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 ///// Assorted block formatting command algorithms ///// 4531 //@{ 4532 4533 function fixDisallowedAncestors(node, range) { 4534 var i; 4535 4536 // "If node is not editable, abort these steps." 4537 if (!isEditable(node)) { 4538 return; 4539 } 4540 4541 // "If node is not an allowed child of any of its ancestors in the same 4542 // editing host, and is not an HTML element with local name equal to the 4543 // default single-line container name:" 4544 if ($_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); }) 4545 && !isHtmlElement_obsolete(node, defaultSingleLineContainerName)) { 4546 // "If node is a dd or dt, wrap the one-node list consisting of node, 4547 // with sibling criteria returning true for any dl with no attributes 4548 // and false otherwise, and new parent instructions returning the 4549 // result of calling createElement("dl") on the context object. Then 4550 // abort these steps." 4551 if (isHtmlElementInArray(node, ["dd", "dt"])) { 4552 wrap( 4553 [node], 4554 function (sibling) { 4555 return isNamedHtmlElement(sibling, 'dl') && !sibling.attributes.length; 4556 }, 4557 function () { 4558 return document.createElement("dl"); 4559 }, 4560 range 4561 ); 4562 return; 4563 } 4564 4565 // "If node is not a prohibited paragraph child, abort these steps." 4566 if (!isProhibitedParagraphChild(node)) { 4567 return; 4568 } 4569 4570 // "Set the tag name of node to the default single-line container name, 4571 // and let node be the result." 4572 node = setTagName(node, defaultSingleLineContainerName, range); 4573 4574 ensureContainerEditable(node); 4575 4576 // "Fix disallowed ancestors of node." 4577 fixDisallowedAncestors(node, range); 4578 4579 // "Let descendants be all descendants of node." 4580 var descendants = getDescendants(node); 4581 4582 // "Fix disallowed ancestors of each member of descendants." 4583 for (i = 0; i < descendants.length; i++) { 4584 fixDisallowedAncestors(descendants[i], range); 4585 } 4586 4587 // "Abort these steps." 4588 return; 4589 } 4590 4591 // "Record the values of the one-node list consisting of node, and let 4592 // values be the result." 4593 var values = recordValues([node]); 4594 var newStartOffset, newEndOffset; 4595 4596 // "While node is not an allowed child of its parent, split the parent of 4597 // the one-node list consisting of node." 4598 while (!isAllowedChild(node, node.parentNode)) { 4599 // If the parent contains only this node and possibly empty text nodes, we rather want to unwrap the node, instead of splitting. 4600 // With splitting, we would get empty nodes, like: 4601 // split: <p><p>foo</p></p> -> <p></p><p>foo</p> (bad) 4602 // unwrap: <p><p>foo</p></p> -> <p>foo</p> (good) 4603 4604 // First remove empty text nodes that are children of the parent and correct the range if necessary 4605 // we do this to have the node being the only child of its parent, so that we can replace the parent with the node 4606 for (i = node.parentNode.childNodes.length - 1; i >= 0; --i) { 4607 if (node.parentNode.childNodes[i].nodeType == 3 && node.parentNode.childNodes[i].data.length == 0) { 4608 // we remove the empty text node 4609 node.parentNode.removeChild(node.parentNode.childNodes[i]); 4610 4611 // if the range points to somewhere behind the removed text node, we reduce the offset 4612 if (range.startContainer == node.parentNode && range.startOffset > i) { 4613 range.startOffset--; 4614 } 4615 if (range.endContainer == node.parentNode && range.endOffset > i) { 4616 range.endOffset--; 4617 } 4618 } 4619 } 4620 4621 // now that the parent has only the node as child (because we 4622 // removed any existing empty text nodes), we can safely unwrap the 4623 // node's contents, and correct the range if necessary 4624 if (node.parentNode.childNodes.length == 1) { 4625 newStartOffset = range.startOffset; 4626 newEndOffset = range.endOffset; 4627 4628 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4629 // the node (1 element) will be replaced by its contents (contents().length elements) 4630 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4631 } 4632 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4633 // the node (1 element) will be replaced by its contents (contents().length elements) 4634 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4635 } 4636 jQuery(node).contents().unwrap(); 4637 range.startOffset = newStartOffset; 4638 range.endOffset = newEndOffset; 4639 // after unwrapping, we are done 4640 break; 4641 } else { 4642 // store the original parent 4643 var originalParent = node.parentNode; 4644 splitParent([node], range); 4645 // check whether the parent did not change, so the split did not work, e.g. 4646 // because we already reached the editing host itself. 4647 // this situation can occur, e.g. when we insert a paragraph into an contenteditable span 4648 // in such cases, we just unwrap the contents of the paragraph 4649 if (originalParent === node.parentNode) { 4650 // so we unwrap now 4651 newStartOffset = range.startOffset; 4652 newEndOffset = range.endOffset; 4653 4654 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4655 // the node (1 element) will be replaced by its contents (contents().length elements) 4656 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4657 } 4658 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4659 // the node (1 element) will be replaced by its contents (contents().length elements) 4660 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4661 } 4662 jQuery(node).contents().unwrap(); 4663 range.startOffset = newStartOffset; 4664 range.endOffset = newEndOffset; 4665 // after unwrapping, we are done 4666 break; 4667 } 4668 } 4669 } 4670 4671 // "Restore the values from values." 4672 restoreValues(values, range); 4673 } 4674 4675 /** 4676 * This method "normalizes" sublists of the given item (which is supposed to be a LI): 4677 * If sublists are found in the LI element, they are moved directly into the outer list. 4678 * @param item item 4679 * @param range range, which will be modified if necessary 4680 */ 4681 function normalizeSublists(item, range) { 4682 // "If item is not an li or it is not editable or its parent is not 4683 // editable, abort these steps." 4684 if (!isNamedHtmlElement(item, 'LI') || !isEditable(item) || !isEditable(item.parentNode)) { 4685 return; 4686 } 4687 4688 // "Let new item be null." 4689 var newItem = null; 4690 4691 function isOlUl(node) { 4692 return isHtmlElementInArray(node, ["OL", "UL"]); 4693 } 4694 4695 // "While item has an ol or ul child:" 4696 while ($_(item.childNodes).some(isOlUl)) { 4697 // "Let child be the last child of item." 4698 var child = item.lastChild; 4699 4700 // "If child is an ol or ul, or new item is null and child is a Text 4701 // node whose data consists of zero of more space characters:" 4702 if (isHtmlElementInArray(child, ["OL", "UL"]) || (!newItem && child.nodeType == $_.Node.TEXT_NODE && /^[ \t\n\f\r]*$/.test(child.data))) { 4703 // "Set new item to null." 4704 newItem = null; 4705 4706 // "Insert child into the parent of item immediately following 4707 // item, preserving ranges." 4708 movePreservingRanges(child, item.parentNode, 1 + Dom.getIndexInParent(item), range); 4709 4710 // "Otherwise:" 4711 } else { 4712 // "If new item is null, let new item be the result of calling 4713 // createElement("li") on the ownerDocument of item, then insert 4714 // new item into the parent of item immediately after item." 4715 if (!newItem) { 4716 newItem = item.ownerDocument.createElement("li"); 4717 item.parentNode.insertBefore(newItem, item.nextSibling); 4718 } 4719 4720 // "Insert child into new item as its first child, preserving 4721 // ranges." 4722 movePreservingRanges(child, newItem, 0, range); 4723 } 4724 } 4725 } 4726 4727 /** 4728 * This method is the exact opposite of normalizeSublists. 4729 * List nodes directly nested into each other are corrected to be nested in li elements (so that the resulting lists conform the html5 specification) 4730 * @param item list node 4731 * @param range range, which is preserved when modifying the list 4732 */ 4733 function unNormalizeSublists(item, range) { 4734 // "If item is not an ol or ol or it is not editable or its parent is not 4735 // editable, abort these steps." 4736 if (!isHtmlElementInArray(item, ["OL", "UL"]) || !isEditable(item)) { 4737 return; 4738 } 4739 4740 var $list = jQuery(item); 4741 $list.children("ol,ul").each(function (index, sublist) { 4742 if (isNamedHtmlElement(sublist.previousSibling, "LI")) { 4743 // move the sublist into the LI 4744 movePreservingRanges(sublist, sublist.previousSibling, sublist.previousSibling.childNodes.length, range); 4745 } 4746 }); 4747 } 4748 4749 //@} 4750 ///// Block-extending a range ///// 4751 //@{ 4752 4753 function blockExtend(range) { 4754 // "Let start node, start offset, end node, and end offset be the start 4755 // and end nodes and offsets of the range." 4756 var startNode = range.startContainer; 4757 var startOffset = range.startOffset; 4758 var endNode = range.endContainer; 4759 var endOffset = range.endOffset; 4760 4761 // "If some ancestor container of start node is an li, set start offset to 4762 // the index of the last such li in tree order, and set start node to that 4763 // li's parent." 4764 var liAncestors = $_(getAncestors(startNode).concat(startNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4765 if (liAncestors.length) { 4766 startOffset = Dom.getIndexInParent(liAncestors[0]); 4767 startNode = liAncestors[0].parentNode; 4768 } 4769 4770 // "If (start node, start offset) is not a block start point, repeat the 4771 // following steps:" 4772 if (!isBlockStartPoint(startNode, startOffset)) { 4773 do { 4774 // "If start offset is zero, set it to start node's index, then set 4775 // start node to its parent." 4776 if (startOffset == 0) { 4777 startOffset = Dom.getIndexInParent(startNode); 4778 startNode = startNode.parentNode; 4779 4780 // "Otherwise, subtract one from start offset." 4781 } else { 4782 startOffset--; 4783 } 4784 4785 // "If (start node, start offset) is a block boundary point, break from 4786 // this loop." 4787 } while (!isBlockBoundaryPoint(startNode, startOffset)); 4788 } 4789 4790 // "While start offset is zero and start node's parent is not null, set 4791 // start offset to start node's index, then set start node to its parent." 4792 while (startOffset == 0 && startNode.parentNode) { 4793 startOffset = Dom.getIndexInParent(startNode); 4794 startNode = startNode.parentNode; 4795 } 4796 4797 // "If some ancestor container of end node is an li, set end offset to one 4798 // plus the index of the last such li in tree order, and set end node to 4799 // that li's parent." 4800 liAncestors = $_(getAncestors(endNode).concat(endNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4801 if (liAncestors.length) { 4802 endOffset = 1 + Dom.getIndexInParent(liAncestors[0]); 4803 endNode = liAncestors[0].parentNode; 4804 } 4805 4806 // "If (end node, end offset) is not a block end point, repeat the 4807 // following steps:" 4808 if (!isBlockEndPoint(endNode, endOffset)) { 4809 do { 4810 // "If end offset is end node's length, set it to one plus end node's 4811 // index, then set end node to its parent." 4812 if (endOffset == getNodeLength(endNode)) { 4813 endOffset = 1 + Dom.getIndexInParent(endNode); 4814 endNode = endNode.parentNode; 4815 4816 // "Otherwise, add one to end offset. 4817 } else { 4818 endOffset++; 4819 } 4820 4821 // "If (end node, end offset) is a block boundary point, break from 4822 // this loop." 4823 } while (!isBlockBoundaryPoint(endNode, endOffset)); 4824 } 4825 4826 // "While end offset is end node's length and end node's parent is not 4827 // null, set end offset to one plus end node's index, then set end node to 4828 // its parent." 4829 while (endOffset == getNodeLength(endNode) && endNode.parentNode) { 4830 endOffset = 1 + Dom.getIndexInParent(endNode); 4831 endNode = endNode.parentNode; 4832 } 4833 4834 // "Let new range be a new range whose start and end nodes and offsets 4835 // are start node, start offset, end node, and end offset." 4836 var newRange = Aloha.createRange(); 4837 newRange.setStart(startNode, startOffset); 4838 newRange.setEnd(endNode, endOffset); 4839 4840 // "Return new range." 4841 return newRange; 4842 } 4843 4844 function getSelectionListState() { 4845 // "Block-extend the active range, and let new range be the result." 4846 var newRange = blockExtend(getActiveRange()); 4847 4848 // "Let node list be a list of nodes, initially empty." 4849 // 4850 // "For each node contained in new range, append node to node list if the 4851 // last member of node list (if any) is not an ancestor of node; node is 4852 // editable; node is not an indentation element; and node is either an ol 4853 // or ul, or the child of an ol or ul, or an allowed child of "li"." 4854 var nodeList = getContainedNodes(newRange, function (node) { 4855 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]) || isAllowedChild(node, "li")); 4856 }); 4857 4858 // "If node list is empty, return "none"." 4859 if (!nodeList.length) { 4860 return "none"; 4861 } 4862 4863 // "If every member of node list is either an ol or the child of an ol or 4864 // the child of an li child of an ol, and none is a ul or an ancestor of a 4865 // ul, return "ol"." 4866 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ol') 4867 || isNamedHtmlElement(node.parentNode, "ol") 4868 || (isNamedHtmlElement(node.parentNode, "li") 4869 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); }) 4870 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ul') || (node.querySelector && node.querySelector("ul")); })) { 4871 return "ol"; 4872 } 4873 4874 // "If every member of node list is either a ul or the child of a ul or the 4875 // child of an li child of a ul, and none is an ol or an ancestor of an ol, 4876 // return "ul"." 4877 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ul') 4878 || isNamedHtmlElement(node.parentNode, "ul") 4879 || (isNamedHtmlElement(node.parentNode, "li") 4880 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); }) 4881 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ol') || (node.querySelector && node.querySelector("ol")); })) { 4882 return "ul"; 4883 } 4884 4885 var hasOl = $_(nodeList).some(function (node) { 4886 return (isNamedHtmlElement(node, 'ol') 4887 || isNamedHtmlElement(node.parentNode, "ol") 4888 || (node.querySelector && node.querySelector("ol")) 4889 || (isNamedHtmlElement(node.parentNode, "li") 4890 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); 4891 }); 4892 var hasUl = $_(nodeList).some(function (node) { 4893 return (isNamedHtmlElement(node, 'ul') 4894 || isNamedHtmlElement(node.parentNode, "ul") 4895 || (node.querySelector && node.querySelector("ul")) 4896 || (isNamedHtmlElement(node.parentNode, "li") 4897 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); 4898 }); 4899 // "If some member of node list is either an ol or the child or ancestor of 4900 // an ol or the child of an li child of an ol, and some member of node list 4901 // is either a ul or the child or ancestor of a ul or the child of an li 4902 // child of a ul, return "mixed"." 4903 if (hasOl && hasUl) { 4904 return "mixed"; 4905 } 4906 4907 // "If some member of node list is either an ol or the child or ancestor of 4908 // an ol or the child of an li child of an ol, return "mixed ol"." 4909 if (hasOl) { 4910 return "mixed ol"; 4911 } 4912 4913 // "If some member of node list is either a ul or the child or ancestor of 4914 // a ul or the child of an li child of a ul, return "mixed ul"." 4915 if (hasUl) { 4916 return "mixed ul"; 4917 } 4918 4919 // "Return "none"." 4920 return "none"; 4921 } 4922 4923 function getAlignmentValue(node) { 4924 // "While node is neither null nor an Element, or it is an Element but its 4925 // "display" property has resolved value "inline" or "none", set node to 4926 // its parent." 4927 while ((node && node.nodeType != $_.Node.ELEMENT_NODE) || (node.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(node).display, ["inline", "none"]) != -1)) { 4928 node = node.parentNode; 4929 } 4930 4931 // "If node is not an Element, return "left"." 4932 if (!node || node.nodeType != $_.Node.ELEMENT_NODE) { 4933 return "left"; 4934 } 4935 4936 var resolvedValue = $_.getComputedStyle(node).textAlign 4937 // Hack around browser non-standardness 4938 .replace(/^-(moz|webkit)-/, "").replace(/^auto$/, "start"); 4939 4940 // "If node's "text-align" property has resolved value "start", return 4941 // "left" if the directionality of node is "ltr", "right" if it is "rtl"." 4942 if (resolvedValue == "start") { 4943 return getDirectionality(node) == "ltr" ? "left" : "right"; 4944 } 4945 4946 // "If node's "text-align" property has resolved value "end", return 4947 // "right" if the directionality of node is "ltr", "left" if it is "rtl"." 4948 if (resolvedValue == "end") { 4949 return getDirectionality(node) == "ltr" ? "right" : "left"; 4950 } 4951 4952 // "If node's "text-align" property has resolved value "center", "justify", 4953 // "left", or "right", return that value." 4954 if (jQuery.inArray(resolvedValue, ["center", "justify", "left", "right"]) != -1) { 4955 return resolvedValue; 4956 } 4957 4958 // "Return "left"." 4959 return "left"; 4960 } 4961 4962 //@} 4963 ///// Recording and restoring overrides ///// 4964 //@{ 4965 4966 function recordCurrentOverrides(range) { 4967 // "Let overrides be a list of (string, string or boolean) ordered pairs, 4968 // initially empty." 4969 var overrides = []; 4970 4971 // "If there is a value override for "createLink", add ("createLink", value 4972 // override for "createLink") to overrides." 4973 if (getValueOverride("createlink", range) !== undefined) { 4974 overrides.push(["createlink", getValueOverride("createlink", range)]); 4975 } 4976 4977 // "For each command in the list "bold", "italic", "strikethrough", 4978 // "subscript", "superscript", "underline", in order: if there is a state 4979 // override for command, add (command, command's state override) to 4980 // overrides." 4981 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 4982 if (getStateOverride(command, range) !== undefined) { 4983 overrides.push([command, getStateOverride(command, range)]); 4984 } 4985 }); 4986 4987 // "For each command in the list "fontName", "fontSize", "foreColor", 4988 // "hiliteColor", in order: if there is a value override for command, add 4989 // (command, command's value override) to overrides." 4990 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 4991 if (getValueOverride(command, range) !== undefined) { 4992 overrides.push([command, getValueOverride(command, range)]); 4993 } 4994 }); 4995 4996 // "Return overrides." 4997 return overrides; 4998 } 4999 5000 function recordCurrentStatesAndValues(range) { 5001 // "Let overrides be a list of (string, string or boolean) ordered pairs, 5002 // initially empty." 5003 var overrides = []; 5004 5005 // "Let node be the first editable Text node effectively contained in the 5006 // active range, or null if there is none." 5007 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5008 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5009 })[0]; 5010 5011 // "If node is null, return overrides." 5012 if (!node) { 5013 return overrides; 5014 } 5015 5016 // "Add ("createLink", value for "createLink") to overrides." 5017 overrides.push(["createlink", commands.createlink.value(range)]); 5018 5019 // "For each command in the list "bold", "italic", "strikethrough", 5020 // "subscript", "superscript", "underline", in order: if node's effective 5021 // command value for command is one of its inline command activated values, 5022 // add (command, true) to overrides, and otherwise add (command, false) to 5023 // overrides." 5024 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 5025 if ($_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1) { 5026 overrides.push([command, true]); 5027 } else { 5028 overrides.push([command, false]); 5029 } 5030 }); 5031 5032 // "For each command in the list "fontName", "foreColor", "hiliteColor", in 5033 // order: add (command, command's value) to overrides." 5034 5035 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 5036 overrides.push([command, commands[command].value(range)]); 5037 }); 5038 5039 // "Add ("fontSize", node's effective command value for "fontSize") to 5040 // overrides." 