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 var newParentParentNode = newParent.parentNode; 1944 if (!newParentParentNode) { 1945 // "Insert new parent into the parent of the first member of node list 1946 // immediately before the first member of node list." 1947 nodeList[0].parentNode.insertBefore(newParent, nodeList[0]); 1948 1949 // "If any range has a boundary point with node equal to the parent of 1950 // new parent and offset equal to the index of new parent, add one to 1951 // that boundary point's offset." 1952 // 1953 // Try to fix range 1954 var startContainer = range.startContainer, 1955 startOffset = range.startOffset, 1956 endContainer = range.endContainer, 1957 endOffset = range.endOffset, 1958 newParentIndex = Dom.getIndexInParent(newParent); 1959 1960 if (startOffset >= newParentIndex && startContainer == newParentParentNode) { 1961 range.setStart(startContainer, startOffset + 1); 1962 } 1963 if (endOffset >= newParentIndex && endContainer == newParentParentNode) { 1964 range.setEnd(endContainer, endOffset + 1); 1965 } 1966 1967 // Only try to fix the global range. TODO remove globalRange here 1968 if (globalRange && globalRange !== range) { 1969 startContainer = globalRange.startContainer; 1970 startOffset = globalRange.startOffset; 1971 endContainer = globalRange.endContainer; 1972 endOffset = globalRange.endOffset; 1973 if (startContainer == newParentParentNode && startOffset >= newParentIndex) { 1974 globalRange.setStart(startContainer, startOffset + 1); 1975 } 1976 if (endContainer == newParentParentNode && endOffset >= newParentIndex) { 1977 globalRange.setEnd(endContainer, endOffset + 1); 1978 } 1979 } 1980 } 1981 1982 // "Let original parent be the parent of the first member of node list." 1983 var originalParent = nodeList[0].parentNode; 1984 1985 // "If new parent is before the first member of node list in tree order:" 1986 if (isBefore(newParent, nodeList[0])) { 1987 // "If new parent is not an inline node, but the last child of new 1988 // parent and the first member of node list are both inline nodes, and 1989 // the last child of new parent is not a br, call createElement("br") 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 newParentParentNode.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 2167 "H4": prohibitedHeadingNestingMap, 2168 "H5": prohibitedHeadingNestingMap, 2169 "H6": prohibitedHeadingNestingMap, 2170 "TD": prohibitedTableNestingMap, 2171 "TH": prohibitedTableNestingMap, 2172 // this is the same as namesOfElementsWithInlineContentsMap excluding a and h1-h6 elements above 2173 "ABBR": prohibitedParagraphChildNamesMap, 2174 "B": prohibitedParagraphChildNamesMap, 2175 "BDI": prohibitedParagraphChildNamesMap, 2176 "BDO": prohibitedParagraphChildNamesMap, 2177 "CITE": prohibitedParagraphChildNamesMap, 2178 "CODE": prohibitedParagraphChildNamesMap, 2179 "DFN": prohibitedParagraphChildNamesMap, 2180 "EM": prohibitedParagraphChildNamesMap, 2181 "I": prohibitedParagraphChildNamesMap, 2182 "KBD": prohibitedParagraphChildNamesMap, 2183 "MARK": prohibitedParagraphChildNamesMap, 2184 "P": prohibitedParagraphChildNamesMap, 2185 "PRE": prohibitedParagraphChildNamesMap, 2186 "Q": prohibitedParagraphChildNamesMap, 2187 "RP": prohibitedParagraphChildNamesMap, 2188 "RT": prohibitedParagraphChildNamesMap, 2189 "RUBY": prohibitedParagraphChildNamesMap, 2190 "S": prohibitedParagraphChildNamesMap, 2191 "SAMP": prohibitedParagraphChildNamesMap, 2192 "SMALL": prohibitedParagraphChildNamesMap, 2193 "SPAN": prohibitedParagraphChildNamesMap, 2194 "STRONG": prohibitedParagraphChildNamesMap, 2195 "SUB": prohibitedParagraphChildNamesMap, 2196 "SUP": prohibitedParagraphChildNamesMap, 2197 "U": prohibitedParagraphChildNamesMap, 2198 "VAR": prohibitedParagraphChildNamesMap, 2199 "ACRONYM": prohibitedParagraphChildNamesMap, 2200 "LISTING": prohibitedParagraphChildNamesMap, 2201 "STRIKE": prohibitedParagraphChildNamesMap, 2202 "XMP": prohibitedParagraphChildNamesMap, 2203 "BIG": prohibitedParagraphChildNamesMap, 2204 "BLINK": prohibitedParagraphChildNamesMap, 2205 "FONT": prohibitedParagraphChildNamesMap, 2206 2207 "MARQUEE": prohibitedParagraphChildNamesMap, 2208 "TT": prohibitedParagraphChildNamesMap 2209 }; 2210 2211 // "An element with inline contents is an HTML element whose local name is a 2212 // name of an element with inline contents." 2213 function isElementWithInlineContents(node) { 2214 return isMappedHtmlElement(node, namesOfElementsWithInlineContentsMap); 2215 } 2216 2217 function isAllowedChild(child, parent_) { 2218 // "If parent is "colgroup", "table", "tbody", "tfoot", "thead", "tr", or 2219 // an HTML element with local name equal to one of those, and child is a 2220 // Text node whose data does not consist solely of space characters, return 2221 // false." 2222 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)) { 2223 return false; 2224 } 2225 2226 // "If parent is "script", "style", "plaintext", or "xmp", or an HTML 2227 // element with local name equal to one of those, and child is not a Text 2228 // node, return false." 2229 if ((scriptRelatedElements[parent_] || isHtmlElementInArray(parent_, ["script", "style", "plaintext", "xmp"])) && (typeof child != "object" || child.nodeType != $_.Node.TEXT_NODE)) { 2230 return false; 2231 } 2232 2233 // "If child is a Document, DocumentFragment, or DocumentType, return 2234 // false." 2235 if (typeof child == "object" && (child.nodeType == $_.Node.DOCUMENT_NODE || child.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE || child.nodeType == $_.Node.DOCUMENT_TYPE_NODE)) { 2236 return false; 2237 } 2238 2239 // "If child is an HTML element, set child to the local name of child." 2240 if (isAnyHtmlElement(child)) { 2241 child = child.tagName.toLowerCase(); 2242 } 2243 2244 // "If child is not a string, return true." 2245 if (typeof child != "string") { 2246 return true; 2247 } 2248 2249 // "If parent is an HTML element:" 2250 if (isAnyHtmlElement(parent_)) { 2251 // "If child is "a", and parent or some ancestor of parent is an a, 2252 // return false." 2253 // 2254 // "If child is a prohibited paragraph child name and parent or some 2255 // ancestor of parent is an element with inline contents, return 2256 // false." 2257 // 2258 // "If child is "h1", "h2", "h3", "h4", "h5", or "h6", and parent or 2259 // some ancestor of parent is an HTML element with local name "h1", 2260 // "h2", "h3", "h4", "h5", or "h6", return false." 2261 var ancestor = parent_; 2262 while (ancestor) { 2263 if (child == "a" && isNamedHtmlElement(ancestor, 'a')) { 2264 return false; 2265 } 2266 if (prohibitedParagraphChildNamesMap[child.toUpperCase()] && isElementWithInlineContents(ancestor)) { 2267 return false; 2268 } 2269 if (/^h[1-6]$/.test(child) && isAnyHtmlElement(ancestor) && /^H[1-6]$/.test(ancestor.tagName)) { 2270 return false; 2271 } 2272 ancestor = ancestor.parentNode; 2273 } 2274 2275 // "Let parent be the local name of parent." 2276 parent_ = parent_.tagName.toLowerCase(); 2277 } 2278 2279 // "If parent is an Element or DocumentFragment, return true." 2280 if (typeof parent_ == "object" && (parent_.nodeType == $_.Node.ELEMENT_NODE || parent_.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE)) { 2281 return true; 2282 } 2283 2284 // "If parent is not a string, return false." 2285 if (typeof parent_ != "string") { 2286 return false; 2287 } 2288 2289 // "If parent is on the left-hand side of an entry on the following list, 2290 // then return true if child is listed on the right-hand side of that 2291 // entry, and false otherwise." 2292 switch (parent_) { 2293 case "colgroup": 2294 return child == "col"; 2295 case "table": 2296 return jQuery.inArray(child, ["caption", "col", "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1; 2297 case "tbody": 2298 case "thead": 2299 case "tfoot": 2300 return jQuery.inArray(child, ["td", "th", "tr"]) != -1; 2301 case "tr": 2302 return jQuery.inArray(child, ["td", "th"]) != -1; 2303 case "dl": 2304 return jQuery.inArray(child, ["dt", "dd"]) != -1; 2305 case "dir": 2306 case "ol": 2307 case "ul": 2308 return jQuery.inArray(child, ["dir", "li", "ol", "ul"]) != -1; 2309 case "hgroup": 2310 return (/^h[1-6]$/).test(child); 2311 } 2312 2313 // "If child is "body", "caption", "col", "colgroup", "frame", "frameset", 2314 // "head", "html", "tbody", "td", "tfoot", "th", "thead", or "tr", return 2315 // false." 2316 if (jQuery.inArray(child, ["body", "caption", "col", "colgroup", "frame", "frameset", "head", "html", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1) { 2317 return false; 2318 } 2319 2320 // "If child is "dd" or "dt" and parent is not "dl", return false." 2321 if (jQuery.inArray(child, ["dd", "dt"]) != -1 && parent_ != "dl") { 2322 return false; 2323 2324 } 2325 2326 // "If child is "li" and parent is not "ol" or "ul", return false." 2327 if (child == "li" && parent_ != "ol" && parent_ != "ul") { 2328 return false; 2329 } 2330 2331 // "If parent is on the left-hand side of an entry on the following list 2332 // and child is listed on the right-hand side of that entry, return false." 2333 var leftSide = prohibitedNestingCombinationsMap[parent_.toUpperCase()]; 2334 if (leftSide) { 2335 var rightSide = leftSide[child.toUpperCase()]; 2336 if (rightSide) { 2337 return false; 2338 } 2339 } 2340 2341 // "Return true." 2342 return true; 2343 } 2344 2345 2346 //@} 2347 2348 ////////////////////////////////////// 2349 ///// Inline formatting commands ///// 2350 ////////////////////////////////////// 2351 2352 ///// Inline formatting command definitions ///// 2353 //@{ 2354 2355 // "A node node is effectively contained in a range range if range is not 2356 // collapsed, and at least one of the following holds:" 2357 function isEffectivelyContained(node, range) { 2358 if (range.collapsed) { 2359 return false; 2360 } 2361 2362 // "node is contained in range." 2363 if (isContained(node, range)) { 2364 return true; 2365 } 2366 2367 // "node is range's start node, it is a Text node, and its length is 2368 // different from range's start offset." 2369 if (node == range.startContainer && node.nodeType == $_.Node.TEXT_NODE && getNodeLength(node) != range.startOffset) { 2370 return true; 2371 } 2372 2373 // "node is range's end node, it is a Text node, and range's end offset is 2374 // not 0." 2375 if (node == range.endContainer && node.nodeType == $_.Node.TEXT_NODE && range.endOffset != 0) { 2376 return true; 2377 } 2378 2379 // "node has at least one child; and all its children are effectively 2380 // contained in range; and either range's start node is not a descendant of 2381 // node or is not a Text node or range's start offset is zero; and either 2382 // range's end node is not a descendant of node or is not a Text node or 2383 // range's end offset is its end node's length." 2384 if (node.hasChildNodes() && $_(node.childNodes).every(function (child) { return isEffectivelyContained(child, range); }) 2385 && (!isDescendant(range.startContainer, node) 2386 || range.startContainer.nodeType != $_.Node.TEXT_NODE 2387 || range.startOffset == 0) 2388 && (!isDescendant(range.endContainer, node) 2389 || range.endContainer.nodeType != $_.Node.TEXT_NODE 2390 || range.endOffset == getNodeLength(range.endContainer))) { 2391 return true; 2392 } 2393 2394 return false; 2395 } 2396 2397 // Like get(All)ContainedNodes(), but for effectively contained nodes. 2398 function getEffectivelyContainedNodes(range, condition) { 2399 if (typeof condition == "undefined") { 2400 condition = function () { 2401 return true; 2402 }; 2403 } 2404 var node = range.startContainer; 2405 while (isEffectivelyContained(node.parentNode, range)) { 2406 node = node.parentNode; 2407 } 2408 2409 var stop = nextNodeDescendants(range.endContainer); 2410 2411 var nodeList = []; 2412 while (isBefore(node, stop)) { 2413 if (isEffectivelyContained(node, range) && condition(node)) { 2414 nodeList.push(node); 2415 node = nextNodeDescendants(node); 2416 continue; 2417 } 2418 node = nextNode(node); 2419 } 2420 return nodeList; 2421 } 2422 2423 function getAllEffectivelyContainedNodes(range, condition) { 2424 if (typeof condition == "undefined") { 2425 condition = function () { 2426 return true; 2427 }; 2428 } 2429 var node = range.startContainer; 2430 while (isEffectivelyContained(node.parentNode, range)) { 2431 node = node.parentNode; 2432 } 2433 2434 var stop = nextNodeDescendants(range.endContainer); 2435 2436 var nodeList = []; 2437 while (isBefore(node, stop)) { 2438 if (isEffectivelyContained(node, range) && condition(node)) { 2439 nodeList.push(node); 2440 } 2441 node = nextNode(node); 2442 } 2443 return nodeList; 2444 } 2445 2446 // "A modifiable element is a b, em, i, s, span, strong, sub, sup, or u element 2447 // with no attributes except possibly style; or a font element with no 2448 // attributes except possibly style, color, face, and/or size; or an a element 2449 // with no attributes except possibly style and/or href." 2450 function isModifiableElement(node) { 2451 if (!isAnyHtmlElement(node)) { 2452 return false; 2453 } 2454 2455 if (jQuery.inArray(node.tagName, ["B", "EM", "I", "S", "SPAN", "STRIKE", "STRONG", "SUB", "SUP", "U"]) != -1) { 2456 if (node.attributes.length == 0) { 2457 return true; 2458 } 2459 2460 if (node.attributes.length == 1 && hasAttribute(node, "style")) { 2461 return true; 2462 } 2463 } 2464 2465 if (node.tagName == "FONT" || node.tagName == "A") { 2466 var numAttrs = node.attributes.length; 2467 2468 if (hasAttribute(node, "style")) { 2469 numAttrs--; 2470 } 2471 2472 if (node.tagName == "FONT") { 2473 if (hasAttribute(node, "color")) { 2474 numAttrs--; 2475 } 2476 2477 if (hasAttribute(node, "face")) { 2478 numAttrs--; 2479 } 2480 2481 if (hasAttribute(node, "size")) { 2482 numAttrs--; 2483 } 2484 } 2485 2486 if (node.tagName == "A" && hasAttribute(node, "href")) { 2487 numAttrs--; 2488 } 2489 2490 if (numAttrs == 0) { 2491 return true; 2492 } 2493 } 2494 2495 return false; 2496 } 2497 2498 function isSimpleModifiableElement(node) { 2499 // "A simple modifiable element is an HTML element for which at least one 2500 // of the following holds:" 2501 if (!isAnyHtmlElement(node)) { 2502 return false; 2503 } 2504 2505 // Only these elements can possibly be a simple modifiable element. 2506 if (jQuery.inArray(node.tagName, ["A", "B", "EM", "FONT", "I", "S", "SPAN", "STRIKE", "STRONG", "SUB", "SUP", "U"]) == -1) { 2507 return false; 2508 } 2509 2510 // "It is an a, b, em, font, i, s, span, strike, strong, sub, sup, or u 2511 // element with no attributes." 2512 if (node.attributes.length == 0) { 2513 return true; 2514 } 2515 2516 // If it's got more than one attribute, everything after this fails. 2517 if (node.attributes.length > 1) { 2518 return false; 2519 } 2520 2521 // "It is an a, b, em, font, i, s, span, strike, strong, sub, sup, or u 2522 // element with exactly one attribute, which is style, which sets no CSS 2523 // properties (including invalid or unrecognized properties)." 2524 // 2525 // Not gonna try for invalid or unrecognized. 2526 if (hasAttribute(node, "style") && getStyleLength(node) == 0) { 2527 return true; 2528 } 2529 2530 // "It is an a element with exactly one attribute, which is href." 2531 if (node.tagName == "A" && hasAttribute(node, "href")) { 2532 return true; 2533 } 2534 2535 // "It is a font element with exactly one attribute, which is either color, 2536 // face, or size." 2537 if (node.tagName == "FONT" && (hasAttribute(node, "color") || hasAttribute(node, "face") || hasAttribute(node, "size"))) { 2538 return true; 2539 } 2540 2541 // "It is a b or strong element with exactly one attribute, which is style, 2542 // and the style attribute sets exactly one CSS property (including invalid 2543 // or unrecognized properties), which is "font-weight"." 2544 if ((node.tagName == "B" || node.tagName == "STRONG") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.fontWeight != "") { 2545 return true; 2546 } 2547 2548 // "It is an i or em element with exactly one attribute, which is style, 2549 // and the style attribute sets exactly one CSS property (including invalid 2550 // or unrecognized properties), which is "font-style"." 2551 if ((node.tagName == "I" || node.tagName == "EM") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.fontStyle != "") { 2552 return true; 2553 } 2554 2555 // "It is an a, font, or span element with exactly one attribute, which is 2556 // style, and the style attribute sets exactly one CSS property (including 2557 // invalid or unrecognized properties), and that property is not 2558 // "text-decoration"." 2559 if ((node.tagName == "A" || node.tagName == "FONT" || node.tagName == "SPAN") && hasAttribute(node, "style") && getStyleLength(node) == 1 && node.style.textDecoration == "") { 2560 return true; 2561 } 2562 2563 // "It is an a, font, s, span, strike, or u element with exactly one 2564 // attribute, which is style, and the style attribute sets exactly one CSS 2565 // property (including invalid or unrecognized properties), which is 2566 // "text-decoration", which is set to "line-through" or "underline" or 2567 // "overline" or "none"." 2568 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")) { 2569 return true; 2570 } 2571 2572 return false; 2573 } 2574 2575 // "Two quantities are equivalent values for a command if either both are null, 2576 // or both are strings and they're equal and the command does not define any 2577 // equivalent values, or both are strings and the command defines equivalent 2578 // values and they match the definition." 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 // "Return null." 2776 return null; 2777 } 2778 2779 // "If command is "subscript" or "superscript":" 2780 if (command == "subscript" || command == "superscript") { 2781 // "If element is a sup, return "superscript"." 2782 if (isNamedHtmlElement(element, 'sup')) { 2783 return "superscript"; 2784 } 2785 2786 // "If element is a sub, return "subscript"." 2787 if (isNamedHtmlElement(element, 'sub')) { 2788 return "subscript"; 2789 } 2790 2791 // "Return null." 2792 return null; 2793 } 2794 2795 // "If command is "strikethrough", and element has a style attribute set, 2796 // and that attribute sets "text-decoration":" 2797 if (command == "strikethrough" && element.style.textDecoration != "") { 2798 // "If element's style attribute sets "text-decoration" to a value 2799 // containing "line-through", return "line-through"." 2800 if (element.style.textDecoration.indexOf("line-through") != -1) { 2801 return "line-through"; 2802 } 2803 2804 // "Return null." 2805 return null; 2806 } 2807 2808 // "If command is "strikethrough" and element is a s or strike element, 2809 // return "line-through"." 2810 if (command == "strikethrough" && isHtmlElementInArray(element, ["S", "STRIKE"])) { 2811 return "line-through"; 2812 } 2813 2814 // "If command is "underline", and element has a style attribute set, and 2815 // that attribute sets "text-decoration":" 2816 if (command == "underline" && element.style.textDecoration != "") { 2817 // "If element's style attribute sets "text-decoration" to a value 2818 // containing "underline", return "underline"." 2819 if (element.style.textDecoration.indexOf("underline") != -1) { 2820 return "underline"; 2821 } 2822 2823 // "Return null." 2824 return null; 2825 } 2826 2827 // "If command is "underline" and element is a u element, return 2828 // "underline"." 2829 if (command == "underline" && isNamedHtmlElement(element, 'U')) { 2830 return "underline"; 2831 } 2832 2833 // "Let property be the relevant CSS property for command." 2834 var property = commands[command].relevantCssProperty; 2835 2836 // "If property is null, return null." 2837 if (property === null) { 2838 return null; 2839 } 2840 2841 // "If element has a style attribute set, and that attribute has the 2842 // effect of setting property, return the value that it sets property to." 2843 if (element.style[property] != "") { 2844 return element.style[property]; 2845 } 2846 2847 // "If element is a font element that has an attribute whose effect is 2848 // to create a presentational hint for property, return the value that the 2849 // hint sets property to. (For a size of 7, this will be the non-CSS value 2850 // "xxx-large".)" 2851 if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") { 2852 if (property == "color" && hasAttribute(element, "color")) { 2853 return element.color; 2854 } 2855 if (property == "fontFamily" && hasAttribute(element, "face")) { 2856 return element.face; 2857 } 2858 if (property == "fontSize" && hasAttribute(element, "size")) { 2859 // This is not even close to correct in general. 2860 var size = parseInt(element.size, 10); 2861 if (size < 1) { 2862 size = 1; 2863 } 2864 if (size > 7) { 2865 size = 7; 2866 } 2867 return { 2868 1: "xx-small", 2869 2: "small", 2870 3: "medium", 2871 4: "large", 2872 5: "x-large", 2873 6: "xx-large", 2874 7: "xxx-large" 2875 }[size]; 2876 } 2877 } 2878 2879 // "If element is in the following list, and property is equal to the 2880 // CSS property name listed for it, return the string listed for it." 2881 // 2882 // A list follows, whose meaning is copied here. 2883 if (property == "fontWeight" && (element.tagName == "B" || element.tagName == "STRONG")) { 2884 return "bold"; 2885 } 2886 if (property == "fontStyle" && (element.tagName == "I" || element.tagName == "EM")) { 2887 return "italic"; 2888 } 2889 2890 // "Return null." 2891 return null; 2892 } 2893 2894 function reorderModifiableDescendants(node, command, newValue, range) { 2895 // "Let candidate equal node." 2896 var candidate = node; 2897 2898 // "While candidate is a modifiable element, and candidate has exactly one 2899 // child, and that child is also a modifiable element, and candidate is not 2900 // a simple modifiable element or candidate's specified command value for 2901 // command is not equivalent to new value, set candidate to its child." 2902 while (isModifiableElement(candidate) && candidate.childNodes.length == 1 && isModifiableElement(candidate.firstChild) && (!isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue))) { 2903 candidate = candidate.firstChild; 2904 } 2905 2906 // "If candidate is node, or is not a simple modifiable element, or its 2907 // specified command value is not equivalent to new value, or its effective 2908 // command value is not loosely equivalent to new value, abort these 2909 // steps." 2910 if (candidate == node || !isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue) || !areLooselyEquivalentValues(command, getEffectiveCommandValue(candidate, command), newValue)) { 2911 return; 2912 } 2913 2914 // "While candidate has children, insert the first child of candidate into 2915 // candidate's parent immediately before candidate, preserving ranges." 2916 while (candidate.hasChildNodes()) { 2917 movePreservingRanges(candidate.firstChild, candidate.parentNode, Dom.getIndexInParent(candidate), range); 2918 } 2919 2920 // "Insert candidate into node's parent immediately after node." 2921 node.parentNode.insertBefore(candidate, node.nextSibling); 2922 2923 // "Append the node as the last child of candidate, preserving ranges." 2924 movePreservingRanges(node, candidate, -1, range); 2925 } 2926 2927 var recordValuesCommands = ["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"]; 2928 2929 function recordValues(nodeList) { 2930 // "Let values be a list of (node, command, specified command value) 2931 // triples, initially empty." 2932 var values = []; 2933 2934 // "For each node in node list, for each command in the list "subscript", 2935 // "bold", "fontName", "fontSize", "foreColor", "hiliteColor", "italic", 2936 // "strikethrough", and "underline" in that order:" 2937 2938 // Ensure we have a plain array to avoid the potential performance 2939 // overhead of a NodeList 2940 var nodes = jQuery.makeArray(nodeList); 2941 var i, j; 2942 var node; 2943 var command; 2944 var ancestor; 2945 var specifiedCommandValue; 2946 for (i = 0; i < nodes.length; i++) { 2947 node = nodes[i]; 2948 for (j = 0; j < recordValuesCommands.length; j++) { 2949 command = recordValuesCommands[j]; 2950 2951 // "Let ancestor equal node." 2952 ancestor = node; 2953 2954 // "If ancestor is not an Element, set it to its parent." 2955 if (ancestor.nodeType != 1) { 2956 ancestor = ancestor.parentNode; 2957 } 2958 2959 // "While ancestor is an Element and its specified command value 2960 // for command is null, set it to its parent." 2961 specifiedCommandValue = null; 2962 while (ancestor && ancestor.nodeType == 1 && (specifiedCommandValue = getSpecifiedCommandValue(ancestor, command)) === null) { 2963 ancestor = ancestor.parentNode; 2964 } 2965 2966 // "If ancestor is an Element, add (node, command, ancestor's 2967 // specified command value for command) to values. Otherwise add 2968 // (node, command, null) to values." 2969 values.push([node, command, specifiedCommandValue]); 2970 } 2971 } 2972 2973 // "Return values." 2974 return values; 2975 } 2976 2977 //@} 2978 ///// Clearing an element's value ///// 2979 //@{ 2980 2981 function clearValue(element, command, range) { 2982 // "If element is not editable, return the empty list." 2983 if (!isEditable(element)) { 2984 return []; 2985 } 2986 2987 // "If element's specified command value for command is null, return the 2988 // empty list." 2989 if (getSpecifiedCommandValue(element, command) === null) { 2990 return []; 2991 } 2992 2993 // "If element is a simple modifiable element:" 2994 if (isSimpleModifiableElement(element)) { 2995 // "Let children be the children of element." 2996 var children = Array.prototype.slice.call(toArray(element.childNodes)); 2997 2998 // "For each child in children, insert child into element's parent 2999 // immediately before element, preserving ranges." 3000 var i; 3001 for (i = 0; i < children.length; i++) { 3002 movePreservingRanges(children[i], element.parentNode, Dom.getIndexInParent(element), range); 3003 } 3004 3005 // "Remove element from its parent." 3006 element.parentNode.removeChild(element); 3007 3008 // "Return children." 3009 return children; 3010 } 3011 3012 // "If command is "strikethrough", and element has a style attribute that 3013 // sets "text-decoration" to some value containing "line-through", delete 3014 // "line-through" from the value." 3015 if (command == "strikethrough" && element.style.textDecoration.indexOf("line-through") != -1) { 3016 if (element.style.textDecoration == "line-through") { 3017 element.style.textDecoration = ""; 3018 } else { 3019 element.style.textDecoration = element.style.textDecoration.replace("line-through", ""); 3020 } 3021 if (element.getAttribute("style") == "") { 3022 element.removeAttribute("style"); 3023 } 3024 } 3025 3026 // "If command is "underline", and element has a style attribute that sets 3027 // "text-decoration" to some value containing "underline", delete 3028 // "underline" from the value." 3029 if (command == "underline" && element.style.textDecoration.indexOf("underline") != -1) { 3030 if (element.style.textDecoration == "underline") { 3031 element.style.textDecoration = ""; 3032 } else { 3033 element.style.textDecoration = element.style.textDecoration.replace("underline", ""); 3034 } 3035 if (element.getAttribute("style") == "") { 3036 element.removeAttribute("style"); 3037 } 3038 } 3039 3040 // "If the relevant CSS property for command is not null, unset the CSS 3041 // property property of element." 