| 1 | 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* @dynamic is for runtime initializing DomHandler.browser\n *\n * If delete below comment, we can see this error message:\n * Metadata collected contains an error that will be reported at runtime:\n * Only initialized variables and constants can be referenced\n * because the value of this variable is needed by the template compiler.\n */\n// @dynamic\nexport class DomHandler {\n\n public static zindex: number = 1000;\n\n private static calculatedScrollbarWidth: number = null;\n\n private static calculatedScrollbarHeight: number = null;\n\n private static browser: any;\n\n public static addClass(element: any, className: string): void {\n if (element.classList)\n element.classList.add(className);\n else\n element.className += ' ' + className;\n }\n\n public static addMultipleClasses(element: any, className: string): void {\n if (element.classList) {\n let styles: string[] = className.split(' ');\n for (let i = 0; i < styles.length; i++) {\n element.classList.add(styles[i]);\n }\n\n }\n else {\n let styles: string[] = className.split(' ');\n for (let i = 0; i < styles.length; i++) {\n element.className += ' ' + styles[i];\n }\n }\n }\n\n public static removeClass(element: any, className: string): void {\n if (element.classList)\n element.classList.remove(className);\n else\n element.className = element.className.replace(new RegExp('(^|\\\\b)' + className.split(' ').join('|') + '(\\\\b|$)', 'gi'), ' ');\n }\n\n public static hasClass(element: any, className: string): boolean {\n if (element.classList)\n return element.classList.contains(className);\n else\n return new RegExp('(^| )' + className + '( |$)', 'gi').test(element.className);\n }\n\n public static siblings(element: any): any {\n return Array.prototype.filter.call(element.parentNode.children, function (child) {\n return child !== element;\n });\n }\n\n public static find(element: any, selector: string): any[] {\n return Array.from(element.querySelectorAll(selector));\n }\n\n public static findSingle(element: any, selector: string): any {\n if (element) {\n return element.querySelector(selector);\n }\n return null;\n }\n\n public static index(element: any): number {\n let children = element.parentNode.childNodes;\n let num = 0;\n for (var i = 0; i < children.length; i++) {\n if (children[i] == element) return num;\n if (children[i].nodeType == 1) num++;\n }\n return -1;\n }\n \n public static indexWithinGroup(element: any, attributeName: string): number {\n let children = element.parentNode ? element.parentNode.childNodes : [];\n let num = 0;\n for (var i = 0; i < children.length; i++) {\n if (children[i] == element) return num;\n if (children[i].attributes && children[i].attributes[attributeName] && children[i].nodeType == 1) num++;\n }\n return -1;\n }\n\n public static relativePosition(element: any, target: any): void {\n let elementDimensions = element.offsetParent ? { width: element.offsetWidth, height: element.offsetHeight } : this.getHiddenElementDimensions(element);\n const targetHeight = target.offsetHeight;\n const targetOffset = target.getBoundingClientRect();\n const viewport = this.getViewport();\n let top: number, left: number;\n\n if ((targetOffset.top + targetHeight + elementDimensions.height) > viewport.height) {\n top = -1 * (elementDimensions.height);\n if (targetOffset.top + top < 0) {\n top = -1 * targetOffset.top;\n }\n }\n else {\n top = targetHeight;\n }\n\n if (elementDimensions.width > viewport.width) {\n // element wider then viewport and cannot fit on screen (align at left side of viewport)\n left = targetOffset.left * -1;\n }\n else if ((targetOffset.left + elementDimensions.width) > viewport.width) {\n // element wider then viewport but can be fit on screen (align at right side of viewport)\n left = (targetOffset.left + elementDimensions.width - viewport.width) * -1;\n }\n else {\n // element fits on screen (align with target)\n left = 0;\n }\n\n element.style.top = top + 'px';\n element.style.left = left + 'px';\n }\n\n public static absolutePosition(element: any, target: any): void {\n let elementDimensions = element.offsetParent ? { width: element.offsetWidth, height: