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'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.cloneWindow = exports.DocumentCloner = undefined;

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _Bounds = require('./Bounds');

var _Proxy = require('./Proxy');

var _ResourceLoader = require('./ResourceLoader');

var _ResourceLoader2 = _interopRequireDefault(_ResourceLoader);

var _Util = require('./Util');

var _background = require('./parsing/background');

var _CanvasRenderer = require('./renderer/CanvasRenderer');

var _CanvasRenderer2 = _interopRequireDefault(_CanvasRenderer);

var _PseudoNodeContent = require('./PseudoNodeContent');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var IGNORE_ATTRIBUTE = 'data-html2canvas-ignore';

var DocumentCloner = exports.DocumentCloner = function () {
    function DocumentCloner(element, options, logger, copyInline, renderer) {
        _classCallCheck(this, DocumentCloner);

        this.referenceElement = element;
        this.scrolledElements = [];
        this.copyStyles = copyInline;
        this.inlineImages = copyInline;
        this.logger = logger;
        this.options = options;
        this.renderer = renderer;
        this.resourceLoader = new _ResourceLoader2.default(options, logger, window);
        this.pseudoContentData = {
            counters: {},
            quoteDepth: 0
        };
        // $FlowFixMe
        this.documentElement = this.cloneNode(element.ownerDocument.documentElement);
    }

    _createClass(DocumentCloner, [{
        key: 'inlineAllImages',
        value: function inlineAllImages(node) {
            var _this = this;

            if (this.inlineImages && node) {
                var style = node.style;
                Promise.all((0, _background.parseBackgroundImage)(style.backgroundImage).map(function (backgroundImage) {
                    if (backgroundImage.method === 'url') {
                        return _this.resourceLoader.inlineImage(backgroundImage.args[0]).then(function (img) {
                            return img && typeof img.src === 'string' ? 'url("' + img.src + '")' : 'none';
                        }).catch(function (e) {
                            if (process.env.NODE_ENV !== 'production') {
                                _this.logger.log('Unable to load image', e);
                            }
                        });
                    }
                    return Promise.resolve('' + backgroundImage.prefix + backgroundImage.method + '(' + backgroundImage.args.join(',') + ')');
                })).then(function (backgroundImages) {
                    if (backgroundImages.length > 1) {
                        // TODO Multiple backgrounds somehow broken in Chrome
                        style.backgroundColor = '';
                    }
                    style.backgroundImage = backgroundImages.join(',');
                });

                if (node instanceof HTMLImageElement) {
                    this.resourceLoader.inlineImage(node.src).then(function (img) {
                        if (img && node instanceof HTMLImageElement && node.parentNode) {
                            var parentNode = node.parentNode;
                            var clonedChild = (0, _Util.copyCSSStyles)(node.style, img.cloneNode(false));
                            parentNode.replaceChild(clonedChild, node);
                        }
                    }).catch(function (e) {
                        if (process.env.NODE_ENV !== 'production') {
                            _this.logger.log('Unable to load image', e);
                        }
                    });
                }
            }
        }
    }, {
        key: 'inlineFonts',
        value: function inlineFonts(document) {
            var _this2 = this;

            return Promise.all(Array.from(document.styleSheets).map(function (sheet) {
                if (sheet.href) {
                    return fetch(sheet.href).then(function (res) {
                        return res.text();
                    }).then(function (text) {
                        return createStyleSheetFontsFromText(text, sheet.href);
                    }).catch(function (e) {
                        if (process.env.NODE_ENV !== 'production') {
                            _this2.logger.log('Unable to load stylesheet', e);
                        }
                        return [];
                    });
                }
                return getSheetFonts(sheet, document);
            })).then(function (fonts) {
                return fonts.reduce(function (acc, font) {
                    return acc.concat(font);
                }, []);
            }).then(function (fonts) {
                return Promise.all(fonts.map(function (font) {
                    return fetch(font.formats[0].src).then(function (response) {
                        return response.blob();
                    }).then(function (blob) {
                        return new Promise(function (resolve, reject) {
                            var reader = new FileReader();
                            reader.onerror = reject;
                            reader.onload = function () {
                                // $FlowFixMe
                                var result = reader.result;
                                resolve(result);
                            };
                            reader.readAsDataURL(blob);
                        });
                    }).then(function (dataUri) {
                        font.fontFace.setProperty('src', 'url("' + dataUri + '")');
                        return '@font-face {' + font.fontFace.cssText + ' ';
                    });
                }));
            }).then(function (fontCss) {
                var style = document.createElement('style');
                style.textContent = fontCss.join('\n');
                _this2.documentElement.appendChild(style);
            });
        }
    }, {
        key: 'createElementClone',
        value: function createElementClone(node) {
            var _this3 = this;

