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 (!(Aloha.browser.msie && Aloha.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 (!(Aloha.browser.msie && Aloha.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 (Aloha.browser.msie && Aloha.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 1185 if (Aloha.browser.msie && Aloha.browser.version <= 7) { 1186 ref.contentEditable = origStyle.contentEditable; 1187 } 1188 br.style.display = origBrDisplay; 1189 1190 // https://github.com/alohaeditor/Aloha-Editor/issues/516 1191 // look like it works in msie > 7 1192 /* if (Aloha.browser.msie && Aloha.browser.version < 8) { 1193 br.removeAttribute("style"); 1194 ref.removeAttribute("style"); 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 // "A collapsed block prop is either a collapsed line break that is not an 1408 // extraneous line break, or an Element that is an inline node and whose 1409 // children are all either invisible or collapsed block props and that has at 1410 // least one child that is a collapsed block prop." 1411 function isCollapsedBlockProp(node) { 1412 var i; 1413 1414 if (isCollapsedLineBreak(node) && !isExtraneousLineBreak(node)) { 1415 return true; 1416 } 1417 1418 if (!isInlineNode(node) || node.nodeType != $_.Node.ELEMENT_NODE) { 1419 return false; 1420 } 1421 1422 var hasCollapsedBlockPropChild = false; 1423 for (i = 0; i < node.childNodes.length; i++) { 1424 if (!isInvisible(node.childNodes[i]) && !isCollapsedBlockProp(node.childNodes[i])) { 1425 return false; 1426 } 1427 if (isCollapsedBlockProp(node.childNodes[i])) { 1428 hasCollapsedBlockPropChild = true; 1429 } 1430 } 1431 1432 return hasCollapsedBlockPropChild; 1433 } 1434 1435 /** 1436 * Checks whether the given node is a visible text node. 1437 * 1438 * @param {HTMLElement} node 1439 * @return {Boolean} True if `node` is a visible text node. 1440 */ 1441 function isInvisibleTextNode(node) { 1442 if (node && node.nodeType !== $_.Node.TEXT_NODE) { 1443 return false; 1444 } 1445 var offset = 0; 1446 var data = node.data; 1447 var len = data.length; 1448 while (offset < len && data.charAt(offset) === '\u200b') { 1449 offset++; 1450 } 1451 return offset === len; 1452 } 1453 1454 /** 1455 * Complement of isInvisibleTextNode(). 1456 * 1457 * @param {HTMLElement} node 1458 * @return {Boolean} True if `node` is anything but an invisible text node. 1459 */ 1460 function isNotInvisibleTextNode(node) { 1461 return !isInvisibleTextNode(node); 1462 } 1463 1464 /** 1465 * Checks whether the given node is a otherwise empty block-level element 1466 * containing a propping <br> element. 1467 * 1468 * @param {HTMLElement} node 1469 * @return {Boolean} True if `node` is a propped up block-level element. 1470 */ 1471 function isProppedBlock(node) { 1472 if (!Html.isBlock(node)) { 1473 return false; 1474 } 1475 var child = Html.findNodeRight(node.lastChild, isVisible); 1476 return ( 1477 child 1478 && 'br' === child.nodeName.toLowerCase() 1479 && !Html.findNodeRight(child.previousSibling, isVisible) 1480 ); 1481 } 1482 1483 /** 1484 * Checks whether the given node is a empty element, or an element that 1485 * would otherwise be empty except for a propping <br>, or an element 1486 * containing only invisible text nodes. 1487 * 1488 * @param {HTMLElement} node 1489 * @return {Boolean} True if `node` can be considered empty. 1490 */ 1491 function isEmptyNode(node) { 1492 return ( 1493 !node.hasChildNodes() 1494 || isProppedBlock(node) 1495 || !Html.findNodeRight(node.lastChild, isNotInvisibleTextNode) 1496 ); 1497 } 1498 1499 /** 1500 * Check if the given node is a empty element which is the only 1501 * immediate child of a editing host. 1502 * 1503 * @param {HTMLElement} node 1504 * @return {Boolean} True if `node` can be regarded as empty and the 1505 * only immediate child of its parent editing host. 1506 */ 1507 function isEmptyOnlyChildOfEditingHost(node) { 1508 return ( 1509 node 1510 && isEmptyNode(node) 1511 && isEditingHost(node.parentNode) 1512 && !node.previousSibling 1513 && !node.nextSibling 1514 ); 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 1657 // For convenience, I allow newIndex to be -1 to mean "insert at the end". 1658 if (newIndex == -1) { 1659 newIndex = newParent.childNodes.length; 1660 } 1661 1662 // "When the user agent is to move a Node to a new location, preserving 1663 // ranges, it must remove the Node from its original parent (if any), then 1664 // insert it in the new location. In doing so, however, it must ignore the 1665 // regular range mutation rules, and instead follow these rules:" 1666 1667 // "Let node be the moved Node, old parent and old index be the old parent 1668 // (which may be null) and index, and new parent and new index be the new 1669 // parent and index." 1670 var oldParent = node.parentNode; 1671 var oldIndex = Dom.getIndexInParent(node); 1672 var i; 1673 1674 // We only even attempt to preserve the global range object and the ranges 1675 // in the selection, not every range out there (the latter is probably 1676 // impossible). 1677 var ranges = [range]; 1678 for (i = 0; i < Aloha.getSelection().rangeCount; i++) { 1679 ranges.push(Aloha.getSelection().getRangeAt(i)); 1680 } 1681 var boundaryPoints = []; 1682 $_(ranges).forEach(function (range) { 1683 boundaryPoints.push([range.startContainer, range.startOffset]); 1684 boundaryPoints.push([range.endContainer, range.endOffset]); 1685 }); 1686 1687 $_(boundaryPoints).forEach(function (boundaryPoint) { 1688 // "If a boundary point's node is the same as or a descendant of node, 1689 // leave it unchanged, so it moves to the new location." 1690 // 1691 // No modifications necessary. 1692 1693 // "If a boundary point's node is new parent and its offset is greater 1694 // than new index, add one to its offset." 1695 if (boundaryPoint[0] == newParent && boundaryPoint[1] > newIndex) { 1696 boundaryPoint[1]++; 1697 } 1698 1699 // "If a boundary point's node is old parent and its offset is old index or 1700 // old index + 1, set its node to new parent and add new index − old index 1701 // to its offset." 1702 if (boundaryPoint[0] == oldParent && (boundaryPoint[1] == oldIndex || boundaryPoint[1] == oldIndex + 1)) { 1703 boundaryPoint[0] = newParent; 1704 boundaryPoint[1] += newIndex - oldIndex; 1705 } 1706 1707 // "If a boundary point's node is old parent and its offset is greater than 1708 // old index + 1, subtract one from its offset." 1709 if (boundaryPoint[0] == oldParent && boundaryPoint[1] > oldIndex + 1) { 1710 boundaryPoint[1]--; 1711 } 1712 }); 1713 1714 // Now actually move it and preserve the ranges. 1715 if (newParent.childNodes.length == newIndex) { 1716 newParent.appendChild(node); 1717 } else { 1718 newParent.insertBefore(node, newParent.childNodes[newIndex]); 1719 } 1720 1721 // if we're off actual node boundaries this implies that the move was 1722 // part of a deletion process (backspace). If that's the case we 1723 // attempt to fix this by restoring the range to the first index of 1724 // the node that has been moved 1725 var newRange = null; 1726 if (boundaryPoints[0][1] > boundaryPoints[0][0].childNodes.length && boundaryPoints[1][1] > boundaryPoints[1][0].childNodes.length) { 1727 range.setStart(node, 0); 1728 range.setEnd(node, 0); 1729 } else { 1730 range.setStart(boundaryPoints[0][0], boundaryPoints[0][1]); 1731 range.setEnd(boundaryPoints[1][0], boundaryPoints[1][1]); 1732 1733 Aloha.getSelection().removeAllRanges(); 1734 for (i = 1; i < ranges.length; i++) { 1735 newRange = Aloha.createRange(); 1736 newRange.setStart(boundaryPoints[2 * i][0], boundaryPoints[2 * i][1]); 1737 newRange.setEnd(boundaryPoints[2 * i + 1][0], boundaryPoints[2 * i + 1][1]); 1738 Aloha.getSelection().addRange(newRange); 1739 } 1740 if (newRange) { 1741 range = newRange; 1742 } 1743 } 1744 } 1745 1746 /** 1747 * Copy all non empty attributes from an existing to a new element 1748 * 1749 * @param {dom} element The source DOM element 1750 * @param {dom} newElement The new DOM element which will get the attributes of the source DOM element 1751 * @return void 1752 */ 1753 function copyAttributes(element, newElement) { 1754 1755 // This is an IE7 workaround. We identified three places that were connected 1756 // to the mysterious ie7 crash: 1757 // 1. Add attribute to dom element (Initialization of jquery-ui sortable) 1758 // 2. Access the jquery expando attribute. Just reading the name is 1759 // sufficient to make the browser vulnerable for the crash (Press enter) 1760 // 3. On editable blur the Aloha.editables[0].getContents(); gets invoked. 1761 // This invokation somehow crashes the ie7. We assume that the access of 1762 // shared expando attribute updates internal references which are not 1763 // correclty handled during clone(); 1764 if (Aloha.browser.msie && Aloha.browser.version >= 7 && typeof element.attributes[jQuery.expando] !== 'undefined') { 1765 1766 jQuery(element).removeAttr(jQuery.expando); 1767 } 1768 1769 var attrs = element.attributes; 1770 var i; 1771 for (i = 0; i < attrs.length; i++) { 1772 var attr = attrs[i]; 1773 // attr.specified is an IE specific check to exclude attributes that were never really set. 1774 if (typeof attr.specified === "undefined" || attr.specified) { 1775 if (typeof newElement.setAttributeNS === 'function') { 1776 newElement.setAttributeNS(attr.namespaceURI, attr.name, attr.value); 1777 } else { 1778 // fixes https://github.com/alohaeditor/Aloha-Editor/issues/515 1779 newElement.setAttribute(attr.name, attr.value); 1780 } 1781 } 1782 } 1783 } 1784 1785 function setTagName(element, newName, range) { 1786 // "If element is an HTML element with local name equal to new name, return 1787 // element." 1788 if (isNamedHtmlElement(element, newName)) { 1789 return element; 1790 } 1791 1792 // "If element's parent is null, return element." 1793 if (!element.parentNode) { 1794 return element; 1795 } 1796 1797 // "Let replacement element be the result of calling createElement(new 1798 // name) on the ownerDocument of element." 1799 var replacementElement = element.ownerDocument.createElement(newName); 1800 1801 // "Insert replacement element into element's parent immediately before 1802 // element." 1803 element.parentNode.insertBefore(replacementElement, element); 1804 1805 // "Copy all attributes of element to replacement element, in order." 1806 copyAttributes(element, replacementElement); 1807 1808 // "While element has children, append the first child of element as the 1809 // last child of replacement element, preserving ranges." 1810 while (element.childNodes.length) { 1811 movePreservingRanges(element.firstChild, replacementElement, replacementElement.childNodes.length, range); 1812 } 1813 1814 // "Remove element from its parent." 1815 element.parentNode.removeChild(element); 1816 1817 // if the range still uses the old element, we modify it to the new one 1818 if (range.startContainer === element) { 1819 range.startContainer = replacementElement; 1820 } 1821 if (range.endContainer === element) { 1822 range.endContainer = replacementElement; 1823 } 1824 1825 // "Return replacement element." 1826 return replacementElement; 1827 } 1828 1829 function removeExtraneousLineBreaksBefore(node) { 1830 // "Let ref be the previousSibling of node." 1831 var ref = node.previousSibling; 1832 1833 // "If ref is null, abort these steps." 1834 if (!ref) { 1835 return; 1836 } 1837 1838 // "While ref has children, set ref to its lastChild." 1839 while (ref.hasChildNodes()) { 1840 ref = ref.lastChild; 1841 } 1842 1843 // "While ref is invisible but not an extraneous line break, and ref does 1844 // not equal node's parent, set ref to the node before it in tree order." 1845 while (isInvisible(ref) && !isExtraneousLineBreak(ref) && ref != node.parentNode) { 1846 ref = previousNode(ref); 1847 } 1848 1849 // "If ref is an editable extraneous line break, remove it from its 1850 // parent." 1851 if (isEditable(ref) && isExtraneousLineBreak(ref)) { 1852 ref.parentNode.removeChild(ref); 1853 } 1854 } 1855 1856 function removeExtraneousLineBreaksAtTheEndOf(node) { 1857 // "Let ref be node." 1858 var ref = node; 1859 1860 // "While ref has children, set ref to its lastChild." 1861 while (ref.hasChildNodes()) { 1862 ref = ref.lastChild; 1863 } 1864 1865 // "While ref is invisible but not an extraneous line break, and ref does 1866 // not equal node, set ref to the node before it in tree order." 1867 while (isInvisible(ref) && !isExtraneousLineBreak(ref) && ref != node) { 1868 ref = previousNode(ref); 1869 } 1870 1871 // "If ref is an editable extraneous line break, remove it from its 1872 // parent." 1873 if (isEditable(ref) && isExtraneousLineBreak(ref)) { 1874 ref.parentNode.removeChild(ref); 1875 } 1876 } 1877 1878 // "To remove extraneous line breaks from a node, first remove extraneous line 1879 // breaks before it, then remove extraneous line breaks at the end of it." 1880 function removeExtraneousLineBreaksFrom(node) { 1881 removeExtraneousLineBreaksBefore(node); 1882 removeExtraneousLineBreaksAtTheEndOf(node); 1883 } 1884 1885 //@} 1886 ///// Wrapping a list of nodes ///// 1887 //@{ 1888 1889 function wrap(nodeList, siblingCriteria, newParentInstructions, range) { 1890 var i; 1891 1892 // "If not provided, sibling criteria returns false and new parent 1893 // instructions returns null." 1894 if (typeof siblingCriteria == "undefined") { 1895 siblingCriteria = function () { 1896 return false; 1897 }; 1898 } 1899 if (typeof newParentInstructions == "undefined") { 1900 newParentInstructions = function () { 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 1922 if (isEditable(nodeList[0].previousSibling) && siblingCriteria(nodeList[0].previousSibling)) { 1923 newParent = nodeList[0].previousSibling; 1924 1925 // "Otherwise, if the nextSibling of the last member of node list is 1926 // editable and running sibling criteria on it returns true, let new parent 1927 // be the nextSibling of the last member of node list." 1928 } else if (isEditable(nodeList[nodeList.length - 1].nextSibling) && siblingCriteria(nodeList[nodeList.length - 1].nextSibling)) { 1929 newParent = nodeList[nodeList.length - 1].nextSibling; 1930 1931 // "Otherwise, run new parent instructions, and let new parent be the 1932 // result." 1933 } else { 1934 newParent = newParentInstructions(); 1935 } 1936 1937 // "If new parent is null, abort these steps and return null." 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 // on the ownerDocument of new parent and append the result as the last 1990 // child of new parent." 1991 if (!isInlineNode(newParent) && isInlineNode(newParent.lastChild) && isInlineNode(nodeList[0]) && !isNamedHtmlElement(newParent.lastChild, "BR")) { 1992 newParent.appendChild(newParent.ownerDocument.createElement("br")); 1993 } 1994 1995 // "For each node in node list, append node as the last child of new 1996 // parent, preserving ranges." 1997 for (i = 0; i < nodeList.length; i++) { 1998 movePreservingRanges(nodeList[i], newParent, -1, range); 1999 } 2000 2001 // "Otherwise:" 2002 } else { 2003 // "If new parent is not an inline node, but the first child of new 2004 // parent and the last member of node list are both inline nodes, and 2005 // the last member of node list is not a br, call createElement("br") 2006 // on the ownerDocument of new parent and insert the result as the 2007 // first child of new parent." 2008 if (!isInlineNode(newParent) && isInlineNode(newParent.firstChild) && isInlineNode(nodeList[nodeList.length - 1]) && !isNamedHtmlElement(nodeList[nodeList.length - 1], "BR")) { 2009 newParent.insertBefore(newParent.ownerDocument.createElement("br"), newParent.firstChild); 2010 } 2011 2012 // "For each node in node list, in reverse order, insert node as the 2013 // first child of new parent, preserving ranges." 2014 for (i = nodeList.length - 1; i >= 0; i--) { 2015 movePreservingRanges(nodeList[i], newParent, 0, range); 2016 } 2017 } 2018 2019 // "If original parent is editable and has no children, remove it from its 2020 // parent." 2021 if (isEditable(originalParent) && !originalParent.hasChildNodes()) { 2022 originalParent.parentNode.removeChild(originalParent); 2023 } 2024 2025 // "If new parent's nextSibling is editable and running sibling criteria on 2026 // it returns true:" 2027 if (isEditable(newParent.nextSibling) && siblingCriteria(newParent.nextSibling)) { 2028 // "If new parent is not an inline node, but new parent's last child 2029 // and new parent's nextSibling's first child are both inline nodes, 2030 // and new parent's last child is not a br, call createElement("br") on 2031 // the ownerDocument of new parent and append the result as the last 2032 // child of new parent." 2033 if (!isInlineNode(newParent) && isInlineNode(newParent.lastChild) && isInlineNode(newParent.nextSibling.firstChild) && !isNamedHtmlElement(newParent.lastChild, "BR")) { 2034 newParent.appendChild(newParent.ownerDocument.createElement("br")); 2035 } 2036 2037 // "While new parent's nextSibling has children, append its first child 2038 // as the last child of new parent, preserving ranges." 2039 while (newParent.nextSibling.hasChildNodes()) { 2040 movePreservingRanges(newParent.nextSibling.firstChild, newParent, -1, range); 2041 } 2042 2043 // "Remove new parent's nextSibling from its parent." 2044 newParent.parentNode.removeChild(newParent.nextSibling); 2045 } 2046 2047 // "Remove extraneous line breaks from new parent." 2048 removeExtraneousLineBreaksFrom(newParent); 2049 2050 // "Return new parent." 2051 return newParent; 2052 } 2053 2054 2055 //@} 2056 ///// Allowed children ///// 2057 //@{ 2058 2059 // "A name of an element with inline contents is "a", "abbr", "b", "bdi", 2060 // "bdo", "cite", "code", "dfn", "em", "h1", "h2", "h3", "h4", "h5", "h6", "i", 2061 // "kbd", "mark", "p", "pre", "q", "rp", "rt", "ruby", "s", "samp", "small", 2062 // "span", "strong", "sub", "sup", "u", "var", "acronym", "listing", "strike", 2063 // "xmp", "big", "blink", "font", "marquee", "nobr", or "tt"." 2064 var namesOfElementsWithInlineContentsMap = { 2065 "A": true, 2066 "ABBR": true, 2067 "B": true, 2068 "BDI": true, 2069 "BDO": true, 2070 "CITE": true, 2071 "CODE": true, 2072 "DFN": true, 2073 "EM": true, 2074 "H1": true, 2075 "H2": true, 2076 "H3": true, 2077 "H4": true, 2078 "H5": true, 2079 "H6": true, 2080 "I": true, 2081 "KBD": true, 2082 "MARK": true, 2083 "P": true, 2084 "PRE": true, 2085 "Q": true, 2086 "RP": true, 2087 "RT": true, 2088 "RUBY": true, 2089 "S": true, 2090 "SAMP": true, 2091 "SMALL": true, 2092 "SPAN": true, 2093 "STRONG": true, 2094 "SUB": true, 2095 "SUP": true, 2096 "U": true, 2097 "VAR": true, 2098 "ACRONYM": true, 2099 "LISTING": true, 2100 "STRIKE": true, 2101 "XMP": true, 2102 "BIG": true, 2103 "BLINK": true, 2104 "FONT": true, 2105 "MARQUEE": true, 2106 "NOBR": true, 2107 "TT": true 2108 }; 2109 2110 2111 var tableRelatedElements = { 2112 "colgroup": true, 2113 "table": true, 2114 "tbody": true, 2115 "tfoot": true, 2116 "thead": true, 2117 "tr": true 2118 }; 2119 2120 var scriptRelatedElements = { 2121 "script": true, 2122 "style": true, 2123 "plaintext": true, 2124 "xmp": true 2125 }; 2126 2127 var prohibitedHeadingNestingMap = jQuery.extend({ 2128 "H1": true, 2129 "H2": true, 2130 "H3": true, 2131 "H4": true, 2132 "H5": true, 2133 "H6": true 2134 }, prohibitedParagraphChildNamesMap); 2135 var prohibitedTableNestingMap = { 2136 "CAPTION": true, 2137 "COL": true, 2138 "COLGROUP": true, 2139 "TBODY": true, 2140 "TD": true, 2141 "TFOOT": true, 2142 "TH": true, 2143 "THEAD": true, 2144 "TR": true 2145 }; 2146 var prohibitedDefNestingMap = { 2147 "DD": true, 2148 "DT": true 2149 }; 2150 var prohibitedNestingCombinationsMap = { 2151 "A": jQuery.extend({ 2152 "A": true 2153 }, prohibitedParagraphChildNamesMap), 2154 "DD": prohibitedDefNestingMap, 2155 "DT": prohibitedDefNestingMap, 2156 "LI": { 2157 "LI": true 2158 }, 2159 "NOBR": jQuery.extend({ 2160 "NOBR": true 2161 }, prohibitedParagraphChildNamesMap), 2162 "H1": prohibitedHeadingNestingMap, 2163 "H2": prohibitedHeadingNestingMap, 2164 "H3": prohibitedHeadingNestingMap, 2165 "H4": prohibitedHeadingNestingMap, 2166 "H5": prohibitedHeadingNestingMap, 2167 "H6": prohibitedHeadingNestingMap, 2168 "TD": prohibitedTableNestingMap, 2169 "TH": prohibitedTableNestingMap, 2170 // this is the same as namesOfElementsWithInlineContentsMap excluding a and h1-h6 elements above 2171 "ABBR": prohibitedParagraphChildNamesMap, 2172 "B": prohibitedParagraphChildNamesMap, 2173 "BDI": prohibitedParagraphChildNamesMap, 2174 "BDO": prohibitedParagraphChildNamesMap, 2175 "CITE": prohibitedParagraphChildNamesMap, 2176 "CODE": prohibitedParagraphChildNamesMap, 2177 "DFN": prohibitedParagraphChildNamesMap, 2178 "EM": prohibitedParagraphChildNamesMap, 2179 "I": prohibitedParagraphChildNamesMap, 2180 "KBD": prohibitedParagraphChildNamesMap, 2181 "MARK": prohibitedParagraphChildNamesMap, 2182 "P": prohibitedParagraphChildNamesMap, 2183 "PRE": prohibitedParagraphChildNamesMap, 2184 "Q": prohibitedParagraphChildNamesMap, 2185 "RP": prohibitedParagraphChildNamesMap, 2186 "RT": prohibitedParagraphChildNamesMap, 2187 "RUBY": prohibitedParagraphChildNamesMap, 2188 "S": prohibitedParagraphChildNamesMap, 2189 "SAMP": prohibitedParagraphChildNamesMap, 2190 "SMALL": prohibitedParagraphChildNamesMap, 2191 "SPAN": prohibitedParagraphChildNamesMap, 2192 "STRONG": prohibitedParagraphChildNamesMap, 2193 "SUB": prohibitedParagraphChildNamesMap, 2194 "SUP": prohibitedParagraphChildNamesMap, 2195 "U": prohibitedParagraphChildNamesMap, 2196 "VAR": prohibitedParagraphChildNamesMap, 2197 "ACRONYM": prohibitedParagraphChildNamesMap, 2198 "LISTING": prohibitedParagraphChildNamesMap, 2199 "STRIKE": prohibitedParagraphChildNamesMap, 2200 "XMP": prohibitedParagraphChildNamesMap, 2201 "BIG": prohibitedParagraphChildNamesMap, 2202 "BLINK": prohibitedParagraphChildNamesMap, 2203 "FONT": prohibitedParagraphChildNamesMap, 2204 "MARQUEE": prohibitedParagraphChildNamesMap, 2205 "TT": prohibitedParagraphChildNamesMap 2206 }; 2207 2208 // "An element with inline contents is an HTML element whose local name is a 2209 // name of an element with inline contents." 2210 function isElementWithInlineContents(node) { 2211 return isMappedHtmlElement(node, namesOfElementsWithInlineContentsMap); 2212 } 2213 2214 function isAllowedChild(child, parent_) { 2215 // "If parent is "colgroup", "table", "tbody", "tfoot", "thead", "tr", or 2216 // an HTML element with local name equal to one of those, and child is a 2217 // Text node whose data does not consist solely of space characters, return 2218 // false." 2219 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)) { 2220 return false; 2221 } 2222 2223 // "If parent is "script", "style", "plaintext", or "xmp", or an HTML 2224 // element with local name equal to one of those, and child is not a Text 2225 // node, return false." 2226 if ((scriptRelatedElements[parent_] || isHtmlElementInArray(parent_, ["script", "style", "plaintext", "xmp"])) && (typeof child != "object" || child.nodeType != $_.Node.TEXT_NODE)) { 2227 return false; 2228 } 2229 2230 // "If child is a Document, DocumentFragment, or DocumentType, return 2231 // false." 2232 if (typeof child == "object" && (child.nodeType == $_.Node.DOCUMENT_NODE || child.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE || child.nodeType == $_.Node.DOCUMENT_TYPE_NODE)) { 2233 return false; 2234 } 2235 2236 // "If child is an HTML element, set child to the local name of child." 2237 if (isAnyHtmlElement(child)) { 2238 child = child.tagName.toLowerCase(); 2239 } 2240 2241 // "If child is not a string, return true." 2242 if (typeof child != "string") { 2243 return true; 2244 } 2245 2246 // "If parent is an HTML element:" 2247 if (isAnyHtmlElement(parent_)) { 2248 // "If child is "a", and parent or some ancestor of parent is an a, 2249 // return false." 2250 // 2251 // "If child is a prohibited paragraph child name and parent or some 2252 // ancestor of parent is an element with inline contents, return 2253 // false." 2254 // 2255 // "If child is "h1", "h2", "h3", "h4", "h5", or "h6", and parent or 2256 // some ancestor of parent is an HTML element with local name "h1", 2257 // "h2", "h3", "h4", "h5", or "h6", return false." 2258 var ancestor = parent_; 2259 while (ancestor) { 2260 if (child == "a" && isNamedHtmlElement(ancestor, 'a')) { 2261 return false; 2262 } 2263 if (prohibitedParagraphChildNamesMap[child.toUpperCase()] && isElementWithInlineContents(ancestor)) { 2264 return false; 2265 } 2266 if (/^h[1-6]$/.test(child) && isAnyHtmlElement(ancestor) && /^H[1-6]$/.test(ancestor.tagName)) { 2267 return false; 2268 } 2269 ancestor = ancestor.parentNode; 2270 } 2271 2272 // "Let parent be the local name of parent." 2273 parent_ = parent_.tagName.toLowerCase(); 2274 } 2275 2276 // "If parent is an Element or DocumentFragment, return true." 2277 if (typeof parent_ == "object" && (parent_.nodeType == $_.Node.ELEMENT_NODE || parent_.nodeType == $_.Node.DOCUMENT_FRAGMENT_NODE)) { 2278 return true; 2279 } 2280 2281 // "If parent is not a string, return false." 2282 if (typeof parent_ != "string") { 2283 return false; 2284 } 2285 2286 // "If parent is on the left-hand side of an entry on the following list, 2287 // then return true if child is listed on the right-hand side of that 2288 // entry, and false otherwise." 2289 switch (parent_) { 2290 case "colgroup": 2291 return child == "col"; 2292 case "table": 2293 return jQuery.inArray(child, ["caption", "col", "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1; 2294 case "tbody": 2295 case "thead": 2296 case "tfoot": 2297 return jQuery.inArray(child, ["td", "th", "tr"]) != -1; 2298 case "tr": 2299 return jQuery.inArray(child, ["td", "th"]) != -1; 2300 case "dl": 2301 return jQuery.inArray(child, ["dt", "dd"]) != -1; 2302 case "dir": 2303 case "ol": 2304 case "ul": 2305 return jQuery.inArray(child, ["dir", "li", "ol", "ul"]) != -1; 2306 case "hgroup": 2307 return (/^h[1-6]$/).test(child); 2308 } 2309 2310 // "If child is "body", "caption", "col", "colgroup", "frame", "frameset", 2311 // "head", "html", "tbody", "td", "tfoot", "th", "thead", or "tr", return 2312 // false." 2313 if (jQuery.inArray(child, ["body", "caption", "col", "colgroup", "frame", "frameset", "head", "html", "tbody", "td", "tfoot", "th", "thead", "tr"]) != -1) { 2314 return false; 2315 } 2316 2317 // "If child is "dd" or "dt" and parent is not "dl", return false." 2318 if (jQuery.inArray(child, ["dd", "dt"]) != -1 && parent_ != "dl") { 2319 return false; 2320 } 2321 2322 // "If child is "li" and parent is not "ol" or "ul", return false." 2323 if (child == "li" && parent_ != "ol" && parent_ != "ul") { 2324 return false; 2325 } 2326 2327 // "If parent is on the left-hand side of an entry on the following list 2328 // and child is listed on the right-hand side of that entry, return false." 2329 var leftSide = prohibitedNestingCombinationsMap[parent_.toUpperCase()]; 2330 if (leftSide) { 2331 var rightSide = leftSide[child.toUpperCase()]; 2332 if (rightSide) { 2333 return false; 2334 } 2335 } 2336 2337 // "Return true." 2338 return true; 2339 } 2340 2341 2342 //@} 2343 2344 ////////////////////////////////////// 2345 ///// Inline formatting commands ///// 2346 ////////////////////////////////////// 2347 2348 ///// Inline formatting command definitions ///// 2349 //@{ 2350 2351 // "A node node is effectively contained in a range range if range is not 2352 // collapsed, and at least one of the following holds:" 2353 function isEffectivelyContained(node, range) { 2354 if (range.collapsed) { 2355 return false; 2356 } 2357 2358 // "node is contained in range." 2359 if (isContained(node, range)) { 2360 return true; 2361 } 2362 2363 // "node is range's start node, it is a Text node, and its length is 2364 // different from range's start offset." 2365 if (node == range.startContainer && node.nodeType == $_.Node.TEXT_NODE && getNodeLength(node) != range.startOffset) { 2366 return true; 2367 } 2368 2369 // "node is range's end node, it is a Text node, and range's end offset is 2370 // not 0." 2371 if (node == range.endContainer && node.nodeType == $_.Node.TEXT_NODE && range.endOffset != 0) { 2372 return true; 2373 } 2374 2375 // "node has at least one child; and all its children are effectively 2376 // contained in range; and either range's start node is not a descendant of 2377 // node or is not a Text node or range's start offset is zero; and either 2378 // range's end node is not a descendant of node or is not a Text node or 2379 // range's end offset is its end node's length." 2380 if (node.hasChildNodes() && $_(node.childNodes).every(function (child) { return isEffectivelyContained(child, range); }) 2381 && (!isDescendant(range.startContainer, node) 2382 || range.startContainer.nodeType != $_.Node.TEXT_NODE 2383 || range.startOffset == 0) 2384 && (!isDescendant(range.endContainer, node) 2385 || range.endContainer.nodeType != $_.Node.TEXT_NODE 2386 || range.endOffset == getNodeLength(range.endContainer))) { 2387 return true; 2388 } 2389 2390 return false; 2391 } 2392 2393 // Like get(All)ContainedNodes(), but for effectively contained nodes. 2394 function getEffectivelyContainedNodes(range, condition) { 2395 if (typeof condition == "undefined") { 2396 condition = function () { 2397 return true; 2398 }; 2399 } 2400 var node = range.startContainer; 2401 while (isEffectivelyContained(node.parentNode, range)) { 2402 node = node.parentNode; 2403 } 2404 2405 var stop = nextNodeDescendants(range.endContainer); 2406 2407 var nodeList = []; 2408 while (isBefore(node, stop)) { 2409 if (isEffectivelyContained(node, range) && condition(node)) { 2410 nodeList.push(node); 2411 node = nextNodeDescendants(node); 2412 continue; 2413 } 2414 node = nextNode(node); 2415 } 2416 return nodeList; 2417 } 2418 2419 function getAllEffectivelyContainedNodes(range, condition) { 2420 if (typeof condition == "undefined") { 2421 condition = function () { 2422 return true; 2423 }; 2424 } 2425 var node = range.startContainer; 2426 while (isEffectivelyContained(node.parentNode, range)) { 2427 node = node.parentNode; 2428 } 2429 2430 var stop = nextNodeDescendants(range.endContainer); 2431 2432 var nodeList = []; 2433 while (isBefore(node, stop)) { 2434 if (isEffectivelyContained(node, range) && condition(node)) { 2435 nodeList.push(node); 2436 } 2437 node = nextNode(node); 2438 } 2439 return nodeList; 2440 } 2441 2442 2443 // "A modifiable element is a b, em, i, s, span, strong, sub, sup, or u element 2444 // with no attributes except possibly style; or a font element with no 2445 // attributes except possibly style, color, face, and/or size; or an a element 2446 // with no attributes except possibly style and/or href." 2447 function isModifiableElement(node) { 2448 if (!isAnyHtmlElement(node)) { 2449 return false; 2450 } 2451 2452 if (jQuery.inArray(node.tagName, ["B", "EM", "I", "S", "SPAN", "STRIKE", "STRONG", "SUB", "SUP", "U"]) != -1) { 2453 if (node.attributes.length == 0) { 2454 return true; 2455 } 2456 2457 if (node.attributes.length == 1 && hasAttribute(node, "style")) { 2458 return true; 2459 } 2460 } 2461 2462 if (node.tagName == "FONT" || node.tagName == "A") { 2463 var numAttrs = node.attributes.length; 2464 2465 if (hasAttribute(node, "style")) { 2466 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 // "It is an a, font, s, span, strike, or u element with exactly one 2562 // attribute, which is style, and the style attribute sets exactly one CSS 2563 // property (including invalid or unrecognized properties), which is 2564 // "text-decoration", which is set to "line-through" or "underline" or 2565 // "overline" or "none"." 2566 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")) { 2567 return true; 2568 } 2569 2570 return false; 2571 } 2572 2573 // "Two quantities are equivalent values for a command if either both are null, 2574 // or both are strings and they're equal and the command does not define any 2575 // equivalent values, or both are strings and the command defines equivalent 2576 // values and they match the definition." 2577 function areEquivalentValues(command, val1, val2) { 2578 if (val1 === null && val2 === null) { 2579 return true; 2580 } 2581 2582 if (typeof val1 == "string" && typeof val2 == "string" && val1 == val2 && !(commands[command].hasOwnProperty("equivalentValues"))) { 2583 return true; 2584 } 2585 2586 if (typeof val1 == "string" && typeof val2 == "string" && commands[command].hasOwnProperty("equivalentValues") && commands[command].equivalentValues(val1, val2)) { 2587 return true; 2588 } 2589 2590 return false; 2591 } 2592 2593 // "Two quantities are loosely equivalent values for a command if either they 2594 2595 // are equivalent values for the command, or if the command is the fontSize 2596 // command; one of the quantities is one of "xx-small", "small", "medium", 2597 // "large", "x-large", "xx-large", or "xxx-large"; and the other quantity is 2598 // the resolved value of "font-size" on a font element whose size attribute has 2599 // the corresponding value set ("1" through "7" respectively)." 2600 function areLooselyEquivalentValues(command, val1, val2) { 2601 if (areEquivalentValues(command, val1, val2)) { 2602 return true; 2603 } 2604 2605 if (command != "fontsize" || typeof val1 != "string" || typeof val2 != "string") { 2606 return false; 2607 } 2608 2609 // Static variables in JavaScript? 2610 var callee = areLooselyEquivalentValues; 2611 if (callee.sizeMap === undefined) { 2612 callee.sizeMap = {}; 2613 var font = document.createElement("font"); 2614 document.body.appendChild(font); 2615 $_(["xx-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]).forEach(function (keyword) { 2616 font.size = cssSizeToLegacy(keyword); 2617 callee.sizeMap[keyword] = $_.getComputedStyle(font).fontSize; 2618 }); 2619 document.body.removeChild(font); 2620 } 2621 2622 return val1 === callee.sizeMap[val2] || val2 === callee.sizeMap[val1]; 2623 } 2624 2625 //@} 2626 ///// Assorted inline formatting command algorithms ///// 2627 //@{ 2628 2629 function getEffectiveCommandValue(node, command) { 2630 // "If neither node nor its parent is an Element, return null." 2631 if (node.nodeType != $_.Node.ELEMENT_NODE && (!node.parentNode || node.parentNode.nodeType != $_.Node.ELEMENT_NODE)) { 2632 return null; 2633 } 2634 2635 // "If node is not an Element, return the effective command value of its 2636 // parent for command." 