/** * @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 { Directionality } from '@angular/cdk/bidi'; import { Overlay, OverlayConfig, OverlayContainer, } from '@angular/cdk/overlay'; import { ComponentPortal, TemplatePortal } from '@angular/cdk/portal'; import { Location } from '@angular/common'; import { Directive, Inject, Injectable, InjectFlags, InjectionToken, Injector, Optional, SkipSelf, TemplateRef, Type, } from '@angular/core'; import { defer, of as observableOf, Subject } from 'rxjs'; import { startWith } from 'rxjs/operators'; import { MatDialogConfig } from './dialog-config'; import { MatDialogContainer } from './dialog-container'; import { MatDialogRef } from './dialog-ref'; /** Injection token that can be used to access the data that was passed in to a dialog. */ export const MAT_DIALOG_DATA = new InjectionToken('MatDialogData'); /** Injection token that can be used to specify default dialog options. */ export const MAT_DIALOG_DEFAULT_OPTIONS = new InjectionToken('mat-dialog-default-options'); /** Injection token that determines the scroll handling while the dialog is open. */ export const MAT_DIALOG_SCROLL_STRATEGY = new InjectionToken('mat-dialog-scroll-strategy'); /** @docs-private */ export function MAT_DIALOG_SCROLL_STRATEGY_FACTORY(overlay) { return () => overlay.scrollStrategies.block(); } /** @docs-private */ export function MAT_DIALOG_SCROLL_STRATEGY_PROVIDER_FACTORY(overlay) { return () => overlay.scrollStrategies.block(); } /** @docs-private */ export const MAT_DIALOG_SCROLL_STRATEGY_PROVIDER = { provide: MAT_DIALOG_SCROLL_STRATEGY, deps: [Overlay], useFactory: MAT_DIALOG_SCROLL_STRATEGY_PROVIDER_FACTORY, }; /** * Base class for dialog services. The base dialog service allows * for arbitrary dialog refs and dialog container components. */ export class _MatDialogBase { constructor(_overlay, _injector, _defaultOptions, _parentDialog, _overlayContainer, scrollStrategy, _dialogRefConstructor, _dialogContainerType, _dialogDataToken) { this._overlay = _overlay; this._injector = _injector; this._defaultOptions = _defaultOptions; this._parentDialog = _parentDialog; this._overlayContainer = _overlayContainer; this._dialogRefConstructor = _dialogRefConstructor; this._dialogContainerType = _dialogContainerType; this._dialogDataToken = _dialogDataToken; this._openDialogsAtThisLevel = []; this._afterAllClosedAtThisLevel = new Subject(); this._afterOpenedAtThisLevel = new Subject(); this._ariaHiddenElements = new Map(); // TODO (jelbourn): tighten the typing right-hand side of this expression. /** * Stream that emits when all open dialog have finished closing. * Will emit on subscribe if there are no open dialogs to begin with. */ this.afterAllClosed = defer(() => this.openDialogs.length ? this._getAfterAllClosed() : this._getAfterAllClosed().pipe(startWith(undefined))); this._scrollStrategy = scrollStrategy; } /** Keeps track of the currently-open dialogs. */ get openDialogs() { return this._parentDialog ? this._parentDialog.openDialogs : this._openDialogsAtThisLevel; } /** Stream that emits when a dialog has been opened. */ get afterOpened() { return this._parentDialog ? this._parentDialog.afterOpened : this._afterOpenedAtThisLevel; } _getAfterAllClosed() { const parent = this._parentDialog; return parent ? parent._getAfterAllClosed() : this._afterAllClosedAtThisLevel; } open(componentOrTemplateRef, config) { config = _applyConfigDefaults(config, this._defaultOptions || new MatDialogConfig()); if (config.id && this.getDialogById(config.id) && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw Error(`Dialog with id "${config.id}" exists already. The dialog id must be unique.