7387 				// "If end node's child with index end offset is editable and
7388 				// invisible, remove it from end node."
7389 				if (isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) {
7390 					endNode.removeChild(endNode.childNodes[endOffset]);
7391 
7392 					// "Otherwise, set end node to its child with index end offset and
7393 					// set end offset to zero."
7394 				} else {
7395 					endNode = endNode.childNodes[endOffset];
7396 					endOffset = 0;
7397 				}
7398 			}
7399 
7400 			// "Delete the contents of the range with start (node, offset) and end
7401 			// (end node, end offset)."
7402 			var newRange = deleteContents(node, offset, endNode, endOffset);
7403 			range.setStart(newRange.startContainer, newRange.startOffset);
7404 			range.setEnd(newRange.endContainer, newRange.endOffset);
7405 		}
7406 	};
7407 
7408 	//@}
7409 	///// The indent command /////
7410 	//@{
7411 	commands.indent = {
7412 		action: function () {
7413 			// "Let items be a list of all lis that are ancestor containers of the
7414 			// active range's start and/or end node."
7415 			//
7416 			// Has to be in tree order, remember!
7417 			var items = [];
7418 			var node;
7419 			for (node = getActiveRange().endContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) {
7420 				if (isNamedHtmlElement(node, "LI")) {
7421 					items.unshift(node);
7422 				}
7423 			}
7424 			for (node = getActiveRange().startContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) {
7425 				if (isNamedHtmlElement(node, "LI")) {
7426 					items.unshift(node);
7427 				}
7428 			}
7429 			for (node = getActiveRange().commonAncestorContainer; node; node = node.parentNode) {
7430 				if (isNamedHtmlElement(node, "LI")) {
7431 					items.unshift(node);
7432 				}
7433 			}
7434 
7435 			// "For each item in items, normalize sublists of item."
7436 			var i;
7437 			for (i = 0; i < items.length; i++) {
7438 				normalizeSublists(items[i], getActiveRange());
7439 			}
7440 
7441 			// "Block-extend the active range, and let new range be the result."
7442 			var newRange = blockExtend(getActiveRange());
7443 
7444 			// "Let node list be a list of nodes, initially empty."
7445 			var nodeList = [];
7446 
7447 			// "For each node node contained in new range, if node is editable and
7448 			// is an allowed child of "div" or "ol" and if the last member of node
7449 			// list (if any) is not an ancestor of node, append node to node list."
7450 			nodeList = getContainedNodes(newRange, function (node) {
7451 				return isEditable(node) && (isAllowedChild(node, "div") || isAllowedChild(node, "ol"));
7452 			});
7453 
7454 			// "If the first member of node list is an li whose parent is an ol or
7455 			// ul, and its previousSibling is an li as well, normalize sublists of
7456 			// its previousSibling."
7457 			if (nodeList.length && isNamedHtmlElement(nodeList[0], "LI") && isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]) && isNamedHtmlElement(nodeList[0].previousSibling, "LI")) {
7458 				normalizeSublists(nodeList[0].previousSibling, newRange);
7459 			}
7460 
7461 			// "While node list is not empty:"
7462 			while (nodeList.length) {
7463 				// "Let sublist be a list of nodes, initially empty."
7464 				var sublist = [];
7465 
7466 				// "Remove the first member of node list and append it to sublist."
7467 				sublist.push(nodeList.shift());
7468 
7469 				// "While the first member of node list is the nextSibling of the
7470 				// last member of sublist, remove the first member of node list and
7471 				// append it to sublist."
7472 7473 				while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) {
7474 					sublist.push(nodeList.shift());
7475 				}
7476 
7477 				// "Indent sublist."
7478 				indentNodes(sublist, newRange);
7479 			}
7480 		}
7481 	};
7482 
7483 	//@}
7484 	///// The insertHorizontalRule command /////
7485 	//@{
7486 	commands.inserthorizontalrule = {
7487 		action: function (value, range) {
7488 
7489 			// "While range's start offset is 0 and its start node's parent is not
7490 			// null, set range's start to (parent of start node, index of start
7491 			// node)."
7492 			while (range.startOffset == 0 && range.startContainer.parentNode) {
7493 				range.setStart(range.startContainer.parentNode, Dom.getIndexInParent(range.startContainer));
7494 			}
7495 
7496 			// "While range's end offset is the length of its end node, and its end
7497 			// node's parent is not null, set range's end to (parent of end node, 1
7498 			// + index of start node)."
7499 			while (range.endOffset == getNodeLength(range.endContainer) && range.endContainer.parentNode) {
7500 				range.setEnd(range.endContainer.parentNode, 1 + Dom.getIndexInParent(range.endContainer));
7501 			}
7502 
7503 			// "Delete the contents of range, with block merging false."
7504 			deleteContents(range, {
7505 				blockMerging: false
7506 			});
7507 
7508 			// "If the active range's start node is neither editable nor an editing
7509 			// host, abort these steps."
7510 			if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) {
7511 				return;
7512 			}
7513 
7514 			// "If the active range's start node is a Text node and its start
7515 			// offset is zero, set the active range's start and end to (parent of
7516 			// start node, index of start node)."
7517 			if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == 0) {
7518 				getActiveRange().setStart(getActiveRange().startContainer.parentNode, Dom.getIndexInParent(getActiveRange().startContainer));
7519 				getActiveRange().collapse(true);
7520 			}
7521 
7522 			// "If the active range's start node is a Text node and its start
7523 			// offset is the length of its start node, set the active range's start
7524 			// and end to (parent of start node, 1 + index of start node)."
7525 			if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == getNodeLength(getActiveRange().startContainer)) {
7526 				getActiveRange().setStart(getActiveRange().startContainer.parentNode, 1 + Dom.getIndexInParent(getActiveRange().startContainer));
7527 				getActiveRange().collapse(true);
7528 			}
7529 
7530 			// "Let hr be the result of calling createElement("hr") on the
7531 			// context object."
7532 			var hr = document.createElement("hr");
7533 
7534 			// "Run insertNode(hr) on the range."
7535 			range.insertNode(hr);
7536 
7537 			// "Fix disallowed ancestors of hr."
7538 			fixDisallowedAncestors(hr, range);
7539 
7540 			// "Run collapse() on the Selection, with first argument equal to the
7541 			// parent of hr and the second argument equal to one plus the index of
7542 			// hr."
7543 			//
7544 			// Not everyone actually supports collapse(), so we do it manually
7545 			// instead.  Also, we need to modify the actual range we're given as
7546 			// well, for the sake of autoimplementation.html's range-filling-in.