2637 if (node.nodeType != $_.Node.ELEMENT_NODE) { 2638 return getEffectiveCommandValue(node.parentNode, command); 2639 } 2640 2641 // "If command is "createLink" or "unlink":" 2642 if (command == "createlink" || command == "unlink") { 2643 // "While node is not null, and is not an a element that has an href 2644 // attribute, set node to its parent." 2645 while (node && (!isAnyHtmlElement(node) || node.tagName != "A" || !hasAttribute(node, "href"))) { 2646 node = node.parentNode; 2647 } 2648 2649 // "If node is null, return null." 2650 if (!node) { 2651 return null; 2652 } 2653 2654 // "Return the value of node's href attribute." 2655 return node.getAttribute("href"); 2656 } 2657 2658 // "If command is "backColor" or "hiliteColor":" 2659 if (command == "backcolor" || command == "hilitecolor") { 2660 // "While the resolved value of "background-color" on node is any 2661 // fully transparent value, and node's parent is an Element, set 2662 // node to its parent." 2663 // 2664 // Another lame hack to avoid flawed APIs. 2665 while (($_.getComputedStyle(node).backgroundColor == "rgba(0, 0, 0, 0)" || $_.getComputedStyle(node).backgroundColor === "" || $_.getComputedStyle(node).backgroundColor == "transparent") && node.parentNode && node.parentNode.nodeType == $_.Node.ELEMENT_NODE) { 2666 node = node.parentNode; 2667 } 2668 2669 // "If the resolved value of "background-color" on node is a fully 2670 // transparent value, return "rgb(255, 255, 255)"." 2671 if ($_.getComputedStyle(node).backgroundColor == "rgba(0, 0, 0, 0)" || $_.getComputedStyle(node).backgroundColor === "" || $_.getComputedStyle(node).backgroundColor == "transparent") { 2672 return "rgb(255, 255, 255)"; 2673 } 2674 2675 // "Otherwise, return the resolved value of "background-color" for 2676 // node." 2677 return $_.getComputedStyle(node).backgroundColor; 2678 } 2679 2680 // "If command is "subscript" or "superscript":" 2681 if (command == "subscript" || command == "superscript") { 2682 // "Let affected by subscript and affected by superscript be two 2683 // boolean variables, both initially false." 2684 var affectedBySubscript = false; 2685 var affectedBySuperscript = false; 2686 2687 // "While node is an inline node:" 2688 while (isInlineNode(node)) { 2689 var verticalAlign = $_.getComputedStyle(node).verticalAlign; 2690 2691 // "If node is a sub, set affected by subscript to true." 2692 if (isNamedHtmlElement(node, 'sub')) { 2693 affectedBySubscript = true; 2694 // "Otherwise, if node is a sup, set affected by superscript to 2695 // true." 2696 } else if (isNamedHtmlElement(node, 'sup')) { 2697 affectedBySuperscript = true; 2698 } 2699 2700 // "Set node to its parent." 2701 node = node.parentNode; 2702 } 2703 2704 // "If affected by subscript and affected by superscript are both true, 2705 // return the string "mixed"." 2706 if (affectedBySubscript && affectedBySuperscript) { 2707 return "mixed"; 2708 } 2709 2710 // "If affected by subscript is true, return "subscript"." 2711 if (affectedBySubscript) { 2712 return "subscript"; 2713 } 2714 2715 // "If affected by superscript is true, return "superscript"." 2716 if (affectedBySuperscript) { 2717 return "superscript"; 2718 } 2719 2720 // "Return null." 2721 return null; 2722 } 2723 2724 // "If command is "strikethrough", and the "text-decoration" property of 2725 // node or any of its ancestors has resolved value containing 2726 // "line-through", return "line-through". Otherwise, return null." 2727 if (command == "strikethrough") { 2728 do { 2729 if ($_.getComputedStyle(node).textDecoration.indexOf("line-through") != -1) { 2730 return "line-through"; 2731 } 2732 node = node.parentNode; 2733 } while (node && node.nodeType == $_.Node.ELEMENT_NODE); 2734 return null; 2735 } 2736 2737 // "If command is "underline", and the "text-decoration" property of node 2738 // or any of its ancestors has resolved value containing "underline", 2739 // return "underline". Otherwise, return null." 2740 if (command == "underline") { 2741 do { 2742 if ($_.getComputedStyle(node).textDecoration.indexOf("underline") != -1) { 2743 return "underline"; 2744 } 2745 node = node.parentNode; 2746 } while (node && node.nodeType == $_.Node.ELEMENT_NODE); 2747 return null; 2748 } 2749 2750 if (!commands[command].hasOwnProperty("relevantCssProperty")) { 2751 throw "Bug: no relevantCssProperty for " + command + " in getEffectiveCommandValue"; 2752 } 2753 2754 // "Return the resolved value for node of the relevant CSS property for 2755 // command." 2756 return $_.getComputedStyle(node)[commands[command].relevantCssProperty].toString(); 2757 } 2758 2759 function getSpecifiedCommandValue(element, command) { 2760 // "If command is "backColor" or "hiliteColor" and element's display 2761 // property does not have resolved value "inline", return null." 2762 if ((command == "backcolor" || command == "hilitecolor") && $_.getComputedStyle(element).display != "inline") { 2763 return null; 2764 } 2765 2766 // "If command is "createLink" or "unlink":" 2767 if (command == "createlink" || command == "unlink") { 2768 // "If element is an a element and has an href attribute, return the 2769 // value of that attribute." 2770 if (isAnyHtmlElement(element) && element.tagName == "A" && hasAttribute(element, "href")) { 2771 return element.getAttribute("href"); 2772 } 2773 2774 // "Return null." 2775 return null; 2776 } 2777 2778 // "If command is "subscript" or "superscript":" 2779 if (command == "subscript" || command == "superscript") { 2780 // "If element is a sup, return "superscript"." 2781 if (isNamedHtmlElement(element, 'sup')) { 2782 return "superscript"; 2783 } 2784 2785 // "If element is a sub, return "subscript"." 2786 if (isNamedHtmlElement(element, 'sub')) { 2787 return "subscript"; 2788 } 2789 2790 // "Return null." 2791 return null; 2792 } 2793 2794 // "If command is "strikethrough", and element has a style attribute set, 2795 // and that attribute sets "text-decoration":" 2796 if (command == "strikethrough" && element.style.textDecoration != "") { 2797 // "If element's style attribute sets "text-decoration" to a value 2798 // containing "line-through", return "line-through"." 2799 if (element.style.textDecoration.indexOf("line-through") != -1) { 2800 return "line-through"; 2801 } 2802 2803 // "Return null." 2804 return null; 2805 } 2806 2807 // "If command is "strikethrough" and element is a s or strike element, 2808 // return "line-through"." 2809 if (command == "strikethrough" && isHtmlElementInArray(element, ["S", "STRIKE"])) { 2810 return "line-through"; 2811 } 2812 2813 // "If command is "underline", and element has a style attribute set, and 2814 // that attribute sets "text-decoration":" 2815 if (command == "underline" && element.style.textDecoration != "") { 2816 // "If element's style attribute sets "text-decoration" to a value 2817 // containing "underline", return "underline"." 2818 if (element.style.textDecoration.indexOf("underline") != -1) { 2819 return "underline"; 2820 } 2821 2822 // "Return null." 2823 return null; 2824 } 2825 2826 // "If command is "underline" and element is a u element, return 2827 // "underline"." 2828 if (command == "underline" && isNamedHtmlElement(element, 'U')) { 2829 return "underline"; 2830 } 2831 2832 // "Let property be the relevant CSS property for command." 2833 var property = commands[command].relevantCssProperty; 2834 2835 // "If property is null, return null." 2836 if (property === null) { 2837 return null; 2838 } 2839 2840 // "If element has a style attribute set, and that attribute has the 2841 // effect of setting property, return the value that it sets property to." 2842 if (element.style[property] != "") { 2843 return element.style[property]; 2844 } 2845 2846 // "If element is a font element that has an attribute whose effect is 2847 // to create a presentational hint for property, return the value that the 2848 // hint sets property to. (For a size of 7, this will be the non-CSS value 2849 // "xxx-large".)" 2850 if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") { 2851 if (property == "color" && hasAttribute(element, "color")) { 2852 return element.color; 2853 } 2854 if (property == "fontFamily" && hasAttribute(element, "face")) { 2855 return element.face; 2856 } 2857 if (property == "fontSize" && hasAttribute(element, "size")) { 2858 // This is not even close to correct in general. 2859 var size = parseInt(element.size, 10); 2860 if (size < 1) { 2861 size = 1; 2862 } 2863 if (size > 7) { 2864 size = 7; 2865 } 2866 return { 2867 1: "xx-small", 2868 2: "small", 2869 3: "medium", 2870 4: "large", 2871 5: "x-large", 2872 6: "xx-large", 2873 7: "xxx-large" 2874 }[size]; 2875 } 2876 } 2877 2878 // "If element is in the following list, and property is equal to the 2879 // CSS property name listed for it, return the string listed for it." 2880 // 2881 // A list follows, whose meaning is copied here. 2882 if (property == "fontWeight" && (element.tagName == "B" || element.tagName == "STRONG")) { 2883 return "bold"; 2884 } 2885 if (property == "fontStyle" && (element.tagName == "I" || element.tagName == "EM")) { 2886 return "italic"; 2887 } 2888 2889 // "Return null." 2890 return null; 2891 } 2892 2893 function reorderModifiableDescendants(node, command, newValue, range) { 2894 // "Let candidate equal node." 2895 var candidate = node; 2896 2897 // "While candidate is a modifiable element, and candidate has exactly one 2898 // child, and that child is also a modifiable element, and candidate is not 2899 // a simple modifiable element or candidate's specified command value for 2900 // command is not equivalent to new value, set candidate to its child." 2901 while (isModifiableElement(candidate) && candidate.childNodes.length == 1 && isModifiableElement(candidate.firstChild) && (!isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue))) { 2902 candidate = candidate.firstChild; 2903 } 2904 2905 // "If candidate is node, or is not a simple modifiable element, or its 2906 // specified command value is not equivalent to new value, or its effective 2907 // command value is not loosely equivalent to new value, abort these 2908 // steps." 2909 if (candidate == node || !isSimpleModifiableElement(candidate) || !areEquivalentValues(command, getSpecifiedCommandValue(candidate, command), newValue) || !areLooselyEquivalentValues(command, getEffectiveCommandValue(candidate, command), newValue)) { 2910 return; 2911 } 2912 2913 // "While candidate has children, insert the first child of candidate into 2914 // candidate's parent immediately before candidate, preserving ranges." 2915 while (candidate.hasChildNodes()) { 2916 movePreservingRanges(candidate.firstChild, candidate.parentNode, Dom.getIndexInParent(candidate), range); 2917 } 2918 2919 // "Insert candidate into node's parent immediately after node." 2920 node.parentNode.insertBefore(candidate, node.nextSibling); 2921 2922 // "Append the node as the last child of candidate, preserving ranges." 2923 movePreservingRanges(node, candidate, -1, range); 2924 } 2925 2926 var recordValuesCommands = ["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"]; 2927 2928 function recordValues(nodeList) { 2929 // "Let values be a list of (node, command, specified command value) 2930 // triples, initially empty." 2931 var values = []; 2932 2933 // "For each node in node list, for each command in the list "subscript", 2934 // "bold", "fontName", "fontSize", "foreColor", "hiliteColor", "italic", 2935 // "strikethrough", and "underline" in that order:" 2936 2937 // Ensure we have a plain array to avoid the potential performance 2938 // overhead of a NodeList 2939 var nodes = jQuery.makeArray(nodeList); 2940 var i, j; 2941 var node; 2942 var command; 2943 var ancestor; 2944 var specifiedCommandValue; 2945 for (i = 0; i < nodes.length; i++) { 2946 node = nodes[i]; 2947 for (j = 0; j < recordValuesCommands.length; j++) { 2948 command = recordValuesCommands[j]; 2949 2950 // "Let ancestor equal node." 2951 ancestor = node; 2952 2953 // "If ancestor is not an Element, set it to its parent." 2954 if (ancestor.nodeType != 1) { 2955 ancestor = ancestor.parentNode; 2956 } 2957 2958 // "While ancestor is an Element and its specified command value 2959 // for command is null, set it to its parent." 2960 specifiedCommandValue = null; 2961 while (ancestor && ancestor.nodeType == 1 && (specifiedCommandValue = getSpecifiedCommandValue(ancestor, command)) === null) { 2962 ancestor = ancestor.parentNode; 2963 } 2964 2965 // "If ancestor is an Element, add (node, command, ancestor's 2966 // specified command value for command) to values. Otherwise add 2967 // (node, command, null) to values." 2968 values.push([node, command, specifiedCommandValue]); 2969 } 2970 } 2971 2972 // "Return values." 2973 return values; 2974 } 2975 2976 //@} 2977 ///// Clearing an element's value ///// 2978 //@{ 2979 2980 function clearValue(element, command, range) { 2981 // "If element is not editable, return the empty list." 2982 if (!isEditable(element)) { 2983 return []; 2984 } 2985 2986 // "If element's specified command value for command is null, return the 2987 // empty list." 2988 if (getSpecifiedCommandValue(element, command) === null) { 2989 return []; 2990 } 2991 2992 // "If element is a simple modifiable element:" 2993 if (isSimpleModifiableElement(element)) { 2994 // "Let children be the children of element." 2995 var children = Array.prototype.slice.call(toArray(element.childNodes)); 2996 2997 // "For each child in children, insert child into element's parent 2998 // immediately before element, preserving ranges." 2999 var i; 3000 for (i = 0; i < children.length; i++) { 3001 movePreservingRanges(children[i], element.parentNode, Dom.getIndexInParent(element), range); 3002 } 3003 3004 // "Remove element from its parent." 3005 element.parentNode.removeChild(element); 3006 3007 // "Return children." 3008 return children; 3009 } 3010 3011 // "If command is "strikethrough", and element has a style attribute that 3012 // sets "text-decoration" to some value containing "line-through", delete 3013 // "line-through" from the value." 3014 if (command == "strikethrough" && element.style.textDecoration.indexOf("line-through") != -1) { 3015 if (element.style.textDecoration == "line-through") { 3016 element.style.textDecoration = ""; 3017 } else { 3018 element.style.textDecoration = element.style.textDecoration.replace("line-through", ""); 3019 } 3020 if (element.getAttribute("style") == "") { 3021 element.removeAttribute("style"); 3022 } 3023 } 3024 3025 // "If command is "underline", and element has a style attribute that sets 3026 // "text-decoration" to some value containing "underline", delete 3027 // "underline" from the value." 3028 if (command == "underline" && element.style.textDecoration.indexOf("underline") != -1) { 3029 if (element.style.textDecoration == "underline") { 3030 element.style.textDecoration = ""; 3031 } else { 3032 element.style.textDecoration = element.style.textDecoration.replace("underline", ""); 3033 } 3034 if (element.getAttribute("style") == "") { 3035 element.removeAttribute("style"); 3036 } 3037 } 3038 3039 // "If the relevant CSS property for command is not null, unset the CSS 3040 // property property of element." 3041 if (commands[command].relevantCssProperty !== null) { 3042 element.style[commands[command].relevantCssProperty] = ''; 3043 if (element.getAttribute("style") == "") { 3044 element.removeAttribute("style"); 3045 } 3046 } 3047 3048 // "If element is a font element:" 3049 if (isHtmlNamespace(element.namespaceURI) && element.tagName == "FONT") { 3050 // "If command is "foreColor", unset element's color attribute, if set." 3051 if (command == "forecolor") { 3052 element.removeAttribute("color"); 3053 } 3054 3055 // "If command is "fontName", unset element's face attribute, if set." 3056 if (command == "fontname") { 3057 element.removeAttribute("face"); 3058 } 3059 3060 // "If command is "fontSize", unset element's size attribute, if set." 3061 if (command == "fontsize") { 3062 element.removeAttribute("size"); 3063 } 3064 } 3065 3066 // "If element is an a element and command is "createLink" or "unlink", 3067 // unset the href property of element." 3068 if (isNamedHtmlElement(element, 'A') && (command == "createlink" || command == "unlink")) { 3069 element.removeAttribute("href"); 3070 } 3071 3072 // "If element's specified command value for command is null, return the 3073 // empty list." 3074 if (getSpecifiedCommandValue(element, command) === null) { 3075 return []; 3076 } 3077 3078 // "Set the tag name of element to "span", and return the one-node list 3079 // consisting of the result." 3080 return [setTagName(element, "span", range)]; 3081 } 3082 3083 //@} 3084 ///// Forcing the value of a node ///// 3085 //@{ 3086 3087 function forceValue(node, command, newValue, range) { 3088 var children = []; 3089 var i; 3090 var specifiedValue; 3091 3092 // "If node's parent is null, abort this algorithm." 3093 if (!node.parentNode) { 3094 return; 3095 } 3096 3097 // "If new value is null, abort this algorithm." 3098 if (newValue === null) { 3099 return; 3100 } 3101 3102 // "If node is an allowed child of "span":" 3103 if (isAllowedChild(node, "span")) { 3104 // "Reorder modifiable descendants of node's previousSibling." 3105 reorderModifiableDescendants(node.previousSibling, command, newValue, range); 3106 3107 // "Reorder modifiable descendants of node's nextSibling." 3108 reorderModifiableDescendants(node.nextSibling, command, newValue, range); 3109 3110 // "Wrap the one-node list consisting of node, with sibling criteria 3111 // returning true for a simple modifiable element whose specified 3112 // command value is equivalent to new value and whose effective command 3113 // value is loosely equivalent to new value and false otherwise, and 3114 // with new parent instructions returning null." 3115 wrap( 3116 [node], 3117 function (node) { 3118 return isSimpleModifiableElement(node) && areEquivalentValues(command, getSpecifiedCommandValue(node, command), newValue) && areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue); 3119 }, 3120 function () { 3121 return null; 3122 }, 3123 range 3124 ); 3125 } 3126 3127 // "If the effective command value of command is loosely equivalent to new 3128 // value on node, abort this algorithm." 3129 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3130 return; 3131 } 3132 3133 // "If node is not an allowed child of "span":" 3134 if (!isAllowedChild(node, "span")) { 3135 // "Let children be all children of node, omitting any that are 3136 // Elements whose specified command value for command is neither null 3137 // nor equivalent to new value." 3138 for (i = 0; i < node.childNodes.length; i++) { 3139 if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) { 3140 specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command); 3141 3142 if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) { 3143 continue; 3144 } 3145 } 3146 children.push(node.childNodes[i]); 3147 } 3148 3149 // "Force the value of each Node in children, with command and new 3150 // value as in this invocation of the algorithm." 3151 for (i = 0; i < children.length; i++) { 3152 forceValue(children[i], command, newValue, range); 3153 } 3154 3155 // "Abort this algorithm." 3156 return; 3157 } 3158 3159 // "If the effective command value of command is loosely equivalent to new 3160 // value on node, abort this algorithm." 3161 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3162 return; 3163 } 3164 3165 // "Let new parent be null." 3166 var newParent = null; 3167 3168 // "If the CSS styling flag is false:" 3169 if (!cssStylingFlag) { 3170 // "If command is "bold" and new value is "bold", let new parent be the 3171 // result of calling createElement("b") on the ownerDocument of node." 3172 if (command == "bold" && (newValue == "bold" || newValue == "700")) { 3173 newParent = node.ownerDocument.createElement("b"); 3174 } 3175 3176 // "If command is "italic" and new value is "italic", let new parent be 3177 // the result of calling createElement("i") on the ownerDocument of 3178 // node." 3179 if (command == "italic" && newValue == "italic") { 3180 newParent = node.ownerDocument.createElement("i"); 3181 } 3182 3183 // "If command is "strikethrough" and new value is "line-through", let 3184 // new parent be the result of calling createElement("s") on the 3185 // ownerDocument of node." 3186 if (command == "strikethrough" && newValue == "line-through") { 3187 newParent = node.ownerDocument.createElement("s"); 3188 } 3189 3190 // "If command is "underline" and new value is "underline", let new 3191 // parent be the result of calling createElement("u") on the 3192 // ownerDocument of node." 3193 if (command == "underline" && newValue == "underline") { 3194 newParent = node.ownerDocument.createElement("u"); 3195 } 3196 3197 // "If command is "foreColor", and new value is fully opaque with red, 3198 // green, and blue components in the range 0 to 255:" 3199 if (command == "forecolor" && parseSimpleColor(newValue)) { 3200 // "Let new parent be the result of calling createElement("span") 3201 // on the ownerDocument of node." 3202 // NOTE: modified this process to create span elements with style attributes 3203 // instead of oldschool font tags with color attributes 3204 newParent = node.ownerDocument.createElement("span"); 3205 3206 // "If new value is an extended color keyword, set the color 3207 // attribute of new parent to new value." 3208 // 3209 // "Otherwise, set the color attribute of new parent to the result 3210 // of applying the rules for serializing simple color values to new 3211 // value (interpreted as a simple color)." 3212 jQuery(newParent).css('color', parseSimpleColor(newValue)); 3213 } 3214 3215 // "If command is "fontName", let new parent be the result of calling 3216 // createElement("font") on the ownerDocument of node, then set the 3217 // face attribute of new parent to new value." 3218 if (command == "fontname") { 3219 newParent = node.ownerDocument.createElement("font"); 3220 newParent.face = newValue; 3221 } 3222 } 3223 3224 // "If command is "createLink" or "unlink":" 3225 if (command == "createlink" || command == "unlink") { 3226 // "Let new parent be the result of calling createElement("a") on the 3227 // ownerDocument of node." 3228 newParent = node.ownerDocument.createElement("a"); 3229 3230 // "Set the href attribute of new parent to new value." 3231 newParent.setAttribute("href", newValue); 3232 3233 // "Let ancestor be node's parent." 3234 var ancestor = node.parentNode; 3235 3236 // "While ancestor is not null:" 3237 while (ancestor) { 3238 // "If ancestor is an a, set the tag name of ancestor to "span", 3239 // and let ancestor be the result." 3240 if (isNamedHtmlElement(ancestor, 'A')) { 3241 ancestor = setTagName(ancestor, "span", range); 3242 } 3243 3244 // "Set ancestor to its parent." 3245 ancestor = ancestor.parentNode; 3246 } 3247 } 3248 3249 // "If command is "fontSize"; and new value is one of "xx-small", "small", 3250 // "medium", "large", "x-large", "xx-large", or "xxx-large"; and either the 3251 // CSS styling flag is false, or new value is "xxx-large": let new parent 3252 // be the result of calling createElement("font") on the ownerDocument of 3253 // node, then set the size attribute of new parent to the number from the 3254 // following table based on new value: [table omitted]" 3255 if (command == "fontsize" && jQuery.inArray(newValue, ["xx-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) != -1 && (!cssStylingFlag || newValue == "xxx-large")) { 3256 newParent = node.ownerDocument.createElement("font"); 3257 newParent.size = cssSizeToLegacy(newValue); 3258 } 3259 3260 // "If command is "subscript" or "superscript" and new value is 3261 // "subscript", let new parent be the result of calling 3262 // createElement("sub") on the ownerDocument of node." 3263 if ((command == "subscript" || command == "superscript") && newValue == "subscript") { 3264 newParent = node.ownerDocument.createElement("sub"); 3265 } 3266 3267 // "If command is "subscript" or "superscript" and new value is 3268 // "superscript", let new parent be the result of calling 3269 // createElement("sup") on the ownerDocument of node." 3270 if ((command == "subscript" || command == "superscript") && newValue == "superscript") { 3271 newParent = node.ownerDocument.createElement("sup"); 3272 } 3273 3274 // "If new parent is null, let new parent be the result of calling 3275 // createElement("span") on the ownerDocument of node." 3276 if (!newParent) { 3277 newParent = node.ownerDocument.createElement("span"); 3278 } 3279 3280 // "Insert new parent in node's parent before node." 3281 node.parentNode.insertBefore(newParent, node); 3282 3283 // "If the effective command value of command for new parent is not loosely 3284 // equivalent to new value, and the relevant CSS property for command is 3285 // not null, set that CSS property of new parent to new value (if the new 3286 // value would be valid)." 3287 var property = commands[command].relevantCssProperty; 3288 if (property !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(newParent, command), newValue)) { 3289 newParent.style[property] = newValue; 3290 } 3291 3292 // "If command is "strikethrough", and new value is "line-through", and the 3293 // effective command value of "strikethrough" for new parent is not 3294 // "line-through", set the "text-decoration" property of new parent to 3295 // "line-through"." 3296 if (command == "strikethrough" && newValue == "line-through" && getEffectiveCommandValue(newParent, "strikethrough") != "line-through") { 3297 newParent.style.textDecoration = "line-through"; 3298 } 3299 3300 // "If command is "underline", and new value is "underline", and the 3301 // effective command value of "underline" for new parent is not 3302 // "underline", set the "text-decoration" property of new parent to 3303 // "underline"." 3304 if (command == "underline" && newValue == "underline" && getEffectiveCommandValue(newParent, "underline") != "underline") { 3305 newParent.style.textDecoration = "underline"; 3306 } 3307 3308 // "Append node to new parent as its last child, preserving ranges." 3309 movePreservingRanges(node, newParent, newParent.childNodes.length, range); 3310 3311 // "If node is an Element and the effective command value of command for 3312 // node is not loosely equivalent to new value:" 3313 if (node.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3314 // "Insert node into the parent of new parent before new parent, 3315 // preserving ranges." 3316 movePreservingRanges(node, newParent.parentNode, Dom.getIndexInParent(newParent), range); 3317 3318 // "Remove new parent from its parent." 3319 newParent.parentNode.removeChild(newParent); 3320 3321 // "Let children be all children of node, omitting any that are 3322 // Elements whose specified command value for command is neither null 3323 // nor equivalent to new value." 3324 children = []; 3325 for (i = 0; i < node.childNodes.length; i++) { 3326 if (node.childNodes[i].nodeType == $_.Node.ELEMENT_NODE) { 3327 specifiedValue = getSpecifiedCommandValue(node.childNodes[i], command); 3328 3329 if (specifiedValue !== null && !areEquivalentValues(command, newValue, specifiedValue)) { 3330 continue; 3331 } 3332 } 3333 children.push(node.childNodes[i]); 3334 } 3335 3336 // "Force the value of each Node in children, with command and new 3337 // value as in this invocation of the algorithm." 3338 for (i = 0; i < children.length; i++) { 3339 forceValue(children[i], command, newValue, range); 3340 } 3341 } 3342 } 3343 3344 //@} 3345 ///// Pushing down values ///// 3346 //@{ 3347 3348 function pushDownValues(node, command, newValue, range) { 3349 // "If node's parent is not an Element, abort this algorithm." 3350 if (!node.parentNode || node.parentNode.nodeType != $_.Node.ELEMENT_NODE) { 3351 return; 3352 } 3353 3354 // "If the effective command value of command is loosely equivalent to new 3355 // value on node, abort this algorithm." 3356 if (areLooselyEquivalentValues(command, getEffectiveCommandValue(node, command), newValue)) { 3357 return; 3358 } 3359 3360 // "Let current ancestor be node's parent." 3361 var currentAncestor = node.parentNode; 3362 3363 // "Let ancestor list be a list of Nodes, initially empty." 3364 var ancestorList = []; 3365 3366 // "While current ancestor is an editable Element and the effective command 3367 // value of command is not loosely equivalent to new value on it, append 3368 // current ancestor to ancestor list, then set current ancestor to its 3369 // parent." 3370 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !areLooselyEquivalentValues(command, getEffectiveCommandValue(currentAncestor, command), newValue)) { 3371 ancestorList.push(currentAncestor); 3372 currentAncestor = currentAncestor.parentNode; 3373 } 3374 3375 // "If ancestor list is empty, abort this algorithm." 3376 if (!ancestorList.length) { 3377 return; 3378 } 3379 3380 // "Let propagated value be the specified command value of command on the 3381 // last member of ancestor list." 3382 var propagatedValue = getSpecifiedCommandValue(ancestorList[ancestorList.length - 1], command); 3383 3384 // "If propagated value is null and is not equal to new value, abort this 3385 // algorithm." 3386 if (propagatedValue === null && propagatedValue != newValue) { 3387 return; 3388 } 3389 3390 // "If the effective command value for the parent of the last member of 3391 // ancestor list is not loosely equivalent to new value, and new value is 3392 // not null, abort this algorithm." 3393 if (newValue !== null && !areLooselyEquivalentValues(command, getEffectiveCommandValue(ancestorList[ancestorList.length - 1].parentNode, command), newValue)) { 3394 return; 3395 } 3396 3397 // "While ancestor list is not empty:" 3398 while (ancestorList.length) { 3399 // "Let current ancestor be the last member of ancestor list." 3400 // "Remove the last member from ancestor list." 3401 currentAncestor = ancestorList.pop(); 3402 3403 // "If the specified command value of current ancestor for command is 3404 // not null, set propagated value to that value." 3405 if (getSpecifiedCommandValue(currentAncestor, command) !== null) { 3406 propagatedValue = getSpecifiedCommandValue(currentAncestor, command); 3407 } 3408 3409 // "Let children be the children of current ancestor." 3410 var children = Array.prototype.slice.call(toArray(currentAncestor.childNodes)); 3411 3412 // "If the specified command value of current ancestor for command is 3413 // not null, clear the value of current ancestor." 3414 if (getSpecifiedCommandValue(currentAncestor, command) !== null) { 3415 clearValue(currentAncestor, command, range); 3416 } 3417 3418 // "For every child in children:" 3419 var i; 3420 for (i = 0; i < children.length; i++) { 3421 var child = children[i]; 3422 3423 // "If child is node, continue with the next child." 3424 if (child == node) { 3425 continue; 3426 } 3427 3428 // "If child is an Element whose specified command value for 3429 // command is neither null nor equivalent to propagated value, 3430 // continue with the next child." 3431 if (child.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(child, command) !== null && !areEquivalentValues(command, propagatedValue, getSpecifiedCommandValue(child, command))) { 3432 continue; 3433 } 3434 3435 // "If child is the last member of ancestor list, continue with the 3436 // next child." 3437 if (child == ancestorList[ancestorList.length - 1]) { 3438 continue; 3439 } 3440 3441 // "Force the value of child, with command as in this algorithm 3442 // and new value equal to propagated value." 3443 forceValue(child, command, propagatedValue, range); 3444 } 3445 } 3446 } 3447 3448 function restoreValues(values, range) { 3449 // "For each (node, command, value) triple in values:" 3450 $_(values).forEach(function (triple) { 3451 var node = triple[0]; 3452 var command = triple[1]; 3453 var value = triple[2]; 3454 3455 // "Let ancestor equal node." 3456 var ancestor = node; 3457 3458 // "If ancestor is not an Element, set it to its parent." 3459 if (!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) { 3460 ancestor = ancestor.parentNode; 3461 } 3462 3463 // "While ancestor is an Element and its specified command value for 3464 // command is null, set it to its parent." 3465 while (ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && getSpecifiedCommandValue(ancestor, command) === null) { 3466 ancestor = ancestor.parentNode; 3467 } 3468 3469 // "If value is null and ancestor is an Element, push down values on 3470 // node for command, with new value null." 3471 if (value === null && ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE) { 3472 pushDownValues(node, command, null, range); 3473 3474 // "Otherwise, if ancestor is an Element and its specified command 3475 // value for command is not equivalent to value, or if ancestor is not 3476 // an Element and value is not null, force the value of command to 3477 // value on node." 3478 } else if ((ancestor && ancestor.nodeType == $_.Node.ELEMENT_NODE && !areEquivalentValues(command, getSpecifiedCommandValue(ancestor, command), value)) || ((!ancestor || ancestor.nodeType != $_.Node.ELEMENT_NODE) && value !== null)) { 3479 forceValue(node, command, value, range); 3480 } 3481 }); 3482 } 3483 3484 //@} 3485 ///// Setting the selection's value ///// 3486 //@{ 3487 3488 function setSelectionValue(command, newValue, range) { 3489 3490 // Use current selected range if no range passed 3491 range = range || getActiveRange(); 3492 3493 // "If there is no editable text node effectively contained in the active 3494 // range:" 3495 if (!$_(getAllEffectivelyContainedNodes(range)).filter(function (node) { return node.nodeType == $_.Node.TEXT_NODE; }, true).some(isEditable)) { 3496 // "If command has inline command activated values, set the state 3497 // override to true if new value is among them and false if it's not." 3498 if (commands[command].hasOwnProperty("inlineCommandActivatedValues")) { 3499 setStateOverride( 3500 command, 3501 $_(commands[command].inlineCommandActivatedValues).indexOf(newValue) != -1, 3502 range 3503 ); 3504 } 3505 3506 // "If command is "subscript", unset the state override for 3507 // "superscript"." 