3042 if (commands[command].relevantCssProperty !== null) { 3043 element.style[commands[command].relevantCssProperty] = ''; 3044 if (element.getAttribute("style") == "") { 3045 element.removeAttribute("style"); 3046 } 3047 } 3048 3049 // "If element is a font element:" 3050 if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") { 3051 // "If command is "foreColor", unset element's color attribute, if set." 3052 if (command == "forecolor") { 3053 element.removeAttribute("color"); 3054 } 3055 3056 // "If command is "fontName", unset element's face attribute, if set." 3057 if (command == "fontname") { 3058 element.removeAttribute("face"); 3059 } 3060 3061 // "If command is "fontSize", unset element's size attribute, if set." 3062 if (command == "fontsize") { 3063 element.removeAttribute("size"); 3064 } 3065 } 3066 3067 // "If element is an a element and command is "createLink" or "unlink", 3068 // unset the href property of element." 3069 if (isNamedHtmlElement(element, 'A') && (command == "createlink" || command == "unlink")) { 3070 element.removeAttribute("href"); 3071 } 3072 3073 // "If element's specified command value for command is null, return the 3074 // empty list." 3075 if (getSpecifiedCommandValue(element, command) === null) { 3076 return []; 3077 } 3078 3079 // "Set the tag name of element to "span", and return the one-node list 3080 // consisting of the result." 3081 return [setTagName(element, "span", range)]; 3082 } 3083 3084 //@} 3085 ///// Forcing the value of a node ///// 3086 //@{ 3087 3088 function forceValue(node, command, newValue, range) { 3089 var children = []; 3090 var i; 3091 var specifiedValue; 3092 3093 // "If node's parent is null, abort this algorithm." 3094 if (!node.parentNode) { 3095 return; 3096 } 3097 3098 // "If new value is null, abort this algorithm." 3099 if (newValue === null) { 3100 return; 3101 } 3102 3103 // "If node is an allowed child of "span":" 3104 if (isAllowedChild(node, "span")) { 3105 // "Reorder modifiable descendants of node's previousSibling." 3106 reorderModifiableDescendants(node.previousSibling, command, newValue, range); 3107 3108 // "Reorder modifiable descendants of node's nextSibling." 3109 reorderModifiableDescendants(node.nextSibling, command, newValue, range); 3110 3111 // "Wrap the one-node list consisting of node, with sibling criteria 3112 // returning true for a simple modifiable element whose specified 3113 // command value is equivalent to new value and whose effective command 3114 // value is loosely equivalent to new value and false otherwise, and 3115 // with new parent instructions returning null." 3116 wrap( 3117 [node], 3118 function (node) { 3119 return isSimpleModifiableElement(node) && areEquivalentValues(command, getSpecifiedCommandValue(node, command), newValue) && areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue); 3120 }, 3121 function () { 3122 return null; 3123 }, 3124 range 3125 ); 3126 } 3127 3128 // "If the effective command value of command is loosely equivalent to new 3129 // value on node, abort this algorithm." 3130 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3131 return; 3132 } 3133 3134 // "If node is not an allowed child of "span":" 3135 if (!isAllowedChild(node, "span")) { 3136 // "Let children be all children of node, omitting any that are 3137 // Elements whose specified command value for command is neither null 3138 // nor equivalent to new value." 3139 for (i = 0; i < node.childNodes.length; i++) { 3140 if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) { 3141 specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command); 3142 3143 if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) { 3144 continue; 3145 } 3146 } 3147 children.push(node.childNodes[i]); 3148 } 3149 3150 // "Force the value of each Node in children, with command and new 3151 // value as in this invocation of the algorithm." 3152 for (i = 0; i < children.length; i++) { 3153 forceValue(children[i], command, newValue, range); 3154 } 3155 3156 // "Abort this algorithm." 3157 return; 3158 } 3159 3160 // "If the effective command value of command is loosely equivalent to new 3161 // value on node, abort this algorithm." 3162 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3163 return; 3164 } 3165 3166 // "Let new parent be null." 3167 var newParent = null; 3168 3169 // "If the CSS styling flag is false:" 3170 if (!cssStylingFlag) { 3171 // "If command is "bold" and new value is "bold", let new parent be the 3172 // result of calling createElement("b") on the ownerDocument of node." 3173 if (command == "bold" && (newValue == "bold" || newValue == "700")) { 3174 newParent = node.ownerDocument.createElement("b"); 3175 } 3176 3177 // "If command is "italic" and new value is "italic", let new parent be 3178 // the result of calling createElement("i") on the ownerDocument of 3179 // node." 3180 if (command == "italic" && newValue == "italic") { 3181 newParent = node.ownerDocument.createElement("i"); 3182 } 3183 3184 // "If command is "strikethrough" and new value is "line-through", let 3185 // new parent be the result of calling createElement("s") on the 3186 // ownerDocument of node." 3187 if (command == "strikethrough" && newValue == "line-through") { 3188 newParent = node.ownerDocument.createElement("s"); 3189 } 3190 3191 // "If command is "underline" and new value is "underline", let new 3192 // parent be the result of calling createElement("u") on the 3193 // ownerDocument of node." 3194 if (command == "underline" && newValue == "underline") { 3195 newParent = node.ownerDocument.createElement("u"); 3196 } 3197 3198 // "If command is "foreColor", and new value is fully opaque with red, 3199 // green, and blue components in the range 0 to 255:" 3200 if (command == "forecolor" && parseSimpleColor(newValue)) { 3201 // "Let new parent be the result of calling createElement("span") 3202 // on the ownerDocument of node." 3203 // NOTE: modified this process to create span elements with style attributes 3204 // instead of oldschool font tags with color attributes 3205 newParent = node.ownerDocument.createElement("span"); 3206 3207 // "If new value is an extended color keyword, set the color 3208 // attribute of new parent to new value." 3209 // 3210 // "Otherwise, set the color attribute of new parent to the result 3211 // of applying the rules for serializing simple color values to new 3212 // value (interpreted as a simple color)." 3213 jQuery(newParent).css('color', parseSimpleColor(newValue)); 3214 } 3215 3216 // "If command is "fontName", let new parent be the result of calling 3217 // createElement("font") on the ownerDocument of node, then set the 3218 // face attribute of new parent to new value." 3219 if (command == "fontname") { 3220 newParent = node.ownerDocument.createElement("font"); 3221 newParent.face = newValue; 3222 } 3223 } 3224 3225 // "If command is "createLink" or "unlink":" 3226 if (command == "createlink" || command == "unlink") { 3227 // "Let new parent be the result of calling createElement("a") on the 3228 // ownerDocument of node." 3229 newParent = node.ownerDocument.createElement("a"); 3230 3231 // "Set the href attribute of new parent to new value." 3232 newParent.setAttribute("href", newValue); 3233 3234 // "Let ancestor be node's parent." 3235 var ancestor = node.parentNode; 3236 3237 // "While ancestor is not null:" 3238 while (ancestor) { 3239 // "If ancestor is an a, set the tag name of ancestor to "span", 3240 // and let ancestor be the result." 3241 if (isNamedHtmlElement(ancestor, 'A')) { 3242 ancestor = setTagName(ancestor, "span", range); 3243 } 3244 3245 // "Set ancestor to its parent." 3246 ancestor = ancestor.parentNode; 3247 } 3248 } 3249 3250 // "If command is "fontSize"; and new value is one of "xx-small", "small", 3251 // "medium", "large", "x-large", "xx-large", or "xxx-large"; and either the 3252 // CSS styling flag is false, or new value is "xxx-large": let new parent 3253 // be the result of calling createElement("font") on the ownerDocument of 3254 // node, then set the size attribute of new parent to the number from the 3255 // following table based on new value: [table omitted]" 3256 if (command == "fontsize" && jQuery.inArray(newValue, ["xx-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) != -1 && (!cssStylingFlag || newValue == "xxx-large")) { 3257 newParent = node.ownerDocument.createElement("font"); 3258 newParent.size = cssSizeToLegacy(newValue); 3259 } 3260 3261 // "If command is "subscript" or "superscript" and new value is 3262 // "subscript", let new parent be the result of calling 3263 // createElement("sub") on the ownerDocument of node." 3264 if ((command == "subscript" || command == "superscript") && newValue == "subscript") { 3265 newParent = node.ownerDocument.createElement("sub"); 3266 } 3267 3268 // "If command is "subscript" or "superscript" and new value is 3269 // "superscript", let new parent be the result of calling 3270 // createElement("sup") on the ownerDocument of node." 3271 if ((command == "subscript" || command == "superscript") && newValue == "superscript") { 3272 newParent = node.ownerDocument.createElement("sup"); 3273 } 3274 3275 // "If new parent is null, let new parent be the result of calling 3276 // createElement("span") on the ownerDocument of node." 3277 if (!newParent) { 3278 newParent = node.ownerDocument.createElement("span"); 3279 } 3280 3281 // "Insert new parent in node's parent before node." 3282 node.parentNode.insertBefore(newParent, node); 3283 3284 // "If the effective command value of command for new parent is not loosely 3285 // equivalent to new value, and the relevant CSS property for command is 3286 // not null, set that CSS property of new parent to new value (if the new 3287 // value would be valid)." 3288 var property = commands[command].relevantCssProperty; 3289 if (property !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(newParent, command), newValue)) { 3290 newParent.style[property] = newValue; 3291 } 3292 3293 // "If command is "strikethrough", and new value is "line-through", and the 3294 // effective command value of "strikethrough" for new parent is not 3295 // "line-through", set the "text-decoration" property of new parent to 3296 // "line-through"." 3297 if (command == "strikethrough" && newValue == "line-through" && getEffectiveCommandValue(newParent, "strikethrough") != "line-through") { 3298 newParent.style.textDecoration = "line-through"; 3299 } 3300 3301 // "If command is "underline", and new value is "underline", and the 3302 // effective command value of "underline" for new parent is not 3303 // "underline", set the "text-decoration" property of new parent to 3304 // "underline"." 3305 if (command == "underline" && newValue == "underline" && getEffectiveCommandValue(newParent, "underline") != "underline") { 3306 newParent.style.textDecoration = "underline"; 3307 } 3308 3309 // "Append node to new parent as its last child, preserving ranges." 3310 movePreservingRanges(node, newParent, newParent.childNodes.length, range); 3311 3312 // "If node is an Element and the effective command value of command for 3313 // node is not loosely equivalent to new value:" 3314 if (node.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3315 // "Insert node into the parent of new parent before new parent, 3316 // preserving ranges." 3317 movePreservingRanges(node, newParent.parentNode, Dom.getIndexInParent(newParent), range); 3318 3319 // "Remove new parent from its parent." 3320 newParent.parentNode.removeChild(newParent); 3321 3322 // "Let children be all children of node, omitting any that are 3323 // Elements whose specified command value for command is neither null 3324 // nor equivalent to new value." 3325 children = []; 3326 for (i = 0; i < node.childNodes.length; i++) { 3327 if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) { 3328 specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command); 3329 3330 if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) { 3331 continue; 3332 } 3333 } 3334 children.push(node.childNodes[i]); 3335 } 3336 3337 // "Force the value of each Node in children, with command and new 3338 // value as in this invocation of the algorithm." 3339 for (i = 0; i < children.length; i++) { 3340 forceValue(children[i], command, newValue, range); 3341 } 3342 } 3343 } 3344 3345 //@} 3346 ///// Pushing down values ///// 3347 //@{ 3348 3349 function pushDownValues(node, command, newValue, range) { 3350 // "If node's parent is not an Element, abort this algorithm." 3351 if (!node.parentNode || node.parentNode.nodeType != $_.Node.ELEMENT_NODE) { 3352 return; 3353 } 3354 3355 // "If the effective command value of command is loosely equivalent to new 3356 // value on node, abort this algorithm." 3357 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3358 return; 3359 } 3360 3361 // "Let current ancestor be node's parent." 3362 var currentAncestor = node.parentNode; 3363 3364 // "Let ancestor list be a list of Nodes, initially empty." 3365 var ancestorList = []; 3366 3367 // "While current ancestor is an editable Element and the effective command 3368 // value of command is not loosely equivalent to new value on it, append 3369 // current ancestor to ancestor list, then set current ancestor to its 3370 // parent." 3371 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !areLooselyEquivalentValues(command, getEffectiveCommandValue(currentAncestor, command), newValue)) { 3372 ancestorList.push(currentAncestor); 3373 currentAncestor = currentAncestor.parentNode; 3374 } 3375 3376 // "If ancestor list is empty, abort this algorithm." 3377 if (!ancestorList.length) { 3378 return; 3379 } 3380 3381 // "Let propagated value be the specified command value of command on the 3382 // last member of ancestor list." 3383 var propagatedValue = getSpecifiedCommandValue(ancestorList[ancestorList.length - 1], command); 3384 3385 // "If propagated value is null and is not equal to new value, abort this 3386 // algorithm." 3387 if (propagatedValue === null && propagatedValue != newValue) { 3388 return; 3389 } 3390 3391 // "If the effective command value for the parent of the last member of 3392 // ancestor list is not loosely equivalent to new value, and new value is 3393 // not null, abort this algorithm." 3394 if (newValue !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(ancestorList[ancestorList.length - 1].parentNode, command), newValue)) { 3395 return; 3396 } 3397 3398 // "While ancestor list is not empty:" 3399 while (ancestorList.length) { 3400 // "Let current ancestor be the last member of ancestor list." 3401 // "Remove the last member from ancestor list." 3402 currentAncestor = ancestorList.pop(); 3403 3404 // "If the specified command value of current ancestor for command is 3405 // not null, set propagated value to that value." 3406 if (getSpecifiedCommandValue(currentAncestor, command) !== null) { 3407 propagatedValue = getSpecifiedCommandValue(currentAncestor, command); 3408 } 3409 3410 // "Let children be the children of current ancestor." 3411 var children = Array.prototype.slice.call(toArray(currentAncestor.childNodes)); 3412 3413 // "If the specified command value of current ancestor for command is 3414 // not null, clear the value of current ancestor." 3415 if (getSpecifiedCommandValue(currentAncestor, command) !== null) { 3416 clearValue(currentAncestor, command, range); 3417 } 3418 3419 // "For every child in children:" 3420 3421 var i; 3422 for (i = 0; i < children.length; i++) { 3423 var child = children[i]; 3424 3425 // "If child is node, continue with the next child." 3426 if (child == node) { 3427 continue; 3428 } 3429 3430 // "If child is an Element whose specified command value for 3431 // command is neither null nor equivalent to propagated value, 3432 // continue with the next child." 3433 if (child.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(child, command) !== null && !areEquivalentValues(command, propagatedValue, getSpecifiedCommandValue(child, command))) { 3434 continue; 3435 } 3436 3437 // "If child is the last member of ancestor list, continue with the 3438 // next child." 3439 if (child == ancestorList[ancestorList.length - 1]) { 3440 continue; 3441 } 3442 3443 // "Force the value of child, with command as in this algorithm 3444 // and new value equal to propagated value." 3445 forceValue(child, command, propagatedValue, range); 3446 } 3447 } 3448 } 3449 3450 function restoreValues(values, range) { 3451 // "For each (node, command, value) triple in values:" 3452 $_(values).forEach(function (triple) { 3453 var node = triple[0]; 3454 var command = triple[1]; 3455 var value = triple[2]; 3456 3457 // "Let ancestor equal node." 3458 var ancestor = node; 3459 3460 // "If ancestor is not an Element, set it to its parent." 3461 if (!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) { 3462 ancestor = ancestor.parentNode; 3463 } 3464 3465 // "While ancestor is an Element and its specified command value for 3466 // command is null, set it to its parent." 3467 while (ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(ancestor, command) === null) { 3468 ancestor = ancestor.parentNode; 3469 } 3470 3471 // "If value is null and ancestor is an Element, push down values on 3472 // node for command, with new value null." 3473 if (value === null && ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE) { 3474 pushDownValues(node, command, null, range); 3475 3476 // "Otherwise, if ancestor is an Element and its specified command 3477 // value for command is not equivalent to value, or if ancestor is not 3478 // an Element and value is not null, force the value of command to 3479 // value on node." 3480 } else if ((ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getSpecifiedCommandValue(ancestor, command), value)) || ((!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) && value !== null)) { 3481 forceValue(node, command, value, range); 3482 } 3483 }); 3484 } 3485 3486 //@} 3487 ///// Setting the selection's value ///// 3488 //@{ 3489 3490 function setSelectionValue(command, newValue, range) { 3491 3492 // Use current selected range if no range passed 3493 range = range || getActiveRange(); 3494 3495 // "If there is no editable text node effectively contained in the active 3496 // range:" 3497 if (!$_(getAllEffectivelyContainedNodes(range)).filter(function (node) { return node.nodeType == $_.Node.TEXT_NODE; }, true).some(isEditable)) { 3498 // "If command has inline command activated values, set the state 3499 // override to true if new value is among them and false if it's not." 3500 if (commands[command].hasOwnProperty("inlineCommandActivatedValues")) { 3501 setStateOverride( 3502 command, 3503 $_(commands[command].inlineCommandActivatedValues).indexOf(newValue) != -1, 3504 range 3505 ); 3506 } 3507 3508 // "If command is "subscript", unset the state override for 3509 // "superscript"." 3510 if (command == "subscript") { 3511 unsetStateOverride("superscript", range); 3512 } 3513 3514 // "If command is "superscript", unset the state override for 3515 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 3752 // "While (node, offset) is not a block boundary point:" 3753 while (!isBlockBoundaryPoint(node, offset)) { 3754 // "If node has a visible child with index offset, return false." 3755 if (offset < node.childNodes.length && isVisible(node.childNodes[offset])) { 3756 return false; 3757 } 3758 3759 // "If offset is node's length or node has no children, set offset to 3760 // one plus node's index, then set node to its parent." 3761 if (offset == getNodeLength(node) || !node.hasChildNodes()) { 3762 offset = 1 + Dom.getIndexInParent(node); 3763 node = node.parentNode; 3764 3765 // "Otherwise, set node to its child with index offset and set offset 3766 // to zero." 3767 } else { 3768 node = node.childNodes[offset]; 3769 offset = 0; 3770 } 3771 } 3772 3773 // "Return true." 3774 return true; 3775 } 3776 3777 //@} 3778 ///// Splitting a node list's parent ///// 3779 //@{ 3780 3781 function splitParent(nodeList, range) { 3782 var i; 3783 3784 // "Let original parent be the parent of the first member of node list." 3785 var originalParent = nodeList[0].parentNode; 3786 3787 // "If original parent is not editable or its parent is null, do nothing 3788 // and abort these steps." 3789 if (!isEditable(originalParent) || !originalParent.parentNode) { 3790 return; 3791 } 3792 3793 // "If the first child of original parent is in node list, remove 3794 // extraneous line breaks before original parent." 3795 if (jQuery.inArray(originalParent.firstChild, nodeList) != -1) { 3796 removeExtraneousLineBreaksBefore(originalParent); 3797 } 3798 3799 var firstChildInNodeList = jQuery.inArray(originalParent.firstChild, nodeList) != -1; 3800 var lastChildInNodeList = jQuery.inArray(originalParent.lastChild, nodeList) != -1; 3801 3802 // "If the first child of original parent is in node list, and original 3803 // parent follows a line break, set follows line break to true. Otherwise, 3804 // set follows line break to false." 3805 var followsLineBreak_ = firstChildInNodeList && followsLineBreak(originalParent); 3806 3807 // "If the last child of original parent is in node list, and original 3808 // parent precedes a line break, set precedes line break to true. 3809 // Otherwise, set precedes line break to false." 3810 var precedesLineBreak_ = lastChildInNodeList && precedesLineBreak(originalParent); 3811 3812 // "If the first child of original parent is not in node list, but its last 3813 // child is:" 3814 if (!firstChildInNodeList && lastChildInNodeList) { 3815 // "For each node in node list, in reverse order, insert node into the 3816 // parent of original parent immediately after original parent, 3817 // preserving ranges." 3818 for (i = nodeList.length - 1; i >= 0; i--) { 3819 movePreservingRanges(nodeList[i], originalParent.parentNode, 1 + Dom.getIndexInParent(originalParent), range); 3820 } 3821 3822 // "If precedes line break is true, and the last member of node list 3823 // does not precede a line break, call createElement("br") on the 3824 // context object and insert the result immediately after the last 3825 // member of node list." 3826 if (precedesLineBreak_ && !precedesLineBreak(nodeList[nodeList.length - 1])) { 3827 nodeList[nodeList.length - 1].parentNode.insertBefore(document.createElement("br"), nodeList[nodeList.length - 1].nextSibling); 3828 } 3829 3830 // "Remove extraneous line breaks at the end of original parent." 3831 removeExtraneousLineBreaksAtTheEndOf(originalParent); 3832 3833 // "Abort these steps." 3834 return; 3835 } 3836 3837 // "If the first child of original parent is not in node list:" 3838 if (!firstChildInNodeList) { 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 3928 if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) { 3929 value = "#" + value; 3930 } 3931 if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") { 3932 return; 3933 } 3934 3935 // "Set the selection's value to value." 3936 setSelectionValue("backcolor", value, range); 3937 }, 3938 standardInlineValueCommand: true, 3939 relevantCssProperty: "backgroundColor", 3940 equivalentValues: function (val1, val2) { 3941 // "Either both strings are valid CSS colors and have the same red, 3942 // green, blue, and alpha components, or neither string is a valid CSS 3943 // color." 3944 return normalizeColor(val1) === normalizeColor(val2); 3945 } 3946 }; 3947 3948 //@} 3949 ///// The bold command ///// 3950 //@{ 3951 commands.bold = { 3952 action: function (value, range) { 3953 // "If queryCommandState("bold") returns true, set the selection's 3954 // value to "normal". Otherwise set the selection's value to "bold"." 3955 if (myQueryCommandState("bold", range)) { 3956 setSelectionValue("bold", "normal", range); 3957 } else { 3958 setSelectionValue("bold", "bold", range); 3959 } 3960 }, 3961 inlineCommandActivatedValues: ["bold", "600", "700", "800", "900"], 3962 relevantCssProperty: "fontWeight", 3963 equivalentValues: function (val1, val2) { 3964 // "Either the two strings are equal, or one is "bold" and the other is 3965 // "700", or one is "normal" and the other is "400"." 3966 return val1 == val2 || (val1 == "bold" && val2 == "700") || (val1 == "700" && val2 == "bold") || (val1 == "normal" && val2 == "400") || (val1 == "400" && val2 == "normal"); 3967 } 3968 }; 3969 3970 //@} 3971 ///// The createLink command ///// 3972 //@{ 3973 commands.createlink = { 3974 action: function (value, range) { 3975 // "If value is the empty string, abort these steps and do nothing." 3976 if (value === "") { 3977 return; 3978 } 3979 3980 // "For each editable a element that has an href attribute and is an 3981 // ancestor of some node effectively contained in the active range, set 3982 // that a element's href attribute to value." 3983 // 3984 // TODO: We don't actually do this in tree order, not that it matters 3985 // unless you're spying with mutation events. 3986 $_(getAllEffectivelyContainedNodes(getActiveRange())).forEach(function (node) { 3987 $_(getAncestors(node)).forEach(function (ancestor) { 3988 if (isEditable(ancestor) && isNamedHtmlElement(ancestor, 'a') && hasAttribute(ancestor, "href")) { 3989 ancestor.setAttribute("href", value); 3990 } 3991 }); 3992 }); 3993 3994 // "Set the selection's value to value." 3995 setSelectionValue("createlink", value, range); 3996 }, 3997 standardInlineValueCommand: true 3998 }; 3999 4000 //@} 4001 ///// The fontName command ///// 4002 //@{ 4003 commands.fontname = { 4004 action: function (value, range) { 4005 // "Set the selection's value to value." 4006 setSelectionValue("fontname", value, range); 4007 }, 4008 standardInlineValueCommand: true, 4009 relevantCssProperty: "fontFamily" 4010 }; 4011 4012 //@} 4013 ///// The fontSize command ///// 4014 //@{ 4015 4016 commands.fontsize = { 4017 action: function (value, range) { 4018 // "If value is the empty string, abort these steps and do nothing." 4019 if (value === "") { 4020 return; 4021 } 4022 4023 value = normalizeFontSize(value); 4024 4025 // "If value is not one of the strings "xx-small", "x-small", "small", 4026 // "medium", "large", "x-large", "xx-large", "xxx-large", and is not a 4027 // valid CSS absolute length, then abort these steps and do nothing." 4028 // 4029 // More cheap hacks to skip valid CSS absolute length checks. 4030 if (jQuery.inArray(value, ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) == -1 && !/^[0-9]+(\.[0-9]+)?(cm|mm|in|pt|pc)$/.test(value)) { 4031 return; 4032 } 4033 4034 // "Set the selection's value to value." 4035 setSelectionValue("fontsize", value, range); 4036 }, 4037 indeterm: function () { 4038 // "True if among editable Text nodes that are effectively contained in 4039 // the active range, there are two that have distinct effective command 4040 // values. Otherwise false." 4041 return $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 4042 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4043 })).map(function (node) { 4044 return getEffectiveCommandValue(node, "fontsize"); 4045 }, true).filter(function (value, i, arr) { 4046 return $_(arr.slice(0, i)).indexOf(value) == -1; 4047 }).length >= 2; 4048 }, 4049 value: function (range) { 4050 // "Let pixel size be the effective command value of the first editable 4051 // Text node that is effectively contained in the active range, or if 4052 // there is no such node, the effective command value of the active 4053 // range's start node, in either case interpreted as a number of 4054 // pixels." 