5041 overrides.push(["fontsize", getEffectiveCommandValue(node, "fontsize")]); 5042 5043 // "Return overrides." 5044 return overrides; 5045 } 5046 5047 function restoreStatesAndValues(overrides, range) { 5048 var i; 5049 var command; 5050 var override; 5051 // "Let node be the first editable Text node effectively contained in the 5052 // active range, or null if there is none." 5053 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5054 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5055 })[0]; 5056 5057 function isEditableTextNode(node) { 5058 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5059 } 5060 5061 // "If node is not null, then for each (command, override) pair in 5062 // overrides, in order:" 5063 if (node) { 5064 5065 for (i = 0; i < overrides.length; i++) { 5066 command = overrides[i][0]; 5067 override = overrides[i][1]; 5068 5069 // "If override is a boolean, and queryCommandState(command) 5070 // returns something different from override, call 5071 // execCommand(command)." 5072 if (typeof override == "boolean" && myQueryCommandState(command, range) != override) { 5073 myExecCommand(command, false, override, range); 5074 5075 // "Otherwise, if override is a string, and command is not 5076 // "fontSize", and queryCommandValue(command) returns something not 5077 // equivalent to override, call execCommand(command, false, 5078 // override)." 5079 } else if (typeof override == "string" && command != "fontsize" && !areEquivalentValues(command, myQueryCommandValue(command, range), override)) { 5080 myExecCommand(command, false, override, range); 5081 5082 // "Otherwise, if override is a string; and command is "fontSize"; 5083 // and either there is a value override for "fontSize" that is not 5084 // equal to override, or there is no value override for "fontSize" 5085 // and node's effective command value for "fontSize" is not loosely 5086 // equivalent to override: call execCommand("fontSize", false, 5087 // override)." 5088 } else if (typeof override == "string" 5089 && command == "fontsize" 5090 && ((getValueOverride("fontsize", range) !== undefined 5091 && getValueOverride("fontsize", range) !== override) 5092 || (getValueOverride("fontsize", range) === undefined 5093 && !areLooselyEquivalentValues(command, getEffectiveCommandValue(node, "fontsize"), override)))) { 5094 myExecCommand("fontsize", false, override, range); 5095 5096 // "Otherwise, continue this loop from the beginning." 5097 } else { 5098 continue; 5099 } 5100 5101 // "Set node to the first editable Text node effectively contained 5102 // in the active range, if there is one." 5103 node = $_(getAllEffectivelyContainedNodes(range)).filter(isEditableTextNode)[0] || node; 5104 } 5105 5106 // "Otherwise, for each (command, override) pair in overrides, in order:" 5107 } else { 5108 for (i = 0; i < overrides.length; i++) { 5109 command = overrides[i][0]; 5110 override = overrides[i][1]; 5111 5112 // "If override is a boolean, set the state override for command to 5113 // override." 5114 if (typeof override == "boolean") { 5115 setStateOverride(command, override, range); 5116 } 5117 5118 // "If override is a string, set the value override for command to 5119 // override." 5120 if (typeof override == "string") { 5121 setValueOverride(command, override, range); 5122 } 5123 } 5124 } 5125 } 5126 5127 //@} 5128 ///// Canonical space sequences ///// 5129 //@{ 5130 5131 function canonicalSpaceSequence(n, nonBreakingStart, nonBreakingEnd) { 5132 // "If n is zero, return the empty string." 5133 if (n == 0) { 5134 return ""; 5135 } 5136 5137 // "If n is one and both non-breaking start and non-breaking end are false, 5138 // return a single space (U+0020)." 5139 if (n == 1 && !nonBreakingStart && !nonBreakingEnd) { 5140 return " "; 5141 } 5142 5143 // "If n is one, return a single non-breaking space (U+00A0)." 5144 if (n == 1) { 5145 return "\xa0"; 5146 } 5147 5148 // "Let buffer be the empty string." 5149 var buffer = ""; 5150 5151 // "If non-breaking start is true, let repeated pair be U+00A0 U+0020. 5152 // Otherwise, let it be U+0020 U+00A0." 5153 var repeatedPair; 5154 if (nonBreakingStart) { 5155 repeatedPair = "\xa0 "; 5156 } else { 5157 repeatedPair = " \xa0"; 5158 } 5159 5160 // "While n is greater than three, append repeated pair to buffer and 5161 // subtract two from n." 5162 while (n > 3) { 5163 buffer += repeatedPair; 5164 n -= 2; 5165 } 5166 5167 // "If n is three, append a three-element string to buffer depending on 5168 // non-breaking start and non-breaking end:" 5169 if (n == 3) { 5170 buffer += !nonBreakingStart && !nonBreakingEnd ? " \xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0\xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0 \xa0" : "impossible"; 5171 5172 // "Otherwise, append a two-element string to buffer depending on 5173 // non-breaking start and non-breaking end:" 5174 } else { 5175 buffer += !nonBreakingStart && !nonBreakingEnd ? "\xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0\xa0" : "impossible"; 5176 } 5177 5178 // "Return buffer." 5179 return buffer; 5180 } 5181 5182 function canonicalizeWhitespace(node, offset) { 5183 // "If node is neither editable nor an editing host, abort these steps." 5184 if (!isEditable(node) && !isEditingHost(node)) { 5185 return; 5186 } 5187 5188 // "Let start node equal node and let start offset equal offset." 5189 var startNode = node; 5190 var startOffset = offset; 5191 5192 // "Repeat the following steps:" 5193 while (true) { 5194 // "If start node has a child in the same editing host with index start 5195 // offset minus one, set start node to that child, then set start 5196 // offset to start node's length." 5197 if (0 <= startOffset - 1 && inSameEditingHost(startNode, startNode.childNodes[startOffset - 1])) { 5198 startNode = startNode.childNodes[startOffset - 1]; 5199 startOffset = getNodeLength(startNode); 5200 5201 // "Otherwise, if start offset is zero and start node does not follow a 5202 // line break and start node's parent is in the same editing host, set 5203 // start offset to start node's index, then set start node to its 5204 // parent." 5205 } else if (startOffset == 0 && !followsLineBreak(startNode) && inSameEditingHost(startNode, startNode.parentNode)) { 5206 startOffset = Dom.getIndexInParent(startNode); 5207 startNode = startNode.parentNode; 5208 5209 // "Otherwise, if start node is a Text node and its parent's resolved 5210 // value for "white-space" is neither "pre" nor "pre-wrap" and start 5211 // offset is not zero and the (start offset − 1)st element of start 5212 // node's data is a space (0x0020) or non-breaking space (0x00A0), 5213 // subtract one from start offset." 5214 } 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])) { 5215 startOffset--; 5216 5217 // "Otherwise, break from this loop." 5218 } else { 5219 break; 5220 } 5221 } 5222 5223 // "Let end node equal start node and end offset equal start offset." 5224 var endNode = startNode; 5225 var endOffset = startOffset; 5226 5227 // "Let length equal zero." 5228 var length = 0; 5229 5230 // "Let follows space be false." 5231 var followsSpace = false; 5232 5233 // "Repeat the following steps:" 5234 while (true) { 5235 // "If end node has a child in the same editing host with index end 5236 // offset, set end node to that child, then set end offset to zero." 5237 if (endOffset < endNode.childNodes.length && inSameEditingHost(endNode, endNode.childNodes[endOffset])) { 5238 endNode = endNode.childNodes[endOffset]; 5239 endOffset = 0; 5240 5241 // "Otherwise, if end offset is end node's length and end node does not 5242 // precede a line break and end node's parent is in the same editing 5243 // host, set end offset to one plus end node's index, then set end node 5244 // to its parent." 5245 } else if (endOffset == getNodeLength(endNode) && !precedesLineBreak(endNode) && inSameEditingHost(endNode, endNode.parentNode)) { 5246 endOffset = 1 + Dom.getIndexInParent(endNode); 5247 endNode = endNode.parentNode; 5248 5249 // "Otherwise, if end node is a Text node and its parent's resolved 5250 // value for "white-space" is neither "pre" nor "pre-wrap" and end 5251 // offset is not end node's length and the end offsetth element of 5252 // end node's data is a space (0x0020) or non-breaking space (0x00A0):" 5253 } 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])) { 5254 // "If follows space is true and the end offsetth element of end 5255 // node's data is a space (0x0020), call deleteData(end offset, 1) 5256 // on end node, then continue this loop from the beginning." 5257 if (followsSpace && " " == endNode.data[endOffset]) { 5258 endNode.deleteData(endOffset, 1); 5259 continue; 5260 } 5261 5262 // "Set follows space to true if the end offsetth element of end 5263 // node's data is a space (0x0020), false otherwise." 5264 followsSpace = " " == endNode.data[endOffset]; 5265 5266 // "Add one to end offset." 5267 endOffset++; 5268 5269 // "Add one to length." 5270 length++; 5271 5272 // "Otherwise, break from this loop." 5273 } else { 5274 break; 5275 } 5276 } 5277 5278 // "Let replacement whitespace be the canonical space sequence of length 5279 // length. non-breaking start is true if start offset is zero and start 5280 // node follows a line break, and false otherwise. non-breaking end is true 5281 // if end offset is end node's length and end node precedes a line break, 5282 // and false otherwise." 5283 var replacementWhitespace = canonicalSpaceSequence(length, startOffset == 0 && followsLineBreak(startNode), endOffset == getNodeLength(endNode) && precedesLineBreak(endNode)); 5284 5285 // "While (start node, start offset) is before (end node, end offset):" 5286 while (getPosition(startNode, startOffset, endNode, endOffset) == "before") { 5287 // "If start node has a child with index start offset, set start node 5288 // to that child, then set start offset to zero." 5289 if (startOffset < startNode.childNodes.length) { 5290 startNode = startNode.childNodes[startOffset]; 5291 startOffset = 0; 5292 5293 // "Otherwise, if start node is not a Text node or if start offset is 5294 // start node's length, set start offset to one plus start node's 5295 // index, then set start node to its parent." 5296 } else if (startNode.nodeType != $_.Node.TEXT_NODE || startOffset == getNodeLength(startNode)) { 5297 startOffset = 1 + Dom.getIndexInParent(startNode); 5298 startNode = startNode.parentNode; 5299 5300 // "Otherwise:" 5301 } else { 5302 // "Remove the first element from replacement whitespace, and let 5303 // element be that element." 5304 var element = replacementWhitespace[0]; 5305 replacementWhitespace = replacementWhitespace.slice(1); 5306 5307 // "If element is not the same as the start offsetth element of 5308 // start node's data:" 5309 if (element != startNode.data[startOffset]) { 5310 // "Call insertData(start offset, element) on start node." 5311 startNode.insertData(startOffset, element); 5312 5313 // "Call deleteData(start offset + 1, 1) on start node." 5314 startNode.deleteData(startOffset + 1, 1); 5315 } 5316 5317 // "Add one to start offset." 5318 startOffset++; 5319 } 5320 } 5321 } 5322 5323 //@} 5324 ///// Deleting the contents of a range ///// 5325 //@{ 5326 5327 function deleteContents(arg1, arg2, arg3, arg4, arg5) { 5328 // We accept several different calling conventions: 5329 // 5330 // 1) A single argument, which is a range. 5331 // 5332 // 2) Two arguments, the first being a range and the second flags. 5333 // 5334 // 3) Four arguments, the start and end of a range. 5335 // 5336 // 4) Five arguments, the start and end of a range plus flags. 5337 // 5338 // The flags argument is a dictionary that can have up to two keys, 5339 // blockMerging and stripWrappers, whose corresponding values are 5340 // interpreted as boolean. E.g., {stripWrappers: false}. 5341 var range; 5342 var flags = {}; 5343 var i; 5344 5345 if (arguments.length < 3) { 5346 range = arg1; 5347 } else { 5348 range = Aloha.createRange(); 5349 range.setStart(arg1, arg2); 5350 range.setEnd(arg3, arg4); 5351 } 5352 if (arguments.length == 2) { 5353 flags = arg2; 5354 } 5355 if (arguments.length == 5) { 5356 flags = arg5; 5357 } 5358 5359 var blockMerging = null != flags.blockMerging ? !!flags.blockMerging : true; 5360 var stripWrappers = null != flags.stripWrappers ? !!flags.stripWrappers : true; 5361 5362 // "If range is null, abort these steps and do nothing." 5363 if (!range) { 5364 return; 5365 } 5366 5367 // "Let start node, start offset, end node, and end offset be range's start 5368 // and end nodes and offsets." 5369 var startNode = range.startContainer; 5370 var startOffset = range.startOffset; 5371 var endNode = range.endContainer; 5372 var endOffset = range.endOffset; 5373 5374 var referenceNode; 5375 5376 // "While start node has at least one child:" 5377 while (startNode.hasChildNodes()) { 5378 // "If start offset is start node's length, and start node's parent is 5379 // in the same editing host, and start node is an inline node, set 5380 // start offset to one plus the index of start node, then set start 5381 // node to its parent and continue this loop from the beginning." 5382 if (startOffset == getNodeLength(startNode) && inSameEditingHost(startNode, startNode.parentNode) && isInlineNode(startNode)) { 5383 startOffset = 1 + Dom.getIndexInParent(startNode); 5384 startNode = startNode.parentNode; 5385 continue; 5386 } 5387 5388 // "If start offset is start node's length, break from this loop." 5389 if (startOffset == getNodeLength(startNode)) { 5390 break; 5391 } 5392 5393 // "Let reference node be the child of start node with index equal to 5394 // start offset." 5395 referenceNode = startNode.childNodes[startOffset]; 5396 5397 // "If reference node is a block node or an Element with no children, 5398 // or is neither an Element nor a Text node, break from this loop." 5399 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5400 break; 5401 } 5402 5403 // "Set start node to reference node and start offset to 0." 5404 startNode = referenceNode; 5405 startOffset = 0; 5406 } 5407 5408 // "While end node has at least one child:" 5409 while (endNode.hasChildNodes()) { 5410 // "If end offset is 0, and end node's parent is in the same editing 5411 // host, and end node is an inline node, set end offset to the index of 5412 // end node, then set end node to its parent and continue this loop 5413 // from the beginning." 5414 if (endOffset == 0 && inSameEditingHost(endNode, endNode.parentNode) && isInlineNode(endNode)) { 5415 endOffset = Dom.getIndexInParent(endNode); 5416 endNode = endNode.parentNode; 5417 continue; 5418 } 5419 5420 // "If end offset is 0, break from this loop." 5421 if (endOffset == 0) { 5422 break; 5423 } 5424 5425 // "Let reference node be the child of end node with index equal to end 5426 // offset minus one." 5427 referenceNode = endNode.childNodes[endOffset - 1]; 5428 5429 // "If reference node is a block node or an Element with no children, 5430 // or is neither an Element nor a Text node, break from this loop." 5431 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5432 break; 5433 } 5434 5435 // "Set end node to reference node and end offset to the length of 5436 // reference node." 5437 endNode = referenceNode; 5438 endOffset = getNodeLength(referenceNode); 5439 } 5440 5441 // "If (end node, end offset) is not after (start node, start offset), set 5442 // range's end to its start and abort these steps." 5443 if (getPosition(endNode, endOffset, startNode, startOffset) !== "after") { 5444 range.setEnd(range.startContainer, range.startOffset); 5445 return range; 5446 } 5447 5448 // "If start node is a Text node and start offset is 0, set start offset to 5449 // the index of start node, then set start node to its parent." 5450 // Commented out for unknown reason 5451 //if (startNode.nodeType == $_.Node.TEXT_NODE && startOffset == 0 && startNode != endNode) { 5452 // startOffset = Dom.getIndexInParent(startNode); 5453 // startNode = startNode.parentNode; 5454 //} 5455 5456 // "If end node is a Text node and end offset is its length, set end offset 5457 // to one plus the index of end node, then set end node to its parent." 5458 if (endNode.nodeType == $_.Node.TEXT_NODE && endOffset == getNodeLength(endNode) && startNode != endNode) { 5459 endOffset = 1 + Dom.getIndexInParent(endNode); 5460 endNode = endNode.parentNode; 5461 } 5462 5463 // "Set range's start to (start node, start offset) and its end to (end 5464 // node, end offset)." 5465 range.setStart(startNode, startOffset); 5466 range.setEnd(endNode, endOffset); 5467 5468 // "Let start block be the start node of range." 5469 var startBlock = range.startContainer; 5470 5471 // "While start block's parent is in the same editing host and start block 5472 // is an inline node, set start block to its parent." 5473 while (inSameEditingHost(startBlock, startBlock.parentNode) && isInlineNode(startBlock)) { 5474 startBlock = startBlock.parentNode; 5475 } 5476 5477 // "If start block is neither a block node nor an editing host, or "span" 5478 // is not an allowed child of start block, or start block is a td or th, 5479 // set start block to null." 5480 if ((!isBlockNode(startBlock) && !isEditingHost(startBlock)) || !isAllowedChild("span", startBlock) || isHtmlElementInArray(startBlock, ["td", "th"])) { 5481 startBlock = null; 5482 } 5483 5484 // "Let end block be the end node of range." 5485 var endBlock = range.endContainer; 5486 5487 // "While end block's parent is in the same editing host and end block is 5488 // an inline node, set end block to its parent." 5489 while (inSameEditingHost(endBlock, endBlock.parentNode) && isInlineNode(endBlock)) { 5490 endBlock = endBlock.parentNode; 5491 } 5492 5493 // "If end block is neither a block node nor an editing host, or "span" is 5494 // not an allowed child of end block, or end block is a td or th, set end 5495 // block to null." 5496 if ((!isBlockNode(endBlock) && !isEditingHost(endBlock)) || !isAllowedChild("span", endBlock) || isHtmlElementInArray(endBlock, ["td", "th"])) { 5497 endBlock = null; 5498 } 5499 5500 // "Record current states and values, and let overrides be the result." 5501 var overrides = recordCurrentStatesAndValues(range); 5502 var parent_; 5503 // "If start node and end node are the same, and start node is an editable 5504 // Text node:" 5505 if (startNode == endNode && isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5506 // "Let parent be the parent of node." 5507 parent_ = startNode.parentNode; 5508 5509 // "Call deleteData(start offset, end offset − start offset) on start 5510 // node." 5511 startNode.deleteData(startOffset, endOffset - startOffset); 5512 5513 // if deleting the text moved two spaces together, we replace the left one by a , which makes the two spaces a visible 5514 // two space sequence 5515 if (startOffset > 0 && startNode.data.substr(startOffset - 1, 1) === ' ' && startOffset < startNode.data.length && startNode.data.substr(startOffset, 1) === ' ') { 5516 startNode.replaceData(startOffset - 1, 1, '\xa0'); 5517 } 5518 5519 // "Canonicalize whitespace at (start node, start offset)." 5520 canonicalizeWhitespace(startNode, startOffset); 5521 5522 // "Set range's end to its start." 5523 // Ok, also set the range's start to its start, because modifying the text 5524 // might have somehow corrupted the range 5525 range.setStart(range.startContainer, range.startOffset); 5526 range.setEnd(range.startContainer, range.startOffset); 5527 5528 // "Restore states and values from overrides." 5529 restoreStatesAndValues(overrides, range); 5530 5531 // "If parent is editable or an editing host, is not an inline node, 5532 // and has no children, call createElement("br") on the context object 5533 // and append the result as the last child of parent." 5534 // only do this, if the offsetHeight is 0 5535 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5536 ensureContainerEditable(parent_); 5537 } 5538 5539 // "Abort these steps." 5540 return range; 5541 } 5542 5543 // "If start node is an editable Text node, call deleteData() on it, with 5544 // start offset as the first argument and (length of start node − start 5545 // offset) as the second argument." 