@angular/material/fesm2015/bottom-sheet.mjs.map

Angular Material

{"version":3,"file":"bottom-sheet.mjs","sources":["../../../../../../src/material/bottom-sheet/bottom-sheet-animations.ts","../../../../../../src/material/bottom-sheet/bottom-sheet-config.ts","../../../../../../src/material/bottom-sheet/bottom-sheet-container.ts","../../../../../../src/material/bottom-sheet/bottom-sheet-container.html","../../../../../../src/material/bottom-sheet/bottom-sheet-module.ts","../../../../../../src/material/bottom-sheet/bottom-sheet-ref.ts","../../../../../../src/material/bottom-sheet/bottom-sheet.ts","../../../../../../src/material/bottom-sheet/public-api.ts","../../../../../../src/material/bottom-sheet/index.ts","../../../../../../src/material/bottom-sheet/bottom-sheet_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 {\n  animate,\n  state,\n  style,\n  transition,\n  trigger,\n  AnimationTriggerMetadata,\n  group,\n  query,\n  animateChild,\n} from '@angular/animations';\nimport {AnimationCurves, AnimationDurations} from '@angular/material/core';\n\n/** Animations used by the Material bottom sheet. */\nexport const matBottomSheetAnimations: {\n  readonly bottomSheetState: AnimationTriggerMetadata;\n} = {\n  /** Animation that shows and hides a bottom sheet. */\n  bottomSheetState: trigger('state', [\n    state('void, hidden', style({transform: 'translateY(100%)'})),\n    state('visible', style({transform: 'translateY(0%)'})),\n    transition(\n      'visible => void, visible => hidden',\n      group([\n        animate(`${AnimationDurations.COMPLEX} ${AnimationCurves.ACCELERATION_CURVE}`),\n        query('@*', animateChild(), {optional: true}),\n      ]),\n    ),\n    transition(\n      'void => visible',\n      group([\n        animate(`${AnimationDurations.EXITING} ${AnimationCurves.DECELERATION_CURVE}`),\n        query('@*', animateChild(), {optional: true}),\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 {Direction} from '@angular/cdk/bidi';\nimport {ScrollStrategy} from '@angular/cdk/overlay';\nimport {InjectionToken, ViewContainerRef} from '@angular/core';\n\n/** Options for where to set focus to automatically on dialog open */\nexport type AutoFocusTarget = 'dialog' | 'first-tabbable' | 'first-heading';\n\n/** Injection token that can be used to access the data that was passed in to a bottom sheet. */\nexport const MAT_BOTTOM_SHEET_DATA = new InjectionToken<any>('MatBottomSheetData');\n\n/**\n * Configuration used when opening a bottom sheet.\n */\nexport class MatBottomSheetConfig<D = any> {\n  /** The view container to place the overlay for the bottom sheet into. */\n  viewContainerRef?: ViewContainerRef;\n\n  /** Extra CSS classes to be added to the bottom sheet container. */\n  panelClass?: string | string[];\n\n  /** Text layout direction for the bottom sheet. */\n  direction?: Direction;\n\n  /** Data being injected into the child component. */\n  data?: D | null = null;\n\n  /** Whether the bottom sheet has a backdrop. */\n  hasBackdrop?: boolean = true;\n\n  /** Custom class for the backdrop. */\n  backdropClass?: string;\n\n  /** Whether the user can use escape or clicking outside to close the bottom sheet. */\n  disableClose?: boolean = false;\n\n  /** Aria label to assign to the bottom sheet element. */\n  ariaLabel?: string | null = null;\n\n  /**\n   * Whether the bottom sheet should close when the user goes backwards/forwards in history.\n   * Note that this usually doesn't include clicking on links (unless the user is using\n   * the `HashLocationStrategy`).\n   */\n  closeOnNavigation?: boolean = true;\n\n  // Note that this is set to 'dialog' by default, because while the a11y recommendations\n  // are to focus the first focusable element, doing so prevents screen readers from reading out the\n  // rest of the bottom sheet content.\n  /**\n   * Where the bottom sheet should focus on open.\n   * @breaking-change 14.0.0 Remove boolean option from autoFocus. Use string or\n   * AutoFocusTarget instead.\n   */\n  autoFocus?: AutoFocusTarget | string | boolean = 'dialog';\n\n  /**\n   * Whether the bottom sheet should restore focus to the\n   * previously-focused element, after it's closed.