4055 var node = getAllEffectivelyContainedNodes(range, function (node) { 4056 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4057 })[0]; 4058 if (node === undefined) { 4059 node = range.startContainer; 4060 } 4061 var pixelSize = getEffectiveCommandValue(node, "fontsize"); 4062 4063 // "Return the legacy font size for pixel size." 4064 return getLegacyFontSize(pixelSize); 4065 }, 4066 relevantCssProperty: "fontSize" 4067 }; 4068 4069 //@} 4070 ///// The foreColor command ///// 4071 //@{ 4072 commands.forecolor = { 4073 action: function (value, range) { 4074 // Copy-pasted, same as backColor and hiliteColor 4075 4076 // "If value is not a valid CSS color, prepend "#" to it." 4077 // 4078 // "If value is still not a valid CSS color, or if it is currentColor, 4079 // abort these steps and do nothing." 4080 // 4081 // Cheap hack for testing, no attempt to be comprehensive. 4082 if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) { 4083 value = "#" + value; 4084 } 4085 if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") { 4086 return; 4087 } 4088 4089 // "Set the selection's value to value." 4090 setSelectionValue("forecolor", value, range); 4091 }, 4092 standardInlineValueCommand: true, 4093 relevantCssProperty: "color", 4094 equivalentValues: function (val1, val2) { 4095 // "Either both strings are valid CSS colors and have the same red, 4096 // green, blue, and alpha components, or neither string is a valid CSS 4097 // color." 4098 return normalizeColor(val1) === normalizeColor(val2); 4099 } 4100 }; 4101 4102 //@} 4103 ///// The hiliteColor command ///// 4104 //@{ 4105 commands.hilitecolor = { 4106 // Copy-pasted, same as backColor 4107 action: function (value, range) { 4108 // Action is further copy-pasted, same as foreColor 4109 4110 // "If value is not a valid CSS color, prepend "#" to it." 4111 // 4112 // "If value is still not a valid CSS color, or if it is currentColor, 4113 // abort these steps and do nothing." 4114 // 4115 // Cheap hack for testing, no attempt to be comprehensive. 4116 if (/^([0-9a-fA-F]{3}){1,2}$/.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 equivalentValues: function (val1, val2) { 4141 // "Either both strings are valid CSS colors and have the same red, 4142 // green, blue, and alpha components, or neither string is a valid CSS 4143 // color." 4144 return normalizeColor(val1) === normalizeColor(val2); 4145 } 4146 }; 4147 4148 //@} 4149 ///// The italic command ///// 4150 //@{ 4151 commands.italic = { 4152 action: function (value, range) { 4153 // "If queryCommandState("italic") returns true, set the selection's 4154 // value to "normal". Otherwise set the selection's value to "italic"." 4155 if (myQueryCommandState("italic", range)) { 4156 setSelectionValue("italic", "normal", range); 4157 } else { 4158 setSelectionValue("italic", "italic", range); 4159 } 4160 }, 4161 inlineCommandActivatedValues: ["italic", "oblique"], 4162 relevantCssProperty: "fontStyle" 4163 }; 4164 4165 //@} 4166 ///// The removeFormat command ///// 4167 //@{ 4168 commands.removeformat = { 4169 action: function (value, range) { 4170 var newEnd, newStart, newNode; 4171 4172 // "A removeFormat candidate is an editable HTML element with local 4173 // name "abbr", "acronym", "b", "bdi", "bdo", "big", "blink", "cite", 4174 // "code", "dfn", "em", "font", "i", "ins", "kbd", "mark", "nobr", "q", 4175 // "s", "samp", "small", "span", "strike", "strong", "sub", "sup", 4176 // "tt", "u", or "var"." 4177 function isRemoveFormatCandidate(node) { 4178 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"]); 4179 } 4180 4181 // "Let elements to remove be a list of every removeFormat candidate 4182 // effectively contained in the active range." 4183 var elementsToRemove = getAllEffectivelyContainedNodes(getActiveRange(), isRemoveFormatCandidate); 4184 4185 // "For each element in elements to remove:" 4186 $_(elementsToRemove).forEach(function (element) { 4187 // "While element has children, insert the first child of element 4188 // into the parent of element immediately before element, 4189 // preserving ranges." 4190 while (element.hasChildNodes()) { 4191 movePreservingRanges(element.firstChild, element.parentNode, Dom.getIndexInParent(element), getActiveRange()); 4192 } 4193 4194 // "Remove element from its parent." 4195 element.parentNode.removeChild(element); 4196 }); 4197 4198 // "If the active range's start node is an editable Text node, and its 4199 // start offset is neither zero nor its start node's length, call 4200 // splitText() on the active range's start node, with argument equal to 4201 // the active range's start offset. Then set the active range's start 4202 // node to the result, and its start offset to zero." 4203 if (isEditable(getActiveRange().startContainer) && getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset != 0 && getActiveRange().startOffset != getNodeLength(getActiveRange().startContainer)) { 4204 // Account for browsers not following range mutation rules 4205 if (getActiveRange().startContainer == getActiveRange().endContainer) { 4206 newEnd = getActiveRange().endOffset - getActiveRange().startOffset; 4207 newNode = splitText(getActiveRange().startContainer, getActiveRange().startOffset); 4208 getActiveRange().setStart(newNode, 0); 4209 getActiveRange().setEnd(newNode, newEnd); 4210 } else { 4211 getActiveRange().setStart(splitText(getActiveRange().startContainer, getActiveRange().startOffset), 0); 4212 } 4213 } 4214 4215 // "If the active range's end node is an editable Text node, and its 4216 // end offset is neither zero nor its end node's length, call 4217 // splitText() on the active range's end node, with argument equal to 4218 // the active range's end offset." 4219 if (isEditable(getActiveRange().endContainer) && getActiveRange().endContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().endOffset != 0 && getActiveRange().endOffset != getNodeLength(getActiveRange().endContainer)) { 4220 // IE seems to mutate the range incorrectly here, so we need 4221 // correction here as well. Have to be careful to set the range to 4222 // something not including the text node so that getActiveRange() 4223 // doesn't throw an exception due to a temporarily detached 4224 // endpoint. 4225 newStart = [getActiveRange().startContainer, getActiveRange().startOffset]; 4226 newEnd = [getActiveRange().endContainer, getActiveRange().endOffset]; 4227 getActiveRange().setEnd(document.documentElement, 0); 4228 splitText(newEnd[0], newEnd[1]); 4229 getActiveRange().setStart(newStart[0], newStart[1]); 4230 getActiveRange().setEnd(newEnd[0], newEnd[1]); 4231 } 4232 4233 // "Let node list consist of all editable nodes effectively contained 4234 // in the active range." 4235 // 4236 // "For each node in node list, while node's parent is a removeFormat 4237 // candidate in the same editing host as node, split the parent of the 4238 // one-node list consisting of node." 4239 $_(getAllEffectivelyContainedNodes(getActiveRange(), isEditable)).forEach(function (node) { 4240 while (isRemoveFormatCandidate(node.parentNode) && inSameEditingHost(node.parentNode, node)) { 4241 splitParent([node], getActiveRange()); 4242 } 4243 }); 4244 4245 // "For each of the entries in the following list, in the given order, 4246 // set the selection's value to null, with command as given." 4247 $_(["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"]).forEach(function (command) { 4248 setSelectionValue(command, null, range); 4249 }); 4250 } 4251 }; 4252 4253 //@} 4254 ///// The strikethrough command ///// 4255 //@{ 4256 commands.strikethrough = { 4257 action: function (value, range) { 4258 // "If queryCommandState("strikethrough") returns true, set the 4259 4260 // selection's value to null. Otherwise set the selection's value to 4261 // "line-through"." 4262 if (myQueryCommandState("strikethrough", range)) { 4263 setSelectionValue("strikethrough", null, range); 4264 } else { 4265 4266 setSelectionValue("strikethrough", "line-through", range); 4267 } 4268 }, 4269 inlineCommandActivatedValues: ["line-through"] 4270 }; 4271 4272 //@} 4273 ///// The subscript command ///// 4274 //@{ 4275 commands.subscript = { 4276 action: function (value, range) { 4277 // "Call queryCommandState("subscript"), and let state be the result." 4278 var state = myQueryCommandState("subscript", range); 4279 4280 // "Set the selection's value to null." 4281 setSelectionValue("subscript", null, range); 4282 4283 // "If state is false, set the selection's value to "subscript"." 4284 if (!state) { 4285 setSelectionValue("subscript", "subscript", range); 4286 } 4287 }, 4288 indeterm: function () { 4289 // "True if either among editable Text nodes that are effectively 4290 // contained in the active range, there is at least one with effective 4291 // command value "subscript" and at least one with some other effective 4292 // command value; or if there is some editable Text node effectively 4293 // contained in the active range with effective command value "mixed". 4294 // Otherwise false." 4295 var nodes = getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 4296 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4297 }); 4298 return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "subscript"; }) 4299 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") != "subscript"; })) 4300 || $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "mixed"; })); 4301 }, 4302 inlineCommandActivatedValues: ["subscript"] 4303 }; 4304 4305 //@} 4306 ///// The superscript command ///// 4307 //@{ 4308 commands.superscript = { 4309 action: function (value, range) { 4310 // "Call queryCommandState("superscript"), and let state be the 4311 // result." 4312 var state = myQueryCommandState("superscript", range); 4313 4314 // "Set the selection's value to null." 4315 setSelectionValue("superscript", null, range); 4316 4317 // "If state is false, set the selection's value to "superscript"." 4318 if (!state) { 4319 setSelectionValue("superscript", "superscript", range); 4320 } 4321 }, 4322 indeterm: function () { 4323 // "True if either among editable Text nodes that are effectively 4324 // contained in the active range, there is at least one with effective 4325 // command value "superscript" and at least one with some other 4326 // effective command value; or if there is some editable Text node 4327 // effectively contained in the active range with effective command 4328 // value "mixed". Otherwise false." 4329 var nodes = getAllEffectivelyContainedNodes( 4330 getActiveRange(), 4331 function (node) { 4332 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4333 } 4334 ); 4335 return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "superscript"; }) 4336 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") != "superscript"; })) 4337 || $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "mixed"; })); 4338 }, 4339 inlineCommandActivatedValues: ["superscript"] 4340 }; 4341 4342 //@} 4343 ///// The underline command ///// 4344 //@{ 4345 commands.underline = { 4346 action: function (value, range) { 4347 // "If queryCommandState("underline") returns true, set the selection's 4348 // value to null. Otherwise set the selection's value to "underline"." 4349 if (myQueryCommandState("underline", range)) { 4350 setSelectionValue("underline", null, range); 4351 } else { 4352 setSelectionValue("underline", "underline", range); 4353 } 4354 }, 4355 inlineCommandActivatedValues: ["underline"] 4356 }; 4357 4358 //@} 4359 ///// The unlink command ///// 4360 //@{ 4361 commands.unlink = { 4362 action: function () { 4363 // "Let hyperlinks be a list of every a element that has an href 4364 // attribute and is contained in the active range or is an ancestor of 4365 // one of its boundary points." 4366 // 4367 // As usual, take care to ensure it's tree order. The correctness of 4368 // the following is left as an exercise for the reader. 4369 var range = getActiveRange(); 4370 var hyperlinks = []; 4371 var node; 4372 for (node = range.startContainer; node; node = node.parentNode) { 4373 if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href")) { 4374 hyperlinks.unshift(node); 4375 } 4376 } 4377 for (node = range.startContainer; node != nextNodeDescendants(range.endContainer); node = nextNode(node)) { 4378 if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href") && (isContained(node, range) || isAncestor(node, range.endContainer) || node == range.endContainer)) { 4379 hyperlinks.push(node); 4380 } 4381 } 4382 4383 // "Clear the value of each member of hyperlinks." 4384 var i; 4385 for (i = 0; i < hyperlinks.length; i++) { 4386 clearValue(hyperlinks[i], "unlink", range); 4387 } 4388 }, 4389 standardInlineValueCommand: true 4390 }; 4391 4392 //@} 4393 4394 ///////////////////////////////////// 4395 ///// Block formatting commands ///// 4396 ///////////////////////////////////// 4397 4398 ///// Block formatting command definitions ///// 4399 //@{ 4400 4401 // "An indentation element is either a blockquote, or a div that has a style 4402 // attribute that sets "margin" or some subproperty of it." 4403 function isIndentationElement(node) { 4404 // Handling of indentation elements while deleting is somehow broken (pressing backspace 4405 // in blockquotes wraps the blockquote into a div, ...) 4406 // therefore for now, we pretend that indentation elements do not exist at all. 4407 return false; 4408 } 4409 4410 // "A simple indentation element is an indentation element that has no 4411 // attributes other than one or more of 4412 // 4413 // * "a style attribute that sets no properties other than "margin", "border", 4414 // "padding", or subproperties of those; 4415 // * "a class attribute; 4416 // * "a dir attribute." 4417 function isSimpleIndentationElement(node) { 4418 if (!isIndentationElement(node)) { 4419 return false; 4420 } 4421 4422 if (node.tagName != "BLOCKQUOTE" && node.tagName != "DIV") { 4423 return false; 4424 } 4425 4426 var i; 4427 for (i = 0; i < node.attributes.length; i++) { 4428 if (!isHtmlNamespace(node.attributes[i].namespaceURI) || jQuery.inArray(node.attributes[i].name, ["style", "class", "dir"]) == -1) { 4429 return false; 4430 } 4431 } 4432 4433 if (typeof node.style.length !== 'undefined') { 4434 for (i = 0; i < node.style.length; i++) { 4435 // This is approximate, but it works well enough for my purposes. 4436 if (!/^(-[a-z]+-)?(margin|border|padding)/.test(node.style[i])) { 4437 return false; 4438 } 4439 } 4440 } else { 4441 var s; 4442 /*jslint forin: true*/ //not sure whether node.style.hasOwnProperty is valid 4443 for (s in node.style) { 4444 // This is approximate, but it works well enough for my purposes. 4445 if (!/^(-[a-z]+-)?(margin|border|padding)/.test(s) && node.style[s] && node.style[s] !== 0 && node.style[s] !== 'false') { 4446 return false; 4447 } 4448 } 4449 /*jslint forin: false*/ 4450 } 4451 4452 return true; 4453 } 4454 4455 // "A non-list single-line container is an HTML element with local name 4456 // "address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre", 4457 // or "xmp"." 4458 function isNonListSingleLineContainer(node) { 4459 return isHtmlElementInArray(node, ["address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre", "xmp"]); 4460 } 4461 4462 // "A single-line container is either a non-list single-line container, or an 4463 // HTML element with local name "li", "dt", or "dd"." 4464 function isSingleLineContainer(node) { 4465 return isNonListSingleLineContainer(node) || isHtmlElementInArray(node, ["li", "dt", "dd"]); 4466 } 4467 4468 // "The default single-line container name is "p"." 4469 var defaultSingleLineContainerName = "p"; 4470 4471 //@} 4472 ///// Check whether the given element is an end break ///// 4473 //@{ 4474 function isEndBreak(element) { 4475 return (isNamedHtmlElement(element, 'br') && element.parentNode.lastChild === element); 4476 } 4477 4478 //@} 4479 ///// Create an end break ///// 4480 //@{ 4481 function createEndBreak() { 4482 return document.createElement("br"); 4483 } 4484 4485 /** 4486 * Ensure the container is editable 4487 * E.g. when called for an empty paragraph or header, and the browser is not IE, 4488 * we need to append a br (marked with class aloha-end-br) 4489 * For IE7, there is a special behaviour that will append zero-width whitespace 4490 * @param {DOMNode} container 4491 */ 4492 function ensureContainerEditable(container) { 4493 if (!container) { 4494 return; 4495 } 4496 4497 // Because it is useful to be able to completely empty the contents of 4498 // an editing host during editing. So long as the container's 4499 // contenteditable attribute is "true" (as is the case during editing), 4500 // the element will be rendered visibly in all browsers. This fact 4501 // allows us to not have to prop up the container with a <br> in order 4502 // to keep it accessible to the editor. 4503 if (isEditingHost(container)) { 4504 return; 4505 } 4506 4507 if (isNamedHtmlElement(container.lastChild, "br")) { 4508 return; 4509 } 4510 4511 if ($_(container.childNodes).some(isVisible)) { 4512 return; 4513 } 4514 4515 if (!jQuery.browser.msie) { 4516 // for normal browsers, the end-br will do 4517 container.appendChild(createEndBreak()); 4518 } else if (jQuery.browser.msie && jQuery.browser.version <= 7 && isHtmlElementInArray(container, ["p", "h1", "h2", "h3", "h4", "h5", "h6", "pre", "blockquote"])) { 4519 // for IE7, we need to insert a text node containing a single zero-width whitespace character 4520 if (!container.firstChild) { 4521 container.appendChild(document.createTextNode('\u200b')); 4522 } 4523 } 4524 } 4525 4526 //@} 4527 ///// Assorted block formatting command algorithms ///// 4528 //@{ 4529 4530 function fixDisallowedAncestors(node, range) { 4531 var i; 4532 4533 // "If node is not editable, abort these steps." 4534 if (!isEditable(node)) { 4535 return; 4536 } 4537 4538 // "If node is not an allowed child of any of its ancestors in the same 4539 // editing host, and is not an HTML element with local name equal to the 4540 // default single-line container name:" 4541 if ($_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); }) 4542 && !isHtmlElement_obsolete(node, defaultSingleLineContainerName)) { 4543 // "If node is a dd or dt, wrap the one-node list consisting of node, 4544 // with sibling criteria returning true for any dl with no attributes 4545 // and false otherwise, and new parent instructions returning the 4546 // result of calling createElement("dl") on the context object. Then 4547 // abort these steps." 4548 if (isHtmlElementInArray(node, ["dd", "dt"])) { 4549 wrap( 4550 [node], 4551 function (sibling) { 4552 return isNamedHtmlElement(sibling, 'dl') && !sibling.attributes.length; 4553 }, 4554 function () { 4555 return document.createElement("dl"); 4556 }, 4557 range 4558 ); 4559 return; 4560 } 4561 4562 // "If node is not a prohibited paragraph child, abort these steps." 4563 if (!isProhibitedParagraphChild(node)) { 4564 return; 4565 } 4566 4567 // "Set the tag name of node to the default single-line container name, 4568 // and let node be the result." 4569 node = setTagName(node, defaultSingleLineContainerName, range); 4570 4571 ensureContainerEditable(node); 4572 4573 // "Fix disallowed ancestors of node." 4574 fixDisallowedAncestors(node, range); 4575 4576 // "Let descendants be all descendants of node." 4577 var descendants = getDescendants(node); 4578 4579 // "Fix disallowed ancestors of each member of descendants." 4580 for (i = 0; i < descendants.length; i++) { 4581 fixDisallowedAncestors(descendants[i], range); 4582 } 4583 4584 // "Abort these steps." 4585 return; 4586 } 4587 4588 // "Record the values of the one-node list consisting of node, and let 4589 // values be the result." 4590 var values = recordValues([node]); 4591 var newStartOffset, newEndOffset; 4592 4593 // "While node is not an allowed child of its parent, split the parent of 4594 // the one-node list consisting of node." 4595 while (!isAllowedChild(node, node.parentNode)) { 4596 // If the parent contains only this node and possibly empty text nodes, we rather want to unwrap the node, instead of splitting. 4597 // With splitting, we would get empty nodes, like: 4598 // split: <p><p>foo</p></p> -> <p></p><p>foo</p> (bad) 4599 // unwrap: <p><p>foo</p></p> -> <p>foo</p> (good) 4600 4601 // First remove empty text nodes that are children of the parent and correct the range if necessary 4602 // we do this to have the node being the only child of its parent, so that we can replace the parent with the node 4603 for (i = node.parentNode.childNodes.length - 1; i >= 0; --i) { 4604 if (node.parentNode.childNodes[i].nodeType == 3 && node.parentNode.childNodes[i].data.length == 0) { 4605 // we remove the empty text node 4606 node.parentNode.removeChild(node.parentNode.childNodes[i]); 4607 4608 // if the range points to somewhere behind the removed text node, we reduce the offset 4609 if (range.startContainer == node.parentNode && range.startOffset > i) { 4610 range.startOffset--; 4611 } 4612 if (range.endContainer == node.parentNode && range.endOffset > i) { 4613 range.endOffset--; 4614 } 4615 } 4616 } 4617 4618 // now that the parent has only the node as child (because we 4619 // removed any existing empty text nodes), we can safely unwrap the 4620 // node's contents, and correct the range if necessary 4621 if (node.parentNode.childNodes.length == 1) { 4622 newStartOffset = range.startOffset; 4623 newEndOffset = range.endOffset; 4624 4625 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4626 // the node (1 element) will be replaced by its contents (contents().length elements) 4627 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4628 } 4629 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4630 // the node (1 element) will be replaced by its contents (contents().length elements) 4631 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4632 } 4633 jQuery(node).contents().unwrap(); 4634 range.startOffset = newStartOffset; 4635 range.endOffset = newEndOffset; 4636 4637 // after unwrapping, we are done 4638 break; 4639 } else { 4640 // store the original parent 4641 var originalParent = node.parentNode; 4642 splitParent([node], range); 4643 // check whether the parent did not change, so the split did not work, e.g. 4644 // because we already reached the editing host itself. 4645 // this situation can occur, e.g. when we insert a paragraph into an contenteditable span 4646 // in such cases, we just unwrap the contents of the paragraph 4647 if (originalParent === node.parentNode) { 4648 // so we unwrap now 4649 newStartOffset = range.startOffset; 4650 newEndOffset = range.endOffset; 4651 4652 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4653 // the node (1 element) will be replaced by its contents (contents().length elements) 4654 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4655 } 4656 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4657 // the node (1 element) will be replaced by its contents (contents().length elements) 4658 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4659 } 4660 jQuery(node).contents().unwrap(); 4661 range.startOffset = newStartOffset; 4662 range.endOffset = newEndOffset; 4663 // after unwrapping, we are done 4664 break; 4665 } 4666 } 4667 } 4668 4669 // "Restore the values from values." 4670 restoreValues(values, range); 4671 } 4672 4673 /** 4674 * This method "normalizes" sublists of the given item (which is supposed to be a LI): 4675 * If sublists are found in the LI element, they are moved directly into the outer list. 4676 * @param item item 4677 * @param range range, which will be modified if necessary 4678 */ 4679 function normalizeSublists(item, range) { 4680 // "If item is not an li or it is not editable or its parent is not 4681 // editable, abort these steps." 4682 if (!isNamedHtmlElement(item, 'LI') || !isEditable(item) || !isEditable(item.parentNode)) { 4683 return; 4684 } 4685 4686 // "Let new item be null." 4687 var newItem = null; 4688 4689 function isOlUl(node) { 4690 return isHtmlElementInArray(node, ["OL", "UL"]); 4691 } 4692 4693 // "While item has an ol or ul child:" 4694 while ($_(item.childNodes).some(isOlUl)) { 4695 // "Let child be the last child of item." 4696 4697 var child = item.lastChild; 4698 4699 // "If child is an ol or ul, or new item is null and child is a Text 4700 // node whose data consists of zero of more space characters:" 4701 if (isHtmlElementInArray(child, ["OL", "UL"]) || (!newItem && child.nodeType == $_.Node.TEXT_NODE && /^[ \t\n\f\r]*$/.test(child.data))) { 4702 // "Set new item to null." 4703 newItem = null; 4704 4705 // "Insert child into the parent of item immediately following 4706 // item, preserving ranges." 4707 movePreservingRanges(child, item.parentNode, 1 + Dom.getIndexInParent(item), range); 4708 4709 // "Otherwise:" 4710 } else { 4711 // "If new item is null, let new item be the result of calling 4712 // createElement("li") on the ownerDocument of item, then insert 4713 // new item into the parent of item immediately after item." 4714 if (!newItem) { 4715 newItem = item.ownerDocument.createElement("li"); 4716 item.parentNode.insertBefore(newItem, item.nextSibling); 4717 } 4718 4719 // "Insert child into new item as its first child, preserving 4720 // ranges." 4721 movePreservingRanges(child, newItem, 0, range); 4722 } 4723 } 4724 } 4725 4726 /** 4727 * This method is the exact opposite of normalizeSublists. 4728 * List nodes directly nested into each other are corrected to be nested in li elements (so that the resulting lists conform the html5 specification) 4729 * @param item list node 4730 * @param range range, which is preserved when modifying the list 4731 */ 4732 function unNormalizeSublists(item, range) { 4733 // "If item is not an ol or ol or it is not editable or its parent is not 4734 // editable, abort these steps." 4735 if (!isHtmlElementInArray(item, ["OL", "UL"]) || !isEditable(item)) { 4736 return; 4737 } 4738 4739 var $list = jQuery(item); 4740 $list.children("ol,ul").each(function (index, sublist) { 4741 if (isNamedHtmlElement(sublist.previousSibling, "LI")) { 4742 // move the sublist into the LI 4743 movePreservingRanges(sublist, sublist.previousSibling, sublist.previousSibling.childNodes.length, range); 4744 } 4745 }); 4746 } 4747 4748 //@} 4749 ///// Block-extending a range ///// 4750 //@{ 4751 4752 function blockExtend(range) { 4753 // "Let start node, start offset, end node, and end offset be the start 4754 // and end nodes and offsets of the range." 4755 var startNode = range.startContainer; 4756 var startOffset = range.startOffset; 4757 var endNode = range.endContainer; 4758 var endOffset = range.endOffset; 4759 4760 // "If some ancestor container of start node is an li, set start offset to 4761 // the index of the last such li in tree order, and set start node to that 4762 // li's parent." 