{"version":3,"file":"snack-bar.js","sources":["../../../../../../src/material/snack-bar/snack-bar-config.ts","../../../../../../src/material/snack-bar/snack-bar-ref.ts","../../../../../../src/material/snack-bar/simple-snack-bar.ts","../../../../../../src/material/snack-bar/snack-bar-animations.ts","../../../../../../src/material/snack-bar/snack-bar-container.ts","../../../../../../src/material/snack-bar/snack-bar-module.ts","../../../../../../src/material/snack-bar/snack-bar.ts","../../../../../../src/material/snack-bar/public-api.ts","../../../../../../src/material/snack-bar/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 */\n\nimport {ViewContainerRef, InjectionToken} from '@angular/core';\nimport {AriaLivePoliteness} from '@angular/cdk/a11y';\nimport {Direction} from '@angular/cdk/bidi';\n\n/** Injection token that can be used to access the data that was passed in to a snack bar. */\nexport const MAT_SNACK_BAR_DATA = new InjectionToken<any>('MatSnackBarData');\n\n/** Possible values for horizontalPosition on MatSnackBarConfig. */\nexport type MatSnackBarHorizontalPosition = 'start' | 'center' | 'end' | 'left' | 'right';\n\n/** Possible values for verticalPosition on MatSnackBarConfig. */\nexport type MatSnackBarVerticalPosition = 'top' | 'bottom';\n\n/**\n * Configuration used when opening a snack-bar.\n */\nexport class MatSnackBarConfig<D = any> {\n  /** The politeness level for the MatAriaLiveAnnouncer announcement. */\n  politeness?: AriaLivePoliteness = 'assertive';\n\n  /**\n   * Message to be announced by the LiveAnnouncer. When opening a snackbar without a custom\n   * component or template, the announcement message will default to the specified message.\n   */\n  announcementMessage?: string = '';\n\n  /**\n   * The view container that serves as the parent for the snackbar for the purposes of dependency\n   * injection. Note: this does not affect where the snackbar is inserted in the DOM.\n   */\n  viewContainerRef?: ViewContainerRef;\n\n  /** The length of time in milliseconds to wait before automatically dismissing the snack bar. */\n  duration?: number = 0;\n\n  /** Extra CSS classes to be added to the snack bar container. */\n  panelClass?: string | string[];\n\n  /** Text layout direction for the snack bar. */\n  direction?: Direction;\n\n  /** Data being injected into the child component. */\n  data?: D | null = null;\n\n  /** The horizontal position to place the snack bar. */\n  horizontalPosition?: MatSnackBarHorizontalPosition = 'center';\n\n  /** The vertical position to place the snack bar. */\n  verticalPosition?: MatSnackBarVerticalPosition = 'bottom';\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 {OverlayRef} from '@angular/cdk/overlay';\nimport {Observable, Subject} from 'rxjs';\nimport {_SnackBarContainer} from './snack-bar-container';\n\n\n/** Event that is emitted when a snack bar is dismissed. */\nexport interface MatSnackBarDismiss {\n  /** Whether the snack bar was dismissed using the action button. */\n  dismissedByAction: boolean;\n}\n\n/** Maximum amount of milliseconds that can be passed into setTimeout. */\nconst MAX_TIMEOUT = Math.pow(2, 31) - 1;\n\n/**\n * Reference to a snack bar dispatched from the snack bar service.\n */\nexport class MatSnackBarRef<T> {\n  /** The instance of the component making up the content of the snack bar. */\n  instance: T;\n\n  /**\n   * The instance of the component making up the content of the snack bar.\n   * @docs-private\n   */\n  containerInstance: _SnackBarContainer;\n\n  /** Subject for notifying the user that the snack bar has been dismissed. */\n  private readonly _afterDismissed = new Subject<MatSnackBarDismiss>();\n\n  /** Subject for notifying the user that the snack bar has opened and appeared. */\n  private readonly _afterOpened = new Subject<void>();\n\n  /** Subject for notifying the user that the snack bar action was called. */\n  private readonly _onAction = new Subject<void>();\n\n  /**\n   * Timeout ID for the duration setTimeout call. Used to clear the timeout if the snackbar is\n   * dismissed before the duration passes.