\n   */\n  restoreFocus?: boolean = true;\n\n  /** Scroll strategy to be used for the bottom sheet. */\n  scrollStrategy?: ScrollStrategy;\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 {FocusTrap, FocusTrapFactory, InteractivityChecker} from '@angular/cdk/a11y';\nimport {coerceArray} from '@angular/cdk/coercion';\nimport {BreakpointObserver, Breakpoints} from '@angular/cdk/layout';\nimport {_getFocusedElementPierceShadowDom} from '@angular/cdk/platform';\nimport {\n  BasePortalOutlet,\n  CdkPortalOutlet,\n  ComponentPortal,\n  DomPortal,\n  TemplatePortal,\n} from '@angular/cdk/portal';\nimport {DOCUMENT} from '@angular/common';\nimport {\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ComponentRef,\n  ElementRef,\n  EmbeddedViewRef,\n  EventEmitter,\n  Inject,\n  NgZone,\n  OnDestroy,\n  Optional,\n  ViewChild,\n  ViewEncapsulation,\n} from '@angular/core';\nimport {Subscription} from 'rxjs';\nimport {matBottomSheetAnimations} from './bottom-sheet-animations';\nimport {MatBottomSheetConfig} from './bottom-sheet-config';\n\n// TODO(crisbeto): consolidate some logic between this, MatDialog and MatSnackBar\n\n/**\n * Internal component that wraps user-provided bottom sheet content.\n * @docs-private\n */\n@Component({\n  selector: 'mat-bottom-sheet-container',\n  templateUrl: 'bottom-sheet-container.html',\n  styleUrls: ['bottom-sheet-container.css'],\n  // In Ivy embedded views will be change detected from their declaration place, rather than where\n  // they were stamped out. This means that we can't have the bottom sheet container be OnPush,\n  // because it might cause the sheets 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: [matBottomSheetAnimations.bottomSheetState],\n  host: {\n    'class': 'mat-bottom-sheet-container',\n    'tabindex': '-1',\n    'role': 'dialog',\n    'aria-modal': 'true',\n    '[attr.aria-label]': 'bottomSheetConfig?.ariaLabel',\n    '[@state]': '_animationState',\n    '(@state.start)': '_onAnimationStart($event)',\n    '(@state.done)': '_onAnimationDone($event)',\n  },\n})\nexport class MatBottomSheetContainer extends BasePortalOutlet implements OnDestroy {\n  private _breakpointSubscription: Subscription;\n\n  /** The portal outlet inside of this container into which the content will be loaded. */\n  @ViewChild(CdkPortalOutlet, {static: true}) _portalOutlet: CdkPortalOutlet;\n\n  /** The state of the bottom sheet animations. */\n  _animationState: 'void' | 'visible' | 'hidden' = 'void';\n\n  /** Emits whenever the state of the animation changes. */\n  _animationStateChanged = new EventEmitter<AnimationEvent>();\n\n  /** The class that traps and manages focus within the bottom sheet. */\n  private _focusTrap: FocusTrap;\n\n  /** Element that was focused before the bottom sheet was opened. */\n  private _elementFocusedBeforeOpened: HTMLElement | null = null;\n\n  /** Server-side rendering-compatible reference to the global document object. */\n  private _document: Document;\n\n  /** Whether the component has been destroyed. */\n  private _destroyed: boolean;\n\n  constructor(\n    private _elementRef: ElementRef<HTMLElement>,\n    private _changeDetectorRef: ChangeDetectorRef,\n    private _focusTrapFactory: FocusTrapFactory,\n    private readonly _interactivityChecker: InteractivityChecker,\n    private readonly _ngZone: NgZone,\n    breakpointObserver: BreakpointObserver,\n    @Optional() @Inject(DOCUMENT) document: any,\n    /** The bottom sheet configuration. */\n    public bottomSheetConfig: MatBottomSheetConfig,\n  ) {\n    super();\n\n    this._document = document;\n    this._breakpointSubscription = breakpointObserver\n      .observe([Breakpoints.Medium, Breakpoints.Large, Breakpoints.XLarge])\n      .subscribe(() => {\n        this._toggleClass(\n          'mat-bottom-sheet-container-medium',\n          breakpointObserver.isMatched(Breakpoints.Medium),\n        );\n        this._toggleClass(\n          'mat-bottom-sheet-container-large',\n          breakpointObserver.isMatched(Breakpoints.Large),\n        );\n        this._toggleClass(\n          'mat-bottom-sheet-container-xlarge',\n          breakpointObserver.isMatched(Breakpoints.XLarge),\n        );\n      });\n  }\n\n  /** Attach a component