4763 var liAncestors = $_(getAncestors(startNode).concat(startNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4764 if (liAncestors.length) { 4765 startOffset = Dom.getIndexInParent(liAncestors[0]); 4766 startNode = liAncestors[0].parentNode; 4767 } 4768 4769 // "If (start node, start offset) is not a block start point, repeat the 4770 // following steps:" 4771 if (!isBlockStartPoint(startNode, startOffset)) { 4772 do { 4773 // "If start offset is zero, set it to start node's index, then set 4774 // start node to its parent." 4775 if (startOffset == 0) { 4776 startOffset = Dom.getIndexInParent(startNode); 4777 startNode = startNode.parentNode; 4778 4779 // "Otherwise, subtract one from start offset." 4780 } else { 4781 startOffset--; 4782 } 4783 4784 // "If (start node, start offset) is a block boundary point, break from 4785 // this loop." 4786 } while (!isBlockBoundaryPoint(startNode, startOffset)); 4787 } 4788 4789 // "While start offset is zero and start node's parent is not null, set 4790 // start offset to start node's index, then set start node to its parent." 4791 while (startOffset == 0 && startNode.parentNode) { 4792 startOffset = Dom.getIndexInParent(startNode); 4793 startNode = startNode.parentNode; 4794 } 4795 4796 // "If some ancestor container of end node is an li, set end offset to one 4797 // plus the index of the last such li in tree order, and set end node to 4798 // that li's parent." 4799 liAncestors = $_(getAncestors(endNode).concat(endNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4800 if (liAncestors.length) { 4801 endOffset = 1 + Dom.getIndexInParent(liAncestors[0]); 4802 endNode = liAncestors[0].parentNode; 4803 } 4804 4805 // "If (end node, end offset) is not a block end point, repeat the 4806 // following steps:" 4807 if (!isBlockEndPoint(endNode, endOffset)) { 4808 do { 4809 // "If end offset is end node's length, set it to one plus end node's 4810 // index, then set end node to its parent." 4811 if (endOffset == getNodeLength(endNode)) { 4812 endOffset = 1 + Dom.getIndexInParent(endNode); 4813 endNode = endNode.parentNode; 4814 4815 // "Otherwise, add one to end offset. 4816 } else { 4817 endOffset++; 4818 } 4819 4820 // "If (end node, end offset) is a block boundary point, break from 4821 // this loop." 4822 } while (!isBlockBoundaryPoint(endNode, endOffset)); 4823 } 4824 4825 // "While end offset is end node's length and end node's parent is not 4826 // null, set end offset to one plus end node's index, then set end node to 4827 // its parent." 4828 while (endOffset == getNodeLength(endNode) && endNode.parentNode) { 4829 endOffset = 1 + Dom.getIndexInParent(endNode); 4830 endNode = endNode.parentNode; 4831 } 4832 4833 // "Let new range be a new range whose start and end nodes and offsets 4834 // are start node, start offset, end node, and end offset." 4835 var newRange = Aloha.createRange(); 4836 newRange.setStart(startNode, startOffset); 4837 newRange.setEnd(endNode, endOffset); 4838 4839 // "Return new range." 4840 return newRange; 4841 } 4842 4843 function getSelectionListState() { 4844 // "Block-extend the active range, and let new range be the result." 4845 var newRange = blockExtend(getActiveRange()); 4846 4847 // "Let node list be a list of nodes, initially empty." 4848 // 4849 // "For each node contained in new range, append node to node list if the 4850 // last member of node list (if any) is not an ancestor of node; node is 4851 // editable; node is not an indentation element; and node is either an ol 4852 // or ul, or the child of an ol or ul, or an allowed child of "li"." 4853 var nodeList = getContainedNodes(newRange, function (node) { 4854 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]) || isAllowedChild(node, "li")); 4855 }); 4856 4857 // "If node list is empty, return "none"." 4858 if (!nodeList.length) { 4859 return "none"; 4860 } 4861 4862 // "If every member of node list is either an ol or the child of an ol or 4863 // the child of an li child of an ol, and none is a ul or an ancestor of a 4864 // ul, return "ol"." 4865 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ol') 4866 || isNamedHtmlElement(node.parentNode, "ol") 4867 || (isNamedHtmlElement(node.parentNode, "li") 4868 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); }) 4869 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ul') || (node.querySelector && node.querySelector("ul")); })) { 4870 return "ol"; 4871 } 4872 4873 // "If every member of node list is either a ul or the child of a ul or the 4874 // child of an li child of a ul, and none is an ol or an ancestor of an ol, 4875 // return "ul"." 4876 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ul') 4877 || isNamedHtmlElement(node.parentNode, "ul") 4878 || (isNamedHtmlElement(node.parentNode, "li") 4879 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); }) 4880 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ol') || (node.querySelector && node.querySelector("ol")); })) { 4881 return "ul"; 4882 } 4883 4884 var hasOl = $_(nodeList).some(function (node) { 4885 return (isNamedHtmlElement(node, 'ol') 4886 || isNamedHtmlElement(node.parentNode, "ol") 4887 || (node.querySelector && node.querySelector("ol")) 4888 || (isNamedHtmlElement(node.parentNode, "li") 4889 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); 4890 }); 4891 var hasUl = $_(nodeList).some(function (node) { 4892 return (isNamedHtmlElement(node, 'ul') 4893 || isNamedHtmlElement(node.parentNode, "ul") 4894 || (node.querySelector && node.querySelector("ul")) 4895 || (isNamedHtmlElement(node.parentNode, "li") 4896 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); 4897 }); 4898 // "If some member of node list is either an ol or the child or ancestor of 4899 // an ol or the child of an li child of an ol, and some member of node list 4900 // is either a ul or the child or ancestor of a ul or the child of an li 4901 // child of a ul, return "mixed"." 4902 if (hasOl && hasUl) { 4903 return "mixed"; 4904 } 4905 4906 // "If some member of node list is either an ol or the child or ancestor of 4907 // an ol or the child of an li child of an ol, return "mixed ol"." 4908 if (hasOl) { 4909 return "mixed ol"; 4910 } 4911 4912 // "If some member of node list is either a ul or the child or ancestor of 4913 // a ul or the child of an li child of a ul, return "mixed ul"." 4914 if (hasUl) { 4915 return "mixed ul"; 4916 } 4917 4918 // "Return "none"." 4919 return "none"; 4920 } 4921 4922 function getAlignmentValue(node) { 4923 // "While node is neither null nor an Element, or it is an Element but its 4924 // "display" property has resolved value "inline" or "none", set node to 4925 // its parent." 4926 while ((node && node.nodeType != $_.Node.ELEMENT_NODE) || (node.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(node).display, ["inline", "none"]) != -1)) { 4927 node = node.parentNode; 4928 } 4929 4930 // "If node is not an Element, return "left"." 4931 if (!node || node.nodeType != $_.Node.ELEMENT_NODE) { 4932 return "left"; 4933 } 4934 4935 var resolvedValue = $_.getComputedStyle(node).textAlign 4936 // Hack around browser non-standardness 4937 .replace(/^-(moz|webkit)-/, "").replace(/^auto$/, "start"); 4938 4939 // "If node's "text-align" property has resolved value "start", return 4940 // "left" if the directionality of node is "ltr", "right" if it is "rtl"." 4941 if (resolvedValue == "start") { 4942 return getDirectionality(node) == "ltr" ? "left" : "right"; 4943 } 4944 4945 // "If node's "text-align" property has resolved value "end", return 4946 // "right" if the directionality of node is "ltr", "left" if it is "rtl"." 4947 if (resolvedValue == "end") { 4948 return getDirectionality(node) == "ltr" ? "right" : "left"; 4949 } 4950 4951 // "If node's "text-align" property has resolved value "center", "justify", 4952 // "left", or "right", return that value." 4953 if (jQuery.inArray(resolvedValue, ["center", "justify", "left", "right"]) != -1) { 4954 return resolvedValue; 4955 } 4956 4957 // "Return "left"." 4958 return "left"; 4959 } 4960 4961 //@} 4962 ///// Recording and restoring overrides ///// 4963 //@{ 4964 4965 function recordCurrentOverrides(range) { 4966 // "Let overrides be a list of (string, string or boolean) ordered pairs, 4967 // initially empty." 4968 var overrides = []; 4969 4970 // "If there is a value override for "createLink", add ("createLink", value 4971 // override for "createLink") to overrides." 4972 if (getValueOverride("createlink", range) !== undefined) { 4973 overrides.push(["createlink", getValueOverride("createlink", range)]); 4974 } 4975 4976 // "For each command in the list "bold", "italic", "strikethrough", 4977 // "subscript", "superscript", "underline", in order: if there is a state 4978 // override for command, add (command, command's state override) to 4979 // overrides." 4980 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 4981 if (getStateOverride(command, range) !== undefined) { 4982 overrides.push([command, getStateOverride(command, range)]); 4983 } 4984 }); 4985 4986 // "For each command in the list "fontName", "fontSize", "foreColor", 4987 // "hiliteColor", in order: if there is a value override for command, add 4988 // (command, command's value override) to overrides." 4989 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 4990 if (getValueOverride(command, range) !== undefined) { 4991 overrides.push([command, getValueOverride(command, range)]); 4992 } 4993 }); 4994 4995 // "Return overrides." 4996 return overrides; 4997 } 4998 4999 function recordCurrentStatesAndValues(range) { 5000 // "Let overrides be a list of (string, string or boolean) ordered pairs, 5001 // initially empty." 5002 var overrides = []; 5003 5004 // "Let node be the first editable Text node effectively contained in the 5005 // active range, or null if there is none." 5006 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5007 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5008 })[0]; 5009 5010 // "If node is null, return overrides." 5011 if (!node) { 5012 return overrides; 5013 } 5014 5015 // "Add ("createLink", value for "createLink") to overrides." 5016 overrides.push(["createlink", commands.createlink.value(range)]); 5017 5018 // "For each command in the list "bold", "italic", "strikethrough", 5019 // "subscript", "superscript", "underline", in order: if node's effective 5020 // command value for command is one of its inline command activated values, 5021 // add (command, true) to overrides, and otherwise add (command, false) to 5022 // overrides." 5023 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 5024 if ($_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1) { 5025 overrides.push([command, true]); 5026 } else { 5027 overrides.push([command, false]); 5028 } 5029 }); 5030 5031 // "For each command in the list "fontName", "foreColor", "hiliteColor", in 5032 // order: add (command, command's value) to overrides." 5033 5034 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 5035 overrides.push([command, commands[command].value(range)]); 5036 }); 5037 5038 // "Add ("fontSize", node's effective command value for "fontSize") to 5039 // overrides." 5040 overrides.push(["fontsize", getEffectiveCommandValue(node, "fontsize")]); 5041 5042 // "Return overrides." 5043 return overrides; 5044 } 5045 5046 function restoreStatesAndValues(overrides, range) { 5047 var i; 5048 var command; 5049 var override; 5050 // "Let node be the first editable Text node effectively contained in the 5051 // active range, or null if there is none." 5052 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5053 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5054 })[0]; 5055 5056 function isEditableTextNode(node) { 5057 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5058 } 5059 5060 // "If node is not null, then for each (command, override) pair in 5061 // overrides, in order:" 5062 if (node) { 5063 5064 for (i = 0; i < overrides.length; i++) { 5065 command = overrides[i][0]; 5066 override = overrides[i][1]; 5067 5068 // "If override is a boolean, and queryCommandState(command) 5069 // returns something different from override, call 5070 // execCommand(command)." 5071 if (typeof override == "boolean" && myQueryCommandState(command, range) != override) { 5072 myExecCommand(command, false, override, range); 5073 5074 // "Otherwise, if override is a string, and command is not 5075 // "fontSize", and queryCommandValue(command) returns something not 5076 // equivalent to override, call execCommand(command, false, 5077 // override)." 5078 } else if (typeof override == "string" && command != "fontsize" && !areEquivalentValues(command, myQueryCommandValue(command, range), override)) { 5079 myExecCommand(command, false, override, range); 5080 5081 // "Otherwise, if override is a string; and command is "fontSize"; 5082 // and either there is a value override for "fontSize" that is not 5083 // equal to override, or there is no value override for "fontSize" 5084 // and node's effective command value for "fontSize" is not loosely 5085 // equivalent to override: call execCommand("fontSize", false, 5086 // override)." 5087 } else if (typeof override == "string" 5088 && command == "fontsize" 5089 && ((getValueOverride("fontsize", range) !== undefined 5090 && getValueOverride("fontsize", range) !== override) 5091 || (getValueOverride("fontsize", range) === undefined 5092 && !areLooselyEquivalentValues(command, getEffectiveCommandValue(node, "fontsize"), override)))) { 5093 myExecCommand("fontsize", false, override, range); 5094 5095 // "Otherwise, continue this loop from the beginning." 5096 } else { 5097 continue; 5098 } 5099 5100 // "Set node to the first editable Text node effectively contained 5101 // in the active range, if there is one." 5102 node = $_(getAllEffectivelyContainedNodes(range)).filter(isEditableTextNode)[0] || node; 5103 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 5204 // start offset to start node's index, then set start node to its 5205 // parent." 5206 } else if (startOffset == 0 && !followsLineBreak(startNode) && inSameEditingHost(startNode, startNode.parentNode)) { 5207 startOffset = Dom.getIndexInParent(startNode); 5208 startNode = startNode.parentNode; 5209 5210 // "Otherwise, if start node is a Text node and its parent's resolved 5211 // value for "white-space" is neither "pre" nor "pre-wrap" and start 5212 // offset is not zero and the (start offset − 1)st element of start 5213 // node's data is a space (0x0020) or non-breaking space (0x00A0), 5214 // subtract one from start offset." 5215 } 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])) { 5216 startOffset--; 5217 5218 // "Otherwise, break from this loop." 5219 } else { 5220 break; 5221 } 5222 } 5223 5224 // "Let end node equal start node and end offset equal start offset." 5225 var endNode = startNode; 5226 var endOffset = startOffset; 5227 5228 // "Let length equal zero." 5229 var length = 0; 5230 5231 // "Let follows space be false." 5232 var followsSpace = false; 5233 5234 // "Repeat the following steps:" 5235 while (true) { 5236 // "If end node has a child in the same editing host with index end 5237 // offset, set end node to that child, then set end offset to zero." 5238 if (endOffset < endNode.childNodes.length && inSameEditingHost(endNode, endNode.childNodes[endOffset])) { 5239 endNode = endNode.childNodes[endOffset]; 5240 endOffset = 0; 5241 5242 // "Otherwise, if end offset is end node's length and end node does not 5243 // precede a line break and end node's parent is in the same editing 5244 // host, set end offset to one plus end node's index, then set end node 5245 // to its parent." 5246 } else if (endOffset == getNodeLength(endNode) && !precedesLineBreak(endNode) && inSameEditingHost(endNode, endNode.parentNode)) { 5247 endOffset = 1 + Dom.getIndexInParent(endNode); 5248 endNode = endNode.parentNode; 5249 5250 // "Otherwise, if end node is a Text node and its parent's resolved 5251 // value for "white-space" is neither "pre" nor "pre-wrap" and end 5252 // offset is not end node's length and the end offsetth element of 5253 // end node's data is a space (0x0020) or non-breaking space (0x00A0):" 5254 } 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])) { 5255 // "If follows space is true and the end offsetth element of end 5256 // node's data is a space (0x0020), call deleteData(end offset, 1) 5257 // on end node, then continue this loop from the beginning." 5258 if (followsSpace && " " == endNode.data[endOffset]) { 5259 endNode.deleteData(endOffset, 1); 5260 continue; 5261 } 5262 5263 // "Set follows space to true if the end offsetth element of end 5264 // node's data is a space (0x0020), false otherwise." 5265 followsSpace = " " == endNode.data[endOffset]; 5266 5267 // "Add one to end offset." 5268 endOffset++; 5269 5270 // "Add one to length." 5271 length++; 5272 5273 // "Otherwise, break from this loop." 5274 } else { 5275 break; 5276 } 5277 } 5278 5279 // "Let replacement whitespace be the canonical space sequence of length 5280 // length. non-breaking start is true if start offset is zero and start 5281 // node follows a line break, and false otherwise. non-breaking end is true 5282 // if end offset is end node's length and end node precedes a line break, 5283 // and false otherwise." 5284 var replacementWhitespace = canonicalSpaceSequence(length, startOffset == 0 && followsLineBreak(startNode), endOffset == getNodeLength(endNode) && precedesLineBreak(endNode)); 5285 5286 // "While (start node, start offset) is before (end node, end offset):" 5287 while (getPosition(startNode, startOffset, endNode, endOffset) == "before") { 5288 // "If start node has a child with index start offset, set start node 5289 // to that child, then set start offset to zero." 5290 if (startOffset < startNode.childNodes.length) { 5291 startNode = startNode.childNodes[startOffset]; 5292 startOffset = 0; 5293 5294 // "Otherwise, if start node is not a Text node or if start offset is 5295 // start node's length, set start offset to one plus start node's 5296 // index, then set start node to its parent." 5297 } else if (startNode.nodeType != $_.Node.TEXT_NODE || startOffset == getNodeLength(startNode)) { 5298 startOffset = 1 + Dom.getIndexInParent(startNode); 5299 startNode = startNode.parentNode; 5300 5301 // "Otherwise:" 5302 } else { 5303 // "Remove the first element from replacement whitespace, and let 5304 // element be that element." 5305 var element = replacementWhitespace[0]; 5306 replacementWhitespace = replacementWhitespace.slice(1); 5307 5308 // "If element is not the same as the start offsetth element of 5309 // start node's data:" 5310 if (element != startNode.data[startOffset]) { 5311 // "Call insertData(start offset, element) on start node." 5312 startNode.insertData(startOffset, element); 5313 5314 // "Call deleteData(start offset + 1, 1) on start node." 5315 startNode.deleteData(startOffset + 1, 1); 5316 } 5317 5318 // "Add one to start offset." 5319 startOffset++; 5320 } 5321 } 5322 } 5323 5324 //@} 5325 ///// Deleting the contents of a range ///// 5326 //@{ 5327 5328 function deleteContents(arg1, arg2, arg3, arg4, arg5) { 5329 // We accept several different calling conventions: 5330 // 5331 // 1) A single argument, which is a range. 5332 // 5333 // 2) Two arguments, the first being a range and the second flags. 5334 // 5335 // 3) Four arguments, the start and end of a range. 5336 // 5337 // 4) Five arguments, the start and end of a range plus flags. 5338 5339 // 5340 // The flags argument is a dictionary that can have up to two keys, 5341 // blockMerging and stripWrappers, whose corresponding values are 5342 // interpreted as boolean. E.g., {stripWrappers: false}. 5343 var range; 5344 var flags = {}; 5345 var i; 5346 5347 if (arguments.length < 3) { 5348 range = arg1; 5349 } else { 5350 range = Aloha.createRange(); 5351 range.setStart(arg1, arg2); 5352 range.setEnd(arg3, arg4); 5353 } 5354 if (arguments.length == 2) { 5355 flags = arg2; 5356 } 5357 if (arguments.length == 5) { 5358 flags = arg5; 5359 } 5360 5361 var blockMerging = null != flags.blockMerging ? !!flags.blockMerging : true; 5362 var stripWrappers = null != flags.stripWrappers ? !!flags.stripWrappers : true; 5363 5364 // "If range is null, abort these steps and do nothing." 5365 if (!range) { 5366 return; 5367 } 5368 5369 // "Let start node, start offset, end node, and end offset be range's start 5370 // and end nodes and offsets." 5371 var startNode = range.startContainer; 5372 var startOffset = range.startOffset; 5373 var endNode = range.endContainer; 5374 var endOffset = range.endOffset; 5375 var referenceNode; 5376 5377 // "While start node has at least one child:" 5378 while (startNode.hasChildNodes()) { 5379 // "If start offset is start node's length, and start node's parent is 5380 // in the same editing host, and start node is an inline node, set 5381 // start offset to one plus the index of start node, then set start 5382 // node to its parent and continue this loop from the beginning." 5383 if (startOffset == getNodeLength(startNode) && inSameEditingHost(startNode, startNode.parentNode) && isInlineNode(startNode)) { 5384 startOffset = 1 + Dom.getIndexInParent(startNode); 5385 startNode = startNode.parentNode; 5386 continue; 5387 } 5388 5389 // "If start offset is start node's length, break from this loop." 5390 if (startOffset == getNodeLength(startNode)) { 5391 break; 5392 } 5393 5394 // "Let reference node be the child of start node with index equal to 5395 // start offset." 5396 referenceNode = startNode.childNodes[startOffset]; 5397 5398 // "If reference node is a block node or an Element with no children, 5399 // or is neither an Element nor a Text node, break from this loop." 5400 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5401 break; 5402 } 5403 5404 // "Set start node to reference node and start offset to 0." 5405 startNode = referenceNode; 5406 startOffset = 0; 5407 } 5408 5409 // "While end node has at least one child:" 5410 while (endNode.hasChildNodes()) { 5411 // "If end offset is 0, and end node's parent is in the same editing 5412 // host, and end node is an inline node, set end offset to the index of 5413 // end node, then set end node to its parent and continue this loop 5414 // from the beginning." 5415 if (endOffset == 0 && inSameEditingHost(endNode, endNode.parentNode) && isInlineNode(endNode)) { 5416 endOffset = Dom.getIndexInParent(endNode); 5417 endNode = endNode.parentNode; 5418 continue; 5419 } 5420 5421 // "If end offset is 0, break from this loop." 5422 if (endOffset == 0) { 5423 break; 5424 } 5425 5426 // "Let reference node be the child of end node with index equal to end 5427 // offset minus one." 5428 referenceNode = endNode.childNodes[endOffset - 1]; 5429 5430 // "If reference node is a block node or an Element with no children, 5431 // or is neither an Element nor a Text node, break from this loop." 5432 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5433 break; 5434 } 5435 5436 // "Set end node to reference node and end offset to the length of 5437 // reference node." 5438 endNode = referenceNode; 5439 endOffset = getNodeLength(referenceNode); 5440 } 5441 5442 // "If (end node, end offset) is not after (start node, start offset), set 5443 // range's end to its start and abort these steps." 5444 if (getPosition(endNode, endOffset, startNode, startOffset) !== "after") { 5445 range.setEnd(range.startContainer, range.startOffset); 5446 return range; 5447 } 5448 5449 // "If start node is a Text node and start offset is 0, set start offset to 5450 // the index of start node, then set start node to its parent." 5451 // Commented out for unknown reason 5452 //if (startNode.nodeType == $_.Node.TEXT_NODE && startOffset == 0 && startNode != endNode) { 5453 // startOffset = Dom.getIndexInParent(startNode); 5454 // startNode = startNode.parentNode; 5455 //} 5456 5457 // "If end node is a Text node and end offset is its length, set end offset 5458 // to one plus the index of end node, then set end node to its parent." 5459 if (endNode.nodeType == $_.Node.TEXT_NODE && endOffset == getNodeLength(endNode) && startNode != endNode) { 5460 endOffset = 1 + Dom.getIndexInParent(endNode); 5461 endNode = endNode.parentNode; 5462 } 5463 5464 // "Set range's start to (start node, start offset) and its end to (end 5465 // node, end offset)." 5466 range.setStart(startNode, startOffset); 5467 range.setEnd(endNode, endOffset); 5468 5469 // "Let start block be the start node of range." 5470 var startBlock = range.startContainer; 5471 5472 // "While start block's parent is in the same editing host and start block 5473 // is an inline node, set start block to its parent." 5474 while (inSameEditingHost(startBlock, startBlock.parentNode) && isInlineNode(startBlock)) { 5475 startBlock = startBlock.parentNode; 5476 } 5477 5478 // "If start block is neither a block node nor an editing host, or "span" 5479 // is not an allowed child of start block, or start block is a td or th, 5480 // set start block to null." 5481 if ((!isBlockNode(startBlock) && !isEditingHost(startBlock)) || !isAllowedChild("span", startBlock) || isHtmlElementInArray(startBlock, ["td", "th"])) { 5482 startBlock = null; 5483 } 5484 5485 // "Let end block be the end node of range." 5486 var endBlock = range.endContainer; 5487 5488 // "While end block's parent is in the same editing host and end block is 5489 // an inline node, set end block to its parent." 5490 while (inSameEditingHost(endBlock, endBlock.parentNode) && isInlineNode(endBlock)) { 5491 endBlock = endBlock.parentNode; 5492 } 5493 5494 // "If end block is neither a block node nor an editing host, or "span" is 5495 // not an allowed child of end block, or end block is a td or th, set end 5496 // block to null." 5497 if ((!isBlockNode(endBlock) && !isEditingHost(endBlock)) || !isAllowedChild("span", endBlock) || isHtmlElementInArray(endBlock, ["td", "th"])) { 5498 endBlock = null; 5499 } 5500 5501 // "Record current states and values, and let overrides be the result." 5502 var overrides = recordCurrentStatesAndValues(range); 5503 var parent_; 5504 // "If start node and end node are the same, and start node is an editable 5505 // Text node:" 5506 if (startNode == endNode && isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5507 // "Let parent be the parent of node." 5508 parent_ = startNode.parentNode; 5509 5510 // "Call deleteData(start offset, end offset − start offset) on start 5511 // node." 5512 startNode.deleteData(startOffset, endOffset - startOffset); 5513 5514 // if deleting the text moved two spaces together, we replace the left one by a , which makes the two spaces a visible 5515 // two space sequence 5516 if (startOffset > 0 && startNode.data.substr(startOffset - 1, 1) === ' ' && startOffset < startNode.data.length && startNode.data.substr(startOffset, 1) === ' ') { 5517 startNode.replaceData(startOffset - 1, 1, '\xa0'); 5518 } 5519 5520 // "Canonicalize whitespace at (start node, start offset)." 5521 canonicalizeWhitespace(startNode, startOffset); 5522 5523 // "Set range's end to its start." 5524 // Ok, also set the range's start to its start, because modifying the text 5525 // might have somehow corrupted the range 5526 5527 range.setStart(range.startContainer, range.startOffset); 5528 range.setEnd(range.startContainer, range.startOffset); 5529 5530 // "Restore states and values from overrides." 5531 restoreStatesAndValues(overrides, range); 5532 5533 // "If parent is editable or an editing host, is not an inline node, 5534 // and has no children, call createElement("br") on the context object 5535 // and append the result as the last child of parent." 