530 lines
		
	
	
		
			25 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
		
		
			
		
	
	
			530 lines
		
	
	
		
			25 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
|  | "use strict"; | ||
|  | var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { | ||
|  |     function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } | ||
|  |     return new (P || (P = Promise))(function (resolve, reject) { | ||
|  |         function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } | ||
|  |         function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } | ||
|  |         function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } | ||
|  |         step((generator = generator.apply(thisArg, _arguments || [])).next()); | ||
|  |     }); | ||
|  | }; | ||
|  | var __generator = (this && this.__generator) || function (thisArg, body) { | ||
|  |     var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; | ||
|  |     return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; | ||
|  |     function verb(n) { return function (v) { return step([n, v]); }; } | ||
|  |     function step(op) { | ||
|  |         if (f) throw new TypeError("Generator is already executing."); | ||
|  |         while (_) try { | ||
|  |             if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; | ||
|  |             if (y = 0, t) op = [op[0] & 2, t.value]; | ||
|  |             switch (op[0]) { | ||
|  |                 case 0: case 1: t = op; break; | ||
|  |                 case 4: _.label++; return { value: op[1], done: false }; | ||
|  |                 case 5: _.label++; y = op[1]; op = [0]; continue; | ||
|  |                 case 7: op = _.ops.pop(); _.trys.pop(); continue; | ||
|  |                 default: | ||
|  |                     if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } | ||
|  |                     if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } | ||
|  |                     if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } | ||
|  |                     if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } | ||
|  |                     if (t[2]) _.ops.pop(); | ||
|  |                     _.trys.pop(); continue; | ||
|  |             } | ||
|  |             op = body.call(thisArg, _); | ||
|  |         } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } | ||
|  |         if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; | ||
|  |     } | ||
|  | }; | ||
|  | Object.defineProperty(exports, "__esModule", { value: true }); | ||
|  | exports.copyCSSStyles = exports.DocumentCloner = void 0; | ||
|  | var node_parser_1 = require("./node-parser"); | ||
|  | var parser_1 = require("../css/syntax/parser"); | ||
|  | var counter_1 = require("../css/types/functions/counter"); | ||
|  | var list_style_type_1 = require("../css/property-descriptors/list-style-type"); | ||
|  | var index_1 = require("../css/index"); | ||
|  | var quotes_1 = require("../css/property-descriptors/quotes"); | ||
|  | var debugger_1 = require("../core/debugger"); | ||
|  | var IGNORE_ATTRIBUTE = 'data-html2canvas-ignore'; | ||
|  | var DocumentCloner = /** @class */ (function () { | ||
|  |     function DocumentCloner(context, element, options) { | ||
|  |         this.context = context; | ||
|  |         this.options = options; | ||
|  |         this.scrolledElements = []; | ||
|  |         this.referenceElement = element; | ||
|  |         this.counters = new counter_1.CounterState(); | ||
|  |         this.quoteDepth = 0; | ||
|  |         if (!element.ownerDocument) { | ||
|  |             throw new Error('Cloned element does not have an owner document'); | ||
|  |         } | ||
|  |         this.documentElement = this.cloneNode(element.ownerDocument.documentElement, false); | ||
|  |     } | ||
|  |     DocumentCloner.prototype.toIFrame = function (ownerDocument, windowSize) { | ||
|  |         var _this = this; | ||
|  |         var iframe = createIFrameContainer(ownerDocument, windowSize); | ||
|  |         if (!iframe.contentWindow) { | ||
|  |             return Promise.reject("Unable to find iframe window"); | ||
|  |         } | ||
|  |         var scrollX = ownerDocument.defaultView.pageXOffset; | ||
|  |         var scrollY = ownerDocument.defaultView.pageYOffset; | ||
|  |         var cloneWindow = iframe.contentWindow; | ||