portal as content to this bottom sheet container. */\n  attachComponentPortal<T>(portal: ComponentPortal<T>): ComponentRef<T> {\n    this._validatePortalAttached();\n    this._setPanelClass();\n    this._savePreviouslyFocusedElement();\n    return this._portalOutlet.attachComponentPortal(portal);\n  }\n\n  /** Attach a template portal as content to this bottom sheet container. */\n  attachTemplatePortal<C>(portal: TemplatePortal<C>): EmbeddedViewRef<C> {\n    this._validatePortalAttached();\n    this._setPanelClass();\n    this._savePreviouslyFocusedElement();\n    return this._portalOutlet.attachTemplatePortal(portal);\n  }\n\n  /**\n   * Attaches a DOM portal to the bottom sheet container.\n   * @deprecated To be turned into a method.\n   * @breaking-change 10.0.0\n   */\n  override attachDomPortal = (portal: DomPortal) => {\n    this._validatePortalAttached();\n    this._setPanelClass();\n    this._savePreviouslyFocusedElement();\n    return this._portalOutlet.attachDomPortal(portal);\n  };\n\n  /** Begin animation of bottom sheet entrance into view. */\n  enter(): void {\n    if (!this._destroyed) {\n      this._animationState = 'visible';\n      this._changeDetectorRef.detectChanges();\n    }\n  }\n\n  /** Begin animation of the bottom sheet exiting from view. */\n  exit(): void {\n    if (!this._destroyed) {\n      this._animationState = 'hidden';\n      this._changeDetectorRef.markForCheck();\n    }\n  }\n\n  ngOnDestroy() {\n    this._breakpointSubscription.unsubscribe();\n    this._destroyed = true;\n  }\n\n  _onAnimationDone(event: AnimationEvent) {\n    if (event.toState === 'hidden') {\n      this._restoreFocus();\n    } else if (event.toState === 'visible') {\n      this._trapFocus();\n    }\n\n    this._animationStateChanged.emit(event);\n  }\n\n  _onAnimationStart(event: AnimationEvent) {\n    this._animationStateChanged.emit(event);\n  }\n\n  private _toggleClass(cssClass: string, add: boolean) {\n    this._elementRef.nativeElement.classList.toggle(cssClass, add);\n  }\n\n  private _validatePortalAttached() {\n    if (this._portalOutlet.hasAttached() && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n      throw Error('Attempting to attach bottom sheet content after content is already attached');\n    }\n  }\n\n  private _setPanelClass() {\n    const element: HTMLElement = this._elementRef.nativeElement;\n    element.classList.add(...coerceArray(this.bottomSheetConfig.panelClass || []));\n  }\n\n  /**\n   * Focuses the provided element. If the element is not focusable, it will add a tabIndex\n   * attribute to forcefully focus it. The attribute is removed after focus is moved.\n   * @param element The element to focus.\n   */\n  private _forceFocus(element: HTMLElement, options?: FocusOptions) {\n    if (!this._interactivityChecker.isFocusable(element)) {\n      element.tabIndex = -1;\n      // The tabindex attribute should be removed to avoid navigating to that element again\n      this._ngZone.runOutsideAngular(() => {\n        const callback = () => {\n          element.removeEventListener('blur', callback);\n          element.removeEventListener('mousedown', callback);\n          element.removeAttribute('tabindex');\n        };\n\n        element.addEventListener('blur', callback);\n        element.addEventListener('mousedown', callback);\n      });\n    }\n    element.focus(options);\n  }\n\n  /**\n   * Focuses the first element that matches the given selector within the focus trap.\n   * @param selector The CSS selector for the element to set focus to.\n   */\n  private _focusByCssSelector(selector: string, options?: FocusOptions) {\n    let elementToFocus = this._elementRef.nativeElement.querySelector(\n      selector,\n    ) as HTMLElement | null;\n    if (elementToFocus) {\n      this._forceFocus(elementToFocus, options);\n    }\n  }\n\n  /**\n   * Moves the focus inside the focus trap. When autoFocus is not set to 'bottom-sheet',\n   * if focus cannot be moved then focus will go to the bottom sheet container.