element.offsetHeight } : this.getHiddenElementDimensions(element);\n let elementOuterHeight = elementDimensions.height;\n let elementOuterWidth = elementDimensions.width;\n let targetOuterHeight = target.offsetHeight;\n let targetOuterWidth = target.offsetWidth;\n let targetOffset = target.getBoundingClientRect();\n let windowScrollTop = this.getWindowScrollTop();\n let windowScrollLeft = this.getWindowScrollLeft();\n let viewport = this.getViewport();\n let top, left;\n\n if (targetOffset.top + targetOuterHeight + elementOuterHeight > viewport.height) {\n top = targetOffset.top + windowScrollTop - elementOuterHeight;\n if (top < 0) {\n top = windowScrollTop;\n }\n } \n else {\n top = targetOuterHeight + targetOffset.top + windowScrollTop;\n }\n\n if (targetOffset.left + elementOuterWidth > viewport.width)\n left = Math.max(0, targetOffset.left + windowScrollLeft + targetOuterWidth - elementOuterWidth);\n else\n left = targetOffset.left + windowScrollLeft;\n\n element.style.top = top + 'px';\n element.style.left = left + 'px';\n }\n\n public static getHiddenElementOuterHeight(element: any): number {\n element.style.visibility = 'hidden';\n element.style.display = 'block';\n let elementHeight = element.offsetHeight;\n element.style.display = 'none';\n element.style.visibility = 'visible';\n\n return elementHeight;\n }\n\n public static getHiddenElementOuterWidth(element: any): number {\n element.style.visibility = 'hidden';\n element.style.display = 'block';\n let elementWidth = element.offsetWidth;\n element.style.display = 'none';\n element.style.visibility = 'visible';\n\n return elementWidth;\n }\n\n public static getHiddenElementDimensions(element: any): any {\n let dimensions: any = {};\n element.style.visibility = 'hidden';\n element.style.display = 'block';\n dimensions.width = element.offsetWidth;\n dimensions.height = element.offsetHeight;\n element.style.display = 'none';\n element.style.visibility = 'visible';\n\n return dimensions;\n }\n\n public static scrollInView(container, item) {\n let borderTopValue: string = getComputedStyle(container).getPropertyValue('borderTopWidth');\n let borderTop: number = borderTopValue ? parseFloat(borderTopValue) : 0;\n let paddingTopValue: string = getComputedStyle(container).getPropertyValue('paddingTop');\n let paddingTop: number = paddingTopValue ? parseFloat(paddingTopValue) : 0;\n let containerRect = container.getBoundingClientRect();\n let itemRect = item.getBoundingClientRect();\n let offset = (itemRect.top + document.body.scrollTop) - (containerRect.top + document.body.scrollTop) - borderTop - paddingTop;\n let scroll = container.scrollTop;\n let elementHeight = container.clientHeight;\n let itemHeight = this.getOuterHeight(item);\n\n if (offset < 0) {\n container.scrollTop = scroll + offset;\n }\n else if ((offset + itemHeight) > elementHeight) {\n container.scrollTop = scroll + offset - elementHeight + itemHeight;\n }\n }\n\n public static fadeIn(element, duration: number): void {\n element.style.opacity = 0;\n\n let last = +new Date();\n let opacity = 0;\n let tick = function () {\n opacity = +element.style.opacity.replace(\",\", \".\") + (new Date().getTime() - last) / duration;\n element.style.opacity = opacity;\n last = +new Date();\n\n if (+opacity < 1) {\n (window.requestAnimationFrame && requestAnimationFrame(tick)) || setTimeout(tick, 16);\n }\n };\n\n tick();\n }\n\n public static fadeOut(element, ms) {\n var opacity = 1,\n interval = 50,\n duration = ms,\n gap = interval / duration;\n\n let fading = setInterval(() => {\n opacity = opacity - gap;\n\n if (opacity <= 0) {\n opacity = 0;\n clearInterval(fading);\n }\n \n element.style.opacity = opacity;\n }, interval);\n }\n\n public static getWindowScrollTop(): number {\n let doc = document.documentElement;\n return (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0);\n }\n\n public static getWindowScrollLeft(): number {\n let doc = document.documentElement;\n return (window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0);\n }\n\n public static matches(element, selector: string): boolean {\n var p = Element.prototype;\n var f = p['matches'] || p.webkitMatchesSelector || p['mozMatchesSelector'] || p['msMatchesSelector'] || function (s) {\n return [].indexOf.call(document.querySelectorAll(s), this) !