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| 1 /* | |
| 2 * Copyright (C) 2007 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
| 15 * its contributors may be used to endorse or promote products derived | |
| 16 * from this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 * | |
| 29 * Contains diff method based on Javascript Diff Algorithm By John Resig | |
| 30 * http://ejohn.org/files/jsdiff.js (released under the MIT license). | |
| 31 */ | |
| 32 /** | |
| 33 * @param {number} offset | |
| 34 * @param {string} stopCharacters | |
| 35 * @param {!Node} stayWithinNode | |
| 36 * @param {string=} direction | |
| 37 * @return {!Range} | |
| 38 */ | |
| 39 Node.prototype.rangeOfWord = function(offset, stopCharacters, stayWithinNode, di
rection) { | |
| 40 var startNode; | |
| 41 var startOffset = 0; | |
| 42 var endNode; | |
| 43 var endOffset = 0; | |
| 44 | |
| 45 if (!stayWithinNode) | |
| 46 stayWithinNode = this; | |
| 47 | |
| 48 if (!direction || direction === 'backward' || direction === 'both') { | |
| 49 var node = this; | |
| 50 while (node) { | |
| 51 if (node === stayWithinNode) { | |
| 52 if (!startNode) | |
| 53 startNode = stayWithinNode; | |
| 54 break; | |
| 55 } | |
| 56 | |
| 57 if (node.nodeType === Node.TEXT_NODE) { | |
| 58 var start = (node === this ? (offset - 1) : (node.nodeValue.length - 1))
; | |
| 59 for (var i = start; i >= 0; --i) { | |
| 60 if (stopCharacters.indexOf(node.nodeValue[i]) !== -1) { | |
| 61 startNode = node; | |
| 62 startOffset = i + 1; | |
| 63 break; | |
| 64 } | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 if (startNode) | |
| 69 break; | |
| 70 | |
| 71 node = node.traversePreviousNode(stayWithinNode); | |
| 72 } | |
| 73 | |
| 74 if (!startNode) { | |
| 75 startNode = stayWithinNode; | |
| 76 startOffset = 0; | |
| 77 } | |
| 78 } else { | |
| 79 startNode = this; | |
| 80 startOffset = offset; | |
| 81 } | |
| 82 | |
| 83 if (!direction || direction === 'forward' || direction === 'both') { | |
| 84 node = this; | |
| 85 while (node) { | |
| 86 if (node === stayWithinNode) { | |
| 87 if (!endNode) | |
| 88 endNode = stayWithinNode; | |
| 89 break; | |
| 90 } | |
| 91 | |
| 92 if (node.nodeType === Node.TEXT_NODE) { | |
| 93 var start = (node === this ? offset : 0); | |
| 94 for (var i = start; i < node.nodeValue.length; ++i) { | |
| 95 if (stopCharacters.indexOf(node.nodeValue[i]) !== -1) { | |
| 96 endNode = node; | |
| 97 endOffset = i; | |
| 98 break; | |
| 99 } | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 if (endNode) | |
| 104 break; | |
| 105 | |
| 106 node = node.traverseNextNode(stayWithinNode); | |
| 107 } | |
| 108 | |
| 109 if (!endNode) { | |
| 110 endNode = stayWithinNode; | |
| 111 endOffset = stayWithinNode.nodeType === Node.TEXT_NODE ? stayWithinNode.no
deValue.length : | |
| 112 stayWithinNode.ch
ildNodes.length; | |
| 113 } | |
| 114 } else { | |
| 115 endNode = this; | |
| 116 endOffset = offset; | |
| 117 } | |
| 118 | |
| 119 var result = this.ownerDocument.createRange(); | |
| 120 result.setStart(startNode, startOffset); | |
| 121 result.setEnd(endNode, endOffset); | |
| 122 | |
| 123 return result; | |
| 124 }; | |
| 125 | |
| 126 /** | |
| 127 * @param {!Node=} stayWithin | |
| 128 * @return {?Node} | |
| 129 */ | |
| 130 Node.prototype.traverseNextTextNode = function(stayWithin) { | |