5546 if (isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5547 startNode.deleteData(startOffset, getNodeLength(startNode) - startOffset); 5548 } 5549 5550 // "Let node list be a list of nodes, initially empty." 5551 // 5552 // "For each node contained in range, append node to node list if the last 5553 // member of node list (if any) is not an ancestor of node; node is 5554 // editable; and node is not a thead, tbody, tfoot, tr, th, or td." 5555 var nodeList = getContainedNodes( 5556 range, 5557 function (node) { 5558 return isEditable(node) && !isHtmlElementInArray(node, ["thead", "tbody", "tfoot", "tr", "th", "td"]); 5559 } 5560 ); 5561 5562 // "For each node in node list:" 5563 for (i = 0; i < nodeList.length; i++) { 5564 var node = nodeList[i]; 5565 5566 // "Let parent be the parent of node." 5567 parent_ = node.parentNode; 5568 5569 // "Remove node from parent." 5570 parent_.removeChild(node); 5571 5572 // "If strip wrappers is true or parent is not an ancestor container of 5573 // start node, while parent is an editable inline node with length 0, 5574 // let grandparent be the parent of parent, then remove parent from 5575 // grandparent, then set parent to grandparent." 5576 if (stripWrappers || (!isAncestor(parent_, startNode) && parent_ != startNode)) { 5577 while (isEditable(parent_) && isInlineNode(parent_) && getNodeLength(parent_) == 0) { 5578 var grandparent = parent_.parentNode; 5579 grandparent.removeChild(parent_); 5580 parent_ = grandparent; 5581 } 5582 } 5583 5584 // "If parent is editable or an editing host, is not an inline node, 5585 // and has no children, call createElement("br") on the context object 5586 // and append the result as the last child of parent." 5587 // only do this, if the offsetHeight is 0 5588 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5589 ensureContainerEditable(parent_); 5590 } 5591 } 5592 5593 // "If end node is an editable Text node, call deleteData(0, end offset) on 5594 // it." 5595 if (isEditable(endNode) && endNode.nodeType == $_.Node.TEXT_NODE) { 5596 endNode.deleteData(0, endOffset); 5597 } 5598 5599 // "Canonicalize whitespace at range's start." 5600 canonicalizeWhitespace(range.startContainer, range.startOffset); 5601 5602 // "Canonicalize whitespace at range's end." 5603 canonicalizeWhitespace(range.endContainer, range.endOffset); 5604 5605 // A reference to the position where a node is removed. 5606 var pos; 5607 5608 // "If block merging is false, or start block or end block is null, or 5609 // start block is not in the same editing host as end block, or start block 5610 5611 // and end block are the same:" 5612 if (!blockMerging || !startBlock || !endBlock || !inSameEditingHost(startBlock, endBlock) || startBlock == endBlock) { 5613 // "Set range's end to its start." 5614 range.setEnd(range.startContainer, range.startOffset); 5615 5616 // Calling delete on the give markup: 5617 // <editable><block><br>[]</block></editable> 5618 // should result in: 5619 // <editable>[]</editable> 5620 var block = startBlock || endBlock; 5621 if (isEmptyOnlyChildOfEditingHost(block)) { 5622 pos = removeNode(block); 5623 range.setStart(pos.node, pos.offset); 5624 range.setEnd(pos.node, pos.offset); 5625 } 5626 5627 // "Restore states and values from overrides." 5628 restoreStatesAndValues(overrides, range); 5629 5630 // "Abort these steps." 5631 return range; 5632 } 5633 5634 // "If start block has one child, which is a collapsed block prop, remove 5635 // its child from it." 5636 if (startBlock.children.length == 1 && isCollapsedBlockProp(startBlock.firstChild)) { 5637 startBlock.removeChild(startBlock.firstChild); 5638 } 5639 5640 // "If end block has one child, which is a collapsed block prop, remove its 5641 // child from it." 5642 if (endBlock.children.length == 1 && isCollapsedBlockProp(endBlock.firstChild)) { 5643 endBlock.removeChild(endBlock.firstChild); 5644 } 5645 5646 var values; 5647 // "If start block is an ancestor of end block:" 5648 if (isAncestor(startBlock, endBlock)) { 5649 // "Let reference node be end block." 5650 referenceNode = endBlock; 5651 5652 // "While reference node is not a child of start block, set reference 5653 // node to its parent." 5654 while (referenceNode.parentNode != startBlock) { 5655 referenceNode = referenceNode.parentNode; 5656 } 5657 5658 // "Set the start and end of range to (start block, index of reference 5659 // node)." 5660 range.setStart(startBlock, Dom.getIndexInParent(referenceNode)); 5661 range.setEnd(startBlock, Dom.getIndexInParent(referenceNode)); 5662 5663 // "If end block has no children:" 5664 if (!endBlock.hasChildNodes()) { 5665 // "While end block is editable and is the only child of its parent 5666 // and is not a child of start block, let parent equal end block, 5667 // then remove end block from parent, then set end block to 5668 // parent." 5669 while (isEditable(endBlock) && endBlock.parentNode.childNodes.length == 1 && endBlock.parentNode != startBlock) { 5670 parent_ = endBlock; 5671 parent_.removeChild(endBlock); 5672 endBlock = parent_; 5673 } 5674 5675 // "If end block is editable and is not an inline node, and its 5676 // previousSibling and nextSibling are both inline nodes, call 5677 // createElement("br") on the context object and insert it into end 5678 // block's parent immediately after end block." 5679 5680 if (isEditable(endBlock) && !isInlineNode(endBlock) && isInlineNode(endBlock.previousSibling) && isInlineNode(endBlock.nextSibling)) { 5681 endBlock.parentNode.insertBefore(document.createElement("br"), endBlock.nextSibling); 5682 } 5683 5684 // "If end block is editable, remove it from its parent." 5685 if (isEditable(endBlock)) { 5686 endBlock.parentNode.removeChild(endBlock); 5687 } 5688 5689 // "Restore states and values from overrides." 5690 restoreStatesAndValues(overrides, range); 5691 5692 // "Abort these steps." 5693 return range; 5694 } 5695 5696 // "If end block's firstChild is not an inline node, restore states and 5697 // values from overrides, then abort these steps." 5698 if (!isInlineNode(endBlock.firstChild)) { 5699 restoreStatesAndValues(overrides, range); 5700 return range; 5701 } 5702 5703 // "Let children be a list of nodes, initially empty." 5704 var children = []; 5705 5706 // "Append the first child of end block to children." 5707 children.push(endBlock.firstChild); 5708 5709 // "While children's last member is not a br, and children's last 5710 // member's nextSibling is an inline node, append children's last 5711 // member's nextSibling to children." 5712 while (!isNamedHtmlElement(children[children.length - 1], "br") && isInlineNode(children[children.length - 1].nextSibling)) { 5713 children.push(children[children.length - 1].nextSibling); 5714 } 5715 5716 // "Record the values of children, and let values be the result." 5717 values = recordValues(children); 5718 5719 // "While children's first member's parent is not start block, split 5720 // the parent of children." 5721 while (children[0].parentNode != startBlock) { 5722 splitParent(children, range); 5723 } 5724 5725 // "If children's first member's previousSibling is an editable br, 5726 // remove that br from its parent." 5727 if (isEditable(children[0].previousSibling) && isNamedHtmlElement(children[0].previousSibling, "br")) { 5728 children[0].parentNode.removeChild(children[0].previousSibling); 5729 } 5730 5731 // "Otherwise, if start block is a descendant of end block:" 5732 } else if (isDescendant(startBlock, endBlock)) { 5733 // "Set the start and end of range to (start block, length of start 5734 // block)." 5735 range.setStart(startBlock, getNodeLength(startBlock)); 5736 range.setEnd(startBlock, getNodeLength(startBlock)); 5737 5738 // "Let reference node be start block." 5739 referenceNode = startBlock; 5740 5741 // "While reference node is not a child of end block, set reference 5742 // node to its parent." 5743 while (referenceNode.parentNode != endBlock) { 5744 referenceNode = referenceNode.parentNode; 5745 } 5746 5747 // "If reference node's nextSibling is an inline node and start block's 5748 // lastChild is a br, remove start block's lastChild from it." 5749 if (isInlineNode(referenceNode.nextSibling) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5750 startBlock.removeChild(startBlock.lastChild); 5751 } 5752 5753 // "Let nodes to move be a list of nodes, initially empty." 5754 var nodesToMove = []; 5755 5756 // "If reference node's nextSibling is neither null nor a br nor a 5757 // block node, append it to nodes to move." 5758 if (referenceNode.nextSibling && !isNamedHtmlElement(referenceNode.nextSibling, "br") && !isBlockNode(referenceNode.nextSibling)) { 5759 nodesToMove.push(referenceNode.nextSibling); 5760 } 5761 5762 // "While nodes to move is nonempty and its last member's nextSibling 5763 // is neither null nor a br nor a block node, append it to nodes to 5764 // move." 5765 if (nodesToMove.length && nodesToMove[nodesToMove.length - 1].nextSibling && !isNamedHtmlElement(nodesToMove[nodesToMove.length - 1].nextSibling, "br") && !isBlockNode(nodesToMove[nodesToMove.length - 1].nextSibling)) { 5766 nodesToMove.push(nodesToMove[nodesToMove.length - 1].nextSibling); 5767 } 5768 5769 // "Record the values of nodes to move, and let values be the result." 5770 values = recordValues(nodesToMove); 5771 5772 // "For each node in nodes to move, append node as the last child of 5773 // start block, preserving ranges." 5774 $_(nodesToMove).forEach(function (node) { 5775 movePreservingRanges(node, startBlock, -1, range); 5776 }); 5777 5778 // "If the nextSibling of reference node is a br, remove it from its 5779 // parent." 5780 if (isNamedHtmlElement(referenceNode.nextSibling, "br")) { 5781 referenceNode.parentNode.removeChild(referenceNode.nextSibling); 5782 } 5783 5784 // "Otherwise:" 5785 } else { 5786 // "Set the start and end of range to (start block, length of start 5787 // block)." 5788 range.setStart(startBlock, getNodeLength(startBlock)); 5789 range.setEnd(startBlock, getNodeLength(startBlock)); 5790 5791 // "If end block's firstChild is an inline node and start block's 5792 // lastChild is a br, remove start block's lastChild from it." 5793 if (isInlineNode(endBlock.firstChild) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5794 startBlock.removeChild(startBlock.lastChild); 5795 } 5796 5797 // "Record the values of end block's children, and let values be the 5798 // result." 5799 values = recordValues([].slice.call(toArray(endBlock.childNodes))); 5800 5801 // "While end block has children, append the first child of end block 5802 // to start block, preserving ranges." 5803 while (endBlock.hasChildNodes()) { 5804 movePreservingRanges(endBlock.firstChild, startBlock, -1, range); 5805 } 5806 5807 // "While end block has no children, let parent be the parent of end 5808 5809 // block, then remove end block from parent, then set end block to 5810 // parent." 5811 while (!endBlock.hasChildNodes()) { 5812 parent_ = endBlock.parentNode; 5813 parent_.removeChild(endBlock); 5814 endBlock = parent_; 5815 } 5816 } 5817 5818 // "Restore the values from values." 5819 restoreValues(values, range); 5820 5821 // Because otherwise calling deleteContents() with the given selection: 5822 // 5823 // <editable><block>[foo</block><block>bar]</block></editable> 5824 // 5825 // would result in: 5826 // 5827 // <editable><block>[]<br /></block></editable> 5828 // 5829 // instead of: 5830 // 5831 // <editable>[]</editable> 5832 // 5833 // Therefore, the below makes it possible to completely empty contents 5834 // of editing hosts via operations like CTRL+A, DEL. 5835 // 5836 // If startBlock is empty, and startBlock is the immediate and only 5837 // child of its parent editing host, then remove startBlock and collapse 5838 // the selection at the beginning of the editing post. 5839 if (isEmptyOnlyChildOfEditingHost(startBlock)) { 5840 pos = removeNode(startBlock); 5841 range.setStart(pos.node, pos.offset); 5842 range.setEnd(pos.node, pos.offset); 5843 startBlock = pos.node; 5844 } 5845 5846 // "If start block has no children, call createElement("br") on the context 5847 // object and append the result as the last child of start block." 5848 ensureContainerEditable(startBlock); 5849 5850 // "Restore states and values from overrides." 5851 restoreStatesAndValues(overrides, range); 5852 5853 return range; 5854 } 5855 5856 // "To remove a node node while preserving its descendants, split the parent of 5857 // node's children if it has any. If it has no children, instead remove it from 5858 // its parent." 5859 function removePreservingDescendants(node, range) { 5860 if (node.hasChildNodes()) { 5861 splitParent([].slice.call(toArray(node.childNodes)), range); 5862 } else { 5863 node.parentNode.removeChild(node); 5864 } 5865 } 5866 5867 //@} 5868 ///// Indenting and outdenting ///// 5869 //@{ 5870 5871 function cleanLists(node, range) { 5872 // remove any whitespace nodes around list nodes 5873 if (node) { 5874 jQuery(node).find('ul,ol,li').each(function () { 5875 jQuery(this).contents().each(function () { 5876 if (isWhitespaceNode(this)) { 5877 var index = Dom.getIndexInParent(this); 5878 5879 // if the range points to somewhere behind the removed text node, we reduce the offset 5880 if (range.startContainer === this.parentNode && range.startOffset > index) { 5881 range.startOffset--; 5882 } else if (range.startContainer === this) { 5883 // the range starts in the removed text node, let it start right before 5884 range.startContainer = this.parentNode; 5885 range.startOffset = index; 5886 } 5887 // same thing for end of the range 5888 if (range.endContainer === this.parentNode && range.endOffset > index) { 5889 range.endOffset--; 5890 } else if (range.endContainer === this) { 5891 range.endContainer = this.parentNode; 5892 range.endOffset = index; 5893 } 5894 // finally remove the whitespace node 5895 jQuery(this).remove(); 5896 } 5897 }); 5898 }); 5899 } 5900 } 5901 5902 5903 //@} 5904 ///// Indenting and outdenting ///// 5905 //@{ 5906 5907 function indentNodes(nodeList, range) { 5908 // "If node list is empty, do nothing and abort these steps." 5909 if (!nodeList.length) { 5910 return; 5911 } 5912 5913 // "Let first node be the first member of node list." 5914 var firstNode = nodeList[0]; 5915 5916 // "If first node's parent is an ol or ul:" 5917 if (isHtmlElementInArray(firstNode.parentNode, ["OL", "UL"])) { 5918 // "Let tag be the local name of the parent of first node." 5919 var tag = firstNode.parentNode.tagName; 5920 5921 // "Wrap node list, with sibling criteria returning true for an HTML 5922 // element with local name tag and false otherwise, and new parent 5923 // instructions returning the result of calling createElement(tag) on 5924 // the ownerDocument of first node." 5925 wrap( 5926 nodeList, 5927 function (node) { 5928 return isHtmlElement_obsolete(node, tag); 5929 }, 5930 function () { 5931 return firstNode.ownerDocument.createElement(tag); 5932 }, 5933 range 5934 ); 5935 5936 // "Abort these steps." 5937 return; 5938 } 5939 5940 // "Wrap node list, with sibling criteria returning true for a simple 5941 // indentation element and false otherwise, and new parent instructions 5942 // returning the result of calling createElement("blockquote") on the 5943 // ownerDocument of first node. Let new parent be the result." 5944 var newParent = wrap( 5945 nodeList, 5946 function (node) { 5947 return isSimpleIndentationElement(node); 5948 }, 5949 function () { 5950 return firstNode.ownerDocument.createElement("blockquote"); 5951 }, 5952 range 5953 ); 5954 5955 // "Fix disallowed ancestors of new parent." 5956 fixDisallowedAncestors(newParent, range); 5957 } 5958 5959 function outdentNode(node, range) { 5960 // "If node is not editable, abort these steps." 5961 if (!isEditable(node)) { 5962 return; 5963 } 5964 5965 // "If node is a simple indentation element, remove node, preserving its 5966 // descendants. Then abort these steps." 5967 if (isSimpleIndentationElement(node)) { 5968 removePreservingDescendants(node, range); 5969 return; 5970 } 5971 5972 // "If node is an indentation element:" 5973 if (isIndentationElement(node)) { 5974 // "Unset the class and dir attributes of node, if any." 5975 node.removeAttribute("class"); 5976 node.removeAttribute("dir"); 5977 5978 // "Unset the margin, padding, and border CSS properties of node." 5979 node.style.margin = ""; 5980 node.style.padding = ""; 5981 node.style.border = ""; 5982 if (node.getAttribute("style") == "") { 5983 node.removeAttribute("style"); 5984 } 5985 5986 // "Set the tag name of node to "div"." 5987 setTagName(node, "div", range); 5988 5989 // "Abort these steps." 5990 return; 5991 } 5992 5993 // "Let current ancestor be node's parent." 5994 var currentAncestor = node.parentNode; 5995 5996 // "Let ancestor list be a list of nodes, initially empty." 5997 var ancestorList = []; 5998 5999 // "While current ancestor is an editable Element that is neither a simple 6000 6001 // indentation element nor an ol nor a ul, append current ancestor to 6002 // ancestor list and then set current ancestor to its parent." 6003 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isSimpleIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6004 ancestorList.push(currentAncestor); 6005 currentAncestor = currentAncestor.parentNode; 6006 } 6007 6008 // "If current ancestor is not an editable simple indentation element:" 6009 if (!isEditable(currentAncestor) || !isSimpleIndentationElement(currentAncestor)) { 6010 // "Let current ancestor be node's parent." 6011 currentAncestor = node.parentNode; 6012 6013 // "Let ancestor list be the empty list." 6014 ancestorList = []; 6015 6016 // "While current ancestor is an editable Element that is neither an 6017 // indentation element nor an ol nor a ul, append current ancestor to 6018 // ancestor list and then set current ancestor to its parent." 6019 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6020 ancestorList.push(currentAncestor); 6021 currentAncestor = currentAncestor.parentNode; 6022 } 6023 } 6024 6025 // "If node is an ol or ul and current ancestor is not an editable 6026 // indentation element:" 6027 if (isHtmlElementInArray(node, ["OL", "UL"]) && (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor))) { 6028 // "Unset the reversed, start, and type attributes of node, if any are 6029 // set." 6030 node.removeAttribute("reversed"); 6031 node.removeAttribute("start"); 6032 node.removeAttribute("type"); 6033 6034 // "Let children be the children of node." 6035 var children = [].slice.call(toArray(node.childNodes)); 6036 6037 // "If node has attributes, and its parent is not an ol or ul, set the 6038 // tag name of node to "div"." 6039 if (node.attributes.length && !isHtmlElementInArray(node.parentNode, ["OL", "UL"])) { 6040 setTagName(node, "div", range); 6041 6042 // "Otherwise:" 6043 } else { 6044 // "Record the values of node's children, and let values be the 6045 // result." 6046 var values = recordValues([].slice.call(toArray(node.childNodes))); 6047 6048 // "Remove node, preserving its descendants." 6049 6050 removePreservingDescendants(node, range); 6051 6052 // "Restore the values from values." 6053 restoreValues(values, range); 6054 } 6055 6056 // "Fix disallowed ancestors of each member of children." 6057 var i; 6058 for (i = 0; i < children.length; i++) { 6059 fixDisallowedAncestors(children[i], range); 6060 } 6061 6062 // "Abort these steps." 6063 return; 6064 } 6065 6066 // "If current ancestor is not an editable indentation element, abort these 6067 // steps." 6068 if (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor)) { 6069 return; 6070 } 6071 6072 // "Append current ancestor to ancestor list." 6073 ancestorList.push(currentAncestor); 6074 6075 // "Let original ancestor be current ancestor." 6076 var originalAncestor = currentAncestor; 6077 6078 // "While ancestor list is not empty:" 6079 while (ancestorList.length) { 6080 // "Let current ancestor be the last member of ancestor list." 6081 // 6082 // "Remove the last member of ancestor list." 6083 currentAncestor = ancestorList.pop(); 6084 6085 // "Let target be the child of current ancestor that is equal to either 6086 // node or the last member of ancestor list." 6087 var target = node.parentNode == currentAncestor ? node : ancestorList[ancestorList.length - 1]; 6088 6089 // "If target is an inline node that is not a br, and its nextSibling 6090 // is a br, remove target's nextSibling from its parent." 