| [6a3a178] | 1 | {"version":3,"file":"layout.js","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/public-api.ts","../../../../../../src/cdk/layout/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\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} 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(private _platform: Platform) {\n this._matchMedia = 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);\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) {\n if (mediaQueriesForWebkitCompatibility.has(query)) {\n return;\n }\n\n try {\n if (!mediaQueryStyleNode) {\n mediaQueryStyleNode = document.createElement('style');\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 removeListener: () => {}\n } as any;\n}\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 */\n\nimport {coerceArray} from '@angular/cdk/coercion';\nimport {Injectable, NgZone, OnDestroy} from '@angular/core';\nimport {combineLatest, concat, Observable, Observer, Subject} from 'rxjs';\nimport {debounceTime, map, skip, startWith, take, takeUntil} from 'rxjs/operators';\nimport {MediaMatcher} from './media-matcher';\n\n\n/** The current state of a layout breakpoint. */\nexport interface BreakpointState {\n /** Whether the breakpoint is currently matching. */\n matches: boolean;\n /**\n * A key boolean pair for each query provided to the observe method,\n * with its current matched state.\n */\n breakpoints: {\n [key: string]: boolean;\n };\n}\n\n/** The current state of a layout breakpoint. */\ninterface InternalBreakpointState {\n /** Whether the breakpoint is currently matching. */\n matches: boolean;\n /** The media query being to be matched */\n query: string;\n}\n\ninterface Query {\n observable: Observable<InternalBreakpointState>;\n mql: MediaQueryList;\n}\n\n/** Utility for checking the matching state of @media queries. */\n@Injectable({providedIn: 'root'})\nexport class BreakpointObserver implements OnDestroy {\n /** A map of all media queries currently being listened for. */\n private _queries = new Map<string, Query>();\n /** A subject for all other observables to takeUntil based on. */\n private readonly _destroySubject = new Subject<void>();\n\n constructor(private _mediaMatcher: MediaMatcher, private _zone: NgZone) {}\n\n /** Completes the active subject, signalling to all other observables to complete. */\n ngOnDestroy() {\n this._destroySubject.next();\n this._destroySubject.complete();\n }\n\n /**\n * Whether one or more media queries match the current viewport size.\n * @param value One or more media queries to check.\n * @returns Whether any of the media queries match.\n */\n isMatched(value: string | readonly string[]): boolean {\n const queries = splitQueries(coerceArray(value));\n return queries.some(mediaQuery => this._registerQuery(mediaQuery).mql.matches);\n }\n\n /**\n * Gets an observable of results for the given queries that will emit new results for any changes\n * in matching of the given queries.\n * @param value One or more media queries to check.\n * @returns A stream of matches for the given queries.\n */\n observe(value: string | readonly string[]): Observable<BreakpointState> {\n const queries = splitQueries(coerceArray(value));\n const observables = queries.map(query => this._registerQuery(query).observable);\n\n let stateObservable = combineLatest(observables);\n // Emit the first state immediately, and then debounce the subsequent emissions.\n stateObservable = concat(\n stateObservable.pipe(take(1)),\n stateObservable.pipe(skip(1), debounceTime(0)));\n return stateObservable.pipe(map(breakpointStates => {\n const response: BreakpointState = {\n matches: false,\n breakpoints: {},\n };\n breakpointStates.forEach(({matches, query}) => {\n response.matches = response.matches || matches;\n response.breakpoints[query] = matches;\n });\n return response;\n }));\n }\n\n /** Registers a specific query to be listened for. */\n private _registerQuery(query: string): Query {\n // Only set up a new MediaQueryList if it is not already being listened for.\n if (this._queries.has(query)) {\n return this._queries.get(query)!;\n }\n\n const mql = this._mediaMatcher.matchMedia(query);\n\n // Create callback for match changes and add it is as a listener.\n const queryObservable = new Observable((observer: Observer<MediaQueryList>) => {\n // Listener callback methods are wrapped to be placed back in ngZone. Callbacks must be placed\n // back into the zone because matchMedia is only included in Zone.js by loading the\n // webapis-media-query.js file alongside the zone.js file. Additionally, some browsers do not\n // have MediaQueryList inherit from EventTarget, which causes inconsistencies in how Zone.js\n // patches it.\n const handler = (e: any) => this._zone.run(() => observer.next(e));\n mql.addListener(handler);\n\n return () => {\n mql.removeListener(handler);\n };\n }).pipe(\n startWith(mql),\n map(({matches}) => ({query, matches})),\n takeUntil(this._destroySubject)\n );\n\n // Add the MediaQueryList to the set of queries.\n const output = {observable: queryObservable, mql};\n this._queries.set(query, output);\n return output;\n }\n}\n\n/**\n * Split each query string into separate query strings if two queries are provided as comma\n * separated.\n */\nfunction splitQueries(queries: readonly string[]): readonly string[] {\n return queries.map(query => query.split(','))\n .reduce((a1, a2) => a1.concat(a2))\n .map(query => query.trim());\n}\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 */\n// PascalCase is being used as Breakpoints is used like an enum.\n// tslint:disable-next-line:variable-name\nexport const Breakpoints = {\n XSmall: '(max-width: 599.98px)',\n Small: '(min-width: 600px) and (max-width: 959.98px)',\n Medium: '(min-width: 960px) and (max-width: 1279.98px)',\n Large: '(min-width: 1280px) and (max-width: 1919.98px)',\n XLarge: '(min-width: 1920px)',\n\n Handset: '(max-width: 599.98px) and (orientation: portrait), ' +\n '(max-width: 959.98px) and (orientation: landscape)',\n Tablet: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait), ' +\n '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n Web: '(min-width: 840px) and (orientation: portrait), ' +\n '(min-width: 1280px) and (orientation: landscape)',\n\n HandsetPortrait: '(max-width: 599.98px) and (orientation: portrait)',\n TabletPortrait: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait)',\n WebPortrait: '(min-width: 840px) and (orientation: portrait)',\n\n HandsetLandscape: '(max-width: 959.98px) and (orientation: landscape)',\n TabletLandscape: '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n WebLandscape: '(min-width: 1280px) and (orientation: landscape)',\n};\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 */\n\nexport {LayoutModule} from './layout-module';\nexport {BreakpointObserver, BreakpointState} from './breakpoints-observer';\nexport {Breakpoints} from './breakpoints';\nexport {MediaMatcher} from './media-matcher';\n","/**\n * Generated bundle index. 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