140 lines
4.4 KiB
TypeScript
140 lines
4.4 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {NgZone} from '@angular/core';
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import {ɵgetDOM as getDOM} from '@angular/platform-browser';
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import {global} from './facade/lang';
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export let browserDetection: BrowserDetection;
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export class BrowserDetection {
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private _overrideUa: string;
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private get _ua(): string {
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if (typeof this._overrideUa === 'string') {
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return this._overrideUa;
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}
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return getDOM() ? getDOM().getUserAgent() : '';
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}
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static setup() { browserDetection = new BrowserDetection(null); }
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constructor(ua: string) { this._overrideUa = ua; }
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get isFirefox(): boolean { return this._ua.indexOf('Firefox') > -1; }
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get isAndroid(): boolean {
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return this._ua.indexOf('Mozilla/5.0') > -1 && this._ua.indexOf('Android') > -1 &&
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this._ua.indexOf('AppleWebKit') > -1 && this._ua.indexOf('Chrome') == -1 &&
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this._ua.indexOf('IEMobile') == -1;
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}
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get isEdge(): boolean { return this._ua.indexOf('Edge') > -1; }
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get isIE(): boolean { return this._ua.indexOf('Trident') > -1; }
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get isWebkit(): boolean {
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return this._ua.indexOf('AppleWebKit') > -1 && this._ua.indexOf('Edge') == -1 &&
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this._ua.indexOf('IEMobile') == -1;
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}
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get isIOS7(): boolean {
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return (this._ua.indexOf('iPhone OS 7') > -1 || this._ua.indexOf('iPad OS 7') > -1) &&
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this._ua.indexOf('IEMobile') == -1;
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}
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get isSlow(): boolean { return this.isAndroid || this.isIE || this.isIOS7; }
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// The Intl API is only natively supported in Chrome, Firefox, IE11 and Edge.
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// This detector is needed in tests to make the difference between:
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// 1) IE11/Edge: they have a native Intl API, but with some discrepancies
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// 2) IE9/IE10: they use the polyfill, and so no discrepancies
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get supportsNativeIntlApi(): boolean {
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return !!(<any>global).Intl && (<any>global).Intl !== (<any>global).IntlPolyfill;
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}
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get isChromeDesktop(): boolean {
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return this._ua.indexOf('Chrome') > -1 && this._ua.indexOf('Mobile Safari') == -1 &&
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this._ua.indexOf('Edge') == -1;
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}
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// "Old Chrome" means Chrome 3X, where there are some discrepancies in the Intl API.
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// Android 4.4 and 5.X have such browsers by default (respectively 30 and 39).
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get isOldChrome(): boolean {
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return this._ua.indexOf('Chrome') > -1 && this._ua.indexOf('Chrome/3') > -1 &&
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this._ua.indexOf('Edge') == -1;
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}
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}
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BrowserDetection.setup();
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export function dispatchEvent(element: any, eventType: any): void {
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getDOM().dispatchEvent(element, getDOM().createEvent(eventType));
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}
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export function el(html: string): HTMLElement {
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return <HTMLElement>getDOM().firstChild(getDOM().content(getDOM().createTemplate(html)));
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}
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export function normalizeCSS(css: string): string {
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return css.replace(/\s+/g, ' ')
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.replace(/:\s/g, ':')
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.replace(/'/g, '"')
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.replace(/ }/g, '}')
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.replace(/url\((\"|\s)(.+)(\"|\s)\)(\s*)/g, (...match: string[]) => `url("${match[2]}")`)
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.replace(/\[(.+)=([^"\]]+)\]/g, (...match: string[]) => `[${match[1]}="${match[2]}"]`);
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}
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const _singleTagWhitelist = ['br', 'hr', 'input'];
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export function stringifyElement(el: any /** TODO #9100 */): string {
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let result = '';
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if (getDOM().isElementNode(el)) {
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const tagName = getDOM().tagName(el).toLowerCase();
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// Opening tag
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result += `<${tagName}`;
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// Attributes in an ordered way
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const attributeMap = getDOM().attributeMap(el);
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const keys: string[] = Array.from(attributeMap.keys()).sort();
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for (let i = 0; i < keys.length; i++) {
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const key = keys[i];
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const attValue = attributeMap.get(key);
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if (typeof attValue !== 'string') {
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result += ` ${key}`;
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} else {
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result += ` ${key}="${attValue}"`;
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}
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}
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result += '>';
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// Children
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const childrenRoot = getDOM().templateAwareRoot(el);
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const children = childrenRoot ? getDOM().childNodes(childrenRoot) : [];
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for (let j = 0; j < children.length; j++) {
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result += stringifyElement(children[j]);
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}
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// Closing tag
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if (_singleTagWhitelist.indexOf(tagName) == -1) {
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result += `</${tagName}>`;
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}
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} else if (getDOM().isCommentNode(el)) {
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result += `<!--${getDOM().nodeValue(el)}-->`;
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} else {
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result += getDOM().getText(el);
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}
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return result;
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}
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export function createNgZone(): NgZone {
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return new NgZone({enableLongStackTrace: true});
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}
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