`); } const overlayRef = this._createOverlay(config); const dialogContainer = this._attachDialogContainer(overlayRef, config); const dialogRef = this._attachDialogContent(componentOrTemplateRef, dialogContainer, overlayRef, config); // If this is the first dialog that we're opening, hide all the non-overlay content. if (!this.openDialogs.length) { this._hideNonDialogContentFromAssistiveTechnology(); } this.openDialogs.push(dialogRef); dialogRef.afterClosed().subscribe(() => this._removeOpenDialog(dialogRef)); this.afterOpened.next(dialogRef); // Notify the dialog container that the content has been attached. dialogContainer._initializeWithAttachedContent(); return dialogRef; } /** * Closes all of the currently-open dialogs. */ closeAll() { this._closeDialogs(this.openDialogs); } /** * Finds an open dialog by its id. * @param id ID to use when looking up the dialog. */ getDialogById(id) { return this.openDialogs.find(dialog => dialog.id === id); } ngOnDestroy() { // Only close the dialogs at this level on destroy // since the parent service may still be active. this._closeDialogs(this._openDialogsAtThisLevel); this._afterAllClosedAtThisLevel.complete(); this._afterOpenedAtThisLevel.complete(); } /** * Creates the overlay into which the dialog will be loaded. * @param config The dialog configuration. * @returns A promise resolving to the OverlayRef for the created overlay. */ _createOverlay(config) { const overlayConfig = this._getOverlayConfig(config); return this._overlay.create(overlayConfig); } /** * Creates an overlay config from a dialog config. * @param dialogConfig The dialog configuration. * @returns The overlay configuration. */ _getOverlayConfig(dialogConfig) { const state = new OverlayConfig({ positionStrategy: this._overlay.position().global(), scrollStrategy: dialogConfig.scrollStrategy || this._scrollStrategy(), panelClass: dialogConfig.panelClass, hasBackdrop: dialogConfig.hasBackdrop, direction: dialogConfig.direction, minWidth: dialogConfig.minWidth, minHeight: dialogConfig.minHeight, maxWidth: dialogConfig.maxWidth, maxHeight: dialogConfig.maxHeight, disposeOnNavigation: dialogConfig.closeOnNavigation }); if (dialogConfig.backdropClass) { state.backdropClass = dialogConfig.backdropClass; } return state; } /** * Attaches a dialog container to a dialog's already-created overlay. * @param overlay Reference to the dialog's underlying overlay. * @param config The dialog configuration. * @returns A promise resolving to a ComponentRef for the attached container. */ _attachDialogContainer(overlay, config) { const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector; const injector = Injector.create({ parent: userInjector || this._injector, providers: [{ provide: MatDialogConfig, useValue: config }] }); const containerPortal = new ComponentPortal(this._dialogContainerType, config.viewContainerRef, injector, config.componentFactoryResolver); const containerRef = overlay.attach(containerPortal); return containerRef.instance; } /** * Attaches the user-provided component to the already-created dialog container. * @param componentOrTemplateRef The type of component being loaded into the dialog, * or a TemplateRef to instantiate as the content. * @param dialogContainer Reference to the wrapping dialog container. * @param overlayRef Reference to the overlay in which the dialog resides. * @param config The dialog configuration. * @returns A promise resolving to the MatDialogRef that should be returned to the user. */ _attachDialogContent(componentOrTemplateRef, dialogContainer, overlayRef, config) { // Create a reference to the dialog we're creating in order to give the user a handle // to modify and close it. const dialogRef = new this._dialogRefConstructor(overlayRef, dialogContainer, config.id); if (componentOrTemplateRef instanceof TemplateRef) { dialogContainer.attachTemplatePortal(new TemplatePortal(componentOrTemplateRef, null, { $implicit: config.data, dialogRef })); } else { const injector = this._createInjector(config, dialogRef, dialogContainer); const contentRef = dialogContainer.attachComponentPortal(new ComponentPortal(componentOrTemplateRef, config.viewContainerRef, injector)); dialogRef.componentInstance = contentRef.instance; } dialogRef .updateSize(config.width, config.height) .updatePosition(config.position); return dialogRef; } /** * Creates a custom injector to be used inside the dialog. This allows a component loaded inside * of a dialog to close itself and, optionally, to return a value. * @param config Config object that is used to construct