            if (this.copyStyles && node instanceof HTMLCanvasElement) {
                var img = node.ownerDocument.createElement('img');
                try {
                    img.src = node.toDataURL();
                    return img;
                } catch (e) {
                    if (process.env.NODE_ENV !== 'production') {
                        this.logger.log('Unable to clone canvas contents, canvas is tainted');
                    }
                }
            }

            if (node instanceof HTMLIFrameElement) {
                var tempIframe = node.cloneNode(false);
                var iframeKey = generateIframeKey();
                tempIframe.setAttribute('data-html2canvas-internal-iframe-key', iframeKey);

                var _parseBounds = (0, _Bounds.parseBounds)(node, 0, 0),
                    width = _parseBounds.width,
                    height = _parseBounds.height;

                this.resourceLoader.cache[iframeKey] = getIframeDocumentElement(node, this.options).then(function (documentElement) {
                    return _this3.renderer(documentElement, {
                        async: _this3.options.async,
                        allowTaint: _this3.options.allowTaint,
                        backgroundColor: '#ffffff',
                        canvas: null,
                        imageTimeout: _this3.options.imageTimeout,
                        logging: _this3.options.logging,
                        proxy: _this3.options.proxy,
                        removeContainer: _this3.options.removeContainer,
                        scale: _this3.options.scale,
                        foreignObjectRendering: _this3.options.foreignObjectRendering,
                        useCORS: _this3.options.useCORS,
                        target: new _CanvasRenderer2.default(),
                        width: width,
                        height: height,
                        x: 0,
                        y: 0,
                        windowWidth: documentElement.ownerDocument.defaultView.innerWidth,
                        windowHeight: documentElement.ownerDocument.defaultView.innerHeight,
                        scrollX: documentElement.ownerDocument.defaultView.pageXOffset,
                        scrollY: documentElement.ownerDocument.defaultView.pageYOffset
                    }, _this3.logger.child(iframeKey));
                }).then(function (canvas) {
                    return new Promise(function (resolve, reject) {
                        var iframeCanvas = document.createElement('img');
                        iframeCanvas.onload = function () {
                            return resolve(canvas);
                        };
                        iframeCanvas.onerror = reject;
                        iframeCanvas.src = canvas.toDataURL();
                        if (tempIframe.parentNode) {
                            tempIframe.parentNode.replaceChild((0, _Util.copyCSSStyles)(node.ownerDocument.defaultView.getComputedStyle(node), iframeCanvas), tempIframe);
                        }
                    });
                });
                return tempIframe;
            }

            if (node instanceof HTMLStyleElement && node.sheet && node.sheet.cssRules) {
                var css = [].slice.call(node.sheet.cssRules, 0).reduce(function (css, rule) {
                    try {
                        if (rule && rule.cssText) {
                            return css + rule.cssText;
                        }
                        return css;
                    } catch (err) {
                        _this3.logger.log('Unable to access cssText property', rule.name);
                        return css;
                    }
                }, '');
                var style = node.cloneNode(false);
                style.textContent = css;
                return style;
            }