5536 // only do this, if the offsetHeight is 0 5537 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5538 ensureContainerEditable(parent_); 5539 } 5540 5541 // "Abort these steps." 5542 return range; 5543 } 5544 5545 // "If start node is an editable Text node, call deleteData() on it, with 5546 // start offset as the first argument and (length of start node − start 5547 // offset) as the second argument." 5548 if (isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5549 startNode.deleteData(startOffset, getNodeLength(startNode) - startOffset); 5550 } 5551 5552 // "Let node list be a list of nodes, initially empty." 5553 // 5554 // "For each node contained in range, append node to node list if the last 5555 // member of node list (if any) is not an ancestor of node; node is 5556 // editable; and node is not a thead, tbody, tfoot, tr, th, or td." 5557 var nodeList = getContainedNodes( 5558 range, 5559 function (node) { 5560 return isEditable(node) && !isHtmlElementInArray(node, ["thead", "tbody", "tfoot", "tr", "th", "td"]); 5561 } 5562 ); 5563 5564 // "For each node in node list:" 5565 for (i = 0; i < nodeList.length; i++) { 5566 var node = nodeList[i]; 5567 5568 // "Let parent be the parent of node." 5569 parent_ = node.parentNode; 5570 5571 // "Remove node from parent." 5572 parent_.removeChild(node); 5573 5574 // "If strip wrappers is true or parent is not an ancestor container of 5575 // start node, while parent is an editable inline node with length 0, 5576 // let grandparent be the parent of parent, then remove parent from 5577 // grandparent, then set parent to grandparent." 5578 if (stripWrappers || (!isAncestor(parent_, startNode) && parent_ != startNode)) { 5579 while (isEditable(parent_) && isInlineNode(parent_) && getNodeLength(parent_) == 0) { 5580 var grandparent = parent_.parentNode; 5581 grandparent.removeChild(parent_); 5582 parent_ = grandparent; 5583 } 5584 } 5585 5586 // "If parent is editable or an editing host, is not an inline node, 5587 // and has no children, call createElement("br") on the context object 5588 // and append the result as the last child of parent." 5589 // only do this, if the offsetHeight is 0 5590 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5591 ensureContainerEditable(parent_); 5592 } 5593 } 5594 5595 // "If end node is an editable Text node, call deleteData(0, end offset) on 5596 // it." 5597 if (isEditable(endNode) && endNode.nodeType == $_.Node.TEXT_NODE) { 5598 endNode.deleteData(0, endOffset); 5599 } 5600 5601 // "Canonicalize whitespace at range's start." 5602 canonicalizeWhitespace(range.startContainer, range.startOffset); 5603 5604 // "Canonicalize whitespace at range's end." 5605 canonicalizeWhitespace(range.endContainer, range.endOffset); 5606 5607 // A reference to the position where a node is removed. 5608 var pos; 5609 5610 // "If block merging is false, or start block or end block is null, or 5611 // start block is not in the same editing host as end block, or start block 5612 // and end block are the same:" 5613 if (!blockMerging || !startBlock || !endBlock || !inSameEditingHost(startBlock, endBlock) || startBlock == endBlock) { 5614 // "Set range's end to its start." 5615 range.setEnd(range.startContainer, range.startOffset); 5616 5617 // Calling delete on the give markup: 5618 // <editable><block><br>[]</block></editable> 5619 // should result in: 5620 // <editable>[]</editable> 5621 var block = startBlock || endBlock; 5622 if (isEmptyOnlyChildOfEditingHost(block)) { 5623 pos = removeNode(block); 5624 range.setStart(pos.node, pos.offset); 5625 range.setEnd(pos.node, pos.offset); 5626 } 5627 5628 // "Restore states and values from overrides." 5629 restoreStatesAndValues(overrides, range); 5630 5631 // "Abort these steps." 5632 return range; 5633 } 5634 5635 // "If start block has one child, which is a collapsed block prop, remove 5636 // its child from it." 5637 if (startBlock.children.length == 1 && isCollapsedBlockProp(startBlock.firstChild)) { 5638 startBlock.removeChild(startBlock.firstChild); 5639 } 5640 5641 // "If end block has one child, which is a collapsed block prop, remove its 5642 // child from it." 5643 if (endBlock.children.length == 1 && isCollapsedBlockProp(endBlock.firstChild)) { 5644 endBlock.removeChild(endBlock.firstChild); 5645 } 5646 5647 var values; 5648 // "If start block is an ancestor of end block:" 5649 if (isAncestor(startBlock, endBlock)) { 5650 // "Let reference node be end block." 5651 referenceNode = endBlock; 5652 5653 // "While reference node is not a child of start block, set reference 5654 // node to its parent." 5655 while (referenceNode.parentNode != startBlock) { 5656 referenceNode = referenceNode.parentNode; 5657 } 5658 5659 // "Set the start and end of range to (start block, index of reference 5660 // node)." 5661 range.setStart(startBlock, Dom.getIndexInParent(referenceNode)); 5662 range.setEnd(startBlock, Dom.getIndexInParent(referenceNode)); 5663 5664 // "If end block has no children:" 5665 if (!endBlock.hasChildNodes()) { 5666 // "While end block is editable and is the only child of its parent 5667 // and is not a child of start block, let parent equal end block, 5668 // then remove end block from parent, then set end block to 5669 // parent." 5670 while (isEditable(endBlock) && endBlock.parentNode.childNodes.length == 1 && endBlock.parentNode != startBlock) { 5671 parent_ = endBlock; 5672 parent_.removeChild(endBlock); 5673 endBlock = parent_; 5674 } 5675 5676 // "If end block is editable and is not an inline node, and its 5677 // previousSibling and nextSibling are both inline nodes, call 5678 // createElement("br") on the context object and insert it into end 5679 // block's parent immediately after end block." 5680 5681 if (isEditable(endBlock) && !isInlineNode(endBlock) && isInlineNode(endBlock.previousSibling) && isInlineNode(endBlock.nextSibling)) { 5682 endBlock.parentNode.insertBefore(document.createElement("br"), endBlock.nextSibling); 5683 } 5684 5685 // "If end block is editable, remove it from its parent." 5686 5687 if (isEditable(endBlock)) { 5688 endBlock.parentNode.removeChild(endBlock); 5689 } 5690 5691 // "Restore states and values from overrides." 5692 restoreStatesAndValues(overrides, range); 5693 5694 // "Abort these steps." 5695 return range; 5696 } 5697 5698 // "If end block's firstChild is not an inline node, restore states and 5699 // values from overrides, then abort these steps." 5700 if (!isInlineNode(endBlock.firstChild)) { 5701 restoreStatesAndValues(overrides, range); 5702 return range; 5703 } 5704 5705 // "Let children be a list of nodes, initially empty." 5706 var children = []; 5707 5708 // "Append the first child of end block to children." 5709 children.push(endBlock.firstChild); 5710 5711 // "While children's last member is not a br, and children's last 5712 // member's nextSibling is an inline node, append children's last 5713 // member's nextSibling to children." 5714 while (!isNamedHtmlElement(children[children.length - 1], "br") && isInlineNode(children[children.length - 1].nextSibling)) { 5715 children.push(children[children.length - 1].nextSibling); 5716 } 5717 5718 // "Record the values of children, and let values be the result." 5719 values = recordValues(children); 5720 5721 // "While children's first member's parent is not start block, split 5722 // the parent of children." 5723 while (children[0].parentNode != startBlock) { 5724 splitParent(children, range); 5725 } 5726 5727 // "If children's first member's previousSibling is an editable br, 5728 // remove that br from its parent." 5729 if (isEditable(children[0].previousSibling) && isNamedHtmlElement(children[0].previousSibling, "br")) { 5730 children[0].parentNode.removeChild(children[0].previousSibling); 5731 } 5732 5733 // "Otherwise, if start block is a descendant of end block:" 5734 } else if (isDescendant(startBlock, endBlock)) { 5735 // "Set the start and end of range to (start block, length of start 5736 // block)." 5737 range.setStart(startBlock, getNodeLength(startBlock)); 5738 range.setEnd(startBlock, getNodeLength(startBlock)); 5739 5740 // "Let reference node be start block." 5741 referenceNode = startBlock; 5742 5743 // "While reference node is not a child of end block, set reference 5744 // node to its parent." 5745 while (referenceNode.parentNode != endBlock) { 5746 referenceNode = referenceNode.parentNode; 5747 } 5748 5749 // "If reference node's nextSibling is an inline node and start block's 5750 // lastChild is a br, remove start block's lastChild from it." 5751 if (isInlineNode(referenceNode.nextSibling) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5752 startBlock.removeChild(startBlock.lastChild); 5753 } 5754 5755 // "Let nodes to move be a list of nodes, initially empty." 5756 var nodesToMove = []; 5757 5758 // "If reference node's nextSibling is neither null nor a br nor a 5759 // block node, append it to nodes to move." 5760 if (referenceNode.nextSibling && !isNamedHtmlElement(referenceNode.nextSibling, "br") && !isBlockNode(referenceNode.nextSibling)) { 5761 nodesToMove.push(referenceNode.nextSibling); 5762 } 5763 5764 // "While nodes to move is nonempty and its last member's nextSibling 5765 // is neither null nor a br nor a block node, append it to nodes to 5766 // move." 5767 if (nodesToMove.length && nodesToMove[nodesToMove.length - 1].nextSibling && !isNamedHtmlElement(nodesToMove[nodesToMove.length - 1].nextSibling, "br") && !isBlockNode(nodesToMove[nodesToMove.length - 1].nextSibling)) { 5768 nodesToMove.push(nodesToMove[nodesToMove.length - 1].nextSibling); 5769 } 5770 5771 // "Record the values of nodes to move, and let values be the result." 5772 values = recordValues(nodesToMove); 5773 5774 // "For each node in nodes to move, append node as the last child of 5775 // start block, preserving ranges." 5776 $_(nodesToMove).forEach(function (node) { 5777 movePreservingRanges(node, startBlock, -1, range); 5778 }); 5779 5780 // "If the nextSibling of reference node is a br, remove it from its 5781 // parent." 5782 if (isNamedHtmlElement(referenceNode.nextSibling, "br")) { 5783 referenceNode.parentNode.removeChild(referenceNode.nextSibling); 5784 } 5785 5786 // "Otherwise:" 5787 } else { 5788 // "Set the start and end of range to (start block, length of start 5789 // block)." 5790 range.setStart(startBlock, getNodeLength(startBlock)); 5791 range.setEnd(startBlock, getNodeLength(startBlock)); 5792 5793 // "If end block's firstChild is an inline node and start block's 5794 // lastChild is a br, remove start block's lastChild from it." 5795 if (isInlineNode(endBlock.firstChild) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5796 startBlock.removeChild(startBlock.lastChild); 5797 } 5798 5799 // "Record the values of end block's children, and let values be the 5800 // result." 5801 values = recordValues([].slice.call(toArray(endBlock.childNodes))); 5802 5803 // "While end block has children, append the first child of end block 5804 // to start block, preserving ranges." 5805 while (endBlock.hasChildNodes()) { 5806 movePreservingRanges(endBlock.firstChild, startBlock, -1, range); 5807 } 5808 5809 // "While end block has no children, let parent be the parent of end 5810 // block, then remove end block from parent, then set end block to 5811 // parent." 5812 while (!endBlock.hasChildNodes()) { 5813 parent_ = endBlock.parentNode; 5814 parent_.removeChild(endBlock); 5815 endBlock = parent_; 5816 } 5817 } 5818 5819 // "Restore the values from values." 5820 restoreValues(values, range); 5821 5822 // Because otherwise calling deleteContents() with the given selection: 5823 // 5824 // <editable><block>[foo</block><block>bar]</block></editable> 5825 5826 // 5827 // would result in: 5828 // 5829 // <editable><block>[]<br /></block></editable> 5830 // 5831 // instead of: 5832 // 5833 // <editable>[]</editable> 5834 // 5835 // Therefore, the below makes it possible to completely empty contents 5836 // of editing hosts via operations like CTRL+A, DEL. 5837 // 5838 // If startBlock is empty, and startBlock is the immediate and only 5839 // child of its parent editing host, then remove startBlock and collapse 5840 // the selection at the beginning of the editing post. 5841 if (isEmptyOnlyChildOfEditingHost(startBlock)) { 5842 pos = removeNode(startBlock); 5843 range.setStart(pos.node, pos.offset); 5844 range.setEnd(pos.node, pos.offset); 5845 startBlock = pos.node; 5846 } 5847 5848 // "If start block has no children, call createElement("br") on the context 5849 // object and append the result as the last child of start block." 5850 ensureContainerEditable(startBlock); 5851 5852 // "Restore states and values from overrides." 5853 restoreStatesAndValues(overrides, range); 5854 5855 return range; 5856 } 5857 5858 // "To remove a node node while preserving its descendants, split the parent of 5859 // node's children if it has any. If it has no children, instead remove it from 5860 // its parent." 5861 function removePreservingDescendants(node, range) { 5862 if (node.hasChildNodes()) { 5863 splitParent([].slice.call(toArray(node.childNodes)), range); 5864 } else { 5865 node.parentNode.removeChild(node); 5866 } 5867 } 5868 5869 //@} 5870 ///// Indenting and outdenting ///// 5871 //@{ 5872 5873 function cleanLists(node, range) { 5874 // remove any whitespace nodes around list nodes 5875 if (node) { 5876 jQuery(node).find('ul,ol,li').each(function () { 5877 jQuery(this).contents().each(function () { 5878 if (isWhitespaceNode(this)) { 5879 var index = Dom.getIndexInParent(this); 5880 5881 // if the range points to somewhere behind the removed text node, we reduce the offset 5882 if (range.startContainer === this.parentNode && range.startOffset > index) { 5883 range.startOffset--; 5884 } else if (range.startContainer === this) { 5885 // the range starts in the removed text node, let it start right before 5886 range.startContainer = this.parentNode; 5887 range.startOffset = index; 5888 } 5889 // same thing for end of the range 5890 if (range.endContainer === this.parentNode && range.endOffset > index) { 5891 range.endOffset--; 5892 } else if (range.endContainer === this) { 5893 range.endContainer = this.parentNode; 5894 range.endOffset = index; 5895 } 5896 // finally remove the whitespace node 5897 jQuery(this).remove(); 5898 } 5899 }); 5900 }); 5901 } 5902 } 5903 5904 5905 //@} 5906 ///// Indenting and outdenting ///// 5907 //@{ 5908 5909 function indentNodes(nodeList, range) { 5910 // "If node list is empty, do nothing and abort these steps." 5911 if (!nodeList.length) { 5912 return; 5913 } 5914 5915 // "Let first node be the first member of node list." 5916 var firstNode = nodeList[0]; 5917 5918 // "If first node's parent is an ol or ul:" 5919 if (isHtmlElementInArray(firstNode.parentNode, ["OL", "UL"])) { 5920 // "Let tag be the local name of the parent of first node." 5921 var tag = firstNode.parentNode.tagName; 5922 5923 // "Wrap node list, with sibling criteria returning true for an HTML 5924 // element with local name tag and false otherwise, and new parent 5925 // instructions returning the result of calling createElement(tag) on 5926 // the ownerDocument of first node." 5927 wrap( 5928 nodeList, 5929 function (node) { 5930 return isHtmlElement_obsolete(node, tag); 5931 }, 5932 function () { 5933 return firstNode.ownerDocument.createElement(tag); 5934 }, 5935 range 5936 ); 5937 5938 // "Abort these steps." 5939 return; 5940 } 5941 5942 // "Wrap node list, with sibling criteria returning true for a simple 5943 // indentation element and false otherwise, and new parent instructions 5944 // returning the result of calling createElement("blockquote") on the 5945 // ownerDocument of first node. Let new parent be the result." 5946 var newParent = wrap( 5947 nodeList, 5948 function (node) { 5949 return isSimpleIndentationElement(node); 5950 }, 5951 function () { 5952 return firstNode.ownerDocument.createElement("blockquote"); 5953 }, 5954 range 5955 ); 5956 5957 // "Fix disallowed ancestors of new parent." 5958 fixDisallowedAncestors(newParent, range); 5959 } 5960 5961 function outdentNode(node, range) { 5962 // "If node is not editable, abort these steps." 5963 if (!isEditable(node)) { 5964 return; 5965 } 5966 5967 // "If node is a simple indentation element, remove node, preserving its 5968 // descendants. Then abort these steps." 5969 if (isSimpleIndentationElement(node)) { 5970 removePreservingDescendants(node, range); 5971 return; 5972 } 5973 5974 // "If node is an indentation element:" 5975 if (isIndentationElement(node)) { 5976 // "Unset the class and dir attributes of node, if any." 5977 node.removeAttribute("class"); 5978 node.removeAttribute("dir"); 5979 5980 // "Unset the margin, padding, and border CSS properties of node." 5981 node.style.margin = ""; 5982 node.style.padding = ""; 5983 node.style.border = ""; 5984 if (node.getAttribute("style") == "") { 5985 node.removeAttribute("style"); 5986 } 5987 5988 // "Set the tag name of node to "div"." 5989 setTagName(node, "div", range); 5990 5991 // "Abort these steps." 5992 return; 5993 } 5994 5995 // "Let current ancestor be node's parent." 5996 var currentAncestor = node.parentNode; 5997 5998 // "Let ancestor list be a list of nodes, initially empty." 5999 var ancestorList = []; 6000 6001 // "While current ancestor is an editable Element that is neither a simple 6002 // indentation element nor an ol nor a ul, append current ancestor to 6003 // ancestor list and then set current ancestor to its parent." 6004 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isSimpleIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6005 ancestorList.push(currentAncestor); 6006 currentAncestor = currentAncestor.parentNode; 6007 } 6008 6009 // "If current ancestor is not an editable simple indentation element:" 6010 if (!isEditable(currentAncestor) || !isSimpleIndentationElement(currentAncestor)) { 6011 // "Let current ancestor be node's parent." 6012 currentAncestor = node.parentNode; 6013 6014 // "Let ancestor list be the empty list." 6015 ancestorList = []; 6016 6017 // "While current ancestor is an editable Element that is neither an 6018 // indentation element nor an ol nor a ul, append current ancestor to 6019 // ancestor list and then set current ancestor to its parent." 6020 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6021 ancestorList.push(currentAncestor); 6022 currentAncestor = currentAncestor.parentNode; 6023 } 6024 } 6025 6026 // "If node is an ol or ul and current ancestor is not an editable 6027 // indentation element:" 6028 if (isHtmlElementInArray(node, ["OL", "UL"]) && (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor))) { 6029 // "Unset the reversed, start, and type attributes of node, if any are 6030 // set." 6031 node.removeAttribute("reversed"); 6032 node.removeAttribute("start"); 6033 node.removeAttribute("type"); 6034 6035 // "Let children be the children of node." 6036 var children = [].slice.call(toArray(node.childNodes)); 6037 6038 // "If node has attributes, and its parent is not an ol or ul, set the 6039 // tag name of node to "div"." 6040 if (node.attributes.length && !isHtmlElementInArray(node.parentNode, ["OL", "UL"])) { 6041 setTagName(node, "div", range); 6042 6043 // "Otherwise:" 6044 } else { 6045 // "Record the values of node's children, and let values be the 6046 // result." 6047 var values = recordValues([].slice.call(toArray(node.childNodes))); 6048 6049 // "Remove node, preserving its descendants." 6050 removePreservingDescendants(node, range); 6051 6052 // "Restore the values from values." 6053 restoreValues(values, range); 6054 6055 } 6056 6057 // "Fix disallowed ancestors of each member of children." 6058 var i; 6059 for (i = 0; i < children.length; i++) { 6060 fixDisallowedAncestors(children[i], range); 6061 } 6062 6063 // "Abort these steps." 6064 return; 6065 } 6066 6067 // "If current ancestor is not an editable indentation element, abort these 6068 // steps." 6069 if (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor)) { 6070 return; 6071 } 6072 6073 // "Append current ancestor to ancestor list." 6074 ancestorList.push(currentAncestor); 6075 6076 // "Let original ancestor be current ancestor." 6077 var originalAncestor = currentAncestor; 6078 6079 // "While ancestor list is not empty:" 6080 while (ancestorList.length) { 6081 // "Let current ancestor be the last member of ancestor list." 6082 // 6083 // "Remove the last member of ancestor list." 6084 currentAncestor = ancestorList.pop(); 6085 6086 // "Let target be the child of current ancestor that is equal to either 6087 // node or the last member of ancestor list." 6088 var target = node.parentNode == currentAncestor ? node : ancestorList[ancestorList.length - 1]; 6089 6090 // "If target is an inline node that is not a br, and its nextSibling 6091 // is a br, remove target's nextSibling from its parent." 6092 if (isInlineNode(target) && !isNamedHtmlElement(target, 'BR') && isNamedHtmlElement(target.nextSibling, "BR")) { 6093 target.parentNode.removeChild(target.nextSibling); 6094 } 6095 6096 // "Let preceding siblings be the preceding siblings of target, and let 6097 // following siblings be the following siblings of target." 6098 var precedingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 0, Dom.getIndexInParent(target)); 6099 var followingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 1 + Dom.getIndexInParent(target)); 6100 6101 // "Indent preceding siblings." 6102 indentNodes(precedingSiblings, range); 6103 6104 // "Indent following siblings." 6105 indentNodes(followingSiblings, range); 6106 } 6107 6108 // "Outdent original ancestor." 6109 outdentNode(originalAncestor, range); 6110 } 6111 6112 6113 //@} 6114 ///// Toggling lists ///// 6115 //@{ 6116 6117 function toggleLists(tagName, range) { 6118 // "Let mode be "disable" if the selection's list state is tag name, and 6119 // "enable" otherwise." 6120 var mode = getSelectionListState() == tagName ? "disable" : "enable"; 6121 6122 tagName = tagName.toUpperCase(); 6123 6124 // "Let other tag name be "ol" if tag name is "ul", and "ul" if tag name is 6125 // "ol"." 6126 var otherTagName = tagName == "OL" ? "UL" : "OL"; 6127 6128 // "Let items be a list of all lis that are ancestor containers of the 6129 // range's start and/or end node." 6130 // 6131 // It's annoying to get this in tree order using functional stuff without 6132 // doing getDescendants(document), which is slow, so I do it imperatively. 6133 var items = []; 6134 (function () { 6135 var ancestorContainer; 6136 for (ancestorContainer = range.endContainer; 6137 ancestorContainer != range.commonAncestorContainer; 6138 ancestorContainer = ancestorContainer.parentNode) { 6139 if (isNamedHtmlElement(ancestorContainer, "li")) { 6140 items.unshift(ancestorContainer); 6141 } 6142 } 6143 for (ancestorContainer = range.startContainer; 6144 ancestorContainer; 6145 ancestorContainer = ancestorContainer.parentNode) { 6146 if (isNamedHtmlElement(ancestorContainer, "li")) { 6147 items.unshift(ancestorContainer); 6148 } 6149 } 6150 }()); 6151 6152 // "For each item in items, normalize sublists of item." 6153 $_(items).forEach(function (thisArg) { 6154 normalizeSublists(thisArg, range); 6155 }); 6156 6157 // "Block-extend the range, and let new range be the result." 6158 var newRange = blockExtend(range); 6159 6160 // "If mode is "enable", then let lists to convert consist of every 6161 // editable HTML element with local name other tag name that is contained 6162 // in new range, and for every list in lists to convert:" 6163 if (mode == "enable") { 6164 $_(getAllContainedNodes(newRange, function (node) { 6165 return isEditable(node) && isHtmlElement_obsolete(node, otherTagName); 6166 })).forEach(function (list) { 6167 // "If list's previousSibling or nextSibling is an editable HTML 6168 // element with local name tag name:" 6169 if ((isEditable(list.previousSibling) && isHtmlElement_obsolete(list.previousSibling, tagName)) || (isEditable(list.nextSibling) && isHtmlElement_obsolete(list.nextSibling, tagName))) { 6170 // "Let children be list's children." 6171 var children = [].slice.call(toArray(list.childNodes)); 6172 6173 // "Record the values of children, and let values be the 6174 // result." 6175 var values = recordValues(children); 6176 6177 // "Split the parent of children." 6178 splitParent(children, range); 6179 6180 // "Wrap children, with sibling criteria returning true for an 6181 // HTML element with local name tag name and false otherwise." 6182 wrap( 6183 children, 6184 function (node) { 6185 return isHtmlElement_obsolete(node, tagName); 6186 }, 6187 function () { 6188 return null; 6189 }, 6190 range 6191 ); 6192 6193 // "Restore the values from values." 6194 restoreValues(values, range); 6195 6196 // "Otherwise, set the tag name of list to tag name." 6197 } else { 6198 setTagName(list, tagName, range); 6199 } 6200 }); 6201 } 6202 6203 // "Let node list be a list of nodes, initially empty." 6204 // 6205 // "For each node node contained in new range, if node is editable; the 6206 // last member of node list (if any) is not an ancestor of node; node 6207 // is not an indentation element; and either node is an ol or ul, or its 6208 // parent is an ol or ul, or it is an allowed child of "li"; then append 6209 // node to node list." 6210 var nodeList = getContainedNodes(newRange, function (node) { 6211 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["OL", "UL"]) || isHtmlElementInArray(node.parentNode, ["OL", "UL"]) || isAllowedChild(node, "li")); 6212 }); 6213 6214 // "If mode is "enable", remove from node list any ol or ul whose parent is 6215 // not also an ol or ul." 6216 if (mode == "enable") { 6217 nodeList = $_(nodeList).filter(function (node) { 6218 return !isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]); 6219 }); 6220 } 6221 6222 // "If mode is "disable", then while node list is not empty:" 6223 var sublist, values; 6224 6225 function createLi() { 6226 return document.createElement("li"); 6227 } 6228 6229 function isOlUl(node) { 6230 return isHtmlElementInArray(node, ["ol", "ul"]); 6231 } 6232 6233 function makeIsElementPred(tagName) { 6234 return function (node) { 6235 return isHtmlElement_obsolete(node, tagName); 6236 }; 6237 } 6238 6239 function makeCreateElement(tagName) { 6240 return function () { 6241 return document.createElement(tagName); 6242 }; 6243 } 6244 6245 function makeCreateElementSublist(tagName, sublist, range) { 6246 return function () { 6247 // "If sublist's first member's parent is not an editable 6248 // simple indentation element, or sublist's first member's 6249 // parent's previousSibling is not an editable HTML element 6250 // with local name tag name, call createElement(tag name) 6251 // on the context object and return the result." 6252 if (!isEditable(sublist[0].parentNode) || !isSimpleIndentationElement(sublist[0].parentNode) || !isEditable(sublist[0].parentNode.previousSibling) || !isHtmlElement_obsolete(sublist[0].parentNode.previousSibling, tagName)) { 6253 return document.createElement(tagName); 6254 } 6255 6256 // "Let list be sublist's first member's parent's 6257 // previousSibling." 6258 var list = sublist[0].parentNode.previousSibling; 6259 6260 // "Normalize sublists of list's lastChild." 