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{"version":3,"file":"layout.mjs","sources":["../../../../../../src/cdk/layout/layout-module.ts","../../../../../../src/cdk/layout/media-matcher.ts","../../../../../../src/cdk/layout/breakpoints-observer.ts","../../../../../../src/cdk/layout/breakpoints.ts","../../../../../../src/cdk/layout/layout_public_index.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {NgModule} from '@angular/core';\n\n@NgModule({})\nexport class LayoutModule {}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {Injectable, CSP_NONCE, Optional, Inject} from '@angular/core';\nimport {Platform} from '@angular/cdk/platform';\n\n/** Global registry for all dynamically-created, injected media queries. */\nconst mediaQueriesForWebkitCompatibility: Set<string> = new Set<string>();\n\n/** Style tag that holds all of the dynamically-created media queries. */\nlet mediaQueryStyleNode: HTMLStyleElement | undefined;\n\n/** A utility for calling matchMedia queries. */\n@Injectable({providedIn: 'root'})\nexport class MediaMatcher {\n /** The internal matchMedia method to return back a MediaQueryList like object. */\n private _matchMedia: (query: string) => MediaQueryList;\n\n constructor(\n private _platform: Platform,\n @Optional() @Inject(CSP_NONCE) private _nonce?: string | null,\n ) {\n this._matchMedia =\n this._platform.isBrowser && window.matchMedia\n ? // matchMedia is bound to the window scope intentionally as it is an illegal invocation to\n // call it from a different scope.\n window.matchMedia.bind(window)\n : noopMatchMedia;\n }\n\n /**\n * Evaluates the given media query and returns the native MediaQueryList from which results\n * can be retrieved.\n * Confirms the layout engine will trigger for the selector query provided and returns the\n * MediaQueryList for the query provided.\n */\n matchMedia(query: string): MediaQueryList {\n if (this._platform.WEBKIT || this._platform.BLINK) {\n createEmptyStyleRule(query, this._nonce);\n }\n return this._matchMedia(query);\n }\n}\n\n/**\n * Creates an empty stylesheet that is used to work around browser inconsistencies related to\n * `matchMedia`. At the time of writing, it handles the following cases:\n * 1. On WebKit browsers, a media query has to have at least one rule in order for `matchMedia`\n * to fire. We work around it by declaring a dummy stylesheet with a `@media` declaration.\n * 2. In some cases Blink browsers will stop firing the `matchMedia` listener if none of the rules\n * inside the `@media` match existing elements on the page. We work around it by having one rule\n * targeting the `body`. See https://github.com/angular/components/issues/23546.\n */\nfunction createEmptyStyleRule(query: string, nonce: string | undefined | null) {\n if (mediaQueriesForWebkitCompatibility.has(query)) {\n return;\n }\n\n try {\n if (!mediaQueryStyleNode) {\n mediaQueryStyleNode = document.createElement('style');\n\n if (nonce) {\n mediaQueryStyleNode.nonce = nonce;\n }\n\n mediaQueryStyleNode.setAttribute('type', 'text/css');\n document.head!.appendChild(mediaQueryStyleNode);\n }\n\n if (mediaQueryStyleNode.sheet) {\n mediaQueryStyleNode.sheet.insertRule(`@media ${query} {body{ }}`, 0);\n mediaQueriesForWebkitCompatibility.add(query);\n }\n } catch (e) {\n console.error(e);\n }\n}\n\n/** No-op matchMedia replacement for non-browser platforms. */\nfunction noopMatchMedia(query: string): MediaQueryList {\n // Use `as any` here to avoid adding additional necessary properties for\n // the noop matcher.\n return {\n matches: query === 'all' || query === '',\n media: query,\n addListener: () => {},\n re
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