            return node.cloneNode(false);
        }
    }, {
        key: 'cloneNode',
        value: function cloneNode(node) {
            var clone = node.nodeType === Node.TEXT_NODE ? document.createTextNode(node.nodeValue) : this.createElementClone(node);

            var window = node.ownerDocument.defaultView;
            var style = node instanceof window.HTMLElement ? window.getComputedStyle(node) : null;
            var styleBefore = node instanceof window.HTMLElement ? window.getComputedStyle(node, ':before') : null;
            var styleAfter = node instanceof window.HTMLElement ? window.getComputedStyle(node, ':after') : null;

            if (this.referenceElement === node && clone instanceof window.HTMLElement) {
                this.clonedReferenceElement = clone;
            }

            if (clone instanceof window.HTMLBodyElement) {
                createPseudoHideStyles(clone);
            }

            var counters = (0, _PseudoNodeContent.parseCounterReset)(style, this.pseudoContentData);
            var contentBefore = (0, _PseudoNodeContent.resolvePseudoContent)(node, styleBefore, this.pseudoContentData);

            for (var child = node.firstChild; child; child = child.nextSibling) {
                if (child.nodeType !== Node.ELEMENT_NODE || child.nodeName !== 'SCRIPT' &&
                // $FlowFixMe
                !child.hasAttribute(IGNORE_ATTRIBUTE) && (typeof this.options.ignoreElements !== 'function' ||
                // $FlowFixMe
                !this.options.ignoreElements(child))) {
                    if (!this.copyStyles || child.nodeName !== 'STYLE') {
                        clone.appendChild(this.cloneNode(child));
                    }
                }
            }

            var contentAfter = (0, _PseudoNodeContent.resolvePseudoContent)(node, styleAfter, this.pseudoContentData);
            (0, _PseudoNodeContent.popCounters)(counters, this.pseudoContentData);

            if (node instanceof window.HTMLElement && clone instanceof window.HTMLElement) {
                if (styleBefore) {
                    this.inlineAllImages(inlinePseudoElement(node, clone, styleBefore, contentBefore, PSEUDO_BEFORE));
                }
                if (styleAfter) {
                    this.inlineAllImages(inlinePseudoElement(node, clone, styleAfter, contentAfter, PSEUDO_AFTER));
                }
                if (style && this.copyStyles && !(node instanceof HTMLIFrameElement)) {
                    (0, _Util.copyCSSStyles)(style, clone);
                }
                this.inlineAllImages(clone);
                if (node.scrollTop !== 0 || node.scrollLeft !== 0) {
                    this.scrolledElements.push([clone, node.scrollLeft, node.scrollTop]);
                }
                switch (node.nodeName) {
                    case 'CANVAS':
                        if (!this.copyStyles) {
                            cloneCanvasContents(node, clone);
                        }
                        break;
                    case 'TEXTAREA':
                    case 'SELECT':
                        clone.value = node.value;
                        break;
                }
            }
            return clone;
        }
    }]);

    return DocumentCloner;
}();

var getSheetFonts = function getSheetFonts(sheet, document) {
    // $FlowFixMe
    return (sheet.cssRules ? Array.from(sheet.cssRules) : []).filter(function (rule) {
        return rule.type === CSSRule.FONT_FACE_RULE;
    }).map(function (rule) {
        var src = (0, _background.parseBackgroundImage)(rule.style.getPropertyValue('src'));
        var formats = [];
        for (var i = 0; i < src.length; i++) {
            if (src[i].method === 'url' && src[i + 1] && src[i + 1].method === 'format') {
                var a = document.createElement('a');
                a.href = src[i].args[0];
                if (document.body) {
                    document.body.appendChild(a);
                }

                var font = {
                    src: a.href,
                    format: src[i + 1].args[0]
                };
                formats.push(font);
            }
        }

        return {
            // TODO select correct format for browser),

            formats: formats.filter(function (font) {
                return (/^woff/i.test(font.format)
                );
            }),
            fontFace: rule.style
        };
    }).filter(function (font) {
        return font.formats.length;
    });
};