| 131 var node = this.traverseNextNode(stayWithin); | |
| 132 if (!node) | |
| 133 return null; | |
| 134 var nonTextTags = {'STYLE': 1, 'SCRIPT': 1}; | |
| 135 while (node && (node.nodeType !== Node.TEXT_NODE || nonTextTags[node.parentEle
ment.nodeName])) | |
| 136 node = node.traverseNextNode(stayWithin); | |
| 137 | |
| 138 return node; | |
| 139 }; | |
| 140 | |
| 141 /** | |
| 142 * @param {number|undefined} x | |
| 143 * @param {number|undefined} y | |
| 144 * @param {!Element=} relativeTo | |
| 145 */ | |
| 146 Element.prototype.positionAt = function(x, y, relativeTo) { | |
| 147 var shift = {x: 0, y: 0}; | |
| 148 if (relativeTo) | |
| 149 shift = relativeTo.boxInWindow(this.ownerDocument.defaultView); | |
| 150 | |
| 151 if (typeof x === 'number') | |
| 152 this.style.setProperty('left', (shift.x + x) + 'px'); | |
| 153 else | |
| 154 this.style.removeProperty('left'); | |
| 155 | |
| 156 if (typeof y === 'number') | |
| 157 this.style.setProperty('top', (shift.y + y) + 'px'); | |
| 158 else | |
| 159 this.style.removeProperty('top'); | |
| 160 | |
| 161 if (typeof x === 'number' || typeof y === 'number') | |
| 162 this.style.setProperty('position', 'absolute'); | |
| 163 else | |
| 164 this.style.removeProperty('position'); | |
| 165 }; | |
| 166 | |
| 167 /** | |
| 168 * @return {boolean} | |
| 169 */ | |
| 170 Element.prototype.isScrolledToBottom = function() { | |
| 171 // This code works only for 0-width border. | |
| 172 // The scrollTop, clientHeight and scrollHeight are computed in double values
internally. | |
| 173 // However, they are exposed to javascript differently, each being either roun
ded (via | |
| 174 // round, ceil or floor functions) or left intouch. | |
| 175 // This adds up a total error up to 2. | |
| 176 return Math.abs(this.scrollTop + this.clientHeight - this.scrollHeight) <= 2; | |
| 177 }; | |
| 178 | |
| 179 /** | |
| 180 * @param {!Array.<string>} nameArray | |
| 181 * @return {?Node} | |
| 182 */ | |
| 183 Node.prototype.enclosingNodeOrSelfWithNodeNameInArray = function(nameArray) { | |
| 184 for (var node = this; node && node !== this.ownerDocument; node = node.parentN
odeOrShadowHost()) { | |
| 185 for (var i = 0; i < nameArray.length; ++i) { | |
| 186 if (node.nodeName.toLowerCase() === nameArray[i].toLowerCase()) | |
| 187 return node; | |
| 188 } | |
| 189 } | |
| 190 return null; | |
| 191 }; | |
| 192 | |
| 193 /** | |
| 194 * @param {string} nodeName | |
| 195 * @return {?Node} | |
| 196 */ | |
| 197 Node.prototype.enclosingNodeOrSelfWithNodeName = function(nodeName) { | |
| 198 return this.enclosingNodeOrSelfWithNodeNameInArray([nodeName]); | |
| 199 }; | |
| 200 | |
| 201 /** | |
| 202 * @param {string} className | |
| 203 * @param {!Element=} stayWithin | |
| 204 * @return {?Element} | |
| 205 */ | |
| 206 Node.prototype.enclosingNodeOrSelfWithClass = function(className, stayWithin) { | |
| 207 return this.enclosingNodeOrSelfWithClassList([className], stayWithin); | |
| 208 }; | |
| 209 | |
| 210 /** | |
| 211 * @param {!Array.<string>} classNames | |
| 212 * @param {!Element=} stayWithin | |
| 213 * @return {?Element} | |
| 214 */ | |
| 215 Node.prototype.enclosingNodeOrSelfWithClassList = function(classNames, stayWithi
n) { | |
| 216 for (var node = this; node && node !== stayWithin && node !== this.ownerDocume
nt; | |
| 217 node = node.parentNodeOrShadowHost()) { | |