|  |         var documentClone = cloneWindow.document; | ||
|  |         /* Chrome doesn't detect relative background-images assigned in inline <style> sheets when fetched through getComputedStyle | ||
|  |          if window url is about:blank, we can assign the url to current by writing onto the document | ||
|  |          */ | ||
|  |         var iframeLoad = iframeLoader(iframe).then(function () { return __awaiter(_this, void 0, void 0, function () { | ||
|  |             var onclone, referenceElement; | ||
|  |             return __generator(this, function (_a) { | ||
|  |                 switch (_a.label) { | ||
|  |                     case 0: | ||
|  |                         this.scrolledElements.forEach(restoreNodeScroll); | ||
|  |                         if (cloneWindow) { | ||
|  |                             cloneWindow.scrollTo(windowSize.left, windowSize.top); | ||
|  |                             if (/(iPad|iPhone|iPod)/g.test(navigator.userAgent) && | ||
|  |                                 (cloneWindow.scrollY !== windowSize.top || cloneWindow.scrollX !== windowSize.left)) { | ||
|  |                                 this.context.logger.warn('Unable to restore scroll position for cloned document'); | ||
|  |                                 this.context.windowBounds = this.context.windowBounds.add(cloneWindow.scrollX - windowSize.left, cloneWindow.scrollY - windowSize.top, 0, 0); | ||
|  |                             } | ||
|  |                         } | ||
|  |                         onclone = this.options.onclone; | ||
|  |                         referenceElement = this.clonedReferenceElement; | ||
|  |                         if (typeof referenceElement === 'undefined') { | ||
|  |                             return [2 /*return*/, Promise.reject("Error finding the " + this.referenceElement.nodeName + " in the cloned document")]; | ||
|  |                         } | ||
|  |                         if (!(documentClone.fonts && documentClone.fonts.ready)) return [3 /*break*/, 2]; | ||
|  |                         return [4 /*yield*/, documentClone.fonts.ready]; | ||
|  |                     case 1: | ||
|  |                         _a.sent(); | ||
|  |                         _a.label = 2; | ||
|  |                     case 2: | ||
|  |                         if (!/(AppleWebKit)/g.test(navigator.userAgent)) return [3 /*break*/, 4]; | ||
|  |                         return [4 /*yield*/, imagesReady(documentClone)]; | ||
|  |                     case 3: | ||
|  |                         _a.sent(); | ||
|  |                         _a.label = 4; | ||
|  |                     case 4: | ||
|  |                         if (typeof onclone === 'function') { | ||
|  |                             return [2 /*return*/, Promise.resolve() | ||
|  |                                     .then(function () { return onclone(documentClone, referenceElement); }) | ||
|  |                                     .then(function () { return iframe; })]; | ||
|  |                         } | ||
|  |                         return [2 /*return*/, iframe]; | ||
|  |                 } | ||
|  |             }); | ||
|  |         }); }); | ||
|  |         documentClone.open(); | ||
|  |         documentClone.write(serializeDoctype(document.doctype) + "<html></html>"); | ||
|  |         // Chrome scrolls the parent document for some reason after the write to the cloned window???
 | ||
|  |         restoreOwnerScroll(this.referenceElement.ownerDocument, scrollX, scrollY); | ||
|  |         documentClone.replaceChild(documentClone.adoptNode(this.documentElement), documentClone.documentElement); | ||
|  |         documentClone.close(); | ||
|  |         return iframeLoad; | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.createElementClone = function (node) { | ||
|  |         if (debugger_1.isDebugging(node, 2 /* CLONE */)) { | ||
|  |             debugger; | ||
|  |         } | ||
|  |         if (node_parser_1.isCanvasElement(node)) { | ||
|  |             return this.createCanvasClone(node); | ||
|  |         } | ||
|  |         if (node_parser_1.isVideoElement(node)) { | ||
|  |             return this.createVideoClone(node); | ||
|  |         } | ||
|  |         if (node_parser_1.isStyleElement(node)) { | ||