3508 if (command == "subscript") { 3509 unsetStateOverride("superscript", range); 3510 } 3511 3512 // "If command is "superscript", unset the state override for 3513 // "subscript"." 3514 if (command == "superscript") { 3515 unsetStateOverride("subscript", range); 3516 } 3517 3518 // "If new value is null, unset the value override (if any)." 3519 if (newValue === null) { 3520 unsetValueOverride(command, range); 3521 3522 // "Otherwise, if command has a value specified, set the value override 3523 // to new value." 3524 } else if (commands[command].hasOwnProperty("value")) { 3525 setValueOverride(command, newValue, range); 3526 } 3527 3528 // "Abort these steps." 3529 return; 3530 } 3531 3532 // "If the active range's start node is an editable Text node, and its 3533 // start offset is neither zero nor its start node's length, call 3534 // splitText() on the active range's start node, with argument equal to the 3535 // active range's start offset. Then set the active range's start node to 3536 // the result, and its start offset to zero." 3537 if (isEditable(range.startContainer) && range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset != 0 && range.startOffset != getNodeLength(range.startContainer)) { 3538 // Account for browsers not following range mutation rules 3539 var newNode = splitText(range.startContainer, range.startOffset); 3540 var newActiveRange = Aloha.createRange(); 3541 if (range.startContainer == range.endContainer) { 3542 var newEndOffset = range.endOffset - range.startOffset; 3543 newActiveRange.setEnd(newNode, newEndOffset); 3544 range.setEnd(newNode, newEndOffset); 3545 } 3546 newActiveRange.setStart(newNode, 0); 3547 Aloha.getSelection().removeAllRanges(); 3548 Aloha.getSelection().addRange(newActiveRange); 3549 3550 range.setStart(newNode, 0); 3551 } 3552 3553 // "If the active range's end node is an editable Text node, and its end 3554 // offset is neither zero nor its end node's length, call splitText() on 3555 // the active range's end node, with argument equal to the active range's 3556 // end offset." 3557 if (isEditable(range.endContainer) && range.endContainer.nodeType == $_.Node.TEXT_NODE && range.endOffset != 0 && range.endOffset != getNodeLength(range.endContainer)) { 3558 // IE seems to mutate the range incorrectly here, so we need correction 3559 // here as well. The active range will be temporarily in orphaned 3560 // nodes, so calling getActiveRange() after splitText() but before 3561 // fixing the range will throw an exception. 3562 // TODO: check if this is still neccessary 3563 var activeRange = range; 3564 var newStart = [activeRange.startContainer, activeRange.startOffset]; 3565 var newEnd = [activeRange.endContainer, activeRange.endOffset]; 3566 splitText(activeRange.endContainer, activeRange.endOffset); 3567 activeRange.setStart(newStart[0], newStart[1]); 3568 activeRange.setEnd(newEnd[0], newEnd[1]); 3569 3570 Aloha.getSelection().removeAllRanges(); 3571 Aloha.getSelection().addRange(activeRange); 3572 } 3573 3574 // "Let element list be all editable Elements effectively contained in the 3575 // active range. 3576 // 3577 // "For each element in element list, clear the value of element." 3578 $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 3579 return isEditable(node) && node.nodeType == $_.Node.ELEMENT_NODE; 3580 })).forEach(function (element) { 3581 clearValue(element, command, range); 3582 }); 3583 3584 // "Let node list be all editable nodes effectively contained in the active 3585 // range. 3586 // 3587 // "For each node in node list:" 3588 $_(getAllEffectivelyContainedNodes(range, isEditable)).forEach(function (node) { 3589 // "Push down values on node." 3590 pushDownValues(node, command, newValue, range); 3591 3592 // "Force the value of node." 3593 forceValue(node, command, newValue, range); 3594 }); 3595 3596 } 3597 3598 /** 3599 * attempt to retrieve a block like a table or an Aloha Block 3600 * which is located one step right of the current caret position. 3601 * If an appropriate element is found it will be returned or 3602 * false otherwise 3603 * 3604 * @param {element} node current node we're in 3605 * @param {number} offset current offset within that node 3606 * 3607 * @return the dom node if found or false if no appropriate 3608 * element was found 3609 */ 3610 function getBlockAtNextPosition(node, offset) { 3611 var i; 3612 3613 // if we're inside a text node we first have to check 3614 // if there is nothing but tabs, newlines or the like 3615 // after our current cursor position 3616 if (node.nodeType === $_.Node.TEXT_NODE && offset < node.length) { 3617 for (i = offset; i < node.length; i++) { 3618 if ((node.data.charAt(i) !== '\t' && node.data.charAt(i) !== '\r' && node.data.charAt(i) !== '\n') || node.data.charCodeAt(i) === 160) { // 3619 // this is a character that has to be deleted first 3620 return false; 3621 } 3622 } 3623 } 3624 3625 // try the most simple approach first: the next sibling 3626 // is a table 3627 if (node.nextSibling && node.nextSibling.className && node.nextSibling.className.indexOf("aloha-table-wrapper") >= 0) { 3628 return node.nextSibling; 3629 } 3630 3631 // since we got only ignorable whitespace here determine if 3632 // our nodes parents next sibling is a table 3633 if (node.parentNode && node.parentNode.nextSibling && node.parentNode.nextSibling.className && node.parentNode.nextSibling.className.indexOf("aloha-table-wrapper") >= 0) { 3634 return node.parentNode.nextSibling; 3635 } 3636 3637 // our parents nextsibling is a pure whitespace node such as 3638 // generated by sourcecode indentation so we'll check for 3639 // the next next sibling 3640 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) { 3641 return node.parentNode.nextSibling.nextSibling; 3642 } 3643 3644 // Note: the search above works for tables, since they cannot be 3645 // nested deeply in paragraphs and other formatting tags. If this code 3646 // is extended to work also for other blocks, the search probably needs to be adapted 3647 } 3648 3649 /** 3650 * Attempt to retrieve a block like a table or an Aloha Block 3651 * which is located right before the current position. 3652 * If an appropriate element is found, it will be returned or 3653 * false otherwise 3654 * 3655 * @param {element} node current node 3656 * @param {offset} offset current offset 3657 * 3658 * @return dom node of found or false if no appropriate 3659 * element was found 3660 */ 3661 function getBlockAtPreviousPosition(node, offset) { 3662 var i; 3663 3664 if (node.nodeType === $_.Node.TEXT_NODE && offset > 0) { 3665 for (i = offset - 1; i >= 0; i--) { 3666 if ((node.data.charAt(i) !== '\t' && node.data.charAt(i) !== '\r' && node.data.charAt(i) !== '\n') || node.data.charCodeAt(i) === 160) { // 3667 // this is a character that has to be deleted first 3668 return false; 3669 } 3670 } 3671 } 3672 3673 // try the previous sibling 3674 if (node.previousSibling && node.previousSibling.className && node.previousSibling.className.indexOf("aloha-table-wrapper") >= 0) { 3675 return node.previousSibling; 3676 } 3677 3678 // try the parent's previous sibling 3679 if (node.parentNode && node.parentNode.previousSibling && node.parentNode.previousSibling.className && node.parentNode.previousSibling.className.indexOf("aloha-table-wrapper") >= 0) { 3680 return node.parentNode.previousSibling; 3681 } 3682 3683 // the parent's previous sibling might be a whitespace node 3684 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) { 3685 return node.parentNode.previousSibling.previousSibling; 3686 } 3687 3688 // Note: the search above works for tables, since they cannot be 3689 // nested deeply in paragraphs and other formatting tags. If this code 3690 // is extended to work also for other blocks, the search probably needs to be adapted 3691 3692 return false; 3693 } 3694 3695 // "A boundary point (node, offset) is a block start point if either node's 3696 // parent is null and offset is zero; or node has a child with index offset − 3697 // 1, and that child is either a visible block node or a visible br." 3698 function isBlockStartPoint(node, offset) { 3699 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"))); 3700 } 3701 3702 // "A boundary point (node, offset) is a block end point if either node's 3703 // parent is null and offset is node's length; or node has a child with index 3704 // offset, and that child is a visible block node." 3705 function isBlockEndPoint(node, offset) { 3706 return (!node.parentNode && offset == getNodeLength(node)) || (offset < node.childNodes.length && isVisible(node.childNodes[offset]) && isBlockNode(node.childNodes[offset])); 3707 3708 } 3709 3710 // "A boundary point is a block boundary point if it is either a block start 3711 // point or a block end point." 3712 function isBlockBoundaryPoint(node, offset) { 3713 return isBlockStartPoint(node, offset) || isBlockEndPoint(node, offset); 3714 } 3715 3716 function followsLineBreak(node) { 3717 // "Let offset be zero." 3718 var offset = 0; 3719 3720 // "While (node, offset) is not a block boundary point:" 3721 while (!isBlockBoundaryPoint(node, offset)) { 3722 // "If node has a visible child with index offset minus one, return 3723 // false." 3724 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isVisible(node.childNodes[offset - 1])) { 3725 return false; 3726 } 3727 3728 // "If offset is zero or node has no children, set offset to node's 3729 // index, then set node to its parent." 3730 if (offset == 0 || !node.hasChildNodes()) { 3731 offset = Dom.getIndexInParent(node); 3732 node = node.parentNode; 3733 3734 // "Otherwise, set node to its child with index offset minus one, then 3735 // set offset to node's length." 3736 } else { 3737 node = node.childNodes[offset - 1]; 3738 offset = getNodeLength(node); 3739 } 3740 } 3741 3742 // "Return true." 3743 return true; 3744 } 3745 3746 function precedesLineBreak(node) { 3747 // "Let offset be node's length." 3748 var offset = getNodeLength(node); 3749 3750 // "While (node, offset) is not a block boundary point:" 3751 while (!isBlockBoundaryPoint(node, offset)) { 3752 // "If node has a visible child with index offset, return false." 3753 if (offset < node.childNodes.length && isVisible(node.childNodes[offset])) { 3754 return false; 3755 } 3756 3757 // "If offset is node's length or node has no children, set offset to 3758 // one plus node's index, then set node to its parent." 3759 if (offset == getNodeLength(node) || !node.hasChildNodes()) { 3760 offset = 1 + Dom.getIndexInParent(node); 3761 node = node.parentNode; 3762 3763 // "Otherwise, set node to its child with index offset and set offset 3764 // to zero." 3765 } else { 3766 node = node.childNodes[offset]; 3767 offset = 0; 3768 } 3769 } 3770 3771 // "Return true." 3772 return true; 3773 } 3774 3775 //@} 3776 ///// Splitting a node list's parent ///// 3777 //@{ 3778 3779 function splitParent(nodeList, range) { 3780 var i; 3781 3782 // "Let original parent be the parent of the first member of node list." 3783 var originalParent = nodeList[0].parentNode; 3784 3785 // "If original parent is not editable or its parent is null, do nothing 3786 // and abort these steps." 3787 if (!isEditable(originalParent) || !originalParent.parentNode) { 3788 return; 3789 } 3790 3791 // "If the first child of original parent is in node list, remove 3792 // extraneous line breaks before original parent." 3793 if (jQuery.inArray(originalParent.firstChild, nodeList) != -1) { 3794 removeExtraneousLineBreaksBefore(originalParent); 3795 } 3796 3797 var firstChildInNodeList = jQuery.inArray(originalParent.firstChild, nodeList) != -1; 3798 var lastChildInNodeList = jQuery.inArray(originalParent.lastChild, nodeList) != -1; 3799 3800 // "If the first child of original parent is in node list, and original 3801 // parent follows a line break, set follows line break to true. Otherwise, 3802 // set follows line break to false." 3803 var followsLineBreak_ = firstChildInNodeList && followsLineBreak(originalParent); 3804 3805 // "If the last child of original parent is in node list, and original 3806 // parent precedes a line break, set precedes line break to true. 3807 // Otherwise, set precedes line break to false." 3808 var precedesLineBreak_ = lastChildInNodeList && precedesLineBreak(originalParent); 3809 3810 // "If the first child of original parent is not in node list, but its last 3811 // child is:" 3812 if (!firstChildInNodeList && lastChildInNodeList) { 3813 // "For each node in node list, in reverse order, insert node into the 3814 // parent of original parent immediately after original parent, 3815 // preserving ranges." 3816 for (i = nodeList.length - 1; i >= 0; i--) { 3817 movePreservingRanges(nodeList[i], originalParent.parentNode, 1 + Dom.getIndexInParent(originalParent), range); 3818 } 3819 3820 // "If precedes line break is true, and the last member of node list 3821 // does not precede a line break, call createElement("br") on the 3822 // context object and insert the result immediately after the last 3823 // member of node list." 3824 if (precedesLineBreak_ && !precedesLineBreak(nodeList[nodeList.length - 1])) { 3825 nodeList[nodeList.length - 1].parentNode.insertBefore(document.createElement("br"), nodeList[nodeList.length - 1].nextSibling); 3826 } 3827 3828 // "Remove extraneous line breaks at the end of original parent." 3829 removeExtraneousLineBreaksAtTheEndOf(originalParent); 3830 3831 // "Abort these steps." 3832 return; 3833 } 3834 3835 // "If the first child of original parent is not in node list:" 3836 if (!firstChildInNodeList) { 3837 // "Let cloned parent be the result of calling cloneNode(false) on 3838 // original parent." 3839 var clonedParent = originalParent.cloneNode(false); 3840 3841 // "If original parent has an id attribute, unset it." 3842 3843 originalParent.removeAttribute("id"); 3844 3845 // "Insert cloned parent into the parent of original parent immediately 3846 // before original parent." 3847 originalParent.parentNode.insertBefore(clonedParent, originalParent); 3848 3849 // "While the previousSibling of the first member of node list is not 3850 // null, append the first child of original parent as the last child of 3851 // cloned parent, preserving ranges." 3852 while (nodeList[0].previousSibling) { 3853 movePreservingRanges(originalParent.firstChild, clonedParent, clonedParent.childNodes.length, range); 3854 } 3855 } 3856 3857 // "For each node in node list, insert node into the parent of original 3858 // parent immediately before original parent, preserving ranges." 3859 for (i = 0; i < nodeList.length; i++) { 3860 movePreservingRanges(nodeList[i], originalParent.parentNode, Dom.getIndexInParent(originalParent), range); 3861 } 3862 3863 // "If follows line break is true, and the first member of node list does 3864 // not follow a line break, call createElement("br") on the context object 3865 // and insert the result immediately before the first member of node list." 3866 if (followsLineBreak_ && !followsLineBreak(nodeList[0])) { 3867 nodeList[0].parentNode.insertBefore(document.createElement("br"), nodeList[0]); 3868 } 3869 3870 // "If the last member of node list is an inline node other than a br, and 3871 // the first child of original parent is a br, and original parent is not 3872 // an inline node, remove the first child of original parent from original 3873 // parent." 3874 if (isInlineNode(nodeList[nodeList.length - 1]) && !isNamedHtmlElement(nodeList[nodeList.length - 1], "br") && isNamedHtmlElement(originalParent.firstChild, "br") && !isInlineNode(originalParent)) { 3875 originalParent.removeChild(originalParent.firstChild); 3876 } 3877 3878 // "If original parent has no children:" 3879 if (!originalParent.hasChildNodes()) { 3880 // if the current range is collapsed and at the end of the originalParent.parentNode 3881 // the offset will not be available anymore after the next step (remove child) 3882 // that's why we need to fix the range to prevent a bogus offset 3883 if (originalParent.parentNode === range.startContainer && originalParent.parentNode === range.endContainer && range.startContainer === range.endContainer && range.startOffset === range.endOffset && originalParent.parentNode.childNodes.length === range.startOffset) { 3884 range.startOffset = originalParent.parentNode.childNodes.length - 1; 3885 range.endOffset = range.startOffset; 3886 } 3887 3888 // "Remove original parent from its parent." 3889 originalParent.parentNode.removeChild(originalParent); 3890 3891 // "If precedes line break is true, and the last member of node list 3892 // does not precede a line break, call createElement("br") on the 3893 // context object and insert the result immediately after the last 3894 // member of node list." 3895 if (precedesLineBreak_ && !precedesLineBreak(nodeList[nodeList.length - 1])) { 3896 nodeList[nodeList.length - 1].parentNode.insertBefore(document.createElement("br"), nodeList[nodeList.length - 1].nextSibling); 3897 } 3898 3899 // "Otherwise, remove extraneous line breaks before original parent." 3900 } else { 3901 removeExtraneousLineBreaksBefore(originalParent); 3902 } 3903 3904 // "If node list's last member's nextSibling is null, but its parent is not 3905 // null, remove extraneous line breaks at the end of node list's last 3906 // member's parent." 3907 if (!nodeList[nodeList.length - 1].nextSibling && nodeList[nodeList.length - 1].parentNode) { 3908 removeExtraneousLineBreaksAtTheEndOf(nodeList[nodeList.length - 1].parentNode); 3909 } 3910 } 3911 3912 //@} 3913 ///// The backColor command ///// 3914 //@{ 3915 commands.backcolor = { 3916 // Copy-pasted, same as hiliteColor 3917 action: function (value, range) { 3918 // Action is further copy-pasted, same as foreColor 3919 3920 // "If value is not a valid CSS color, prepend "#" to it." 3921 // 3922 // "If value is still not a valid CSS color, or if it is currentColor, 3923 // abort these steps and do nothing." 3924 // 3925 // Cheap hack for testing, no attempt to be comprehensive. 3926 if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) { 3927 value = "#" + value; 3928 } 3929 if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") { 3930 return; 3931 } 3932 3933 // "Set the selection's value to value." 3934 setSelectionValue("backcolor", value, range); 3935 }, 3936 standardInlineValueCommand: true, 3937 relevantCssProperty: "backgroundColor", 3938 equivalentValues: function (val1, val2) { 3939 // "Either both strings are valid CSS colors and have the same red, 3940 // green, blue, and alpha components, or neither string is a valid CSS 3941 // color." 3942 return normalizeColor(val1) === normalizeColor(val2); 3943 } 3944 }; 3945 3946 //@} 3947 ///// The bold command ///// 3948 //@{ 3949 commands.bold = { 3950 action: function (value, range) { 3951 // "If queryCommandState("bold") returns true, set the selection's 3952 // value to "normal". Otherwise set the selection's value to "bold"." 3953 if (myQueryCommandState("bold", range)) { 3954 setSelectionValue("bold", "normal", range); 3955 } else { 3956 setSelectionValue("bold", "bold", range); 3957 } 3958 }, 3959 inlineCommandActivatedValues: ["bold", "600", "700", "800", "900"], 3960 relevantCssProperty: "fontWeight", 3961 equivalentValues: function (val1, val2) { 3962 // "Either the two strings are equal, or one is "bold" and the other is 3963 // "700", or one is "normal" and the other is "400"." 3964 return val1 == val2 || (val1 == "bold" && val2 == "700") || (val1 == "700" && val2 == "bold") || (val1 == "normal" && val2 == "400") || (val1 == "400" && val2 == "normal"); 3965 } 3966 }; 3967 3968 //@} 3969 ///// The createLink command ///// 3970 //@{ 3971 commands.createlink = { 3972 action: function (value, range) { 3973 // "If value is the empty string, abort these steps and do nothing." 3974 if (value === "") { 3975 return; 3976 } 3977 3978 // "For each editable a element that has an href attribute and is an 3979 // ancestor of some node effectively contained in the active range, set 3980 // that a element's href attribute to value." 3981 // 3982 // TODO: We don't actually do this in tree order, not that it matters 3983 // unless you're spying with mutation events. 3984 $_(getAllEffectivelyContainedNodes(getActiveRange())).forEach(function (node) { 3985 $_(getAncestors(node)).forEach(function (ancestor) { 3986 if (isEditable(ancestor) && isNamedHtmlElement(ancestor, 'a') && hasAttribute(ancestor, "href")) { 3987 ancestor.setAttribute("href", value); 3988 } 3989 }); 3990 }); 3991 3992 // "Set the selection's value to value." 3993 setSelectionValue("createlink", value, range); 3994 }, 3995 standardInlineValueCommand: true 3996 }; 3997 3998 //@} 3999 ///// The fontName command ///// 4000 //@{ 4001 commands.fontname = { 4002 action: function (value, range) { 4003 // "Set the selection's value to value." 4004 setSelectionValue("fontname", value, range); 4005 }, 4006 standardInlineValueCommand: true, 4007 relevantCssProperty: "fontFamily" 4008 }; 4009 4010 //@} 4011 ///// The fontSize command ///// 4012 //@{ 4013 4014 commands.fontsize = { 4015 action: function (value, range) { 4016 // "If value is the empty string, abort these steps and do nothing." 4017 if (value === "") { 4018 return; 4019 } 4020 4021 value = normalizeFontSize(value); 4022 4023 // "If value is not one of the strings "xx-small", "x-small", "small", 4024 // "medium", "large", "x-large", "xx-large", "xxx-large", and is not a 4025 // valid CSS absolute length, then abort these steps and do nothing." 4026 // 4027 // More cheap hacks to skip valid CSS absolute length checks. 4028 if (jQuery.inArray(value, ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large", "xxx-large"]) == -1 && !/^[0-9]+(\.[0-9]+)?(cm|mm|in|pt|pc)$/.test(value)) { 4029 return; 4030 } 4031 4032 // "Set the selection's value to value." 4033 setSelectionValue("fontsize", value, range); 4034 }, 4035 indeterm: function () { 4036 // "True if among editable Text nodes that are effectively contained in 4037 // the active range, there are two that have distinct effective command 4038 // values. Otherwise false." 4039 return $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 4040 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4041 })).map(function (node) { 4042 return getEffectiveCommandValue(node, "fontsize"); 4043 }, true).filter(function (value, i, arr) { 4044 return $_(arr.slice(0, i)).indexOf(value) == -1; 4045 }).length >= 2; 4046 }, 4047 value: function (range) { 4048 // "Let pixel size be the effective command value of the first editable 4049 // Text node that is effectively contained in the active range, or if 4050 // there is no such node, the effective command value of the active 4051 // range's start node, in either case interpreted as a number of 4052 // pixels." 4053 var node = getAllEffectivelyContainedNodes(range, function (node) { 4054 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4055 })[0]; 4056 if (node === undefined) { 4057 node = range.startContainer; 4058 } 4059 var pixelSize = getEffectiveCommandValue(node, "fontsize"); 4060 4061 // "Return the legacy font size for pixel size." 4062 return getLegacyFontSize(pixelSize); 4063 }, 4064 relevantCssProperty: "fontSize" 4065 }; 4066 4067 //@} 4068 ///// The foreColor command ///// 4069 //@{ 4070 commands.forecolor = { 4071 action: function (value, range) { 4072 // Copy-pasted, same as backColor and hiliteColor 4073 4074 // "If value is not a valid CSS color, prepend "#" to it." 4075 // 4076 // "If value is still not a valid CSS color, or if it is currentColor, 4077 // abort these steps and do nothing." 4078 // 4079 // Cheap hack for testing, no attempt to be comprehensive. 4080 if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) { 4081 value = "#" + value; 4082 } 4083 if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") { 4084 return; 4085 } 4086 4087 // "Set the selection's value to value." 4088 setSelectionValue("forecolor", value, range); 4089 }, 4090 standardInlineValueCommand: true, 4091 relevantCssProperty: "color", 4092 equivalentValues: function (val1, val2) { 4093 // "Either both strings are valid CSS colors and have the same red, 4094 // green, blue, and alpha components, or neither string is a valid CSS 4095 // color." 4096 return normalizeColor(val1) === normalizeColor(val2); 4097 } 4098 }; 4099 4100 //@} 4101 ///// The hiliteColor command ///// 4102 //@{ 4103 commands.hilitecolor = { 4104 // Copy-pasted, same as backColor 4105 action: function (value, range) { 4106 // Action is further copy-pasted, same as foreColor 4107 4108 // "If value is not a valid CSS color, prepend "#" to it." 4109 // 4110 // "If value is still not a valid CSS color, or if it is currentColor, 4111 // abort these steps and do nothing." 4112 // 4113 // Cheap hack for testing, no attempt to be comprehensive. 4114 if (/^([0-9a-fA-F]{3}){1,2}$/.test(value)) { 4115 value = "#" + value; 4116 } 4117 if (!/^(rgba?|hsla?)\(.*\)$/.test(value) && !parseSimpleColor(value) && value.toLowerCase() != "transparent") { 4118 return; 4119 } 4120 4121 // "Set the selection's value to value." 4122 setSelectionValue("hilitecolor", value, range); 4123 }, 4124 indeterm: function () { 4125 // "True if among editable Text nodes that are effectively contained in 4126 // the active range, there are two that have distinct effective command 4127 // values. Otherwise false." 4128 return $_(getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 4129 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4130 })).map(function (node) { 4131 return getEffectiveCommandValue(node, "hilitecolor"); 4132 }, true).filter(function (value, i, arr) { 4133 return $_(arr.slice(0, i)).indexOf(value) == -1; 4134 }).length >= 2; 4135 }, 4136 standardInlineValueCommand: true, 4137 relevantCssProperty: "backgroundColor", 4138 equivalentValues: function (val1, val2) { 4139 // "Either both strings are valid CSS colors and have the same red, 4140 // green, blue, and alpha components, or neither string is a valid CSS 4141 // color." 4142 return normalizeColor(val1) === normalizeColor(val2); 4143 } 4144 }; 4145 4146 //@} 4147 ///// The italic command ///// 4148 //@{ 4149 commands.italic = { 4150 action: function (value, range) { 4151 // "If queryCommandState("italic") returns true, set the selection's 4152 // value to "normal". Otherwise set the selection's value to "italic"." 4153 if (myQueryCommandState("italic", range)) { 4154 setSelectionValue("italic", "normal", range); 4155 } else { 4156 setSelectionValue("italic", "italic", range); 4157 4158 } 4159 }, 4160 inlineCommandActivatedValues: ["italic", "oblique"], 4161 relevantCssProperty: "fontStyle" 4162 }; 4163 4164 //@} 4165 ///// The removeFormat command ///// 4166 //@{ 4167 commands.removeformat = { 4168 action: function (value, range) { 4169 var newEnd, newStart, newNode; 4170 4171 // "A removeFormat candidate is an editable HTML element with local 4172 // name "abbr", "acronym", "b", "bdi", "bdo", "big", "blink", "cite", 4173 // "code", "dfn", "em", "font", "i", "ins", "kbd", "mark", "nobr", "q", 4174 // "s", "samp", "small", "span", "strike", "strong", "sub", "sup", 4175 // "tt", "u", or "var"." 4176 function isRemoveFormatCandidate(node) { 4177 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"]); 4178 } 4179 4180 // "Let elements to remove be a list of every removeFormat candidate 4181 // effectively contained in the active range." 4182 var elementsToRemove = getAllEffectivelyContainedNodes(getActiveRange(), isRemoveFormatCandidate); 4183 4184 // "For each element in elements to remove:" 4185 $_(elementsToRemove).forEach(function (element) { 4186 // "While element has children, insert the first child of element 4187 // into the parent of element immediately before element, 4188 // preserving ranges." 4189 while (element.hasChildNodes()) { 4190 movePreservingRanges(element.firstChild, element.parentNode, Dom.getIndexInParent(element), getActiveRange()); 4191 } 4192 4193 // "Remove element from its parent." 4194 element.parentNode.removeChild(element); 4195 }); 4196 4197 // "If the active range's start node is an editable Text node, and its 4198 // start offset is neither zero nor its start node's length, call 4199 // splitText() on the active range's start node, with argument equal to 4200 // the active range's start offset. Then set the active range's start 4201 // node to the result, and its start offset to zero." 4202 if (isEditable(getActiveRange().startContainer) && getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset != 0 && getActiveRange().startOffset != getNodeLength(getActiveRange().startContainer)) { 4203 // Account for browsers not following range mutation rules 4204 if (getActiveRange().startContainer == getActiveRange().endContainer) { 4205 newEnd = getActiveRange().endOffset - getActiveRange().startOffset; 4206 newNode = splitText(getActiveRange().startContainer, getActiveRange().startOffset); 4207 getActiveRange().setStart(newNode, 0); 4208 getActiveRange().setEnd(newNode, newEnd); 4209 } else { 4210 getActiveRange().setStart(splitText(getActiveRange().startContainer, getActiveRange().startOffset), 0); 4211 } 4212 } 4213 4214 // "If the active range's end node is an editable Text node, and its 4215 // end offset is neither zero nor its end node's length, call 4216 // splitText() on the active range's end node, with argument equal to 4217 // the active range's end offset." 4218 if (isEditable(getActiveRange().endContainer) && getActiveRange().endContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().endOffset != 0 && getActiveRange().endOffset != getNodeLength(getActiveRange().endContainer)) { 4219 // IE seems to mutate the range incorrectly here, so we need 4220 // correction here as well. Have to be careful to set the range to 4221 // something not including the text node so that getActiveRange() 4222 // doesn't throw an exception due to a temporarily detached 4223 // endpoint. 4224 newStart = [getActiveRange().startContainer, getActiveRange().startOffset]; 4225 newEnd = [getActiveRange().endContainer, getActiveRange().endOffset]; 4226 getActiveRange().setEnd(document.documentElement, 0); 4227 splitText(newEnd[0], newEnd[1]); 4228 getActiveRange().setStart(newStart[0], newStart[1]); 4229 getActiveRange().setEnd(newEnd[0], newEnd[1]); 4230 } 4231 4232 // "Let node list consist of all editable nodes effectively contained 4233 // in the active range." 4234 // 4235 // "For each node in node list, while node's parent is a removeFormat 4236 // candidate in the same editing host as node, split the parent of the 4237 // one-node list consisting of node." 4238 $_(getAllEffectivelyContainedNodes(getActiveRange(), isEditable)).forEach(function (node) { 4239 while (isRemoveFormatCandidate(node.parentNode) && inSameEditingHost(node.parentNode, node)) { 4240 splitParent([node], getActiveRange()); 4241 } 4242 }); 4243 4244 // "For each of the entries in the following list, in the given order, 4245 // set the selection's value to null, with command as given." 4246 $_(["subscript", "bold", "fontname", "fontsize", "forecolor", "hilitecolor", "italic", "strikethrough", "underline"]).forEach(function (command) { 4247 setSelectionValue(command, null, range); 4248 }); 4249 } 4250 }; 4251 4252 //@} 4253 ///// The strikethrough command ///// 4254 //@{ 4255 commands.strikethrough = { 4256 action: function (value, range) { 4257 // "If queryCommandState("strikethrough") returns true, set the 4258 // selection's value to null. Otherwise set the selection's value to 4259 // "line-through"." 4260 if (myQueryCommandState("strikethrough", range)) { 4261 setSelectionValue("strikethrough", null, range); 4262 } else { 4263 setSelectionValue("strikethrough", "line-through", range); 4264 } 4265 }, 4266 inlineCommandActivatedValues: ["line-through"] 4267 }; 4268 4269 //@} 4270 ///// The subscript command ///// 4271 //@{ 4272 commands.subscript = { 4273 action: function (value, range) { 4274 // "Call queryCommandState("subscript"), and let state be the result." 4275 var state = myQueryCommandState("subscript", range); 4276 4277 // "Set the selection's value to null." 4278 setSelectionValue("subscript", null, range); 4279 4280 // "If state is false, set the selection's value to "subscript"." 4281 if (!state) { 4282 setSelectionValue("subscript", "subscript", range); 4283 } 4284 }, 4285 indeterm: function () { 4286 // "True if either among editable Text nodes that are effectively 4287 // contained in the active range, there is at least one with effective 4288 // command value "subscript" and at least one with some other effective 4289 // command value; or if there is some editable Text node effectively 4290 // contained in the active range with effective command value "mixed". 4291 // Otherwise false." 4292 var nodes = getAllEffectivelyContainedNodes(getActiveRange(), function (node) { 4293 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4294 }); 4295 return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "subscript"; }) 4296 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") != "subscript"; })) 4297 || $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "subscript") == "mixed"; })); 4298 }, 4299 inlineCommandActivatedValues: ["subscript"] 4300 }; 4301 4302 //@} 4303 ///// The superscript command ///// 4304 //@{ 4305 commands.superscript = { 4306 action: function (value, range) { 4307 // "Call queryCommandState("superscript"), and let state be the 4308 // result." 4309 var state = myQueryCommandState("superscript", range); 4310 4311 // "Set the selection's value to null." 4312 setSelectionValue("superscript", null, range); 4313 4314 // "If state is false, set the selection's value to "superscript"." 4315 if (!state) { 4316 setSelectionValue("superscript", "superscript", range); 4317 } 4318 }, 4319 indeterm: function () { 4320 // "True if either among editable Text nodes that are effectively 4321 // contained in the active range, there is at least one with effective 4322 // command value "superscript" and at least one with some other 4323 // effective command value; or if there is some editable Text node 4324 // effectively contained in the active range with effective command 4325 // value "mixed". Otherwise false." 