== -1;\n };\n return f.call(element, selector);\n }\n\n public static getOuterWidth(el, margin?) {\n let width = el.offsetWidth;\n\n if (margin) {\n let style = getComputedStyle(el);\n width += parseFloat(style.marginLeft) + parseFloat(style.marginRight);\n }\n\n return width;\n }\n\n public static getHorizontalPadding(el) {\n let style = getComputedStyle(el);\n return parseFloat(style.paddingLeft) + parseFloat(style.paddingRight);\n }\n\n public static getHorizontalMargin(el) {\n let style = getComputedStyle(el);\n return parseFloat(style.marginLeft) + parseFloat(style.marginRight);\n }\n\n public static innerWidth(el) {\n let width = el.offsetWidth;\n let style = getComputedStyle(el);\n\n width += parseFloat(style.paddingLeft) + parseFloat(style.paddingRight);\n return width;\n }\n\n public static width(el) {\n let width = el.offsetWidth;\n let style = getComputedStyle(el);\n\n width -= parseFloat(style.paddingLeft) + parseFloat(style.paddingRight);\n return width;\n }\n \n public static getInnerHeight(el) {\n let height = el.offsetHeight;\n let style = getComputedStyle(el);\n\n height += parseFloat(style.paddingTop) + parseFloat(style.paddingBottom);\n return height;\n }\n\n public static getOuterHeight(el, margin?) {\n let height = el.offsetHeight;\n\n if (margin) {\n let style = getComputedStyle(el);\n height += parseFloat(style.marginTop) + parseFloat(style.marginBottom);\n }\n\n return height;\n }\n\n public static getHeight(el): number {\n let height = el.offsetHeight;\n let style = getComputedStyle(el);\n\n height -= parseFloat(style.paddingTop) + parseFloat(style.paddingBottom) + parseFloat(style.borderTopWidth) + parseFloat(style.borderBottomWidth);\n\n return height;\n }\n\n public static getWidth(el): number {\n let width = el.offsetWidth;\n let style = getComputedStyle(el);\n\n width -= parseFloat(style.paddingLeft) + parseFloat(style.paddingRight) + parseFloat(style.borderLeftWidth) + parseFloat(style.borderRightWidth);\n\n return width;\n }\n\n public static getViewport(): any {\n let win = window,\n d = document,\n e = d.documentElement,\n g = d.getElementsByTagName('body')[0],\n w = win.innerWidth || e.clientWidth || g.clientWidth,\n h = win.innerHeight || e.clientHeight || g.clientHeight;\n\n return { width: w, height: h };\n }\n \n public static getOffset(el) {\n let rect = el.getBoundingClientRect();\n \n return {\n top: rect.top + document.body.scrollTop,\n left: rect.left + document.body.scrollLeft\n };\n }\n\n public static replaceElementWith(element: any, replacementElement: any): any {\n let parentNode = element.parentNode;\n if (!parentNode) \n throw `Can't replace element`;\n return parentNode.replaceChild(replacementElement, element);\n }\n\n public static getUserAgent(): string {\n return navigator.userAgent;\n }\n\n public static isIE() {\n var ua = window.navigator.userAgent;\n\n var msie = ua.indexOf('MSIE ');\n if (msie > 0) {\n // IE 10 or older => return version number\n return true;\n }\n\n var trident = ua.indexOf('Trident/');\n if (trident > 0) {\n // IE 11 => return version number\n var rv = ua.indexOf('rv:');\n return true;\n }\n\n var edge = ua.indexOf('Edge/');\n if (edge > 0) {\n // Edge (IE 12+) => return version number\n return true;\n }\n\n // other browser\n return false;\n }\n\n public static isIOS() {\n return /iPad|iPhone|iPod/.test(navigator.userAgent) && !window['MSStream'];\n }\n\n public static isAndroid() {\n return /(android)/i.test(navigator.userAgent);\n }\n \n public static appendChild(element: any, target: any) {\n if (this.isElement(target))\n target.appendChild(element);\n else if (target.el && target.el.nativeElement)\n target.el.nativeElement.appendChild(element);\n else\n throw 'Cannot append ' + target + ' to ' + element;\n }\n \n public static removeChild(element: any, target: any) {\n if (this.isElement(target))\n target.removeChild(element);\n else if (target.el && target.el.nativeElement)\n target.el.nativeElement.removeChild(element);\n else\n throw 'Cannot remove ' + element + ' from ' + target;\n }\n \n public static isElement(obj: any) {\n return (typeof HTMLElement === \"object\" ? obj instanceof HTMLElement :\n obj && typeof obj === \"object\" && obj !