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