\n   */\n  private _durationTimeoutId: number;\n\n  /** Whether the snack bar was dismissed using the action button. */\n  private _dismissedByAction = false;\n\n  constructor(containerInstance: _SnackBarContainer,\n              private _overlayRef: OverlayRef) {\n    this.containerInstance = containerInstance;\n    // Dismiss snackbar on action.\n    this.onAction().subscribe(() => this.dismiss());\n    containerInstance._onExit.subscribe(() => this._finishDismiss());\n  }\n\n  /** Dismisses the snack bar. */\n  dismiss(): void {\n    if (!this._afterDismissed.closed) {\n      this.containerInstance.exit();\n    }\n    clearTimeout(this._durationTimeoutId);\n  }\n\n  /** Marks the snackbar action clicked. */\n  dismissWithAction(): void {\n    if (!this._onAction.closed) {\n      this._dismissedByAction = true;\n      this._onAction.next();\n      this._onAction.complete();\n    }\n    clearTimeout(this._durationTimeoutId);\n  }\n\n\n  /**\n   * Marks the snackbar action clicked.\n   * @deprecated Use `dismissWithAction` instead.\n   * @breaking-change 8.0.0\n   */\n  closeWithAction(): void {\n    this.dismissWithAction();\n  }\n\n  /** Dismisses the snack bar after some duration */\n  _dismissAfter(duration: number): void {\n    // Note that we need to cap the duration to the maximum value for setTimeout, because\n    // it'll revert to 1 if somebody passes in something greater (e.g. `Infinity`). See #17234.\n    this._durationTimeoutId = setTimeout(() => this.dismiss(), Math.min(duration, MAX_TIMEOUT));\n  }\n\n  /** Marks the snackbar as opened */\n  _open(): void {\n    if (!this._afterOpened.closed) {\n      this._afterOpened.next();\n      this._afterOpened.complete();\n    }\n  }\n\n  /** Cleans up the DOM after closing. */\n  private _finishDismiss(): void {\n    this._overlayRef.dispose();\n\n    if (!this._onAction.closed) {\n      this._onAction.complete();\n    }\n\n    this._afterDismissed.next({dismissedByAction: this._dismissedByAction});\n    this._afterDismissed.complete();\n    this._dismissedByAction = false;\n  }\n\n  /** Gets an observable that is notified when the snack bar is finished closing. */\n  afterDismissed(): Observable<MatSnackBarDismiss> {\n    return this._afterDismissed;\n  }\n\n  /** Gets an observable that is notified when the snack bar has opened and appeared. */\n  afterOpened(): Observable<void> {\n    return this.containerInstance._onEnter;\n  }\n\n  /** Gets an observable that is notified when the snack bar action is called. */\n  onAction(): Observable<void> {\n    return this._onAction;\n  }\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 {ChangeDetectionStrategy, Component, Inject, ViewEncapsulation} from '@angular/core';\nimport {MAT_SNACK_BAR_DATA} from './snack-bar-config';\nimport {MatSnackBarRef} from './snack-bar-ref';\n\n\n/**\n * Interface for a simple snack bar component that has a message and a single action.\n */\nexport interface TextOnlySnackBar {\n  data: {message: string, action: string};\n  snackBarRef: MatSnackBarRef<TextOnlySnackBar>;\n  action: () => void;\n  hasAction: boolean;\n}\n\n/**\n * A component used to open as the default snack bar, matching material spec.\n * This should only be used internally by the snack bar service.\n */\n@Component({\n  selector: 'simple-snack-bar',\n  templateUrl: 'simple-snack-bar.html',\n  styleUrls: ['simple-snack-bar.css'],\n  encapsulation: ViewEncapsulation.None,\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  host: {\n    'class': 'mat-simple-snackbar',\n  }\n})\nexport class SimpleSnackBar implements TextOnlySnackBar {\n  /** Data that was injected into the snack bar. */\n  data: {message: string, action: string};\n\n  constructor(\n    public snackBarRef: MatSnackBarRef<SimpleSnackBar>,\n    @Inject(MAT_SNACK_BAR_DATA) data: any) {\n    this.data = data;\n  }\n\n  /** Performs the action on the snack bar. */\n  action(): void {\n    this.snackBarRef.dismissWithAction();\n  }\n\n  /** If the action button should be shown. */\n  get hasAction(): boolean {\n    return !!this.data.action;\n  }\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 */\nimport {\n  animate,\n  state,\n  style,\n  transition,\n  trigger,\n  AnimationTriggerMetadata,\n} from '@angular/animations';\n\n/**\n * Animations used by the Material snack bar.