6091 if (isInlineNode(target) && !isNamedHtmlElement(target, 'BR') && isNamedHtmlElement(target.nextSibling, "BR")) { 6092 target.parentNode.removeChild(target.nextSibling); 6093 } 6094 6095 // "Let preceding siblings be the preceding siblings of target, and let 6096 // following siblings be the following siblings of target." 6097 var precedingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 0, Dom.getIndexInParent(target)); 6098 var followingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 1 + Dom.getIndexInParent(target)); 6099 6100 // "Indent preceding siblings." 6101 indentNodes(precedingSiblings, range); 6102 6103 // "Indent following siblings." 6104 indentNodes(followingSiblings, range); 6105 } 6106 6107 // "Outdent original ancestor." 6108 outdentNode(originalAncestor, range); 6109 } 6110 6111 6112 //@} 6113 ///// Toggling lists ///// 6114 //@{ 6115 6116 function toggleLists(tagName, range) { 6117 // "Let mode be "disable" if the selection's list state is tag name, and 6118 // "enable" otherwise." 6119 var mode = getSelectionListState() == tagName ? "disable" : "enable"; 6120 6121 tagName = tagName.toUpperCase(); 6122 6123 // "Let other tag name be "ol" if tag name is "ul", and "ul" if tag name is 6124 // "ol"." 6125 var otherTagName = tagName == "OL" ? "UL" : "OL"; 6126 6127 // "Let items be a list of all lis that are ancestor containers of the 6128 // range's start and/or end node." 6129 // 6130 // It's annoying to get this in tree order using functional stuff without 6131 // doing getDescendants(document), which is slow, so I do it imperatively. 6132 var items = []; 6133 (function () { 6134 var ancestorContainer; 6135 for (ancestorContainer = range.endContainer; 6136 ancestorContainer != range.commonAncestorContainer; 6137 ancestorContainer = ancestorContainer.parentNode) { 6138 if (isNamedHtmlElement(ancestorContainer, "li")) { 6139 items.unshift(ancestorContainer); 6140 } 6141 } 6142 for (ancestorContainer = range.startContainer; 6143 ancestorContainer; 6144 ancestorContainer = ancestorContainer.parentNode) { 6145 if (isNamedHtmlElement(ancestorContainer, "li")) { 6146 items.unshift(ancestorContainer); 6147 } 6148 } 6149 }()); 6150 6151 // "For each item in items, normalize sublists of item." 6152 $_(items).forEach(function (thisArg) { 6153 normalizeSublists(thisArg, range); 6154 }); 6155 6156 // "Block-extend the range, and let new range be the result." 6157 var newRange = blockExtend(range); 6158 6159 // "If mode is "enable", then let lists to convert consist of every 6160 // editable HTML element with local name other tag name that is contained 6161 // in new range, and for every list in lists to convert:" 6162 if (mode == "enable") { 6163 $_(getAllContainedNodes(newRange, function (node) { 6164 return isEditable(node) && isHtmlElement_obsolete(node, otherTagName); 6165 })).forEach(function (list) { 6166 // "If list's previousSibling or nextSibling is an editable HTML 6167 // element with local name tag name:" 6168 if ((isEditable(list.previousSibling) && isHtmlElement_obsolete(list.previousSibling, tagName)) || (isEditable(list.nextSibling) && isHtmlElement_obsolete(list.nextSibling, tagName))) { 6169 // "Let children be list's children." 6170 var children = [].slice.call(toArray(list.childNodes)); 6171 6172 // "Record the values of children, and let values be the 6173 // result." 6174 var values = recordValues(children); 6175 6176 // "Split the parent of children." 6177 splitParent(children, range); 6178 6179 // "Wrap children, with sibling criteria returning true for an 6180 // HTML element with local name tag name and false otherwise." 6181 wrap( 6182 children, 6183 function (node) { 6184 return isHtmlElement_obsolete(node, tagName); 6185 }, 6186 function () { 6187 return null; 6188 }, 6189 range 6190 ); 6191 6192 // "Restore the values from values." 6193 restoreValues(values, range); 6194 6195 // "Otherwise, set the tag name of list to tag name." 6196 } else { 6197 setTagName(list, tagName, range); 6198 } 6199 }); 6200 } 6201 6202 // "Let node list be a list of nodes, initially empty." 6203 // 6204 // "For each node node contained in new range, if node is editable; the 6205 // last member of node list (if any) is not an ancestor of node; node 6206 // is not an indentation element; and either node is an ol or ul, or its 6207 // parent is an ol or ul, or it is an allowed child of "li"; then append 6208 // node to node list." 6209 var nodeList = getContainedNodes(newRange, function (node) { 6210 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["OL", "UL"]) || isHtmlElementInArray(node.parentNode, ["OL", "UL"]) || isAllowedChild(node, "li")); 6211 }); 6212 6213 // "If mode is "enable", remove from node list any ol or ul whose parent is 6214 // not also an ol or ul." 6215 if (mode == "enable") { 6216 nodeList = $_(nodeList).filter(function (node) { 6217 return !isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]); 6218 }); 6219 } 6220 6221 // "If mode is "disable", then while node list is not empty:" 6222 var sublist, values; 6223 6224 function createLi() { 6225 return document.createElement("li"); 6226 } 6227 6228 function isOlUl(node) { 6229 return isHtmlElementInArray(node, ["ol", "ul"]); 6230 } 6231 6232 function makeIsElementPred(tagName) { 6233 return function (node) { 6234 return isHtmlElement_obsolete(node, tagName); 6235 }; 6236 } 6237 6238 function makeCreateElement(tagName) { 6239 return function () { 6240 return document.createElement(tagName); 6241 }; 6242 } 6243 6244 function makeCreateElementSublist(tagName, sublist, range) { 6245 return function () { 6246 // "If sublist's first member's parent is not an editable 6247 // simple indentation element, or sublist's first member's 6248 // parent's previousSibling is not an editable HTML element 6249 // with local name tag name, call createElement(tag name) 6250 // on the context object and return the result." 6251 if (!isEditable(sublist[0].parentNode) || !isSimpleIndentationElement(sublist[0].parentNode) || !isEditable(sublist[0].parentNode.previousSibling) || !isHtmlElement_obsolete(sublist[0].parentNode.previousSibling, tagName)) { 6252 return document.createElement(tagName); 6253 } 6254 6255 // "Let list be sublist's first member's parent's 6256 // previousSibling." 6257 var list = sublist[0].parentNode.previousSibling; 6258 6259 // "Normalize sublists of list's lastChild." 6260 normalizeSublists(list.lastChild, range); 6261 6262 // "If list's lastChild is not an editable HTML element 6263 6264 // with local name tag name, call createElement(tag name) 6265 // on the context object, and append the result as the last 6266 // child of list." 6267 if (!isEditable(list.lastChild) || !isHtmlElement_obsolete(list.lastChild, tagName)) { 6268 list.appendChild(document.createElement(tagName)); 6269 } 6270 6271 // "Return the last child of list." 6272 return list.lastChild; 6273 }; 6274 } 6275 6276 if (mode == "disable") { 6277 while (nodeList.length) { 6278 // "Let sublist be an empty list of nodes." 6279 sublist = []; 6280 6281 // "Remove the first member from node list and append it to 6282 // sublist." 6283 sublist.push(nodeList.shift()); 6284 6285 // "If the first member of sublist is an HTML element with local 6286 // name tag name, outdent it and continue this loop from the 6287 // beginning." 6288 if (isHtmlElement_obsolete(sublist[0], tagName)) { 6289 outdentNode(sublist[0], range); 6290 continue; 6291 } 6292 6293 // "While node list is not empty, and the first member of node list 6294 // is the nextSibling of the last member of sublist and is not an 6295 // HTML element with local name tag name, remove the first member 6296 // from node list and append it to sublist." 6297 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElement_obsolete(nodeList[0], tagName)) { 6298 sublist.push(nodeList.shift()); 6299 } 6300 6301 // "Record the values of sublist, and let values be the result." 6302 values = recordValues(sublist); 6303 6304 // "Split the parent of sublist." 6305 splitParent(sublist, range); 6306 6307 // "Fix disallowed ancestors of each member of sublist." 6308 var i; 6309 for (i = 0; i < sublist.length; i++) { 6310 fixDisallowedAncestors(sublist[i], range); 6311 } 6312 6313 // "Restore the values from values." 6314 restoreValues(values, range); 6315 } 6316 6317 // "Otherwise, while node list is not empty:" 6318 } else { 6319 while (nodeList.length) { 6320 // "Let sublist be an empty list of nodes." 6321 sublist = []; 6322 6323 // "While either sublist is empty, or node list is not empty and 6324 // its first member is the nextSibling of sublist's last member:" 6325 while (!sublist.length || (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling)) { 6326 // "If node list's first member is a p or div, set the tag name 6327 // of node list's first member to "li", and append the result 6328 // to sublist. Remove the first member from node list." 6329 if (isHtmlElementInArray(nodeList[0], ["p", "div"])) { 6330 sublist.push(setTagName(nodeList[0], "li", range)); 6331 nodeList.shift(); 6332 6333 // "Otherwise, if the first member of node list is an li or ol 6334 // or ul, remove it from node list and append it to sublist." 6335 } else if (isHtmlElementInArray(nodeList[0], ["li", "ol", "ul"])) { 6336 sublist.push(nodeList.shift()); 6337 6338 // "Otherwise:" 6339 } else { 6340 // "Let nodes to wrap be a list of nodes, initially empty." 6341 var nodesToWrap = []; 6342 6343 // "While nodes to wrap is empty, or node list is not empty 6344 // and its first member is the nextSibling of nodes to 6345 // wrap's last member and the first member of node list is 6346 // an inline node and the last member of nodes to wrap is 6347 // an inline node other than a br, remove the first member 6348 // from node list and append it to nodes to wrap." 6349 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"))) { 6350 nodesToWrap.push(nodeList.shift()); 6351 } 6352 6353 // "Wrap nodes to wrap, with new parent instructions 6354 // returning the result of calling createElement("li") on 6355 // the context object. Append the result to sublist." 6356 sublist.push(wrap( 6357 nodesToWrap, 6358 undefined, 6359 createLi, 6360 range 6361 )); 6362 } 6363 } 6364 6365 // "If sublist's first member's parent is an HTML element with 6366 // local name tag name, or if every member of sublist is an ol or 6367 // ul, continue this loop from the beginning." 6368 if (isHtmlElement_obsolete(sublist[0].parentNode, tagName) || $_(sublist).every(isOlUl)) { 6369 continue; 6370 } 6371 6372 // "If sublist's first member's parent is an HTML element with 6373 // local name other tag name:" 6374 if (isHtmlElement_obsolete(sublist[0].parentNode, otherTagName)) { 6375 // "Record the values of sublist, and let values be the 6376 // result." 6377 values = recordValues(sublist); 6378 6379 // "Split the parent of sublist." 6380 splitParent(sublist, range); 6381 6382 // "Wrap sublist, with sibling criteria returning true for an 6383 // HTML element with local name tag name and false otherwise, 6384 // and new parent instructions returning the result of calling 6385 // createElement(tag name) on the context object." 6386 wrap( 6387 sublist, 6388 makeIsElementPred(tagName), 6389 makeCreateElement(tagName), 6390 range 6391 ); 6392 6393 // "Restore the values from values." 6394 restoreValues(values, range); 6395 6396 // "Continue this loop from the beginning." 6397 continue; 6398 } 6399 6400 // "Wrap sublist, with sibling criteria returning true for an HTML 6401 // element with local name tag name and false otherwise, and new 6402 // parent instructions being the following:" 6403 // . . . 6404 // "Fix disallowed ancestors of the previous step's result." 6405 fixDisallowedAncestors(wrap( 6406 sublist, 6407 makeIsElementPred(tagName), 6408 makeCreateElementSublist(tagName, sublist, range), 6409 range 6410 ), range); 6411 } 6412 } 6413 } 6414 6415 6416 //@} 6417 ///// Justifying the selection ///// 6418 //@{ 6419 6420 function justifySelection(alignment, range) { 6421 6422 // "Block-extend the active range, and let new range be the result." 6423 var newRange = blockExtend(range); 6424 6425 // "Let element list be a list of all editable Elements contained in new 6426 // range that either has an attribute in the HTML namespace whose local 6427 // name is "align", or has a style attribute that sets "text-align", or is 6428 // a center." 6429 var elementList = getAllContainedNodes(newRange, function (node) { 6430 return node.nodeType == $_.Node.ELEMENT_NODE && isEditable(node) 6431 // Ignoring namespaces here 6432 && (hasAttribute(node, "align") || node.style.textAlign != "" || isNamedHtmlElement(node, 'center')); 6433 }); 6434 6435 // "For each element in element list:" 6436 var i; 6437 for (i = 0; i < elementList.length; i++) { 6438 var element = elementList[i]; 6439 6440 // "If element has an attribute in the HTML namespace whose local name 6441 // is "align", remove that attribute." 6442 element.removeAttribute("align"); 6443 6444 // "Unset the CSS property "text-align" on element, if it's set by a 6445 // style attribute." 6446 element.style.textAlign = ""; 6447 if (element.getAttribute("style") == "") { 6448 element.removeAttribute("style"); 6449 } 6450 6451 // "If element is a div or span or center with no attributes, remove 6452 // it, preserving its descendants." 6453 if (isHtmlElementInArray(element, ["div", "span", "center"]) && !element.attributes.length) { 6454 removePreservingDescendants(element, range); 6455 } 6456 6457 // "If element is a center with one or more attributes, set the tag 6458 // name of element to "div"." 6459 if (isNamedHtmlElement(element, 'center') && element.attributes.length) { 6460 setTagName(element, "div", range); 6461 } 6462 } 6463 6464 // "Block-extend the active range, and let new range be the result." 6465 newRange = blockExtend(globalRange); 6466 6467 // "Let node list be a list of nodes, initially empty." 6468 var nodeList = []; 6469 6470 // "For each node node contained in new range, append node to node list if 6471 // the last member of node list (if any) is not an ancestor of node; node 6472 // is editable; node is an allowed child of "div"; and node's alignment 6473 // value is not alignment." 6474 nodeList = getContainedNodes(newRange, function (node) { 6475 return isEditable(node) && isAllowedChild(node, "div") && getAlignmentValue(node) != alignment; 6476 }); 6477 6478 function makeIsAlignedDiv(alignment) { 6479 return function (node) { 6480 return isNamedHtmlElement(node, 'div') && $_(node.attributes).every(function (attr) { 6481 return (attr.name == "align" && attr.value.toLowerCase() == alignment) || (attr.name == "style" && getStyleLength(node) == 1 && node.style.textAlign == alignment); 6482 }); 6483 }; 6484 } 6485 6486 function makeCreateAlignedDiv(alignment) { 6487 return function () { 6488 var newParent = document.createElement("div"); 6489 newParent.setAttribute("style", "text-align: " + alignment); 6490 return newParent; 6491 }; 6492 } 6493 6494 // "While node list is not empty:" 6495 while (nodeList.length) { 6496 // "Let sublist be a list of nodes, initially empty." 6497 var sublist = []; 6498 6499 // "Remove the first member of node list and append it to sublist." 6500 sublist.push(nodeList.shift()); 6501 6502 // "While node list is not empty, and the first member of node list is 6503 // the nextSibling of the last member of sublist, remove the first 6504 // member of node list and append it to sublist." 6505 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 6506 sublist.push(nodeList.shift()); 6507 } 6508 6509 // "Wrap sublist. Sibling criteria returns true for any div that has 6510 // one or both of the following two attributes and no other attributes, 6511 // and false otherwise:" 6512 // 6513 // * "An align attribute whose value is an ASCII case-insensitive 6514 // match for alignment. 6515 // * "A style attribute which sets exactly one CSS property 6516 // (including unrecognized or invalid attributes), which is 6517 // "text-align", which is set to alignment. 6518 // 6519 // "New parent instructions are to call createElement("div") on the 6520 // context object, then set its CSS property "text-align" to alignment 6521 // and return the result." 6522 wrap( 6523 sublist, 6524 makeIsAlignedDiv(alignment), 6525 makeCreateAlignedDiv(alignment), 6526 range 6527 ); 6528 } 6529 } 6530 6531 //@} 6532 ///// Move the given collapsed range over adjacent zero-width whitespace characters. 6533 ///// The range is 6534 //@{ 6535 /** 6536 * Move the given collapsed range over adjacent zero-width whitespace characters. 6537 * If the range is not collapsed or is not contained in a text node, it is not modified 6538 * @param range range to modify 6539 * @param forward {Boolean} true to move forward, false to move backward 6540 */ 6541 function moveOverZWSP(range, forward) { 6542 var offset; 6543 if (!range.collapsed) { 6544 return; 6545 } 6546 6547 offset = range.startOffset; 6548 6549 if (forward) { 6550 // check whether the range starts in a text node 6551 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6552 // move forward (i.e. increase offset) as long as we stay in the text node and have zwsp characters to the right 6553 while (offset < range.startContainer.data.length && range.startContainer.data.charAt(offset) === '\u200b') { 6554 offset++; 6555 } 6556 6557 } 6558 } else { 6559 // check whether the range starts in a text node 6560 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6561 // move backward (i.e. decrease offset) as long as we stay in the text node and have zwsp characters to the left 6562 while (offset > 0 && range.startContainer.data.charAt(offset - 1) === '\u200b') { 6563 offset--; 6564 } 6565 } 6566 } 6567 6568 // if the offset was changed, set it back to the collapsed range 6569 if (offset !== range.startOffset) { 6570 range.setStart(range.startContainer, offset); 6571 range.setEnd(range.startContainer, offset); 6572 } 6573 } 6574 6575 /** 6576 * implementation of the delete command 6577 * will attempt to delete contents within range if non-collapsed 6578 * or delete the character left of the cursor position if range 6579 * is collapsed. Is used to define the behaviour of the backspace 6580 * button. 6581 * 6582 * @param value is just there for compatibility with the commands api. parameter is ignored. 6583 * @param range the range to execute the delete command for 6584 * @return void 6585 */ 6586 commands["delete"] = { 6587 action: function (value, range) { 6588 var i; 6589 6590 // special behaviour for skipping zero-width whitespaces in IE7 6591 if (jQuery.browser.msie && jQuery.browser.version <= 7) { 6592 moveOverZWSP(range, false); 6593 } 6594 6595 // "If the active range is not collapsed, delete the contents of the 6596 // active range and abort these steps." 6597 if (!range.collapsed) { 6598 deleteContents(range); 6599 return; 6600 } 6601 6602 // "Canonicalize whitespace at (active range's start node, active 6603 // range's start offset)." 6604 canonicalizeWhitespace(range.startContainer, range.startOffset); 6605 6606 // "Let node and offset be the active range's start node and offset." 6607 var node = range.startContainer; 6608 var offset = range.startOffset; 6609 var isBr = false; 6610 var isHr = false; 6611 6612 // "Repeat the following steps:" 6613 while (true) { 6614 // we need to reset isBr and isHr on every interation of the loop 6615 if (offset > 0) { 6616 isBr = isNamedHtmlElement(node.childNodes[offset - 1], "br") || false; 6617 isHr = isNamedHtmlElement(node.childNodes[offset - 1], "hr") || false; 6618 } 6619 // "If offset is zero and node's previousSibling is an editable 6620 // invisible node, remove node's previousSibling from its parent." 6621 if (offset == 0 && isEditable(node.previousSibling) && isInvisible(node.previousSibling)) { 6622 node.parentNode.removeChild(node.previousSibling); 6623 continue; 6624 } 6625 // "Otherwise, if node has a child with index offset − 1 and that 6626 // child is an editable invisible node, remove that child from 6627 // node, then subtract one from offset." 