7547 			range.setStart(hr.parentNode, 1 + Dom.getIndexInParent(hr));
7548 			range.setEnd(hr.parentNode, 1 + Dom.getIndexInParent(hr));
7549 			Aloha.getSelection().removeAllRanges();
7550 			Aloha.getSelection().addRange(range);
7551 		}
7552 	};
7553 
7554 	//@}
7555 	///// The insertHTML command /////
7556 	//@{
7557 	commands.inserthtml = {
7558 		action: function (value, range) {
7559 
7560 
7561 			// "Delete the contents of the active range."
7562 			deleteContents(range);
7563 
7564 			// "If the active range's start node is neither editable nor an editing
7565 			// host, abort these steps."
7566 			if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) {
7567 				return;
7568 			}
7569 
7570 			// "Let frag be the result of calling createContextualFragment(value)
7571 			// on the active range."
7572 			var frag = range.createContextualFragment(value);
7573 
7574 			// "Let last child be the lastChild of frag."
7575 			var lastChild = frag.lastChild;
7576 
7577 			// "If last child is null, abort these steps."
7578 			if (!lastChild) {
7579 				return;
7580 			}
7581 
7582 			// "Let descendants be all descendants of frag."
7583 			var descendants = getDescendants(frag);
7584 
7585 			// "If the active range's start node is a block node:"
7586 			if (isBlockNode(range.startContainer)) {
7587 				// "Let collapsed block props be all editable collapsed block prop
7588 				// children of the active range's start node that have index
7589 				// greater than or equal to the active range's start offset."
7590 				//
7591 				// "For each node in collapsed block props, remove node from its
7592 				// parent."
7593 				$_(range.startContainer.childNodes).filter(function (node, range) {
7594 					return isEditable(node) && isCollapsedBlockProp(node) && Dom.getIndexInParent(node) >= range.startOffset;
7595 				}, true).forEach(function (node) {
7596 					node.parentNode.removeChild(node);
7597 				});
7598 			}
7599 
7600 			// "Call insertNode(frag) on the active range."
7601 			range.insertNode(frag);
7602 
7603 			// "If the active range's start node is a block node with no visible
7604 			// children, call createElement("br") on the context object and append
7605 			// the result as the last child of the active range's start node."
7606 			if (isBlockNode(range.startContainer)) {
7607 				ensureContainerEditable(range.startContainer);
7608 			}
7609 
7610 			// "Call collapse() on the context object's Selection, with last
7611 			// child's parent as the first argument and one plus its index as the
7612 			// second."
7613 			range.setStart(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild));
7614 			range.setEnd(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild));
7615 
7616 			// "Fix disallowed ancestors of each member of descendants."
7617 			var i;
7618 			for (i = 0; i < descendants.length; i++) {
7619 				fixDisallowedAncestors(descendants[i], range);
7620 			}
7621 
7622 			setActiveRange(range);
7623 		}
7624 	};
7625 
7626 	//@}
7627 	///// The insertImage command /////
7628 	//@{
7629 	commands.insertimage = {
7630 		action: function (value) {
7631 			// "If value is the empty string, abort these steps and do nothing."
7632 			if (value === "") {
7633 				return;
7634 			}
7635 
7636 			// "Let range be the active range."
7637 			var range = getActiveRange();
7638 
7639 			// "Delete the contents of range, with strip wrappers false."
7640 			deleteContents(range, {
7641 				stripWrappers: false
7642 			});
7643 
7644 			// "If the active range's start node is neither editable nor an editing
7645 7646 			// host, abort these steps."
7647 			if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) {
7648 				return;
7649 			}
7650 
7651 			// "If range's start node is a block node whose sole child is a br, and
7652 			// its start offset is 0, remove its start node's child from it."
7653 			if (isBlockNode(range.startContainer) && range.startContainer.childNodes.length == 1 && isNamedHtmlElement(range.startContainer.firstChild, "br") && range.startOffset == 0) {
7654 				range.startContainer.removeChild(range.startContainer.firstChild);
7655 			}
7656 
7657 			// "Let img be the result of calling createElement("img") on the
7658 			// context object."
7659 			var img = document.createElement("img");
7660 
7661 			// "Run setAttribute("src", value) on img."
7662 			img.setAttribute("src", value);
7663 
7664 			// "Run insertNode(img) on the range."
7665 			range.insertNode(img);
7666 7667 
			// "Run collapse() on the Selection, with first argument equal to the
7668 			// parent of img and the second argument equal to one plus the index of
7669 			// img."
7670 			//
7671 			// Not everyone actually supports collapse(), so we do it manually
7672 			// instead.  Also, we need to modify the actual range we're given as
7673 			// well, for the sake of autoimplementation.html's range-filling-in.
7674 			range.setStart(img.parentNode, 1 + Dom.getIndexInParent(img));
7675 			range.setEnd(img.parentNode, 1 + Dom.getIndexInParent(img));
7676 			Aloha.getSelection().removeAllRanges();
7677 			Aloha.getSelection().addRange(range);
7678 
7679 			// IE adds width and height attributes for some reason, so remove those
7680 			// to actually do what the spec says.
7681 			img.removeAttribute("width");
7682 			img.removeAttribute("height");
7683 		}
7684 	};
7685 
7686 	//@}
7687 	///// The insertLineBreak command /////
7688 	//@{
7689 	commands.insertlinebreak = {
7690 		action: function (value, range) {
7691 			// "Delete the contents of the active range, with strip wrappers false."
7692 			deleteContents(range, {
7693 				stripWrappers: false
7694 			});
7695 
7696 			// "If the active range's start node is neither editable nor an editing
7697 			// host, abort these steps."
7698 			if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) {
7699 				return;
7700 			}
7701 
7702 			// "If the active range's start node is an Element, and "br" is not an
7703 			// allowed child of it, abort these steps."
7704 			if (range.startContainer.nodeType == $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer)) {
7705 				return;
7706 			}
7707 
7708 			// "If the active range's start node is not an Element, and "br" is not
7709 			// an allowed child of the active range's start node's parent, abort
7710 			// these steps."
7711 			if (range.startContainer.nodeType != $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer.parentNode)) {
7712 				return;
7713 			}
7714 
7715 			// "If the active range's start node is a Text node and its start
7716 			// offset is zero, call collapse() on the context object's Selection,
7717 			// with first argument equal to the active range's start node's parent
7718 			// and second argument equal to the active range's start node's index."
7719 			var newNode, newOffset;
7720 			if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == 0) {
7721 				newNode = range.startContainer.parentNode;
7722 				newOffset = Dom.getIndexInParent(range.startContainer);
7723 				Aloha.getSelection().collapse(newNode, newOffset);
7724 				range.setStart(newNode, newOffset);
7725 				range.setEnd(newNode, newOffset);
7726 			}
7727 
7728 			// "If the active range's start node is a Text node and its start
7729 			// offset is the length of its start node, call collapse() on the
7730 			// context object's Selection, with first argument equal to the active
7731 			// range's start node's parent and second argument equal to one plus
7732 			// the active range's start node's index."