\n   */\n  private _trapFocus() {\n    const element = this._elementRef.nativeElement;\n\n    if (!this._focusTrap) {\n      this._focusTrap = this._focusTrapFactory.create(element);\n    }\n\n    // If were to attempt to focus immediately, then the content of the bottom sheet would not\n    // yet be ready in instances where change detection has to run first. To deal with this,\n    // we simply wait for the microtask queue to be empty when setting focus when autoFocus\n    // isn't set to bottom sheet. If the element inside the bottom sheet can't be focused,\n    // then the container is focused so the user can't tab into other elements behind it.\n    switch (this.bottomSheetConfig.autoFocus) {\n      case false:\n      case 'dialog':\n        const activeElement = _getFocusedElementPierceShadowDom();\n        // Ensure that focus is on the bottom sheet container. It's possible that a different\n        // component tried to move focus while the open animation was running. See:\n        // https://github.com/angular/components/issues/16215. Note that we only want to do this\n        // if the focus isn't inside the bottom sheet already, because it's possible that the\n        // consumer specified `autoFocus` in order to move focus themselves.\n        if (activeElement !== element && !element.contains(activeElement)) {\n          element.focus();\n        }\n        break;\n      case true:\n      case 'first-tabbable':\n        this._focusTrap.focusInitialElementWhenReady();\n        break;\n      case 'first-heading':\n        this._focusByCssSelector('h1, h2, h3, h4, h5, h6, [role=\"heading\"]');\n        break;\n      default:\n        this._focusByCssSelector(this.bottomSheetConfig.autoFocus!);\n        break;\n    }\n  }\n\n  /** Restores focus to the element that was focused before the bottom sheet was opened. */\n  private _restoreFocus() {\n    const toFocus = this._elementFocusedBeforeOpened;\n\n    // We need the extra check, because IE can set the `activeElement` to null in some cases.\n    if (this.bottomSheetConfig.restoreFocus && toFocus && typeof toFocus.focus === 'function') {\n      const activeElement = _getFocusedElementPierceShadowDom();\n      const element = this._elementRef.nativeElement;\n\n      // Make sure that focus is still inside the bottom sheet or is on the body (usually because a\n      // non-focusable element like the backdrop was clicked) before moving it. It's possible that\n      // the consumer moved it themselves before the animation was done, in which case we shouldn't\n      // do anything.\n      if (\n        !activeElement ||\n        activeElement === this._document.body ||\n        activeElement === element ||\n        element.contains(activeElement)\n      ) {\n        toFocus.focus();\n      }\n    }\n\n    if (this._focusTrap) {\n      this._focusTrap.destroy();\n    }\n  }\n\n  /** Saves a reference to the element that was focused before the bottom sheet was opened. */\n  private _savePreviouslyFocusedElement() {\n    this._elementFocusedBeforeOpened = _getFocusedElementPierceShadowDom();\n\n    // The `focus` method isn't available during server-side rendering.\n    if (this._elementRef.nativeElement.focus) {\n      this._ngZone.runOutsideAngular(() => {\n        Promise.resolve().then(() => this._elementRef.nativeElement.focus());\n      });\n    }\n  }\n}\n","<ng-template cdkPortalOutlet></ng-template>\r\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 {NgModule} from '@angular/core';\nimport {MatCommonModule} from '@angular/material/core';\nimport {MatBottomSheetContainer} from './bottom-sheet-container';\n\n@NgModule({\n  imports: [OverlayModule, MatCommonModule, PortalModule],\n  exports: [MatBottomSheetContainer, MatCommonModule],\n  declarations: [MatBottomSheetContainer],\n})\nexport class MatBottomSheetModule {}\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 {ESCAPE, hasModifierKey} from '@angular/cdk/keycodes';\nimport {OverlayRef} from '@angular/cdk/overlay';\nimport {merge, Observable, Subject} from 'rxjs';\nimport {filter, take} from 'rxjs/operators';\nimport {MatBottomSheetContainer} from './bottom-sheet-container';\n\n/**\n * Reference to a bottom sheet dispatched from the bottom sheet service.\n */\nexport class MatBottomSheetRef<T = any, R = any> {\n  /** Instance of the component making up the content of the bottom sheet. */\n  instance: T;\n\n  /**\n   * Instance of the component into which the bottom sheet content is projected.