6628 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && (isInvisible(node.childNodes[offset - 1]) || isBr || isHr)) { 6629 node.removeChild(node.childNodes[offset - 1]); 6630 offset--; 6631 if (isBr || isHr) { 6632 range.setStart(node, offset); 6633 range.setEnd(node, offset); 6634 return; 6635 } 6636 continue; 6637 6638 } 6639 // "Otherwise, if offset is zero and node is an inline node, or if 6640 // node is an invisible node, set offset to the index of node, then 6641 // set node to its parent." 6642 if ((offset == 0 && isInlineNode(node)) || isInvisible(node)) { 6643 offset = Dom.getIndexInParent(node); 6644 node = node.parentNode; 6645 continue; 6646 } 6647 // "Otherwise, if node has a child with index offset − 1 and that 6648 // child is an editable a, remove that child from node, preserving 6649 // its descendants. Then abort these steps." 6650 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && isNamedHtmlElement(node.childNodes[offset - 1], "a")) { 6651 removePreservingDescendants(node.childNodes[offset - 1], range); 6652 return; 6653 6654 } 6655 // "Otherwise, if node has a child with index offset − 1 and that 6656 // child is not a block node or a br or an img, set node to that 6657 // child, then set offset to the length of node." 6658 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && !isBlockNode(node.childNodes[offset - 1]) && !isHtmlElementInArray(node.childNodes[offset - 1], ["br", "img"])) { 6659 node = node.childNodes[offset - 1]; 6660 offset = getNodeLength(node); 6661 continue; 6662 } 6663 // "Otherwise, break from this loop." 6664 // brk is a quick and dirty jslint workaround since I don't want to rewrite this loop 6665 var brk = true; 6666 if (brk) { 6667 break; 6668 } 6669 } 6670 6671 // if the previous node is an aloha-table we want to delete it 6672 var delBlock = getBlockAtPreviousPosition(node, offset); 6673 if (delBlock) { 6674 delBlock.parentNode.removeChild(delBlock); 6675 return; 6676 } 6677 6678 // "If node is a Text node and offset is not zero, call collapse(node, 6679 // offset) on the Selection. Then delete the contents of the range with 6680 // start (node, offset − 1) and end (node, offset) and abort these 6681 // steps." 6682 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0) { 6683 range.setStart(node, offset - 1); 6684 range.setEnd(node, offset - 1); 6685 deleteContents(node, offset - 1, node, offset); 6686 return; 6687 } 6688 6689 // @iebug 6690 // when inserting a special char via the plugin 6691 // there where problems deleting them again with backspace after insertation 6692 // see https://github.com/alohaeditor/Aloha-Editor/issues/517 6693 if (node.nodeType == $_.Node.TEXT_NODE && offset == 0 && jQuery.browser.msie) { 6694 offset = 1; 6695 range.setStart(node, offset); 6696 range.setEnd(node, offset); 6697 range.startOffset = 0; 6698 deleteContents(range); 6699 return; 6700 } 6701 6702 // "If node is an inline node, abort these steps." 6703 if (isInlineNode(node)) { 6704 return; 6705 } 6706 6707 // "If node has a child with index offset − 1 and that child is a br or 6708 // hr or img, call collapse(node, offset) on the Selection. Then delete 6709 // the contents of the range with start (node, offset − 1) and end 6710 // (node, offset) and abort these steps." 6711 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset - 1], ["br", "hr", "img"])) { 6712 range.setStart(node, offset); 6713 range.setEnd(node, offset); 6714 deleteContents(range); 6715 return; 6716 } 6717 6718 // "If node is an li or dt or dd and is the first child of its parent, 6719 // and offset is zero:" 6720 if (isHtmlElementInArray(node, ["li", "dt", "dd"]) && node == node.parentNode.firstChild && offset == 0) { 6721 // "Let items be a list of all lis that are ancestors of node." 6722 // 6723 // Remember, must be in tree order. 6724 var items = []; 6725 var ancestor; 6726 for (ancestor = node.parentNode; ancestor; ancestor = ancestor.parentNode) { 6727 if (isNamedHtmlElement(ancestor, 'li')) { 6728 items.unshift(ancestor); 6729 } 6730 } 6731 6732 // "Normalize sublists of each item in items." 6733 for (i = 0; i < items.length; i++) { 6734 normalizeSublists(items[i], range); 6735 } 6736 6737 // "Record the values of the one-node list consisting of node, and 6738 // let values be the result." 6739 var values = recordValues([node]); 6740 6741 // "Split the parent of the one-node list consisting of node." 6742 splitParent([node], range); 6743 6744 // "Restore the values from values." 6745 restoreValues(values, range); 6746 6747 // "If node is a dd or dt, and it is not an allowed child of any of 6748 // its ancestors in the same editing host, set the tag name of node 6749 // to the default single-line container name and let node be the 6750 // result." 6751 if (isHtmlElementInArray(node, ["dd", "dt"]) && $_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); })) { 6752 node = setTagName(node, defaultSingleLineContainerName, range); 6753 } 6754 6755 // "Fix disallowed ancestors of node." 6756 fixDisallowedAncestors(node, range); 6757 6758 // fix the lists to be html5 conformant 6759 for (i = 0; i < items.length; i++) { 6760 unNormalizeSublists(items[i].parentNode, range); 6761 } 6762 6763 // "Abort these steps." 6764 return; 6765 } 6766 6767 // "Let start node equal node and let start offset equal offset." 6768 var startNode = node; 6769 var startOffset = offset; 6770 6771 // "Repeat the following steps:" 6772 while (true) { 6773 // "If start offset is zero, set start offset to the index of start 6774 // node and then set start node to its parent." 6775 if (startOffset == 0) { 6776 startOffset = Dom.getIndexInParent(startNode); 6777 startNode = startNode.parentNode; 6778 6779 // "Otherwise, if start node has an editable invisible child with 6780 // index start offset minus one, remove it from start node and 6781 // subtract one from start offset." 6782 } else if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) { 6783 startNode.removeChild(startNode.childNodes[startOffset - 1]); 6784 startOffset--; 6785 6786 // "Otherwise, break from this loop." 6787 } else { 6788 break; 6789 } 6790 } 6791 6792 // "If offset is zero, and node has an editable ancestor container in 6793 // the same editing host that's an indentation element:" 6794 if (offset == 0 && $_(getAncestors(node).concat(node)).filter(function (ancestor) { return isEditable(ancestor) && inSameEditingHost(ancestor, node) && isIndentationElement(ancestor); }).length) { 6795 // "Block-extend the range whose start and end are both (node, 0), 6796 // and let new range be the result." 6797 var newRange = Aloha.createRange(); 6798 newRange.setStart(node, 0); 6799 newRange.setEnd(node, 0); 6800 newRange = blockExtend(newRange); 6801 6802 // "Let node list be a list of nodes, initially empty." 6803 // 6804 // "For each node current node contained in new range, append 6805 // current node to node list if the last member of node list (if 6806 // any) is not an ancestor of current node, and current node is 6807 // editable but has no editable descendants." 6808 var nodeList = getContainedNodes(newRange, function (currentNode) { 6809 return isEditable(currentNode) && !hasEditableDescendants(currentNode); 6810 }); 6811 6812 // "Outdent each node in node list." 6813 for (i = 0; i < nodeList.length; i++) { 6814 outdentNode(nodeList[i], range); 6815 } 6816 6817 // "Abort these steps." 6818 return; 6819 } 6820 6821 // "If the child of start node with index start offset is a table, 6822 // abort these steps." 6823 if (isNamedHtmlElement(startNode.childNodes[startOffset], "table")) { 6824 return; 6825 } 6826 6827 // "If start node has a child with index start offset − 1, and that 6828 // child is a table:" 6829 if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isNamedHtmlElement(startNode.childNodes[startOffset - 1], "table")) { 6830 // "Call collapse(start node, start offset − 1) on the context 6831 // object's Selection." 6832 range.setStart(startNode, startOffset - 1); 6833 6834 // "Call extend(start node, start offset) on the context object's 6835 // Selection." 6836 range.setEnd(startNode, startOffset); 6837 6838 // "Abort these steps." 6839 return; 6840 } 6841 6842 // "If offset is zero; and either the child of start node with index 6843 // start offset minus one is an hr, or the child is a br whose 6844 // previousSibling is either a br or not an inline node:" 6845 if (offset == 0 6846 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "hr") 6847 6848 || (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "br") 6849 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1].previousSibling, "br") 6850 || !isInlineNode(startNode.childNodes[startOffset - 1].previousSibling))))) { 6851 // "Call collapse(node, offset) on the Selection." 6852 6853 range.setStart(node, offset); 6854 range.setEnd(node, offset); 6855 6856 // "Delete the contents of the range with start (start node, start 6857 // offset − 1) and end (start node, start offset)." 6858 deleteContents(startNode, startOffset - 1, startNode, startOffset); 6859 6860 // "Abort these steps." 6861 return; 6862 } 6863 6864 // "If the child of start node with index start offset is an li or dt 6865 // or dd, and that child's firstChild is an inline node, and start 6866 // offset is not zero:" 6867 if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isInlineNode(startNode.childNodes[startOffset].firstChild) && startOffset != 0) { 6868 // "Let previous item be the child of start node with index start 6869 // offset minus one." 6870 var previousItem = startNode.childNodes[startOffset - 1]; 6871 6872 // "If previous item's lastChild is an inline node other than a br, 6873 // call createElement("br") on the context object and append the 6874 // result as the last child of previous item." 6875 if (isInlineNode(previousItem.lastChild) && !isNamedHtmlElement(previousItem.lastChild, "br")) { 6876 previousItem.appendChild(document.createElement("br")); 6877 } 6878 6879 // "If previous item's lastChild is an inline node, call 6880 // createElement("br") on the context object and append the result 6881 // as the last child of previous item." 6882 if (isInlineNode(previousItem.lastChild)) { 6883 previousItem.appendChild(document.createElement("br")); 6884 } 6885 } 6886 6887 // "If the child of start node with index start offset is an li or dt 6888 // or dd, and its previousSibling is also an li or dt or dd, set start 6889 // node to its child with index start offset − 1, then set start offset 6890 // to start node's length, then set node to start node's nextSibling, 6891 // then set offset to 0." 6892 if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isHtmlElementInArray(startNode.childNodes[startOffset - 1], ["li", "dt", "dd"])) { 6893 startNode = startNode.childNodes[startOffset - 1]; 6894 startOffset = getNodeLength(startNode); 6895 node = startNode.nextSibling; 6896 offset = 0; 6897 6898 // "Otherwise, while start node has a child with index start offset 6899 // minus one:" 6900 } else { 6901 while (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length) { 6902 // "If start node's child with index start offset minus one is 6903 // editable and invisible, remove it from start node, then 6904 // subtract one from start offset." 6905 if (isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) { 6906 startNode.removeChild(startNode.childNodes[startOffset - 1]); 6907 startOffset--; 6908 6909 // "Otherwise, set start node to its child with index start 6910 // offset minus one, then set start offset to the length of 6911 // start node." 6912 } else { 6913 startNode = startNode.childNodes[startOffset - 1]; 6914 startOffset = getNodeLength(startNode); 6915 } 6916 } 6917 } 6918 6919 // "Delete the contents of the range with start (start node, start 6920 // offset) and end (node, offset)." 6921 var delRange = Aloha.createRange(); 6922 delRange.setStart(startNode, startOffset); 6923 delRange.setEnd(node, offset); 6924 deleteContents(delRange); 6925 6926 if (!isAncestorContainer(document.body, range.startContainer)) { 6927 if (delRange.startContainer.hasChildNodes() 6928 || delRange.startContainer.nodeType == $_.Node.TEXT_NODE 6929 || isEditingHost(delRange.startContainer)) { 6930 range.setStart(delRange.startContainer, delRange.startOffset); 6931 range.setEnd(delRange.startContainer, delRange.startOffset); 6932 } else { 6933 range.setStart(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer)); 6934 range.setEnd(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer)); 6935 } 6936 } 6937 } 6938 }; 6939 6940 //@} 6941 ///// The formatBlock command ///// 6942 //@{ 6943 // "A formattable block name is "address", "dd", "div", "dt", "h1", "h2", "h3", 6944 // "h4", "h5", "h6", "p", or "pre"." 6945 var formattableBlockNames = ["address", "dd", "div", "dt", "h1", "h2", "h3", "h4", "h5", "h6", "p", "pre"]; 6946 6947 commands.formatblock = { 6948 action: function (value) { 6949 var i; 6950 6951 // "If value begins with a "<" character and ends with a ">" character, 6952 // remove the first and last characters from it." 6953 if (/^<.*>$/.test(value)) { 6954 value = value.slice(1, -1); 6955 } 6956 6957 // "Let value be converted to ASCII lowercase." 6958 value = value.toLowerCase(); 6959 6960 // "If value is not a formattable block name, abort these steps and do 6961 // nothing." 6962 if ($_(formattableBlockNames).indexOf(value) == -1) { 6963 return; 6964 } 6965 6966 // "Block-extend the active range, and let new range be the result." 6967 var newRange = blockExtend(getActiveRange()); 6968 6969 // "Let node list be an empty list of nodes." 6970 // 6971 // "For each node node contained in new range, append node to node list 6972 // if it is editable, the last member of original node list (if any) is 6973 // not an ancestor of node, node is either a non-list single-line 6974 // container or an allowed child of "p" or a dd or dt, and node is not 6975 // the ancestor of a prohibited paragraph child." 6976 var nodeList = getContainedNodes(newRange, function (node) { 6977 return isEditable(node) && (isNonListSingleLineContainer(node) || isAllowedChild(node, "p") || isHtmlElementInArray(node, ["dd", "dt"])) && !$_(getDescendants(node)).some(isProhibitedParagraphChild); 6978 }); 6979 6980 // "Record the values of node list, and let values be the result." 6981 var values = recordValues(nodeList); 6982 6983 function makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node) { 6984 return function (ancestor) { 6985 return (isEditable(ancestor) 6986 && inSameEditingHost(ancestor, node) 6987 && isHtmlElement_obsolete(ancestor, formattableBlockNames) 6988 && !$_(getDescendants(ancestor)).some(isProhibitedParagraphChild)); 6989 }; 6990 } 6991 6992 function makeIsElementWithoutAttributes(value) { 6993 return function (node) { 6994 return isHtmlElement_obsolete(node, value) && !node.attributes.length; 6995 }; 6996 } 6997 6998 6999 function returnFalse() { 7000 return false; 7001 } 7002 7003 function makeCreateElement(value) { 7004 return function () { 7005 return document.createElement(value); 7006 }; 7007 } 7008 7009 // "For each node in node list, while node is the descendant of an 7010 // editable HTML element in the same editing host, whose local name is 7011 // a formattable block name, and which is not the ancestor of a 7012 // prohibited paragraph child, split the parent of the one-node list 7013 // consisting of node." 7014 for (i = 0; i < nodeList.length; i++) { 7015 var node = nodeList[i]; 7016 while ($_(getAncestors(node)).some(makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node))) { 7017 splitParent([node], newRange); 7018 } 7019 } 7020 7021 // "Restore the values from values." 7022 restoreValues(values, newRange); 7023 7024 // "While node list is not empty:" 7025 while (nodeList.length) { 7026 var sublist; 7027 7028 // "If the first member of node list is a single-line 7029 // container:" 7030 if (isSingleLineContainer(nodeList[0])) { 7031 // "Let sublist be the children of the first member of node 7032 // list." 7033 sublist = [].slice.call(toArray(nodeList[0].childNodes)); 7034 7035 // "Record the values of sublist, and let values be the 7036 // result." 7037 values = recordValues(sublist); 7038 7039 // "Remove the first member of node list from its parent, 7040 // preserving its descendants." 7041 removePreservingDescendants(nodeList[0], newRange); 7042 7043 // "Restore the values from values." 7044 restoreValues(values, newRange); 7045 7046 // "Remove the first member from node list." 7047 nodeList.shift(); 7048 7049 // "Otherwise:" 7050 } else { 7051 // "Let sublist be an empty list of nodes." 7052 sublist = []; 7053 7054 // "Remove the first member of node list and append it to 7055 // sublist." 7056 sublist.push(nodeList.shift()); 7057 7058 // "While node list is not empty, and the first member of 7059 // node list is the nextSibling of the last member of 7060 // sublist, and the first member of node list is not a 7061 // single-line container, and the last member of sublist is 7062 // not a br, remove the first member of node list and 7063 // append it to sublist." 7064 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isSingleLineContainer(nodeList[0]) && !isNamedHtmlElement(sublist[sublist.length - 1], "BR")) { 7065 sublist.push(nodeList.shift()); 7066 } 7067 } 7068 7069 // "Wrap sublist. If value is "div" or "p", sibling criteria 7070 // returns false; otherwise it returns true for an HTML element 7071 // with local name value and no attributes, and false otherwise. 7072 // New parent instructions return the result of running 7073 // createElement(value) on the context object. Then fix disallowed 7074 // ancestors of the result." 7075 fixDisallowedAncestors(wrap( 7076 sublist, 7077 jQuery.inArray(value, ["div", "p"]) == -1 ? makeIsElementWithoutAttributes(value) : returnFalse, 7078 makeCreateElement(value), 7079 newRange 7080 ), newRange); 7081 } 7082 }, 7083 indeterm: function () { 7084 // "Block-extend the active range, and let new range be the result." 7085 var newRange = blockExtend(getActiveRange()); 7086 7087 // "Let node list be all visible editable nodes that are contained in 7088 // new range and have no children." 7089 var nodeList = getAllContainedNodes(newRange, function (node) { 7090 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7091 }); 7092 7093 // "If node list is empty, return false." 7094 if (!nodeList.length) { 7095 return false; 7096 } 7097 7098 // "Let type be null." 7099 var type = null; 7100 7101 // "For each node in node list:" 7102 var i; 7103 for (i = 0; i < nodeList.length; i++) { 7104 var node = nodeList[i]; 7105 7106 // "While node's parent is editable and in the same editing host as 7107 // node, and node is not an HTML element whose local name is a 7108 // formattable block name, set node to its parent." 7109 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7110 node = node.parentNode; 7111 } 7112 7113 // "Let current type be the empty string." 7114 var currentType = ""; 7115 7116 // "If node is an editable HTML element whose local name is a 7117 // formattable block name, and node is not the ancestor of a 7118 // prohibited paragraph child, set current type to node's local 7119 // name." 7120 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7121 currentType = node.tagName; 7122 } 7123 7124 // "If type is null, set type to current type." 7125 if (type === null) { 7126 type = currentType; 7127 7128 // "Otherwise, if type does not equal current type, return true." 7129 } else if (type != currentType) { 7130 return true; 7131 } 7132 } 7133 7134 // "Return false." 7135 return false; 7136 }, 7137 value: function () { 7138 // "Block-extend the active range, and let new range be the result." 7139 var newRange = blockExtend(getActiveRange()); 7140 7141 // "Let node be the first visible editable node that is contained in 7142 // new range and has no children. If there is no such node, return the 7143 // empty string." 7144 var nodes = getAllContainedNodes(newRange, function (node) { 7145 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7146 }); 7147 if (!nodes.length) { 7148 return ""; 7149 7150 } 7151 var node = nodes[0]; 7152 7153 // "While node's parent is editable and in the same editing host as 7154 // node, and node is not an HTML element whose local name is a 7155 // formattable block name, set node to its parent." 