|  |             return this.createStyleClone(node); | ||
|  |         } | ||
|  |         var clone = node.cloneNode(false); | ||
|  |         if (node_parser_1.isImageElement(clone)) { | ||
|  |             if (node_parser_1.isImageElement(node) && node.currentSrc && node.currentSrc !== node.src) { | ||
|  |                 clone.src = node.currentSrc; | ||
|  |                 clone.srcset = ''; | ||
|  |             } | ||
|  |             if (clone.loading === 'lazy') { | ||
|  |                 clone.loading = 'eager'; | ||
|  |             } | ||
|  |         } | ||
|  |         if (node_parser_1.isCustomElement(clone)) { | ||
|  |             return this.createCustomElementClone(clone); | ||
|  |         } | ||
|  |         return clone; | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.createCustomElementClone = function (node) { | ||
|  |         var clone = document.createElement('html2canvascustomelement'); | ||
|  |         exports.copyCSSStyles(node.style, clone); | ||
|  |         return clone; | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.createStyleClone = function (node) { | ||
|  |         try { | ||
|  |             var sheet = node.sheet; | ||
|  |             if (sheet && sheet.cssRules) { | ||
|  |                 var css = [].slice.call(sheet.cssRules, 0).reduce(function (css, rule) { | ||
|  |                     if (rule && typeof rule.cssText === 'string') { | ||
|  |                         return css + rule.cssText; | ||
|  |                     } | ||
|  |                     return css; | ||
|  |                 }, ''); | ||
|  |                 var style = node.cloneNode(false); | ||
|  |                 style.textContent = css; | ||
|  |                 return style; | ||
|  |             } | ||
|  |         } | ||
|  |         catch (e) { | ||
|  |             // accessing node.sheet.cssRules throws a DOMException
 | ||
|  |             this.context.logger.error('Unable to access cssRules property', e); | ||
|  |             if (e.name !== 'SecurityError') { | ||
|  |                 throw e; | ||
|  |             } | ||
|  |         } | ||
|  |         return node.cloneNode(false); | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.createCanvasClone = function (canvas) { | ||
|  |         var _a; | ||
|  |         if (this.options.inlineImages && canvas.ownerDocument) { | ||
|  |             var img = canvas.ownerDocument.createElement('img'); | ||
|  |             try { | ||
|  |                 img.src = canvas.toDataURL(); | ||
|  |                 return img; | ||
|  |             } | ||
|  |             catch (e) { | ||
|  |                 this.context.logger.info("Unable to inline canvas contents, canvas is tainted", canvas); | ||
|  |             } | ||
|  |         } | ||
|  |         var clonedCanvas = canvas.cloneNode(false); | ||
|  |         try { | ||
|  |             clonedCanvas.width = canvas.width; | ||
|  |             clonedCanvas.height = canvas.height; | ||
|  |             var ctx = canvas.getContext('2d'); | ||
|  |             var clonedCtx = clonedCanvas.getContext('2d'); | ||
|  |             if (clonedCtx) { | ||
|  |                 if (!this.options.allowTaint && ctx) { | ||
|  |                     clonedCtx.putImageData(ctx.getImageData(0, 0, canvas.width, canvas.height), 0, 0); | ||
|  |                 } | ||
|  |                 else { | ||
|  |                     var gl = (_a = canvas.getContext('webgl2')) !== null && _a !== void 0 ? _a : canvas.getContext('webgl'); | ||
|  |                     if (gl) { | ||
|  |                         var attribs = gl.getContextAttributes(); | ||
|  |                         if ((attribs === null || attribs === void 0 ? void 0 : attribs.preserveDrawingBuffer) === false) { | ||
|  |                             this.context.logger.warn('Unable to clone WebGL context as it has preserveDrawingBuffer=false', canvas); | ||
|  |                         } | ||
|  |                     } | ||
|  |                     clonedCtx.drawImage(canvas, 0, 0); | ||
|  |                 } | ||
|  |             } | ||
|  |             return clonedCanvas; | ||
|  |         } | ||
|  |         catch (e) { | ||
|  |             this.context.logger.info("Unable to clone canvas as it is tainted", canvas); | ||
|  |         } | ||