\n   * @docs-private\n   */\n  containerInstance: MatBottomSheetContainer;\n\n  /** Whether the user is allowed to close the bottom sheet. */\n  disableClose: boolean | undefined;\n\n  /** Subject for notifying the user that the bottom sheet has been dismissed. */\n  private readonly _afterDismissed = new Subject<R | undefined>();\n\n  /** Subject for notifying the user that the bottom sheet has opened and appeared. */\n  private readonly _afterOpened = new Subject<void>();\n\n  /** Result to be passed down to the `afterDismissed` stream. */\n  private _result: R | undefined;\n\n  /** Handle to the timeout that's running as a fallback in case the exit animation doesn't fire. */\n  private _closeFallbackTimeout: number;\n\n  constructor(containerInstance: MatBottomSheetContainer, private _overlayRef: OverlayRef) {\n    this.containerInstance = containerInstance;\n    this.disableClose = containerInstance.bottomSheetConfig.disableClose;\n\n    // Emit when opening animation completes\n    containerInstance._animationStateChanged\n      .pipe(\n        filter(event => event.phaseName === 'done' && event.toState === 'visible'),\n        take(1),\n      )\n      .subscribe(() => {\n        this._afterOpened.next();\n        this._afterOpened.complete();\n      });\n\n    // Dispose overlay when closing animation is complete\n    containerInstance._animationStateChanged\n      .pipe(\n        filter(event => event.phaseName === 'done' && event.toState === 'hidden'),\n        take(1),\n      )\n      .subscribe(() => {\n        clearTimeout(this._closeFallbackTimeout);\n        _overlayRef.dispose();\n      });\n\n    _overlayRef\n      .detachments()\n      .pipe(take(1))\n      .subscribe(() => {\n        this._afterDismissed.next(this._result);\n        this._afterDismissed.complete();\n      });\n\n    merge(\n      _overlayRef.backdropClick(),\n      _overlayRef.keydownEvents().pipe(filter(event => event.keyCode === ESCAPE)),\n    ).subscribe(event => {\n      if (\n        !this.disableClose &&\n        (event.type !== 'keydown' || !hasModifierKey(event as KeyboardEvent))\n      ) {\n        event.preventDefault();\n        this.dismiss();\n      }\n    });\n  }\n\n  /**\n   * Dismisses the bottom sheet.\n   * @param result Data to be passed back to the bottom sheet opener.\n   */\n  dismiss(result?: R): void {\n    if (!this._afterDismissed.closed) {\n      // Transition the backdrop in parallel to the bottom sheet.\n      this.containerInstance._animationStateChanged\n        .pipe(\n          filter(event => event.phaseName === 'start'),\n          take(1),\n        )\n        .subscribe(event => {\n          // The logic that disposes of the overlay depends on the exit animation completing, however\n          // it isn't guaranteed if the parent view is destroyed while it's running. Add a fallback\n          // timeout which will clean everything up if the animation hasn't fired within the specified\n          // amount of time plus 100ms. We don't need to run this outside the NgZone, because for the\n          // vast majority of cases the timeout will have been cleared before it has fired.\n          this._closeFallbackTimeout = setTimeout(() => {\n            this._overlayRef.dispose();\n          }, event.totalTime + 100);\n\n          this._overlayRef.detachBackdrop();\n        });\n\n      this._result = result;\n      this.containerInstance.exit();\n    }\n  }\n\n  /** Gets an observable that is notified when the bottom sheet is finished closing. */\n  afterDismissed(): Observable<R | undefined> {\n    return this._afterDismissed;\n  }\n\n  /** Gets an observable that is notified when the bottom sheet has opened and appeared. */\n  afterOpened(): Observable<void> {\n    return this._afterOpened;\n  }\n\n  /**\n   * Gets an observable that emits when the overlay's backdrop has been clicked.\n   */\n  backdropClick(): Observable<MouseEvent> {\n    return this._overlayRef.backdropClick();\n  }\n\n  /**\n   * Gets an observable that emits when keydown events are targeted on the overlay.