| 218 if (node.nodeType === Node.ELEMENT_NODE) { | |
| 219 var containsAll = true; | |
| 220 for (var i = 0; i < classNames.length && containsAll; ++i) { | |
| 221 if (!node.classList.contains(classNames[i])) | |
| 222 containsAll = false; | |
| 223 } | |
| 224 if (containsAll) | |
| 225 return /** @type {!Element} */ (node); | |
| 226 } | |
| 227 } | |
| 228 return null; | |
| 229 }; | |
| 230 | |
| 231 /** | |
| 232 * @return {?Element} | |
| 233 */ | |
| 234 Node.prototype.parentElementOrShadowHost = function() { | |
| 235 var node = this.parentNode; | |
| 236 if (!node) | |
| 237 return null; | |
| 238 if (node.nodeType === Node.ELEMENT_NODE) | |
| 239 return /** @type {!Element} */ (node); | |
| 240 if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) | |
| 241 return /** @type {!Element} */ (node.host); | |
| 242 return null; | |
| 243 }; | |
| 244 | |
| 245 /** | |
| 246 * @return {?Node} | |
| 247 */ | |
| 248 Node.prototype.parentNodeOrShadowHost = function() { | |
| 249 if (this.parentNode) | |
| 250 return this.parentNode; | |
| 251 if (this.nodeType === Node.DOCUMENT_FRAGMENT_NODE && this.host) | |
| 252 return this.host; | |
| 253 return null; | |
| 254 }; | |
| 255 | |
| 256 /** | |
| 257 * @return {?Selection} | |
| 258 */ | |
| 259 Node.prototype.getComponentSelection = function() { | |
| 260 var parent = this.parentNode; | |
| 261 while (parent && parent.nodeType !== Node.DOCUMENT_FRAGMENT_NODE) | |
| 262 parent = parent.parentNode; | |
| 263 return parent instanceof ShadowRoot ? parent.getSelection() : this.window().ge
tSelection(); | |
| 264 }; | |
| 265 | |
| 266 /** | |
| 267 * @return {boolean} | |
| 268 */ | |
| 269 Node.prototype.isComponentSelectionCollapsed = function() { | |
| 270 // FIXME: crbug.com/447523, use selection.isCollapsed when it is fixed for sha
dow dom. | |
| 271 var selection = this.getComponentSelection(); | |
| 272 var range = selection && selection.rangeCount ? selection.getRangeAt(0) : null
; | |
| 273 return range ? range.collapsed : true; | |
| 274 }; | |
| 275 | |
| 276 /** | |
| 277 * @return {boolean} | |
| 278 */ | |
| 279 Node.prototype.hasSelection = function() { | |
| 280 // TODO(luoe): use contains(node, {includeShadow: true}) when it is fixed for
shadow dom. | |
| 281 var contents = this.querySelectorAll('content'); | |
| 282 for (var content of contents) { | |
| 283 if (Array.prototype.some.call(content.getDistributedNodes(), node => node.ha
sSelection())) | |
| 284 return true; | |
| 285 } | |
| 286 if (this.isComponentSelectionCollapsed()) | |
| 287 return false; | |
| 288 return this.getComponentSelection().containsNode(this, true); | |
| 289 }; | |
| 290 | |
| 291 /** | |
| 292 * @return {!Selection} | |
| 293 */ | |
| 294 Node.prototype.getDeepSelection = function() { | |
| 295 var activeElement = this.ownerDocument.activeElement; | |
| 296 var shadowRoot = null; | |
| 297 while (activeElement && activeElement.shadowRoot) { | |
| 298 shadowRoot = activeElement.shadowRoot; | |
| 299 activeElement = shadowRoot.activeElement; | |
| 300 } | |
| 301 | |
| 302 return shadowRoot ? shadowRoot.getSelection() : this.window().getSelection(); | |
| 303 }; | |
| 304 | |
| 305 /** | |
| 306 * @return {!Window} | |
| 307 */ | |
| 308 Node.prototype.window = function() { | |
| 309 return this.ownerDocument.defaultView; | |