|  |         return clonedCanvas; | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.createVideoClone = function (video) { | ||
|  |         var canvas = video.ownerDocument.createElement('canvas'); | ||
|  |         canvas.width = video.offsetWidth; | ||
|  |         canvas.height = video.offsetHeight; | ||
|  |         var ctx = canvas.getContext('2d'); | ||
|  |         try { | ||
|  |             if (ctx) { | ||
|  |                 ctx.drawImage(video, 0, 0, canvas.width, canvas.height); | ||
|  |                 if (!this.options.allowTaint) { | ||
|  |                     ctx.getImageData(0, 0, canvas.width, canvas.height); | ||
|  |                 } | ||
|  |             } | ||
|  |             return canvas; | ||
|  |         } | ||
|  |         catch (e) { | ||
|  |             this.context.logger.info("Unable to clone video as it is tainted", video); | ||
|  |         } | ||
|  |         var blankCanvas = video.ownerDocument.createElement('canvas'); | ||
|  |         blankCanvas.width = video.offsetWidth; | ||
|  |         blankCanvas.height = video.offsetHeight; | ||
|  |         return blankCanvas; | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.appendChildNode = function (clone, child, copyStyles) { | ||
|  |         if (!node_parser_1.isElementNode(child) || | ||
|  |             (!node_parser_1.isScriptElement(child) && | ||
|  |                 !child.hasAttribute(IGNORE_ATTRIBUTE) && | ||
|  |                 (typeof this.options.ignoreElements !== 'function' || !this.options.ignoreElements(child)))) { | ||
|  |             if (!this.options.copyStyles || !node_parser_1.isElementNode(child) || !node_parser_1.isStyleElement(child)) { | ||
|  |                 clone.appendChild(this.cloneNode(child, copyStyles)); | ||
|  |             } | ||
|  |         } | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.cloneChildNodes = function (node, clone, copyStyles) { | ||
|  |         var _this = this; | ||
|  |         for (var child = node.shadowRoot ? node.shadowRoot.firstChild : node.firstChild; child; child = child.nextSibling) { | ||
|  |             if (node_parser_1.isElementNode(child) && node_parser_1.isSlotElement(child) && typeof child.assignedNodes === 'function') { | ||
|  |                 var assignedNodes = child.assignedNodes(); | ||
|  |                 if (assignedNodes.length) { | ||
|  |                     assignedNodes.forEach(function (assignedNode) { return _this.appendChildNode(clone, assignedNode, copyStyles); }); | ||
|  |                 } | ||
|  |             } | ||
|  |             else { | ||
|  |                 this.appendChildNode(clone, child, copyStyles); | ||
|  |             } | ||
|  |         } | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.cloneNode = function (node, copyStyles) { | ||
|  |         if (node_parser_1.isTextNode(node)) { | ||
|  |             return document.createTextNode(node.data); | ||
|  |         } | ||
|  |         if (!node.ownerDocument) { | ||
|  |             return node.cloneNode(false); | ||
|  |         } | ||
|  |         var window = node.ownerDocument.defaultView; | ||
|  |         if (window && node_parser_1.isElementNode(node) && (node_parser_1.isHTMLElementNode(node) || node_parser_1.isSVGElementNode(node))) { | ||
|  |             var clone = this.createElementClone(node); | ||
|  |             clone.style.transitionProperty = 'none'; | ||
|  |             var style = window.getComputedStyle(node); | ||
|  |             var styleBefore = window.getComputedStyle(node, ':before'); | ||
|  |             var styleAfter = window.getComputedStyle(node, ':after'); | ||
|  |             if (this.referenceElement === node && node_parser_1.isHTMLElementNode(clone)) { | ||
|  |                 this.clonedReferenceElement = clone; | ||
|  |             } | ||
|  |             if (node_parser_1.isBodyElement(clone)) { | ||
|  |                 createPseudoHideStyles(clone); | ||
|  |             } | ||
|  |             var counters = this.counters.parse(new index_1.CSSParsedCounterDeclaration(this.context, style)); | ||
|  |             var before = this.resolvePseudoContent(node, clone, styleBefore, PseudoElementType.BEFORE); | ||
|  |             if (node_parser_1.isCustomElement(node)) { | ||
|  |                 copyStyles = true; | ||
|  |             } | ||
|  |             if (!node_parser_1.isVideoElement(node)) { | ||