\n * @docs-private\n */\nexport const matSnackBarAnimations: {\n  readonly snackBarState: AnimationTriggerMetadata;\n} = {\n  /** Animation that shows and hides a snack bar. */\n  snackBarState: trigger('state', [\n    state('void, hidden', style({\n      transform: 'scale(0.8)',\n      opacity: 0,\n    })),\n    state('visible', style({\n      transform: 'scale(1)',\n      opacity: 1,\n    })),\n    transition('* => visible', animate('150ms cubic-bezier(0, 0, 0.2, 1)')),\n    transition('* => void, * => hidden', animate('75ms cubic-bezier(0.4, 0.0, 1, 1)', style({\n      opacity: 0\n    }))),\n  ])\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 {AnimationEvent} from '@angular/animations';\nimport {AriaLivePoliteness} from '@angular/cdk/a11y';\nimport {Platform} from '@angular/cdk/platform';\nimport {\n  BasePortalOutlet,\n  CdkPortalOutlet,\n  ComponentPortal,\n  TemplatePortal,\n  DomPortal,\n} from '@angular/cdk/portal';\nimport {\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ComponentRef,\n  ElementRef,\n  EmbeddedViewRef,\n  NgZone,\n  OnDestroy,\n  ViewChild,\n  ViewEncapsulation,\n} from '@angular/core';\nimport {Observable, Subject} from 'rxjs';\nimport {take} from 'rxjs/operators';\nimport {matSnackBarAnimations} from './snack-bar-animations';\nimport {MatSnackBarConfig} from './snack-bar-config';\n\n/**\n * Internal interface for a snack bar container.\n * @docs-private\n */\nexport interface _SnackBarContainer {\n  snackBarConfig: MatSnackBarConfig;\n  _onAnnounce: Subject<any>;\n  _onExit: Subject<any>;\n  _onEnter: Subject<any>;\n  enter: () => void;\n  exit: () => Observable<void>;\n  attachTemplatePortal: <C>(portal: TemplatePortal<C>) => EmbeddedViewRef<C>;\n  attachComponentPortal: <T>(portal: ComponentPortal<T>) => ComponentRef<T>;\n}\n\n/**\n * Internal component that wraps user-provided snack bar content.\n * @docs-private\n */\n@Component({\n  selector: 'snack-bar-container',\n  templateUrl: 'snack-bar-container.html',\n  styleUrls: ['snack-bar-container.css'],\n  // In Ivy embedded views will be change detected from their declaration place, rather than\n  // where they were stamped out. This means that we can't have the snack bar container be OnPush,\n  // because it might cause snack bars that were opened from a template not to be out of date.\n  // tslint:disable-next-line:validate-decorators\n  changeDetection: ChangeDetectionStrategy.Default,\n  encapsulation: ViewEncapsulation.None,\n  animations: [matSnackBarAnimations.snackBarState],\n  host: {\n    'class': 'mat-snack-bar-container',\n    '[@state]': '_animationState',\n    '(@state.done)': 'onAnimationEnd($event)'\n  },\n})\nexport class MatSnackBarContainer extends BasePortalOutlet\n    implements OnDestroy, _SnackBarContainer {\n  /** The number of milliseconds to wait before announcing the snack bar's content. */\n  private readonly _announceDelay: number = 150;\n\n  /** The timeout for announcing the snack bar's content. */\n  private _announceTimeoutId: number;\n\n  /** Whether the component has been destroyed. */\n  private _destroyed = false;\n\n  /** The portal outlet inside of this container into which the snack bar content will be loaded. */\n  @ViewChild(CdkPortalOutlet, {static: true}) _portalOutlet: CdkPortalOutlet;\n\n  /** Subject for notifying that the snack bar has announced to screen readers. */\n  readonly _onAnnounce: Subject<void> = new Subject();\n\n  /** Subject for notifying that the snack bar has exited from view. */\n  readonly _onExit: Subject<void> = new Subject();\n\n  /** Subject for notifying that the snack bar has finished entering the view. */\n  readonly _onEnter: Subject<void> = new Subject();\n\n  /** The state of the snack bar animations. */\n  _animationState = 'void';\n\n  /** aria-live value for the live region. */\n  _live: AriaLivePoliteness;\n\n  /**\n   * Role of the live region. This is only for Firefox as there is a known issue where Firefox +\n   * JAWS does not read out aria-live message.