\n   */\n  keydownEvents(): Observable<KeyboardEvent> {\n    return this._overlayRef.keydownEvents();\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 {Directionality} from '@angular/cdk/bidi';\nimport {Overlay, OverlayConfig, OverlayRef} from '@angular/cdk/overlay';\nimport {ComponentPortal, ComponentType, TemplatePortal} from '@angular/cdk/portal';\nimport {\n  ComponentRef,\n  Injectable,\n  Injector,\n  Optional,\n  SkipSelf,\n  TemplateRef,\n  InjectionToken,\n  Inject,\n  OnDestroy,\n  StaticProvider,\n  InjectFlags,\n} from '@angular/core';\nimport {of as observableOf} from 'rxjs';\nimport {MAT_BOTTOM_SHEET_DATA, MatBottomSheetConfig} from './bottom-sheet-config';\nimport {MatBottomSheetContainer} from './bottom-sheet-container';\nimport {MatBottomSheetModule} from './bottom-sheet-module';\nimport {MatBottomSheetRef} from './bottom-sheet-ref';\n\n/** Injection token that can be used to specify default bottom sheet options. */\nexport const MAT_BOTTOM_SHEET_DEFAULT_OPTIONS = new InjectionToken<MatBottomSheetConfig>(\n  'mat-bottom-sheet-default-options',\n);\n\n/**\n * Service to trigger Material Design bottom sheets.\n */\n@Injectable({providedIn: MatBottomSheetModule})\nexport class MatBottomSheet implements OnDestroy {\n  private _bottomSheetRefAtThisLevel: MatBottomSheetRef<any> | null = null;\n\n  /** Reference to the currently opened bottom sheet. */\n  get _openedBottomSheetRef(): MatBottomSheetRef<any> | null {\n    const parent = this._parentBottomSheet;\n    return parent ? parent._openedBottomSheetRef : this._bottomSheetRefAtThisLevel;\n  }\n\n  set _openedBottomSheetRef(value: MatBottomSheetRef<any> | null) {\n    if (this._parentBottomSheet) {\n      this._parentBottomSheet._openedBottomSheetRef = value;\n    } else {\n      this._bottomSheetRefAtThisLevel = value;\n    }\n  }\n\n  constructor(\n    private _overlay: Overlay,\n    private _injector: Injector,\n    @Optional() @SkipSelf() private _parentBottomSheet: MatBottomSheet,\n    @Optional()\n    @Inject(MAT_BOTTOM_SHEET_DEFAULT_OPTIONS)\n    private _defaultOptions?: MatBottomSheetConfig,\n  ) {}\n\n  /**\n   * Opens a bottom sheet containing the given component.\n   * @param component Type of the component to load into the bottom sheet.\n   * @param config Extra configuration options.\n   * @returns Reference to the newly-opened bottom sheet.\n   */\n  open<T, D = any, R = any>(\n    component: ComponentType<T>,\n    config?: MatBottomSheetConfig<D>,\n  ): MatBottomSheetRef<T, R>;\n\n  /**\n   * Opens a bottom sheet containing the given template.\n   * @param template TemplateRef to instantiate as the bottom sheet content.\n   * @param config Extra configuration options.\n   * @returns Reference to the newly-opened bottom sheet.\n   */\n  open<T, D = any, R = any>(\n    template: TemplateRef<T>,\n    config?: MatBottomSheetConfig<D>,\n  ): MatBottomSheetRef<T, R>;\n\n  open<T, D = any, R = any>(\n    componentOrTemplateRef: ComponentType<T> | TemplateRef<T>,\n    config?: MatBottomSheetConfig<D>,\n  ): MatBottomSheetRef<T, R> {\n    const _config = _applyConfigDefaults(\n      this._defaultOptions || new MatBottomSheetConfig(),\n      config,\n    );\n    const overlayRef = this._createOverlay(_config);\n    const container = this._attachContainer(overlayRef, _config);\n    const ref = new MatBottomSheetRef<T, R>(container, overlayRef);\n\n    if (componentOrTemplateRef instanceof TemplateRef) {\n      container.attachTemplatePortal(\n        new TemplatePortal<T>(componentOrTemplateRef, null!, {\n          $implicit: _config.data,\n          bottomSheetRef: ref,\n        } as any),\n      );\n    } else {\n      const portal = new ComponentPortal(\n        componentOrTemplateRef,\n        undefined,\n        this._createInjector(_config, ref),\n      );\n      const contentRef = container.attachComponentPortal(portal);\n      ref.instance = contentRef.instance;\n    }\n\n    // When the bottom sheet is dismissed, clear the reference to it.\n    ref.afterDismissed().subscribe(() => {\n      // Clear the bottom sheet ref if it hasn't already been replaced by a newer one.\n      if (this._openedBottomSheetRef == ref) {\n        this._openedBottomSheetRef = null;\n      }\n    });\n\n    if (this._openedBottomSheetRef) {\n      // If a bottom sheet is already in view, dismiss it and enter the\n      // new bottom sheet after exit animation is complete.