4326 var nodes = getAllEffectivelyContainedNodes( 4327 getActiveRange(), 4328 function (node) { 4329 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 4330 } 4331 ); 4332 return (($_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "superscript"; }) 4333 && $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") != "superscript"; })) 4334 || $_(nodes).some(function (node) { return getEffectiveCommandValue(node, "superscript") == "mixed"; })); 4335 }, 4336 inlineCommandActivatedValues: ["superscript"] 4337 }; 4338 4339 //@} 4340 ///// The underline command ///// 4341 //@{ 4342 commands.underline = { 4343 action: function (value, range) { 4344 // "If queryCommandState("underline") returns true, set the selection's 4345 // value to null. Otherwise set the selection's value to "underline"." 4346 if (myQueryCommandState("underline", range)) { 4347 setSelectionValue("underline", null, range); 4348 } else { 4349 setSelectionValue("underline", "underline", range); 4350 } 4351 }, 4352 4353 inlineCommandActivatedValues: ["underline"] 4354 }; 4355 4356 //@} 4357 ///// The unlink command ///// 4358 //@{ 4359 commands.unlink = { 4360 action: function () { 4361 // "Let hyperlinks be a list of every a element that has an href 4362 // attribute and is contained in the active range or is an ancestor of 4363 // one of its boundary points." 4364 // 4365 // As usual, take care to ensure it's tree order. The correctness of 4366 // the following is left as an exercise for the reader. 4367 var range = getActiveRange(); 4368 var hyperlinks = []; 4369 var node; 4370 for (node = range.startContainer; node; node = node.parentNode) { 4371 if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href")) { 4372 hyperlinks.unshift(node); 4373 } 4374 } 4375 for (node = range.startContainer; node != nextNodeDescendants(range.endContainer); node = nextNode(node)) { 4376 if (isNamedHtmlElement(node, 'A') && hasAttribute(node, "href") && (isContained(node, range) || isAncestor(node, range.endContainer) || node == range.endContainer)) { 4377 hyperlinks.push(node); 4378 } 4379 } 4380 4381 // "Clear the value of each member of hyperlinks." 4382 var i; 4383 for (i = 0; i < hyperlinks.length; i++) { 4384 clearValue(hyperlinks[i], "unlink", range); 4385 } 4386 }, 4387 standardInlineValueCommand: true 4388 }; 4389 4390 //@} 4391 4392 ///////////////////////////////////// 4393 ///// Block formatting commands ///// 4394 ///////////////////////////////////// 4395 4396 ///// Block formatting command definitions ///// 4397 //@{ 4398 4399 // "An indentation element is either a blockquote, or a div that has a style 4400 // attribute that sets "margin" or some subproperty of it." 4401 function isIndentationElement(node) { 4402 // Handling of indentation elements while deleting is somehow broken (pressing backspace 4403 // in blockquotes wraps the blockquote into a div, ...) 4404 // therefore for now, we pretend that indentation elements do not exist at all. 4405 return false; 4406 } 4407 4408 // "A simple indentation element is an indentation element that has no 4409 // attributes other than one or more of 4410 // 4411 // * "a style attribute that sets no properties other than "margin", "border", 4412 // "padding", or subproperties of those; 4413 // * "a class attribute; 4414 // * "a dir attribute." 4415 function isSimpleIndentationElement(node) { 4416 if (!isIndentationElement(node)) { 4417 return false; 4418 } 4419 4420 if (node.tagName != "BLOCKQUOTE" && node.tagName != "DIV") { 4421 return false; 4422 } 4423 4424 var i; 4425 for (i = 0; i < node.attributes.length; i++) { 4426 if (!isHtmlNamespace(node.attributes[i].namespaceURI) || jQuery.inArray(node.attributes[i].name, ["style", "class", "dir"]) == -1) { 4427 return false; 4428 } 4429 } 4430 4431 if (typeof node.style.length !== 'undefined') { 4432 for (i = 0; i < node.style.length; i++) { 4433 // This is approximate, but it works well enough for my purposes. 4434 if (!/^(-[a-z]+-)?(margin|border|padding)/.test(node.style[i])) { 4435 return false; 4436 } 4437 } 4438 } else { 4439 var s; 4440 /*jslint forin: true*/ //not sure whether node.style.hasOwnProperty is valid 4441 for (s in node.style) { 4442 // This is approximate, but it works well enough for my purposes. 4443 if (!/^(-[a-z]+-)?(margin|border|padding)/.test(s) && node.style[s] && node.style[s] !== 0 && node.style[s] !== 'false') { 4444 return false; 4445 } 4446 } 4447 /*jslint forin: false*/ 4448 } 4449 4450 return true; 4451 } 4452 4453 // "A non-list single-line container is an HTML element with local name 4454 // "address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre", 4455 // or "xmp"." 4456 function isNonListSingleLineContainer(node) { 4457 return isHtmlElementInArray(node, ["address", "div", "h1", "h2", "h3", "h4", "h5", "h6", "listing", "p", "pre", "xmp"]); 4458 } 4459 4460 // "A single-line container is either a non-list single-line container, or an 4461 // HTML element with local name "li", "dt", or "dd"." 4462 function isSingleLineContainer(node) { 4463 return isNonListSingleLineContainer(node) || isHtmlElementInArray(node, ["li", "dt", "dd"]); 4464 } 4465 4466 // "The default single-line container name is "p"." 4467 var defaultSingleLineContainerName = "p"; 4468 4469 //@} 4470 ///// Check whether the given element is an end break ///// 4471 //@{ 4472 function isEndBreak(element) { 4473 return (isNamedHtmlElement(element, 'br') && element.parentNode.lastChild === element); 4474 } 4475 4476 //@} 4477 ///// Create an end break ///// 4478 //@{ 4479 function createEndBreak() { 4480 return document.createElement("br"); 4481 } 4482 4483 /** 4484 * Ensure the container is editable 4485 * E.g. when called for an empty paragraph or header, and the browser is not IE, 4486 * we need to append a br (marked with class aloha-end-br) 4487 * For IE7, there is a special behaviour that will append zero-width whitespace 4488 * @param {DOMNode} container 4489 */ 4490 function ensureContainerEditable(container) { 4491 if (!container) { 4492 return; 4493 } 4494 4495 // Because it is useful to be able to completely empty the contents of 4496 // an editing host during editing. So long as the container's 4497 // contenteditable attribute is "true" (as is the case during editing), 4498 // the element will be rendered visibly in all browsers. This fact 4499 // allows us to not have to prop up the container with a <br> in order 4500 // to keep it accessible to the editor. 4501 if (isEditingHost(container)) { 4502 return; 4503 } 4504 4505 if (isNamedHtmlElement(container.lastChild, "br")) { 4506 return; 4507 } 4508 4509 if ($_(container.childNodes).some(isVisible)) { 4510 return; 4511 } 4512 4513 if (!Aloha.browser.msie) { 4514 // for normal browsers, the end-br will do 4515 container.appendChild(createEndBreak()); 4516 } else if (Aloha.browser.msie && Aloha.browser.version <= 7 && isHtmlElementInArray(container, ["p", "h1", "h2", "h3", "h4", "h5", "h6", "pre", "blockquote"])) { 4517 // for IE7, we need to insert a text node containing a single zero-width whitespace character 4518 if (!container.firstChild) { 4519 container.appendChild(document.createTextNode('\u200b')); 4520 } 4521 } 4522 } 4523 4524 /** 4525 * Node names that can not be unwrapped. 4526 * 4527 * @const 4528 * @type {string[]} 4529 */ 4530 var NOT_UNWRAPPABLE_NODES = ['TABLE', 'OL', 'UL', 'DL']; 4531 4532 /** 4533 * Checks if `node` can be unwrapped. 4534 * 4535 * @param {Element} node 4536 * @return {boolean} 4537 */ 4538 function isUnwrappable(node) { 4539 return jQuery.inArray(node.nodeName, NOT_UNWRAPPABLE_NODES) === -1; 4540 } 4541 //@} 4542 ///// Assorted block formatting command algorithms ///// 4543 //@{ 4544 4545 function fixDisallowedAncestors(node, range) { 4546 var i; 4547 4548 // "If node is not editable, abort these steps." 4549 if (!isEditable(node)) { 4550 return; 4551 } 4552 4553 // "If node is not an allowed child of any of its ancestors in the same 4554 // editing host, and is not an HTML element with local name equal to the 4555 // default single-line container name:" 4556 if ($_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); }) 4557 && !isHtmlElement_obsolete(node, defaultSingleLineContainerName)) { 4558 // "If node is a dd or dt, wrap the one-node list consisting of node, 4559 // with sibling criteria returning true for any dl with no attributes 4560 // and false otherwise, and new parent instructions returning the 4561 // result of calling createElement("dl") on the context object. Then 4562 // abort these steps." 4563 if (isHtmlElementInArray(node, ["dd", "dt"])) { 4564 wrap( 4565 [node], 4566 function (sibling) { 4567 return isNamedHtmlElement(sibling, 'dl') && !sibling.attributes.length; 4568 }, 4569 function () { 4570 return document.createElement("dl"); 4571 }, 4572 range 4573 ); 4574 return; 4575 } 4576 4577 // "If node is not a prohibited paragraph child, abort these steps." 4578 if (!isProhibitedParagraphChild(node)) { 4579 return; 4580 } 4581 4582 // "Set the tag name of node to the default single-line container name, 4583 // and let node be the result." 4584 node = setTagName(node, defaultSingleLineContainerName, range); 4585 4586 ensureContainerEditable(node); 4587 4588 // "Fix disallowed ancestors of node." 4589 fixDisallowedAncestors(node, range); 4590 4591 // "Let descendants be all descendants of node." 4592 var descendants = getDescendants(node); 4593 4594 // "Fix disallowed ancestors of each member of descendants." 4595 for (i = 0; i < descendants.length; i++) { 4596 fixDisallowedAncestors(descendants[i], range); 4597 } 4598 4599 // "Abort these steps." 4600 return; 4601 } 4602 4603 // "Record the values of the one-node list consisting of node, and let 4604 // values be the result." 4605 var values = recordValues([node]); 4606 var newStartOffset, newEndOffset; 4607 4608 // "While node is not an allowed child of its parent, split the parent of 4609 // the one-node list consisting of node." 4610 while (!isAllowedChild(node, node.parentNode)) { 4611 // If the parent contains only this node and possibly empty text nodes, we rather want to unwrap the node, instead of splitting. 4612 // With splitting, we would get empty nodes, like: 4613 // split: <p><p>foo</p></p> -> <p></p><p>foo</p> (bad) 4614 // unwrap: <p><p>foo</p></p> -> <p>foo</p> (good) 4615 4616 // First remove empty text nodes that are children of the parent and correct the range if necessary 4617 // we do this to have the node being the only child of its parent, so that we can replace the parent with the node 4618 for (i = node.parentNode.childNodes.length - 1; i >= 0; --i) { 4619 if (node.parentNode.childNodes[i].nodeType == 3 && node.parentNode.childNodes[i].data.length == 0) { 4620 // we remove the empty text node 4621 node.parentNode.removeChild(node.parentNode.childNodes[i]); 4622 4623 // if the range points to somewhere behind the removed text node, we reduce the offset 4624 if (range.startContainer == node.parentNode && range.startOffset > i) { 4625 range.startOffset--; 4626 } 4627 if (range.endContainer == node.parentNode && range.endOffset > i) { 4628 range.endOffset--; 4629 } 4630 } 4631 } 4632 4633 // now that the parent has only the node as child (because we 4634 // removed any existing empty text nodes), we can safely unwrap the 4635 // node's contents, and correct the range if necessary 4636 // if the node is unwrappable (table, lists) the node is not unwrapped 4637 // but splitted. 4638 if (node.parentNode.childNodes.length == 1 && isUnwrappable(node)) { 4639 newStartOffset = range.startOffset; 4640 newEndOffset = range.endOffset; 4641 4642 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4643 // the node (1 element) will be replaced by its contents (contents().length elements) 4644 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4645 } 4646 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4647 // the node (1 element) will be replaced by its contents (contents().length elements) 4648 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4649 } 4650 jQuery(node).contents().unwrap(); 4651 range.startOffset = newStartOffset; 4652 range.endOffset = newEndOffset; 4653 // after unwrapping, we are done 4654 break; 4655 } else { 4656 // store the original parent 4657 var originalParent = node.parentNode; 4658 splitParent([node], range); 4659 // check whether the parent did not change, so the split did not work, e.g. 4660 // because we already reached the editing host itself. 4661 // this situation can occur, e.g. when we insert a paragraph into an contenteditable span 4662 // in such cases, we just unwrap the contents of the paragraph 4663 if (originalParent === node.parentNode) { 4664 // so we unwrap now 4665 newStartOffset = range.startOffset; 4666 newEndOffset = range.endOffset; 4667 4668 if (range.startContainer === node.parentNode && range.startOffset > Dom.getIndexInParent(node)) { 4669 // the node (1 element) will be replaced by its contents (contents().length elements) 4670 newStartOffset = range.startOffset + (jQuery(node).contents().length - 1); 4671 } 4672 if (range.endContainer === node.parentNode && range.endOffset > Dom.getIndexInParent(node)) { 4673 // the node (1 element) will be replaced by its contents (contents().length elements) 4674 newEndOffset = range.endOffset + (jQuery(node).contents().length - 1); 4675 } 4676 jQuery(node).contents().unwrap(); 4677 range.startOffset = newStartOffset; 4678 range.endOffset = newEndOffset; 4679 // after unwrapping, we are done 4680 break; 4681 } 4682 } 4683 } 4684 4685 // "Restore the values from values." 4686 restoreValues(values, range); 4687 } 4688 4689 /** 4690 * This method "normalizes" sublists of the given item (which is supposed to be a LI): 4691 * If sublists are found in the LI element, they are moved directly into the outer list. 4692 * @param item item 4693 * @param range range, which will be modified if necessary 4694 */ 4695 function normalizeSublists(item, range) { 4696 // "If item is not an li or it is not editable or its parent is not 4697 // editable, abort these steps." 4698 if (!isNamedHtmlElement(item, 'LI') || !isEditable(item) || !isEditable(item.parentNode)) { 4699 return; 4700 } 4701 4702 // "Let new item be null." 4703 var newItem = null; 4704 4705 function isOlUl(node) { 4706 return isHtmlElementInArray(node, ["OL", "UL"]); 4707 } 4708 4709 // "While item has an ol or ul child:" 4710 while ($_(item.childNodes).some(isOlUl)) { 4711 // "Let child be the last child of item." 4712 var child = item.lastChild; 4713 4714 // "If child is an ol or ul, or new item is null and child is a Text 4715 // node whose data consists of zero of more space characters:" 4716 if (isHtmlElementInArray(child, ["OL", "UL"]) || (!newItem && child.nodeType == $_.Node.TEXT_NODE && /^[ \t\n\f\r]*$/.test(child.data))) { 4717 // "Set new item to null." 4718 newItem = null; 4719 4720 // "Insert child into the parent of item immediately following 4721 // item, preserving ranges." 4722 movePreservingRanges(child, item.parentNode, 1 + Dom.getIndexInParent(item), range); 4723 4724 // "Otherwise:" 4725 } else { 4726 // "If new item is null, let new item be the result of calling 4727 // createElement("li") on the ownerDocument of item, then insert 4728 // new item into the parent of item immediately after item." 4729 if (!newItem) { 4730 newItem = item.ownerDocument.createElement("li"); 4731 item.parentNode.insertBefore(newItem, item.nextSibling); 4732 } 4733 4734 // "Insert child into new item as its first child, preserving 4735 // ranges." 4736 movePreservingRanges(child, newItem, 0, range); 4737 } 4738 } 4739 } 4740 4741 /** 4742 * This method is the exact opposite of normalizeSublists. 4743 * List nodes directly nested into each other are corrected to be nested in li elements (so that the resulting lists conform the html5 specification) 4744 * @param item list node 4745 * @param range range, which is preserved when modifying the list 4746 */ 4747 function unNormalizeSublists(item, range) { 4748 // "If item is not an ol or ol or it is not editable or its parent is not 4749 // editable, abort these steps." 4750 if (!isHtmlElementInArray(item, ["OL", "UL"]) || !isEditable(item)) { 4751 return; 4752 } 4753 4754 var $list = jQuery(item); 4755 $list.children("ol,ul").each(function (index, sublist) { 4756 if (isNamedHtmlElement(sublist.previousSibling, "LI")) { 4757 // move the sublist into the LI 4758 movePreservingRanges(sublist, sublist.previousSibling, sublist.previousSibling.childNodes.length, range); 4759 } 4760 }); 4761 } 4762 4763 //@} 4764 ///// Block-extending a range ///// 4765 //@{ 4766 4767 function blockExtend(range) { 4768 // "Let start node, start offset, end node, and end offset be the start 4769 // and end nodes and offsets of the range." 4770 var startNode = range.startContainer; 4771 var startOffset = range.startOffset; 4772 var endNode = range.endContainer; 4773 var endOffset = range.endOffset; 4774 4775 // "If some ancestor container of start node is an li, set start offset to 4776 // the index of the last such li in tree order, and set start node to that 4777 // li's parent." 4778 var liAncestors = $_(getAncestors(startNode).concat(startNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4779 if (liAncestors.length) { 4780 startOffset = Dom.getIndexInParent(liAncestors[0]); 4781 startNode = liAncestors[0].parentNode; 4782 } 4783 4784 // "If (start node, start offset) is not a block start point, repeat the 4785 // following steps:" 4786 if (!isBlockStartPoint(startNode, startOffset)) { 4787 do { 4788 // "If start offset is zero, set it to start node's index, then set 4789 // start node to its parent." 4790 if (startOffset == 0) { 4791 startOffset = Dom.getIndexInParent(startNode); 4792 startNode = startNode.parentNode; 4793 4794 // "Otherwise, subtract one from start offset." 4795 } else { 4796 startOffset--; 4797 } 4798 4799 // "If (start node, start offset) is a block boundary point, break from 4800 // this loop." 4801 } while (!isBlockBoundaryPoint(startNode, startOffset)); 4802 } 4803 4804 // "While start offset is zero and start node's parent is not null, set 4805 // start offset to start node's index, then set start node to its parent." 4806 while (startOffset == 0 && startNode.parentNode) { 4807 startOffset = Dom.getIndexInParent(startNode); 4808 startNode = startNode.parentNode; 4809 } 4810 4811 // "If some ancestor container of end node is an li, set end offset to one 4812 // plus the index of the last such li in tree order, and set end node to 4813 // that li's parent." 4814 liAncestors = $_(getAncestors(endNode).concat(endNode)).filter(function (ancestor) { return isNamedHtmlElement(ancestor, 'li'); }).slice(-1); 4815 if (liAncestors.length) { 4816 endOffset = 1 + Dom.getIndexInParent(liAncestors[0]); 4817 endNode = liAncestors[0].parentNode; 4818 } 4819 4820 // "If (end node, end offset) is not a block end point, repeat the 4821 // following steps:" 4822 if (!isBlockEndPoint(endNode, endOffset)) { 4823 do { 4824 // "If end offset is end node's length, set it to one plus end node's 4825 // index, then set end node to its parent." 4826 if (endOffset == getNodeLength(endNode)) { 4827 endOffset = 1 + Dom.getIndexInParent(endNode); 4828 endNode = endNode.parentNode; 4829 4830 // "Otherwise, add one to end offset. 4831 } else { 4832 endOffset++; 4833 } 4834 4835 // "If (end node, end offset) is a block boundary point, break from 4836 // this loop." 4837 } while (!isBlockBoundaryPoint(endNode, endOffset)); 4838 } 4839 4840 // "While end offset is end node's length and end node's parent is not 4841 // null, set end offset to one plus end node's index, then set end node to 4842 // its parent." 4843 while (endOffset == getNodeLength(endNode) && endNode.parentNode) { 4844 endOffset = 1 + Dom.getIndexInParent(endNode); 4845 endNode = endNode.parentNode; 4846 } 4847 4848 // "Let new range be a new range whose start and end nodes and offsets 4849 // are start node, start offset, end node, and end offset." 4850 var newRange = Aloha.createRange(); 4851 newRange.setStart(startNode, startOffset); 4852 newRange.setEnd(endNode, endOffset); 4853 4854 // "Return new range." 4855 return newRange; 4856 } 4857 4858 function getSelectionListState() { 4859 // "Block-extend the active range, and let new range be the result." 4860 var newRange = blockExtend(getActiveRange()); 4861 4862 // "Let node list be a list of nodes, initially empty." 4863 // 4864 // "For each node contained in new range, append node to node list if the 4865 // last member of node list (if any) is not an ancestor of node; node is 4866 // editable; node is not an indentation element; and node is either an ol 4867 // or ul, or the child of an ol or ul, or an allowed child of "li"." 4868 var nodeList = getContainedNodes(newRange, function (node) { 4869 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]) || isAllowedChild(node, "li")); 4870 }); 4871 4872 // "If node list is empty, return "none"." 4873 if (!nodeList.length) { 4874 return "none"; 4875 } 4876 4877 // "If every member of node list is either an ol or the child of an ol or 4878 // the child of an li child of an ol, and none is a ul or an ancestor of a 4879 // ul, return "ol"." 4880 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ol') 4881 || isNamedHtmlElement(node.parentNode, "ol") 4882 || (isNamedHtmlElement(node.parentNode, "li") 4883 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); }) 4884 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ul') || (node.querySelector && node.querySelector("ul")); })) { 4885 return "ol"; 4886 } 4887 4888 // "If every member of node list is either a ul or the child of a ul or the 4889 // child of an li child of a ul, and none is an ol or an ancestor of an ol, 4890 // return "ul"." 4891 if ($_(nodeList).every(function (node) { return (isNamedHtmlElement(node, 'ul') 4892 || isNamedHtmlElement(node.parentNode, "ul") 4893 || (isNamedHtmlElement(node.parentNode, "li") 4894 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); }) 4895 && !$_(nodeList).some(function (node) { return isNamedHtmlElement(node, 'ol') || (node.querySelector && node.querySelector("ol")); })) { 4896 return "ul"; 4897 } 4898 4899 var hasOl = $_(nodeList).some(function (node) { 4900 return (isNamedHtmlElement(node, 'ol') 4901 || isNamedHtmlElement(node.parentNode, "ol") 4902 || (node.querySelector && node.querySelector("ol")) 4903 || (isNamedHtmlElement(node.parentNode, "li") 4904 && isNamedHtmlElement(node.parentNode.parentNode, "ol"))); 4905 }); 4906 var hasUl = $_(nodeList).some(function (node) { 4907 return (isNamedHtmlElement(node, 'ul') 4908 || isNamedHtmlElement(node.parentNode, "ul") 4909 || (node.querySelector && node.querySelector("ul")) 4910 || (isNamedHtmlElement(node.parentNode, "li") 4911 && isNamedHtmlElement(node.parentNode.parentNode, "ul"))); 4912 }); 4913 // "If some member of node list is either an ol or the child or ancestor of 4914 // an ol or the child of an li child of an ol, and some member of node list 4915 // is either a ul or the child or ancestor of a ul or the child of an li 4916 // child of a ul, return "mixed"." 4917 if (hasOl && hasUl) { 4918 return "mixed"; 4919 } 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, return "mixed ol"." 4923 if (hasOl) { 4924 return "mixed ol"; 4925 } 4926 4927 // "If some member of node list is either a ul or the child or ancestor of 4928 // a ul or the child of an li child of a ul, return "mixed ul"." 4929 if (hasUl) { 4930 return "mixed ul"; 4931 } 4932 4933 // "Return "none"." 4934 return "none"; 4935 } 4936 4937 function getAlignmentValue(node) { 4938 // "While node is neither null nor an Element, or it is an Element but its 4939 // "display" property has resolved value "inline" or "none", set node to 4940 // its parent." 4941 while ((node && node.nodeType != $_.Node.ELEMENT_NODE) || (node.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(node).display, ["inline", "none"]) != -1)) { 4942 node = node.parentNode; 4943 } 4944 4945 4946 // "If node is not an Element, return "left"." 4947 if (!node || node.nodeType != $_.Node.ELEMENT_NODE) { 4948 return "left"; 4949 } 4950 4951 var resolvedValue = $_.getComputedStyle(node).textAlign 4952 // Hack around browser non-standardness 4953 .replace(/^-(moz|webkit)-/, "").replace(/^auto$/, "start"); 4954 4955 // "If node's "text-align" property has resolved value "start", return 4956 // "left" if the directionality of node is "ltr", "right" if it is "rtl"." 4957 if (resolvedValue == "start") { 4958 return getDirectionality(node) == "ltr" ? "left" : "right"; 4959 } 4960 4961 // "If node's "text-align" property has resolved value "end", return 4962 // "right" if the directionality of node is "ltr", "left" if it is "rtl"." 4963 if (resolvedValue == "end") { 4964 return getDirectionality(node) == "ltr" ? "right" : "left"; 4965 } 4966 4967 // "If node's "text-align" property has resolved value "center", "justify", 4968 // "left", or "right", return that value." 4969 if (jQuery.inArray(resolvedValue, ["center", "justify", "left", "right"]) != -1) { 4970 return resolvedValue; 4971 } 4972 4973 // "Return "left"." 4974 return "left"; 4975 } 4976 4977 //@} 4978 ///// Recording and restoring overrides ///// 4979 //@{ 4980 4981 function recordCurrentOverrides(range) { 4982 // "Let overrides be a list of (string, string or boolean) ordered pairs, 4983 // initially empty." 4984 var overrides = []; 4985 4986 // "If there is a value override for "createLink", add ("createLink", value 4987 // override for "createLink") to overrides." 4988 if (getValueOverride("createlink", range) !== undefined) { 4989 overrides.push(["createlink", getValueOverride("createlink", range)]); 4990 } 4991 4992 // "For each command in the list "bold", "italic", "strikethrough", 4993 // "subscript", "superscript", "underline", in order: if there is a state 4994 // override for command, add (command, command's state override) to 4995 // overrides." 4996 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 4997 if (getStateOverride(command, range) !== undefined) { 4998 overrides.push([command, getStateOverride(command, range)]); 4999 } 5000 }); 5001 5002 // "For each command in the list "fontName", "fontSize", "foreColor", 5003 // "hiliteColor", in order: if there is a value override for command, add 5004 // (command, command's value override) to overrides." 5005 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 5006 if (getValueOverride(command, range) !== undefined) { 5007 overrides.push([command, getValueOverride(command, range)]); 5008 } 5009 }); 5010 5011 // "Return overrides." 5012 return overrides; 5013 } 5014 5015 function recordCurrentStatesAndValues(range) { 5016 // "Let overrides be a list of (string, string or boolean) ordered pairs, 5017 // initially empty." 5018 var overrides = []; 5019 5020 // "Let node be the first editable Text node effectively contained in the 5021 // active range, or null if there is none." 5022 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5023 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5024 })[0]; 5025 5026 // "If node is null, return overrides." 5027 if (!node) { 5028 return overrides; 5029 } 5030 5031 // "Add ("createLink", value for "createLink") to overrides." 5032 overrides.push(["createlink", commands.createlink.value(range)]); 5033 5034 // "For each command in the list "bold", "italic", "strikethrough", 5035 // "subscript", "superscript", "underline", in order: if node's effective 5036 // command value for command is one of its inline command activated values, 5037 // add (command, true) to overrides, and otherwise add (command, false) to 5038 // overrides." 5039 $_(["bold", "italic", "strikethrough", "subscript", "superscript", "underline"]).forEach(function (command) { 5040 if ($_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1) { 5041 overrides.push([command, true]); 5042 } else { 5043 overrides.push([command, false]); 5044 } 5045 }); 5046 5047 // "For each command in the list "fontName", "foreColor", "hiliteColor", in 5048 // order: add (command, command's value) to overrides." 5049 5050 $_(["fontname", "fontsize", "forecolor", "hilitecolor"]).forEach(function (command) { 5051 overrides.push([command, commands[command].value(range)]); 5052 }); 5053 5054 // "Add ("fontSize", node's effective command value for "fontSize") to 5055 // overrides." 5056 overrides.push(["fontsize", getEffectiveCommandValue(node, "fontsize")]); 5057 5058 // "Return overrides." 5059 return overrides; 5060 } 5061 5062 function restoreStatesAndValues(overrides, range) { 5063 var i; 5064 var command; 5065 var override; 5066 // "Let node be the first editable Text node effectively contained in the 5067 // active range, or null if there is none." 5068 var node = $_(getAllEffectivelyContainedNodes(range)).filter(function (node) { 5069 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5070 })[0]; 5071 5072 function isEditableTextNode(node) { 5073 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 5074 } 5075 5076 // "If node is not null, then for each (command, override) pair in 5077 // overrides, in order:" 5078 if (node) { 5079 5080 for (i = 0; i < overrides.length; i++) { 5081 command = overrides[i][0]; 5082 override = overrides[i][1]; 5083 5084 // "If override is a boolean, and queryCommandState(command) 5085 // returns something different from override, call 5086 // execCommand(command)." 5087 if (typeof override == "boolean" && myQueryCommandState(command, range) != override) { 5088 myExecCommand(command, false, override, range); 5089 5090 // "Otherwise, if override is a string, and command is not 5091 // "fontSize", and queryCommandValue(command) returns something not 5092 // equivalent to override, call execCommand(command, false, 5093 // override)." 5094 } else if (typeof override == "string" && command != "fontsize" && !areEquivalentValues(command, myQueryCommandValue(command, range), override)) { 5095 myExecCommand(command, false, override, range); 5096 5097 // "Otherwise, if override is a string; and command is "fontSize"; 5098 // and either there is a value override for "fontSize" that is not 5099 // equal to override, or there is no value override for "fontSize" 5100 // and node's effective command value for "fontSize" is not loosely 5101 // equivalent to override: call execCommand("fontSize", false, 5102 // override)." 5103 } else if (typeof override == "string" 5104 && command == "fontsize" 5105 && ((getValueOverride("fontsize", range) !== undefined 5106 && getValueOverride("fontsize", range) !== override) 5107 || (getValueOverride("fontsize", range) === undefined 5108 && !areLooselyEquivalentValues(command, getEffectiveCommandValue(node, "fontsize"), override)))) { 5109 myExecCommand("fontsize", false, override, range); 5110 5111 // "Otherwise, continue this loop from the beginning." 5112 } else { 5113 continue; 5114 } 5115 5116 // "Set node to the first editable Text node effectively contained 5117 // in the active range, if there is one." 5118 node = $_(getAllEffectivelyContainedNodes(range)).filter(isEditableTextNode)[0] || node; 5119 } 5120 5121 // "Otherwise, for each (command, override) pair in overrides, in order:" 5122 } else { 5123 for (i = 0; i < overrides.length; i++) { 5124 command = overrides[i][0]; 5125 override = overrides[i][1]; 5126 5127 // "If override is a boolean, set the state override for command to 5128 // override." 5129 if (typeof override == "boolean") { 5130 setStateOverride(command, override, range); 5131 } 5132 5133 // "If override is a string, set the value override for command to 5134 // override." 5135 if (typeof override == "string") { 5136 setValueOverride(command, override, range); 5137 } 5138 } 5139 } 5140 } 5141 5142 //@} 5143 ///// Canonical space sequences ///// 5144 //@{ 5145 5146 function canonicalSpaceSequence(n, nonBreakingStart, nonBreakingEnd) { 5147 // "If n is zero, return the empty string." 5148 if (n == 0) { 5149 return ""; 5150 } 5151 5152 // "If n is one and both non-breaking start and non-breaking end are false, 5153 // return a single space (U+0020)." 5154 if (n == 1 && !nonBreakingStart && !nonBreakingEnd) { 5155 return " "; 5156 } 5157 5158 // "If n is one, return a single non-breaking space (U+00A0)." 5159 if (n == 1) { 5160 return "\xa0"; 5161 } 5162 5163 // "Let buffer be the empty string." 5164 var buffer = ""; 5165 5166 // "If non-breaking start is true, let repeated pair be U+00A0 U+0020. 5167 // Otherwise, let it be U+0020 U+00A0." 5168 var repeatedPair; 5169 if (nonBreakingStart) { 5170 repeatedPair = "\xa0 "; 5171 } else { 5172 repeatedPair = " \xa0"; 5173 } 5174 5175 // "While n is greater than three, append repeated pair to buffer and 5176 // subtract two from n." 5177 while (n > 3) { 5178 buffer += repeatedPair; 5179 n -= 2; 5180 } 5181 5182 // "If n is three, append a three-element string to buffer depending on 5183 // non-breaking start and non-breaking end:" 5184 if (n == 3) { 5185 buffer += !nonBreakingStart && !nonBreakingEnd ? " \xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0\xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0 \xa0" : "impossible"; 5186 5187 // "Otherwise, append a two-element string to buffer depending on 5188 // non-breaking start and non-breaking end:" 5189 } else { 5190 buffer += !nonBreakingStart && !nonBreakingEnd ? "\xa0 " : nonBreakingStart && !nonBreakingEnd ? "\xa0 " : !nonBreakingStart && nonBreakingEnd ? " \xa0" : nonBreakingStart && nonBreakingEnd ? "\xa0\xa0" : "impossible"; 5191 } 5192 5193 // "Return buffer." 5194 return buffer; 5195 } 5196 5197 function canonicalizeWhitespace(node, offset) { 5198 // "If node is neither editable nor an editing host, abort these steps." 5199 if (!isEditable(node) && !isEditingHost(node)) { 5200 return; 5201 } 5202 5203 // "Let start node equal node and let start offset equal offset." 5204 var startNode = node; 5205 var startOffset = offset; 5206 5207 // "Repeat the following steps:" 5208 while (true) { 5209 // "If start node has a child in the same editing host with index start 5210 // offset minus one, set start node to that child, then set start 5211 // offset to start node's length." 5212 if (0 <= startOffset - 1 && inSameEditingHost(startNode, startNode.childNodes[startOffset - 1])) { 5213 startNode = startNode.childNodes[startOffset - 1]; 5214 startOffset = getNodeLength(startNode); 5215 5216 // "Otherwise, if start offset is zero and start node does not follow a 5217 // line break and start node's parent is in the same editing host, set 5218 // start offset to start node's index, then set start node to its 5219 // parent." 