| 310 }; | |
| 311 | |
| 312 Element.prototype.removeChildren = function() { | |
| 313 if (this.firstChild) | |
| 314 this.textContent = ''; | |
| 315 }; | |
| 316 | |
| 317 /** | |
| 318 * @param {string} tagName | |
| 319 * @param {string=} customElementType | |
| 320 * @return {!Element} | |
| 321 * @suppressGlobalPropertiesCheck | |
| 322 */ | |
| 323 function createElement(tagName, customElementType) { | |
| 324 return document.createElement(tagName, customElementType || ''); | |
| 325 } | |
| 326 | |
| 327 /** | |
| 328 * @param {number|string} data | |
| 329 * @return {!Text} | |
| 330 * @suppressGlobalPropertiesCheck | |
| 331 */ | |
| 332 function createTextNode(data) { | |
| 333 return document.createTextNode(data); | |
| 334 } | |
| 335 | |
| 336 /** | |
| 337 * @param {string} elementName | |
| 338 * @param {string=} className | |
| 339 * @param {string=} customElementType | |
| 340 * @return {!Element} | |
| 341 */ | |
| 342 Document.prototype.createElementWithClass = function(elementName, className, cus
tomElementType) { | |
| 343 var element = this.createElement(elementName, customElementType || ''); | |
| 344 if (className) | |
| 345 element.className = className; | |
| 346 return element; | |
| 347 }; | |
| 348 | |
| 349 /** | |
| 350 * @param {string} elementName | |
| 351 * @param {string=} className | |
| 352 * @param {string=} customElementType | |
| 353 * @return {!Element} | |
| 354 * @suppressGlobalPropertiesCheck | |
| 355 */ | |
| 356 function createElementWithClass(elementName, className, customElementType) { | |
| 357 return document.createElementWithClass(elementName, className, customElementTy
pe); | |
| 358 } | |
| 359 | |
| 360 /** | |
| 361 * @param {string} childType | |
| 362 * @param {string=} className | |
| 363 * @return {!Element} | |
| 364 */ | |
| 365 Document.prototype.createSVGElement = function(childType, className) { | |
| 366 var element = this.createElementNS('http://www.w3.org/2000/svg', childType); | |
| 367 if (className) | |
| 368 element.setAttribute('class', className); | |
| 369 return element; | |
| 370 }; | |
| 371 | |
| 372 /** | |
| 373 * @param {string} childType | |
| 374 * @param {string=} className | |
| 375 * @return {!Element} | |
| 376 * @suppressGlobalPropertiesCheck | |
| 377 */ | |
| 378 function createSVGElement(childType, className) { | |
| 379 return document.createSVGElement(childType, className); | |
| 380 } | |
| 381 | |
| 382 /** | |
| 383 * @return {!DocumentFragment} | |
| 384 * @suppressGlobalPropertiesCheck | |
| 385 */ | |
| 386 function createDocumentFragment() { | |
| 387 return document.createDocumentFragment(); | |
| 388 } | |
| 389 | |
| 390 /** | |
| 391 * @param {string} elementName | |
| 392 * @param {string=} className | |
| 393 * @param {string=} customElementType | |
| 394 * @return {!Element} | |
| 395 */ | |
| 396 Element.prototype.createChild = function(elementName, className, customElementTy
pe) { | |
| 397 var element = this.ownerDocument.createElementWithClass(elementName, className
, customElementType); | |
| 398 this.appendChild(element); | |
| 399 return element; | |
| 400 }; | |
| 401 | |
| 402 DocumentFragment.prototype.createChild = Element.prototype.createChild; | |
| 403 | |
| 404 /** | |
| 405 * @param {string} text | |
| 406 * @return {!Text} | |
| 407 */ | |
