| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| import { Injectable } from '@angular/core'; |
| import { Platform } from '@angular/cdk/platform'; |
| import * as i0 from "@angular/core"; |
| import * as i1 from "@angular/cdk/platform"; |
| /** Global registry for all dynamically-created, injected media queries. */ |
| const mediaQueriesForWebkitCompatibility = new Set(); |
| /** Style tag that holds all of the dynamically-created media queries. */ |
| let mediaQueryStyleNode; |
| /** A utility for calling matchMedia queries. */ |
| export class MediaMatcher { |
| constructor(_platform) { |
| this._platform = _platform; |
| this._matchMedia = this._platform.isBrowser && window.matchMedia ? |
| // matchMedia is bound to the window scope intentionally as it is an illegal invocation to |
| // call it from a different scope. |
| window.matchMedia.bind(window) : |
| noopMatchMedia; |
| } |
| /** |
| * Evaluates the given media query and returns the native MediaQueryList from which results |
| * can be retrieved. |
| * Confirms the layout engine will trigger for the selector query provided and returns the |
| * MediaQueryList for the query provided. |
| */ |
| matchMedia(query) { |
| if (this._platform.WEBKIT) { |
| createEmptyStyleRule(query); |
| } |
| return this._matchMedia(query); |
| } |
| } |
| MediaMatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function MediaMatcher_Factory() { return new MediaMatcher(i0.ɵɵinject(i1.Platform)); }, token: MediaMatcher, providedIn: "root" }); |
| MediaMatcher.decorators = [ |
| { type: Injectable, args: [{ providedIn: 'root' },] } |
| ]; |
| MediaMatcher.ctorParameters = () => [ |
| { type: Platform } |
| ]; |
| /** |
| * For Webkit engines that only trigger the MediaQueryListListener when |
| * there is at least one CSS selector for the respective media query. |
| */ |
| function createEmptyStyleRule(query) { |
| if (mediaQueriesForWebkitCompatibility.has(query)) { |
| return; |
| } |
| try { |
| if (!mediaQueryStyleNode) { |
| mediaQueryStyleNode = document.createElement('style'); |
| mediaQueryStyleNode.setAttribute('type', 'text/css'); |
| document.head.appendChild(mediaQueryStyleNode); |
| } |
| if (mediaQueryStyleNode.sheet) { |
| mediaQueryStyleNode.sheet |
| .insertRule(`@media ${query} {.fx-query-test{ }}`, 0); |
| mediaQueriesForWebkitCompatibility.add(query); |
| } |
| } |
| catch (e) { |
| console.error(e); |
| } |
| } |
| /** No-op matchMedia replacement for non-browser platforms. */ |
| function noopMatchMedia(query) { |
| // Use `as any` here to avoid adding additional necessary properties for |
| // the noop matcher. |
| return { |
| matches: query === 'all' || query === '', |
| media: query, |
| addListener: () => { }, |
| removeListener: () => { } |
| }; |
| } |
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QuaGVhZCEuYXBwZW5kQ2hpbGQobWVkaWFRdWVyeVN0eWxlTm9kZSk7XG4gICAgfVxuXG4gICAgaWYgKG1lZGlhUXVlcnlTdHlsZU5vZGUuc2hlZXQpIHtcbiAgICAgIChtZWRpYVF1ZXJ5U3R5bGVOb2RlLnNoZWV0IGFzIENTU1N0eWxlU2hlZXQpXG4gICAgICAgICAgLmluc2VydFJ1bGUoYEBtZWRpYSAke3F1ZXJ5fSB7LmZ4LXF1ZXJ5LXRlc3R7IH19YCwgMCk7XG4gICAgICBtZWRpYVF1ZXJpZXNGb3JXZWJraXRDb21wYXRpYmlsaXR5LmFkZChxdWVyeSk7XG4gICAgfVxuICB9IGNhdGNoIChlKSB7XG4gICAgY29uc29sZS5lcnJvcihlKTtcbiAgfVxufVxuXG4vKiogTm8tb3AgbWF0Y2hNZWRpYSByZXBsYWNlbWVudCBmb3Igbm9uLWJyb3dzZXIgcGxhdGZvcm1zLiAqL1xuZnVuY3Rpb24gbm9vcE1hdGNoTWVkaWEocXVlcnk6IHN0cmluZyk6IE1lZGlhUXVlcnlMaXN0IHtcbiAgLy8gVXNlIGBhcyBhbnlgIGhlcmUgdG8gYXZvaWQgYWRkaW5nIGFkZGl0aW9uYWwgbmVjZXNzYXJ5IHByb3BlcnRpZXMgZm9yXG4gIC8vIHRoZSBub29wIG1hdGNoZXIuXG4gIHJldHVybiB7XG4gICAgbWF0Y2hlczogcXVlcnkgPT09ICdhbGwnIHx8IHF1ZXJ5ID09PSAnJyxcbiAgICBtZWRpYTogcXVlcnksXG4gICAgYWRkTGlzdGVuZXI6ICgpID0+IHt9LFxuICAgIHJlbW92ZUxpc3RlbmVyOiAoKSA9PiB7fVxuICB9IGFzIGFueTtcbn1cbiJdfQ== |