6261 normalizeSublists(list.lastChild, range); 6262 6263 // "If list's lastChild is not an editable HTML element 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 6472 // the last member of node list (if any) is not an ancestor of node; node 6473 // is editable; node is an allowed child of "div"; and node's alignment 6474 // value is not alignment." 6475 nodeList = getContainedNodes(newRange, function (node) { 6476 return isEditable(node) && isAllowedChild(node, "div") && getAlignmentValue(node) != alignment; 6477 }); 6478 6479 function makeIsAlignedDiv(alignment) { 6480 return function (node) { 6481 return isNamedHtmlElement(node, 'div') && $_(node.attributes).every(function (attr) { 6482 return (attr.name == "align" && attr.value.toLowerCase() == alignment) || (attr.name == "style" && getStyleLength(node) == 1 && node.style.textAlign == alignment); 6483 }); 6484 }; 6485 } 6486 6487 function makeCreateAlignedDiv(alignment) { 6488 return function () { 6489 var newParent = document.createElement("div"); 6490 newParent.setAttribute("style", "text-align: " + alignment); 6491 return newParent; 6492 }; 6493 } 6494 6495 // "While node list is not empty:" 6496 while (nodeList.length) { 6497 // "Let sublist be a list of nodes, initially empty." 6498 var sublist = []; 6499 6500 // "Remove the first member of node list and append it to sublist." 6501 sublist.push(nodeList.shift()); 6502 6503 // "While node list is not empty, and the first member of node list is 6504 // the nextSibling of the last member of sublist, remove the first 6505 // member of node list and append it to sublist." 6506 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 6507 sublist.push(nodeList.shift()); 6508 } 6509 6510 // "Wrap sublist. Sibling criteria returns true for any div that has 6511 // one or both of the following two attributes and no other attributes, 6512 // and false otherwise:" 6513 // 6514 // * "An align attribute whose value is an ASCII case-insensitive 6515 // match for alignment. 6516 // * "A style attribute which sets exactly one CSS property 6517 // (including unrecognized or invalid attributes), which is 6518 // "text-align", which is set to alignment. 6519 // 6520 // "New parent instructions are to call createElement("div") on the 6521 // context object, then set its CSS property "text-align" to alignment 6522 // and return the result." 6523 6524 wrap( 6525 sublist, 6526 makeIsAlignedDiv(alignment), 6527 makeCreateAlignedDiv(alignment), 6528 range 6529 ); 6530 } 6531 } 6532 6533 //@} 6534 ///// Move the given collapsed range over adjacent zero-width whitespace characters. 6535 ///// The range is 6536 //@{ 6537 /** 6538 * Move the given collapsed range over adjacent zero-width whitespace characters. 6539 * If the range is not collapsed or is not contained in a text node, it is not modified 6540 * @param range range to modify 6541 * @param forward {Boolean} true to move forward, false to move backward 6542 6543 */ 6544 function moveOverZWSP(range, forward) { 6545 var offset; 6546 if (!range.collapsed) { 6547 return; 6548 } 6549 6550 offset = range.startOffset; 6551 6552 if (forward) { 6553 // check whether the range starts in a text node 6554 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6555 // move forward (i.e. increase offset) as long as we stay in the text node and have zwsp characters to the right 6556 while (offset < range.startContainer.data.length && range.startContainer.data.charAt(offset) === '\u200b') { 6557 offset++; 6558 } 6559 } 6560 } else { 6561 // check whether the range starts in a text node 6562 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6563 // move backward (i.e. decrease offset) as long as we stay in the text node and have zwsp characters to the left 6564 while (offset > 0 && range.startContainer.data.charAt(offset - 1) === '\u200b') { 6565 offset--; 6566 } 6567 } 6568 } 6569 6570 // if the offset was changed, set it back to the collapsed range 6571 if (offset !== range.startOffset) { 6572 range.setStart(range.startContainer, offset); 6573 range.setEnd(range.startContainer, offset); 6574 } 6575 } 6576 6577 /** 6578 * implementation of the delete command 6579 * will attempt to delete contents within range if non-collapsed 6580 * or delete the character left of the cursor position if range 6581 * is collapsed. Is used to define the behaviour of the backspace 6582 * button. 6583 * 6584 * @param value is just there for compatibility with the commands api. parameter is ignored. 6585 * @param range the range to execute the delete command for 6586 * @return void 6587 */ 6588 commands["delete"] = { 6589 action: function (value, range) { 6590 var i; 6591 6592 // special behaviour for skipping zero-width whitespaces in IE7 6593 if (jQuery.browser.msie && jQuery.browser.version <= 7) { 6594 moveOverZWSP(range, false); 6595 } 6596 6597 // "If the active range is not collapsed, delete the contents of the 6598 // active range and abort these steps." 6599 if (!range.collapsed) { 6600 deleteContents(range); 6601 return; 6602 } 6603 6604 // "Canonicalize whitespace at (active range's start node, active 6605 // range's start offset)." 6606 canonicalizeWhitespace(range.startContainer, range.startOffset); 6607 6608 // "Let node and offset be the active range's start node and offset." 6609 var node = range.startContainer; 6610 var offset = range.startOffset; 6611 var isBr = false; 6612 var isHr = false; 6613 6614 // "Repeat the following steps:" 6615 while (true) { 6616 // we need to reset isBr and isHr on every interation of the loop 6617 if (offset > 0) { 6618 isBr = isNamedHtmlElement(node.childNodes[offset - 1], "br") || false; 6619 isHr = isNamedHtmlElement(node.childNodes[offset - 1], "hr") || false; 6620 } 6621 // "If offset is zero and node's previousSibling is an editable 6622 // invisible node, remove node's previousSibling from its parent." 6623 if (offset == 0 && isEditable(node.previousSibling) && isInvisible(node.previousSibling)) { 6624 node.parentNode.removeChild(node.previousSibling); 6625 continue; 6626 } 6627 // "Otherwise, if node has a child with index offset − 1 and that 6628 // child is an editable invisible node, remove that child from 6629 // node, then subtract one from offset." 6630 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && (isInvisible(node.childNodes[offset - 1]) || isBr || isHr)) { 6631 node.removeChild(node.childNodes[offset - 1]); 6632 offset--; 6633 if (isBr || isHr) { 6634 range.setStart(node, offset); 6635 range.setEnd(node, offset); 6636 return; 6637 } 6638 continue; 6639 6640 } 6641 // "Otherwise, if offset is zero and node is an inline node, or if 6642 // node is an invisible node, set offset to the index of node, then 6643 // set node to its parent." 6644 if ((offset == 0 && isInlineNode(node)) || isInvisible(node)) { 6645 offset = Dom.getIndexInParent(node); 6646 node = node.parentNode; 6647 continue; 6648 } 6649 // "Otherwise, if node has a child with index offset − 1 and that 6650 // child is an editable a, remove that child from node, preserving 6651 // its descendants. Then abort these steps." 6652 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && isNamedHtmlElement(node.childNodes[offset - 1], "a")) { 6653 removePreservingDescendants(node.childNodes[offset - 1], range); 6654 return; 6655 6656 } 6657 // "Otherwise, if node has a child with index offset − 1 and that 6658 // child is not a block node or a br or an img, set node to that 6659 // child, then set offset to the length of node." 6660 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && !isBlockNode(node.childNodes[offset - 1]) && !isHtmlElementInArray(node.childNodes[offset - 1], ["br", "img"])) { 6661 node = node.childNodes[offset - 1]; 6662 offset = getNodeLength(node); 6663 continue; 6664 } 6665 // "Otherwise, break from this loop." 6666 // brk is a quick and dirty jslint workaround since I don't want to rewrite this loop 6667 var brk = true; 6668 if (brk) { 6669 break; 6670 } 6671 } 6672 6673 // if the previous node is an aloha-table we want to delete it 6674 var delBlock = getBlockAtPreviousPosition(node, offset); 6675 if (delBlock) { 6676 delBlock.parentNode.removeChild(delBlock); 6677 return; 6678 } 6679 6680 // "If node is a Text node and offset is not zero, call collapse(node, 6681 // offset) on the Selection. Then delete the contents of the range with 6682 // start (node, offset − 1) and end (node, offset) and abort these 6683 // steps." 6684 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0) { 6685 range.setStart(node, offset - 1); 6686 range.setEnd(node, offset - 1); 6687 deleteContents(node, offset - 1, node, offset); 6688 return; 6689 } 6690 6691 // @iebug 6692 // when inserting a special char via the plugin 6693 // there where problems deleting them again with backspace after insertation 6694 // see https://github.com/alohaeditor/Aloha-Editor/issues/517 6695 if (node.nodeType == $_.Node.TEXT_NODE && offset == 0 && jQuery.browser.msie) { 6696 offset = 1; 6697 range.setStart(node, offset); 6698 range.setEnd(node, offset); 6699 range.startOffset = 0; 6700 deleteContents(range); 6701 return; 6702 } 6703 6704 // "If node is an inline node, abort these steps." 6705 if (isInlineNode(node)) { 6706 return; 6707 } 6708 6709 // "If node has a child with index offset − 1 and that child is a br or 6710 // hr or img, call collapse(node, offset) on the Selection. Then delete 6711 // the contents of the range with start (node, offset − 1) and end 6712 // (node, offset) and abort these steps." 6713 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset - 1], ["br", "hr", "img"])) { 6714 range.setStart(node, offset); 6715 range.setEnd(node, offset); 6716 deleteContents(range); 6717 return; 6718 } 6719 6720 // "If node is an li or dt or dd and is the first child of its parent, 6721 // and offset is zero:" 6722 if (isHtmlElementInArray(node, ["li", "dt", "dd"]) && node == node.parentNode.firstChild && offset == 0) { 6723 // "Let items be a list of all lis that are ancestors of node." 6724 // 6725 // Remember, must be in tree order. 6726 var items = []; 6727 var ancestor; 6728 for (ancestor = node.parentNode; ancestor; ancestor = ancestor.parentNode) { 6729 if (isNamedHtmlElement(ancestor, 'li')) { 6730 items.unshift(ancestor); 6731 } 6732 } 6733 6734 // "Normalize sublists of each item in items." 6735 for (i = 0; i < items.length; i++) { 6736 normalizeSublists(items[i], range); 6737 } 6738 6739 // "Record the values of the one-node list consisting of node, and 6740 // let values be the result." 6741 var values = recordValues([node]); 6742 6743 // "Split the parent of the one-node list consisting of node." 6744 splitParent([node], range); 6745 6746 // "Restore the values from values." 6747 restoreValues(values, range); 6748 6749 // "If node is a dd or dt, and it is not an allowed child of any of 6750 // its ancestors in the same editing host, set the tag name of node 6751 // to the default single-line container name and let node be the 6752 // result." 6753 if (isHtmlElementInArray(node, ["dd", "dt"]) && $_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); })) { 6754 node = setTagName(node, defaultSingleLineContainerName, range); 6755 } 6756 6757 // "Fix disallowed ancestors of node." 6758 fixDisallowedAncestors(node, range); 6759 6760 // fix the lists to be html5 conformant 6761 for (i = 0; i < items.length; i++) { 6762 unNormalizeSublists(items[i].parentNode, range); 6763 } 6764 6765 // "Abort these steps." 6766 return; 6767 } 6768 6769 // "Let start node equal node and let start offset equal offset." 6770 var startNode = node; 6771 var startOffset = offset; 6772 6773 // "Repeat the following steps:" 6774 while (true) { 6775 // "If start offset is zero, set start offset to the index of start 6776 // node and then set start node to its parent." 6777 if (startOffset == 0) { 6778 startOffset = Dom.getIndexInParent(startNode); 6779 startNode = startNode.parentNode; 6780 6781 // "Otherwise, if start node has an editable invisible child with 6782 // index start offset minus one, remove it from start node and 6783 // subtract one from start offset." 6784 } else if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) { 6785 startNode.removeChild(startNode.childNodes[startOffset - 1]); 6786 startOffset--; 6787 6788 // "Otherwise, break from this loop." 6789 } else { 6790 break; 6791 } 6792 } 6793 6794 // "If offset is zero, and node has an editable ancestor container in 6795 // the same editing host that's an indentation element:" 6796 if (offset == 0 && $_(getAncestors(node).concat(node)).filter(function (ancestor) { return isEditable(ancestor) && inSameEditingHost(ancestor, node) && isIndentationElement(ancestor); }).length) { 6797 // "Block-extend the range whose start and end are both (node, 0), 6798 // and let new range be the result." 6799 var newRange = Aloha.createRange(); 6800 newRange.setStart(node, 0); 6801 newRange.setEnd(node, 0); 6802 newRange = blockExtend(newRange); 6803 6804 // "Let node list be a list of nodes, initially empty." 6805 // 6806 // "For each node current node contained in new range, append 6807 // current node to node list if the last member of node list (if 6808 // any) is not an ancestor of current node, and current node is 6809 // editable but has no editable descendants." 6810 var nodeList = getContainedNodes(newRange, function (currentNode) { 6811 return isEditable(currentNode) && !hasEditableDescendants(currentNode); 6812 }); 6813 6814 // "Outdent each node in node list." 6815 for (i = 0; i < nodeList.length; i++) { 6816 outdentNode(nodeList[i], range); 6817 } 6818 6819 // "Abort these steps." 6820 return; 6821 } 6822 6823 // "If the child of start node with index start offset is a table, 6824 // abort these steps." 6825 if (isNamedHtmlElement(startNode.childNodes[startOffset], "table")) { 6826 return; 6827 } 6828 6829 // "If start node has a child with index start offset − 1, and that 6830 // child is a table:" 6831 if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isNamedHtmlElement(startNode.childNodes[startOffset - 1], "table")) { 6832 // "Call collapse(start node, start offset − 1) on the context 6833 // object's Selection." 6834 range.setStart(startNode, startOffset - 1); 6835 6836 // "Call extend(start node, start offset) on the context object's 6837 // Selection." 6838 range.setEnd(startNode, startOffset); 6839 6840 // "Abort these steps." 6841 return; 6842 } 6843 6844 // "If offset is zero; and either the child of start node with index 6845 // start offset minus one is an hr, or the child is a br whose 6846 // previousSibling is either a br or not an inline node:" 6847 if (offset == 0 6848 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "hr") 6849 || (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "br") 6850 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1].previousSibling, "br") 6851 || !isInlineNode(startNode.childNodes[startOffset - 1].previousSibling))))) { 6852 // "Call collapse(node, offset) on the Selection." 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 && !$_(getDescendants(ancestor)).some(isProhibitedParagraphChild)); 6989 }; 6990 } 6991 6992 function makeIsElementWithoutAttributes(value) { 6993 return function (node) { 6994 return isHtmlElement_obsolete(node, value) && !node.attributes.length; 6995 }; 6996 } 6997 6998 function returnFalse() { 6999 return false; 7000 } 7001 7002 function makeCreateElement(value) { 7003 return function () { 7004 return document.createElement(value); 7005 }; 7006 } 7007 7008 // "For each node in node list, while node is the descendant of an 7009 // editable HTML element in the same editing host, whose local name is 7010 // a formattable block name, and which is not the ancestor of a 7011 // prohibited paragraph child, split the parent of the one-node list 7012 // consisting of node." 7013 for (i = 0; i < nodeList.length; i++) { 7014 var node = nodeList[i]; 7015 while ($_(getAncestors(node)).some(makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node))) { 7016 splitParent([node], newRange); 7017 } 7018 } 7019 7020 // "Restore the values from values." 7021 restoreValues(values, newRange); 7022 7023 // "While node list is not empty:" 7024 while (nodeList.length) { 7025 var sublist; 7026 7027 // "If the first member of node list is a single-line 7028 // container:" 7029 if (isSingleLineContainer(nodeList[0])) { 7030 // "Let sublist be the children of the first member of node 7031 // list." 7032 sublist = [].slice.call(toArray(nodeList[0].childNodes)); 7033 7034 // "Record the values of sublist, and let values be the 7035 // result." 7036 values = recordValues(sublist); 7037 7038 // "Remove the first member of node list from its parent, 7039 // preserving its descendants." 7040 removePreservingDescendants(nodeList[0], newRange); 7041 7042 // "Restore the values from values." 7043 restoreValues(values, newRange); 7044 7045 // "Remove the first member from node list." 7046 nodeList.shift(); 7047 7048 // "Otherwise:" 7049 } else { 7050 // "Let sublist be an empty list of nodes." 7051 sublist = []; 7052 7053 // "Remove the first member of node list and append it to 7054 // sublist." 7055 sublist.push(nodeList.shift()); 7056 7057 // "While node list is not empty, and the first member of 7058 // node list is the nextSibling of the last member of 7059 // sublist, and the first member of node list is not a 7060 // single-line container, and the last member of sublist is 7061 // not a br, remove the first member of node list and 7062 // append it to sublist." 7063 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isSingleLineContainer(nodeList[0]) && !isNamedHtmlElement(sublist[sublist.length - 1], "BR")) { 7064 sublist.push(nodeList.shift()); 7065 } 7066 } 7067 7068 // "Wrap sublist. If value is "div" or "p", sibling criteria 7069 // returns false; otherwise it returns true for an HTML element 7070 // with local name value and no attributes, and false otherwise. 7071 // New parent instructions return the result of running 7072 // createElement(value) on the context object. Then fix disallowed 7073 // ancestors of the result." 7074 fixDisallowedAncestors(wrap( 7075 sublist, 7076 jQuery.inArray(value, ["div", "p"]) == -1 ? makeIsElementWithoutAttributes(value) : returnFalse, 7077 makeCreateElement(value), 7078 newRange 7079 ), newRange); 7080 } 7081 }, 7082 indeterm: function () { 7083 // "Block-extend the active range, and let new range be the result." 7084 var newRange = blockExtend(getActiveRange()); 7085 7086 // "Let node list be all visible editable nodes that are contained in 7087 // new range and have no children." 7088 var nodeList = getAllContainedNodes(newRange, function (node) { 7089 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7090 }); 7091 7092 // "If node list is empty, return false." 7093 if (!nodeList.length) { 7094 return false; 7095 } 7096 7097 // "Let type be null." 7098 var type = null; 7099 7100 // "For each node in node list:" 7101 var i; 7102 for (i = 0; i < nodeList.length; i++) { 7103 var node = nodeList[i]; 7104 7105 // "While node's parent is editable and in the same editing host as 7106 // node, and node is not an HTML element whose local name is a 7107 // formattable block name, set node to its parent." 7108 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7109 node = node.parentNode; 7110 } 7111 7112 // "Let current type be the empty string." 7113 var currentType = ""; 7114 7115 // "If node is an editable HTML element whose local name is a 7116 // formattable block name, and node is not the ancestor of a 7117 // prohibited paragraph child, set current type to node's local 7118 // name." 7119 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7120 currentType = node.tagName; 7121 } 7122 7123 // "If type is null, set type to current type." 7124 if (type === null) { 7125 type = currentType; 7126 7127 // "Otherwise, if type does not equal current type, return true." 7128 } else if (type != currentType) { 7129 return true; 7130 } 7131 } 7132 7133 // "Return false." 7134 return false; 7135 }, 7136 value: function () { 7137 // "Block-extend the active range, and let new range be the result." 7138 var newRange = blockExtend(getActiveRange()); 7139 7140 // "Let node be the first visible editable node that is contained in 7141 // new range and has no children. If there is no such node, return the 7142 // empty string." 7143 var nodes = getAllContainedNodes(newRange, function (node) { 7144 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7145 }); 7146 if (!nodes.length) { 7147 return ""; 7148 } 7149 var node = nodes[0]; 7150 7151 // "While node's parent is editable and in the same editing host as 7152 // node, and node is not an HTML element whose local name is a 7153 // formattable block name, set node to its parent." 7154 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7155 node = node.parentNode; 7156 } 7157 7158 // "If node is an editable HTML element whose local name is a 7159 // formattable block name, and node is not the ancestor of a prohibited 7160 // paragraph child, return node's local name, converted to ASCII 7161 // lowercase." 7162 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7163 return node.tagName.toLowerCase(); 7164 } 7165 7166 // "Return the empty string." 7167 return ""; 7168 } 7169 }; 7170 7171 //@} 7172 ///// The forwardDelete command ///// 7173 //@{ 7174 commands.forwarddelete = { 7175 action: function (value, range) { 7176 // special behaviour for skipping zero-width whitespaces in IE7 7177 if (jQuery.browser.msie && jQuery.browser.version <= 7) { 7178 moveOverZWSP(range, true); 7179 } 7180 7181 // "If the active range is not collapsed, delete the contents of the 7182 // active range and abort these steps." 7183 if (!range.collapsed) { 7184 deleteContents(range); 7185 return; 7186 } 7187 7188 // "Canonicalize whitespace at (active range's start node, active 7189 // range's start offset)." 7190 canonicalizeWhitespace(range.startContainer, range.startOffset); 7191 7192 // "Let node and offset be the active range's start node and offset." 7193 var node = range.startContainer; 7194 var offset = range.startOffset; 7195 var isBr = false; 7196 var isHr = false; 7197 7198 // "Repeat the following steps:" 7199 while (true) { 7200 // check whether the next element is a br or hr 7201 // Commented out for unknown reason. 7202 //if (offset < node.childNodes.length) { 7203 // isBr = isHtmlElement_obsolete(node.childNodes[offset], "br") || false; 7204 // isHr = isHtmlElement_obsolete(node.childNodes[offset], "hr") || false; 7205 //} 7206 7207 // "If offset is the length of node and node's nextSibling is an 7208 // editable invisible node, remove node's nextSibling from its 7209 // parent." 7210 if (offset == getNodeLength(node) && isEditable(node.nextSibling) && isInvisible(node.nextSibling)) { 7211 node.parentNode.removeChild(node.nextSibling); 7212 7213 // "Otherwise, if node has a child with index offset and that child 7214 // is an editable invisible node, remove that child from node." 7215 } else if (offset < node.childNodes.length && isEditable(node.childNodes[offset]) && (isInvisible(node.childNodes[offset]) || isBr || isHr)) { 7216 node.removeChild(node.childNodes[offset]); 7217 if (isBr || isHr) { 7218 ensureContainerEditable(node); 7219 range.setStart(node, offset); 7220 range.setEnd(node, offset); 7221 return; 7222 } 7223 7224 // "Otherwise, if node has a child with index offset and that child 7225 // is a collapsed block prop, add one to offset." 7226 } else if (offset < node.childNodes.length && isCollapsedBlockProp(node.childNodes[offset])) { 7227 offset++; 7228 7229 // "Otherwise, if offset is the length of node and node is an 7230 // inline node, or if node is invisible, set offset to one plus the 7231 // index of node, then set node to its parent." 7232 } else if ((offset == getNodeLength(node) && isInlineNode(node)) || isInvisible(node)) { 7233 offset = 1 + Dom.getIndexInParent(node); 7234 node = node.parentNode; 7235 7236 // "Otherwise, if node has a child with index offset and that child 7237 // is not a block node or a br or an img, set node to that child, 7238 // then set offset to zero." 7239 } else if (offset < node.childNodes.length && !isBlockNode(node.childNodes[offset]) && !isHtmlElementInArray(node.childNodes[offset], ["br", "img"])) { 7240 node = node.childNodes[offset]; 7241 offset = 0; 7242 7243 // "Otherwise, break from this loop." 7244 } else { 7245 break; 7246 } 7247 } 7248 7249 // collapse whitespace in the node, if it is a text node 7250 canonicalizeWhitespace(range.startContainer, range.startOffset); 7251 7252 // if the next node is an aloha-table we want to delete it 7253 var delBlock = getBlockAtNextPosition(node, offset); 7254 if (delBlock) { 7255 delBlock.parentNode.removeChild(delBlock); 7256 return; 7257 } 7258 7259 var endOffset; 7260 // "If node is a Text node and offset is not node's length:" 7261 if (node.nodeType == $_.Node.TEXT_NODE && offset != getNodeLength(node)) { 7262 // "Call collapse(node, offset) on the Selection." 7263 range.setStart(node, offset); 7264 range.setEnd(node, offset); 7265 7266 // "Let end offset be offset plus one." 7267 endOffset = offset + 1; 7268 7269 // "While end offset is not node's length and the end offsetth 7270 // element of node's data has general category M when interpreted 7271 // as a Unicode code point, add one to end offset." 7272 // 7273 // TODO: Not even going to try handling anything beyond the most 7274 // basic combining marks, since I couldn't find a good list. I 7275 // special-case a few Hebrew diacritics too to test basic coverage 7276 // of non-Latin stuff. 7277 while (endOffset != node.length && /^[\u0300-\u036f\u0591-\u05bd\u05c1\u05c2]$/.test(node.data[endOffset])) { 7278 endOffset++; 7279 } 7280 7281 // "Delete the contents of the range with start (node, offset) and 7282 // end (node, end offset)." 7283 deleteContents(node, offset, node, endOffset); 7284 7285 // "Abort these steps." 7286 return; 7287 } 7288 7289 // "If node is an inline node, abort these steps." 7290 if (isInlineNode(node)) { 7291 return; 7292 } 7293 7294 // "If node has a child with index offset and that child is a br or hr 7295 // or img, call collapse(node, offset) on the Selection. Then delete 7296 // the contents of the range with start (node, offset) and end (node, 7297 // offset + 1) and abort these steps." 7298 if (offset < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset], ["br", "hr", "img"])) { 7299 range.setStart(node, offset); 7300 range.setEnd(node, offset); 7301 deleteContents(node, offset, node, offset + 1); 7302 return; 7303 } 7304 7305 // "Let end node equal node and let end offset equal offset." 7306 var endNode = node; 7307 endOffset = offset; 7308 7309 // "Repeat the following steps:" 7310 while (true) { 7311 // "If end offset is the length of end node, set end offset to one 7312 // plus the index of end node and then set end node to its parent." 7313 if (endOffset == getNodeLength(endNode)) { 7314 endOffset = 1 + Dom.getIndexInParent(endNode); 7315 endNode = endNode.parentNode; 7316 7317 // "Otherwise, if end node has a an editable invisible child with 7318 // index end offset, remove it from end node." 7319 } else if (endOffset < endNode.childNodes.length && isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7320 endNode.removeChild(endNode.childNodes[endOffset]); 7321 7322 // "Otherwise, break from this loop." 7323 } else { 7324 break; 7325 } 7326 } 7327 7328 // "If the child of end node with index end offset minus one is a 7329 // table, abort these steps." 