| 408 Element.prototype.createTextChild = function(text) { | |
| 409 var element = this.ownerDocument.createTextNode(text); | |
| 410 this.appendChild(element); | |
| 411 return element; | |
| 412 }; | |
| 413 | |
| 414 DocumentFragment.prototype.createTextChild = Element.prototype.createTextChild; | |
| 415 | |
| 416 /** | |
| 417 * @param {...string} var_args | |
| 418 */ | |
| 419 Element.prototype.createTextChildren = function(var_args) { | |
| 420 for (var i = 0, n = arguments.length; i < n; ++i) | |
| 421 this.createTextChild(arguments[i]); | |
| 422 }; | |
| 423 | |
| 424 DocumentFragment.prototype.createTextChildren = Element.prototype.createTextChil
dren; | |
| 425 | |
| 426 /** | |
| 427 * @return {number} | |
| 428 */ | |
| 429 Element.prototype.totalOffsetLeft = function() { | |
| 430 return this.totalOffset().left; | |
| 431 }; | |
| 432 | |
| 433 /** | |
| 434 * @return {number} | |
| 435 */ | |
| 436 Element.prototype.totalOffsetTop = function() { | |
| 437 return this.totalOffset().top; | |
| 438 }; | |
| 439 | |
| 440 /** | |
| 441 * @return {!{left: number, top: number}} | |
| 442 */ | |
| 443 Element.prototype.totalOffset = function() { | |
| 444 var rect = this.getBoundingClientRect(); | |
| 445 return {left: rect.left, top: rect.top}; | |
| 446 }; | |
| 447 | |
| 448 /** | |
| 449 * @param {string} childType | |
| 450 * @param {string=} className | |
| 451 * @return {!Element} | |
| 452 */ | |
| 453 Element.prototype.createSVGChild = function(childType, className) { | |
| 454 var child = this.ownerDocument.createSVGElement(childType, className); | |
| 455 this.appendChild(child); | |
| 456 return child; | |
| 457 }; | |
| 458 | |
| 459 /** | |
| 460 * @unrestricted | |
| 461 */ | |
| 462 var AnchorBox = class { | |
| 463 /** | |
| 464 * @param {number=} x | |
| 465 * @param {number=} y | |
| 466 * @param {number=} width | |
| 467 * @param {number=} height | |
| 468 */ | |
| 469 constructor(x, y, width, height) { | |
| 470 this.x = x || 0; | |
| 471 this.y = y || 0; | |
| 472 this.width = width || 0; | |
| 473 this.height = height || 0; | |
| 474 } | |
| 475 }; | |
| 476 | |
| 477 /** | |
| 478 * @param {!AnchorBox} box | |
| 479 * @return {!AnchorBox} | |
| 480 */ | |
| 481 AnchorBox.prototype.relativeTo = function(box) { | |
| 482 return new AnchorBox(this.x - box.x, this.y - box.y, this.width, this.height); | |
| 483 }; | |
| 484 | |
| 485 /** | |
| 486 * @param {!Element} element | |
| 487 * @return {!AnchorBox} | |
| 488 */ | |
| 489 AnchorBox.prototype.relativeToElement = function(element) { | |
| 490 return this.relativeTo(element.boxInWindow(element.ownerDocument.defaultView))
; | |
| 491 }; | |
| 492 | |
| 493 /** | |
| 494 * @param {?AnchorBox} anchorBox | |
| 495 * @return {boolean} | |
| 496 */ | |
| 497 AnchorBox.prototype.equals = function(anchorBox) { | |
| 498 return !!anchorBox && this.x === anchorBox.x && this.y === anchorBox.y && this
.width === anchorBox.width && | |
| 499 this.height === anchorBox.height; | |
| 500 }; | |
| 501 | |
| 502 /** | |
| 503 * @param {!Window=} targetWindow | |
| 504 * @return {!AnchorBox} | |
| 505 */ | |
| 506 Element.prototype.boxInWindow = function(targetWindow) { | |
| 507 targetWindow = targetWindow || this.ownerDocument.defaultView; | |
| 508 | |
| 509 var anchorBox = new AnchorBox(); | |
| 510 var curElement = this; | |
| 511 var curWindow = this.ownerDocument.defaultView; | |
