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