7733 			if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == getNodeLength(range.startContainer)) {
7734 				newNode = range.startContainer.parentNode;
7735 				newOffset = 1 + Dom.getIndexInParent(range.startContainer);
7736 				Aloha.getSelection().collapse(newNode, newOffset);
7737 				range.setStart(newNode, newOffset);
7738 				range.setEnd(newNode, newOffset);
7739 			}
7740 
7741 			// "Let br be the result of calling createElement("br") on the context
7742 			// object."
7743 			var br = document.createElement("br");
7744 
7745 			// "Call insertNode(br) on the active range."
7746 			range.insertNode(br);
7747 
7748 			// "Call collapse() on the context object's Selection, with br's parent
7749 			// as the first argument and one plus br's index as the second
7750 			// argument."
7751 			Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br));
7752 			range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br));
7753 			range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br));
7754 
7755 			// "If br is a collapsed line break, call createElement("br") on the
7756 			// context object and let extra br be the result, then call
7757 			// insertNode(extra br) on the active range."
7758 			if (isCollapsedLineBreak(br)) {
7759 				// TODO
7760 				range.insertNode(createEndBreak());
7761 
7762 				// Compensate for nonstandard implementations of insertNode
7763 				Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br));
7764 				range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br));
7765 				range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br));
7766 			}
7767 
7768 			// IE7 is adding this styles: height: auto; min-height: 0px; max-height: none;
7769 			// with that there is the ugly "IE-editable-outline"
7770 			if (jQuery.browser.msie && jQuery.browser.version < 8) {
7771 				br.parentNode.removeAttribute("style");
7772 			}
7773 		}
7774 	};
7775 
7776 	//@}
7777 	///// The insertOrderedList command /////
7778 	//@{
7779 	commands.insertorderedlist = {
7780 		// "Toggle lists with tag name "ol"."
7781 		action: function (value, range) {
7782 			toggleLists("ol", range);
7783 		},
7784 		// "True if the selection's list state is "mixed" or "mixed ol", false
7785 		// otherwise."
7786 		indeterm: function () {
7787 			return (/^mixed( ol)?$/).test(getSelectionListState());
7788 		},
7789 		// "True if the selection's list state is "ol", false otherwise."
7790 		state: function () {
7791 			return getSelectionListState() == "ol";
7792 		}
7793 	};
7794 
7795 	var listRelatedElements = {
7796 		"LI": true,
7797 		"DT": true,
7798 		"DD": true
7799 	};
7800 
7801 	//@}
7802 	///// The insertParagraph command /////
7803 	//@{
7804 	commands.insertparagraph = {
7805 		action: function (value, range) {
7806 			var i;
7807 
7808 			// "Delete the contents of the active range."
7809 			deleteContents(range);
7810 
7811 			// clean lists in the editing host, this will remove any whitespace nodes around lists
7812 			// because the following algorithm is not prepared to deal with them
7813 			cleanLists(getEditingHostOf(range.startContainer), range);
7814 
7815 			// "If the active range's start node is neither editable nor an editing
7816 			// host, abort these steps."
7817 			if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) {
7818 				return;
7819 			}
7820 
7821 			// "Let node and offset be the active range's start node and offset."
7822 			var node = range.startContainer;
7823 			var offset = range.startOffset;
7824 
7825 			// "If node is a Text node, and offset is neither 0 nor the length of
7826 			// node, call splitText(offset) on node."
7827 			if (node.nodeType == $_.Node.TEXT_NODE && offset != 0 && offset != getNodeLength(node)) {
7828 				splitText(node, offset);
7829 			}
7830 
7831 			// "If node is a Text node and offset is its length, set offset to one
7832 			// plus the index of node, then set node to its parent."
7833 			if (node.nodeType == $_.Node.TEXT_NODE && offset == getNodeLength(node)) {
7834 				offset = 1 + Dom.getIndexInParent(node);
7835 				node = node.parentNode;
7836 			}
7837 
7838 7839 			// "If node is a Text or Comment node, set offset to the index of node,
7840 			// then set node to its parent."
7841 			if (node.nodeType == $_.Node.TEXT_NODE || node.nodeType == $_.Node.COMMENT_NODE) {
7842 				offset = Dom.getIndexInParent(node);
7843 				node = node.parentNode;
7844 			}
7845 
7846 			// "Call collapse(node, offset) on the context object's Selection."
7847 			Aloha.getSelection().collapse(node, offset);
7848 			range.setStart(node, offset);
7849 			range.setEnd(node, offset);
7850 
7851 			// "Let container equal node."
7852 			var container = node;
7853 
7854 			// "While container is not a single-line container, and container's
7855 			// parent is editable and in the same editing host as node, set
7856 			// container to its parent."
7857 			while (!isSingleLineContainer(container) && isEditable(container.parentNode) && inSameEditingHost(node, container.parentNode)) {
7858 				container = container.parentNode;
7859 			}
7860 
7861 			// "If container is not editable or not in the same editing host as
7862 			// node or is not a single-line container:"
7863 			if (!isEditable(container) || !inSameEditingHost(container, node) || !isSingleLineContainer(container)) {
7864 				// "Let tag be the default single-line container name."
7865 				var tag = defaultSingleLineContainerName;
7866 
7867 				// "Block-extend the active range, and let new range be the
7868 				// result."
7869 				var newRange = blockExtend(range);
7870 
7871 				// "Let node list be a list of nodes, initially empty."
7872 				//
7873 				// "Append to node list the first node in tree order that is
7874 				// contained in new range and is an allowed child of "p", if any."
7875 				var nodeList = getContainedNodes(newRange, function (node) {
7876 					return isAllowedChild(node, "p");
7877 				}).slice(0, 1);
7878 
7879 				// "If node list is empty:"
7880 				if (!nodeList.length) {
7881 					// "If tag is not an allowed child of the active range's start
7882 					// node, abort these steps."
7883 					if (!isAllowedChild(tag, range.startContainer)) {
7884 						return;
7885 					}
7886 
7887 					// "Set container to the result of calling createElement(tag)
7888 					// on the context object."
7889 					container = document.createElement(tag);
7890 
7891 					// "Call insertNode(container) on the active range."
7892 					range.insertNode(container);
7893 
7894 					// "Call createElement("br") on the context object, and append
7895 					// the result as the last child of container."
7896 					// TODO not always
7897 					container.appendChild(createEndBreak());
7898 
7899 					// "Call collapse(container, 0) on the context object's
7900 					// Selection."
7901 					// TODO: remove selection from command
7902 					Aloha.getSelection().collapse(container, 0);
7903 					range.setStart(container, 0);
7904 					range.setEnd(container, 0);
7905 
7906 					// "Abort these steps."
7907 					return;
7908 				}
7909 
7910 				// "While the nextSibling of the last member of node list is not
7911 				// null and is an allowed child of "p", append it to node list."