| 512 while (curWindow && curElement) { | |
| 513 anchorBox.x += curElement.totalOffsetLeft(); | |
| 514 anchorBox.y += curElement.totalOffsetTop(); | |
| 515 if (curWindow === targetWindow) | |
| 516 break; | |
| 517 curElement = curWindow.frameElement; | |
| 518 curWindow = curWindow.parent; | |
| 519 } | |
| 520 | |
| 521 anchorBox.width = Math.min(this.offsetWidth, targetWindow.innerWidth - anchorB
ox.x); | |
| 522 anchorBox.height = Math.min(this.offsetHeight, targetWindow.innerHeight - anch
orBox.y); | |
| 523 return anchorBox; | |
| 524 }; | |
| 525 | |
| 526 /** | |
| 527 * @param {boolean=} preventDefault | |
| 528 */ | |
| 529 Event.prototype.consume = function(preventDefault) { | |
| 530 this.stopImmediatePropagation(); | |
| 531 if (preventDefault) | |
| 532 this.preventDefault(); | |
| 533 this.handled = true; | |
| 534 }; | |
| 535 | |
| 536 /** | |
| 537 * @param {number=} start | |
| 538 * @param {number=} end | |
| 539 * @return {!Text} | |
| 540 */ | |
| 541 Text.prototype.select = function(start, end) { | |
| 542 start = start || 0; | |
| 543 end = end || this.textContent.length; | |
| 544 | |
| 545 if (start < 0) | |
| 546 start = end + start; | |
| 547 | |
| 548 var selection = this.getComponentSelection(); | |
| 549 selection.removeAllRanges(); | |
| 550 var range = this.ownerDocument.createRange(); | |
| 551 range.setStart(this, start); | |
| 552 range.setEnd(this, end); | |
| 553 selection.addRange(range); | |
| 554 return this; | |
| 555 }; | |
| 556 | |
| 557 /** | |
| 558 * @return {?number} | |
| 559 */ | |
| 560 Element.prototype.selectionLeftOffset = function() { | |
| 561 // Calculate selection offset relative to the current element. | |
| 562 | |
| 563 var selection = this.getComponentSelection(); | |
| 564 if (!selection.containsNode(this, true)) | |
| 565 return null; | |
| 566 | |
| 567 var leftOffset = selection.anchorOffset; | |
| 568 var node = selection.anchorNode; | |
| 569 | |
| 570 while (node !== this) { | |
| 571 while (node.previousSibling) { | |
| 572 node = node.previousSibling; | |
| 573 leftOffset += node.textContent.length; | |
| 574 } | |
| 575 node = node.parentNodeOrShadowHost(); | |
| 576 } | |
| 577 | |
| 578 return leftOffset; | |
| 579 }; | |
| 580 | |
| 581 /** | |
| 582 * @param {...!Node} var_args | |
| 583 */ | |
| 584 Node.prototype.appendChildren = function(var_args) { | |
| 585 for (var i = 0, n = arguments.length; i < n; ++i) | |
| 586 this.appendChild(arguments[i]); | |
| 587 }; | |
| 588 | |
| 589 /** | |
| 590 * @return {string} | |
| 591 */ | |
| 592 Node.prototype.deepTextContent = function() { | |
| 593 return this.childTextNodes() | |
| 594 .map(function(node) { | |
| 595 return node.textContent; | |
| 596 }) | |
| 597 .join(''); | |
| 598 }; | |
| 599 | |
| 600 /** | |
| 601 * @return {!Array.<!Node>} | |
| 602 */ | |
| 603 Node.prototype.childTextNodes = function() { | |
| 604 var node = this.traverseNextTextNode(this); | |
| 605 var result = []; | |
| 606 var nonTextTags = {'STYLE': 1, 'SCRIPT': 1}; | |
| 607 while (node) { | |
| 608 if (!nonTextTags[node.parentElement.nodeName]) | |
| 609 result.push(node); | |
| 610 node = node.traverseNextTextNode(this); | |
| 611 } | |
| 612 return result; | |
| 613 }; | |
| 614 | |
| 615 /** | |
| 616 * @param {?Node} node | |
| 617 * @return {boolean} | |