\n      this._openedBottomSheetRef.afterDismissed().subscribe(() => ref.containerInstance.enter());\n      this._openedBottomSheetRef.dismiss();\n    } else {\n      // If no bottom sheet is in view, enter the new bottom sheet.\n      ref.containerInstance.enter();\n    }\n\n    this._openedBottomSheetRef = ref;\n\n    return ref;\n  }\n\n  /**\n   * Dismisses the currently-visible bottom sheet.\n   * @param result Data to pass to the bottom sheet instance.\n   */\n  dismiss<R = any>(result?: R): void {\n    if (this._openedBottomSheetRef) {\n      this._openedBottomSheetRef.dismiss(result);\n    }\n  }\n\n  ngOnDestroy() {\n    if (this._bottomSheetRefAtThisLevel) {\n      this._bottomSheetRefAtThisLevel.dismiss();\n    }\n  }\n\n  /**\n   * Attaches the bottom sheet container component to the overlay.\n   */\n  private _attachContainer(\n    overlayRef: OverlayRef,\n    config: MatBottomSheetConfig,\n  ): MatBottomSheetContainer {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n    const injector = Injector.create({\n      parent: userInjector || this._injector,\n      providers: [{provide: MatBottomSheetConfig, useValue: config}],\n    });\n\n    const containerPortal = new ComponentPortal(\n      MatBottomSheetContainer,\n      config.viewContainerRef,\n      injector,\n    );\n    const containerRef: ComponentRef<MatBottomSheetContainer> = overlayRef.attach(containerPortal);\n    return containerRef.instance;\n  }\n\n  /**\n   * Creates a new overlay and places it in the correct location.\n   * @param config The user-specified bottom sheet config.\n   */\n  private _createOverlay(config: MatBottomSheetConfig): OverlayRef {\n    const overlayConfig = new OverlayConfig({\n      direction: config.direction,\n      hasBackdrop: config.hasBackdrop,\n      disposeOnNavigation: config.closeOnNavigation,\n      maxWidth: '100%',\n      scrollStrategy: config.scrollStrategy || this._overlay.scrollStrategies.block(),\n      positionStrategy: this._overlay.position().global().centerHorizontally().bottom('0'),\n    });\n\n    if (config.backdropClass) {\n      overlayConfig.backdropClass = config.backdropClass;\n    }\n\n    return this._overlay.create(overlayConfig);\n  }\n\n  /**\n   * Creates an injector to be used inside of a bottom sheet component.\n   * @param config Config that was used to create the bottom sheet.\n   * @param bottomSheetRef Reference to the bottom sheet.\n   */\n  private _createInjector<T>(\n    config: MatBottomSheetConfig,\n    bottomSheetRef: MatBottomSheetRef<T>,\n  ): Injector {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n    const providers: StaticProvider[] = [\n      {provide: MatBottomSheetRef, useValue: bottomSheetRef},\n      {provide: MAT_BOTTOM_SHEET_DATA, useValue: config.data},\n    ];\n\n    if (\n      config.direction &&\n      (!userInjector ||\n        !userInjector.get<Directionality | null>(Directionality, null, InjectFlags.Optional))\n    ) {\n      providers.push({\n        provide: Directionality,\n        useValue: {value: config.direction, change: observableOf()},\n      });\n    }\n\n    return Injector.create({parent: userInjector || this._injector, providers});\n  }\n}\n\n/**\n * Applies default options to the bottom sheet config.\n * @param defaults Object containing the default values to which to fall back.\n * @param config The configuration to which the defaults will be applied.\n * @returns The new configuration object with defaults applied.\n */\nfunction _applyConfigDefaults(\n  defaults: MatBottomSheetConfig,\n  config?: MatBottomSheetConfig,\n): MatBottomSheetConfig {\n  return {...defaults, ...config};\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 './bottom-sheet-module';\nexport * from './bottom-sheet';\nexport * from './bottom-sheet-config';\nexport * from './bottom-sheet-container';\nexport * from './bottom-sheet-animations';\nexport * from './bottom-sheet-ref';\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 './public-api';\n","/**\n * Generated bundle index. 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