7912 				while (nodeList[nodeList.length - 1].nextSibling && isAllowedChild(nodeList[nodeList.length - 1].nextSibling, "p")) {
7913 					nodeList.push(nodeList[nodeList.length - 1].nextSibling);
7914 				}
7915 
7916 				// "Wrap node list, with sibling criteria returning false and new
7917 				// parent instructions returning the result of calling
7918 				// createElement(tag) on the context object. Set container to the
7919 				// result."
7920 				container = wrap(
7921 					nodeList,
7922 					function () {
7923 						return false;
7924 					},
7925 					function () {
7926 						return document.createElement(tag);
7927 					},
7928 					range
7929 				);
7930 			}
7931 
7932 			// If no container has been set yet, it is not possible to insert a paragraph at this position;
7933 			// the following steps are skipped in order to prevent critical errors from occurring;
7934 			if (!container) {
7935 				return;
7936 			}
7937 
7938 			// "If container's local name is "address", "listing", or "pre":"
7939 			var oldHeight, newHeight;
7940 			if (container.tagName == "ADDRESS" || container.tagName == "LISTING" || container.tagName == "PRE") {
7941 				// "Let br be the result of calling createElement("br") on the
7942 				// context object."
7943 				var br = document.createElement("br");
7944 
7945 				// remember the old height
7946 				oldHeight = container.offsetHeight;
7947 
7948 7949 				// "Call insertNode(br) on the active range."
7950 				range.insertNode(br);
7951 
7952 				// determine the new height
7953 				newHeight = container.offsetHeight;
7954 
7955 				// "Call collapse(node, offset + 1) on the context object's
7956 				// Selection."
7957 				Aloha.getSelection().collapse(node, offset + 1);
7958 				range.setStart(node, offset + 1);
7959 				range.setEnd(node, offset + 1);
7960 
7961 				// "If br is the last descendant of container, let br be the result
7962 				// of calling createElement("br") on the context object, then call
7963 				// insertNode(br) on the active range." (Fix: only do this, if the container height did not change by inserting a single <br/>)
7964 				//
7965 				// Work around browser bugs: some browsers select the
7966 				// newly-inserted node, not per spec.
7967 				if (oldHeight == newHeight && !isDescendant(nextNode(br), container)) {
7968 					// TODO check
7969 					range.insertNode(createEndBreak());
7970 					Aloha.getSelection().collapse(node, offset + 1);
7971 					range.setEnd(node, offset + 1);
7972 				}
7973 
7974 				// "Abort these steps."
7975 7976 				return;
7977 			}
7978 
7979 			// "If container's local name is "li", "dt", or "dd"; and either it has
7980 			// no children or it has a single child and that child is a br:"
7981 			if (listRelatedElements[container.tagName] && (!container.hasChildNodes() || (container.childNodes.length == 1 && isNamedHtmlElement(container.firstChild, "br")))) {
7982 				// "Split the parent of the one-node list consisting of container."
7983 				splitParent([container], range);
7984 
7985 				// "If container has no children, call createElement("br") on the
7986 				// context object and append the result as the last child of
7987 				// container."
7988 				// only do this, if inserting the br does NOT modify the offset height of the container
7989 				//			if (!container.hasChildNodes()) {
7990 				//				var oldHeight = container.offsetHeight, endBr = createEndBreak();
7991 				//				container.appendChild(endBr);
7992 				//				if (container.offsetHeight !== oldHeight) {
7993 				//					container.removeChild(endBr);
7994 				//				}
7995 				//			}
7996 
7997 				// "If container is a dd or dt, and it is not an allowed child of
7998 				// any of its ancestors in the same editing host, set the tag name
7999 				// of container to the default single-line container name and let
8000 				// container be the result."
8001 				if (isHtmlElementInArray(container, ["dd", "dt"]) && $_(getAncestors(container)).every(function (ancestor) { return !inSameEditingHost(container, ancestor) || !isAllowedChild(container, ancestor); })) {
8002 					container = setTagName(container, defaultSingleLineContainerName, range);
8003 				}
8004 
8005 				// "Fix disallowed ancestors of container."
8006 				fixDisallowedAncestors(container, range);
8007 
8008 				// fix invalid nested lists
8009 				if (isNamedHtmlElement(container, 'li') && isNamedHtmlElement(container.nextSibling, "li") && isHtmlElementInArray(container.nextSibling.firstChild, ["ol", "ul"])) {
8010 					// we found a li containing only a br followed by a li containing a list as first element: merge the two li's
8011 					var listParent = container.nextSibling,
8012 						length = container.nextSibling.childNodes.length;
8013 8014 					for (i = 0; i < length; i++) {
8015 						// we always move the first child into the container
8016 						container.appendChild(listParent.childNodes[0]);
8017 					}
8018 					listParent.parentNode.removeChild(listParent);
8019 				}
8020 
8021 				// "Abort these steps."
8022 				return;
8023 			}
8024 
8025 			// special behaviour when pressing enter in the last empty paragraph, that is nested in a blockquote
8026 			if (isNamedHtmlElement(container, "p")
8027 					&& isNamedHtmlElement(container.parentNode, "blockquote")
8028 						&& !container.nextSibling
8029 							&& (!container.hasChildNodes()
8030 									|| (container.childNodes.length === 1
8031 											&& isNamedHtmlElement(container.firstChild, "br")))) {
8032 				jQuery(container.parentNode).after(container);
8033 				return;
8034 			}
8035 
8036 			// "Let new line range be a new range whose start is the same as
8037 			// the active range's, and whose end is (container, length of
8038 			// container)."
8039 			var newLineRange = Aloha.createRange();
8040 			newLineRange.setStart(range.startContainer, range.startOffset);
8041 			newLineRange.setEnd(container, getNodeLength(container));
8042 
8043 			// "While new line range's start offset is zero and its start node is
8044 			// not container, set its start to (parent of start node, index of
8045 			// start node)."
8046 			while (newLineRange.startOffset == 0 && newLineRange.startContainer != container) {
8047 				newLineRange.setStart(newLineRange.startContainer.parentNode, Dom.getIndexInParent(newLineRange.startContainer));
8048 			}
8049 
8050 			// "While new line range's start offset is the length of its start node
8051 			// and its start node is not container, set its start to (parent of
8052 			// start node, 1 + index of start node)."
8053 			while (newLineRange.startOffset == getNodeLength(newLineRange.startContainer) && newLineRange.startContainer != container) {
8054 				newLineRange.setStart(newLineRange.startContainer.parentNode, 1 + Dom.getIndexInParent(newLineRange.startContainer));
8055 			}
8056 
8057 			// "Let end of line be true if new line range contains either nothing
8058 			// or a single br, and false otherwise."