\n   */\n  _role?: 'status' | 'alert';\n\n  constructor(\n    private _ngZone: NgZone,\n    private _elementRef: ElementRef<HTMLElement>,\n    private _changeDetectorRef: ChangeDetectorRef,\n    private _platform: Platform,\n    /** The snack bar configuration. */\n    public snackBarConfig: MatSnackBarConfig) {\n\n    super();\n\n    // Use aria-live rather than a live role like 'alert' or 'status'\n    // because NVDA and JAWS have show inconsistent behavior with live roles.\n    if (snackBarConfig.politeness === 'assertive' && !snackBarConfig.announcementMessage) {\n      this._live = 'assertive';\n    } else if (snackBarConfig.politeness === 'off') {\n      this._live = 'off';\n    } else {\n      this._live = 'polite';\n    }\n\n    // Only set role for Firefox. Set role based on aria-live because setting role=\"alert\" implies\n    // aria-live=\"assertive\" which may cause issues if aria-live is set to \"polite\" above.\n    if (this._platform.FIREFOX) {\n      if (this._live === 'polite') {\n        this._role = 'status';\n      }\n      if (this._live === 'assertive') {\n        this._role = 'alert';\n      }\n    }\n  }\n\n  /** Attach a component portal as content to this snack bar container. */\n  attachComponentPortal<T>(portal: ComponentPortal<T>): ComponentRef<T> {\n    this._assertNotAttached();\n    this._applySnackBarClasses();\n    return this._portalOutlet.attachComponentPortal(portal);\n  }\n\n  /** Attach a template portal as content to this snack bar container. */\n  attachTemplatePortal<C>(portal: TemplatePortal<C>): EmbeddedViewRef<C> {\n    this._assertNotAttached();\n    this._applySnackBarClasses();\n    return this._portalOutlet.attachTemplatePortal(portal);\n  }\n\n  /**\n   * Attaches a DOM portal to the snack bar container.\n   * @deprecated To be turned into a method.\n   * @breaking-change 10.0.0\n   */\n  attachDomPortal = (portal: DomPortal) => {\n    this._assertNotAttached();\n    this._applySnackBarClasses();\n    return this._portalOutlet.attachDomPortal(portal);\n  }\n\n  /** Handle end of animations, updating the state of the snackbar. */\n  onAnimationEnd(event: AnimationEvent) {\n    const {fromState, toState} = event;\n\n    if ((toState === 'void' && fromState !== 'void') || toState === 'hidden') {\n      this._completeExit();\n    }\n\n    if (toState === 'visible') {\n      // Note: we shouldn't use `this` inside the zone callback,\n      // because it can cause a memory leak.\n      const onEnter = this._onEnter;\n\n      this._ngZone.run(() => {\n        onEnter.next();\n        onEnter.complete();\n      });\n    }\n  }\n\n  /** Begin animation of snack bar entrance into view. */\n  enter(): void {\n    if (!this._destroyed) {\n      this._animationState = 'visible';\n      this._changeDetectorRef.detectChanges();\n      this._screenReaderAnnounce();\n    }\n  }\n\n  /** Begin animation of the snack bar exiting from view. */\n  exit(): Observable<void> {\n    // Note: this one transitions to `hidden`, rather than `void`, in order to handle the case\n    // where multiple snack bars are opened in quick succession (e.g. two consecutive calls to\n    // `MatSnackBar.open`).\n    this._animationState = 'hidden';\n\n    // Mark this element with an 'exit' attribute to indicate that the snackbar has\n    // been dismissed and will soon be removed from the DOM. This is used by the snackbar\n    // test harness.