7156 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7157 node = node.parentNode; 7158 } 7159 7160 // "If node is an editable HTML element whose local name is a 7161 // formattable block name, and node is not the ancestor of a prohibited 7162 // paragraph child, return node's local name, converted to ASCII 7163 // lowercase." 7164 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7165 return node.tagName.toLowerCase(); 7166 } 7167 7168 // "Return the empty string." 7169 return ""; 7170 } 7171 }; 7172 7173 //@} 7174 ///// The forwardDelete command ///// 7175 //@{ 7176 commands.forwarddelete = { 7177 action: function (value, range) { 7178 // special behaviour for skipping zero-width whitespaces in IE7 7179 if (jQuery.browser.msie && jQuery.browser.version <= 7) { 7180 moveOverZWSP(range, true); 7181 } 7182 7183 // "If the active range is not collapsed, delete the contents of the 7184 // active range and abort these steps." 7185 if (!range.collapsed) { 7186 deleteContents(range); 7187 return; 7188 } 7189 7190 // "Canonicalize whitespace at (active range's start node, active 7191 // range's start offset)." 7192 canonicalizeWhitespace(range.startContainer, range.startOffset); 7193 7194 // "Let node and offset be the active range's start node and offset." 7195 var node = range.startContainer; 7196 var offset = range.startOffset; 7197 var isBr = false; 7198 var isHr = false; 7199 7200 // "Repeat the following steps:" 7201 while (true) { 7202 // check whether the next element is a br or hr 7203 // Commented out for unknown reason. 7204 //if (offset < node.childNodes.length) { 7205 // isBr = isHtmlElement_obsolete(node.childNodes[offset], "br") || false; 7206 // isHr = isHtmlElement_obsolete(node.childNodes[offset], "hr") || false; 7207 //} 7208 7209 // "If offset is the length of node and node's nextSibling is an 7210 // editable invisible node, remove node's nextSibling from its 7211 // parent." 7212 if (offset == getNodeLength(node) && isEditable(node.nextSibling) && isInvisible(node.nextSibling)) { 7213 node.parentNode.removeChild(node.nextSibling); 7214 7215 // "Otherwise, if node has a child with index offset and that child 7216 // is an editable invisible node, remove that child from node." 7217 } else if (offset < node.childNodes.length && isEditable(node.childNodes[offset]) && (isInvisible(node.childNodes[offset]) || isBr || isHr)) { 7218 node.removeChild(node.childNodes[offset]); 7219 if (isBr || isHr) { 7220 ensureContainerEditable(node); 7221 range.setStart(node, offset); 7222 range.setEnd(node, offset); 7223 return; 7224 } 7225 7226 // "Otherwise, if node has a child with index offset and that child 7227 // is a collapsed block prop, add one to offset." 7228 } else if (offset < node.childNodes.length && isCollapsedBlockProp(node.childNodes[offset])) { 7229 offset++; 7230 7231 // "Otherwise, if offset is the length of node and node is an 7232 // inline node, or if node is invisible, set offset to one plus the 7233 // index of node, then set node to its parent." 7234 } else if ((offset == getNodeLength(node) && isInlineNode(node)) || isInvisible(node)) { 7235 offset = 1 + Dom.getIndexInParent(node); 7236 node = node.parentNode; 7237 7238 // "Otherwise, if node has a child with index offset and that child 7239 // is not a block node or a br or an img, set node to that child, 7240 // then set offset to zero." 7241 } else if (offset < node.childNodes.length && !isBlockNode(node.childNodes[offset]) && !isHtmlElementInArray(node.childNodes[offset], ["br", "img"])) { 7242 node = node.childNodes[offset]; 7243 offset = 0; 7244 7245 // "Otherwise, break from this loop." 7246 } else { 7247 break; 7248 } 7249 } 7250 7251 // collapse whitespace in the node, if it is a text node 7252 canonicalizeWhitespace(range.startContainer, range.startOffset); 7253 7254 // if the next node is an aloha-table we want to delete it 7255 var delBlock = getBlockAtNextPosition(node, offset); 7256 if (delBlock) { 7257 delBlock.parentNode.removeChild(delBlock); 7258 return; 7259 } 7260 7261 var endOffset; 7262 // "If node is a Text node and offset is not node's length:" 7263 if (node.nodeType == $_.Node.TEXT_NODE && offset != getNodeLength(node)) { 7264 // "Call collapse(node, offset) on the Selection." 7265 range.setStart(node, offset); 7266 range.setEnd(node, offset); 7267 7268 // "Let end offset be offset plus one." 7269 endOffset = offset + 1; 7270 7271 // "While end offset is not node's length and the end offsetth 7272 // element of node's data has general category M when interpreted 7273 // as a Unicode code point, add one to end offset." 7274 // 7275 // TODO: Not even going to try handling anything beyond the most 7276 // basic combining marks, since I couldn't find a good list. I 7277 // special-case a few Hebrew diacritics too to test basic coverage 7278 // of non-Latin stuff. 7279 while (endOffset != node.length && /^[\u0300-\u036f\u0591-\u05bd\u05c1\u05c2]$/.test(node.data[endOffset])) { 7280 endOffset++; 7281 } 7282 7283 // "Delete the contents of the range with start (node, offset) and 7284 // end (node, end offset)." 7285 deleteContents(node, offset, node, endOffset); 7286 7287 // "Abort these steps." 7288 return; 7289 } 7290 7291 // "If node is an inline node, abort these steps." 7292 if (isInlineNode(node)) { 7293 return; 7294 } 7295 7296 // "If node has a child with index offset and that child is a br or hr 7297 // or img, call collapse(node, offset) on the Selection. Then delete 7298 // the contents of the range with start (node, offset) and end (node, 7299 // offset + 1) and abort these steps." 7300 if (offset < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset], ["br", "hr", "img"])) { 7301 range.setStart(node, offset); 7302 range.setEnd(node, offset); 7303 deleteContents(node, offset, node, offset + 1); 7304 return; 7305 } 7306 7307 // "Let end node equal node and let end offset equal offset." 7308 var endNode = node; 7309 endOffset = offset; 7310 7311 // "Repeat the following steps:" 7312 while (true) { 7313 // "If end offset is the length of end node, set end offset to one 7314 // plus the index of end node and then set end node to its parent." 7315 if (endOffset == getNodeLength(endNode)) { 7316 endOffset = 1 + Dom.getIndexInParent(endNode); 7317 endNode = endNode.parentNode; 7318 7319 // "Otherwise, if end node has a an editable invisible child with 7320 // index end offset, remove it from end node." 7321 } else if (endOffset < endNode.childNodes.length && isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7322 endNode.removeChild(endNode.childNodes[endOffset]); 7323 7324 // "Otherwise, break from this loop." 7325 } else { 7326 break; 7327 } 7328 } 7329 7330 // "If the child of end node with index end offset minus one is a 7331 // table, abort these steps." 7332 if (isNamedHtmlElement(endNode.childNodes[endOffset - 1], "table")) { 7333 return; 7334 } 7335 7336 // "If the child of end node with index end offset is a table:" 7337 if (isNamedHtmlElement(endNode.childNodes[endOffset], "table")) { 7338 // "Call collapse(end node, end offset) on the context object's 7339 // Selection." 7340 range.setStart(endNode, endOffset); 7341 7342 // "Call extend(end node, end offset + 1) on the context object's 7343 // Selection." 7344 range.setEnd(endNode, endOffset + 1); 7345 7346 // "Abort these steps." 7347 return; 7348 } 7349 7350 // "If offset is the length of node, and the child of end node with 7351 // index end offset is an hr or br:" 7352 if (offset == getNodeLength(node) && isHtmlElementInArray(endNode.childNodes[endOffset], ["br", "hr"])) { 7353 // "Call collapse(node, offset) on the Selection." 7354 range.setStart(node, offset); 7355 range.setEnd(node, offset); 7356 7357 // "Delete the contents of the range with end (end node, end 7358 // offset) and end (end node, end offset + 1)." 7359 deleteContents(endNode, endOffset, endNode, endOffset + 1); 7360 7361 // "Abort these steps." 7362 return; 7363 } 7364 7365 // "While end node has a child with index end offset:" 7366 while (endOffset < endNode.childNodes.length) { 7367 // "If end node's child with index end offset is editable and 7368 // invisible, remove it from end node." 7369 if (isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7370 endNode.removeChild(endNode.childNodes[endOffset]); 7371 7372 // "Otherwise, set end node to its child with index end offset and 7373 // set end offset to zero." 7374 } else { 7375 endNode = endNode.childNodes[endOffset]; 7376 endOffset = 0; 7377 } 7378 } 7379 7380 // "Delete the contents of the range with start (node, offset) and end 7381 // (end node, end offset)." 7382 var newRange = deleteContents(node, offset, endNode, endOffset); 7383 range.setStart(newRange.startContainer, newRange.startOffset); 7384 range.setEnd(newRange.endContainer, newRange.endOffset); 7385 } 7386 }; 7387 7388 //@} 7389 ///// The indent command ///// 7390 //@{ 7391 commands.indent = { 7392 action: function () { 7393 // "Let items be a list of all lis that are ancestor containers of the 7394 // active range's start and/or end node." 7395 // 7396 // Has to be in tree order, remember! 7397 var items = []; 7398 var node; 7399 for (node = getActiveRange().endContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7400 if (isNamedHtmlElement(node, "LI")) { 7401 items.unshift(node); 7402 } 7403 } 7404 for (node = getActiveRange().startContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7405 if (isNamedHtmlElement(node, "LI")) { 7406 items.unshift(node); 7407 } 7408 } 7409 for (node = getActiveRange().commonAncestorContainer; node; node = node.parentNode) { 7410 if (isNamedHtmlElement(node, "LI")) { 7411 items.unshift(node); 7412 } 7413 } 7414 7415 // "For each item in items, normalize sublists of item." 7416 var i; 7417 for (i = 0; i < items.length; i++) { 7418 normalizeSublists(items[i], getActiveRange()); 7419 } 7420 7421 // "Block-extend the active range, and let new range be the result." 7422 var newRange = blockExtend(getActiveRange()); 7423 7424 // "Let node list be a list of nodes, initially empty." 7425 var nodeList = []; 7426 7427 // "For each node node contained in new range, if node is editable and 7428 // is an allowed child of "div" or "ol" and if the last member of node 7429 // list (if any) is not an ancestor of node, append node to node list." 7430 nodeList = getContainedNodes(newRange, function (node) { 7431 return isEditable(node) && (isAllowedChild(node, "div") || isAllowedChild(node, "ol")); 7432 }); 7433 7434 // "If the first member of node list is an li whose parent is an ol or 7435 // ul, and its previousSibling is an li as well, normalize sublists of 7436 // its previousSibling." 7437 if (nodeList.length && isNamedHtmlElement(nodeList[0], "LI") && isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]) && isNamedHtmlElement(nodeList[0].previousSibling, "LI")) { 7438 normalizeSublists(nodeList[0].previousSibling, newRange); 7439 } 7440 7441 // "While node list is not empty:" 7442 while (nodeList.length) { 7443 // "Let sublist be a list of nodes, initially empty." 7444 var sublist = []; 7445 7446 // "Remove the first member of node list and append it to sublist." 7447 sublist.push(nodeList.shift()); 7448 7449 // "While the first member of node list is the nextSibling of the 7450 // last member of sublist, remove the first member of node list and 7451 // append it to sublist." 7452 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 7453 sublist.push(nodeList.shift()); 7454 } 7455 7456 // "Indent sublist." 7457 indentNodes(sublist, newRange); 7458 } 7459 } 7460 }; 7461 7462 //@} 7463 ///// The insertHorizontalRule command ///// 7464 //@{ 7465 commands.inserthorizontalrule = { 7466 action: function (value, range) { 7467 7468 // "While range's start offset is 0 and its start node's parent is not 7469 // null, set range's start to (parent of start node, index of start 7470 // node)." 7471 while (range.startOffset == 0 && range.startContainer.parentNode) { 7472 range.setStart(range.startContainer.parentNode, Dom.getIndexInParent(range.startContainer)); 7473 } 7474 7475 // "While range's end offset is the length of its end node, and its end 7476 // node's parent is not null, set range's end to (parent of end node, 1 7477 // + index of start node)." 7478 while (range.endOffset == getNodeLength(range.endContainer) && range.endContainer.parentNode) { 7479 range.setEnd(range.endContainer.parentNode, 1 + Dom.getIndexInParent(range.endContainer)); 7480 } 7481 7482 // "Delete the contents of range, with block merging false." 7483 deleteContents(range, { 7484 blockMerging: false 7485 }); 7486 7487 // "If the active range's start node is neither editable nor an editing 7488 // host, abort these steps." 7489 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7490 return; 7491 } 7492 7493 // "If the active range's start node is a Text node and its start 7494 // offset is zero, set the active range's start and end to (parent of 7495 // start node, index of start node)." 7496 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == 0) { 7497 getActiveRange().setStart(getActiveRange().startContainer.parentNode, Dom.getIndexInParent(getActiveRange().startContainer)); 7498 getActiveRange().collapse(true); 7499 } 7500 7501 // "If the active range's start node is a Text node and its start 7502 // offset is the length of its start node, set the active range's start 7503 // and end to (parent of start node, 1 + index of start node)." 7504 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == getNodeLength(getActiveRange().startContainer)) { 7505 getActiveRange().setStart(getActiveRange().startContainer.parentNode, 1 + Dom.getIndexInParent(getActiveRange().startContainer)); 7506 getActiveRange().collapse(true); 7507 } 7508 7509 // "Let hr be the result of calling createElement("hr") on the 7510 // context object." 7511 var hr = document.createElement("hr"); 7512 7513 // "Run insertNode(hr) on the range." 7514 range.insertNode(hr); 7515 7516 // "Fix disallowed ancestors of hr." 7517 fixDisallowedAncestors(hr, range); 7518 7519 // "Run collapse() on the Selection, with first argument equal to the 7520 // parent of hr and the second argument equal to one plus the index of 7521 // hr." 7522 // 7523 // Not everyone actually supports collapse(), so we do it manually 7524 // instead. Also, we need to modify the actual range we're given as 7525 // well, for the sake of autoimplementation.html's range-filling-in. 7526 range.setStart(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7527 range.setEnd(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7528 Aloha.getSelection().removeAllRanges(); 7529 Aloha.getSelection().addRange(range); 7530 } 7531 }; 7532 7533 //@} 7534 ///// The insertHTML command ///// 7535 //@{ 7536 commands.inserthtml = { 7537 action: function (value, range) { 7538 7539 7540 // "Delete the contents of the active range." 7541 deleteContents(range); 7542 7543 // "If the active range's start node is neither editable nor an editing 7544 // host, abort these steps." 7545 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7546 return; 7547 } 7548 7549 // "Let frag be the result of calling createContextualFragment(value) 7550 // on the active range." 7551 var frag = range.createContextualFragment(value); 7552 7553 // "Let last child be the lastChild of frag." 7554 var lastChild = frag.lastChild; 7555 7556 // "If last child is null, abort these steps." 7557 if (!lastChild) { 7558 return; 7559 } 7560 7561 // "Let descendants be all descendants of frag." 7562 var descendants = getDescendants(frag); 7563 7564 // "If the active range's start node is a block node:" 7565 if (isBlockNode(range.startContainer)) { 7566 // "Let collapsed block props be all editable collapsed block prop 7567 // children of the active range's start node that have index 7568 // greater than or equal to the active range's start offset." 7569 // 7570 // "For each node in collapsed block props, remove node from its 7571 // parent." 7572 $_(range.startContainer.childNodes).filter(function (node, range) { 7573 return isEditable(node) && isCollapsedBlockProp(node) && Dom.getIndexInParent(node) >= range.startOffset; 7574 }, true).forEach(function (node) { 7575 node.parentNode.removeChild(node); 7576 }); 7577 } 7578 7579 // "Call insertNode(frag) on the active range." 7580 range.insertNode(frag); 7581 7582 // "If the active range's start node is a block node with no visible 7583 // children, call createElement("br") on the context object and append 7584 // the result as the last child of the active range's start node." 7585 if (isBlockNode(range.startContainer)) { 7586 ensureContainerEditable(range.startContainer); 7587 } 7588 7589 // "Call collapse() on the context object's Selection, with last 7590 // child's parent as the first argument and one plus its index as the 7591 // second." 7592 range.setStart(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7593 range.setEnd(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7594 7595 // "Fix disallowed ancestors of each member of descendants." 7596 var i; 7597 for (i = 0; i < descendants.length; i++) { 7598 fixDisallowedAncestors(descendants[i], range); 7599 } 7600 7601 setActiveRange(range); 7602 } 7603 }; 7604 7605 //@} 7606 ///// The insertImage command ///// 7607 //@{ 7608 7609 commands.insertimage = { 7610 action: function (value) { 7611 // "If value is the empty string, abort these steps and do nothing." 7612 if (value === "") { 7613 return; 7614 } 7615 7616 // "Let range be the active range." 7617 var range = getActiveRange(); 7618 7619 // "Delete the contents of range, with strip wrappers false." 7620 deleteContents(range, { 7621 stripWrappers: false 7622 }); 7623 7624 // "If the active range's start node is neither editable nor an editing 7625 // host, abort these steps." 7626 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7627 return; 7628 } 7629 7630 // "If range's start node is a block node whose sole child is a br, and 7631 // its start offset is 0, remove its start node's child from it." 7632 if (isBlockNode(range.startContainer) && range.startContainer.childNodes.length == 1 && isNamedHtmlElement(range.startContainer.firstChild, "br") && range.startOffset == 0) { 7633 range.startContainer.removeChild(range.startContainer.firstChild); 7634 } 7635 7636 // "Let img be the result of calling createElement("img") on the 7637 // context object." 7638 var img = document.createElement("img"); 7639 7640 // "Run setAttribute("src", value) on img." 7641 img.setAttribute("src", value); 7642 7643 // "Run insertNode(img) on the range." 7644 range.insertNode(img); 7645 7646 // "Run collapse() on the Selection, with first argument equal to the 7647 // parent of img and the second argument equal to one plus the index of 7648 // img." 7649 // 7650 // Not everyone actually supports collapse(), so we do it manually 7651 // instead. Also, we need to modify the actual range we're given as 7652 // well, for the sake of autoimplementation.html's range-filling-in. 7653 range.setStart(img.parentNode, 1 + Dom.getIndexInParent(img)); 7654 range.setEnd(img.parentNode, 1 + Dom.getIndexInParent(img)); 7655 Aloha.getSelection().removeAllRanges(); 7656 Aloha.getSelection().addRange(range); 7657 7658 // IE adds width and height attributes for some reason, so remove those 7659 // to actually do what the spec says. 7660 img.removeAttribute("width"); 7661 7662 img.removeAttribute("height"); 7663 } 7664 }; 7665 7666 //@} 7667 ///// The insertLineBreak command ///// 7668 //@{ 7669 commands.insertlinebreak = { 7670 action: function (value, range) { 7671 // "Delete the contents of the active range, with strip wrappers false." 7672 deleteContents(range, { 7673 stripWrappers: false 7674 }); 7675 7676 // "If the active range's start node is neither editable nor an editing 7677 // host, abort these steps." 7678 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7679 return; 7680 } 7681 7682 // "If the active range's start node is an Element, and "br" is not an 7683 // allowed child of it, abort these steps." 7684 if (range.startContainer.nodeType == $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer)) { 7685 return; 7686 } 7687 7688 // "If the active range's start node is not an Element, and "br" is not 7689 // an allowed child of the active range's start node's parent, abort 7690 // these steps." 