8059 			var containedInNewLineRange = getContainedNodes(newLineRange);
8060 			var endOfLine = !containedInNewLineRange.length || (containedInNewLineRange.length == 1 && isNamedHtmlElement(containedInNewLineRange[0], "br"));
8061 
8062 			// "If the local name of container is "h1", "h2", "h3", "h4", "h5", or
8063 			// "h6", and end of line is true, let new container name be the default
8064 			// single-line container name."
8065 			var newContainerName;
8066 			if (/^H[1-6]$/.test(container.tagName) && endOfLine) {
8067 				newContainerName = defaultSingleLineContainerName;
8068 
8069 				// "Otherwise, if the local name of container is "dt" and end of line
8070 				// is true, let new container name be "dd"."
8071 			} else if (container.tagName == "DT" && endOfLine) {
8072 				newContainerName = "dd";
8073 
8074 				// "Otherwise, if the local name of container is "dd" and end of line
8075 				// is true, let new container name be "dt"."
8076 			} else if (container.tagName == "DD" && endOfLine) {
8077 				newContainerName = "dt";
8078 
8079 				// "Otherwise, let new container name be the local name of container."
8080 			} else {
8081 				newContainerName = container.tagName.toLowerCase();
8082 			}
8083 
8084 			// "Let new container be the result of calling createElement(new
8085 8086 			// container name) on the context object."
8087 			var newContainer = document.createElement(newContainerName);
8088 
8089 			// "Copy all non empty attributes of the container to new container."
8090 			copyAttributes(container, newContainer);
8091 
8092 			// "If new container has an id attribute, unset it."
8093 			newContainer.removeAttribute("id");
8094 
8095 			// "Insert new container into the parent of container immediately after
8096 			// container."
8097 			container.parentNode.insertBefore(newContainer, container.nextSibling);
8098 
8099 			// "Let contained nodes be all nodes contained in new line range."
8100 			var containedNodes = getAllContainedNodes(newLineRange);
8101 
8102 			// "Let frag be the result of calling extractContents() on new line
8103 			// range."
8104 			var frag = newLineRange.extractContents();
8105 
8106 			// "Unset the id attribute (if any) of each Element descendant of frag
8107 			// that is not in contained nodes."
8108 			var descendants = getDescendants(frag);
8109 			for (i = 0; i < descendants.length; i++) {
8110 				if (descendants[i].nodeType == $_.Node.ELEMENT_NODE && $_(containedNodes).indexOf(descendants[i]) == -1) {
8111 					descendants[i].removeAttribute("id");
8112 				}
8113 			}
8114 
8115 			var fragChildren = [],
8116 				fragChild = frag.firstChild;
8117 			if (fragChild) {
8118 				do {
8119 					if (!isWhitespaceNode(fragChild)) {
8120 						fragChildren.push(fragChild);
8121 					}
8122 				} while (null != (fragChild = fragChild.nextSibling));
8123 			}
8124 
8125 			// if newContainer is a li and frag contains only a list, we add a br in the li (but only if the height would not change)
8126 			if (isNamedHtmlElement(newContainer, 'li') && fragChildren.length && isHtmlElementInArray(fragChildren[0], ["ul", "ol"])) {
8127 				oldHeight = newContainer.offsetHeight;
8128 				var endBr = createEndBreak();
8129 				newContainer.appendChild(endBr);
8130 				newHeight = newContainer.offsetHeight;
8131 				if (oldHeight !== newHeight) {
8132 					newContainer.removeChild(endBr);
8133 				}
8134 			}
8135 
8136 			// "Call appendChild(frag) on new container."
8137 			newContainer.appendChild(frag);
8138 
8139 			// "If container has no visible children, call createElement("br") on
8140 			// the context object, and append the result as the last child of
8141 			// container."
8142 			ensureContainerEditable(container);
8143 
8144 			// "If new container has no visible children, call createElement("br")
8145 			// on the context object, and append the result as the last child of
8146 			// new container."
8147 			ensureContainerEditable(newContainer);
8148 
8149 			// "Call collapse(new container, 0) on the context object's Selection."
8150 			Aloha.getSelection().collapse(newContainer, 0);
8151 			range.setStart(newContainer, 0);
8152 			range.setEnd(newContainer, 0);
8153 		}
8154 	};
8155 
8156 	//@}
8157 	///// The insertText command /////
8158 	//@{
8159 	commands.inserttext = {
8160 		action: function (value, range) {
8161 			var i;
8162 
8163 			// "Delete the contents of the active range, with strip wrappers
8164 			// false."
8165 			deleteContents(range, {
8166 				stripWrappers: false
8167 			});
8168 
8169 			// "If the active range's start node is neither editable nor an editing
8170 			// host, abort these steps."
8171 			if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) {
8172 				return;
8173 			}
8174 
8175 			// "If value's length is greater than one:"
8176 			if (value.length > 1) {
8177 				// "For each element el in value, take the action for the
8178 				// insertText command, with value equal to el."
8179 				for (i = 0; i < value.length; i++) {
8180 					commands.inserttext.action(value[i], range);
8181 				}
8182 
8183 				// "Abort these steps."
8184 				return;
8185 			}
8186 
8187 			// "If value is the empty string, abort these steps."
8188 			if (value == "") {
8189 				return;
8190 			}
8191 
8192 			// "If value is a newline (U+00A0), take the action for the
8193 			// insertParagraph command and abort these steps."
8194 			if (value == "\n") {
8195 				commands.insertparagraph.action('', range);
8196 				return;
8197 			}
8198 
8199 			// "Let node and offset be the active range's start node and offset."
8200 			var node = range.startContainer;
8201 			var offset = range.startOffset;
8202 
8203 			// "If node has a child whose index is offset − 1, and that child is a
8204 			// Text node, set node to that child, then set offset to node's
8205 			// length."
8206 			if (0 <= offset - 1 && offset - 1 < node.childNodes.length && node.childNodes[offset - 1].nodeType == $_.Node.TEXT_NODE) {
8207 				node = node.childNodes[offset - 1];
8208 				offset = getNodeLength(node);
8209 			}
8210 
8211 			// "If node has a child whose index is offset, and that child is a Text
8212 			// node, set node to that child, then set offset to zero."
8213 			if (0 <= offset && offset < node.childNodes.length && node.childNodes[offset].nodeType == $_.Node.TEXT_NODE) {
8214 				node = node.childNodes[offset];
8215 				offset = 0;
8216 			}
8217 
8218 			// "If value is a space (U+0020), and either node is an Element whose
8219 			// resolved value for "white-space" is neither "pre" nor "pre-wrap" or
8220 			// node is not an Element but its parent is an Element whose resolved
8221 			// value for "white-space" is neither "pre" nor "pre-wrap", set value
8222 			// to a non-breaking space (U+00A0)."