| 618 */ | |
| 619 Node.prototype.isAncestor = function(node) { | |
| 620 if (!node) | |
| 621 return false; | |
| 622 | |
| 623 var currentNode = node.parentNodeOrShadowHost(); | |
| 624 while (currentNode) { | |
| 625 if (this === currentNode) | |
| 626 return true; | |
| 627 currentNode = currentNode.parentNodeOrShadowHost(); | |
| 628 } | |
| 629 return false; | |
| 630 }; | |
| 631 | |
| 632 /** | |
| 633 * @param {?Node} descendant | |
| 634 * @return {boolean} | |
| 635 */ | |
| 636 Node.prototype.isDescendant = function(descendant) { | |
| 637 return !!descendant && descendant.isAncestor(this); | |
| 638 }; | |
| 639 | |
| 640 /** | |
| 641 * @param {?Node} node | |
| 642 * @return {boolean} | |
| 643 */ | |
| 644 Node.prototype.isSelfOrAncestor = function(node) { | |
| 645 return !!node && (node === this || this.isAncestor(node)); | |
| 646 }; | |
| 647 | |
| 648 /** | |
| 649 * @param {?Node} node | |
| 650 * @return {boolean} | |
| 651 */ | |
| 652 Node.prototype.isSelfOrDescendant = function(node) { | |
| 653 return !!node && (node === this || this.isDescendant(node)); | |
| 654 }; | |
| 655 | |
| 656 /** | |
| 657 * @param {!Node=} stayWithin | |
| 658 * @return {?Node} | |
| 659 */ | |
| 660 Node.prototype.traverseNextNode = function(stayWithin) { | |
| 661 if (this.shadowRoot) | |
| 662 return this.shadowRoot; | |
| 663 | |
| 664 var distributedNodes = this.getDistributedNodes ? this.getDistributedNodes() :
[]; | |
| 665 | |
| 666 if (distributedNodes.length) | |
| 667 return distributedNodes[0]; | |
| 668 | |
| 669 if (this.firstChild) | |
| 670 return this.firstChild; | |
| 671 | |
| 672 var node = this; | |
| 673 while (node) { | |
| 674 if (stayWithin && node === stayWithin) | |
| 675 return null; | |
| 676 | |
| 677 var sibling = nextSibling(node); | |
| 678 if (sibling) | |
| 679 return sibling; | |
| 680 | |
| 681 node = insertionPoint(node) || node.parentNodeOrShadowHost(); | |
| 682 } | |
| 683 | |
| 684 /** | |
| 685 * @param {!Node} node | |
| 686 * @return {?Node} | |
| 687 */ | |
| 688 function nextSibling(node) { | |
| 689 var parent = insertionPoint(node); | |
| 690 if (!parent) | |
| 691 return node.nextSibling; | |
| 692 var distributedNodes = parent.getDistributedNodes ? parent.getDistributedNod
es() : []; | |
| 693 | |
| 694 var position = Array.prototype.indexOf.call(distributedNodes, node); | |
| 695 if (position + 1 < distributedNodes.length) | |
| 696 return distributedNodes[position + 1]; | |
| 697 return null; | |
| 698 } | |
| 699 | |
| 700 /** | |
| 701 * @param {!Node} node | |
| 702 * @return {?Node} | |
| 703 */ | |
| 704 function insertionPoint(node) { | |
| 705 var insertionPoints = node.getDestinationInsertionPoints ? node.getDestinati
onInsertionPoints() : []; | |
| 706 return insertionPoints.length > 0 ? insertionPoints[insertionPoints.length -
1] : null; | |
| 707 } | |
| 708 | |
| 709 return null; | |
| 710 }; | |
| 711 | |
| 712 /** | |
| 713 * @param {!Node=} stayWithin | |
| 714 * @return {?Node} | |
| 715 */ | |
| 716 Node.prototype.traversePreviousNode = function(stayWithin) { | |
| 717 if (stayWithin && this === stayWithin) | |
| 718 return null; | |
| 719 var node = this.previousSibling; | |
| 720 while (node && node.lastChild) | |
| 721 node = node.lastChild; | |
| 722 if (node) | |
| 723 return node; | |
| 724 return this.parentNodeOrShadowHost(); | |