7330 if (isNamedHtmlElement(endNode.childNodes[endOffset - 1], "table")) { 7331 return; 7332 } 7333 7334 // "If the child of end node with index end offset is a table:" 7335 if (isNamedHtmlElement(endNode.childNodes[endOffset], "table")) { 7336 // "Call collapse(end node, end offset) on the context object's 7337 // Selection." 7338 range.setStart(endNode, endOffset); 7339 7340 // "Call extend(end node, end offset + 1) on the context object's 7341 // Selection." 7342 range.setEnd(endNode, endOffset + 1); 7343 7344 // "Abort these steps." 7345 return; 7346 } 7347 7348 // "If offset is the length of node, and the child of end node with 7349 // index end offset is an hr or br:" 7350 if (offset == getNodeLength(node) && isHtmlElementInArray(endNode.childNodes[endOffset], ["br", "hr"])) { 7351 // "Call collapse(node, offset) on the Selection." 7352 range.setStart(node, offset); 7353 range.setEnd(node, offset); 7354 7355 // "Delete the contents of the range with end (end node, end 7356 // offset) and end (end node, end offset + 1)." 7357 deleteContents(endNode, endOffset, endNode, endOffset + 1); 7358 7359 // "Abort these steps." 7360 return; 7361 } 7362 7363 // "While end node has a child with index end offset:" 7364 while (endOffset < endNode.childNodes.length) { 7365 // "If end node's child with index end offset is editable and 7366 // invisible, remove it from end node." 7367 if (isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7368 endNode.removeChild(endNode.childNodes[endOffset]); 7369 7370 // "Otherwise, set end node to its child with index end offset and 7371 // set end offset to zero." 7372 } else { 7373 endNode = endNode.childNodes[endOffset]; 7374 endOffset = 0; 7375 } 7376 } 7377 7378 // "Delete the contents of the range with start (node, offset) and end 7379 // (end node, end offset)." 7380 var newRange = deleteContents(node, offset, endNode, endOffset); 7381 range.setStart(newRange.startContainer, newRange.startOffset); 7382 range.setEnd(newRange.endContainer, newRange.endOffset); 7383 } 7384 }; 7385 7386 //@} 7387 ///// The indent command ///// 7388 //@{ 7389 commands.indent = { 7390 action: function () { 7391 // "Let items be a list of all lis that are ancestor containers of the 7392 // active range's start and/or end node." 7393 // 7394 // Has to be in tree order, remember! 7395 var items = []; 7396 var node; 7397 for (node = getActiveRange().endContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7398 if (isNamedHtmlElement(node, "LI")) { 7399 items.unshift(node); 7400 } 7401 } 7402 for (node = getActiveRange().startContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7403 if (isNamedHtmlElement(node, "LI")) { 7404 items.unshift(node); 7405 } 7406 } 7407 for (node = getActiveRange().commonAncestorContainer; node; node = node.parentNode) { 7408 if (isNamedHtmlElement(node, "LI")) { 7409 items.unshift(node); 7410 } 7411 } 7412 7413 // "For each item in items, normalize sublists of item." 7414 var i; 7415 for (i = 0; i < items.length; i++) { 7416 normalizeSublists(items[i], getActiveRange()); 7417 } 7418 7419 // "Block-extend the active range, and let new range be the result." 7420 var newRange = blockExtend(getActiveRange()); 7421 7422 // "Let node list be a list of nodes, initially empty." 7423 var nodeList = []; 7424 7425 // "For each node node contained in new range, if node is editable and 7426 // is an allowed child of "div" or "ol" and if the last member of node 7427 // list (if any) is not an ancestor of node, append node to node list." 7428 nodeList = getContainedNodes(newRange, function (node) { 7429 return isEditable(node) && (isAllowedChild(node, "div") || isAllowedChild(node, "ol")); 7430 }); 7431 7432 // "If the first member of node list is an li whose parent is an ol or 7433 // ul, and its previousSibling is an li as well, normalize sublists of 7434 // its previousSibling." 7435 if (nodeList.length && isNamedHtmlElement(nodeList[0], "LI") && isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]) && isNamedHtmlElement(nodeList[0].previousSibling, "LI")) { 7436 normalizeSublists(nodeList[0].previousSibling, newRange); 7437 } 7438 7439 // "While node list is not empty:" 7440 while (nodeList.length) { 7441 // "Let sublist be a list of nodes, initially empty." 7442 var sublist = []; 7443 7444 // "Remove the first member of node list and append it to sublist." 7445 sublist.push(nodeList.shift()); 7446 7447 // "While the first member of node list is the nextSibling of the 7448 // last member of sublist, remove the first member of node list and 7449 // append it to sublist." 7450 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 7451 sublist.push(nodeList.shift()); 7452 } 7453 7454 // "Indent sublist." 7455 indentNodes(sublist, newRange); 7456 } 7457 } 7458 }; 7459 7460 //@} 7461 ///// The insertHorizontalRule command ///// 7462 //@{ 7463 commands.inserthorizontalrule = { 7464 action: function (value, range) { 7465 7466 // "While range's start offset is 0 and its start node's parent is not 7467 // null, set range's start to (parent of start node, index of start 7468 // node)." 7469 while (range.startOffset == 0 && range.startContainer.parentNode) { 7470 range.setStart(range.startContainer.parentNode, Dom.getIndexInParent(range.startContainer)); 7471 } 7472 7473 // "While range's end offset is the length of its end node, and its end 7474 // node's parent is not null, set range's end to (parent of end node, 1 7475 // + index of start node)." 7476 while (range.endOffset == getNodeLength(range.endContainer) && range.endContainer.parentNode) { 7477 range.setEnd(range.endContainer.parentNode, 1 + Dom.getIndexInParent(range.endContainer)); 7478 } 7479 7480 // "Delete the contents of range, with block merging false." 7481 deleteContents(range, { 7482 blockMerging: false 7483 }); 7484 7485 // "If the active range's start node is neither editable nor an editing 7486 // host, abort these steps." 7487 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7488 return; 7489 } 7490 7491 // "If the active range's start node is a Text node and its start 7492 // offset is zero, set the active range's start and end to (parent of 7493 // start node, index of start node)." 7494 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == 0) { 7495 getActiveRange().setStart(getActiveRange().startContainer.parentNode, Dom.getIndexInParent(getActiveRange().startContainer)); 7496 getActiveRange().collapse(true); 7497 } 7498 7499 // "If the active range's start node is a Text node and its start 7500 // offset is the length of its start node, set the active range's start 7501 // and end to (parent of start node, 1 + index of start node)." 7502 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == getNodeLength(getActiveRange().startContainer)) { 7503 getActiveRange().setStart(getActiveRange().startContainer.parentNode, 1 + Dom.getIndexInParent(getActiveRange().startContainer)); 7504 getActiveRange().collapse(true); 7505 } 7506 7507 // "Let hr be the result of calling createElement("hr") on the 7508 // context object." 7509 var hr = document.createElement("hr"); 7510 7511 // "Run insertNode(hr) on the range." 7512 range.insertNode(hr); 7513 7514 // "Fix disallowed ancestors of hr." 7515 fixDisallowedAncestors(hr, range); 7516 7517 // "Run collapse() on the Selection, with first argument equal to the 7518 // parent of hr and the second argument equal to one plus the index of 7519 // hr." 7520 // 7521 // Not everyone actually supports collapse(), so we do it manually 7522 // instead. Also, we need to modify the actual range we're given as 7523 // well, for the sake of autoimplementation.html's range-filling-in. 7524 range.setStart(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7525 range.setEnd(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7526 Aloha.getSelection().removeAllRanges(); 7527 Aloha.getSelection().addRange(range); 7528 } 7529 }; 7530 7531 //@} 7532 ///// The insertHTML command ///// 7533 //@{ 7534 commands.inserthtml = { 7535 action: function (value, range) { 7536 7537 7538 // "Delete the contents of the active range." 7539 7540 deleteContents(range); 7541 7542 // "If the active range's start node is neither editable nor an editing 7543 // host, abort these steps." 7544 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7545 return; 7546 } 7547 7548 // "Let frag be the result of calling createContextualFragment(value) 7549 // on the active range." 7550 var frag = range.createContextualFragment(value); 7551 7552 // "Let last child be the lastChild of frag." 7553 var lastChild = frag.lastChild; 7554 7555 // "If last child is null, abort these steps." 7556 if (!lastChild) { 7557 return; 7558 } 7559 7560 // "Let descendants be all descendants of frag." 7561 var descendants = getDescendants(frag); 7562 7563 // "If the active range's start node is a block node:" 7564 if (isBlockNode(range.startContainer)) { 7565 // "Let collapsed block props be all editable collapsed block prop 7566 // children of the active range's start node that have index 7567 // greater than or equal to the active range's start offset." 7568 // 7569 // "For each node in collapsed block props, remove node from its 7570 // parent." 7571 $_(range.startContainer.childNodes).filter(function (node, range) { 7572 return isEditable(node) && isCollapsedBlockProp(node) && Dom.getIndexInParent(node) >= range.startOffset; 7573 }, true).forEach(function (node) { 7574 node.parentNode.removeChild(node); 7575 }); 7576 } 7577 7578 // "Call insertNode(frag) on the active range." 7579 range.insertNode(frag); 7580 7581 // "If the active range's start node is a block node with no visible 7582 // children, call createElement("br") on the context object and append 7583 // the result as the last child of the active range's start node." 7584 if (isBlockNode(range.startContainer)) { 7585 ensureContainerEditable(range.startContainer); 7586 } 7587 7588 // "Call collapse() on the context object's Selection, with last 7589 // child's parent as the first argument and one plus its index as the 7590 // second." 7591 range.setStart(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7592 range.setEnd(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7593 7594 // "Fix disallowed ancestors of each member of descendants." 7595 var i; 7596 for (i = 0; i < descendants.length; i++) { 7597 fixDisallowedAncestors(descendants[i], range); 7598 } 7599 7600 setActiveRange(range); 7601 } 7602 }; 7603 7604 //@} 7605 ///// The insertImage command ///// 7606 //@{ 7607 commands.insertimage = { 7608 7609 action: function (value) { 7610 // "If value is the empty string, abort these steps and do nothing." 7611 if (value === "") { 7612 return; 7613 } 7614 7615 // "Let range be the active range." 7616 var range = getActiveRange(); 7617 7618 // "Delete the contents of range, with strip wrappers false." 7619 deleteContents(range, { 7620 stripWrappers: false 7621 }); 7622 7623 // "If the active range's start node is neither editable nor an editing 7624 // host, abort these steps." 7625 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7626 return; 7627 } 7628 7629 // "If range's start node is a block node whose sole child is a br, and 7630 // its start offset is 0, remove its start node's child from it." 7631 if (isBlockNode(range.startContainer) && range.startContainer.childNodes.length == 1 && isNamedHtmlElement(range.startContainer.firstChild, "br") && range.startOffset == 0) { 7632 range.startContainer.removeChild(range.startContainer.firstChild); 7633 } 7634 7635 // "Let img be the result of calling createElement("img") on the 7636 // context object." 7637 var img = document.createElement("img"); 7638 7639 // "Run setAttribute("src", value) on img." 7640 img.setAttribute("src", value); 7641 7642 // "Run insertNode(img) on the range." 7643 range.insertNode(img); 7644 7645 // "Run collapse() on the Selection, with first argument equal to the 7646 // parent of img and the second argument equal to one plus the index of 7647 // img." 7648 // 7649 // Not everyone actually supports collapse(), so we do it manually 7650 // instead. Also, we need to modify the actual range we're given as 7651 // well, for the sake of autoimplementation.html's range-filling-in. 7652 range.setStart(img.parentNode, 1 + Dom.getIndexInParent(img)); 7653 range.setEnd(img.parentNode, 1 + Dom.getIndexInParent(img)); 7654 Aloha.getSelection().removeAllRanges(); 7655 Aloha.getSelection().addRange(range); 7656 7657 // IE adds width and height attributes for some reason, so remove those 7658 // to actually do what the spec says. 7659 img.removeAttribute("width"); 7660 img.removeAttribute("height"); 7661 } 7662 }; 7663 7664 //@} 7665 ///// The insertLineBreak command ///// 7666 //@{ 7667 commands.insertlinebreak = { 7668 action: function (value, range) { 7669 // "Delete the contents of the active range, with strip wrappers false." 7670 deleteContents(range, { 7671 stripWrappers: false 7672 }); 7673 7674 // "If the active range's start node is neither editable nor an editing 7675 // host, abort these steps." 7676 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7677 return; 7678 } 7679 7680 // "If the active range's start node is an Element, and "br" is not an 7681 // allowed child of it, abort these steps." 7682 if (range.startContainer.nodeType == $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer)) { 7683 return; 7684 } 7685 7686 // "If the active range's start node is not an Element, and "br" is not 7687 // an allowed child of the active range's start node's parent, abort 7688 // these steps." 7689 if (range.startContainer.nodeType != $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer.parentNode)) { 7690 return; 7691 } 7692 7693 // "If the active range's start node is a Text node and its start 7694 // offset is zero, call collapse() on the context object's Selection, 7695 // with first argument equal to the active range's start node's parent 7696 // and second argument equal to the active range's start node's index." 7697 var newNode, newOffset; 7698 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == 0) { 7699 newNode = range.startContainer.parentNode; 7700 newOffset = Dom.getIndexInParent(range.startContainer); 7701 Aloha.getSelection().collapse(newNode, newOffset); 7702 range.setStart(newNode, newOffset); 7703 range.setEnd(newNode, newOffset); 7704 } 7705 7706 // "If the active range's start node is a Text node and its start 7707 // offset is the length of its start node, call collapse() on the 7708 // context object's Selection, with first argument equal to the active 7709 // range's start node's parent and second argument equal to one plus 7710 // the active range's start node's index." 7711 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == getNodeLength(range.startContainer)) { 7712 newNode = range.startContainer.parentNode; 7713 newOffset = 1 + Dom.getIndexInParent(range.startContainer); 7714 Aloha.getSelection().collapse(newNode, newOffset); 7715 range.setStart(newNode, newOffset); 7716 range.setEnd(newNode, newOffset); 7717 } 7718 7719 // "Let br be the result of calling createElement("br") on the context 7720 // object." 7721 var br = document.createElement("br"); 7722 7723 // "Call insertNode(br) on the active range." 7724 range.insertNode(br); 7725 7726 // "Call collapse() on the context object's Selection, with br's parent 7727 // as the first argument and one plus br's index as the second 7728 // argument." 7729 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7730 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7731 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7732 7733 // "If br is a collapsed line break, call createElement("br") on the 7734 // context object and let extra br be the result, then call 7735 // insertNode(extra br) on the active range." 7736 if (isCollapsedLineBreak(br)) { 7737 // TODO 7738 range.insertNode(createEndBreak()); 7739 7740 // Compensate for nonstandard implementations of insertNode 7741 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7742 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7743 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7744 } 7745 7746 // IE7 is adding this styles: height: auto; min-height: 0px; max-height: none; 7747 // with that there is the ugly "IE-editable-outline" 7748 if (jQuery.browser.msie && jQuery.browser.version < 8) { 7749 br.parentNode.removeAttribute("style"); 7750 } 7751 } 7752 }; 7753 7754 //@} 7755 ///// The insertOrderedList command ///// 7756 //@{ 7757 commands.insertorderedlist = { 7758 // "Toggle lists with tag name "ol"." 7759 action: function (value, range) { 7760 toggleLists("ol", range); 7761 }, 7762 // "True if the selection's list state is "mixed" or "mixed ol", false 7763 // otherwise." 7764 indeterm: function () { 7765 return (/^mixed( ol)?$/).test(getSelectionListState()); 7766 }, 7767 // "True if the selection's list state is "ol", false otherwise." 7768 state: function () { 7769 return getSelectionListState() == "ol"; 7770 } 7771 }; 7772 7773 var listRelatedElements = { 7774 "LI": true, 7775 "DT": true, 7776 "DD": true 7777 }; 7778 7779 //@} 7780 ///// The insertParagraph command ///// 7781 //@{ 7782 commands.insertparagraph = { 7783 action: function (value, range) { 7784 var i; 7785 7786 // "Delete the contents of the active range." 7787 deleteContents(range); 7788 7789 // clean lists in the editing host, this will remove any whitespace nodes around lists 7790 // because the following algorithm is not prepared to deal with them 7791 cleanLists(getEditingHostOf(range.startContainer), range); 7792 7793 // "If the active range's start node is neither editable nor an editing 7794 // host, abort these steps." 7795 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7796 return; 7797 } 7798 7799 // "Let node and offset be the active range's start node and offset." 7800 var node = range.startContainer; 7801 var offset = range.startOffset; 7802 7803 // "If node is a Text node, and offset is neither 0 nor the length of 7804 // node, call splitText(offset) on node." 7805 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0 && offset != getNodeLength(node)) { 7806 splitText(node, offset); 7807 } 7808 7809 // "If node is a Text node and offset is its length, set offset to one 7810 // plus the index of node, then set node to its parent." 7811 if (node.nodeType == $_.Node.TEXT_NODE && offset == getNodeLength(node)) { 7812 offset = 1 + Dom.getIndexInParent(node); 7813 node = node.parentNode; 7814 } 7815 7816 // "If node is a Text or Comment node, set offset to the index of node, 7817 // then set node to its parent." 7818 if (node.nodeType == $_.Node.TEXT_NODE || node.nodeType == $_.Node.COMMENT_NODE) { 7819 offset = Dom.getIndexInParent(node); 7820 node = node.parentNode; 7821 } 7822 7823 // "Call collapse(node, offset) on the context object's Selection." 7824 Aloha.getSelection().collapse(node, offset); 7825 range.setStart(node, offset); 7826 range.setEnd(node, offset); 7827 7828 // "Let container equal node." 7829 var container = node; 7830 7831 // "While container is not a single-line container, and container's 7832 // parent is editable and in the same editing host as node, set 7833 // container to its parent." 7834 while (!isSingleLineContainer(container) && isEditable(container.parentNode) && inSameEditingHost(node, container.parentNode)) { 7835 container = container.parentNode; 7836 } 7837 7838 // "If container is not editable or not in the same editing host as 7839 // node or is not a single-line container:" 7840 if (!isEditable(container) || !inSameEditingHost(container, node) || !isSingleLineContainer(container)) { 7841 // "Let tag be the default single-line container name." 7842 var tag = defaultSingleLineContainerName; 7843 7844 // "Block-extend the active range, and let new range be the 7845 // result." 7846 var newRange = blockExtend(range); 7847 7848 // "Let node list be a list of nodes, initially empty." 7849 // 7850 // "Append to node list the first node in tree order that is 7851 // contained in new range and is an allowed child of "p", if any." 7852 var nodeList = getContainedNodes(newRange, function (node) { 7853 return isAllowedChild(node, "p"); 7854 }).slice(0, 1); 7855 7856 // "If node list is empty:" 7857 if (!nodeList.length) { 7858 // "If tag is not an allowed child of the active range's start 7859 // node, abort these steps." 7860 if (!isAllowedChild(tag, range.startContainer)) { 7861 return; 7862 } 7863 7864 // "Set container to the result of calling createElement(tag) 7865 // on the context object." 7866 container = document.createElement(tag); 7867 7868 // "Call insertNode(container) on the active range." 7869 range.insertNode(container); 7870 7871 // "Call createElement("br") on the context object, and append 7872 // the result as the last child of container." 7873 // TODO not always 7874 container.appendChild(createEndBreak()); 7875 7876 // "Call collapse(container, 0) on the context object's 7877 // Selection." 7878 // TODO: remove selection from command 7879 Aloha.getSelection().collapse(container, 0); 7880 range.setStart(container, 0); 7881 range.setEnd(container, 0); 7882 7883 // "Abort these steps." 7884 return; 7885 } 7886 7887 // "While the nextSibling of the last member of node list is not 7888 // null and is an allowed child of "p", append it to node list." 7889 while (nodeList[nodeList.length - 1].nextSibling && isAllowedChild(nodeList[nodeList.length - 1].nextSibling, "p")) { 7890 nodeList.push(nodeList[nodeList.length - 1].nextSibling); 7891 } 7892 7893 // "Wrap node list, with sibling criteria returning false and new 7894 // parent instructions returning the result of calling 7895 // createElement(tag) on the context object. Set container to the 7896 // result." 7897 container = wrap( 7898 nodeList, 7899 function () { 7900 return false; 7901 }, 7902 function () { 7903 return document.createElement(tag); 7904 }, 7905 range 7906 ); 7907 } 7908 7909 // If no container has been set yet, it is not possible to insert a paragraph at this position; 7910 // the following steps are skipped in order to prevent critical errors from occurring; 7911 if (!container) { 7912 return; 7913 } 7914 7915 // "If container's local name is "address", "listing", or "pre":" 7916 7917 var oldHeight, newHeight; 7918 if (container.tagName == "ADDRESS" || container.tagName == "LISTING" || container.tagName == "PRE") { 7919 // "Let br be the result of calling createElement("br") on the 7920 // context object." 7921 var br = document.createElement("br"); 7922 7923 // remember the old height 7924 oldHeight = container.offsetHeight; 7925 7926 // "Call insertNode(br) on the active range." 7927 range.insertNode(br); 7928 7929 // determine the new height 7930 newHeight = container.offsetHeight; 7931 7932 // "Call collapse(node, offset + 1) on the context object's 7933 // Selection." 7934 Aloha.getSelection().collapse(node, offset + 1); 7935 range.setStart(node, offset + 1); 7936 range.setEnd(node, offset + 1); 7937 7938 // "If br is the last descendant of container, let br be the result 7939 // of calling createElement("br") on the context object, then call 7940 // insertNode(br) on the active range." (Fix: only do this, if the container height did not change by inserting a single <br/>) 7941 // 7942 // Work around browser bugs: some browsers select the 7943 // newly-inserted node, not per spec. 7944 if (oldHeight == newHeight && !isDescendant(nextNode(br), container)) { 7945 // TODO check 7946 range.insertNode(createEndBreak()); 7947 Aloha.getSelection().collapse(node, offset + 1); 7948 range.setEnd(node, offset + 1); 7949 } 7950 7951 // "Abort these steps." 7952 return; 7953 } 7954 7955 // "If container's local name is "li", "dt", or "dd"; and either it has 7956 // no children or it has a single child and that child is a br:" 7957 if (listRelatedElements[container.tagName] && (!container.hasChildNodes() || (container.childNodes.length == 1 && isNamedHtmlElement(container.firstChild, "br")))) { 7958 // "Split the parent of the one-node list consisting of container." 7959 splitParent([container], range); 7960 7961 // "If container has no children, call createElement("br") on the 7962 // context object and append the result as the last child of 7963 // container." 7964 // only do this, if inserting the br does NOT modify the offset height of the container 7965 // if (!container.hasChildNodes()) { 7966 // var oldHeight = container.offsetHeight, endBr = createEndBreak(); 7967 // container.appendChild(endBr); 7968 // if (container.offsetHeight !== oldHeight) { 7969 // container.removeChild(endBr); 7970 // } 7971 // } 7972 7973 // "If container is a dd or dt, and it is not an allowed child of 7974 // any of its ancestors in the same editing host, set the tag name 7975 // of container to the default single-line container name and let 7976 // container be the result." 7977 if (isHtmlElementInArray(container, ["dd", "dt"]) && $_(getAncestors(container)).every(function (ancestor) { return !inSameEditingHost(container, ancestor) || !isAllowedChild(container, ancestor); })) { 7978 container = setTagName(container, defaultSingleLineContainerName, range); 7979 } 7980 7981 // "Fix disallowed ancestors of container." 7982 fixDisallowedAncestors(container, range); 7983 7984 // fix invalid nested lists 7985 if (isNamedHtmlElement(container, 'li') && isNamedHtmlElement(container.nextSibling, "li") && isHtmlElementInArray(container.nextSibling.firstChild, ["ol", "ul"])) { 7986 // we found a li containing only a br followed by a li containing a list as first element: merge the two li's 7987 var listParent = container.nextSibling, 7988 length = container.nextSibling.childNodes.length; 7989 for (i = 0; i < length; i++) { 7990 // we always move the first child into the container 7991 container.appendChild(listParent.childNodes[0]); 7992 } 7993 listParent.parentNode.removeChild(listParent); 7994 } 7995 7996 // "Abort these steps." 7997 return; 7998 } 7999 8000 // special behaviour when pressing enter in the last empty paragraph, that is nested in a blockquote 8001 if (isNamedHtmlElement(container, "p") 8002 && isNamedHtmlElement(container.parentNode, "blockquote") 8003 && !container.nextSibling 8004 && (!container.hasChildNodes() 8005 || (container.childNodes.length === 1 8006 && isNamedHtmlElement(container.firstChild, "br")))) { 8007 jQuery(container.parentNode).after(container); 8008 return; 8009 } 8010 8011 // "Let new line range be a new range whose start is the same as 8012 // the active range's, and whose end is (container, length of 8013 // container)." 8014 var newLineRange = Aloha.createRange(); 8015 newLineRange.setStart(range.startContainer, range.startOffset); 8016 newLineRange.setEnd(container, getNodeLength(container)); 8017 8018 // "While new line range's start offset is zero and its start node is 8019 // not container, set its start to (parent of start node, index of 8020 // start node)." 