5220 } else if (startOffset == 0 && !followsLineBreak(startNode) && inSameEditingHost(startNode, startNode.parentNode)) { 5221 startOffset = Dom.getIndexInParent(startNode); 5222 startNode = startNode.parentNode; 5223 5224 // "Otherwise, if start node is a Text node and its parent's resolved 5225 // value for "white-space" is neither "pre" nor "pre-wrap" and start 5226 // offset is not zero and the (start offset − 1)st element of start 5227 // node's data is a space (0x0020) or non-breaking space (0x00A0), 5228 // subtract one from start offset." 5229 } 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])) { 5230 startOffset--; 5231 5232 // "Otherwise, break from this loop." 5233 } else { 5234 break; 5235 } 5236 } 5237 5238 // "Let end node equal start node and end offset equal start offset." 5239 var endNode = startNode; 5240 var endOffset = startOffset; 5241 5242 // "Let length equal zero." 5243 var length = 0; 5244 5245 // "Let follows space be false." 5246 var followsSpace = false; 5247 5248 // "Repeat the following steps:" 5249 while (true) { 5250 // "If end node has a child in the same editing host with index end 5251 // offset, set end node to that child, then set end offset to zero." 5252 if (endOffset < endNode.childNodes.length && inSameEditingHost(endNode, endNode.childNodes[endOffset])) { 5253 endNode = endNode.childNodes[endOffset]; 5254 endOffset = 0; 5255 5256 // "Otherwise, if end offset is end node's length and end node does not 5257 // precede a line break and end node's parent is in the same editing 5258 // host, set end offset to one plus end node's index, then set end node 5259 // to its parent." 5260 } else if (endOffset == getNodeLength(endNode) && !precedesLineBreak(endNode) && inSameEditingHost(endNode, endNode.parentNode)) { 5261 endOffset = 1 + Dom.getIndexInParent(endNode); 5262 endNode = endNode.parentNode; 5263 5264 // "Otherwise, if end node is a Text node and its parent's resolved 5265 // value for "white-space" is neither "pre" nor "pre-wrap" and end 5266 // offset is not end node's length and the end offsetth element of 5267 // end node's data is a space (0x0020) or non-breaking space (0x00A0):" 5268 } 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])) { 5269 // "If follows space is true and the end offsetth element of end 5270 // node's data is a space (0x0020), call deleteData(end offset, 1) 5271 // on end node, then continue this loop from the beginning." 5272 if (followsSpace && " " == endNode.data[endOffset]) { 5273 endNode.deleteData(endOffset, 1); 5274 continue; 5275 } 5276 5277 // "Set follows space to true if the end offsetth element of end 5278 // node's data is a space (0x0020), false otherwise." 5279 followsSpace = " " == endNode.data[endOffset]; 5280 5281 // "Add one to end offset." 5282 endOffset++; 5283 5284 // "Add one to length." 5285 length++; 5286 5287 // "Otherwise, break from this loop." 5288 } else { 5289 break; 5290 } 5291 } 5292 5293 // "Let replacement whitespace be the canonical space sequence of length 5294 // length. non-breaking start is true if start offset is zero and start 5295 // node follows a line break, and false otherwise. non-breaking end is true 5296 // if end offset is end node's length and end node precedes a line break, 5297 // and false otherwise." 5298 var replacementWhitespace = canonicalSpaceSequence(length, startOffset == 0 && followsLineBreak(startNode), endOffset == getNodeLength(endNode) && precedesLineBreak(endNode)); 5299 5300 // "While (start node, start offset) is before (end node, end offset):" 5301 while (getPosition(startNode, startOffset, endNode, endOffset) == "before") { 5302 // "If start node has a child with index start offset, set start node 5303 // to that child, then set start offset to zero." 5304 if (startOffset < startNode.childNodes.length) { 5305 startNode = startNode.childNodes[startOffset]; 5306 startOffset = 0; 5307 5308 // "Otherwise, if start node is not a Text node or if start offset is 5309 // start node's length, set start offset to one plus start node's 5310 // index, then set start node to its parent." 5311 } else if (startNode.nodeType != $_.Node.TEXT_NODE || startOffset == getNodeLength(startNode)) { 5312 startOffset = 1 + Dom.getIndexInParent(startNode); 5313 startNode = startNode.parentNode; 5314 5315 // "Otherwise:" 5316 } else { 5317 // "Remove the first element from replacement whitespace, and let 5318 // element be that element." 5319 var element = replacementWhitespace[0]; 5320 replacementWhitespace = replacementWhitespace.slice(1); 5321 5322 // "If element is not the same as the start offsetth element of 5323 // start node's data:" 5324 if (element != startNode.data[startOffset]) { 5325 // "Call insertData(start offset, element) on start node." 5326 startNode.insertData(startOffset, element); 5327 5328 // "Call deleteData(start offset + 1, 1) on start node." 5329 startNode.deleteData(startOffset + 1, 1); 5330 } 5331 5332 // "Add one to start offset." 5333 startOffset++; 5334 } 5335 } 5336 } 5337 5338 //@} 5339 ///// Deleting the contents of a range ///// 5340 //@{ 5341 5342 function deleteContents(arg1, arg2, arg3, arg4, arg5) { 5343 // We accept several different calling conventions: 5344 // 5345 // 1) A single argument, which is a range. 5346 // 5347 // 2) Two arguments, the first being a range and the second flags. 5348 // 5349 // 3) Four arguments, the start and end of a range. 5350 // 5351 // 4) Five arguments, the start and end of a range plus flags. 5352 // 5353 // The flags argument is a dictionary that can have up to two keys, 5354 // blockMerging and stripWrappers, whose corresponding values are 5355 // interpreted as boolean. E.g., {stripWrappers: false}. 5356 var range; 5357 var flags = {}; 5358 var i; 5359 5360 if (arguments.length < 3) { 5361 range = arg1; 5362 } else { 5363 range = Aloha.createRange(); 5364 range.setStart(arg1, arg2); 5365 range.setEnd(arg3, arg4); 5366 } 5367 if (arguments.length == 2) { 5368 flags = arg2; 5369 } 5370 if (arguments.length == 5) { 5371 flags = arg5; 5372 } 5373 5374 var blockMerging = null != flags.blockMerging ? !!flags.blockMerging : true; 5375 var stripWrappers = null != flags.stripWrappers ? !!flags.stripWrappers : true; 5376 5377 // "If range is null, abort these steps and do nothing." 5378 if (!range) { 5379 return; 5380 } 5381 5382 // "Let start node, start offset, end node, and end offset be range's start 5383 // and end nodes and offsets." 5384 var startNode = range.startContainer; 5385 var startOffset = range.startOffset; 5386 var endNode = range.endContainer; 5387 var endOffset = range.endOffset; 5388 var referenceNode; 5389 5390 // "While start node has at least one child:" 5391 while (startNode.hasChildNodes()) { 5392 // "If start offset is start node's length, and start node's parent is 5393 // in the same editing host, and start node is an inline node, set 5394 // start offset to one plus the index of start node, then set start 5395 // node to its parent and continue this loop from the beginning." 5396 if (startOffset == getNodeLength(startNode) && inSameEditingHost(startNode, startNode.parentNode) && isInlineNode(startNode)) { 5397 startOffset = 1 + Dom.getIndexInParent(startNode); 5398 startNode = startNode.parentNode; 5399 continue; 5400 } 5401 5402 // "If start offset is start node's length, break from this loop." 5403 if (startOffset == getNodeLength(startNode)) { 5404 break; 5405 } 5406 5407 // "Let reference node be the child of start node with index equal to 5408 // start offset." 5409 referenceNode = startNode.childNodes[startOffset]; 5410 5411 // "If reference node is a block node or an Element with no children, 5412 // or is neither an Element nor a Text node, break from this loop." 5413 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5414 break; 5415 } 5416 5417 // "Set start node to reference node and start offset to 0." 5418 startNode = referenceNode; 5419 startOffset = 0; 5420 } 5421 5422 // "While end node has at least one child:" 5423 while (endNode.hasChildNodes()) { 5424 // "If end offset is 0, and end node's parent is in the same editing 5425 // host, and end node is an inline node, set end offset to the index of 5426 // end node, then set end node to its parent and continue this loop 5427 // from the beginning." 5428 if (endOffset == 0 && inSameEditingHost(endNode, endNode.parentNode) && isInlineNode(endNode)) { 5429 endOffset = Dom.getIndexInParent(endNode); 5430 endNode = endNode.parentNode; 5431 continue; 5432 } 5433 5434 // "If end offset is 0, break from this loop." 5435 if (endOffset == 0) { 5436 break; 5437 } 5438 5439 // "Let reference node be the child of end node with index equal to end 5440 // offset minus one." 5441 referenceNode = endNode.childNodes[endOffset - 1]; 5442 5443 // "If reference node is a block node or an Element with no children, 5444 // or is neither an Element nor a Text node, break from this loop." 5445 if (isBlockNode(referenceNode) || (referenceNode.nodeType == $_.Node.ELEMENT_NODE && !referenceNode.hasChildNodes()) || (referenceNode.nodeType != $_.Node.ELEMENT_NODE && referenceNode.nodeType != $_.Node.TEXT_NODE)) { 5446 break; 5447 } 5448 5449 // "Set end node to reference node and end offset to the length of 5450 // reference node." 5451 endNode = referenceNode; 5452 endOffset = getNodeLength(referenceNode); 5453 } 5454 5455 // "If (end node, end offset) is not after (start node, start offset), set 5456 // range's end to its start and abort these steps." 5457 if (getPosition(endNode, endOffset, startNode, startOffset) !== "after") { 5458 range.setEnd(range.startContainer, range.startOffset); 5459 return range; 5460 } 5461 5462 // "If start node is a Text node and start offset is 0, set start offset to 5463 // the index of start node, then set start node to its parent." 5464 // Commented out for unknown reason 5465 //if (startNode.nodeType == $_.Node.TEXT_NODE && startOffset == 0 && startNode != endNode) { 5466 // startOffset = Dom.getIndexInParent(startNode); 5467 // startNode = startNode.parentNode; 5468 //} 5469 5470 // "If end node is a Text node and end offset is its length, set end offset 5471 // to one plus the index of end node, then set end node to its parent." 5472 if (endNode.nodeType == $_.Node.TEXT_NODE && endOffset == getNodeLength(endNode) && startNode != endNode) { 5473 endOffset = 1 + Dom.getIndexInParent(endNode); 5474 endNode = endNode.parentNode; 5475 } 5476 5477 // "Set range's start to (start node, start offset) and its end to (end 5478 // node, end offset)." 5479 range.setStart(startNode, startOffset); 5480 range.setEnd(endNode, endOffset); 5481 5482 // "Let start block be the start node of range." 5483 var startBlock = range.startContainer; 5484 5485 // "While start block's parent is in the same editing host and start block 5486 // is an inline node, set start block to its parent." 5487 while (inSameEditingHost(startBlock, startBlock.parentNode) && isInlineNode(startBlock)) { 5488 startBlock = startBlock.parentNode; 5489 } 5490 5491 // "If start block is neither a block node nor an editing host, or "span" 5492 // is not an allowed child of start block, or start block is a td or th, 5493 // set start block to null." 5494 if ((!isBlockNode(startBlock) && !isEditingHost(startBlock)) || !isAllowedChild("span", startBlock) || isHtmlElementInArray(startBlock, ["td", "th"])) { 5495 startBlock = null; 5496 } 5497 5498 // "Let end block be the end node of range." 5499 var endBlock = range.endContainer; 5500 5501 // "While end block's parent is in the same editing host and end block is 5502 // an inline node, set end block to its parent." 5503 while (inSameEditingHost(endBlock, endBlock.parentNode) && isInlineNode(endBlock)) { 5504 endBlock = endBlock.parentNode; 5505 } 5506 5507 // "If end block is neither a block node nor an editing host, or "span" is 5508 // not an allowed child of end block, or end block is a td or th, set end 5509 // block to null." 5510 if ((!isBlockNode(endBlock) && !isEditingHost(endBlock)) || !isAllowedChild("span", endBlock) || isHtmlElementInArray(endBlock, ["td", "th"])) { 5511 endBlock = null; 5512 } 5513 5514 // "Record current states and values, and let overrides be the result." 5515 var overrides = recordCurrentStatesAndValues(range); 5516 var parent_; 5517 // "If start node and end node are the same, and start node is an editable 5518 // Text node:" 5519 if (startNode == endNode && isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5520 // "Let parent be the parent of node." 5521 parent_ = startNode.parentNode; 5522 5523 // "Call deleteData(start offset, end offset − start offset) on start 5524 // node." 5525 startNode.deleteData(startOffset, endOffset - startOffset); 5526 5527 // if deleting the text moved two spaces together, we replace the left one by a , which makes the two spaces a visible 5528 // two space sequence 5529 if (startOffset > 0 && startNode.data.substr(startOffset - 1, 1) === ' ' && startOffset < startNode.data.length && startNode.data.substr(startOffset, 1) === ' ') { 5530 startNode.replaceData(startOffset - 1, 1, '\xa0'); 5531 } 5532 5533 // "Canonicalize whitespace at (start node, start offset)." 5534 canonicalizeWhitespace(startNode, startOffset); 5535 5536 // "Set range's end to its start." 5537 // Ok, also set the range's start to its start, because modifying the text 5538 // might have somehow corrupted the range 5539 range.setStart(range.startContainer, range.startOffset); 5540 range.setEnd(range.startContainer, range.startOffset); 5541 5542 // "Restore states and values from overrides." 5543 restoreStatesAndValues(overrides, range); 5544 5545 // "If parent is editable or an editing host, is not an inline node, 5546 // and has no children, call createElement("br") on the context object 5547 // and append the result as the last child of parent." 5548 // only do this, if the offsetHeight is 0 5549 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5550 ensureContainerEditable(parent_); 5551 } 5552 5553 // "Abort these steps." 5554 return range; 5555 } 5556 5557 // "If start node is an editable Text node, call deleteData() on it, with 5558 // start offset as the first argument and (length of start node − start 5559 // offset) as the second argument." 5560 if (isEditable(startNode) && startNode.nodeType == $_.Node.TEXT_NODE) { 5561 startNode.deleteData(startOffset, getNodeLength(startNode) - startOffset); 5562 } 5563 5564 // "Let node list be a list of nodes, initially empty." 5565 // 5566 // "For each node contained in range, append node to node list if the last 5567 // member of node list (if any) is not an ancestor of node; node is 5568 // editable; and node is not a thead, tbody, tfoot, tr, th, or td." 5569 var nodeList = getContainedNodes( 5570 range, 5571 function (node) { 5572 return isEditable(node) && !isHtmlElementInArray(node, ["thead", "tbody", "tfoot", "tr", "th", "td"]); 5573 } 5574 ); 5575 5576 // "For each node in node list:" 5577 for (i = 0; i < nodeList.length; i++) { 5578 var node = nodeList[i]; 5579 5580 // "Let parent be the parent of node." 5581 parent_ = node.parentNode; 5582 5583 // "Remove node from parent." 5584 parent_.removeChild(node); 5585 5586 // "If strip wrappers is true or parent is not an ancestor container of 5587 // start node, while parent is an editable inline node with length 0, 5588 // let grandparent be the parent of parent, then remove parent from 5589 // grandparent, then set parent to grandparent." 5590 if (stripWrappers || (!isAncestor(parent_, startNode) && parent_ != startNode)) { 5591 while (isEditable(parent_) && isInlineNode(parent_) && getNodeLength(parent_) == 0) { 5592 var grandparent = parent_.parentNode; 5593 grandparent.removeChild(parent_); 5594 parent_ = grandparent; 5595 } 5596 } 5597 5598 // "If parent is editable or an editing host, is not an inline node, 5599 // and has no children, call createElement("br") on the context object 5600 // and append the result as the last child of parent." 5601 // only do this, if the offsetHeight is 0 5602 if ((isEditable(parent_) || isEditingHost(parent_)) && !isInlineNode(parent_)) { 5603 ensureContainerEditable(parent_); 5604 } 5605 } 5606 5607 // "If end node is an editable Text node, call deleteData(0, end offset) on 5608 // it." 5609 if (isEditable(endNode) && endNode.nodeType == $_.Node.TEXT_NODE) { 5610 endNode.deleteData(0, endOffset); 5611 } 5612 5613 // "Canonicalize whitespace at range's start." 5614 canonicalizeWhitespace(range.startContainer, range.startOffset); 5615 5616 // "Canonicalize whitespace at range's end." 5617 canonicalizeWhitespace(range.endContainer, range.endOffset); 5618 5619 // A reference to the position where a node is removed. 5620 var pos; 5621 5622 // "If block merging is false, or start block or end block is null, or 5623 // start block is not in the same editing host as end block, or start block 5624 // and end block are the same:" 5625 if (!blockMerging || !startBlock || !endBlock || !inSameEditingHost(startBlock, endBlock) || startBlock == endBlock) { 5626 // "Set range's end to its start." 5627 range.setEnd(range.startContainer, range.startOffset); 5628 5629 // Calling delete on the give markup: 5630 // <editable><block><br>[]</block></editable> 5631 // should result in: 5632 // <editable>[]</editable> 5633 var block = startBlock || endBlock; 5634 if (isEmptyOnlyChildOfEditingHost(block)) { 5635 pos = removeNode(block); 5636 range.setStart(pos.node, pos.offset); 5637 range.setEnd(pos.node, pos.offset); 5638 } 5639 5640 // "Restore states and values from overrides." 5641 restoreStatesAndValues(overrides, range); 5642 5643 // "Abort these steps." 5644 return range; 5645 } 5646 5647 // "If start block has one child, which is a collapsed block prop, remove 5648 // its child from it." 5649 if (startBlock.children.length == 1 && isCollapsedBlockProp(startBlock.firstChild)) { 5650 startBlock.removeChild(startBlock.firstChild); 5651 } 5652 5653 // "If end block has one child, which is a collapsed block prop, remove its 5654 // child from it." 5655 if (endBlock.children.length == 1 && isCollapsedBlockProp(endBlock.firstChild)) { 5656 endBlock.removeChild(endBlock.firstChild); 5657 } 5658 5659 var values; 5660 // "If start block is an ancestor of end block:" 5661 if (isAncestor(startBlock, endBlock)) { 5662 // "Let reference node be end block." 5663 referenceNode = endBlock; 5664 5665 // "While reference node is not a child of start block, set reference 5666 // node to its parent." 5667 while (referenceNode.parentNode != startBlock) { 5668 referenceNode = referenceNode.parentNode; 5669 } 5670 5671 // "Set the start and end of range to (start block, index of reference 5672 // node)." 5673 range.setStart(startBlock, Dom.getIndexInParent(referenceNode)); 5674 range.setEnd(startBlock, Dom.getIndexInParent(referenceNode)); 5675 5676 // "If end block has no children:" 5677 if (!endBlock.hasChildNodes()) { 5678 // "While end block is editable and is the only child of its parent 5679 // and is not a child of start block, let parent equal end block, 5680 // then remove end block from parent, then set end block to 5681 // parent." 5682 while (isEditable(endBlock) && endBlock.parentNode.childNodes.length == 1 && endBlock.parentNode != startBlock) { 5683 parent_ = endBlock; 5684 parent_.removeChild(endBlock); 5685 endBlock = parent_; 5686 } 5687 5688 // "If end block is editable and is not an inline node, and its 5689 // previousSibling and nextSibling are both inline nodes, call 5690 // createElement("br") on the context object and insert it into end 5691 // block's parent immediately after end block." 5692 5693 if (isEditable(endBlock) && !isInlineNode(endBlock) && isInlineNode(endBlock.previousSibling) && isInlineNode(endBlock.nextSibling)) { 5694 endBlock.parentNode.insertBefore(document.createElement("br"), endBlock.nextSibling); 5695 } 5696 5697 // "If end block is editable, remove it from its parent." 5698 if (isEditable(endBlock)) { 5699 endBlock.parentNode.removeChild(endBlock); 5700 } 5701 5702 // "Restore states and values from overrides." 5703 restoreStatesAndValues(overrides, range); 5704 5705 // "Abort these steps." 5706 return range; 5707 } 5708 5709 // "If end block's firstChild is not an inline node, restore states and 5710 5711 // values from overrides, then abort these steps." 5712 if (!isInlineNode(endBlock.firstChild)) { 5713 restoreStatesAndValues(overrides, range); 5714 return range; 5715 } 5716 5717 // "Let children be a list of nodes, initially empty." 5718 var children = []; 5719 5720 // "Append the first child of end block to children." 5721 children.push(endBlock.firstChild); 5722 5723 // "While children's last member is not a br, and children's last 5724 // member's nextSibling is an inline node, append children's last 5725 // member's nextSibling to children." 5726 while (!isNamedHtmlElement(children[children.length - 1], "br") && isInlineNode(children[children.length - 1].nextSibling)) { 5727 children.push(children[children.length - 1].nextSibling); 5728 } 5729 5730 // "Record the values of children, and let values be the result." 5731 values = recordValues(children); 5732 5733 // "While children's first member's parent is not start block, split 5734 // the parent of children." 5735 while (children[0].parentNode != startBlock) { 5736 splitParent(children, range); 5737 } 5738 5739 // "If children's first member's previousSibling is an editable br, 5740 // remove that br from its parent." 5741 if (isEditable(children[0].previousSibling) && isNamedHtmlElement(children[0].previousSibling, "br")) { 5742 children[0].parentNode.removeChild(children[0].previousSibling); 5743 } 5744 5745 5746 // "Otherwise, if start block is a descendant of end block:" 5747 } else if (isDescendant(startBlock, endBlock)) { 5748 // "Set the start and end of range to (start block, length of start 5749 // block)." 5750 range.setStart(startBlock, getNodeLength(startBlock)); 5751 range.setEnd(startBlock, getNodeLength(startBlock)); 5752 5753 // "Let reference node be start block." 5754 referenceNode = startBlock; 5755 5756 // "While reference node is not a child of end block, set reference 5757 // node to its parent." 5758 while (referenceNode.parentNode != endBlock) { 5759 referenceNode = referenceNode.parentNode; 5760 } 5761 5762 // "If reference node's nextSibling is an inline node and start block's 5763 // lastChild is a br, remove start block's lastChild from it." 5764 if (isInlineNode(referenceNode.nextSibling) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5765 startBlock.removeChild(startBlock.lastChild); 5766 } 5767 5768 // "Let nodes to move be a list of nodes, initially empty." 5769 var nodesToMove = []; 5770 5771 // "If reference node's nextSibling is neither null nor a br nor a 5772 // block node, append it to nodes to move." 5773 if (referenceNode.nextSibling && !isNamedHtmlElement(referenceNode.nextSibling, "br") && !isBlockNode(referenceNode.nextSibling)) { 5774 nodesToMove.push(referenceNode.nextSibling); 5775 } 5776 5777 // "While nodes to move is nonempty and its last member's nextSibling 5778 // is neither null nor a br nor a block node, append it to nodes to 5779 // move." 5780 if (nodesToMove.length && nodesToMove[nodesToMove.length - 1].nextSibling && !isNamedHtmlElement(nodesToMove[nodesToMove.length - 1].nextSibling, "br") && !isBlockNode(nodesToMove[nodesToMove.length - 1].nextSibling)) { 5781 nodesToMove.push(nodesToMove[nodesToMove.length - 1].nextSibling); 5782 } 5783 5784 // "Record the values of nodes to move, and let values be the result." 5785 values = recordValues(nodesToMove); 5786 5787 // "For each node in nodes to move, append node as the last child of 5788 // start block, preserving ranges." 5789 $_(nodesToMove).forEach(function (node) { 5790 movePreservingRanges(node, startBlock, -1, range); 5791 }); 5792 5793 // "If the nextSibling of reference node is a br, remove it from its 5794 // parent." 5795 if (isNamedHtmlElement(referenceNode.nextSibling, "br")) { 5796 referenceNode.parentNode.removeChild(referenceNode.nextSibling); 5797 } 5798 5799 // "Otherwise:" 5800 } else { 5801 // "Set the start and end of range to (start block, length of start 5802 // block)." 5803 range.setStart(startBlock, getNodeLength(startBlock)); 5804 range.setEnd(startBlock, getNodeLength(startBlock)); 5805 5806 // "If end block's firstChild is an inline node and start block's 5807 // lastChild is a br, remove start block's lastChild from it." 5808 if (isInlineNode(endBlock.firstChild) && isNamedHtmlElement(startBlock.lastChild, "br")) { 5809 startBlock.removeChild(startBlock.lastChild); 5810 } 5811 5812 // "Record the values of end block's children, and let values be the 5813 // result." 5814 values = recordValues([].slice.call(toArray(endBlock.childNodes))); 5815 5816 // "While end block has children, append the first child of end block 5817 // to start block, preserving ranges." 5818 while (endBlock.hasChildNodes()) { 5819 movePreservingRanges(endBlock.firstChild, startBlock, -1, range); 5820 } 5821 5822 // "While end block has no children, let parent be the parent of end 5823 // block, then remove end block from parent, then set end block to 5824 // parent." 5825 while (!endBlock.hasChildNodes()) { 5826 parent_ = endBlock.parentNode; 5827 parent_.removeChild(endBlock); 5828 5829 endBlock = parent_; 5830 } 5831 } 5832 5833 // "Restore the values from values." 5834 restoreValues(values, range); 5835 5836 // Because otherwise calling deleteContents() with the given selection: 5837 // 5838 // <editable><block>[foo</block><block>bar]</block></editable> 5839 // 5840 // would result in: 5841 // 5842 // <editable><block>[]<br /></block></editable> 5843 // 5844 // instead of: 5845 // 5846 // <editable>[]</editable> 5847 // 5848 // Therefore, the below makes it possible to completely empty contents 5849 // of editing hosts via operations like CTRL+A, DEL. 5850 // 5851 // If startBlock is empty, and startBlock is the immediate and only 5852 // child of its parent editing host, then remove startBlock and collapse 5853 // the selection at the beginning of the editing post. 5854 if (isEmptyOnlyChildOfEditingHost(startBlock)) { 5855 pos = removeNode(startBlock); 5856 range.setStart(pos.node, pos.offset); 5857 range.setEnd(pos.node, pos.offset); 5858 startBlock = pos.node; 5859 } 5860 5861 // "If start block has no children, call createElement("br") on the context 5862 // object and append the result as the last child of start block." 5863 ensureContainerEditable(startBlock); 5864 5865 // "Restore states and values from overrides." 5866 restoreStatesAndValues(overrides, range); 5867 5868 return range; 5869 } 5870 5871 // "To remove a node node while preserving its descendants, split the parent of 5872 // node's children if it has any. If it has no children, instead remove it from 5873 // its parent." 5874 function removePreservingDescendants(node, range) { 5875 if (node.hasChildNodes()) { 5876 splitParent([].slice.call(toArray(node.childNodes)), range); 5877 } else { 5878 node.parentNode.removeChild(node); 5879 } 5880 } 5881 5882 //@} 5883 ///// Indenting and outdenting ///// 5884 //@{ 5885 5886 function cleanLists(node, range) { 5887 // remove any whitespace nodes around list nodes 5888 if (node) { 5889 jQuery(node).find('ul,ol,li').each(function () { 5890 jQuery(this).contents().each(function () { 5891 if (isWhitespaceNode(this)) { 5892 var index = Dom.getIndexInParent(this); 5893 5894 // if the range points to somewhere behind the removed text node, we reduce the offset 5895 if (range.startContainer === this.parentNode && range.startOffset > index) { 5896 range.startOffset--; 5897 } else if (range.startContainer === this) { 5898 // the range starts in the removed text node, let it start right before 5899 range.startContainer = this.parentNode; 5900 range.startOffset = index; 5901 } 5902 // same thing for end of the range 5903 if (range.endContainer === this.parentNode && range.endOffset > index) { 5904 range.endOffset--; 5905 } else if (range.endContainer === this) { 5906 range.endContainer = this.parentNode; 5907 range.endOffset = index; 5908 } 5909 // finally remove the whitespace node 5910 jQuery(this).remove(); 5911 } 5912 }); 5913 }); 5914 } 5915 } 5916 5917 5918 //@} 5919 ///// Indenting and outdenting ///// 5920 //@{ 5921 5922 function indentNodes(nodeList, range) { 5923 // "If node list is empty, do nothing and abort these steps." 5924 if (!nodeList.length) { 5925 return; 5926 } 5927 5928 // "Let first node be the first member of node list." 5929 var firstNode = nodeList[0]; 5930 5931 // "If first node's parent is an ol or ul:" 5932 if (isHtmlElementInArray(firstNode.parentNode, ["OL", "UL"])) { 5933 // "Let tag be the local name of the parent of first node." 5934 var tag = firstNode.parentNode.tagName; 5935 5936 // "Wrap node list, with sibling criteria returning true for an HTML 5937 // element with local name tag and false otherwise, and new parent 5938 // instructions returning the result of calling createElement(tag) on 5939 // the ownerDocument of first node." 5940 5941 wrap( 5942 nodeList, 5943 function (node) { 5944 return isHtmlElement_obsolete(node, tag); 5945 }, 5946 function () { 5947 return firstNode.ownerDocument.createElement(tag); 5948 }, 5949 range 5950 ); 5951 5952 // "Abort these steps." 5953 return; 5954 } 5955 5956 // "Wrap node list, with sibling criteria returning true for a simple 5957 // indentation element and false otherwise, and new parent instructions 5958 // returning the result of calling createElement("blockquote") on the 5959 // ownerDocument of first node. Let new parent be the result." 5960 var newParent = wrap( 5961 nodeList, 5962 function (node) { 5963 return isSimpleIndentationElement(node); 5964 }, 5965 function () { 5966 return firstNode.ownerDocument.createElement("blockquote"); 5967 }, 5968 range 5969 ); 5970 5971 // "Fix disallowed ancestors of new parent." 5972 fixDisallowedAncestors(newParent, range); 5973 } 5974 5975 function outdentNode(node, range) { 5976 // "If node is not editable, abort these steps." 5977 if (!isEditable(node)) { 5978 return; 5979 } 5980 5981 // "If node is a simple indentation element, remove node, preserving its 5982 // descendants. Then abort these steps." 5983 if (isSimpleIndentationElement(node)) { 5984 removePreservingDescendants(node, range); 5985 return; 5986 } 5987 5988 // "If node is an indentation element:" 5989 if (isIndentationElement(node)) { 5990 // "Unset the class and dir attributes of node, if any." 5991 node.removeAttribute("class"); 5992 node.removeAttribute("dir"); 5993 5994 // "Unset the margin, padding, and border CSS properties of node." 5995 node.style.margin = ""; 5996 node.style.padding = ""; 5997 node.style.border = ""; 5998 if (node.getAttribute("style") == "") { 5999 node.removeAttribute("style"); 6000 } 6001 6002 // "Set the tag name of node to "div"." 6003 setTagName(node, "div", range); 6004 6005 // "Abort these steps." 6006 return; 6007 } 6008 6009 // "Let current ancestor be node's parent." 6010 var currentAncestor = node.parentNode; 6011 6012 // "Let ancestor list be a list of nodes, initially empty." 6013 var ancestorList = []; 6014 6015 // "While current ancestor is an editable Element that is neither a simple 6016 // indentation element nor an ol nor a ul, append current ancestor to 6017 // ancestor list and then set current ancestor to its parent." 6018 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isSimpleIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6019 ancestorList.push(currentAncestor); 6020 currentAncestor = currentAncestor.parentNode; 6021 } 6022 6023 // "If current ancestor is not an editable simple indentation element:" 6024 if (!isEditable(currentAncestor) || !isSimpleIndentationElement(currentAncestor)) { 6025 // "Let current ancestor be node's parent." 6026 currentAncestor = node.parentNode; 6027 6028 // "Let ancestor list be the empty list." 6029 ancestorList = []; 6030 6031 // "While current ancestor is an editable Element that is neither an 6032 // indentation element nor an ol nor a ul, append current ancestor to 6033 // ancestor list and then set current ancestor to its parent." 6034 while (isEditable(currentAncestor) && currentAncestor.nodeType == $_.Node.ELEMENT_NODE && !isIndentationElement(currentAncestor) && !isHtmlElementInArray(currentAncestor, ["ol", "ul"])) { 6035 ancestorList.push(currentAncestor); 6036 currentAncestor = currentAncestor.parentNode; 6037 } 6038 } 6039 6040 // "If node is an ol or ul and current ancestor is not an editable 6041 // indentation element:" 6042 if (isHtmlElementInArray(node, ["OL", "UL"]) && (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor))) { 6043 // "Unset the reversed, start, and type attributes of node, if any are 6044 // set." 6045 node.removeAttribute("reversed"); 6046 node.removeAttribute("start"); 6047 node.removeAttribute("type"); 6048 6049 // "Let children be the children of node." 6050 var children = [].slice.call(toArray(node.childNodes)); 6051 6052 // "If node has attributes, and its parent is not an ol or ul, set the 6053 // tag name of node to "div"." 6054 if (node.attributes.length && !isHtmlElementInArray(node.parentNode, ["OL", "UL"])) { 6055 setTagName(node, "div", range); 6056 6057 // "Otherwise:" 6058 } else { 6059 // "Record the values of node's children, and let values be the 6060 // result." 6061 var values = recordValues([].slice.call(toArray(node.childNodes))); 6062 6063 // "Remove node, preserving its descendants." 6064 removePreservingDescendants(node, range); 6065 6066 // "Restore the values from values." 6067 restoreValues(values, range); 6068 } 6069 6070 // "Fix disallowed ancestors of each member of children." 6071 var i; 6072 for (i = 0; i < children.length; i++) { 6073 fixDisallowedAncestors(children[i], range); 6074 } 6075 6076 // "Abort these steps." 6077 return; 6078 } 6079 6080 // "If current ancestor is not an editable indentation element, abort these 6081 // steps." 6082 if (!isEditable(currentAncestor) || !isIndentationElement(currentAncestor)) { 6083 return; 6084 } 6085 6086 // "Append current ancestor to ancestor list." 6087 ancestorList.push(currentAncestor); 6088 6089 // "Let original ancestor be current ancestor." 