var createStyleSheetFontsFromText = function createStyleSheetFontsFromText(text, baseHref) {
    var doc = document.implementation.createHTMLDocument('');
    var base = document.createElement('base');
    // $FlowFixMe
    base.href = baseHref;
    var style = document.createElement('style');

    style.textContent = text;
    if (doc.head) {
        doc.head.appendChild(base);
    }
    if (doc.body) {
        doc.body.appendChild(style);
    }

    return style.sheet ? getSheetFonts(style.sheet, doc) : [];
};

var restoreOwnerScroll = function restoreOwnerScroll(ownerDocument, x, y) {
    if (ownerDocument.defaultView && (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) {
        ownerDocument.defaultView.scrollTo(x, y);
    }
};

var cloneCanvasContents = function cloneCanvasContents(canvas, clonedCanvas) {
    try {
        if (clonedCanvas) {
            clonedCanvas.width = canvas.width;
            clonedCanvas.height = canvas.height;
            var ctx = canvas.getContext('2d');
            var clonedCtx = clonedCanvas.getContext('2d');
            if (ctx) {
                clonedCtx.putImageData(ctx.getImageData(0, 0, canvas.width, canvas.height), 0, 0);
            } else {
                clonedCtx.drawImage(canvas, 0, 0);
            }
        }
    } catch (e) {}
};

var inlinePseudoElement = function inlinePseudoElement(node, clone, style, contentItems, pseudoElt) {
    if (!style || !style.content || style.content === 'none' || style.content === '-moz-alt-content' || style.display === 'none') {
        return;
    }

    var anonymousReplacedElement = clone.ownerDocument.createElement('html2canvaspseudoelement');
    (0, _Util.copyCSSStyles)(style, anonymousReplacedElement);

    if (contentItems) {
        var len = contentItems.length;
        for (var i = 0; i < len; i++) {
            var item = contentItems[i];
            switch (item.type) {
                case _PseudoNodeContent.PSEUDO_CONTENT_ITEM_TYPE.IMAGE:
                    var img = clone.ownerDocument.createElement('img');
                    img.src = (0, _background.parseBackgroundImage)('url(' + item.value + ')')[0].args[0];
                    img.style.opacity = '1';
                    anonymousReplacedElement.appendChild(img);
                    break;
                case _PseudoNodeContent.PSEUDO_CONTENT_ITEM_TYPE.TEXT:
                    anonymousReplacedElement.appendChild(clone.ownerDocument.createTextNode(item.value));
                    break;
            }
        }
    }

    anonymousReplacedElement.className = PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + ' ' + PSEUDO_HIDE_ELEMENT_CLASS_AFTER;
    clone.className += pseudoElt === PSEUDO_BEFORE ? ' ' + PSEUDO_HIDE_ELEMENT_CLASS_BEFORE : ' ' + PSEUDO_HIDE_ELEMENT_CLASS_AFTER;
    if (pseudoElt === PSEUDO_BEFORE) {
        clone.insertBefore(anonymousReplacedElement, clone.firstChild);
    } else {
        clone.appendChild(anonymousReplacedElement);
    }

    return anonymousReplacedElement;
};

var URL_REGEXP = /^url\((.+)\)$/i;
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 createPseudoHideStyles(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 createStyles(body, styles) {
    var style = body.ownerDocument.createElement('style');
    style.innerHTML = styles;
    body.appendChild(style);
};

var initNode = function initNode(_ref) {
    var _ref2 = _slicedToArray(_ref, 3),
        element = _ref2[0],
        x = _ref2[1],
        y = _ref2[2];

    element.scrollLeft = x;
    element.scrollTop = y;
};

var generateIframeKey = function generateIframeKey() {
    return Math.ceil(Date.now() + Math.random() * 10000000).toString(16);
};

var DATA_URI_REGEXP = /^data:text\/(.+);(base64)?,(.*)$/i;