8223 			var refElement = node.nodeType == $_.Node.ELEMENT_NODE ? node : node.parentNode;
8224 			if (value == " " && refElement.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(refElement).whiteSpace, ["pre", "pre-wrap"]) == -1) {
8225 				value = "\xa0";
8226 			}
8227 
8228 			// "Record current overrides, and let overrides be the result."
8229 			var overrides = recordCurrentOverrides(range);
8230 
8231 			// "If node is a Text node:"
8232 			if (node.nodeType == $_.Node.TEXT_NODE) {
8233 				// "Call insertData(offset, value) on node."
8234 				node.insertData(offset, value);
8235 
8236 				// "Call collapse(node, offset) on the context object's Selection."
8237 				Aloha.getSelection().collapse(node, offset);
8238 				range.setStart(node, offset);
8239 
8240 				// "Call extend(node, offset + 1) on the context object's
8241 				// Selection."
8242 				Aloha.getSelection().extend(node, offset + 1);
8243 				range.setEnd(node, offset + 1);
8244 
8245 				// "Otherwise:"
8246 			} else {
8247 				// "If node has only one child, which is a collapsed line break,
8248 				// remove its child from it."
8249 				//
8250 				// FIXME: IE incorrectly returns false here instead of true
8251 				// sometimes?
8252 				if (node.childNodes.length == 1 && isCollapsedLineBreak(node.firstChild)) {
8253 					node.removeChild(node.firstChild);
8254 				}
8255 
8256 				// "Let text be the result of calling createTextNode(value) on the
8257 				// context object."
8258 				var text = document.createTextNode(value);
8259 
8260 				// "Call insertNode(text) on the active range."
8261 				range.insertNode(text);
8262 
8263 				// "Call collapse(text, 0) on the context object's Selection."
8264 				Aloha.getSelection().collapse(text, 0);
8265 				range.setStart(text, 0);
8266 
8267 				// "Call extend(text, 1) on the context object's Selection."
8268 				Aloha.getSelection().extend(text, 1);
8269 				range.setEnd(text, 1);
8270 			}
8271 8272 
			// "Restore states and values from overrides."
8273 			restoreStatesAndValues(overrides, range);
8274 
8275 			// "Canonicalize whitespace at the active range's start."
8276 			canonicalizeWhitespace(range.startContainer, range.startOffset);
8277 
8278 			// "Canonicalize whitespace at the active range's end."
8279 			canonicalizeWhitespace(range.endContainer, range.endOffset);
8280 
8281 			// "Call collapseToEnd() on the context object's Selection."
8282 			Aloha.getSelection().collapseToEnd();
8283 			range.collapse(false);
8284 		}
8285 	};
8286 
8287 	//@}
8288 	///// The insertUnorderedList command /////
8289 	//@{
8290 	commands.insertunorderedlist = {
8291 		// "Toggle lists with tag name "ul"."
8292 		action: function (value, range) {
8293 			toggleLists("ul", range);
8294 		},
8295 		// "True if the selection's list state is "mixed" or "mixed ul", false
8296 		// otherwise."
8297 		indeterm: function () {
8298 			return (/^mixed( ul)?$/).test(getSelectionListState());
8299 		},
8300 		// "True if the selection's list state is "ul", false otherwise."
8301 		state: function () {
8302 			return getSelectionListState() == "ul";
8303 		}
8304 	};
8305 
8306 	//@}
8307 	///// The justifyCenter command /////
8308 	//@{
8309 	commands.justifycenter = {
8310 		// "Justify the selection with alignment "center"."
8311 8312 		action: function (value, range) {
8313 			justifySelection("center", range);
8314 		},
8315 		indeterm: function () {
8316 			// "Block-extend the active range. Return true if among visible
8317 			// editable nodes that are contained in the result and have no
8318 			// children, at least one has alignment value "center" and at least one
8319 			// does not. Otherwise return false."
8320 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8321 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8322 			});
8323 			return $_(nodes).some(function (node) { return getAlignmentValue(node) == "center"; })
8324 				&& $_(nodes).some(function (node) { return getAlignmentValue(node) != "center"; });
8325 		},
8326 		state: function () {
8327 			// "Block-extend the active range. Return true if there is at least one
8328 			// visible editable node that is contained in the result and has no
8329 			// children, and all such nodes have alignment value "center".
8330 			// Otherwise return false."
8331 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8332 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8333 			});
8334 			return nodes.length && $_(nodes).every(function (node) {
8335 				return getAlignmentValue(node) == "center";
8336 			});
8337 		},
8338 		value: function () {
8339 			// "Block-extend the active range, and return the alignment value of
8340 			// the first visible editable node that is contained in the result and
8341 			// has no children. If there is no such node, return "left"."
8342 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8343 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8344 			});
8345 			if (nodes.length) {
8346 				return getAlignmentValue(nodes[0]);
8347 			}
8348 			return "left";
8349 		}
8350 	};
8351 
8352 	//@}
8353 	///// The justifyFull command /////
8354 	//@{
8355 	commands.justifyfull = {
8356 		// "Justify the selection with alignment "justify"."
8357 		action: function (value, range) {
8358 			justifySelection("justify", range);
8359 		},
8360 		indeterm: function () {
8361 			// "Block-extend the active range. Return true if among visible
8362 			// editable nodes that are contained in the result and have no
8363 			// children, at least one has alignment value "justify" and at least
8364 			// one does not. Otherwise return false."
8365 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8366 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8367 			});
8368 			return $_(nodes).some(function (node) { return getAlignmentValue(node) == "justify"; })
8369 				&& $_(nodes).some(function (node) { return getAlignmentValue(node) != "justify"; });
8370 		},
8371 		state: function () {
8372 			// "Block-extend the active range. Return true if there is at least one
8373 			// visible editable node that is contained in the result and has no
8374 			// children, and all such nodes have alignment value "justify".
8375 			// Otherwise return false."
8376 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8377 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8378 8379 			});
8380 			return nodes.length && $_(nodes).every(function (node) {
8381 				return getAlignmentValue(node) == "justify";
8382 			});
8383 		},
8384 		value: function () {
8385 			// "Block-extend the active range, and return the alignment value of
8386 			// the first visible editable node that is contained in the result and
8387 			// has no children. If there is no such node, return "left"."
8388 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8389 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8390 			});
8391 			if (nodes.length) {
8392 				return getAlignmentValue(nodes[0]);
8393 			}
8394 			return "left";
8395 		}
8396 	};
8397 
8398 	//@}
8399 	///// The justifyLeft command /////
8400 	//@{
8401 	commands.justifyleft = {
8402 		// "Justify the selection with alignment "left"."
8403 		action: function (value, range) {
8404 			justifySelection("left", range);
8405 		},
8406 		indeterm: function () {
8407 			// "Block-extend the active range. Return true if among visible
8408 			// editable nodes that are contained in the result and have no
8409 			// children, at least one has alignment value "left" and at least one
8410 			// does not. Otherwise return false."