7691 if (range.startContainer.nodeType != $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer.parentNode)) { 7692 return; 7693 } 7694 7695 // "If the active range's start node is a Text node and its start 7696 // offset is zero, call collapse() on the context object's Selection, 7697 // with first argument equal to the active range's start node's parent 7698 // and second argument equal to the active range's start node's index." 7699 var newNode, newOffset; 7700 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == 0) { 7701 newNode = range.startContainer.parentNode; 7702 newOffset = Dom.getIndexInParent(range.startContainer); 7703 Aloha.getSelection().collapse(newNode, newOffset); 7704 range.setStart(newNode, newOffset); 7705 range.setEnd(newNode, newOffset); 7706 } 7707 7708 // "If the active range's start node is a Text node and its start 7709 // offset is the length of its start node, call collapse() on the 7710 // context object's Selection, with first argument equal to the active 7711 // range's start node's parent and second argument equal to one plus 7712 // the active range's start node's index." 7713 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == getNodeLength(range.startContainer)) { 7714 newNode = range.startContainer.parentNode; 7715 newOffset = 1 + Dom.getIndexInParent(range.startContainer); 7716 Aloha.getSelection().collapse(newNode, newOffset); 7717 range.setStart(newNode, newOffset); 7718 range.setEnd(newNode, newOffset); 7719 } 7720 7721 // "Let br be the result of calling createElement("br") on the context 7722 // object." 7723 var br = document.createElement("br"); 7724 7725 // "Call insertNode(br) on the active range." 7726 range.insertNode(br); 7727 7728 // "Call collapse() on the context object's Selection, with br's parent 7729 // as the first argument and one plus br's index as the second 7730 // argument." 7731 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7732 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7733 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7734 7735 // "If br is a collapsed line break, call createElement("br") on the 7736 // context object and let extra br be the result, then call 7737 // insertNode(extra br) on the active range." 7738 if (isCollapsedLineBreak(br)) { 7739 // TODO 7740 range.insertNode(createEndBreak()); 7741 7742 // Compensate for nonstandard implementations of insertNode 7743 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7744 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7745 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7746 } 7747 7748 // IE7 is adding this styles: height: auto; min-height: 0px; max-height: none; 7749 // with that there is the ugly "IE-editable-outline" 7750 if (jQuery.browser.msie && jQuery.browser.version < 8) { 7751 br.parentNode.removeAttribute("style"); 7752 } 7753 } 7754 }; 7755 7756 //@} 7757 ///// The insertOrderedList command ///// 7758 //@{ 7759 commands.insertorderedlist = { 7760 // "Toggle lists with tag name "ol"." 7761 action: function (value, range) { 7762 toggleLists("ol", range); 7763 }, 7764 // "True if the selection's list state is "mixed" or "mixed ol", false 7765 // otherwise." 7766 indeterm: function () { 7767 return (/^mixed( ol)?$/).test(getSelectionListState()); 7768 }, 7769 // "True if the selection's list state is "ol", false otherwise." 7770 state: function () { 7771 return getSelectionListState() == "ol"; 7772 } 7773 }; 7774 7775 var listRelatedElements = { 7776 "LI": true, 7777 "DT": true, 7778 "DD": true 7779 }; 7780 7781 //@} 7782 ///// The insertParagraph command ///// 7783 //@{ 7784 commands.insertparagraph = { 7785 action: function (value, range) { 7786 var i; 7787 7788 // "Delete the contents of the active range." 7789 deleteContents(range); 7790 7791 // clean lists in the editing host, this will remove any whitespace nodes around lists 7792 // because the following algorithm is not prepared to deal with them 7793 cleanLists(getEditingHostOf(range.startContainer), range); 7794 7795 // "If the active range's start node is neither editable nor an editing 7796 // host, abort these steps." 7797 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7798 return; 7799 } 7800 7801 // "Let node and offset be the active range's start node and offset." 7802 var node = range.startContainer; 7803 var offset = range.startOffset; 7804 7805 // "If node is a Text node, and offset is neither 0 nor the length of 7806 // node, call splitText(offset) on node." 7807 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0 && offset != getNodeLength(node)) { 7808 splitText(node, offset); 7809 } 7810 7811 // "If node is a Text node and offset is its length, set offset to one 7812 // plus the index of node, then set node to its parent." 7813 if (node.nodeType == $_.Node.TEXT_NODE && offset == getNodeLength(node)) { 7814 offset = 1 + Dom.getIndexInParent(node); 7815 node = node.parentNode; 7816 } 7817 7818 // "If node is a Text or Comment node, set offset to the index of node, 7819 // then set node to its parent." 7820 if (node.nodeType == $_.Node.TEXT_NODE || node.nodeType == $_.Node.COMMENT_NODE) { 7821 offset = Dom.getIndexInParent(node); 7822 node = node.parentNode; 7823 } 7824 7825 // "Call collapse(node, offset) on the context object's Selection." 7826 Aloha.getSelection().collapse(node, offset); 7827 range.setStart(node, offset); 7828 range.setEnd(node, offset); 7829 7830 // "Let container equal node." 7831 var container = node; 7832 7833 // "While container is not a single-line container, and container's 7834 // parent is editable and in the same editing host as node, set 7835 // container to its parent." 7836 while (!isSingleLineContainer(container) && isEditable(container.parentNode) && inSameEditingHost(node, container.parentNode)) { 7837 container = container.parentNode; 7838 } 7839 7840 // "If container is not editable or not in the same editing host as 7841 // node or is not a single-line container:" 7842 if (!isEditable(container) || !inSameEditingHost(container, node) || !isSingleLineContainer(container)) { 7843 // "Let tag be the default single-line container name." 7844 var tag = defaultSingleLineContainerName; 7845 7846 // "Block-extend the active range, and let new range be the 7847 // result." 7848 var newRange = blockExtend(range); 7849 7850 // "Let node list be a list of nodes, initially empty." 7851 // 7852 // "Append to node list the first node in tree order that is 7853 // contained in new range and is an allowed child of "p", if any." 7854 var nodeList = getContainedNodes(newRange, function (node) { 7855 return isAllowedChild(node, "p"); 7856 }).slice(0, 1); 7857 7858 // "If node list is empty:" 7859 if (!nodeList.length) { 7860 // "If tag is not an allowed child of the active range's start 7861 // node, abort these steps." 7862 if (!isAllowedChild(tag, range.startContainer)) { 7863 return; 7864 } 7865 7866 // "Set container to the result of calling createElement(tag) 7867 // on the context object." 7868 container = document.createElement(tag); 7869 7870 7871 // "Call insertNode(container) on the active range." 7872 range.insertNode(container); 7873 7874 // "Call createElement("br") on the context object, and append 7875 // the result as the last child of container." 7876 // TODO not always 7877 container.appendChild(createEndBreak()); 7878 7879 // "Call collapse(container, 0) on the context object's 7880 // Selection." 7881 // TODO: remove selection from command 7882 Aloha.getSelection().collapse(container, 0); 7883 range.setStart(container, 0); 7884 range.setEnd(container, 0); 7885 7886 // "Abort these steps." 7887 return; 7888 } 7889 7890 // "While the nextSibling of the last member of node list is not 7891 // null and is an allowed child of "p", append it to node list." 7892 while (nodeList[nodeList.length - 1].nextSibling && isAllowedChild(nodeList[nodeList.length - 1].nextSibling, "p")) { 7893 nodeList.push(nodeList[nodeList.length - 1].nextSibling); 7894 } 7895 7896 // "Wrap node list, with sibling criteria returning false and new 7897 // parent instructions returning the result of calling 7898 // createElement(tag) on the context object. Set container to the 7899 // result." 7900 container = wrap( 7901 nodeList, 7902 function () { 7903 return false; 7904 }, 7905 function () { 7906 return document.createElement(tag); 7907 }, 7908 range 7909 ); 7910 } 7911 7912 // If no container has been set yet, it is not possible to insert a paragraph at this position; 7913 // the following steps are skipped in order to prevent critical errors from occurring; 7914 if (!container) { 7915 return; 7916 } 7917 7918 // "If container's local name is "address", "listing", or "pre":" 7919 var oldHeight, newHeight; 7920 if (container.tagName == "ADDRESS" || container.tagName == "LISTING" || container.tagName == "PRE") { 7921 // "Let br be the result of calling createElement("br") on the 7922 // context object." 7923 var br = document.createElement("br"); 7924 7925 // remember the old height 7926 oldHeight = container.offsetHeight; 7927 7928 // "Call insertNode(br) on the active range." 7929 range.insertNode(br); 7930 7931 // determine the new height 7932 newHeight = container.offsetHeight; 7933 7934 // "Call collapse(node, offset + 1) on the context object's 7935 // Selection." 7936 Aloha.getSelection().collapse(node, offset + 1); 7937 range.setStart(node, offset + 1); 7938 range.setEnd(node, offset + 1); 7939 7940 // "If br is the last descendant of container, let br be the result 7941 // of calling createElement("br") on the context object, then call 7942 // insertNode(br) on the active range." (Fix: only do this, if the container height did not change by inserting a single <br/>) 7943 // 7944 // Work around browser bugs: some browsers select the 7945 // newly-inserted node, not per spec. 7946 if (oldHeight == newHeight && !isDescendant(nextNode(br), container)) { 7947 // TODO check 7948 range.insertNode(createEndBreak()); 7949 Aloha.getSelection().collapse(node, offset + 1); 7950 range.setEnd(node, offset + 1); 7951 } 7952 7953 // "Abort these steps." 7954 return; 7955 } 7956 7957 // "If container's local name is "li", "dt", or "dd"; and either it has 7958 // no children or it has a single child and that child is a br:" 7959 7960 if (listRelatedElements[container.tagName] && (!container.hasChildNodes() || (container.childNodes.length == 1 && isNamedHtmlElement(container.firstChild, "br")))) { 7961 // "Split the parent of the one-node list consisting of container." 7962 splitParent([container], range); 7963 7964 // "If container has no children, call createElement("br") on the 7965 // context object and append the result as the last child of 7966 // container." 7967 // only do this, if inserting the br does NOT modify the offset height of the container 7968 // if (!container.hasChildNodes()) { 7969 // var oldHeight = container.offsetHeight, endBr = createEndBreak(); 7970 // container.appendChild(endBr); 7971 // if (container.offsetHeight !== oldHeight) { 7972 // container.removeChild(endBr); 7973 // } 7974 // } 7975 7976 // "If container is a dd or dt, and it is not an allowed child of 7977 // any of its ancestors in the same editing host, set the tag name 7978 // of container to the default single-line container name and let 7979 // container be the result." 7980 if (isHtmlElementInArray(container, ["dd", "dt"]) && $_(getAncestors(container)).every(function (ancestor) { return !inSameEditingHost(container, ancestor) || !isAllowedChild(container, ancestor); })) { 7981 container = setTagName(container, defaultSingleLineContainerName, range); 7982 } 7983 7984 // "Fix disallowed ancestors of container." 7985 fixDisallowedAncestors(container, range); 7986 7987 // fix invalid nested lists 7988 if (isNamedHtmlElement(container, 'li') && isNamedHtmlElement(container.nextSibling, "li") && isHtmlElementInArray(container.nextSibling.firstChild, ["ol", "ul"])) { 7989 // we found a li containing only a br followed by a li containing a list as first element: merge the two li's 7990 var listParent = container.nextSibling, 7991 length = container.nextSibling.childNodes.length; 7992 for (i = 0; i < length; i++) { 7993 // we always move the first child into the container 7994 container.appendChild(listParent.childNodes[0]); 7995 } 7996 listParent.parentNode.removeChild(listParent); 7997 } 7998 7999 // "Abort these steps." 8000 return; 8001 } 8002 8003 // special behaviour when pressing enter in the last empty paragraph, that is nested in a blockquote 8004 if (isNamedHtmlElement(container, "p") 8005 && isNamedHtmlElement(container.parentNode, "blockquote") 8006 && !container.nextSibling 8007 && (!container.hasChildNodes() 8008 || (container.childNodes.length === 1 8009 && isNamedHtmlElement(container.firstChild, "br")))) { 8010 jQuery(container.parentNode).after(container); 8011 return; 8012 } 8013 8014 // "Let new line range be a new range whose start is the same as 8015 // the active range's, and whose end is (container, length of 8016 // container)." 8017 var newLineRange = Aloha.createRange(); 8018 newLineRange.setStart(range.startContainer, range.startOffset); 8019 newLineRange.setEnd(container, getNodeLength(container)); 8020 8021 // "While new line range's start offset is zero and its start node is 8022 // not container, set its start to (parent of start node, index of 8023 // start node)." 8024 8025 while (newLineRange.startOffset == 0 && newLineRange.startContainer != container) { 8026 newLineRange.setStart(newLineRange.startContainer.parentNode, Dom.getIndexInParent(newLineRange.startContainer)); 8027 } 8028 8029 // "While new line range's start offset is the length of its start node 8030 // and its start node is not container, set its start to (parent of 8031 // start node, 1 + index of start node)." 8032 while (newLineRange.startOffset == getNodeLength(newLineRange.startContainer) && newLineRange.startContainer != container) { 8033 newLineRange.setStart(newLineRange.startContainer.parentNode, 1 + Dom.getIndexInParent(newLineRange.startContainer)); 8034 } 8035 8036 // "Let end of line be true if new line range contains either nothing 8037 // or a single br, and false otherwise." 8038 var containedInNewLineRange = getContainedNodes(newLineRange); 8039 var endOfLine = !containedInNewLineRange.length || (containedInNewLineRange.length == 1 && isNamedHtmlElement(containedInNewLineRange[0], "br")); 8040 8041 // "If the local name of container is "h1", "h2", "h3", "h4", "h5", or 8042 // "h6", and end of line is true, let new container name be the default 8043 // single-line container name." 8044 var newContainerName; 8045 if (/^H[1-6]$/.test(container.tagName) && endOfLine) { 8046 newContainerName = defaultSingleLineContainerName; 8047 8048 // "Otherwise, if the local name of container is "dt" and end of line 8049 // is true, let new container name be "dd"." 8050 } else if (container.tagName == "DT" && endOfLine) { 8051 newContainerName = "dd"; 8052 8053 // "Otherwise, if the local name of container is "dd" and end of line 8054 // is true, let new container name be "dt"." 8055 } else if (container.tagName == "DD" && endOfLine) { 8056 newContainerName = "dt"; 8057 8058 // "Otherwise, let new container name be the local name of container." 8059 } else { 8060 newContainerName = container.tagName.toLowerCase(); 8061 } 8062 8063 // "Let new container be the result of calling createElement(new 8064 // container name) on the context object." 8065 var newContainer = document.createElement(newContainerName); 8066 8067 // "Copy all non empty attributes of the container to new container." 8068 copyAttributes(container, newContainer); 8069 8070 // "If new container has an id attribute, unset it." 8071 newContainer.removeAttribute("id"); 8072 8073 // "Insert new container into the parent of container immediately after 8074 // container." 8075 container.parentNode.insertBefore(newContainer, container.nextSibling); 8076 8077 // "Let contained nodes be all nodes contained in new line range." 8078 var containedNodes = getAllContainedNodes(newLineRange); 8079 8080 // "Let frag be the result of calling extractContents() on new line 8081 // range." 8082 var frag = newLineRange.extractContents(); 8083 8084 // "Unset the id attribute (if any) of each Element descendant of frag 8085 // that is not in contained nodes." 8086 var descendants = getDescendants(frag); 8087 for (i = 0; i < descendants.length; i++) { 8088 if (descendants[i].nodeType == $_.Node.ELEMENT_NODE && $_(containedNodes).indexOf(descendants[i]) == -1) { 8089 descendants[i].removeAttribute("id"); 8090 } 8091 } 8092 8093 var fragChildren = [], 8094 fragChild = frag.firstChild; 8095 if (fragChild) { 8096 do { 8097 if (!isWhitespaceNode(fragChild)) { 8098 fragChildren.push(fragChild); 8099 } 8100 } while (null != (fragChild = fragChild.nextSibling)); 8101 } 8102 8103 // 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) 8104 if (isNamedHtmlElement(newContainer, 'li') && fragChildren.length && isHtmlElementInArray(fragChildren[0], ["ul", "ol"])) { 8105 oldHeight = newContainer.offsetHeight; 8106 var endBr = createEndBreak(); 8107 newContainer.appendChild(endBr); 8108 newHeight = newContainer.offsetHeight; 8109 if (oldHeight !== newHeight) { 8110 newContainer.removeChild(endBr); 8111 } 8112 } 8113 8114 // "Call appendChild(frag) on new container." 8115 newContainer.appendChild(frag); 8116 8117 // "If container has no visible children, call createElement("br") on 8118 // the context object, and append the result as the last child of 8119 // container." 8120 ensureContainerEditable(container); 8121 8122 // "If new container has no visible children, call createElement("br") 8123 // on the context object, and append the result as the last child of 8124 // new container." 8125 ensureContainerEditable(newContainer); 8126 8127 // "Call collapse(new container, 0) on the context object's Selection." 8128 Aloha.getSelection().collapse(newContainer, 0); 8129 range.setStart(newContainer, 0); 8130 range.setEnd(newContainer, 0); 8131 } 8132 }; 8133 8134 //@} 8135 ///// The insertText command ///// 8136 //@{ 8137 commands.inserttext = { 8138 action: function (value, range) { 8139 var i; 8140 8141 // "Delete the contents of the active range, with strip wrappers 8142 // false." 8143 deleteContents(range, { 8144 stripWrappers: false 8145 }); 8146 8147 // "If the active range's start node is neither editable nor an editing 8148 // host, abort these steps." 8149 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 8150 return; 8151 } 8152 8153 // "If value's length is greater than one:" 8154 if (value.length > 1) { 8155 // "For each element el in value, take the action for the 8156 // insertText command, with value equal to el." 8157 for (i = 0; i < value.length; i++) { 8158 commands.inserttext.action(value[i], range); 8159 } 8160 8161 // "Abort these steps." 8162 return; 8163 } 8164 8165 // "If value is the empty string, abort these steps." 8166 if (value == "") { 8167 return; 8168 } 8169 8170 // "If value is a newline (U+00A0), take the action for the 8171 // insertParagraph command and abort these steps." 8172 if (value == "\n") { 8173 commands.insertparagraph.action('', range); 8174 return; 8175 } 8176 8177 // "Let node and offset be the active range's start node and offset." 8178 var node = range.startContainer; 8179 var offset = range.startOffset; 8180 8181 // "If node has a child whose index is offset − 1, and that child is a 8182 // Text node, set node to that child, then set offset to node's 8183 // length." 8184 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && node.childNodes[offset - 1].nodeType == $_.Node.TEXT_NODE) { 8185 node = node.childNodes[offset - 1]; 8186 offset = getNodeLength(node); 8187 } 8188 8189 // "If node has a child whose index is offset, and that child is a Text 8190 // node, set node to that child, then set offset to zero." 8191 if (0 <= offset && offset < node.childNodes.length && node.childNodes[offset].nodeType == $_.Node.TEXT_NODE) { 8192 node = node.childNodes[offset]; 8193 offset = 0; 8194 } 8195 8196 // "If value is a space (U+0020), and either node is an Element whose 8197 // resolved value for "white-space" is neither "pre" nor "pre-wrap" or 8198 // node is not an Element but its parent is an Element whose resolved 8199 // value for "white-space" is neither "pre" nor "pre-wrap", set value 8200 // to a non-breaking space (U+00A0)." 8201 var refElement = node.nodeType == $_.Node.ELEMENT_NODE ? node : node.parentNode; 8202 if (value == " " && refElement.