\n    this._elementRef.nativeElement.setAttribute('mat-exit', '');\n\n    // If the snack bar hasn't been announced by the time it exits it wouldn't have been open\n    // long enough to visually read it either, so clear the timeout for announcing.\n    clearTimeout(this._announceTimeoutId);\n\n    return this._onExit;\n  }\n\n  /** Makes sure the exit callbacks have been invoked when the element is destroyed. */\n  ngOnDestroy() {\n    this._destroyed = true;\n    this._completeExit();\n  }\n\n  /**\n   * Waits for the zone to settle before removing the element. Helps prevent\n   * errors where we end up removing an element which is in the middle of an animation.\n   */\n  private _completeExit() {\n    this._ngZone.onMicrotaskEmpty.pipe(take(1)).subscribe(() => {\n      this._onExit.next();\n      this._onExit.complete();\n    });\n  }\n\n  /** Applies the various positioning and user-configured CSS classes to the snack bar. */\n  private _applySnackBarClasses() {\n    const element: HTMLElement = this._elementRef.nativeElement;\n    const panelClasses = this.snackBarConfig.panelClass;\n\n    if (panelClasses) {\n      if (Array.isArray(panelClasses)) {\n        // Note that we can't use a spread here, because IE doesn't support multiple arguments.\n        panelClasses.forEach(cssClass => element.classList.add(cssClass));\n      } else {\n        element.classList.add(panelClasses);\n      }\n    }\n\n    if (this.snackBarConfig.horizontalPosition === 'center') {\n      element.classList.add('mat-snack-bar-center');\n    }\n\n    if (this.snackBarConfig.verticalPosition === 'top') {\n      element.classList.add('mat-snack-bar-top');\n    }\n  }\n\n  /** Asserts that no content is already attached to the container. */\n  private _assertNotAttached() {\n    if (this._portalOutlet.hasAttached() && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n      throw Error('Attempting to attach snack bar content after content is already attached');\n    }\n  }\n\n  /**\n   * Starts a timeout to move the snack bar content to the live region so screen readers will\n   * announce it.\n   */\n  private _screenReaderAnnounce() {\n    if (!this._announceTimeoutId) {\n      this._ngZone.runOutsideAngular(() => {\n        this._announceTimeoutId = setTimeout(() => {\n          const inertElement = this._elementRef.nativeElement.querySelector('[aria-hidden]');\n          const liveElement = this._elementRef.nativeElement.querySelector('[aria-live]');\n\n          if (inertElement && liveElement) {\n            // If an element in the snack bar content is focused before being moved\n            // track it and restore focus after moving to the live region.\n            let focusedElement: HTMLElement | null = null;\n            if (this._platform.isBrowser &&\n                document.activeElement instanceof HTMLElement &&\n                inertElement.contains(document.activeElement)) {\n              focusedElement = document.activeElement;\n            }\n\n            inertElement.removeAttribute('aria-hidden');\n            liveElement.appendChild(inertElement);\n            focusedElement?.focus();\n\n            this._onAnnounce.next();\n            this._onAnnounce.complete();\n          }\n        }, this._announceDelay);\n      });\n    }\n  }\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 {OverlayModule} from '@angular/cdk/overlay';\nimport {PortalModule} from '@angular/cdk/portal';\nimport {CommonModule} from '@angular/common';\nimport {NgModule} from '@angular/core';\nimport {MatCommonModule} from '@angular/material/core';\nimport {MatButtonModule} from '@angular/material/button';\nimport {SimpleSnackBar} from './simple-snack-bar';\nimport {MatSnackBarContainer} from './snack-bar-container';\n\n\n@NgModule({\n  imports: [\n    OverlayModule,\n    PortalModule,\n    CommonModule,\n    MatButtonModule,\n    MatCommonModule,\n  ],\n  