8411 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8412 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8413 			});
8414 			return $_(nodes).some(function (node) { return getAlignmentValue(node) == "left"; })
8415 				&& $_(nodes).some(function (node) { return getAlignmentValue(node) != "left"; });
8416 		},
8417 		state: function () {
8418 			// "Block-extend the active range. Return true if there is at least one
8419 			// visible editable node that is contained in the result and has no
8420 			// children, and all such nodes have alignment value "left".  Otherwise
8421 			// return false."
8422 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8423 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8424 			});
8425 			return nodes.length && $_(nodes).every(function (node) {
8426 				return getAlignmentValue(node) == "left";
8427 			});
8428 		},
8429 		value: function () {
8430 			// "Block-extend the active range, and return the alignment value of
8431 			// the first visible editable node that is contained in the result and
8432 			// has no children. If there is no such node, return "left"."
8433 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8434 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8435 			});
8436 			if (nodes.length) {
8437 				return getAlignmentValue(nodes[0]);
8438 			}
8439 			return "left";
8440 		}
8441 	};
8442 
8443 	//@}
8444 	///// The justifyRight command /////
8445 	//@{
8446 	commands.justifyright = {
8447 		// "Justify the selection with alignment "right"."
8448 		action: function (value, range) {
8449 			justifySelection("right", range);
8450 		},
8451 		indeterm: function () {
8452 			// "Block-extend the active range. Return true if among visible
8453 			// editable nodes that are contained in the result and have no
8454 			// children, at least one has alignment value "right" and at least one
8455 			// does not. Otherwise return false."
8456 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8457 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8458 			});
8459 			return $_(nodes).some(function (node) { return getAlignmentValue(node) == "right"; })
8460 				&& $_(nodes).some(function (node) { return getAlignmentValue(node) != "right"; });
8461 		},
8462 		state: function () {
8463 			// "Block-extend the active range. Return true if there is at least one
8464 			// visible editable node that is contained in the result and has no
8465 			// children, and all such nodes have alignment value "right".
8466 			// Otherwise return false."
8467 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8468 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8469 			});
8470 			return nodes.length && $_(nodes).every(function (node) {
8471 				return getAlignmentValue(node) == "right";
8472 			});
8473 		},
8474 		value: function () {
8475 			// "Block-extend the active range, and return the alignment value of
8476 			// the first visible editable node that is contained in the result and
8477 			// has no children. If there is no such node, return "left"."
8478 			var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) {
8479 				return isEditable(node) && isVisible(node) && !node.hasChildNodes();
8480 			});
8481 			if (nodes.length) {
8482 				return getAlignmentValue(nodes[0]);
8483 			}
8484 			return "left";
8485 		}
8486 	};
8487 
8488 	//@}
8489 	///// The outdent command /////
8490 	//@{
8491 	commands.outdent = {
8492 		action: function () {
8493 			// "Let items be a list of all lis that are ancestor containers of the
8494 			// range's start and/or end node."
8495 			//
8496 			// It's annoying to get this in tree order using functional stuff
8497 			// without doing getDescendants(document), which is slow, so I do it
8498 			// imperatively.
8499 			var items = [];
8500 			(function () {
8501 				var ancestorContainer;
8502 				for (ancestorContainer = getActiveRange().endContainer;
8503 					     ancestorContainer != getActiveRange().commonAncestorContainer;
8504 					     ancestorContainer = ancestorContainer.parentNode) {
8505 					if (isNamedHtmlElement(ancestorContainer, "li")) {
8506 						items.unshift(ancestorContainer);
8507 					}
8508 				}
8509 				for (ancestorContainer = getActiveRange().startContainer;
8510 					     ancestorContainer;
8511 					     ancestorContainer = ancestorContainer.parentNode) {
8512 					if (isNamedHtmlElement(ancestorContainer, "li")) {
8513 						items.unshift(ancestorContainer);
8514 					}
8515 				}
8516 8517 			}());
8518 
8519 			// "For each item in items, normalize sublists of item."
8520 			$_(items).forEach(function (thisArg) {
8521 				normalizeSublists(thisArg, getActiveRange());
8522 			});
8523 
8524 			// "Block-extend the active range, and let new range be the result."
8525 			var newRange = blockExtend(getActiveRange());
8526 
8527 			// "Let node list be a list of nodes, initially empty."
8528 			//
8529 			// "For each node node contained in new range, append node to node list
8530 			// if the last member of node list (if any) is not an ancestor of node;
8531 			// node is editable; and either node has no editable descendants, or is
8532 			// an ol or ul, or is an li whose parent is an ol or ul."
8533 			var nodeList = getContainedNodes(newRange, function (node) {
8534 				return isEditable(node) && (!$_(getDescendants(node)).some(isEditable) || isHtmlElementInArray(node, ["ol", "ul"]) || (isNamedHtmlElement(node, 'li') && isHtmlElementInArray(node.parentNode, ["ol", "ul"])));
8535 			});
8536 
8537 			// "While node list is not empty:"
8538 			while (nodeList.length) {
8539 				// "While the first member of node list is an ol or ul or is not
8540 				// the child of an ol or ul, outdent it and remove it from node
8541 				// list."
8542 				while (nodeList.length && (isHtmlElementInArray(nodeList[0], ["OL", "UL"]) || !isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]))) {
8543 					outdentNode(nodeList.shift(), newRange);
8544 				}
8545 
8546 				// "If node list is empty, break from these substeps."
8547 				if (!nodeList.length) {
8548 					break;
8549 				}
8550 
8551 8552 				// "Let sublist be a list of nodes, initially empty."
8553 				var sublist = [];
8554 
8555 				// "Remove the first member of node list and append it to sublist."
8556 				sublist.push(nodeList.shift());
8557 
8558 				// "While the first member of node list is the nextSibling of the
8559 				// last member of sublist, and the first member of node list is not
8560 				// an ol or ul, remove the first member of node list and append it
8561 				// to sublist."
8562 				while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElementInArray(nodeList[0], ["OL", "UL"])) {
8563 					sublist.push(nodeList.shift());
8564 				}
8565 
8566 				// "Record the values of sublist, and let values be the result."
8567 				var values = recordValues(sublist);
8568 
8569 				// "Split the parent of sublist, with new parent null."
8570 				splitParent(sublist, newRange);
8571 
8572 				// "Fix disallowed ancestors of each member of sublist."
8573 				$_(sublist).forEach(fixDisallowedAncestors);
8574 
8575 				// "Restore the values from values."