8021 while (newLineRange.startOffset == 0 && newLineRange.startContainer != container) { 8022 newLineRange.setStart(newLineRange.startContainer.parentNode, Dom.getIndexInParent(newLineRange.startContainer)); 8023 } 8024 8025 // "While new line range's start offset is the length of its start node 8026 // and its start node is not container, set its start to (parent of 8027 // start node, 1 + index of start node)." 8028 while (newLineRange.startOffset == getNodeLength(newLineRange.startContainer) && newLineRange.startContainer != container) { 8029 newLineRange.setStart(newLineRange.startContainer.parentNode, 1 + Dom.getIndexInParent(newLineRange.startContainer)); 8030 } 8031 8032 // "Let end of line be true if new line range contains either nothing 8033 // or a single br, and false otherwise." 8034 var containedInNewLineRange = getContainedNodes(newLineRange); 8035 var endOfLine = !containedInNewLineRange.length || (containedInNewLineRange.length == 1 && isNamedHtmlElement(containedInNewLineRange[0], "br")); 8036 8037 // "If the local name of container is "h1", "h2", "h3", "h4", "h5", or 8038 // "h6", and end of line is true, let new container name be the default 8039 // single-line container name." 8040 var newContainerName; 8041 if (/^H[1-6]$/.test(container.tagName) && endOfLine) { 8042 newContainerName = defaultSingleLineContainerName; 8043 8044 // "Otherwise, if the local name of container is "dt" and end of line 8045 // is true, let new container name be "dd"." 8046 } else if (container.tagName == "DT" && endOfLine) { 8047 newContainerName = "dd"; 8048 8049 // "Otherwise, if the local name of container is "dd" and end of line 8050 // is true, let new container name be "dt"." 8051 } else if (container.tagName == "DD" && endOfLine) { 8052 newContainerName = "dt"; 8053 8054 // "Otherwise, let new container name be the local name of container." 8055 } else { 8056 newContainerName = container.tagName.toLowerCase(); 8057 } 8058 8059 // "Let new container be the result of calling createElement(new 8060 // container name) on the context object." 8061 var newContainer = document.createElement(newContainerName); 8062 8063 // "Copy all non empty attributes of the container to new container." 8064 copyAttributes(container, newContainer); 8065 8066 // "If new container has an id attribute, unset it." 8067 newContainer.removeAttribute("id"); 8068 8069 // "Insert new container into the parent of container immediately after 8070 // container." 8071 container.parentNode.insertBefore(newContainer, container.nextSibling); 8072 8073 // "Let contained nodes be all nodes contained in new line range." 8074 var containedNodes = getAllContainedNodes(newLineRange); 8075 8076 // "Let frag be the result of calling extractContents() on new line 8077 // range." 8078 var frag = newLineRange.extractContents(); 8079 8080 // "Unset the id attribute (if any) of each Element descendant of frag 8081 // that is not in contained nodes." 8082 var descendants = getDescendants(frag); 8083 for (i = 0; i < descendants.length; i++) { 8084 if (descendants[i].nodeType == $_.Node.ELEMENT_NODE && $_(containedNodes).indexOf(descendants[i]) == -1) { 8085 descendants[i].removeAttribute("id"); 8086 } 8087 } 8088 8089 var fragChildren = [], 8090 fragChild = frag.firstChild; 8091 if (fragChild) { 8092 do { 8093 if (!isWhitespaceNode(fragChild)) { 8094 fragChildren.push(fragChild); 8095 } 8096 } while (null != (fragChild = fragChild.nextSibling)); 8097 } 8098 8099 // 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) 8100 if (isNamedHtmlElement(newContainer, 'li') && fragChildren.length && isHtmlElementInArray(fragChildren[0], ["ul", "ol"])) { 8101 oldHeight = newContainer.offsetHeight; 8102 var endBr = createEndBreak(); 8103 newContainer.appendChild(endBr); 8104 newHeight = newContainer.offsetHeight; 8105 if (oldHeight !== newHeight) { 8106 newContainer.removeChild(endBr); 8107 } 8108 } 8109 8110 // "Call appendChild(frag) on new container." 8111 newContainer.appendChild(frag); 8112 8113 // "If container has no visible children, call createElement("br") on 8114 // the context object, and append the result as the last child of 8115 // container." 8116 ensureContainerEditable(container); 8117 8118 // "If new container has no visible children, call createElement("br") 8119 // on the context object, and append the result as the last child of 8120 // new container." 8121 ensureContainerEditable(newContainer); 8122 8123 // "Call collapse(new container, 0) on the context object's Selection." 8124 Aloha.getSelection().collapse(newContainer, 0); 8125 range.setStart(newContainer, 0); 8126 range.setEnd(newContainer, 0); 8127 } 8128 }; 8129 8130 //@} 8131 ///// The insertText command ///// 8132 //@{ 8133 commands.inserttext = { 8134 action: function (value, range) { 8135 var i; 8136 8137 // "Delete the contents of the active range, with strip wrappers 8138 // false." 8139 deleteContents(range, { 8140 stripWrappers: false 8141 }); 8142 8143 // "If the active range's start node is neither editable nor an editing 8144 // host, abort these steps." 8145 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 8146 return; 8147 } 8148 8149 // "If value's length is greater than one:" 8150 if (value.length > 1) { 8151 // "For each element el in value, take the action for the 8152 // insertText command, with value equal to el." 8153 for (i = 0; i < value.length; i++) { 8154 commands.inserttext.action(value[i], range); 8155 } 8156 8157 // "Abort these steps." 8158 return; 8159 } 8160 8161 // "If value is the empty string, abort these steps." 8162 if (value == "") { 8163 return; 8164 } 8165 8166 // "If value is a newline (U+00A0), take the action for the 8167 // insertParagraph command and abort these steps." 8168 if (value == "\n") { 8169 commands.insertparagraph.action('', range); 8170 return; 8171 } 8172 8173 // "Let node and offset be the active range's start node and offset." 8174 var node = range.startContainer; 8175 var offset = range.startOffset; 8176 8177 // "If node has a child whose index is offset − 1, and that child is a 8178 // Text node, set node to that child, then set offset to node's 8179 // length." 8180 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && node.childNodes[offset - 1].nodeType == $_.Node.TEXT_NODE) { 8181 node = node.childNodes[offset - 1]; 8182 offset = getNodeLength(node); 8183 } 8184 8185 // "If node has a child whose index is offset, and that child is a Text 8186 // node, set node to that child, then set offset to zero." 8187 if (0 <= offset && offset < node.childNodes.length && node.childNodes[offset].nodeType == $_.Node.TEXT_NODE) { 8188 node = node.childNodes[offset]; 8189 offset = 0; 8190 } 8191 8192 // "If value is a space (U+0020), and either node is an Element whose 8193 // resolved value for "white-space" is neither "pre" nor "pre-wrap" or 8194 // node is not an Element but its parent is an Element whose resolved 8195 // value for "white-space" is neither "pre" nor "pre-wrap", set value 8196 // to a non-breaking space (U+00A0)." 8197 var refElement = node.nodeType == $_.Node.ELEMENT_NODE ? node : node.parentNode; 8198 if (value == " " && refElement.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(refElement).whiteSpace, ["pre", "pre-wrap"]) == -1) { 8199 value = "\xa0"; 8200 } 8201 8202 // "Record current overrides, and let overrides be the result." 8203 var overrides = recordCurrentOverrides(range); 8204 8205 // "If node is a Text node:" 8206 if (node.nodeType == $_.Node.TEXT_NODE) { 8207 // "Call insertData(offset, value) on node." 8208 node.insertData(offset, value); 8209 8210 // "Call collapse(node, offset) on the context object's Selection." 8211 Aloha.getSelection().collapse(node, offset); 8212 range.setStart(node, offset); 8213 8214 // "Call extend(node, offset + 1) on the context object's 8215 // Selection." 8216 Aloha.getSelection().extend(node, offset + 1); 8217 range.setEnd(node, offset + 1); 8218 8219 // "Otherwise:" 8220 } else { 8221 // "If node has only one child, which is a collapsed line break, 8222 // remove its child from it." 8223 // 8224 // FIXME: IE incorrectly returns false here instead of true 8225 // sometimes? 8226 if (node.childNodes.length == 1 && isCollapsedLineBreak(node.firstChild)) { 8227 node.removeChild(node.firstChild); 8228 } 8229 8230 // "Let text be the result of calling createTextNode(value) on the 8231 // context object." 8232 var text = document.createTextNode(value); 8233 8234 // "Call insertNode(text) on the active range." 8235 range.insertNode(text); 8236 8237 // "Call collapse(text, 0) on the context object's Selection." 8238 Aloha.getSelection().collapse(text, 0); 8239 range.setStart(text, 0); 8240 8241 // "Call extend(text, 1) on the context object's Selection." 8242 Aloha.getSelection().extend(text, 1); 8243 range.setEnd(text, 1); 8244 } 8245 8246 // "Restore states and values from overrides." 8247 restoreStatesAndValues(overrides, range); 8248 8249 // "Canonicalize whitespace at the active range's start." 8250 canonicalizeWhitespace(range.startContainer, range.startOffset); 8251 8252 // "Canonicalize whitespace at the active range's end." 8253 canonicalizeWhitespace(range.endContainer, range.endOffset); 8254 8255 // "Call collapseToEnd() on the context object's Selection." 8256 Aloha.getSelection().collapseToEnd(); 8257 range.collapse(false); 8258 } 8259 }; 8260 8261 //@} 8262 ///// The insertUnorderedList command ///// 8263 //@{ 8264 commands.insertunorderedlist = { 8265 // "Toggle lists with tag name "ul"." 8266 action: function (value, range) { 8267 toggleLists("ul", range); 8268 }, 8269 // "True if the selection's list state is "mixed" or "mixed ul", false 8270 // otherwise." 8271 indeterm: function () { 8272 return (/^mixed( ul)?$/).test(getSelectionListState()); 8273 }, 8274 // "True if the selection's list state is "ul", false otherwise." 8275 state: function () { 8276 return getSelectionListState() == "ul"; 8277 } 8278 }; 8279 8280 //@} 8281 ///// The justifyCenter command ///// 8282 //@{ 8283 commands.justifycenter = { 8284 // "Justify the selection with alignment "center"." 8285 action: function (value, range) { 8286 justifySelection("center", range); 8287 }, 8288 indeterm: function () { 8289 // "Block-extend the active range. Return true if among visible 8290 // editable nodes that are contained in the result and have no 8291 // children, at least one has alignment value "center" and at least one 8292 // does not. Otherwise return false." 8293 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8294 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8295 }); 8296 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "center"; }) 8297 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "center"; }); 8298 }, 8299 state: function () { 8300 // "Block-extend the active range. Return true if there is at least one 8301 // visible editable node that is contained in the result and has no 8302 // children, and all such nodes have alignment value "center". 8303 // Otherwise return false." 8304 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8305 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8306 }); 8307 return nodes.length && $_(nodes).every(function (node) { 8308 return getAlignmentValue(node) == "center"; 8309 }); 8310 }, 8311 value: function () { 8312 // "Block-extend the active range, and return the alignment value of 8313 // the first visible editable node that is contained in the result and 8314 // has no children. If there is no such node, return "left"." 8315 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8316 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8317 }); 8318 if (nodes.length) { 8319 return getAlignmentValue(nodes[0]); 8320 } 8321 return "left"; 8322 } 8323 }; 8324 8325 //@} 8326 ///// The justifyFull command ///// 8327 //@{ 8328 commands.justifyfull = { 8329 // "Justify the selection with alignment "justify"." 8330 action: function (value, range) { 8331 justifySelection("justify", range); 8332 }, 8333 indeterm: function () { 8334 // "Block-extend the active range. Return true if among visible 8335 // editable nodes that are contained in the result and have no 8336 // children, at least one has alignment value "justify" and at least 8337 // one does not. Otherwise return false." 8338 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8339 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8340 }); 8341 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "justify"; }) 8342 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "justify"; }); 8343 }, 8344 state: function () { 8345 // "Block-extend the active range. Return true if there is at least one 8346 // visible editable node that is contained in the result and has no 8347 // children, and all such nodes have alignment value "justify". 8348 // Otherwise return false." 8349 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8350 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8351 }); 8352 return nodes.length && $_(nodes).every(function (node) { 8353 return getAlignmentValue(node) == "justify"; 8354 }); 8355 }, 8356 value: function () { 8357 // "Block-extend the active range, and return the alignment value of 8358 // the first visible editable node that is contained in the result and 8359 // has no children. If there is no such node, return "left"." 8360 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8361 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8362 }); 8363 if (nodes.length) { 8364 return getAlignmentValue(nodes[0]); 8365 } 8366 return "left"; 8367 } 8368 }; 8369 8370 //@} 8371 ///// The justifyLeft command ///// 8372 //@{ 8373 commands.justifyleft = { 8374 // "Justify the selection with alignment "left"." 8375 action: function (value, range) { 8376 justifySelection("left", range); 8377 }, 8378 indeterm: function () { 8379 // "Block-extend the active range. Return true if among visible 8380 // editable nodes that are contained in the result and have no 8381 // children, at least one has alignment value "left" and at least one 8382 // does not. Otherwise return false." 8383 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8384 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8385 }); 8386 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "left"; }) 8387 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "left"; }); 8388 }, 8389 state: function () { 8390 // "Block-extend the active range. Return true if there is at least one 8391 // visible editable node that is contained in the result and has no 8392 // children, and all such nodes have alignment value "left". Otherwise 8393 // return false." 8394 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8395 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8396 }); 8397 return nodes.length && $_(nodes).every(function (node) { 8398 return getAlignmentValue(node) == "left"; 8399 }); 8400 }, 8401 value: function () { 8402 // "Block-extend the active range, and return the alignment value of 8403 // the first visible editable node that is contained in the result and 8404 // has no children. If there is no such node, return "left"." 8405 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8406 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8407 }); 8408 if (nodes.length) { 8409 return getAlignmentValue(nodes[0]); 8410 } 8411 return "left"; 8412 } 8413 }; 8414 8415 //@} 8416 ///// The justifyRight command ///// 8417 //@{ 8418 commands.justifyright = { 8419 // "Justify the selection with alignment "right"." 8420 action: function (value, range) { 8421 justifySelection("right", range); 8422 }, 8423 indeterm: function () { 8424 // "Block-extend the active range. Return true if among visible 8425 // editable nodes that are contained in the result and have no 8426 // children, at least one has alignment value "right" and at least one 8427 // does not. Otherwise return false." 8428 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8429 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8430 }); 8431 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "right"; }) 8432 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "right"; }); 8433 }, 8434 state: function () { 8435 // "Block-extend the active range. Return true if there is at least one 8436 // visible editable node that is contained in the result and has no 8437 // children, and all such nodes have alignment value "right". 8438 // Otherwise return false." 8439 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8440 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8441 }); 8442 return nodes.length && $_(nodes).every(function (node) { 8443 return getAlignmentValue(node) == "right"; 8444 }); 8445 }, 8446 value: function () { 8447 // "Block-extend the active range, and return the alignment value of 8448 // the first visible editable node that is contained in the result and 8449 // has no children. If there is no such node, return "left"." 8450 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8451 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8452 }); 8453 if (nodes.length) { 8454 return getAlignmentValue(nodes[0]); 8455 } 8456 return "left"; 8457 } 8458 }; 8459 8460 //@} 8461 ///// The outdent command ///// 8462 //@{ 8463 commands.outdent = { 8464 action: function () { 8465 // "Let items be a list of all lis that are ancestor containers of the 8466 // range's start and/or end node." 8467 // 8468 // It's annoying to get this in tree order using functional stuff 8469 // without doing getDescendants(document), which is slow, so I do it 8470 // imperatively. 8471 var items = []; 8472 (function () { 8473 var ancestorContainer; 8474 for (ancestorContainer = getActiveRange().endContainer; 8475 ancestorContainer != getActiveRange().commonAncestorContainer; 8476 ancestorContainer = ancestorContainer.parentNode) { 8477 if (isNamedHtmlElement(ancestorContainer, "li")) { 8478 items.unshift(ancestorContainer); 8479 } 8480 } 8481 for (ancestorContainer = getActiveRange().startContainer; 8482 ancestorContainer; 8483 ancestorContainer = ancestorContainer.parentNode) { 8484 if (isNamedHtmlElement(ancestorContainer, "li")) { 8485 items.unshift(ancestorContainer); 8486 } 8487 } 8488 }()); 8489 8490 // "For each item in items, normalize sublists of item." 8491 $_(items).forEach(function (thisArg) { 8492 normalizeSublists(thisArg, getActiveRange()); 8493 }); 8494 8495 // "Block-extend the active range, and let new range be the result." 8496 var newRange = blockExtend(getActiveRange()); 8497 8498 // "Let node list be a list of nodes, initially empty." 8499 // 8500 // "For each node node contained in new range, append node to node list 8501 // if the last member of node list (if any) is not an ancestor of node; 8502 // node is editable; and either node has no editable descendants, or is 8503 // an ol or ul, or is an li whose parent is an ol or ul." 8504 var nodeList = getContainedNodes(newRange, function (node) { 8505 return isEditable(node) && (!$_(getDescendants(node)).some(isEditable) || isHtmlElementInArray(node, ["ol", "ul"]) || (isNamedHtmlElement(node, 'li') && isHtmlElementInArray(node.parentNode, ["ol", "ul"]))); 8506 }); 8507 8508 // "While node list is not empty:" 8509 while (nodeList.length) { 8510 // "While the first member of node list is an ol or ul or is not 8511 // the child of an ol or ul, outdent it and remove it from node 8512 // list." 8513 while (nodeList.length && (isHtmlElementInArray(nodeList[0], ["OL", "UL"]) || !isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]))) { 8514 outdentNode(nodeList.shift(), newRange); 8515 } 8516 8517 // "If node list is empty, break from these substeps." 8518 if (!nodeList.length) { 8519 break; 8520 } 8521 8522 // "Let sublist be a list of nodes, initially empty." 8523 var sublist = []; 8524 8525 // "Remove the first member of node list and append it to sublist." 8526 sublist.push(nodeList.shift()); 8527 8528 // "While the first member of node list is the nextSibling of the 8529 // last member of sublist, and the first member of node list is not 8530 // an ol or ul, remove the first member of node list and append it 8531 // to sublist." 8532 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElementInArray(nodeList[0], ["OL", "UL"])) { 8533 sublist.push(nodeList.shift()); 8534 } 8535 8536 // "Record the values of sublist, and let values be the result." 8537 var values = recordValues(sublist); 8538 8539 // "Split the parent of sublist, with new parent null." 8540 splitParent(sublist, newRange); 8541 8542 // "Fix disallowed ancestors of each member of sublist." 8543 $_(sublist).forEach(fixDisallowedAncestors); 8544 8545 // "Restore the values from values." 8546 restoreValues(values, newRange); 8547 } 8548 } 8549 }; 8550 8551 //@} 8552 8553 ////////////////////////////////// 8554 ///// Miscellaneous commands ///// 8555 ////////////////////////////////// 8556 8557 ///// The selectAll command ///// 8558 //@{ 8559 commands.selectall = { 8560 // Note, this ignores the whole globalRange/getActiveRange() thing and 8561 // works with actual selections. Not suitable for autoimplementation.html. 8562 action: function () { 8563 // "Let target be the body element of the context object." 8564 var target = document.body; 8565 8566 // "If target is null, let target be the context object's 8567 // documentElement." 8568 if (!target) { 8569 target = document.documentElement; 8570 } 8571 8572 // "If target is null, call getSelection() on the context object, and 8573 // call removeAllRanges() on the result." 8574 if (!target) { 8575 Aloha.getSelection().removeAllRanges(); 8576 8577 // "Otherwise, call getSelection() on the context object, and call 8578 // selectAllChildren(target) on the result." 8579 } else { 8580 Aloha.getSelection().selectAllChildren(target); 8581 } 8582 } 8583 }; 8584 8585 //@} 8586 ///// The styleWithCSS command ///// 8587 //@{ 8588 commands.stylewithcss = { 8589 action: function (value) { 8590 // "If value is an ASCII case-insensitive match for the string 8591 // "false", set the CSS styling flag to false. Otherwise, set the 8592 // CSS styling flag to true." 8593 cssStylingFlag = String(value).toLowerCase() != "false"; 8594 }, 8595 state: function () { 8596 return cssStylingFlag; 8597 } 8598 }; 8599 8600 //@} 8601 ///// The useCSS command ///// 8602 //@{ 8603 commands.usecss = { 8604 action: function (value) { 8605 // "If value is an ASCII case-insensitive match for the string "false", 8606 // set the CSS styling flag to true. Otherwise, set the CSS styling 8607 // flag to false." 8608 cssStylingFlag = String(value).toLowerCase() == "false"; 8609 } 8610 }; 8611 //@} 8612 8613 // Some final setup 8614 //@{ 8615 (function () { 8616 8617 // Opera 11.50 doesn't implement Object.keys, so I have to make an explicit 8618 // temporary, which means I need an extra closure to not leak the temporaries 8619 // into the global namespace. >:( 8620 var commandNames = []; 8621 var command; 8622 for (command in commands) { 8623 if (commands.hasOwnProperty(command)) { 8624 commandNames.push(command); 8625 } 8626 } 8627 $_(commandNames).forEach(function (command) { 8628 // "If a command does not have a relevant CSS property specified, it 8629 // defaults to null." 8630 if (null == commands[command].relevantCssProperty) { 8631 commands[command].relevantCssProperty = null; 8632 } 8633 8634 // "If a command has inline command activated values defined but 8635 // nothing else defines when it is indeterminate, it is indeterminate 8636 // if among editable Text nodes effectively contained in the active 8637 // range, there is at least one whose effective command value is one of 8638 // the given values and at least one whose effective command value is 8639 // not one of the given values." 8640 if (null != commands[command].inlineCommandActivatedValues && null == commands[command].indeterm) { 8641 commands[command].indeterm = function (range) { 8642 var values = $_(getAllEffectivelyContainedNodes(range, function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; })) 8643 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8644 8645 var matchingValues = $_(values).filter(function (value) { 8646 return $_(commands[command].inlineCommandActivatedValues).indexOf(value) != -1; 8647 }); 8648 8649 return matchingValues.length >= 1 && values.length - matchingValues.length >= 1; 8650 }; 8651 } 8652 8653 // "If a command has inline command activated values defined, its state 8654 // is true if either no editable Text node is effectively contained in 8655 // the active range, and the active range's start node's effective 8656 // command value is one of the given values; or if there is at least 8657 // one editable Text node effectively contained in the active range, 8658 // and all of them have an effective command value equal to one of the 8659 // given values." 8660 if (null != commands[command].inlineCommandActivatedValues) { 8661 commands[command].state = function (range) { 8662 var nodes = getAllEffectivelyContainedNodes(range, function (node) { 8663 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8664 }); 8665 8666 if (nodes.length == 0) { 8667 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(range.startContainer, command)) != -1; 8668 } 8669 return $_(nodes).every(function (node) { 8670 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1; 8671 }); 8672 }; 8673 } 8674 8675 // "If a command is a standard inline value command, it is 8676 // indeterminate if among editable Text nodes that are effectively 8677 // contained in the active range, there are two that have distinct 8678 // effective command values. Its value is the effective command value 8679 // of the first editable Text node that is effectively contained in the 8680 // active range, or if there is no such node, the effective command 8681 // value of the active range's start node." 8682 if (null != commands[command].standardInlineValueCommand) { 8683 commands[command].indeterm = function () { 8684 var values = $_(getAllEffectivelyContainedNodes(getActiveRange())).filter(function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; }, true) 8685 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8686 var i; 8687 for (i = 1; i < values.length; i++) { 8688 if (values[i] != values[i - 1]) { 8689 return true; 8690 } 8691 } 8692 return false; 8693 }; 8694 8695 commands[command].value = function (range) { 8696 var refNode = getAllEffectivelyContainedNodes(range, function (node) { 8697 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8698 })[0]; 8699 8700 if (typeof refNode == "undefined") { 8701 refNode = range.startContainer; 8702 } 8703 8704 return getEffectiveCommandValue(refNode, command); 8705 }; 8706 } 8707 }); 8708 }()); 8709 //@} 8710 return { 8711 commands: commands, 8712 execCommand: myExecCommand, 8713 queryCommandIndeterm: myQueryCommandIndeterm, 8714 queryCommandState: myQueryCommandState, 8715 queryCommandValue: myQueryCommandValue, 8716 queryCommandEnabled: myQueryCommandEnabled, 8717 queryCommandSupported: myQueryCommandSupported, 8718 copyAttributes: copyAttributes, 8719 createEndBreak: createEndBreak, 8720 isEndBreak: isEndBreak, 8721 ensureContainerEditable: ensureContainerEditable, 8722 isEditingHost: isEditingHost, 8723 isEditable: isEditable, 8724 getStateOverride: getStateOverride, 8725 setStateOverride: setStateOverride, 8726 resetOverrides: resetOverrides, 8727 unsetStateOverride: unsetStateOverride 8728 }; 8729 }); // end define 8730 // vim: foldmarker=@{,@} foldmethod=marker 8731