|  |                 this.cloneChildNodes(node, clone, copyStyles); | ||
|  |             } | ||
|  |             if (before) { | ||
|  |                 clone.insertBefore(before, clone.firstChild); | ||
|  |             } | ||
|  |             var after = this.resolvePseudoContent(node, clone, styleAfter, PseudoElementType.AFTER); | ||
|  |             if (after) { | ||
|  |                 clone.appendChild(after); | ||
|  |             } | ||
|  |             this.counters.pop(counters); | ||
|  |             if ((style && (this.options.copyStyles || node_parser_1.isSVGElementNode(node)) && !node_parser_1.isIFrameElement(node)) || | ||
|  |                 copyStyles) { | ||
|  |                 exports.copyCSSStyles(style, clone); | ||
|  |             } | ||
|  |             if (node.scrollTop !== 0 || node.scrollLeft !== 0) { | ||
|  |                 this.scrolledElements.push([clone, node.scrollLeft, node.scrollTop]); | ||
|  |             } | ||
|  |             if ((node_parser_1.isTextareaElement(node) || node_parser_1.isSelectElement(node)) && | ||
|  |                 (node_parser_1.isTextareaElement(clone) || node_parser_1.isSelectElement(clone))) { | ||
|  |                 clone.value = node.value; | ||
|  |             } | ||
|  |             return clone; | ||
|  |         } | ||
|  |         return node.cloneNode(false); | ||
|  |     }; | ||
|  |     DocumentCloner.prototype.resolvePseudoContent = function (node, clone, style, pseudoElt) { | ||
|  |         var _this = this; | ||
|  |         if (!style) { | ||
|  |             return; | ||
|  |         } | ||
|  |         var value = style.content; | ||
|  |         var document = clone.ownerDocument; | ||
|  |         if (!document || !value || value === 'none' || value === '-moz-alt-content' || style.display === 'none') { | ||
|  |             return; | ||
|  |         } | ||
|  |         this.counters.parse(new index_1.CSSParsedCounterDeclaration(this.context, style)); | ||
|  |         var declaration = new index_1.CSSParsedPseudoDeclaration(this.context, style); | ||
|  |         var anonymousReplacedElement = document.createElement('html2canvaspseudoelement'); | ||
|  |         exports.copyCSSStyles(style, anonymousReplacedElement); | ||
|  |         declaration.content.forEach(function (token) { | ||
|  |             if (token.type === 0 /* STRING_TOKEN */) { | ||
|  |                 anonymousReplacedElement.appendChild(document.createTextNode(token.value)); | ||
|  |             } | ||
|  |             else if (token.type === 22 /* URL_TOKEN */) { | ||
|  |                 var img = document.createElement('img'); | ||
|  |                 img.src = token.value; | ||
|  |                 img.style.opacity = '1'; | ||
|  |                 anonymousReplacedElement.appendChild(img); | ||
|  |             } | ||
|  |             else if (token.type === 18 /* FUNCTION */) { | ||
|  |                 if (token.name === 'attr') { | ||
|  |                     var attr = token.values.filter(parser_1.isIdentToken); | ||
|  |                     if (attr.length) { | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(node.getAttribute(attr[0].value) || '')); | ||
|  |                     } | ||
|  |                 } | ||
|  |                 else if (token.name === 'counter') { | ||
|  |                     var _a = token.values.filter(parser_1.nonFunctionArgSeparator), counter = _a[0], counterStyle = _a[1]; | ||
|  |                     if (counter && parser_1.isIdentToken(counter)) { | ||
|  |                         var counterState = _this.counters.getCounterValue(counter.value); | ||
|  |                         var counterType = counterStyle && parser_1.isIdentToken(counterStyle) | ||
|  |                             ? list_style_type_1.listStyleType.parse(_this.context, counterStyle.value) | ||
|  |                             : 3 /* DECIMAL */; | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(counter_1.createCounterText(counterState, counterType, false))); | ||
|  |                     } | ||
|  |                 } | ||
|  |                 else if (token.name === 'counters') { | ||
|  |                     var _b = token.values.filter(parser_1.nonFunctionArgSeparator), counter = _b[0], delim = _b[1], counterStyle = _b[2]; | ||
