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