== null && obj.nodeType === 1 && typeof obj.nodeName === \"string\"\n );\n }\n \n public static calculateScrollbarWidth(el?: HTMLElement): number {\n if (el) {\n let style = getComputedStyle(el);\n return (el.offsetWidth - el.clientWidth - parseFloat(style.borderLeftWidth) - parseFloat(style.borderRightWidth));\n }\n else {\n if (this.calculatedScrollbarWidth !== null)\n return this.calculatedScrollbarWidth;\n \n let scrollDiv = document.createElement(\"div\");\n scrollDiv.className = \"ui-scrollbar-measure\";\n document.body.appendChild(scrollDiv);\n\n let scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;\n document.body.removeChild(scrollDiv);\n\n this.calculatedScrollbarWidth = scrollbarWidth;\n \n return scrollbarWidth;\n }\n }\n\n public static calculateScrollbarHeight(): number {\n if (this.calculatedScrollbarHeight !== null)\n return this.calculatedScrollbarHeight;\n \n let scrollDiv = document.createElement(\"div\");\n scrollDiv.className = \"ui-scrollbar-measure\";\n document.body.appendChild(scrollDiv);\n\n let scrollbarHeight = scrollDiv.offsetHeight - scrollDiv.clientHeight;\n document.body.removeChild(scrollDiv);\n\n this.calculatedScrollbarWidth = scrollbarHeight;\n \n return scrollbarHeight;\n }\n \n public static invokeElementMethod(element: any, methodName: string, args?: any[]): void {\n (element as any)[methodName].apply(element, args);\n }\n \n public static clearSelection(): void {\n if (window.getSelection) {\n if (window.getSelection().empty) {\n window.getSelection().empty();\n } else if (window.getSelection().removeAllRanges && window.getSelection().rangeCount > 0 && window.getSelection().getRangeAt(0).getClientRects().length > 0) {\n window.getSelection().removeAllRanges();\n }\n }\n else if (document['selection'] && document['selection'].empty) {\n try {\n document['selection'].empty();\n } catch(error) {\n //ignore IE bug\n }\n }\n }\n\n public static getBrowser() {\n if (!this.browser) {\n let matched = this.resolveUserAgent();\n this.browser = {};\n\n if (matched.browser) {\n this.browser[matched.browser] = true;\n this.browser['version'] = matched.version;\n }\n\n if (this.browser['chrome']) {\n this.browser['webkit'] = true;\n } else if (this.browser['webkit']) {\n this.browser['safari'] = true;\n }\n }\n\n return this.browser;\n }\n\n public static resolveUserAgent() {\n let ua = navigator.userAgent.toLowerCase();\n let match = /(chrome)[ \\/]([\\w.]+)/.exec(ua) ||\n /(webkit)[ \\/]([\\w.]+)/.exec(ua) ||\n /(opera)(?:.*version|)[ \\/]([\\w.]+)/.exec(ua) ||\n /(msie) ([\\w.]+)/.exec(ua) ||\n ua.indexOf(\"compatible\") < 0 && /(mozilla)(?:.*? rv:([\\w.]+)|)/.exec(ua) ||\n [];\n\n return {\n browser: match[1] || \"\",\n version: match[2] || \"0\"\n };\n }\n\n public static isInteger(value): boolean {\n if (Number.isInteger) {\n return Number.isInteger(value);\n }\n else {\n return typeof value === \"number\" && isFinite(value) && Math.floor(value) === value;\n }\n }\n\n public static isHidden(element: HTMLElement): boolean {\n return element.offsetParent === null;\n }\n\n public static getFocusableElements(element:HTMLElement) {\n let focusableElements = DomHandler.find(element,`button:not([tabindex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), \n [href][clientHeight][clientWidth]:not([tabindex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), \n input:not([tabindex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), select:not([tabindex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), \n textarea:not([tabindex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), [tabIndex]:not([tabIndex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden]), \n [contenteditable]:not([tabIndex = \"-1\"]):not([disabled]):not([style*=\"display:none\"]):not([hidden])`\n );\n\n let visibleFocusableElements = [];\n for(let focusableElement of focusableElements) {\n if (getComputedStyle(focusableElement).display != \"none\" && getComputedStyle(focusableElement).visibility != \"hidden\")\n visibleFocusableElements.push(focusableElement);\n }\n return visibleFocusableElements;\n }\n}\n"]} |