|  |                     if (counter && parser_1.isIdentToken(counter)) { | ||
|  |                         var counterStates = _this.counters.getCounterValues(counter.value); | ||
|  |                         var counterType_1 = counterStyle && parser_1.isIdentToken(counterStyle) | ||
|  |                             ? list_style_type_1.listStyleType.parse(_this.context, counterStyle.value) | ||
|  |                             : 3 /* DECIMAL */; | ||
|  |                         var separator = delim && delim.type === 0 /* STRING_TOKEN */ ? delim.value : ''; | ||
|  |                         var text = counterStates | ||
|  |                             .map(function (value) { return counter_1.createCounterText(value, counterType_1, false); }) | ||
|  |                             .join(separator); | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(text)); | ||
|  |                     } | ||
|  |                 } | ||
|  |                 else { | ||
|  |                     //   console.log('FUNCTION_TOKEN', token);
 | ||
|  |                 } | ||
|  |             } | ||
|  |             else if (token.type === 20 /* IDENT_TOKEN */) { | ||
|  |                 switch (token.value) { | ||
|  |                     case 'open-quote': | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(quotes_1.getQuote(declaration.quotes, _this.quoteDepth++, true))); | ||
|  |                         break; | ||
|  |                     case 'close-quote': | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(quotes_1.getQuote(declaration.quotes, --_this.quoteDepth, false))); | ||
|  |                         break; | ||
|  |                     default: | ||
|  |                         // safari doesn't parse string tokens correctly because of lack of quotes
 | ||
|  |                         anonymousReplacedElement.appendChild(document.createTextNode(token.value)); | ||
|  |                 } | ||
|  |             } | ||
|  |         }); | ||
|  |         anonymousReplacedElement.className = PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + " " + PSEUDO_HIDE_ELEMENT_CLASS_AFTER; | ||
|  |         var newClassName = pseudoElt === PseudoElementType.BEFORE | ||
|  |             ? " " + PSEUDO_HIDE_ELEMENT_CLASS_BEFORE | ||
|  |             : " " + PSEUDO_HIDE_ELEMENT_CLASS_AFTER; | ||
|  |         if (node_parser_1.isSVGElementNode(clone)) { | ||
|  |             clone.className.baseValue += newClassName; | ||
|  |         } | ||
|  |         else { | ||
|  |             clone.className += newClassName; | ||
|  |         } | ||
|  |         return anonymousReplacedElement; | ||
|  |     }; | ||
|  |     DocumentCloner.destroy = function (container) { | ||
|  |         if (container.parentNode) { | ||
|  |             container.parentNode.removeChild(container); | ||
|  |             return true; | ||
|  |         } | ||
|  |         return false; | ||
|  |     }; | ||
|  |     return DocumentCloner; | ||
|  | }()); | ||
|  | exports.DocumentCloner = DocumentCloner; | ||
|  | var PseudoElementType; | ||
|  | (function (PseudoElementType) { | ||
|  |     PseudoElementType[PseudoElementType["BEFORE"] = 0] = "BEFORE"; | ||
|  |     PseudoElementType[PseudoElementType["AFTER"] = 1] = "AFTER"; | ||
|  | })(PseudoElementType || (PseudoElementType = {})); | ||
|  | var createIFrameContainer = function (ownerDocument, bounds) { | ||
|  |     var cloneIframeContainer = ownerDocument.createElement('iframe'); | ||
|  |     cloneIframeContainer.className = 'html2canvas-container'; | ||
|  |     cloneIframeContainer.style.visibility = 'hidden'; | ||
|  |     cloneIframeContainer.style.position = 'fixed'; | ||
|  |     cloneIframeContainer.style.left = '-10000px'; | ||
|  |     cloneIframeContainer.style.top = '0px'; | ||
|  |     cloneIframeContainer.style.border = '0'; | ||
|  |     cloneIframeContainer.width = bounds.width.toString(); | ||
|  |     cloneIframeContainer.height = bounds.height.toString(); | ||
|  |     cloneIframeContainer.scrolling = 'no'; // ios won't scroll without it
 | ||
|  |     cloneIframeContainer.setAttribute(IGNORE_ATTRIBUTE, 'true'); | ||
|  |     ownerDocument.body.appendChild(cloneIframeContainer); | ||
|  |     return cloneIframeContainer; | ||
|  | }; | ||
|  | var imageReady = function (img) { | ||
|  |     return new Promise(function (resolve) { | ||