6090 var originalAncestor = currentAncestor; 6091 6092 // "While ancestor list is not empty:" 6093 while (ancestorList.length) { 6094 // "Let current ancestor be the last member of ancestor list." 6095 // 6096 // "Remove the last member of ancestor list." 6097 currentAncestor = ancestorList.pop(); 6098 6099 // "Let target be the child of current ancestor that is equal to either 6100 // node or the last member of ancestor list." 6101 var target = node.parentNode == currentAncestor ? node : ancestorList[ancestorList.length - 1]; 6102 6103 // "If target is an inline node that is not a br, and its nextSibling 6104 // is a br, remove target's nextSibling from its parent." 6105 if (isInlineNode(target) && !isNamedHtmlElement(target, 'BR') && isNamedHtmlElement(target.nextSibling, "BR")) { 6106 target.parentNode.removeChild(target.nextSibling); 6107 } 6108 6109 // "Let preceding siblings be the preceding siblings of target, and let 6110 // following siblings be the following siblings of target." 6111 var precedingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 0, Dom.getIndexInParent(target)); 6112 var followingSiblings = [].slice.call(toArray(currentAncestor.childNodes), 1 + Dom.getIndexInParent(target)); 6113 6114 // "Indent preceding siblings." 6115 indentNodes(precedingSiblings, range); 6116 6117 // "Indent following siblings." 6118 indentNodes(followingSiblings, range); 6119 } 6120 6121 // "Outdent original ancestor." 6122 outdentNode(originalAncestor, range); 6123 } 6124 6125 6126 //@} 6127 ///// Toggling lists ///// 6128 //@{ 6129 6130 function toggleLists(tagName, range) { 6131 // "Let mode be "disable" if the selection's list state is tag name, and 6132 // "enable" otherwise." 6133 var mode = getSelectionListState() == tagName ? "disable" : "enable"; 6134 6135 tagName = tagName.toUpperCase(); 6136 6137 // "Let other tag name be "ol" if tag name is "ul", and "ul" if tag name is 6138 // "ol"." 6139 var otherTagName = tagName == "OL" ? "UL" : "OL"; 6140 6141 // "Let items be a list of all lis that are ancestor containers of the 6142 // range's start and/or end node." 6143 // 6144 // It's annoying to get this in tree order using functional stuff without 6145 // doing getDescendants(document), which is slow, so I do it imperatively. 6146 var items = []; 6147 (function () { 6148 var ancestorContainer; 6149 for (ancestorContainer = range.endContainer; 6150 ancestorContainer != range.commonAncestorContainer; 6151 ancestorContainer = ancestorContainer.parentNode) { 6152 if (isNamedHtmlElement(ancestorContainer, "li")) { 6153 items.unshift(ancestorContainer); 6154 } 6155 } 6156 for (ancestorContainer = range.startContainer; 6157 ancestorContainer; 6158 ancestorContainer = ancestorContainer.parentNode) { 6159 if (isNamedHtmlElement(ancestorContainer, "li")) { 6160 items.unshift(ancestorContainer); 6161 } 6162 } 6163 }()); 6164 6165 // "For each item in items, normalize sublists of item." 6166 $_(items).forEach(function (thisArg) { 6167 normalizeSublists(thisArg, range); 6168 }); 6169 6170 // "Block-extend the range, and let new range be the result." 6171 var newRange = blockExtend(range); 6172 6173 // "If mode is "enable", then let lists to convert consist of every 6174 // editable HTML element with local name other tag name that is contained 6175 // in new range, and for every list in lists to convert:" 6176 if (mode == "enable") { 6177 $_(getAllContainedNodes(newRange, function (node) { 6178 return isEditable(node) && isHtmlElement_obsolete(node, otherTagName); 6179 })).forEach(function (list) { 6180 // "If list's previousSibling or nextSibling is an editable HTML 6181 // element with local name tag name:" 6182 if ((isEditable(list.previousSibling) && isHtmlElement_obsolete(list.previousSibling, tagName)) || (isEditable(list.nextSibling) && isHtmlElement_obsolete(list.nextSibling, tagName))) { 6183 // "Let children be list's children." 6184 var children = [].slice.call(toArray(list.childNodes)); 6185 6186 // "Record the values of children, and let values be the 6187 // result." 6188 var values = recordValues(children); 6189 6190 // "Split the parent of children." 6191 splitParent(children, range); 6192 6193 // "Wrap children, with sibling criteria returning true for an 6194 // HTML element with local name tag name and false otherwise." 6195 wrap( 6196 children, 6197 function (node) { 6198 return isHtmlElement_obsolete(node, tagName); 6199 }, 6200 function () { 6201 return null; 6202 }, 6203 range 6204 ); 6205 6206 // "Restore the values from values." 6207 restoreValues(values, range); 6208 6209 // "Otherwise, set the tag name of list to tag name." 6210 } else { 6211 setTagName(list, tagName, range); 6212 } 6213 }); 6214 } 6215 6216 // "Let node list be a list of nodes, initially empty." 6217 // 6218 // "For each node node contained in new range, if node is editable; the 6219 // last member of node list (if any) is not an ancestor of node; node 6220 // is not an indentation element; and either node is an ol or ul, or its 6221 // parent is an ol or ul, or it is an allowed child of "li"; then append 6222 // node to node list." 6223 var nodeList = getContainedNodes(newRange, function (node) { 6224 return isEditable(node) && !isIndentationElement(node) && (isHtmlElementInArray(node, ["OL", "UL"]) || isHtmlElementInArray(node.parentNode, ["OL", "UL"]) || isAllowedChild(node, "li")); 6225 }); 6226 6227 // "If mode is "enable", remove from node list any ol or ul whose parent is 6228 // not also an ol or ul." 6229 if (mode == "enable") { 6230 nodeList = $_(nodeList).filter(function (node) { 6231 return !isHtmlElementInArray(node, ["ol", "ul"]) || isHtmlElementInArray(node.parentNode, ["ol", "ul"]); 6232 }); 6233 } 6234 6235 // "If mode is "disable", then while node list is not empty:" 6236 var sublist, values; 6237 6238 function createLi() { 6239 return document.createElement("li"); 6240 } 6241 6242 function isOlUl(node) { 6243 return isHtmlElementInArray(node, ["ol", "ul"]); 6244 } 6245 6246 function makeIsElementPred(tagName) { 6247 return function (node) { 6248 return isHtmlElement_obsolete(node, tagName); 6249 }; 6250 } 6251 6252 function makeCreateElement(tagName) { 6253 return function () { 6254 return document.createElement(tagName); 6255 }; 6256 } 6257 6258 function makeCreateElementSublist(tagName, sublist, range) { 6259 return function () { 6260 // "If sublist's first member's parent is not an editable 6261 // simple indentation element, or sublist's first member's 6262 // parent's previousSibling is not an editable HTML element 6263 // with local name tag name, call createElement(tag name) 6264 // on the context object and return the result." 6265 if (!isEditable(sublist[0].parentNode) || !isSimpleIndentationElement(sublist[0].parentNode) || !isEditable(sublist[0].parentNode.previousSibling) || !isHtmlElement_obsolete(sublist[0].parentNode.previousSibling, tagName)) { 6266 return document.createElement(tagName); 6267 } 6268 6269 6270 // "Let list be sublist's first member's parent's 6271 // previousSibling." 6272 var list = sublist[0].parentNode.previousSibling; 6273 6274 // "Normalize sublists of list's lastChild." 6275 normalizeSublists(list.lastChild, range); 6276 6277 // "If list's lastChild is not an editable HTML element 6278 // with local name tag name, call createElement(tag name) 6279 // on the context object, and append the result as the last 6280 // child of list." 6281 if (!isEditable(list.lastChild) || !isHtmlElement_obsolete(list.lastChild, tagName)) { 6282 list.appendChild(document.createElement(tagName)); 6283 } 6284 6285 // "Return the last child of list." 6286 return list.lastChild; 6287 }; 6288 } 6289 6290 if (mode == "disable") { 6291 while (nodeList.length) { 6292 // "Let sublist be an empty list of nodes." 6293 sublist = []; 6294 6295 // "Remove the first member from node list and append it to 6296 // sublist." 6297 sublist.push(nodeList.shift()); 6298 6299 // "If the first member of sublist is an HTML element with local 6300 // name tag name, outdent it and continue this loop from the 6301 // beginning." 6302 if (isHtmlElement_obsolete(sublist[0], tagName)) { 6303 outdentNode(sublist[0], range); 6304 continue; 6305 } 6306 6307 // "While node list is not empty, and the first member of node list 6308 // is the nextSibling of the last member of sublist and is not an 6309 // HTML element with local name tag name, remove the first member 6310 // from node list and append it to sublist." 6311 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElement_obsolete(nodeList[0], tagName)) { 6312 sublist.push(nodeList.shift()); 6313 } 6314 6315 // "Record the values of sublist, and let values be the result." 6316 values = recordValues(sublist); 6317 6318 // "Split the parent of sublist." 6319 splitParent(sublist, range); 6320 6321 // "Fix disallowed ancestors of each member of sublist." 6322 var i; 6323 for (i = 0; i < sublist.length; i++) { 6324 fixDisallowedAncestors(sublist[i], range); 6325 } 6326 6327 // "Restore the values from values." 6328 restoreValues(values, range); 6329 } 6330 6331 // "Otherwise, while node list is not empty:" 6332 } else { 6333 while (nodeList.length) { 6334 // "Let sublist be an empty list of nodes." 6335 sublist = []; 6336 6337 // "While either sublist is empty, or node list is not empty and 6338 // its first member is the nextSibling of sublist's last member:" 6339 while (!sublist.length || (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling)) { 6340 // "If node list's first member is a p or div, set the tag name 6341 // of node list's first member to "li", and append the result 6342 // to sublist. Remove the first member from node list." 6343 if (isHtmlElementInArray(nodeList[0], ["p", "div"])) { 6344 sublist.push(setTagName(nodeList[0], "li", range)); 6345 nodeList.shift(); 6346 6347 // "Otherwise, if the first member of node list is an li or ol 6348 // or ul, remove it from node list and append it to sublist." 6349 } else if (isHtmlElementInArray(nodeList[0], ["li", "ol", "ul"])) { 6350 sublist.push(nodeList.shift()); 6351 6352 // "Otherwise:" 6353 } else { 6354 // "Let nodes to wrap be a list of nodes, initially empty." 6355 var nodesToWrap = []; 6356 6357 // "While nodes to wrap is empty, or node list is not empty 6358 // and its first member is the nextSibling of nodes to 6359 // wrap's last member and the first member of node list is 6360 // an inline node and the last member of nodes to wrap is 6361 // an inline node other than a br, remove the first member 6362 // from node list and append it to nodes to wrap." 6363 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"))) { 6364 nodesToWrap.push(nodeList.shift()); 6365 } 6366 6367 // "Wrap nodes to wrap, with new parent instructions 6368 // returning the result of calling createElement("li") on 6369 // the context object. Append the result to sublist." 6370 sublist.push(wrap( 6371 nodesToWrap, 6372 undefined, 6373 createLi, 6374 range 6375 )); 6376 } 6377 } 6378 6379 // "If sublist's first member's parent is an HTML element with 6380 // local name tag name, or if every member of sublist is an ol or 6381 // ul, continue this loop from the beginning." 6382 if (isHtmlElement_obsolete(sublist[0].parentNode, tagName) || $_(sublist).every(isOlUl)) { 6383 continue; 6384 } 6385 6386 // "If sublist's first member's parent is an HTML element with 6387 // local name other tag name:" 6388 if (isHtmlElement_obsolete(sublist[0].parentNode, otherTagName)) { 6389 6390 // "Record the values of sublist, and let values be the 6391 // result." 6392 values = recordValues(sublist); 6393 6394 // "Split the parent of sublist." 6395 splitParent(sublist, range); 6396 6397 // "Wrap sublist, with sibling criteria returning true for an 6398 // HTML element with local name tag name and false otherwise, 6399 // and new parent instructions returning the result of calling 6400 // createElement(tag name) on the context object." 6401 wrap( 6402 sublist, 6403 makeIsElementPred(tagName), 6404 makeCreateElement(tagName), 6405 range 6406 ); 6407 6408 // "Restore the values from values." 6409 restoreValues(values, range); 6410 6411 // "Continue this loop from the beginning." 6412 continue; 6413 } 6414 6415 // "Wrap sublist, with sibling criteria returning true for an HTML 6416 // element with local name tag name and false otherwise, and new 6417 // parent instructions being the following:" 6418 // . . . 6419 // "Fix disallowed ancestors of the previous step's result." 6420 fixDisallowedAncestors(wrap( 6421 sublist, 6422 makeIsElementPred(tagName), 6423 makeCreateElementSublist(tagName, sublist, range), 6424 range 6425 ), range); 6426 } 6427 } 6428 } 6429 6430 6431 //@} 6432 ///// Justifying the selection ///// 6433 //@{ 6434 6435 function justifySelection(alignment, range) { 6436 6437 // "Block-extend the active range, and let new range be the result." 6438 var newRange = blockExtend(range); 6439 6440 // "Let element list be a list of all editable Elements contained in new 6441 // range that either has an attribute in the HTML namespace whose local 6442 // name is "align", or has a style attribute that sets "text-align", or is 6443 // a center." 6444 var elementList = getAllContainedNodes(newRange, function (node) { 6445 return node.nodeType == $_.Node.ELEMENT_NODE && isEditable(node) 6446 // Ignoring namespaces here 6447 && (hasAttribute(node, "align") || node.style.textAlign != "" || isNamedHtmlElement(node, 'center')); 6448 }); 6449 6450 // "For each element in element list:" 6451 var i; 6452 for (i = 0; i < elementList.length; i++) { 6453 var element = elementList[i]; 6454 6455 // "If element has an attribute in the HTML namespace whose local name 6456 // is "align", remove that attribute." 6457 element.removeAttribute("align"); 6458 6459 // "Unset the CSS property "text-align" on element, if it's set by a 6460 // style attribute." 6461 element.style.textAlign = ""; 6462 if (element.getAttribute("style") == "") { 6463 element.removeAttribute("style"); 6464 } 6465 6466 // "If element is a div or span or center with no attributes, remove 6467 // it, preserving its descendants." 6468 if (isHtmlElementInArray(element, ["div", "span", "center"]) && !element.attributes.length) { 6469 removePreservingDescendants(element, range); 6470 } 6471 6472 // "If element is a center with one or more attributes, set the tag 6473 // name of element to "div"." 6474 if (isNamedHtmlElement(element, 'center') && element.attributes.length) { 6475 setTagName(element, "div", range); 6476 } 6477 } 6478 6479 // "Block-extend the active range, and let new range be the result." 6480 newRange = blockExtend(globalRange); 6481 6482 // "Let node list be a list of nodes, initially empty." 6483 var nodeList = []; 6484 6485 // "For each node node contained in new range, append node to node list if 6486 // the last member of node list (if any) is not an ancestor of node; node 6487 // is editable; node is an allowed child of "div"; and node's alignment 6488 // value is not alignment." 6489 nodeList = getContainedNodes(newRange, function (node) { 6490 return isEditable(node) && isAllowedChild(node, "div") && getAlignmentValue(node) != alignment; 6491 }); 6492 6493 function makeIsAlignedDiv(alignment) { 6494 return function (node) { 6495 return isNamedHtmlElement(node, 'div') && $_(node.attributes).every(function (attr) { 6496 return (attr.name == "align" && attr.value.toLowerCase() == alignment) || (attr.name == "style" && getStyleLength(node) == 1 && node.style.textAlign == alignment); 6497 }); 6498 }; 6499 } 6500 6501 function makeCreateAlignedDiv(alignment) { 6502 return function () { 6503 var newParent = document.createElement("div"); 6504 newParent.setAttribute("style", "text-align: " + alignment); 6505 return newParent; 6506 }; 6507 } 6508 6509 // "While node list is not empty:" 6510 while (nodeList.length) { 6511 // "Let sublist be a list of nodes, initially empty." 6512 var sublist = []; 6513 6514 // "Remove the first member of node list and append it to sublist." 6515 sublist.push(nodeList.shift()); 6516 6517 // "While node list is not empty, and the first member of node list is 6518 // the nextSibling of the last member of sublist, remove the first 6519 // member of node list and append it to sublist." 6520 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 6521 sublist.push(nodeList.shift()); 6522 } 6523 6524 // "Wrap sublist. Sibling criteria returns true for any div that has 6525 // one or both of the following two attributes and no other attributes, 6526 // and false otherwise:" 6527 // 6528 // * "An align attribute whose value is an ASCII case-insensitive 6529 // match for alignment. 6530 // * "A style attribute which sets exactly one CSS property 6531 // (including unrecognized or invalid attributes), which is 6532 // "text-align", which is set to alignment. 6533 // 6534 // "New parent instructions are to call createElement("div") on the 6535 // context object, then set its CSS property "text-align" to alignment 6536 // and return the result." 6537 wrap( 6538 sublist, 6539 makeIsAlignedDiv(alignment), 6540 makeCreateAlignedDiv(alignment), 6541 range 6542 ); 6543 } 6544 } 6545 6546 //@} 6547 ///// Move the given collapsed range over adjacent zero-width whitespace characters. 6548 ///// The range is 6549 //@{ 6550 /** 6551 * Move the given collapsed range over adjacent zero-width whitespace characters. 6552 * If the range is not collapsed or is not contained in a text node, it is not modified 6553 * @param range range to modify 6554 * @param forward {Boolean} true to move forward, false to move backward 6555 */ 6556 function moveOverZWSP(range, forward) { 6557 var offset; 6558 if (!range.collapsed) { 6559 return; 6560 } 6561 6562 offset = range.startOffset; 6563 6564 if (forward) { 6565 // check whether the range starts in a text node 6566 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6567 // move forward (i.e. increase offset) as long as we stay in the text node and have zwsp characters to the right 6568 while (offset < range.startContainer.data.length && range.startContainer.data.charAt(offset) === '\u200b') { 6569 offset++; 6570 } 6571 } 6572 } else { 6573 // check whether the range starts in a text node 6574 if (range.startContainer && range.startContainer.nodeType === $_.Node.TEXT_NODE) { 6575 // move backward (i.e. decrease offset) as long as we stay in the text node and have zwsp characters to the left 6576 while (offset > 0 && range.startContainer.data.charAt(offset - 1) === '\u200b') { 6577 offset--; 6578 } 6579 } 6580 } 6581 6582 // if the offset was changed, set it back to the collapsed range 6583 if (offset !== range.startOffset) { 6584 range.setStart(range.startContainer, offset); 6585 range.setEnd(range.startContainer, offset); 6586 } 6587 } 6588 6589 /** 6590 * implementation of the delete command 6591 * will attempt to delete contents within range if non-collapsed 6592 * or delete the character left of the cursor position if range 6593 6594 * is collapsed. Is used to define the behaviour of the backspace 6595 * button. 6596 * 6597 * @param value is just there for compatibility with the commands api. parameter is ignored. 6598 * @param range the range to execute the delete command for 6599 * @return void 6600 */ 6601 commands["delete"] = { 6602 action: function (value, range) { 6603 var i; 6604 6605 // special behaviour for skipping zero-width whitespaces in IE7 6606 if (Aloha.browser.msie && Aloha.browser.version <= 7) { 6607 moveOverZWSP(range, false); 6608 } 6609 6610 // "If the active range is not collapsed, delete the contents of the 6611 // active range and abort these steps." 6612 if (!range.collapsed) { 6613 deleteContents(range); 6614 return; 6615 } 6616 6617 // "Canonicalize whitespace at (active range's start node, active 6618 // range's start offset)." 6619 canonicalizeWhitespace(range.startContainer, range.startOffset); 6620 6621 // "Let node and offset be the active range's start node and offset." 6622 var node = range.startContainer; 6623 var offset = range.startOffset; 6624 var isBr = false; 6625 var isHr = false; 6626 6627 // "Repeat the following steps:" 6628 while (true) { 6629 // we need to reset isBr and isHr on every interation of the loop 6630 if (offset > 0) { 6631 isBr = isNamedHtmlElement(node.childNodes[offset - 1], "br") || false; 6632 isHr = isNamedHtmlElement(node.childNodes[offset - 1], "hr") || false; 6633 } 6634 // "If offset is zero and node's previousSibling is an editable 6635 // invisible node, remove node's previousSibling from its parent." 6636 if (offset == 0 && isEditable(node.previousSibling) && isInvisible(node.previousSibling)) { 6637 node.parentNode.removeChild(node.previousSibling); 6638 continue; 6639 } 6640 // "Otherwise, if node has a child with index offset − 1 and that 6641 // child is an editable invisible node, remove that child from 6642 // node, then subtract one from offset." 6643 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && (isInvisible(node.childNodes[offset - 1]) || isBr || isHr)) { 6644 node.removeChild(node.childNodes[offset - 1]); 6645 offset--; 6646 if (isBr || isHr) { 6647 range.setStart(node, offset); 6648 range.setEnd(node, offset); 6649 return; 6650 } 6651 continue; 6652 6653 } 6654 // "Otherwise, if offset is zero and node is an inline node, or if 6655 // node is an invisible node, set offset to the index of node, then 6656 // set node to its parent." 6657 if ((offset == 0 && isInlineNode(node)) || isInvisible(node)) { 6658 offset = Dom.getIndexInParent(node); 6659 node = node.parentNode; 6660 continue; 6661 } 6662 // "Otherwise, if node has a child with index offset − 1 and that 6663 // child is an editable a, remove that child from node, preserving 6664 // its descendants. Then abort these steps." 6665 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isEditable(node.childNodes[offset - 1]) && isNamedHtmlElement(node.childNodes[offset - 1], "a")) { 6666 removePreservingDescendants(node.childNodes[offset - 1], range); 6667 return; 6668 6669 } 6670 // "Otherwise, if node has a child with index offset − 1 and that 6671 // child is not a block node or a br or an img, set node to that 6672 // child, then set offset to the length of node." 6673 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && !isBlockNode(node.childNodes[offset - 1]) && !isHtmlElementInArray(node.childNodes[offset - 1], ["br", "img"])) { 6674 node = node.childNodes[offset - 1]; 6675 offset = getNodeLength(node); 6676 continue; 6677 } 6678 // "Otherwise, break from this loop." 6679 // brk is a quick and dirty jslint workaround since I don't want to rewrite this loop 6680 var brk = true; 6681 if (brk) { 6682 break; 6683 } 6684 } 6685 6686 // if the previous node is an aloha-table we want to delete it 6687 var delBlock = getBlockAtPreviousPosition(node, offset); 6688 if (delBlock) { 6689 delBlock.parentNode.removeChild(delBlock); 6690 return; 6691 } 6692 6693 // "If node is a Text node and offset is not zero, call collapse(node, 6694 // offset) on the Selection. Then delete the contents of the range with 6695 // start (node, offset − 1) and end (node, offset) and abort these 6696 // steps." 6697 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0) { 6698 range.setStart(node, offset - 1); 6699 range.setEnd(node, offset - 1); 6700 deleteContents(node, offset - 1, node, offset); 6701 6702 return; 6703 } 6704 6705 // @iebug 6706 // when inserting a special char via the plugin 6707 // there where problems deleting them again with backspace after insertation 6708 // see https://github.com/alohaeditor/Aloha-Editor/issues/517 6709 if (node.nodeType == $_.Node.TEXT_NODE && offset == 0 && Aloha.browser.msie) { 6710 offset = 1; 6711 range.setStart(node, offset); 6712 range.setEnd(node, offset); 6713 range.startOffset = 0; 6714 deleteContents(range); 6715 return; 6716 } 6717 6718 // "If node is an inline node, abort these steps." 6719 if (isInlineNode(node)) { 6720 return; 6721 } 6722 6723 // "If node has a child with index offset − 1 and that child is a br or 6724 // hr or img, call collapse(node, offset) on the Selection. Then delete 6725 // the contents of the range with start (node, offset − 1) and end 6726 // (node, offset) and abort these steps." 6727 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset - 1], ["br", "hr", "img"])) { 6728 range.setStart(node, offset); 6729 range.setEnd(node, offset); 6730 deleteContents(range); 6731 return; 6732 } 6733 6734 // "If node is an li or dt or dd and is the first child of its parent, 6735 // and offset is zero:" 6736 if (isHtmlElementInArray(node, ["li", "dt", "dd"]) && node == node.parentNode.firstChild && offset == 0) { 6737 // "Let items be a list of all lis that are ancestors of node." 6738 // 6739 // Remember, must be in tree order. 6740 var items = []; 6741 var ancestor; 6742 for (ancestor = node.parentNode; ancestor; ancestor = ancestor.parentNode) { 6743 if (isNamedHtmlElement(ancestor, 'li')) { 6744 items.unshift(ancestor); 6745 6746 } 6747 } 6748 6749 // "Normalize sublists of each item in items." 6750 for (i = 0; i < items.length; i++) { 6751 normalizeSublists(items[i], range); 6752 } 6753 6754 // "Record the values of the one-node list consisting of node, and 6755 // let values be the result." 6756 var values = recordValues([node]); 6757 6758 // "Split the parent of the one-node list consisting of node." 6759 splitParent([node], range); 6760 6761 // "Restore the values from values." 6762 restoreValues(values, range); 6763 6764 // "If node is a dd or dt, and it is not an allowed child of any of 6765 // its ancestors in the same editing host, set the tag name of node 6766 // to the default single-line container name and let node be the 6767 // result." 6768 if (isHtmlElementInArray(node, ["dd", "dt"]) && $_(getAncestors(node)).every(function (ancestor) { return !inSameEditingHost(node, ancestor) || !isAllowedChild(node, ancestor); })) { 6769 node = setTagName(node, defaultSingleLineContainerName, range); 6770 } 6771 6772 // "Fix disallowed ancestors of node." 6773 fixDisallowedAncestors(node, range); 6774 6775 // fix the lists to be html5 conformant 6776 for (i = 0; i < items.length; i++) { 6777 unNormalizeSublists(items[i].parentNode, range); 6778 } 6779 6780 // "Abort these steps." 6781 return; 6782 } 6783 6784 // "Let start node equal node and let start offset equal offset." 6785 var startNode = node; 6786 var startOffset = offset; 6787 6788 // "Repeat the following steps:" 6789 while (true) { 6790 // "If start offset is zero, set start offset to the index of start 6791 // node and then set start node to its parent." 6792 if (startOffset == 0) { 6793 startOffset = Dom.getIndexInParent(startNode); 6794 startNode = startNode.parentNode; 6795 6796 // "Otherwise, if start node has an editable invisible child with 6797 // index start offset minus one, remove it from start node and 6798 // subtract one from start offset." 6799 } else if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) { 6800 startNode.removeChild(startNode.childNodes[startOffset - 1]); 6801 startOffset--; 6802 6803 // "Otherwise, break from this loop." 6804 } else { 6805 break; 6806 } 6807 } 6808 6809 // "If offset is zero, and node has an editable ancestor container in 6810 // the same editing host that's an indentation element:" 6811 if (offset == 0 && $_(getAncestors(node).concat(node)).filter(function (ancestor) { return isEditable(ancestor) && inSameEditingHost(ancestor, node) && isIndentationElement(ancestor); }).length) { 6812 // "Block-extend the range whose start and end are both (node, 0), 6813 // and let new range be the result." 6814 var newRange = Aloha.createRange(); 6815 newRange.setStart(node, 0); 6816 newRange.setEnd(node, 0); 6817 newRange = blockExtend(newRange); 6818 6819 // "Let node list be a list of nodes, initially empty." 6820 // 6821 // "For each node current node contained in new range, append 6822 // current node to node list if the last member of node list (if 6823 // any) is not an ancestor of current node, and current node is 6824 // editable but has no editable descendants." 6825 var nodeList = getContainedNodes(newRange, function (currentNode) { 6826 return isEditable(currentNode) && !hasEditableDescendants(currentNode); 6827 }); 6828 6829 // "Outdent each node in node list." 6830 for (i = 0; i < nodeList.length; i++) { 6831 outdentNode(nodeList[i], range); 6832 } 6833 6834 // "Abort these steps." 6835 return; 6836 } 6837 6838 // "If the child of start node with index start offset is a table, 6839 // abort these steps." 6840 if (isNamedHtmlElement(startNode.childNodes[startOffset], "table")) { 6841 return; 6842 } 6843 6844 // "If start node has a child with index start offset − 1, and that 6845 // child is a table:" 6846 if (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length && isNamedHtmlElement(startNode.childNodes[startOffset - 1], "table")) { 6847 // "Call collapse(start node, start offset − 1) on the context 6848 // object's Selection." 6849 range.setStart(startNode, startOffset - 1); 6850 6851 // "Call extend(start node, start offset) on the context object's 6852 // Selection." 6853 range.setEnd(startNode, startOffset); 6854 6855 // "Abort these steps." 6856 return; 6857 } 6858 6859 // "If offset is zero; and either the child of start node with index 6860 // start offset minus one is an hr, or the child is a br whose 6861 // previousSibling is either a br or not an inline node:" 6862 if (offset == 0 6863 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "hr") 6864 || (isNamedHtmlElement(startNode.childNodes[startOffset - 1], "br") 6865 && (isNamedHtmlElement(startNode.childNodes[startOffset - 1].previousSibling, "br") 6866 || !isInlineNode(startNode.childNodes[startOffset - 1].previousSibling))))) { 6867 // "Call collapse(node, offset) on the Selection." 6868 range.setStart(node, offset); 6869 range.setEnd(node, offset); 6870 6871 // "Delete the contents of the range with start (start node, start 6872 // offset − 1) and end (start node, start offset)." 6873 deleteContents(startNode, startOffset - 1, startNode, startOffset); 6874 6875 // "Abort these steps." 6876 return; 6877 } 6878 6879 // "If the child of start node with index start offset is an li or dt 6880 // or dd, and that child's firstChild is an inline node, and start 6881 // offset is not zero:" 6882 if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isInlineNode(startNode.childNodes[startOffset].firstChild) && startOffset != 0) { 6883 // "Let previous item be the child of start node with index start 6884 // offset minus one." 6885 var previousItem = startNode.childNodes[startOffset - 1]; 6886 6887 // "If previous item's lastChild is an inline node other than a br, 6888 // call createElement("br") on the context object and append the 6889 // result as the last child of previous item." 6890 if (isInlineNode(previousItem.lastChild) && !isNamedHtmlElement(previousItem.lastChild, "br")) { 6891 previousItem.appendChild(document.createElement("br")); 6892 } 6893 6894 // "If previous item's lastChild is an inline node, call 6895 // createElement("br") on the context object and append the result 6896 // as the last child of previous item." 6897 if (isInlineNode(previousItem.lastChild)) { 6898 previousItem.appendChild(document.createElement("br")); 6899 } 6900 } 6901 6902 // "If the child of start node with index start offset is an li or dt 6903 // or dd, and its previousSibling is also an li or dt or dd, set start 6904 // node to its child with index start offset − 1, then set start offset 6905 // to start node's length, then set node to start node's nextSibling, 6906 // then set offset to 0." 6907 if (isHtmlElementInArray(startNode.childNodes[startOffset], ["li", "dt", "dd"]) && isHtmlElementInArray(startNode.childNodes[startOffset - 1], ["li", "dt", "dd"])) { 6908 startNode = startNode.childNodes[startOffset - 1]; 6909 startOffset = getNodeLength(startNode); 6910 node = startNode.nextSibling; 6911 offset = 0; 6912 6913 // "Otherwise, while start node has a child with index start offset 6914 // minus one:" 6915 } else { 6916 while (0 <= startOffset - 1 && startOffset - 1 < startNode.childNodes.length) { 6917 // "If start node's child with index start offset minus one is 6918 // editable and invisible, remove it from start node, then 6919 // subtract one from start offset." 6920 if (isEditable(startNode.childNodes[startOffset - 1]) && isInvisible(startNode.childNodes[startOffset - 1])) { 6921 startNode.removeChild(startNode.childNodes[startOffset - 1]); 6922 startOffset--; 6923 6924 // "Otherwise, set start node to its child with index start 6925 // offset minus one, then set start offset to the length of 6926 // start node." 6927 } else { 6928 startNode = startNode.childNodes[startOffset - 1]; 6929 startOffset = getNodeLength(startNode); 6930 } 6931 } 6932 } 6933 6934 // "Delete the contents of the range with start (start node, start 6935 // offset) and end (node, offset)." 6936 var delRange = Aloha.createRange(); 6937 delRange.setStart(startNode, startOffset); 6938 delRange.setEnd(node, offset); 6939 deleteContents(delRange); 6940 6941 if (!isAncestorContainer(document.body, range.startContainer)) { 6942 if (delRange.startContainer.hasChildNodes() 6943 || delRange.startContainer.nodeType == $_.Node.TEXT_NODE 6944 || isEditingHost(delRange.startContainer)) { 6945 range.setStart(delRange.startContainer, delRange.startOffset); 6946 range.setEnd(delRange.startContainer, delRange.startOffset); 6947 } else { 6948 range.setStart(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer)); 6949 range.setEnd(delRange.startContainer.parentNode, Dom.getIndexInParent(delRange.startContainer)); 6950 } 6951 } 6952 } 6953 }; 6954 6955 //@} 6956 ///// The formatBlock command ///// 6957 //@{ 6958 // "A formattable block name is "address", "dd", "div", "dt", "h1", "h2", "h3", 6959 // "h4", "h5", "h6", "p", or "pre"." 6960 var formattableBlockNames = ["address", "dd", "div", "dt", "h1", "h2", "h3", "h4", "h5", "h6", "p", "pre"]; 6961 6962 commands.formatblock = { 6963 action: function (value) { 6964 var i; 6965 6966 // "If value begins with a "<" character and ends with a ">" character, 6967 // remove the first and last characters from it." 6968 if (/^<.*>$/.test(value)) { 6969 value = value.slice(1, -1); 6970 } 6971 6972 // "Let value be converted to ASCII lowercase." 6973 value = value.toLowerCase(); 6974 6975 // "If value is not a formattable block name, abort these steps and do 6976 // nothing." 6977 if ($_(formattableBlockNames).indexOf(value) == -1) { 6978 return; 6979 } 6980 6981 // "Block-extend the active range, and let new range be the result." 