exports: [MatSnackBarContainer, MatCommonModule],\n  declarations: [MatSnackBarContainer, SimpleSnackBar],\n  entryComponents: [MatSnackBarContainer, SimpleSnackBar],\n})\nexport class MatSnackBarModule {}\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 {LiveAnnouncer} from '@angular/cdk/a11y';\nimport {BreakpointObserver, Breakpoints} from '@angular/cdk/layout';\nimport {Overlay, OverlayConfig, OverlayRef} from '@angular/cdk/overlay';\nimport {ComponentPortal, ComponentType, TemplatePortal} from '@angular/cdk/portal';\nimport {\n  ComponentRef,\n  EmbeddedViewRef,\n  Inject,\n  Injectable,\n  InjectionToken,\n  Injector,\n  Optional,\n  SkipSelf,\n  TemplateRef,\n  OnDestroy, Type,\n} from '@angular/core';\nimport {takeUntil} from 'rxjs/operators';\nimport {TextOnlySnackBar, SimpleSnackBar} from './simple-snack-bar';\nimport {MAT_SNACK_BAR_DATA, MatSnackBarConfig} from './snack-bar-config';\nimport {MatSnackBarContainer, _SnackBarContainer} from './snack-bar-container';\nimport {MatSnackBarModule} from './snack-bar-module';\nimport {MatSnackBarRef} from './snack-bar-ref';\n\n\n/** Injection token that can be used to specify default snack bar. */\nexport const MAT_SNACK_BAR_DEFAULT_OPTIONS =\n    new InjectionToken<MatSnackBarConfig>('mat-snack-bar-default-options', {\n      providedIn: 'root',\n      factory: MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY,\n    });\n\n/** @docs-private */\nexport function MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY(): MatSnackBarConfig {\n  return new MatSnackBarConfig();\n}\n\n/**\n * Service to dispatch Material Design snack bar messages.\n */\n@Injectable({providedIn: MatSnackBarModule})\nexport class MatSnackBar implements OnDestroy {\n  /**\n   * Reference to the current snack bar in the view *at this level* (in the Angular injector tree).\n   * If there is a parent snack-bar service, all operations should delegate to that parent\n   * via `_openedSnackBarRef`.\n   */\n  private _snackBarRefAtThisLevel: MatSnackBarRef<any> | null = null;\n\n  /** The component that should be rendered as the snack bar's simple component. */\n  protected simpleSnackBarComponent: Type<TextOnlySnackBar> = SimpleSnackBar;\n\n  /** The container component that attaches the provided template or component. */\n  protected snackBarContainerComponent: Type<_SnackBarContainer> = MatSnackBarContainer;\n\n  /** The CSS class to apply for handset mode. */\n  protected handsetCssClass = 'mat-snack-bar-handset';\n\n  /** Reference to the currently opened snackbar at *any* level. */\n  get _openedSnackBarRef(): MatSnackBarRef<any> | null {\n    const parent = this._parentSnackBar;\n    return parent ? parent._openedSnackBarRef : this._snackBarRefAtThisLevel;\n  }\n\n  set _openedSnackBarRef(value: MatSnackBarRef<any> | null) {\n    if (this._parentSnackBar) {\n      this._parentSnackBar._openedSnackBarRef = value;\n    } else {\n      this._snackBarRefAtThisLevel = value;\n    }\n  }\n\n  constructor(\n      private _overlay: Overlay,\n      private _live: LiveAnnouncer,\n      private _injector: Injector,\n      private _breakpointObserver: BreakpointObserver,\n      @Optional() @SkipSelf() private _parentSnackBar: MatSnackBar,\n      @Inject(MAT_SNACK_BAR_DEFAULT_OPTIONS) private _defaultConfig: MatSnackBarConfig) {}\n\n  /**\n   * Creates and dispatches a snack bar with a custom component for the content, removing any\n   * currently opened snack bars.\n   *\n   * @param component Component to be instantiated.\n   * @param config Extra configuration for the snack bar.\n   */\n  openFromComponent<T>(component: ComponentType<T>, config?: MatSnackBarConfig):\n      MatSnackBarRef<T> {\n    return this._attach(component, config) as MatSnackBarRef<T>;\n  }\n\n  /**\n   * Creates and dispatches a snack bar with a custom template for the content, removing any\n   * currently opened snack bars.\n   *\n   * @param template Template to be instantiated.