|  |         if (img.complete) { | ||
|  |             resolve(); | ||
|  |             return; | ||
|  |         } | ||
|  |         if (!img.src) { | ||
|  |             resolve(); | ||
|  |             return; | ||
|  |         } | ||
|  |         img.onload = resolve; | ||
|  |         img.onerror = resolve; | ||
|  |     }); | ||
|  | }; | ||
|  | var imagesReady = function (document) { | ||
|  |     return Promise.all([].slice.call(document.images, 0).map(imageReady)); | ||
|  | }; | ||
|  | var iframeLoader = function (iframe) { | ||
|  |     return new Promise(function (resolve, reject) { | ||
|  |         var cloneWindow = iframe.contentWindow; | ||
|  |         if (!cloneWindow) { | ||
|  |             return reject("No window assigned for iframe"); | ||
|  |         } | ||
|  |         var documentClone = cloneWindow.document; | ||
|  |         cloneWindow.onload = iframe.onload = function () { | ||
|  |             cloneWindow.onload = iframe.onload = null; | ||
|  |             var interval = setInterval(function () { | ||
|  |                 if (documentClone.body.childNodes.length > 0 && documentClone.readyState === 'complete') { | ||
|  |                     clearInterval(interval); | ||
|  |                     resolve(iframe); | ||
|  |                 } | ||
|  |             }, 50); | ||
|  |         }; | ||
|  |     }); | ||
|  | }; | ||
|  | var ignoredStyleProperties = [ | ||
|  |     'all', | ||
|  |     'd', | ||
|  |     'content' // Safari shows pseudoelements if content is set
 | ||
|  | ]; | ||
|  | var copyCSSStyles = function (style, target) { | ||
|  |     // Edge does not provide value for cssText
 | ||
|  |     for (var i = style.length - 1; i >= 0; i--) { | ||
|  |         var property = style.item(i); | ||
|  |         if (ignoredStyleProperties.indexOf(property) === -1) { | ||
|  |             target.style.setProperty(property, style.getPropertyValue(property)); | ||
|  |         } | ||
|  |     } | ||
|  |     return target; | ||
|  | }; | ||
|  | exports.copyCSSStyles = copyCSSStyles; | ||
|  | var serializeDoctype = function (doctype) { | ||
|  |     var str = ''; | ||
|  |     if (doctype) { | ||
|  |         str += '<!DOCTYPE '; | ||
|  |         if (doctype.name) { | ||
|  |             str += doctype.name; | ||
|  |         } | ||
|  |         if (doctype.internalSubset) { | ||
|  |             str += doctype.internalSubset; | ||
|  |         } | ||
|  |         if (doctype.publicId) { | ||
|  |             str += "\"" + doctype.publicId + "\""; | ||
|  |         } | ||
|  |         if (doctype.systemId) { | ||
|  |             str += "\"" + doctype.systemId + "\""; | ||
|  |         } | ||
|  |         str += '>'; | ||
|  |     } | ||
|  |     return str; | ||
|  | }; | ||
|  | var restoreOwnerScroll = function (ownerDocument, x, y) { | ||
|  |     if (ownerDocument && | ||
|  |         ownerDocument.defaultView && | ||
|  |         (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) { | ||
|  |         ownerDocument.defaultView.scrollTo(x, y); | ||
|  |     } | ||
|  | }; | ||
|  | var restoreNodeScroll = function (_a) { | ||
|  |     var element = _a[0], x = _a[1], y = _a[2]; | ||
|  |     element.scrollLeft = x; | ||
|  |     element.scrollTop = y; | ||
|  | }; | ||
|  | var PSEUDO_BEFORE = ':before'; | ||
|  | var PSEUDO_AFTER = ':after'; | ||
|  | var PSEUDO_HIDE_ELEMENT_CLASS_BEFORE = '___html2canvas___pseudoelement_before'; | ||
|  | var PSEUDO_HIDE_ELEMENT_CLASS_AFTER = '___html2canvas___pseudoelement_after'; | ||
|  | var PSEUDO_HIDE_ELEMENT_STYLE = "{\n    content: \"\" !important;\n    display: none !important;\n}"; | ||
|  | var createPseudoHideStyles = function (body) { | ||
|  |     createStyles(body, "." + PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + PSEUDO_BEFORE + PSEUDO_HIDE_ELEMENT_STYLE + "\n         ." + PSEUDO_HIDE_ELEMENT_CLASS_AFTER + PSEUDO_AFTER + PSEUDO_HIDE_ELEMENT_STYLE); | ||
|  | }; | ||
|  | var createStyles = function (body, styles) { | ||
|  |     var document = body.ownerDocument; | ||
|  |     if (document) { | ||
|  |         var style = document.createElement('style'); | ||
|  |         style.textContent = styles; | ||
|  |         body.appendChild(style); | ||
|  |     } | ||
|  | }; | ||
|  | //# sourceMappingURL=document-cloner.js.map
 |