6982 var newRange = blockExtend(getActiveRange()); 6983 6984 // "Let node list be an empty list of nodes." 6985 // 6986 // "For each node node contained in new range, append node to node list 6987 // if it is editable, the last member of original node list (if any) is 6988 // not an ancestor of node, node is either a non-list single-line 6989 // container or an allowed child of "p" or a dd or dt, and node is not 6990 // the ancestor of a prohibited paragraph child." 6991 var nodeList = getContainedNodes(newRange, function (node) { 6992 return isEditable(node) && (isNonListSingleLineContainer(node) || isAllowedChild(node, "p") || isHtmlElementInArray(node, ["dd", "dt"])) && !$_(getDescendants(node)).some(isProhibitedParagraphChild); 6993 }); 6994 6995 // "Record the values of node list, and let values be the result." 6996 var values = recordValues(nodeList); 6997 6998 function makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node) { 6999 return function (ancestor) { 7000 return (isEditable(ancestor) 7001 && inSameEditingHost(ancestor, node) 7002 && isHtmlElement_obsolete(ancestor, formattableBlockNames) 7003 && !$_(getDescendants(ancestor)).some(isProhibitedParagraphChild)); 7004 }; 7005 } 7006 7007 function makeIsElementWithoutAttributes(value) { 7008 return function (node) { 7009 return isHtmlElement_obsolete(node, value) && !node.attributes.length; 7010 }; 7011 } 7012 7013 function returnFalse() { 7014 return false; 7015 } 7016 7017 function makeCreateElement(value) { 7018 return function () { 7019 return document.createElement(value); 7020 }; 7021 } 7022 7023 // "For each node in node list, while node is the descendant of an 7024 // editable HTML element in the same editing host, whose local name is 7025 // a formattable block name, and which is not the ancestor of a 7026 // prohibited paragraph child, split the parent of the one-node list 7027 // consisting of node." 7028 for (i = 0; i < nodeList.length; i++) { 7029 var node = nodeList[i]; 7030 while ($_(getAncestors(node)).some(makeIsEditableElementInSameEditingHostDoesNotContainProhibitedParagraphChildren(node))) { 7031 splitParent([node], newRange); 7032 } 7033 } 7034 7035 // "Restore the values from values." 7036 restoreValues(values, newRange); 7037 7038 // "While node list is not empty:" 7039 while (nodeList.length) { 7040 var sublist; 7041 7042 // "If the first member of node list is a single-line 7043 // container:" 7044 if (isSingleLineContainer(nodeList[0])) { 7045 // "Let sublist be the children of the first member of node 7046 // list." 7047 sublist = [].slice.call(toArray(nodeList[0].childNodes)); 7048 7049 // "Record the values of sublist, and let values be the 7050 // result." 7051 values = recordValues(sublist); 7052 7053 // "Remove the first member of node list from its parent, 7054 // preserving its descendants." 7055 removePreservingDescendants(nodeList[0], newRange); 7056 7057 // "Restore the values from values." 7058 restoreValues(values, newRange); 7059 7060 // "Remove the first member from node list." 7061 nodeList.shift(); 7062 7063 // "Otherwise:" 7064 } else { 7065 // "Let sublist be an empty list of nodes." 7066 sublist = []; 7067 7068 // "Remove the first member of node list and append it to 7069 // sublist." 7070 sublist.push(nodeList.shift()); 7071 7072 // "While node list is not empty, and the first member of 7073 // node list is the nextSibling of the last member of 7074 // sublist, and the first member of node list is not a 7075 // single-line container, and the last member of sublist is 7076 // not a br, remove the first member of node list and 7077 // append it to sublist." 7078 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isSingleLineContainer(nodeList[0]) && !isNamedHtmlElement(sublist[sublist.length - 1], "BR")) { 7079 sublist.push(nodeList.shift()); 7080 } 7081 } 7082 7083 // "Wrap sublist. If value is "div" or "p", sibling criteria 7084 // returns false; otherwise it returns true for an HTML element 7085 // with local name value and no attributes, and false otherwise. 7086 // New parent instructions return the result of running 7087 // createElement(value) on the context object. Then fix disallowed 7088 // ancestors of the result." 7089 fixDisallowedAncestors(wrap( 7090 sublist, 7091 jQuery.inArray(value, ["div", "p"]) == -1 ? makeIsElementWithoutAttributes(value) : returnFalse, 7092 makeCreateElement(value), 7093 newRange 7094 ), newRange); 7095 } 7096 }, 7097 indeterm: function () { 7098 // "Block-extend the active range, and let new range be the result." 7099 var newRange = blockExtend(getActiveRange()); 7100 7101 // "Let node list be all visible editable nodes that are contained in 7102 // new range and have no children." 7103 var nodeList = getAllContainedNodes(newRange, function (node) { 7104 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7105 }); 7106 7107 // "If node list is empty, return false." 7108 if (!nodeList.length) { 7109 return false; 7110 } 7111 7112 // "Let type be null." 7113 var type = null; 7114 7115 // "For each node in node list:" 7116 var i; 7117 for (i = 0; i < nodeList.length; i++) { 7118 var node = nodeList[i]; 7119 7120 // "While node's parent is editable and in the same editing host as 7121 // node, and node is not an HTML element whose local name is a 7122 // formattable block name, set node to its parent." 7123 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7124 node = node.parentNode; 7125 } 7126 7127 // "Let current type be the empty string." 7128 var currentType = ""; 7129 7130 // "If node is an editable HTML element whose local name is a 7131 // formattable block name, and node is not the ancestor of a 7132 // prohibited paragraph child, set current type to node's local 7133 // name." 7134 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7135 currentType = node.tagName; 7136 } 7137 7138 // "If type is null, set type to current type." 7139 if (type === null) { 7140 type = currentType; 7141 7142 // "Otherwise, if type does not equal current type, return true." 7143 } else if (type != currentType) { 7144 return true; 7145 } 7146 } 7147 7148 // "Return false." 7149 return false; 7150 }, 7151 value: function () { 7152 // "Block-extend the active range, and let new range be the result." 7153 var newRange = blockExtend(getActiveRange()); 7154 7155 // "Let node be the first visible editable node that is contained in 7156 // new range and has no children. If there is no such node, return the 7157 // empty string." 7158 var nodes = getAllContainedNodes(newRange, function (node) { 7159 return isVisible(node) && isEditable(node) && !node.hasChildNodes(); 7160 }); 7161 if (!nodes.length) { 7162 return ""; 7163 } 7164 var node = nodes[0]; 7165 7166 // "While node's parent is editable and in the same editing host as 7167 // node, and node is not an HTML element whose local name is a 7168 // formattable block name, set node to its parent." 7169 while (isEditable(node.parentNode) && inSameEditingHost(node, node.parentNode) && !isHtmlElement_obsolete(node, formattableBlockNames)) { 7170 node = node.parentNode; 7171 } 7172 7173 // "If node is an editable HTML element whose local name is a 7174 // formattable block name, and node is not the ancestor of a prohibited 7175 // paragraph child, return node's local name, converted to ASCII 7176 // lowercase." 7177 if (isEditable(node) && isHtmlElement_obsolete(node, formattableBlockNames) && !$_(getDescendants(node)).some(isProhibitedParagraphChild)) { 7178 return node.tagName.toLowerCase(); 7179 } 7180 7181 // "Return the empty string." 7182 return ""; 7183 } 7184 }; 7185 7186 //@} 7187 ///// The forwardDelete command ///// 7188 //@{ 7189 commands.forwarddelete = { 7190 action: function (value, range) { 7191 // special behaviour for skipping zero-width whitespaces in IE7 7192 if (Aloha.browser.msie && Aloha.browser.version <= 7) { 7193 moveOverZWSP(range, true); 7194 } 7195 7196 // "If the active range is not collapsed, delete the contents of the 7197 // active range and abort these steps." 7198 if (!range.collapsed) { 7199 deleteContents(range); 7200 return; 7201 } 7202 7203 // "Canonicalize whitespace at (active range's start node, active 7204 // range's start offset)." 7205 canonicalizeWhitespace(range.startContainer, range.startOffset); 7206 7207 // "Let node and offset be the active range's start node and offset." 7208 var node = range.startContainer; 7209 var offset = range.startOffset; 7210 var isBr = false; 7211 var isHr = false; 7212 7213 // "Repeat the following steps:" 7214 while (true) { 7215 // check whether the next element is a br or hr 7216 // Commented out for unknown reason. 7217 //if (offset < node.childNodes.length) { 7218 // isBr = isHtmlElement_obsolete(node.childNodes[offset], "br") || false; 7219 // isHr = isHtmlElement_obsolete(node.childNodes[offset], "hr") || false; 7220 //} 7221 7222 // "If offset is the length of node and node's nextSibling is an 7223 // editable invisible node, remove node's nextSibling from its 7224 // parent." 7225 if (offset == getNodeLength(node) && isEditable(node.nextSibling) && isInvisible(node.nextSibling)) { 7226 node.parentNode.removeChild(node.nextSibling); 7227 7228 // "Otherwise, if node has a child with index offset and that child 7229 // is an editable invisible node, remove that child from node." 7230 } else if (offset < node.childNodes.length && isEditable(node.childNodes[offset]) && (isInvisible(node.childNodes[offset]) || isBr || isHr)) { 7231 node.removeChild(node.childNodes[offset]); 7232 if (isBr || isHr) { 7233 ensureContainerEditable(node); 7234 range.setStart(node, offset); 7235 range.setEnd(node, offset); 7236 return; 7237 } 7238 7239 // "Otherwise, if node has a child with index offset and that child 7240 // is a collapsed block prop, add one to offset." 7241 } else if (offset < node.childNodes.length && isCollapsedBlockProp(node.childNodes[offset])) { 7242 offset++; 7243 7244 // "Otherwise, if offset is the length of node and node is an 7245 // inline node, or if node is invisible, set offset to one plus the 7246 // index of node, then set node to its parent." 7247 } else if ((offset == getNodeLength(node) && isInlineNode(node)) || isInvisible(node)) { 7248 offset = 1 + Dom.getIndexInParent(node); 7249 node = node.parentNode; 7250 7251 // "Otherwise, if node has a child with index offset and that child 7252 // is not a block node or a br or an img, set node to that child, 7253 // then set offset to zero." 7254 } else if (offset < node.childNodes.length && !isBlockNode(node.childNodes[offset]) && !isHtmlElementInArray(node.childNodes[offset], ["br", "img"])) { 7255 node = node.childNodes[offset]; 7256 offset = 0; 7257 7258 // "Otherwise, break from this loop." 7259 } else { 7260 break; 7261 } 7262 } 7263 7264 // collapse whitespace in the node, if it is a text node 7265 canonicalizeWhitespace(range.startContainer, range.startOffset); 7266 7267 // if the next node is an aloha-table we want to delete it 7268 var delBlock = getBlockAtNextPosition(node, offset); 7269 if (delBlock) { 7270 delBlock.parentNode.removeChild(delBlock); 7271 return; 7272 } 7273 7274 var endOffset; 7275 // "If node is a Text node and offset is not node's length:" 7276 if (node.nodeType == $_.Node.TEXT_NODE && offset != getNodeLength(node)) { 7277 // "Call collapse(node, offset) on the Selection." 7278 range.setStart(node, offset); 7279 range.setEnd(node, offset); 7280 7281 // "Let end offset be offset plus one." 7282 endOffset = offset + 1; 7283 7284 // "While end offset is not node's length and the end offsetth 7285 // element of node's data has general category M when interpreted 7286 // as a Unicode code point, add one to end offset." 7287 // 7288 // TODO: Not even going to try handling anything beyond the most 7289 7290 // basic combining marks, since I couldn't find a good list. I 7291 // special-case a few Hebrew diacritics too to test basic coverage 7292 // of non-Latin stuff. 7293 while (endOffset != node.length && /^[\u0300-\u036f\u0591-\u05bd\u05c1\u05c2]$/.test(node.data[endOffset])) { 7294 endOffset++; 7295 } 7296 7297 // "Delete the contents of the range with start (node, offset) and 7298 // end (node, end offset)." 7299 deleteContents(node, offset, node, endOffset); 7300 7301 // "Abort these steps." 7302 return; 7303 } 7304 7305 // "If node is an inline node, abort these steps." 7306 if (isInlineNode(node)) { 7307 return; 7308 } 7309 7310 // "If node has a child with index offset and that child is a br or hr 7311 // or img, call collapse(node, offset) on the Selection. Then delete 7312 // the contents of the range with start (node, offset) and end (node, 7313 // offset + 1) and abort these steps." 7314 if (offset < node.childNodes.length && isHtmlElementInArray(node.childNodes[offset], ["br", "hr", "img"])) { 7315 range.setStart(node, offset); 7316 range.setEnd(node, offset); 7317 deleteContents(node, offset, node, offset + 1); 7318 return; 7319 } 7320 7321 // "Let end node equal node and let end offset equal offset." 7322 var endNode = node; 7323 endOffset = offset; 7324 7325 // "Repeat the following steps:" 7326 while (true) { 7327 // "If end offset is the length of end node, set end offset to one 7328 // plus the index of end node and then set end node to its parent." 7329 if (endOffset == getNodeLength(endNode)) { 7330 endOffset = 1 + Dom.getIndexInParent(endNode); 7331 endNode = endNode.parentNode; 7332 7333 // "Otherwise, if end node has a an editable invisible child with 7334 // index end offset, remove it from end node." 7335 } else if (endOffset < endNode.childNodes.length && isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7336 endNode.removeChild(endNode.childNodes[endOffset]); 7337 7338 // "Otherwise, break from this loop." 7339 } else { 7340 break; 7341 } 7342 } 7343 7344 // "If the child of end node with index end offset minus one is a 7345 // table, abort these steps." 7346 if (isNamedHtmlElement(endNode.childNodes[endOffset - 1], "table")) { 7347 return; 7348 } 7349 7350 // "If the child of end node with index end offset is a table:" 7351 if (isNamedHtmlElement(endNode.childNodes[endOffset], "table")) { 7352 // "Call collapse(end node, end offset) on the context object's 7353 // Selection." 7354 range.setStart(endNode, endOffset); 7355 7356 // "Call extend(end node, end offset + 1) on the context object's 7357 // Selection." 7358 range.setEnd(endNode, endOffset + 1); 7359 7360 // "Abort these steps." 7361 return; 7362 } 7363 7364 // "If offset is the length of node, and the child of end node with 7365 // index end offset is an hr or br:" 7366 if (offset == getNodeLength(node) && isHtmlElementInArray(endNode.childNodes[endOffset], ["br", "hr"])) { 7367 // "Call collapse(node, offset) on the Selection." 7368 range.setStart(node, offset); 7369 range.setEnd(node, offset); 7370 7371 // "Delete the contents of the range with end (end node, end 7372 // offset) and end (end node, end offset + 1)." 7373 deleteContents(endNode, endOffset, endNode, endOffset + 1); 7374 7375 // "Abort these steps." 7376 return; 7377 } 7378 7379 // "While end node has a child with index end offset:" 7380 while (endOffset < endNode.childNodes.length) { 7381 // "If end node's child with index end offset is editable and 7382 // invisible, remove it from end node." 7383 if (isEditable(endNode.childNodes[endOffset]) && isInvisible(endNode.childNodes[endOffset])) { 7384 endNode.removeChild(endNode.childNodes[endOffset]); 7385 7386 // "Otherwise, set end node to its child with index end offset and 7387 // set end offset to zero." 7388 } else { 7389 endNode = endNode.childNodes[endOffset]; 7390 endOffset = 0; 7391 } 7392 } 7393 7394 // "Delete the contents of the range with start (node, offset) and end 7395 // (end node, end offset)." 7396 var newRange = deleteContents(node, offset, endNode, endOffset); 7397 range.setStart(newRange.startContainer, newRange.startOffset); 7398 range.setEnd(newRange.endContainer, newRange.endOffset); 7399 } 7400 }; 7401 7402 //@} 7403 ///// The indent command ///// 7404 //@{ 7405 commands.indent = { 7406 action: function () { 7407 // "Let items be a list of all lis that are ancestor containers of the 7408 // active range's start and/or end node." 7409 // 7410 // Has to be in tree order, remember! 7411 var items = []; 7412 var node; 7413 for (node = getActiveRange().endContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7414 if (isNamedHtmlElement(node, "LI")) { 7415 items.unshift(node); 7416 } 7417 } 7418 for (node = getActiveRange().startContainer; node != getActiveRange().commonAncestorContainer; node = node.parentNode) { 7419 if (isNamedHtmlElement(node, "LI")) { 7420 items.unshift(node); 7421 } 7422 } 7423 for (node = getActiveRange().commonAncestorContainer; node; node = node.parentNode) { 7424 if (isNamedHtmlElement(node, "LI")) { 7425 items.unshift(node); 7426 } 7427 } 7428 7429 // "For each item in items, normalize sublists of item." 7430 var i; 7431 for (i = 0; i < items.length; i++) { 7432 normalizeSublists(items[i], getActiveRange()); 7433 } 7434 7435 // "Block-extend the active range, and let new range be the result." 7436 var newRange = blockExtend(getActiveRange()); 7437 7438 // "Let node list be a list of nodes, initially empty." 7439 var nodeList = []; 7440 7441 // "For each node node contained in new range, if node is editable and 7442 // is an allowed child of "div" or "ol" and if the last member of node 7443 // list (if any) is not an ancestor of node, append node to node list." 7444 nodeList = getContainedNodes(newRange, function (node) { 7445 return isEditable(node) && (isAllowedChild(node, "div") || isAllowedChild(node, "ol")); 7446 }); 7447 7448 // "If the first member of node list is an li whose parent is an ol or 7449 // ul, and its previousSibling is an li as well, normalize sublists of 7450 // its previousSibling." 7451 if (nodeList.length && isNamedHtmlElement(nodeList[0], "LI") && isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]) && isNamedHtmlElement(nodeList[0].previousSibling, "LI")) { 7452 normalizeSublists(nodeList[0].previousSibling, newRange); 7453 } 7454 7455 // "While node list is not empty:" 7456 while (nodeList.length) { 7457 // "Let sublist be a list of nodes, initially empty." 7458 var sublist = []; 7459 7460 // "Remove the first member of node list and append it to sublist." 7461 sublist.push(nodeList.shift()); 7462 7463 // "While the first member of node list is the nextSibling of the 7464 // last member of sublist, remove the first member of node list and 7465 // append it to sublist." 7466 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling) { 7467 sublist.push(nodeList.shift()); 7468 } 7469 7470 // "Indent sublist." 7471 indentNodes(sublist, newRange); 7472 } 7473 } 7474 }; 7475 7476 //@} 7477 ///// The insertHorizontalRule command ///// 7478 //@{ 7479 commands.inserthorizontalrule = { 7480 action: function (value, range) { 7481 7482 // "While range's start offset is 0 and its start node's parent is not 7483 // null, set range's start to (parent of start node, index of start 7484 // node)." 7485 while (range.startOffset == 0 && range.startContainer.parentNode) { 7486 range.setStart(range.startContainer.parentNode, Dom.getIndexInParent(range.startContainer)); 7487 } 7488 7489 // "While range's end offset is the length of its end node, and its end 7490 // node's parent is not null, set range's end to (parent of end node, 1 7491 // + index of start node)." 7492 while (range.endOffset == getNodeLength(range.endContainer) && range.endContainer.parentNode) { 7493 range.setEnd(range.endContainer.parentNode, 1 + Dom.getIndexInParent(range.endContainer)); 7494 } 7495 7496 // "Delete the contents of range, with block merging false." 7497 deleteContents(range, { 7498 blockMerging: false 7499 }); 7500 7501 // "If the active range's start node is neither editable nor an editing 7502 // host, abort these steps." 7503 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7504 return; 7505 } 7506 7507 // "If the active range's start node is a Text node and its start 7508 // offset is zero, set the active range's start and end to (parent of 7509 // start node, index of start node)." 7510 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == 0) { 7511 getActiveRange().setStart(getActiveRange().startContainer.parentNode, Dom.getIndexInParent(getActiveRange().startContainer)); 7512 getActiveRange().collapse(true); 7513 } 7514 7515 // "If the active range's start node is a Text node and its start 7516 // offset is the length of its start node, set the active range's start 7517 // and end to (parent of start node, 1 + index of start node)." 7518 if (getActiveRange().startContainer.nodeType == $_.Node.TEXT_NODE && getActiveRange().startOffset == getNodeLength(getActiveRange().startContainer)) { 7519 getActiveRange().setStart(getActiveRange().startContainer.parentNode, 1 + Dom.getIndexInParent(getActiveRange().startContainer)); 7520 getActiveRange().collapse(true); 7521 } 7522 7523 // "Let hr be the result of calling createElement("hr") on the 7524 // context object." 7525 var hr = document.createElement("hr"); 7526 7527 // "Run insertNode(hr) on the range." 7528 range.insertNode(hr); 7529 7530 // "Fix disallowed ancestors of hr." 7531 fixDisallowedAncestors(hr, range); 7532 7533 // "Run collapse() on the Selection, with first argument equal to the 7534 // parent of hr and the second argument equal to one plus the index of 7535 // hr." 7536 // 7537 // Not everyone actually supports collapse(), so we do it manually 7538 // instead. Also, we need to modify the actual range we're given as 7539 // well, for the sake of autoimplementation.html's range-filling-in. 7540 range.setStart(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7541 range.setEnd(hr.parentNode, 1 + Dom.getIndexInParent(hr)); 7542 Aloha.getSelection().removeAllRanges(); 7543 Aloha.getSelection().addRange(range); 7544 } 7545 }; 7546 7547 //@} 7548 ///// The insertHTML command ///// 7549 //@{ 7550 commands.inserthtml = { 7551 action: function (value, range) { 7552 7553 7554 // "Delete the contents of the active range." 7555 deleteContents(range); 7556 7557 // "If the active range's start node is neither editable nor an editing 7558 // host, abort these steps." 7559 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7560 return; 7561 } 7562 7563 // "Let frag be the result of calling createContextualFragment(value) 7564 // on the active range." 7565 var frag = range.createContextualFragment(value); 7566 7567 // "Let last child be the lastChild of frag." 7568 var lastChild = frag.lastChild; 7569 7570 // "If last child is null, abort these steps." 7571 if (!lastChild) { 7572 return; 7573 } 7574 7575 // "Let descendants be all descendants of frag." 7576 var descendants = getDescendants(frag); 7577 7578 // "If the active range's start node is a block node:" 7579 if (isBlockNode(range.startContainer)) { 7580 // "Let collapsed block props be all editable collapsed block prop 7581 // children of the active range's start node that have index 7582 // greater than or equal to the active range's start offset." 7583 // 7584 // "For each node in collapsed block props, remove node from its 7585 // parent." 7586 $_(range.startContainer.childNodes).filter(function (node, range) { 7587 return isEditable(node) && isCollapsedBlockProp(node) && Dom.getIndexInParent(node) >= range.startOffset; 7588 }, true).forEach(function (node) { 7589 node.parentNode.removeChild(node); 7590 }); 7591 } 7592 7593 // "Call insertNode(frag) on the active range." 7594 range.insertNode(frag); 7595 7596 // "If the active range's start node is a block node with no visible 7597 // children, call createElement("br") on the context object and append 7598 // the result as the last child of the active range's start node." 7599 if (isBlockNode(range.startContainer)) { 7600 ensureContainerEditable(range.startContainer); 7601 } 7602 7603 // "Call collapse() on the context object's Selection, with last 7604 // child's parent as the first argument and one plus its index as the 7605 // second." 7606 range.setStart(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7607 range.setEnd(lastChild.parentNode, 1 + Dom.getIndexInParent(lastChild)); 7608 7609 // "Fix disallowed ancestors of each member of descendants." 7610 var i; 7611 for (i = 0; i < descendants.length; i++) { 7612 fixDisallowedAncestors(descendants[i], range); 7613 } 7614 7615 setActiveRange(range); 7616 } 7617 }; 7618 7619 //@} 7620 ///// The insertImage command ///// 7621 //@{ 7622 commands.insertimage = { 7623 action: function (value) { 7624 // "If value is the empty string, abort these steps and do nothing." 7625 if (value === "") { 7626 return; 7627 } 7628 7629 // "Let range be the active range." 7630 var range = getActiveRange(); 7631 7632 // "Delete the contents of range, with strip wrappers false." 7633 deleteContents(range, { 7634 stripWrappers: false 7635 }); 7636 7637 // "If the active range's start node is neither editable nor an editing 7638 // host, abort these steps." 7639 if (!isEditable(getActiveRange().startContainer) && !isEditingHost(getActiveRange().startContainer)) { 7640 return; 7641 } 7642 7643 // "If range's start node is a block node whose sole child is a br, and 7644 // its start offset is 0, remove its start node's child from it." 7645 if (isBlockNode(range.startContainer) && range.startContainer.childNodes.length == 1 && isNamedHtmlElement(range.startContainer.firstChild, "br") && range.startOffset == 0) { 7646 range.startContainer.removeChild(range.startContainer.firstChild); 7647 } 7648 7649 // "Let img be the result of calling createElement("img") on the 7650 // context object." 7651 var img = document.createElement("img"); 7652 7653 // "Run setAttribute("src", value) on img." 7654 img.setAttribute("src", value); 7655 7656 // "Run insertNode(img) on the range." 7657 range.insertNode(img); 7658 7659 // "Run collapse() on the Selection, with first argument equal to the 7660 // parent of img and the second argument equal to one plus the index of 7661 // img." 7662 // 7663 // Not everyone actually supports collapse(), so we do it manually 7664 // instead. Also, we need to modify the actual range we're given as 7665 // well, for the sake of autoimplementation.html's range-filling-in. 7666 range.setStart(img.parentNode, 1 + Dom.getIndexInParent(img)); 7667 range.setEnd(img.parentNode, 1 + Dom.getIndexInParent(img)); 7668 Aloha.getSelection().removeAllRanges(); 7669 Aloha.getSelection().addRange(range); 7670 7671 // IE adds width and height attributes for some reason, so remove those 7672 // to actually do what the spec says. 7673 img.removeAttribute("width"); 7674 img.removeAttribute("height"); 7675 } 7676 }; 7677 7678 //@} 7679 ///// The insertLineBreak command ///// 7680 //@{ 7681 commands.insertlinebreak = { 7682 action: function (value, range) { 7683 // "Delete the contents of the active range, with strip wrappers false." 7684 deleteContents(range, { 7685 stripWrappers: false 7686 }); 7687 7688 // "If the active range's start node is neither editable nor an editing 7689 // host, abort these steps." 7690 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7691 return; 7692 } 7693 7694 // "If the active range's start node is an Element, and "br" is not an 7695 // allowed child of it, abort these steps." 7696 if (range.startContainer.nodeType == $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer)) { 7697 return; 7698 } 7699 7700 // "If the active range's start node is not an Element, and "br" is not 7701 // an allowed child of the active range's start node's parent, abort 7702 // these steps." 7703 if (range.startContainer.nodeType != $_.Node.ELEMENT_NODE && !isAllowedChild("br", range.startContainer.parentNode)) { 7704 return; 7705 } 7706 7707 // "If the active range's start node is a Text node and its start 7708 // offset is zero, call collapse() on the context object's Selection, 7709 // with first argument equal to the active range's start node's parent 7710 // and second argument equal to the active range's start node's index." 7711 var newNode, newOffset; 7712 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == 0) { 7713 newNode = range.startContainer.parentNode; 7714 newOffset = Dom.getIndexInParent(range.startContainer); 7715 Aloha.getSelection().collapse(newNode, newOffset); 7716 range.setStart(newNode, newOffset); 7717 range.setEnd(newNode, newOffset); 7718 } 7719 7720 // "If the active range's start node is a Text node and its start 7721 // offset is the length of its start node, call collapse() on the 7722 // context object's Selection, with first argument equal to the active 7723 // range's start node's parent and second argument equal to one plus 7724 // the active range's start node's index." 7725 if (range.startContainer.nodeType == $_.Node.TEXT_NODE && range.startOffset == getNodeLength(range.startContainer)) { 7726 newNode = range.startContainer.parentNode; 7727 newOffset = 1 + Dom.getIndexInParent(range.startContainer); 7728 Aloha.getSelection().collapse(newNode, newOffset); 7729 range.setStart(newNode, newOffset); 7730 range.setEnd(newNode, newOffset); 7731 } 7732 7733 // "Let br be the result of calling createElement("br") on the context 7734 // object." 7735 var br = document.createElement("br"); 7736 7737 // "Call insertNode(br) on the active range." 7738 range.insertNode(br); 7739 7740 // "Call collapse() on the context object's Selection, with br's parent 7741 // as the first argument and one plus br's index as the second 7742 // argument." 7743 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7744 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7745 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7746 7747 // "If br is a collapsed line break, call createElement("br") on the 7748 // context object and let extra br be the result, then call 7749 // insertNode(extra br) on the active range." 7750 if (isCollapsedLineBreak(br)) { 7751 // TODO 7752 range.insertNode(createEndBreak()); 7753 7754 // Compensate for nonstandard implementations of insertNode 7755 Aloha.getSelection().collapse(br.parentNode, 1 + Dom.getIndexInParent(br)); 7756 range.setStart(br.parentNode, 1 + Dom.getIndexInParent(br)); 7757 range.setEnd(br.parentNode, 1 + Dom.getIndexInParent(br)); 7758 } 7759 7760 // IE7 is adding this styles: height: auto; min-height: 0px; max-height: none; 7761 // with that there is the ugly "IE-editable-outline" 7762 if (Aloha.browser.msie && Aloha.browser.version < 8) { 7763 br.parentNode.removeAttribute("style"); 7764 } 7765 } 7766 }; 7767 7768 //@} 7769 ///// The insertOrderedList command ///// 7770 //@{ 7771 commands.insertorderedlist = { 7772 // "Toggle lists with tag name "ol"." 7773 action: function (value, range) { 7774 toggleLists("ol", range); 7775 }, 7776 // "True if the selection's list state is "mixed" or "mixed ol", false 7777 // otherwise." 7778 indeterm: function () { 7779 return (/^mixed( ol)?$/).test(getSelectionListState()); 7780 }, 7781 // "True if the selection's list state is "ol", false otherwise." 7782 state: function () { 7783 return getSelectionListState() == "ol"; 7784 7785 } 7786 }; 7787 7788 var listRelatedElements = { 7789 "LI": true, 7790 "DT": true, 7791 "DD": true 7792 }; 7793 7794 //@} 7795 ///// The insertParagraph command ///// 7796 //@{ 7797 commands.insertparagraph = { 7798 action: function (value, range) { 7799 var i; 7800 7801 // "Delete the contents of the active range." 7802 deleteContents(range); 7803 7804 // clean lists in the editing host, this will remove any whitespace nodes around lists 7805 // because the following algorithm is not prepared to deal with them 7806 cleanLists(getEditingHostOf(range.startContainer), range); 7807 7808 // "If the active range's start node is neither editable nor an editing 7809 // host, abort these steps." 7810 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 7811 return; 7812 } 7813 7814 // "Let node and offset be the active range's start node and offset." 7815 var node = range.startContainer; 7816 var offset = range.startOffset; 7817 7818 // "If node is a Text node, and offset is neither 0 nor the length of 7819 // node, call splitText(offset) on node." 7820 if (node.nodeType == $_.Node.TEXT_NODE && offset != 0 && offset != getNodeLength(node)) { 7821 splitText(node, offset); 7822 } 7823 7824 // "If node is a Text node and offset is its length, set offset to one 7825 // plus the index of node, then set node to its parent." 7826 if (node.nodeType == $_.Node.TEXT_NODE && offset == getNodeLength(node)) { 7827 offset = 1 + Dom.getIndexInParent(node); 7828 node = node.parentNode; 7829 } 7830 7831 // "If node is a Text or Comment node, set offset to the index of node, 7832 // then set node to its parent." 7833 if (node.nodeType == $_.Node.TEXT_NODE || node.nodeType == $_.Node.COMMENT_NODE) { 7834 offset = Dom.getIndexInParent(node); 7835 node = node.parentNode; 7836 } 7837 7838 // "Call collapse(node, offset) on the context object's Selection." 7839 Aloha.getSelection().collapse(node, offset); 7840 range.setStart(node, offset); 7841 range.setEnd(node, offset); 7842 7843 // "Let container equal node." 7844 var container = node; 7845 7846 // "While container is not a single-line container, and container's 7847 // parent is editable and in the same editing host as node, set 7848 // container to its parent." 7849 while (!isSingleLineContainer(container) && isEditable(container.parentNode) && inSameEditingHost(node, container.parentNode)) { 7850 container = container.parentNode; 7851 } 7852 7853 // "If container is not editable or not in the same editing host as 7854 // node or is not a single-line container:" 7855 if (!isEditable(container) || !inSameEditingHost(container, node) || !isSingleLineContainer(container)) { 7856 // "Let tag be the default single-line container name." 7857 var tag = defaultSingleLineContainerName; 7858 7859 // "Block-extend the active range, and let new range be the 7860 // result." 7861 var newRange = blockExtend(range); 7862 7863 // "Let node list be a list of nodes, initially empty." 7864 // 7865 // "Append to node list the first node in tree order that is 7866 // contained in new range and is an allowed child of "p", if any." 7867 var nodeList = getContainedNodes(newRange, function (node) { 7868 return isAllowedChild(node, "p"); 7869 }).slice(0, 1); 7870 7871 // "If node list is empty:" 7872 if (!nodeList.length) { 7873 // "If tag is not an allowed child of the active range's start 7874 // node, abort these steps." 