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(refElement).whiteSpace, ["pre", "pre-wrap"]) == -1) { 8203 value = "\xa0"; 8204 } 8205 8206 // "Record current overrides, and let overrides be the result." 8207 var overrides = recordCurrentOverrides(range); 8208 8209 // "If node is a Text node:" 8210 if (node.nodeType == $_.Node.TEXT_NODE) { 8211 // "Call insertData(offset, value) on node." 8212 node.insertData(offset, value); 8213 8214 // "Call collapse(node, offset) on the context object's Selection." 8215 Aloha.getSelection().collapse(node, offset); 8216 range.setStart(node, offset); 8217 8218 // "Call extend(node, offset + 1) on the context object's 8219 // Selection." 8220 Aloha.getSelection().extend(node, offset + 1); 8221 range.setEnd(node, offset + 1); 8222 8223 // "Otherwise:" 8224 } else { 8225 // "If node has only one child, which is a collapsed line break, 8226 // remove its child from it." 8227 // 8228 // FIXME: IE incorrectly returns false here instead of true 8229 // sometimes? 8230 if (node.childNodes.length == 1 && isCollapsedLineBreak(node.firstChild)) { 8231 node.removeChild(node.firstChild); 8232 } 8233 8234 // "Let text be the result of calling createTextNode(value) on the 8235 // context object." 8236 var text = document.createTextNode(value); 8237 8238 // "Call insertNode(text) on the active range." 8239 range.insertNode(text); 8240 8241 // "Call collapse(text, 0) on the context object's Selection." 8242 Aloha.getSelection().collapse(text, 0); 8243 range.setStart(text, 0); 8244 8245 // "Call extend(text, 1) on the context object's Selection." 8246 Aloha.getSelection().extend(text, 1); 8247 range.setEnd(text, 1); 8248 } 8249 8250 // "Restore states and values from overrides." 8251 restoreStatesAndValues(overrides, range); 8252 8253 // "Canonicalize whitespace at the active range's start." 8254 canonicalizeWhitespace(range.startContainer, range.startOffset); 8255 8256 // "Canonicalize whitespace at the active range's end." 8257 canonicalizeWhitespace(range.endContainer, range.endOffset); 8258 8259 // "Call collapseToEnd() on the context object's Selection." 8260 Aloha.getSelection().collapseToEnd(); 8261 range.collapse(false); 8262 } 8263 }; 8264 8265 //@} 8266 8267 ///// The insertUnorderedList command ///// 8268 //@{ 8269 commands.insertunorderedlist = { 8270 // "Toggle lists with tag name "ul"." 8271 action: function (value, range) { 8272 toggleLists("ul", range); 8273 }, 8274 // "True if the selection's list state is "mixed" or "mixed ul", false 8275 // otherwise." 8276 indeterm: function () { 8277 return (/^mixed( ul)?$/).test(getSelectionListState()); 8278 }, 8279 // "True if the selection's list state is "ul", false otherwise." 8280 state: function () { 8281 return getSelectionListState() == "ul"; 8282 } 8283 }; 8284 8285 //@} 8286 ///// The justifyCenter command ///// 8287 //@{ 8288 commands.justifycenter = { 8289 // "Justify the selection with alignment "center"." 8290 action: function (value, range) { 8291 justifySelection("center", range); 8292 }, 8293 indeterm: function () { 8294 // "Block-extend the active range. Return true if among visible 8295 // editable nodes that are contained in the result and have no 8296 // children, at least one has alignment value "center" and at least one 8297 // does not. Otherwise return false." 8298 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8299 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8300 }); 8301 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "center"; }) 8302 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "center"; }); 8303 }, 8304 state: function () { 8305 // "Block-extend the active range. Return true if there is at least one 8306 // visible editable node that is contained in the result and has no 8307 // children, and all such nodes have alignment value "center". 8308 // Otherwise return false." 8309 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8310 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8311 }); 8312 return nodes.length && $_(nodes).every(function (node) { 8313 return getAlignmentValue(node) == "center"; 8314 }); 8315 }, 8316 value: function () { 8317 // "Block-extend the active range, and return the alignment value of 8318 // the first visible editable node that is contained in the result and 8319 // has no children. If there is no such node, return "left"." 8320 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8321 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8322 }); 8323 if (nodes.length) { 8324 return getAlignmentValue(nodes[0]); 8325 } 8326 return "left"; 8327 } 8328 }; 8329 8330 //@} 8331 ///// The justifyFull command ///// 8332 //@{ 8333 commands.justifyfull = { 8334 // "Justify the selection with alignment "justify"." 8335 action: function (value, range) { 8336 justifySelection("justify", range); 8337 }, 8338 indeterm: function () { 8339 // "Block-extend the active range. Return true if among visible 8340 // editable nodes that are contained in the result and have no 8341 // children, at least one has alignment value "justify" and at least 8342 // one does not. Otherwise return false." 8343 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8344 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8345 }); 8346 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "justify"; }) 8347 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "justify"; }); 8348 }, 8349 state: function () { 8350 // "Block-extend the active range. Return true if there is at least one 8351 // visible editable node that is contained in the result and has no 8352 // children, and all such nodes have alignment value "justify". 8353 // Otherwise return false." 8354 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8355 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8356 }); 8357 return nodes.length && $_(nodes).every(function (node) { 8358 return getAlignmentValue(node) == "justify"; 8359 }); 8360 }, 8361 value: function () { 8362 // "Block-extend the active range, and return the alignment value of 8363 // the first visible editable node that is contained in the result and 8364 // has no children. If there is no such node, return "left"." 8365 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8366 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8367 }); 8368 if (nodes.length) { 8369 return getAlignmentValue(nodes[0]); 8370 } 8371 return "left"; 8372 } 8373 }; 8374 8375 //@} 8376 ///// The justifyLeft command ///// 8377 //@{ 8378 commands.justifyleft = { 8379 // "Justify the selection with alignment "left"." 8380 action: function (value, range) { 8381 justifySelection("left", range); 8382 }, 8383 indeterm: function () { 8384 // "Block-extend the active range. Return true if among visible 8385 // editable nodes that are contained in the result and have no 8386 // children, at least one has alignment value "left" and at least one 8387 // does not. Otherwise return false." 8388 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8389 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8390 }); 8391 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "left"; }) 8392 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "left"; }); 8393 }, 8394 state: function () { 8395 // "Block-extend the active range. Return true if there is at least one 8396 // visible editable node that is contained in the result and has no 8397 // children, and all such nodes have alignment value "left". Otherwise 8398 // return false." 8399 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8400 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8401 }); 8402 return nodes.length && $_(nodes).every(function (node) { 8403 return getAlignmentValue(node) == "left"; 8404 }); 8405 }, 8406 value: function () { 8407 // "Block-extend the active range, and return the alignment value of 8408 // the first visible editable node that is contained in the result and 8409 // has no children. If there is no such node, return "left"." 8410 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8411 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8412 }); 8413 if (nodes.length) { 8414 return getAlignmentValue(nodes[0]); 8415 } 8416 return "left"; 8417 } 8418 }; 8419 8420 //@} 8421 ///// The justifyRight command ///// 8422 //@{ 8423 commands.justifyright = { 8424 // "Justify the selection with alignment "right"." 8425 action: function (value, range) { 8426 justifySelection("right", range); 8427 }, 8428 indeterm: function () { 8429 // "Block-extend the active range. Return true if among visible 8430 // editable nodes that are contained in the result and have no 8431 // children, at least one has alignment value "right" and at least one 8432 // does not. Otherwise return false." 8433 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8434 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8435 }); 8436 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "right"; }) 8437 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "right"; }); 8438 }, 8439 state: function () { 8440 // "Block-extend the active range. Return true if there is at least one 8441 // visible editable node that is contained in the result and has no 8442 // children, and all such nodes have alignment value "right". 8443 // Otherwise return false." 8444 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8445 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8446 }); 8447 return nodes.length && $_(nodes).every(function (node) { 8448 return getAlignmentValue(node) == "right"; 8449 }); 8450 }, 8451 value: function () { 8452 // "Block-extend the active range, and return the alignment value of 8453 // the first visible editable node that is contained in the result and 8454 // has no children. If there is no such node, return "left"." 8455 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8456 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8457 }); 8458 if (nodes.length) { 8459 return getAlignmentValue(nodes[0]); 8460 } 8461 return "left"; 8462 } 8463 }; 8464 8465 //@} 8466 ///// The outdent command ///// 8467 //@{ 8468 commands.outdent = { 8469 action: function () { 8470 // "Let items be a list of all lis that are ancestor containers of the 8471 // range's start and/or end node." 8472 // 8473 // It's annoying to get this in tree order using functional stuff 8474 // without doing getDescendants(document), which is slow, so I do it 8475 // imperatively. 8476 var items = []; 8477 (function () { 8478 var ancestorContainer; 8479 for (ancestorContainer = getActiveRange().endContainer; 8480 ancestorContainer != getActiveRange().commonAncestorContainer; 8481 ancestorContainer = ancestorContainer.parentNode) { 8482 if (isNamedHtmlElement(ancestorContainer, "li")) { 8483 items.unshift(ancestorContainer); 8484 } 8485 } 8486 for (ancestorContainer = getActiveRange().startContainer; 8487 ancestorContainer; 8488 ancestorContainer = ancestorContainer.parentNode) { 8489 if (isNamedHtmlElement(ancestorContainer, "li")) { 8490 items.unshift(ancestorContainer); 8491 } 8492 } 8493 }()); 8494 8495 // "For each item in items, normalize sublists of item." 8496 $_(items).forEach(function (thisArg) { 8497 normalizeSublists(thisArg, getActiveRange()); 8498 }); 8499 8500 // "Block-extend the active range, and let new range be the result." 8501 var newRange = blockExtend(getActiveRange()); 8502 8503 // "Let node list be a list of nodes, initially empty." 8504 // 8505 // "For each node node contained in new range, append node to node list 8506 // if the last member of node list (if any) is not an ancestor of node; 8507 // node is editable; and either node has no editable descendants, or is 8508 // an ol or ul, or is an li whose parent is an ol or ul." 8509 var nodeList = getContainedNodes(newRange, function (node) { 8510 return isEditable(node) && (!$_(getDescendants(node)).some(isEditable) || isHtmlElementInArray(node, ["ol", "ul"]) || (isNamedHtmlElement(node, 'li') && isHtmlElementInArray(node.parentNode, ["ol", "ul"]))); 8511 }); 8512 8513 // "While node list is not empty:" 8514 while (nodeList.length) { 8515 // "While the first member of node list is an ol or ul or is not 8516 // the child of an ol or ul, outdent it and remove it from node 8517 // list." 8518 while (nodeList.length && (isHtmlElementInArray(nodeList[0], ["OL", "UL"]) || !isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]))) { 8519 outdentNode(nodeList.shift(), newRange); 8520 } 8521 8522 // "If node list is empty, break from these substeps." 8523 if (!nodeList.length) { 8524 break; 8525 } 8526 8527 // "Let sublist be a list of nodes, initially empty." 8528 var sublist = []; 8529 8530 // "Remove the first member of node list and append it to sublist." 8531 sublist.push(nodeList.shift()); 8532 8533 // "While the first member of node list is the nextSibling of the 8534 // last member of sublist, and the first member of node list is not 8535 // an ol or ul, remove the first member of node list and append it 8536 // to sublist." 8537 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElementInArray(nodeList[0], ["OL", "UL"])) { 8538 sublist.push(nodeList.shift()); 8539 } 8540 8541 // "Record the values of sublist, and let values be the result." 8542 var values = recordValues(sublist); 8543 8544 // "Split the parent of sublist, with new parent null." 8545 splitParent(sublist, newRange); 8546 8547 // "Fix disallowed ancestors of each member of sublist." 8548 $_(sublist).forEach(fixDisallowedAncestors); 8549 8550 // "Restore the values from values." 8551 restoreValues(values, newRange); 8552 } 8553 } 8554 }; 8555 8556 //@} 8557 8558 ////////////////////////////////// 8559 ///// Miscellaneous commands ///// 8560 ////////////////////////////////// 8561 8562 ///// The selectAll command ///// 8563 //@{ 8564 commands.selectall = { 8565 // Note, this ignores the whole globalRange/getActiveRange() thing and 8566 // works with actual selections. Not suitable for autoimplementation.html. 8567 action: function () { 8568 // "Let target be the body element of the context object." 8569 var target = document.body; 8570 8571 // "If target is null, let target be the context object's 8572 // documentElement." 8573 if (!target) { 8574 target = document.documentElement; 8575 } 8576 8577 // "If target is null, call getSelection() on the context object, and 8578 // call removeAllRanges() on the result." 8579 if (!target) { 8580 Aloha.getSelection().removeAllRanges(); 8581 8582 // "Otherwise, call getSelection() on the context object, and call 8583 // selectAllChildren(target) on the result." 8584 } else { 8585 Aloha.getSelection().selectAllChildren(target); 8586 } 8587 } 8588 }; 8589 8590 //@} 8591 ///// The styleWithCSS command ///// 8592 //@{ 8593 commands.stylewithcss = { 8594 action: function (value) { 8595 // "If value is an ASCII case-insensitive match for the string 8596 // "false", set the CSS styling flag to false. Otherwise, set the 8597 // CSS styling flag to true." 8598 cssStylingFlag = String(value).toLowerCase() != "false"; 8599 }, 8600 state: function () { 8601 return cssStylingFlag; 8602 } 8603 }; 8604 8605 //@} 8606 ///// The useCSS command ///// 8607 //@{ 8608 commands.usecss = { 8609 action: function (value) { 8610 // "If value is an ASCII case-insensitive match for the string "false", 8611 // set the CSS styling flag to true. Otherwise, set the CSS styling 8612 // flag to false." 8613 cssStylingFlag = String(value).toLowerCase() == "false"; 8614 } 8615 }; 8616 //@} 8617 8618 // Some final setup 8619 //@{ 8620 (function () { 8621 // Opera 11.50 doesn't implement Object.keys, so I have to make an explicit 8622 // temporary, which means I need an extra closure to not leak the temporaries 8623 // into the global namespace. >:( 8624 var commandNames = []; 8625 var command; 8626 for (command in commands) { 8627 if (commands.hasOwnProperty(command)) { 8628 commandNames.push(command); 8629 } 8630 } 8631 $_(commandNames).forEach(function (command) { 8632 // "If a command does not have a relevant CSS property specified, it 8633 // defaults to null." 8634 if (null == commands[command].relevantCssProperty) { 8635 commands[command].relevantCssProperty = null; 8636 } 8637 8638 // "If a command has inline command activated values defined but 8639 // nothing else defines when it is indeterminate, it is indeterminate 8640 // if among editable Text nodes effectively contained in the active 8641 // range, there is at least one whose effective command value is one of 8642 // the given values and at least one whose effective command value is 8643 // not one of the given values." 8644 if (null != commands[command].inlineCommandActivatedValues && null == commands[command].indeterm) { 8645 commands[command].indeterm = function (range) { 8646 var values = $_(getAllEffectivelyContainedNodes(range, function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; })) 8647 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8648 8649 var matchingValues = $_(values).filter(function (value) { 8650 return $_(commands[command].inlineCommandActivatedValues).indexOf(value) != -1; 8651 }); 8652 8653 return matchingValues.length >= 1 && values.length - matchingValues.length >= 1; 8654 }; 8655 } 8656 8657 // "If a command has inline command activated values defined, its state 8658 // is true if either no editable Text node is effectively contained in 8659 // the active range, and the active range's start node's effective 8660 // command value is one of the given values; or if there is at least 8661 // one editable Text node effectively contained in the active range, 8662 // and all of them have an effective command value equal to one of the 8663 // given values." 8664 if (null != commands[command].inlineCommandActivatedValues) { 8665 commands[command].state = function (range) { 8666 var nodes = getAllEffectivelyContainedNodes(range, function (node) { 8667 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8668 }); 8669 8670 if (nodes.length == 0) { 8671 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(range.startContainer, command)) != -1; 8672 } 8673 return $_(nodes).every(function (node) { 8674 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1; 8675 }); 8676 }; 8677 } 8678 8679 // "If a command is a standard inline value command, it is 8680 // indeterminate if among editable Text nodes that are effectively 8681 // contained in the active range, there are two that have distinct 8682 // effective command values. Its value is the effective command value 8683 // of the first editable Text node that is effectively contained in the 8684 // active range, or if there is no such node, the effective command 8685 // value of the active range's start node." 8686 if (null != commands[command].standardInlineValueCommand) { 8687 commands[command].indeterm = function () { 8688 var values = $_(getAllEffectivelyContainedNodes(getActiveRange())).filter(function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; }, true) 8689 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8690 var i; 8691 for (i = 1; i < values.length; i++) { 8692 if (values[i] != values[i - 1]) { 8693 return true; 8694 } 8695 } 8696 return false; 8697 }; 8698 8699 commands[command].value = function (range) { 8700 var refNode = getAllEffectivelyContainedNodes(range, function (node) { 8701 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8702 })[0]; 8703 8704 if (typeof refNode == "undefined") { 8705 refNode = range.startContainer; 8706 } 8707 8708 return getEffectiveCommandValue(refNode, command); 8709 }; 8710 } 8711 }); 8712 }()); 8713 //@} 8714 return { 8715 commands: commands, 8716 execCommand: myExecCommand, 8717 queryCommandIndeterm: myQueryCommandIndeterm, 8718 queryCommandState: myQueryCommandState, 8719 queryCommandValue: myQueryCommandValue, 8720 queryCommandEnabled: myQueryCommandEnabled, 8721 queryCommandSupported: myQueryCommandSupported, 8722 copyAttributes: copyAttributes, 8723 createEndBreak: createEndBreak, 8724 isEndBreak: isEndBreak, 8725 ensureContainerEditable: ensureContainerEditable, 8726 isEditingHost: isEditingHost, 8727 isEditable: isEditable, 8728 getStateOverride: getStateOverride, 8729 setStateOverride: setStateOverride, 8730 resetOverrides: resetOverrides, 8731 unsetStateOverride: unsetStateOverride 8732 }; 8733 }); // end define 8734 // vim: foldmarker=@{,@} foldmethod=marker 8735