\n   * @param config Extra configuration for the snack bar.\n   */\n  openFromTemplate(template: TemplateRef<any>, config?: MatSnackBarConfig):\n      MatSnackBarRef<EmbeddedViewRef<any>> {\n    return this._attach(template, config);\n  }\n\n  /**\n   * Opens a snackbar with a message and an optional action.\n   * @param message The message to show in the snackbar.\n   * @param action The label for the snackbar action.\n   * @param config Additional configuration options for the snackbar.\n   */\n  open(message: string, action: string = '', config?: MatSnackBarConfig):\n      MatSnackBarRef<TextOnlySnackBar> {\n    const _config = {...this._defaultConfig, ...config};\n\n    // Since the user doesn't have access to the component, we can\n    // override the data to pass in our own message and action.\n    _config.data = {message, action};\n\n    // Since the snack bar has `role=\"alert\"`, we don't\n    // want to announce the same message twice.\n    if (_config.announcementMessage === message) {\n      _config.announcementMessage = undefined;\n    }\n\n    return this.openFromComponent(this.simpleSnackBarComponent, _config);\n  }\n\n  /**\n   * Dismisses the currently-visible snack bar.\n   */\n  dismiss(): void {\n    if (this._openedSnackBarRef) {\n      this._openedSnackBarRef.dismiss();\n    }\n  }\n\n  ngOnDestroy() {\n    // Only dismiss the snack bar at the current level on destroy.\n    if (this._snackBarRefAtThisLevel) {\n      this._snackBarRefAtThisLevel.dismiss();\n    }\n  }\n\n  /**\n   * Attaches the snack bar container component to the overlay.\n   */\n  private _attachSnackBarContainer(overlayRef: OverlayRef,\n                                     config: MatSnackBarConfig): _SnackBarContainer {\n\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n    const injector = Injector.create({\n      parent: userInjector || this._injector,\n      providers: [{provide: MatSnackBarConfig, useValue: config}]\n    });\n\n    const containerPortal =\n        new ComponentPortal(this.snackBarContainerComponent, config.viewContainerRef, injector);\n    const containerRef: ComponentRef<_SnackBarContainer> =\n        overlayRef.attach(containerPortal);\n    containerRef.instance.snackBarConfig = config;\n    return containerRef.instance;\n  }\n\n  /**\n   * Places a new component or a template as the content of the snack bar container.\n   */\n  private _attach<T>(content: ComponentType<T> | TemplateRef<T>, userConfig?: MatSnackBarConfig):\n      MatSnackBarRef<T | EmbeddedViewRef<any>> {\n\n    const config = {...new MatSnackBarConfig(), ...this._defaultConfig, ...userConfig};\n    const overlayRef = this._createOverlay(config);\n    const container = this._attachSnackBarContainer(overlayRef, config);\n    const snackBarRef = new MatSnackBarRef<T | EmbeddedViewRef<any>>(container, overlayRef);\n\n    if (content instanceof TemplateRef) {\n      const portal = new TemplatePortal(content, null!, {\n        $implicit: config.data,\n        snackBarRef\n      } as any);\n\n      snackBarRef.instance = container.attachTemplatePortal(portal);\n    } else {\n      const injector = this._createInjector(config, snackBarRef);\n      const portal = new ComponentPortal(content, undefined, injector);\n      const contentRef = container.attachComponentPortal<T>(portal);\n\n      // We can't pass this via the injector, because the injector is created earlier.\n      snackBarRef.instance = contentRef.instance;\n    }\n\n    // Subscribe to the breakpoint observer and attach the mat-snack-bar-handset class as\n    // appropriate. This class is applied to the overlay element because the overlay must expand to\n    // fill the width of the screen for full width snackbars.\n    this._breakpointObserver.observe(Breakpoints.HandsetPortrait).pipe(\n        takeUntil(overlayRef.detachments())\n    ).subscribe(state => {\n      const classList = overlayRef.overlayElement.classList;\n      state.matches ? classList.add(this.handsetCssClass) : classList.remove(this.handsetCssClass);\n    });\n\n    if (config.announcementMessage) {\n      // Wait until the snack bar contents have been announced then deliver this message.