7875 if (!isAllowedChild(tag, range.startContainer)) { 7876 return; 7877 } 7878 7879 // "Set container to the result of calling createElement(tag) 7880 // on the context object." 7881 container = document.createElement(tag); 7882 7883 // "Call insertNode(container) on the active range." 7884 range.insertNode(container); 7885 7886 // "Call createElement("br") on the context object, and append 7887 // the result as the last child of container." 7888 // TODO not always 7889 container.appendChild(createEndBreak()); 7890 7891 // "Call collapse(container, 0) on the context object's 7892 // Selection." 7893 // TODO: remove selection from command 7894 Aloha.getSelection().collapse(container, 0); 7895 range.setStart(container, 0); 7896 range.setEnd(container, 0); 7897 7898 // "Abort these steps." 7899 return; 7900 } 7901 7902 // "While the nextSibling of the last member of node list is not 7903 // null and is an allowed child of "p", append it to node list." 7904 while (nodeList[nodeList.length - 1].nextSibling && isAllowedChild(nodeList[nodeList.length - 1].nextSibling, "p")) { 7905 nodeList.push(nodeList[nodeList.length - 1].nextSibling); 7906 } 7907 7908 // "Wrap node list, with sibling criteria returning false and new 7909 // parent instructions returning the result of calling 7910 // createElement(tag) on the context object. Set container to the 7911 // result." 7912 container = wrap( 7913 nodeList, 7914 function () { 7915 return false; 7916 }, 7917 function () { 7918 return document.createElement(tag); 7919 }, 7920 range 7921 ); 7922 } 7923 7924 // If no container has been set yet, it is not possible to insert a paragraph at this position; 7925 // the following steps are skipped in order to prevent critical errors from occurring; 7926 if (!container) { 7927 return; 7928 } 7929 7930 // "If container's local name is "address", "listing", or "pre":" 7931 var oldHeight, newHeight; 7932 if (container.tagName == "ADDRESS" || container.tagName == "LISTING" || container.tagName == "PRE") { 7933 // "Let br be the result of calling createElement("br") on the 7934 // context object." 7935 var br = document.createElement("br"); 7936 7937 // remember the old height 7938 oldHeight = container.offsetHeight; 7939 7940 // "Call insertNode(br) on the active range." 7941 range.insertNode(br); 7942 7943 // determine the new height 7944 newHeight = container.offsetHeight; 7945 7946 // "Call collapse(node, offset + 1) on the context object's 7947 // Selection." 7948 Aloha.getSelection().collapse(node, offset + 1); 7949 range.setStart(node, offset + 1); 7950 range.setEnd(node, offset + 1); 7951 7952 // "If br is the last descendant of container, let br be the result 7953 // of calling createElement("br") on the context object, then call 7954 // insertNode(br) on the active range." (Fix: only do this, if the container height did not change by inserting a single <br/>) 7955 // 7956 // Work around browser bugs: some browsers select the 7957 // newly-inserted node, not per spec. 7958 if (oldHeight == newHeight && !isDescendant(nextNode(br), container)) { 7959 // TODO check 7960 range.insertNode(createEndBreak()); 7961 Aloha.getSelection().collapse(node, offset + 1); 7962 range.setEnd(node, offset + 1); 7963 } 7964 7965 // "Abort these steps." 7966 return; 7967 } 7968 7969 // "If container's local name is "li", "dt", or "dd"; and either it has 7970 // no children or it has a single child and that child is a br:" 7971 if (listRelatedElements[container.tagName] && (!container.hasChildNodes() || (container.childNodes.length == 1 && isNamedHtmlElement(container.firstChild, "br")))) { 7972 // "Split the parent of the one-node list consisting of container." 7973 splitParent([container], range); 7974 7975 // "If container has no children, call createElement("br") on the 7976 // context object and append the result as the last child of 7977 // container." 7978 // only do this, if inserting the br does NOT modify the offset height of the container 7979 // if (!container.hasChildNodes()) { 7980 // var oldHeight = container.offsetHeight, endBr = createEndBreak(); 7981 // container.appendChild(endBr); 7982 // if (container.offsetHeight !== oldHeight) { 7983 // container.removeChild(endBr); 7984 // } 7985 // } 7986 7987 // "If container is a dd or dt, and it is not an allowed child of 7988 // any of its ancestors in the same editing host, set the tag name 7989 // of container to the default single-line container name and let 7990 // container be the result." 7991 if (isHtmlElementInArray(container, ["dd", "dt"]) && $_(getAncestors(container)).every(function (ancestor) { return !inSameEditingHost(container, ancestor) || !isAllowedChild(container, ancestor); })) { 7992 container = setTagName(container, defaultSingleLineContainerName, range); 7993 } 7994 7995 // "Fix disallowed ancestors of container." 7996 fixDisallowedAncestors(container, range); 7997 7998 // fix invalid nested lists 7999 if (isNamedHtmlElement(container, 'li') && isNamedHtmlElement(container.nextSibling, "li") && isHtmlElementInArray(container.nextSibling.firstChild, ["ol", "ul"])) { 8000 // we found a li containing only a br followed by a li containing a list as first element: merge the two li's 8001 var listParent = container.nextSibling, 8002 length = container.nextSibling.childNodes.length; 8003 for (i = 0; i < length; i++) { 8004 // we always move the first child into the container 8005 container.appendChild(listParent.childNodes[0]); 8006 } 8007 listParent.parentNode.removeChild(listParent); 8008 } 8009 8010 // "Abort these steps." 8011 return; 8012 } 8013 8014 // special behaviour when pressing enter in the last empty paragraph, that is nested in a blockquote 8015 if (isNamedHtmlElement(container, "p") 8016 && isNamedHtmlElement(container.parentNode, "blockquote") 8017 && !container.nextSibling 8018 && (!container.hasChildNodes() 8019 || (container.childNodes.length === 1 8020 && isNamedHtmlElement(container.firstChild, "br")))) { 8021 jQuery(container.parentNode).after(container); 8022 return; 8023 } 8024 8025 // "Let new line range be a new range whose start is the same as 8026 // the active range's, and whose end is (container, length of 8027 // container)." 8028 var newLineRange = Aloha.createRange(); 8029 newLineRange.setStart(range.startContainer, range.startOffset); 8030 newLineRange.setEnd(container, getNodeLength(container)); 8031 8032 // "While new line range's start offset is zero and its start node is 8033 // not container, set its start to (parent of start node, index of 8034 // start node)." 8035 while (newLineRange.startOffset == 0 && newLineRange.startContainer != container) { 8036 newLineRange.setStart(newLineRange.startContainer.parentNode, Dom.getIndexInParent(newLineRange.startContainer)); 8037 } 8038 8039 // "While new line range's start offset is the length of its start node 8040 // and its start node is not container, set its start to (parent of 8041 // start node, 1 + index of start node)." 8042 while (newLineRange.startOffset == getNodeLength(newLineRange.startContainer) && newLineRange.startContainer != container) { 8043 newLineRange.setStart(newLineRange.startContainer.parentNode, 1 + Dom.getIndexInParent(newLineRange.startContainer)); 8044 } 8045 8046 // "Let end of line be true if new line range contains either nothing 8047 // or a single br, and false otherwise." 8048 var containedInNewLineRange = getContainedNodes(newLineRange); 8049 var endOfLine = !containedInNewLineRange.length || (containedInNewLineRange.length == 1 && isNamedHtmlElement(containedInNewLineRange[0], "br")); 8050 8051 // "If the local name of container is "h1", "h2", "h3", "h4", "h5", or 8052 // "h6", and end of line is true, let new container name be the default 8053 // single-line container name." 8054 var newContainerName; 8055 if (/^H[1-6]$/.test(container.tagName) && endOfLine) { 8056 newContainerName = defaultSingleLineContainerName; 8057 8058 // "Otherwise, if the local name of container is "dt" and end of line 8059 // is true, let new container name be "dd"." 8060 } else if (container.tagName == "DT" && endOfLine) { 8061 newContainerName = "dd"; 8062 8063 // "Otherwise, if the local name of container is "dd" and end of line 8064 // is true, let new container name be "dt"." 8065 } else if (container.tagName == "DD" && endOfLine) { 8066 newContainerName = "dt"; 8067 8068 // "Otherwise, let new container name be the local name of container." 8069 } else { 8070 newContainerName = container.tagName.toLowerCase(); 8071 } 8072 8073 // "Let new container be the result of calling createElement(new 8074 // container name) on the context object." 8075 var newContainer = document.createElement(newContainerName); 8076 8077 // "Copy all non empty attributes of the container to new container." 8078 copyAttributes(container, newContainer); 8079 8080 // "If new container has an id attribute, unset it." 8081 newContainer.removeAttribute("id"); 8082 8083 // "Insert new container into the parent of container immediately after 8084 // container." 8085 container.parentNode.insertBefore(newContainer, container.nextSibling); 8086 8087 // "Let contained nodes be all nodes contained in new line range." 8088 var containedNodes = getAllContainedNodes(newLineRange); 8089 8090 // "Let frag be the result of calling extractContents() on new line 8091 // range." 8092 var frag = newLineRange.extractContents(); 8093 8094 // "Unset the id attribute (if any) of each Element descendant of frag 8095 // that is not in contained nodes." 8096 var descendants = getDescendants(frag); 8097 for (i = 0; i < descendants.length; i++) { 8098 if (descendants[i].nodeType == $_.Node.ELEMENT_NODE && $_(containedNodes).indexOf(descendants[i]) == -1) { 8099 descendants[i].removeAttribute("id"); 8100 } 8101 } 8102 8103 var fragChildren = [], 8104 fragChild = frag.firstChild; 8105 if (fragChild) { 8106 do { 8107 if (!isWhitespaceNode(fragChild)) { 8108 fragChildren.push(fragChild); 8109 } 8110 } while (null != (fragChild = fragChild.nextSibling)); 8111 } 8112 8113 // 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) 8114 if (isNamedHtmlElement(newContainer, 'li') && fragChildren.length && isHtmlElementInArray(fragChildren[0], ["ul", "ol"])) { 8115 oldHeight = newContainer.offsetHeight; 8116 var endBr = createEndBreak(); 8117 newContainer.appendChild(endBr); 8118 newHeight = newContainer.offsetHeight; 8119 if (oldHeight !== newHeight) { 8120 newContainer.removeChild(endBr); 8121 } 8122 } 8123 8124 // "Call appendChild(frag) on new container." 8125 newContainer.appendChild(frag); 8126 8127 // "If container has no visible children, call createElement("br") on 8128 // the context object, and append the result as the last child of 8129 // container." 8130 ensureContainerEditable(container); 8131 8132 // "If new container has no visible children, call createElement("br") 8133 // on the context object, and append the result as the last child of 8134 // new container." 8135 ensureContainerEditable(newContainer); 8136 8137 // "Call collapse(new container, 0) on the context object's Selection." 8138 Aloha.getSelection().collapse(newContainer, 0); 8139 range.setStart(newContainer, 0); 8140 range.setEnd(newContainer, 0); 8141 } 8142 }; 8143 8144 //@} 8145 ///// The insertText command ///// 8146 //@{ 8147 commands.inserttext = { 8148 action: function (value, range) { 8149 var i; 8150 8151 // "Delete the contents of the active range, with strip wrappers 8152 // false." 8153 deleteContents(range, { 8154 stripWrappers: false 8155 }); 8156 8157 // "If the active range's start node is neither editable nor an editing 8158 // host, abort these steps." 8159 if (!isEditable(range.startContainer) && !isEditingHost(range.startContainer)) { 8160 return; 8161 } 8162 8163 // "If value's length is greater than one:" 8164 if (value.length > 1) { 8165 // "For each element el in value, take the action for the 8166 // insertText command, with value equal to el." 8167 for (i = 0; i < value.length; i++) { 8168 commands.inserttext.action(value[i], range); 8169 } 8170 8171 // "Abort these steps." 8172 return; 8173 } 8174 8175 // "If value is the empty string, abort these steps." 8176 if (value == "") { 8177 return; 8178 } 8179 8180 // "If value is a newline (U+00A0), take the action for the 8181 // insertParagraph command and abort these steps." 8182 if (value == "\n") { 8183 commands.insertparagraph.action('', range); 8184 return; 8185 } 8186 8187 // "Let node and offset be the active range's start node and offset." 8188 var node = range.startContainer; 8189 var offset = range.startOffset; 8190 8191 // "If node has a child whose index is offset − 1, and that child is a 8192 // Text node, set node to that child, then set offset to node's 8193 // length." 8194 if (0 <= offset - 1 && offset - 1 < node.childNodes.length && node.childNodes[offset - 1].nodeType == $_.Node.TEXT_NODE) { 8195 node = node.childNodes[offset - 1]; 8196 offset = getNodeLength(node); 8197 } 8198 8199 // "If node has a child whose index is offset, and that child is a Text 8200 // node, set node to that child, then set offset to zero." 8201 if (0 <= offset && offset < node.childNodes.length && node.childNodes[offset].nodeType == $_.Node.TEXT_NODE) { 8202 node = node.childNodes[offset]; 8203 offset = 0; 8204 } 8205 8206 // "If value is a space (U+0020), and either node is an Element whose 8207 // resolved value for "white-space" is neither "pre" nor "pre-wrap" or 8208 // node is not an Element but its parent is an Element whose resolved 8209 // value for "white-space" is neither "pre" nor "pre-wrap", set value 8210 // to a non-breaking space (U+00A0)." 8211 var refElement = node.nodeType == $_.Node.ELEMENT_NODE ? node : node.parentNode; 8212 if (value == " " && refElement.nodeType == $_.Node.ELEMENT_NODE && jQuery.inArray($_.getComputedStyle(refElement).whiteSpace, ["pre", "pre-wrap"]) == -1) { 8213 value = "\xa0"; 8214 } 8215 8216 // "Record current overrides, and let overrides be the result." 8217 var overrides = recordCurrentOverrides(range); 8218 8219 // "If node is a Text node:" 8220 if (node.nodeType == $_.Node.TEXT_NODE) { 8221 // "Call insertData(offset, value) on node." 8222 node.insertData(offset, value); 8223 8224 // "Call collapse(node, offset) on the context object's Selection." 8225 Aloha.getSelection().collapse(node, offset); 8226 range.setStart(node, offset); 8227 8228 // "Call extend(node, offset + 1) on the context object's 8229 // Selection." 8230 Aloha.getSelection().extend(node, offset + 1); 8231 range.setEnd(node, offset + 1); 8232 8233 // "Otherwise:" 8234 } else { 8235 // "If node has only one child, which is a collapsed line break, 8236 // remove its child from it." 8237 // 8238 // FIXME: IE incorrectly returns false here instead of true 8239 // sometimes? 8240 if (node.childNodes.length == 1 && isCollapsedLineBreak(node.firstChild)) { 8241 node.removeChild(node.firstChild); 8242 } 8243 8244 // "Let text be the result of calling createTextNode(value) on the 8245 // context object." 8246 var text = document.createTextNode(value); 8247 8248 // "Call insertNode(text) on the active range." 8249 range.insertNode(text); 8250 8251 // "Call collapse(text, 0) on the context object's Selection." 8252 Aloha.getSelection().collapse(text, 0); 8253 range.setStart(text, 0); 8254 8255 // "Call extend(text, 1) on the context object's Selection." 8256 Aloha.getSelection().extend(text, 1); 8257 range.setEnd(text, 1); 8258 } 8259 8260 // "Restore states and values from overrides." 8261 restoreStatesAndValues(overrides, range); 8262 8263 // "Canonicalize whitespace at the active range's start." 8264 canonicalizeWhitespace(range.startContainer, range.startOffset); 8265 8266 // "Canonicalize whitespace at the active range's end." 8267 canonicalizeWhitespace(range.endContainer, range.endOffset); 8268 8269 // "Call collapseToEnd() on the context object's Selection." 8270 Aloha.getSelection().collapseToEnd(); 8271 range.collapse(false); 8272 } 8273 }; 8274 8275 //@} 8276 ///// The insertUnorderedList command ///// 8277 //@{ 8278 commands.insertunorderedlist = { 8279 // "Toggle lists with tag name "ul"." 8280 action: function (value, range) { 8281 toggleLists("ul", range); 8282 }, 8283 // "True if the selection's list state is "mixed" or "mixed ul", false 8284 // otherwise." 8285 indeterm: function () { 8286 return (/^mixed( ul)?$/).test(getSelectionListState()); 8287 }, 8288 // "True if the selection's list state is "ul", false otherwise." 8289 state: function () { 8290 return getSelectionListState() == "ul"; 8291 } 8292 }; 8293 8294 //@} 8295 ///// The justifyCenter command ///// 8296 //@{ 8297 commands.justifycenter = { 8298 // "Justify the selection with alignment "center"." 8299 action: function (value, range) { 8300 justifySelection("center", range); 8301 }, 8302 indeterm: function () { 8303 // "Block-extend the active range. Return true if among visible 8304 // editable nodes that are contained in the result and have no 8305 // children, at least one has alignment value "center" and at least one 8306 // does not. Otherwise return false." 8307 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8308 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8309 }); 8310 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "center"; }) 8311 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "center"; }); 8312 }, 8313 state: function () { 8314 // "Block-extend the active range. Return true if there is at least one 8315 // visible editable node that is contained in the result and has no 8316 // children, and all such nodes have alignment value "center". 8317 // Otherwise return false." 8318 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8319 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8320 }); 8321 return nodes.length && $_(nodes).every(function (node) { 8322 return getAlignmentValue(node) == "center"; 8323 }); 8324 }, 8325 value: function () { 8326 // "Block-extend the active range, and return the alignment value of 8327 // the first visible editable node that is contained in the result and 8328 // has no children. If there is no such node, return "left"." 8329 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8330 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8331 }); 8332 if (nodes.length) { 8333 return getAlignmentValue(nodes[0]); 8334 } 8335 return "left"; 8336 } 8337 }; 8338 8339 //@} 8340 ///// The justifyFull command ///// 8341 //@{ 8342 commands.justifyfull = { 8343 // "Justify the selection with alignment "justify"." 8344 action: function (value, range) { 8345 justifySelection("justify", range); 8346 }, 8347 indeterm: function () { 8348 // "Block-extend the active range. Return true if among visible 8349 // editable nodes that are contained in the result and have no 8350 // children, at least one has alignment value "justify" and at least 8351 // one does not. Otherwise return false." 8352 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8353 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8354 }); 8355 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "justify"; }) 8356 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "justify"; }); 8357 }, 8358 state: function () { 8359 // "Block-extend the active range. Return true if there is at least one 8360 // visible editable node that is contained in the result and has no 8361 // children, and all such nodes have alignment value "justify". 8362 // Otherwise return false." 8363 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8364 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8365 }); 8366 return nodes.length && $_(nodes).every(function (node) { 8367 return getAlignmentValue(node) == "justify"; 8368 }); 8369 }, 8370 value: function () { 8371 // "Block-extend the active range, and return the alignment value of 8372 // the first visible editable node that is contained in the result and 8373 // has no children. If there is no such node, return "left"." 8374 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8375 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8376 }); 8377 if (nodes.length) { 8378 return getAlignmentValue(nodes[0]); 8379 } 8380 return "left"; 8381 } 8382 }; 8383 8384 //@} 8385 ///// The justifyLeft command ///// 8386 //@{ 8387 commands.justifyleft = { 8388 // "Justify the selection with alignment "left"." 8389 action: function (value, range) { 8390 justifySelection("left", range); 8391 }, 8392 indeterm: function () { 8393 // "Block-extend the active range. Return true if among visible 8394 // editable nodes that are contained in the result and have no 8395 // children, at least one has alignment value "left" and at least one 8396 // does not. Otherwise return false." 8397 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8398 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8399 }); 8400 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "left"; }) 8401 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "left"; }); 8402 }, 8403 state: function () { 8404 // "Block-extend the active range. Return true if there is at least one 8405 // visible editable node that is contained in the result and has no 8406 // children, and all such nodes have alignment value "left". Otherwise 8407 // return false." 8408 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8409 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8410 }); 8411 return nodes.length && $_(nodes).every(function (node) { 8412 return getAlignmentValue(node) == "left"; 8413 }); 8414 }, 8415 value: function () { 8416 // "Block-extend the active range, and return the alignment value of 8417 // the first visible editable node that is contained in the result and 8418 // has no children. If there is no such node, return "left"." 8419 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8420 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8421 }); 8422 if (nodes.length) { 8423 return getAlignmentValue(nodes[0]); 8424 } 8425 return "left"; 8426 } 8427 }; 8428 8429 //@} 8430 ///// The justifyRight command ///// 8431 //@{ 8432 commands.justifyright = { 8433 // "Justify the selection with alignment "right"." 8434 action: function (value, range) { 8435 justifySelection("right", range); 8436 }, 8437 indeterm: function () { 8438 // "Block-extend the active range. Return true if among visible 8439 // editable nodes that are contained in the result and have no 8440 // children, at least one has alignment value "right" and at least one 8441 // does not. Otherwise return false." 8442 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8443 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8444 }); 8445 return $_(nodes).some(function (node) { return getAlignmentValue(node) == "right"; }) 8446 && $_(nodes).some(function (node) { return getAlignmentValue(node) != "right"; }); 8447 }, 8448 state: function () { 8449 // "Block-extend the active range. Return true if there is at least one 8450 // visible editable node that is contained in the result and has no 8451 // children, and all such nodes have alignment value "right". 8452 // Otherwise return false." 8453 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8454 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8455 }); 8456 return nodes.length && $_(nodes).every(function (node) { 8457 return getAlignmentValue(node) == "right"; 8458 }); 8459 }, 8460 value: function () { 8461 // "Block-extend the active range, and return the alignment value of 8462 // the first visible editable node that is contained in the result and 8463 // has no children. If there is no such node, return "left"." 8464 var nodes = getAllContainedNodes(blockExtend(getActiveRange()), function (node) { 8465 return isEditable(node) && isVisible(node) && !node.hasChildNodes(); 8466 }); 8467 if (nodes.length) { 8468 return getAlignmentValue(nodes[0]); 8469 } 8470 return "left"; 8471 } 8472 }; 8473 8474 //@} 8475 ///// The outdent command ///// 8476 //@{ 8477 commands.outdent = { 8478 action: function () { 8479 // "Let items be a list of all lis that are ancestor containers of the 8480 // range's start and/or end node." 8481 // 8482 // It's annoying to get this in tree order using functional stuff 8483 // without doing getDescendants(document), which is slow, so I do it 8484 // imperatively. 8485 var items = []; 8486 (function () { 8487 var ancestorContainer; 8488 for (ancestorContainer = getActiveRange().endContainer; 8489 ancestorContainer != getActiveRange().commonAncestorContainer; 8490 ancestorContainer = ancestorContainer.parentNode) { 8491 if (isNamedHtmlElement(ancestorContainer, "li")) { 8492 items.unshift(ancestorContainer); 8493 } 8494 } 8495 for (ancestorContainer = getActiveRange().startContainer; 8496 ancestorContainer; 8497 ancestorContainer = ancestorContainer.parentNode) { 8498 if (isNamedHtmlElement(ancestorContainer, "li")) { 8499 items.unshift(ancestorContainer); 8500 } 8501 } 8502 }()); 8503 8504 // "For each item in items, normalize sublists of item." 8505 $_(items).forEach(function (thisArg) { 8506 normalizeSublists(thisArg, getActiveRange()); 8507 }); 8508 8509 // "Block-extend the active range, and let new range be the result." 8510 var newRange = blockExtend(getActiveRange()); 8511 8512 // "Let node list be a list of nodes, initially empty." 8513 // 8514 // "For each node node contained in new range, append node to node list 8515 // if the last member of node list (if any) is not an ancestor of node; 8516 // node is editable; and either node has no editable descendants, or is 8517 // an ol or ul, or is an li whose parent is an ol or ul." 8518 var nodeList = getContainedNodes(newRange, function (node) { 8519 return isEditable(node) && (!$_(getDescendants(node)).some(isEditable) || isHtmlElementInArray(node, ["ol", "ul"]) || (isNamedHtmlElement(node, 'li') && isHtmlElementInArray(node.parentNode, ["ol", "ul"]))); 8520 }); 8521 8522 // "While node list is not empty:" 8523 while (nodeList.length) { 8524 // "While the first member of node list is an ol or ul or is not 8525 // the child of an ol or ul, outdent it and remove it from node 8526 // list." 8527 while (nodeList.length && (isHtmlElementInArray(nodeList[0], ["OL", "UL"]) || !isHtmlElementInArray(nodeList[0].parentNode, ["OL", "UL"]))) { 8528 outdentNode(nodeList.shift(), newRange); 8529 } 8530 8531 // "If node list is empty, break from these substeps." 8532 if (!nodeList.length) { 8533 break; 8534 } 8535 8536 // "Let sublist be a list of nodes, initially empty." 8537 var sublist = []; 8538 8539 // "Remove the first member of node list and append it to sublist." 8540 sublist.push(nodeList.shift()); 8541 8542 // "While the first member of node list is the nextSibling of the 8543 // last member of sublist, and the first member of node list is not 8544 // an ol or ul, remove the first member of node list and append it 8545 // to sublist." 8546 while (nodeList.length && nodeList[0] == sublist[sublist.length - 1].nextSibling && !isHtmlElementInArray(nodeList[0], ["OL", "UL"])) { 8547 sublist.push(nodeList.shift()); 8548 } 8549 8550 // "Record the values of sublist, and let values be the result." 8551 var values = recordValues(sublist); 8552 8553 // "Split the parent of sublist, with new parent null." 8554 splitParent(sublist, newRange); 8555 8556 // "Fix disallowed ancestors of each member of sublist." 8557 $_(sublist).forEach(fixDisallowedAncestors); 8558 8559 // "Restore the values from values." 8560 restoreValues(values, newRange); 8561 } 8562 } 8563 }; 8564 8565 //@} 8566 8567 ////////////////////////////////// 8568 ///// Miscellaneous commands ///// 8569 ////////////////////////////////// 8570 8571 ///// The selectAll command ///// 8572 //@{ 8573 commands.selectall = { 8574 // Note, this ignores the whole globalRange/getActiveRange() thing and 8575 // works with actual selections. Not suitable for autoimplementation.html. 8576 action: function () { 8577 // "Let target be the body element of the context object." 8578 var target = document.body; 8579 8580 // "If target is null, let target be the context object's 8581 // documentElement." 8582 if (!target) { 8583 target = document.documentElement; 8584 } 8585 8586 // "If target is null, call getSelection() on the context object, and 8587 // call removeAllRanges() on the result." 8588 if (!target) { 8589 Aloha.getSelection().removeAllRanges(); 8590 8591 // "Otherwise, call getSelection() on the context object, and call 8592 // selectAllChildren(target) on the result." 8593 } else { 8594 Aloha.getSelection().selectAllChildren(target); 8595 } 8596 } 8597 }; 8598 8599 //@} 8600 ///// The styleWithCSS command ///// 8601 //@{ 8602 commands.stylewithcss = { 8603 action: function (value) { 8604 // "If value is an ASCII case-insensitive match for the string 8605 // "false", set the CSS styling flag to false. Otherwise, set the 8606 // CSS styling flag to true." 8607 cssStylingFlag = String(value).toLowerCase() != "false"; 8608 }, 8609 state: function () { 8610 return cssStylingFlag; 8611 } 8612 }; 8613 8614 //@} 8615 ///// The useCSS command ///// 8616 //@{ 8617 commands.usecss = { 8618 action: function (value) { 8619 // "If value is an ASCII case-insensitive match for the string "false", 8620 // set the CSS styling flag to true. Otherwise, set the CSS styling 8621 // flag to false." 8622 cssStylingFlag = String(value).toLowerCase() == "false"; 8623 } 8624 }; 8625 //@} 8626 8627 // Some final setup 8628 //@{ 8629 (function () { 8630 // Opera 11.50 doesn't implement Object.keys, so I have to make an explicit 8631 // temporary, which means I need an extra closure to not leak the temporaries 8632 // into the global namespace. >:( 8633 var commandNames = []; 8634 var command; 8635 for (command in commands) { 8636 if (commands.hasOwnProperty(command)) { 8637 commandNames.push(command); 8638 } 8639 } 8640 $_(commandNames).forEach(function (command) { 8641 // "If a command does not have a relevant CSS property specified, it 8642 // defaults to null." 8643 if (null == commands[command].relevantCssProperty) { 8644 commands[command].relevantCssProperty = null; 8645 } 8646 8647 // "If a command has inline command activated values defined but 8648 // nothing else defines when it is indeterminate, it is indeterminate 8649 // if among editable Text nodes effectively contained in the active 8650 // range, there is at least one whose effective command value is one of 8651 // the given values and at least one whose effective command value is 8652 // not one of the given values." 8653 if (null != commands[command].inlineCommandActivatedValues && null == commands[command].indeterm) { 8654 commands[command].indeterm = function (range) { 8655 var values = $_(getAllEffectivelyContainedNodes(range, function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; })) 8656 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8657 8658 var matchingValues = $_(values).filter(function (value) { 8659 return $_(commands[command].inlineCommandActivatedValues).indexOf(value) != -1; 8660 }); 8661 8662 return matchingValues.length >= 1 && values.length - matchingValues.length >= 1; 8663 }; 8664 } 8665 8666 // "If a command has inline command activated values defined, its state 8667 // is true if either no editable Text node is effectively contained in 8668 // the active range, and the active range's start node's effective 8669 // command value is one of the given values; or if there is at least 8670 // one editable Text node effectively contained in the active range, 8671 // and all of them have an effective command value equal to one of the 8672 // given values." 8673 if (null != commands[command].inlineCommandActivatedValues) { 8674 commands[command].state = function (range) { 8675 var nodes = getAllEffectivelyContainedNodes(range, function (node) { 8676 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8677 }); 8678 8679 if (nodes.length == 0) { 8680 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(range.startContainer, command)) != -1; 8681 } 8682 return $_(nodes).every(function (node) { 8683 return $_(commands[command].inlineCommandActivatedValues).indexOf(getEffectiveCommandValue(node, command)) != -1; 8684 }); 8685 }; 8686 } 8687 8688 // "If a command is a standard inline value command, it is 8689 // indeterminate if among editable Text nodes that are effectively 8690 // contained in the active range, there are two that have distinct 8691 // effective command values. Its value is the effective command value 8692 // of the first editable Text node that is effectively contained in the 8693 // active range, or if there is no such node, the effective command 8694 // value of the active range's start node." 8695 if (null != commands[command].standardInlineValueCommand) { 8696 commands[command].indeterm = function () { 8697 var values = $_(getAllEffectivelyContainedNodes(getActiveRange())).filter(function (node) { return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; }, true) 8698 .map(function (node) { return getEffectiveCommandValue(node, command); }); 8699 var i; 8700 for (i = 1; i < values.length; i++) { 8701 if (values[i] != values[i - 1]) { 8702 return true; 8703 } 8704 } 8705 return false; 8706 }; 8707 8708 commands[command].value = function (range) { 8709 var refNode = getAllEffectivelyContainedNodes(range, function (node) { 8710 return isEditable(node) && node.nodeType == $_.Node.TEXT_NODE; 8711 })[0]; 8712 8713 if (typeof refNode == "undefined") { 8714 refNode = range.startContainer; 8715 } 8716 8717 return getEffectiveCommandValue(refNode, command); 8718 }; 8719 } 8720 }); 8721 }()); 8722 //@} 8723 return { 8724 commands: commands, 8725 execCommand: myExecCommand, 8726 queryCommandIndeterm: myQueryCommandIndeterm, 8727 queryCommandState: myQueryCommandState, 8728 queryCommandValue: myQueryCommandValue, 8729 queryCommandEnabled: myQueryCommandEnabled, 8730 queryCommandSupported: myQueryCommandSupported, 8731 copyAttributes: copyAttributes, 8732 createEndBreak: createEndBreak, 8733 isEndBreak: isEndBreak, 8734 ensureContainerEditable: ensureContainerEditable, 8735 isEditingHost: isEditingHost, 8736 isEditable: isEditable, 8737 getStateOverride: getStateOverride, 8738 setStateOverride: setStateOverride, 8739 resetOverrides: resetOverrides, 8740 unsetStateOverride: unsetStateOverride 8741 }; 8742 }); // end define 8743 // vim: foldmarker=@{,@} foldmethod=marker 8744