| 725 }; | |
| 726 | |
| 727 /** | |
| 728 * @param {*} text | |
| 729 * @param {string=} placeholder | |
| 730 * @return {boolean} true if was truncated | |
| 731 */ | |
| 732 Node.prototype.setTextContentTruncatedIfNeeded = function(text, placeholder) { | |
| 733 // Huge texts in the UI reduce rendering performance drastically. | |
| 734 // Moreover, Blink/WebKit uses <unsigned short> internally for storing text co
ntent | |
| 735 // length, so texts longer than 65535 are inherently displayed incorrectly. | |
| 736 const maxTextContentLength = 10000; | |
| 737 | |
| 738 if (typeof text === 'string' && text.length > maxTextContentLength) { | |
| 739 this.textContent = typeof placeholder === 'string' ? placeholder : text.trim
Middle(maxTextContentLength); | |
| 740 return true; | |
| 741 } | |
| 742 | |
| 743 this.textContent = text; | |
| 744 return false; | |
| 745 }; | |
| 746 | |
| 747 /** | |
| 748 * @return {?Node} | |
| 749 */ | |
| 750 Event.prototype.deepElementFromPoint = function() { | |
| 751 var root = this.target && this.target.getComponentRoot(); | |
| 752 return root ? root.deepElementFromPoint(this.pageX, this.pageY) : null; | |
| 753 }; | |
| 754 | |
| 755 /** | |
| 756 * @param {number} x | |
| 757 * @param {number} y | |
| 758 * @return {?Node} | |
| 759 */ | |
| 760 Document.prototype.deepElementFromPoint = function(x, y) { | |
| 761 var node = this.elementFromPoint(x, y); | |
| 762 while (node && node.shadowRoot) | |
| 763 node = node.shadowRoot.elementFromPoint(x, y); | |
| 764 return node; | |
| 765 }; | |
| 766 | |
| 767 DocumentFragment.prototype.deepElementFromPoint = Document.prototype.deepElement
FromPoint; | |
| 768 | |
| 769 /** | |
| 770 * @return {?Element} | |
| 771 */ | |
| 772 Document.prototype.deepActiveElement = function() { | |
| 773 var activeElement = this.activeElement; | |
| 774 while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.a
ctiveElement) | |
| 775 activeElement = activeElement.shadowRoot.activeElement; | |
| 776 return activeElement; | |
| 777 }; | |
| 778 | |
| 779 DocumentFragment.prototype.deepActiveElement = Document.prototype.deepActiveElem
ent; | |
| 780 | |
| 781 /** | |
| 782 * @return {boolean} | |
| 783 */ | |
| 784 Element.prototype.hasFocus = function() { | |
| 785 var root = this.getComponentRoot(); | |
| 786 return !!root && this.isSelfOrAncestor(root.activeElement); | |
| 787 }; | |
| 788 | |
| 789 /** | |
| 790 * @return {?Document|?DocumentFragment} | |
| 791 */ | |
| 792 Node.prototype.getComponentRoot = function() { | |
| 793 var node = this; | |
| 794 while (node && node.nodeType !== Node.DOCUMENT_FRAGMENT_NODE && node.nodeType
!== Node.DOCUMENT_NODE) | |
| 795 node = node.parentNode; | |
| 796 return /** @type {?Document|?DocumentFragment} */ (node); | |
| 797 }; | |
| 798 | |
| 799 /** | |
| 800 * @param {!Event} event | |
| 801 * @return {boolean} | |
| 802 */ | |
| 803 function isEnterKey(event) { | |
| 804 // Check if in IME. | |
| 805 return event.keyCode !== 229 && event.key === 'Enter'; | |
| 806 } | |
| 807 | |
| 808 /** | |
| 809 * @param {!Event} event | |
| 810 * @return {boolean} | |
| 811 */ | |
| 812 function isEscKey(event) { | |
| 813 return event.keyCode === 27; | |
| 814 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2620823002:
DevTools: extract the dom_extension module. (Closed)