8576 				restoreValues(values, newRange);
8577 			}
8578 		}
8579 	};
8580 
8581 	//@}
8582 
8583 	//////////////////////////////////
8584 	///// Miscellaneous commands /////
8585 	//////////////////////////////////
8586 
8587 	///// The selectAll command /////
8588 	//@{
8589 	commands.selectall = {
8590 		// Note, this ignores the whole globalRange/getActiveRange() thing and
8591 		// works with actual selections.  Not suitable for autoimplementation.html.
8592 		action: function () {
8593 			// "Let target be the body element of the context object."
8594 			var target = document.body;
8595 
8596 			// "If target is null, let target be the context object's
8597 			// documentElement."
8598 			if (!target) {
8599 				target = document.documentElement;
8600 			}
8601 
8602 			// "If target is null, call getSelection() on the context object, and
8603 			// call removeAllRanges() on the result."
8604 			if (!target) {
8605 				Aloha.getSelection().removeAllRanges();
8606 
8607 				// "Otherwise, call getSelection() on the context object, and call
8608 				// selectAllChildren(target) on the result."
8609 			} else {
8610 				Aloha.getSelection().selectAllChildren(target);
8611 			}
8612 		}
8613 	};
8614 
8615 	//@}
8616 	///// The styleWithCSS command /////
8617 	//@{
8618 	commands.stylewithcss = {
8619 		action: function (value) {
8620 			// "If value is an ASCII case-insensitive match for the string
8621 			// "false", set the CSS styling flag to false. Otherwise, set the
8622 			// CSS styling flag to true."
8623 			cssStylingFlag = String(value).toLowerCase() != "false";
8624 		},
8625 		state: function () {
8626 			return cssStylingFlag;
8627 		}
8628 	};
8629 
8630 	//@}
8631 	///// The useCSS command /////
8632 	//@{
8633 	commands.usecss = {
8634 		action: function (value) {
8635 			// "If value is an ASCII case-insensitive match for the string "false",
8636 			// set the CSS styling flag to true. Otherwise, set the CSS styling
8637 			// flag to false."
8638 			cssStylingFlag = String(value).toLowerCase() == "false";
8639 		}
8640 	};
8641 	//@}
8642 
8643 	// Some final setup
8644 	//@{
8645 	(function () {
8646 		// Opera 11.50 doesn't implement Object.keys, so I have to make an explicit
8647 		// temporary, which means I need an extra closure to not leak the temporaries
8648 		// into the global namespace.  >:(
8649 		var commandNames = [];
8650 		var command;
8651 		for (command in commands) {
8652 			if (commands.hasOwnProperty(command)) {
8653 				commandNames.push(command);
8654 			}
8655 		}
8656 		$_(commandNames).forEach(function (command) {
8657 			// "If a command does not have a relevant CSS property specified, it
8658 			// defaults to null."
8659 			if (null == commands[command].relevantCssProperty) {
8660 				commands[command].relevantCssProperty = null;
8661 			}
8662 
8663 			// "If a command has inline command activated values defined but
8664 			// nothing else defines when it is indeterminate, it is indeterminate
8665 			// if among editable Text nodes effectively contained in the active
8666 			// range, there is at least one whose effective command value is one of
8667 			// the given values and at least one whose effective command value is
8668 			// not one of the given values."
8669 			if (null != commands[command].inlineCommandActivatedValues && null == commands[command].indeterm) {
8670 				commands[command].indeterm = function (range) {
8671 					var values = $_(getAllEffectivelyContainedNodes(range, function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; }))
8672 						.map(function (node) { return getEffectiveCommandValue(node, command); });
8673 
8674 					var matchingValues = $_(values).filter(function (value) {
8675 						return $_(commands[command].inlineCommandActivatedValues).indexOf(value) != -1;
8676 					});
8677 
8678 					return matchingValues.length >= 1 && values.length - matchingValues.length >= 1;
8679 				};
8680 			}
8681 
8682 			// "If a command has inline command activated values defined, its state
8683 			// is true if either no editable Text node is effectively contained in
8684 			// the active range, and the active range's start node's effective
8685 			// command value is one of the given values; or if there is at least
8686 			// one editable Text node effectively contained in the active range,
8687 			// and all of them have an effective command value equal to one of the
8688 			// given values."
8689 			if (null != commands[command].inlineCommandActivatedValues) {
8690 				commands[command].state = function (range) {
8691 					var nodes = getAllEffectivelyContainedNodes(range, function (node) {
8692 						return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
8693 					});
8694 
8695 					if (nodes.length == 0) {
8696 						return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(range.startContainer, command)) != -1;
8697 					}
8698 					return $_(nodes).every(function (node) {
8699 						return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1;
8700 					});
8701 				};
8702 			}
8703 
8704 			// "If a command is a standard inline value command, it is
8705 			// indeterminate if among editable Text nodes that are effectively
8706 			// contained in the active range, there are two that have distinct
8707 			// effective command values. Its value is the effective command value
8708 			// of the first editable Text node that is effectively contained in the
8709 			// active range, or if there is no such node, the effective command
8710 			// value of the active range's start node."
8711 			if (null != commands[command].standardInlineValueCommand) {
8712 				commands[command].indeterm = function () {
8713 					var values = $_(getAllEffectivelyContainedNodes(getActiveRange())).filter(function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; }, true)
8714 						.map(function (node) { return getEffectiveCommandValue(node, command); });
8715 					var i;
8716 					for (i = 1; i < values.length; i++) {
8717 						if (values[i] != values[i - 1]) {
8718 							return true;
8719 						}
8720 					}
8721 					return false;
8722 				};
8723 
8724 				commands[command].value = function (range) {
8725 					var refNode = getAllEffectivelyContainedNodes(range, function (node) {
8726 						return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE;
8727 					})[0];
8728 
8729 					if (typeof refNode == "undefined") {
8730 						refNode = range.startContainer;
8731 					}
8732 
8733 					return getEffectiveCommandValue(refNode, command);
8734 				};
8735 			}
8736 		});
8737 	}());
8738 	//@}
8739 	return {
8740 		commands: commands,
8741 		execCommand: myExecCommand,
8742 		queryCommandIndeterm: myQueryCommandIndeterm,
8743 		queryCommandState: myQueryCommandState,
8744 		queryCommandValue: myQueryCommandValue,
8745 		queryCommandEnabled: myQueryCommandEnabled,
8746 		queryCommandSupported: myQueryCommandSupported,
8747 		copyAttributes: copyAttributes,
8748 		createEndBreak: createEndBreak,
8749 		isEndBreak: isEndBreak,
8750 		ensureContainerEditable: ensureContainerEditable,
8751 		isEditingHost: isEditingHost,
8752 		isEditable: isEditable,
8753 		getStateOverride: getStateOverride,
8754 		setStateOverride: setStateOverride,
8755 		resetOverrides: resetOverrides,
8756 		unsetStateOverride: unsetStateOverride
8757 	};
8758 }); // end define
8759 // vim: foldmarker=@{,@} foldmethod=marker
8760