var getIframeDocumentElement = function getIframeDocumentElement(node, options) {
    try {
        return Promise.resolve(node.contentWindow.document.documentElement);
    } catch (e) {
        return options.proxy ? (0, _Proxy.Proxy)(node.src, options).then(function (html) {
            var match = html.match(DATA_URI_REGEXP);
            if (!match) {
                return Promise.reject();
            }

            return match[2] === 'base64' ? window.atob(decodeURIComponent(match[3])) : decodeURIComponent(match[3]);
        }).then(function (html) {
            return createIframeContainer(node.ownerDocument, (0, _Bounds.parseBounds)(node, 0, 0)).then(function (cloneIframeContainer) {
                var cloneWindow = cloneIframeContainer.contentWindow;
                var documentClone = cloneWindow.document;

                documentClone.open();
                documentClone.write(html);
                var iframeLoad = iframeLoader(cloneIframeContainer).then(function () {
                    return documentClone.documentElement;
                });

                documentClone.close();
                return iframeLoad;
            });
        }) : Promise.reject();
    }
};

var createIframeContainer = function createIframeContainer(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');
    if (!ownerDocument.body) {
        return Promise.reject(process.env.NODE_ENV !== 'production' ? 'Body element not found in Document that is getting rendered' : '');
    }

    ownerDocument.body.appendChild(cloneIframeContainer);

    return Promise.resolve(cloneIframeContainer);
};

var iframeLoader = function iframeLoader(cloneIframeContainer) {
    var cloneWindow = cloneIframeContainer.contentWindow;
    var documentClone = cloneWindow.document;

    return new Promise(function (resolve, reject) {
        cloneWindow.onload = cloneIframeContainer.onload = documentClone.onreadystatechange = function () {
            var interval = setInterval(function () {
                if (documentClone.body.childNodes.length > 0 && documentClone.readyState === 'complete') {
                    clearInterval(interval);
                    resolve(cloneIframeContainer);
                }
            }, 50);
        };
    });
};

var cloneWindow = exports.cloneWindow = function cloneWindow(ownerDocument, bounds, referenceElement, options, logger, renderer) {
    var cloner = new DocumentCloner(referenceElement, options, logger, false, renderer);
    var scrollX = ownerDocument.defaultView.pageXOffset;
    var scrollY = ownerDocument.defaultView.pageYOffset;

    return createIframeContainer(ownerDocument, bounds).then(function (cloneIframeContainer) {
        var cloneWindow = cloneIframeContainer.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(cloneIframeContainer).then(function () {
            cloner.scrolledElements.forEach(initNode);
            cloneWindow.scrollTo(bounds.left, bounds.top);
            if (/(iPad|iPhone|iPod)/g.test(navigator.userAgent) && (cloneWindow.scrollY !== bounds.top || cloneWindow.scrollX !== bounds.left)) {
                documentClone.documentElement.style.top = -bounds.top + 'px';
                documentClone.documentElement.style.left = -bounds.left + 'px';
                documentClone.documentElement.style.position = 'absolute';
            }

            var result = Promise.resolve([cloneIframeContainer, cloner.clonedReferenceElement, cloner.resourceLoader]);

            var onclone = options.onclone;

            return cloner.clonedReferenceElement instanceof cloneWindow.HTMLElement || cloner.clonedReferenceElement instanceof ownerDocument.defaultView.HTMLElement || cloner.clonedReferenceElement instanceof HTMLElement ? typeof onclone === 'function' ? Promise.resolve().then(function () {
                return onclone(documentClone);
            }).then(function () {
                return result;
            }) : result : Promise.reject(process.env.NODE_ENV !== 'production' ? 'Error finding the ' + referenceElement.nodeName + ' in the cloned document' : '');
        });

        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(referenceElement.ownerDocument, scrollX, scrollY);
        documentClone.replaceChild(documentClone.adoptNode(cloner.documentElement), documentClone.documentElement);
        documentClone.close();

        return iframeLoad;
    });
};

var serializeDoctype = function serializeDoctype(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;
};