\n      container._onAnnounce.subscribe(() => {\n        this._live.announce(config.announcementMessage!, config.politeness);\n      });\n    }\n\n    this._animateSnackBar(snackBarRef, config);\n    this._openedSnackBarRef = snackBarRef;\n    return this._openedSnackBarRef;\n  }\n\n  /** Animates the old snack bar out and the new one in. */\n  private _animateSnackBar(snackBarRef: MatSnackBarRef<any>, config: MatSnackBarConfig) {\n    // When the snackbar is dismissed, clear the reference to it.\n    snackBarRef.afterDismissed().subscribe(() => {\n      // Clear the snackbar ref if it hasn't already been replaced by a newer snackbar.\n      if (this._openedSnackBarRef == snackBarRef) {\n        this._openedSnackBarRef = null;\n      }\n\n      if (config.announcementMessage) {\n        this._live.clear();\n      }\n    });\n\n    if (this._openedSnackBarRef) {\n      // If a snack bar is already in view, dismiss it and enter the\n      // new snack bar after exit animation is complete.\n      this._openedSnackBarRef.afterDismissed().subscribe(() => {\n        snackBarRef.containerInstance.enter();\n      });\n      this._openedSnackBarRef.dismiss();\n    } else {\n      // If no snack bar is in view, enter the new snack bar.\n      snackBarRef.containerInstance.enter();\n    }\n\n    // If a dismiss timeout is provided, set up dismiss based on after the snackbar is opened.\n    if (config.duration && config.duration > 0) {\n      snackBarRef.afterOpened().subscribe(() => snackBarRef._dismissAfter(config.duration!));\n    }\n  }\n\n  /**\n   * Creates a new overlay and places it in the correct location.\n   * @param config The user-specified snack bar config.\n   */\n  private _createOverlay(config: MatSnackBarConfig): OverlayRef {\n    const overlayConfig = new OverlayConfig();\n    overlayConfig.direction = config.direction;\n\n    let positionStrategy = this._overlay.position().global();\n    // Set horizontal position.\n    const isRtl = config.direction === 'rtl';\n    const isLeft = (\n        config.horizontalPosition === 'left' ||\n        (config.horizontalPosition === 'start' && !isRtl) ||\n        (config.horizontalPosition === 'end' && isRtl));\n    const isRight = !isLeft && config.horizontalPosition !== 'center';\n    if (isLeft) {\n      positionStrategy.left('0');\n    } else if (isRight) {\n      positionStrategy.right('0');\n    } else {\n      positionStrategy.centerHorizontally();\n    }\n    // Set horizontal position.\n    if (config.verticalPosition === 'top') {\n      positionStrategy.top('0');\n    } else {\n      positionStrategy.bottom('0');\n    }\n\n    overlayConfig.positionStrategy = positionStrategy;\n    return this._overlay.create(overlayConfig);\n  }\n\n  /**\n   * Creates an injector to be used inside of a snack bar component.\n   * @param config Config that was used to create the snack bar.\n   * @param snackBarRef Reference to the snack bar.\n   */\n  private _createInjector<T>(config: MatSnackBarConfig, snackBarRef: MatSnackBarRef<T>): Injector {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n\n    return Injector.create({\n      parent: userInjector || this._injector,\n      providers: [\n        {provide: MatSnackBarRef, useValue: snackBarRef},\n        {provide: MAT_SNACK_BAR_DATA, useValue: config.data}\n      ]\n    });\n  }\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 * from './snack-bar-module';\nexport * from './snack-bar';\nexport * from './snack-bar-container';\nexport * from './snack-bar-config';\nexport * from './snack-bar-ref';\nexport * from './simple-snack-bar';\nexport * from './snack-bar-animations';\n","/**\n * Generated bundle index. 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