the dialog. * @param dialogRef Reference to the dialog. * @param dialogContainer Dialog container element that wraps all of the contents. * @returns The custom injector that can be used inside the dialog. */ _createInjector(config, dialogRef, dialogContainer) { const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector; // The dialog container should be provided as the dialog container and the dialog's // content are created out of the same `ViewContainerRef` and as such, are siblings // for injector purposes. To allow the hierarchy that is expected, the dialog // container is explicitly provided in the injector. const providers = [ { provide: this._dialogContainerType, useValue: dialogContainer }, { provide: this._dialogDataToken, useValue: config.data }, { provide: this._dialogRefConstructor, useValue: dialogRef } ]; if (config.direction && (!userInjector || !userInjector.get(Directionality, null, InjectFlags.Optional))) { providers.push({ provide: Directionality, useValue: { value: config.direction, change: observableOf() } }); } return Injector.create({ parent: userInjector || this._injector, providers }); } /** * Removes a dialog from the array of open dialogs. * @param dialogRef Dialog to be removed. */ _removeOpenDialog(dialogRef) { const index = this.openDialogs.indexOf(dialogRef); if (index > -1) { this.openDialogs.splice(index, 1); // If all the dialogs were closed, remove/restore the `aria-hidden` // to a the siblings and emit to the `afterAllClosed` stream. if (!this.openDialogs.length) { this._ariaHiddenElements.forEach((previousValue, element) => { if (previousValue) { element.setAttribute('aria-hidden', previousValue); } else { element.removeAttribute('aria-hidden'); } }); this._ariaHiddenElements.clear(); this._getAfterAllClosed().next(); } } } /** * Hides all of the content that isn't an overlay from assistive technology. */ _hideNonDialogContentFromAssistiveTechnology() { const overlayContainer = this._overlayContainer.getContainerElement(); // Ensure that the overlay container is attached to the DOM. if (overlayContainer.parentElement) { const siblings = overlayContainer.parentElement.children; for (let i = siblings.length - 1; i > -1; i--) { let sibling = siblings[i]; if (sibling !== overlayContainer && sibling.nodeName !== 'SCRIPT' && sibling.nodeName !== 'STYLE' && !sibling.hasAttribute('aria-live')) { this._ariaHiddenElements.set(sibling, sibling.getAttribute('aria-hidden')); sibling.setAttribute('aria-hidden', 'true'); } } } } /** Closes all of the dialogs in an array. */ _closeDialogs(dialogs) { let i = dialogs.length; while (i--) { // The `_openDialogs` property isn't updated after close until the rxjs subscription // runs on the next microtask, in addition to modifying the array as we're going // through it. We loop through all of them and call close without assuming that // they'll be removed from the list instantaneously. dialogs[i].close(); } } } _MatDialogBase.decorators = [ { type: Directive } ]; _MatDialogBase.ctorParameters = () => [ { type: Overlay }, { type: Injector }, { type: undefined }, { type: undefined }, { type: OverlayContainer }, { type: undefined }, { type: Type }, { type: Type }, { type: InjectionToken } ]; /** * Service to open Material Design modal dialogs. */ export class MatDialog extends _MatDialogBase { constructor(overlay, injector, /** * @deprecated `_location` parameter to be removed. * @breaking-change 10.0.0 */ location, defaultOptions, scrollStrategy, parentDialog, overlayContainer) { super(overlay, injector, defaultOptions, parentDialog, overlayContainer, scrollStrategy, MatDialogRef, MatDialogContainer, MAT_DIALOG_DATA); } } MatDialog.decorators = [ { type: Injectable } ]; MatDialog.ctorParameters = () => [ { type: Overlay }, { type: Injector }, { type: Location, decorators: [{ type: Optional }] }, { type: MatDialogConfig, decorators: [{ type: Optional }, { type: Inject, args: [MAT_DIALOG_DEFAULT_OPTIONS,] }] }, { type: undefined, decorators: [{ type: Inject, args: [MAT_DIALOG_SCROLL_STRATEGY,] }] }, { type: MatDialog, decorators: [{ type: Optional }, { type: SkipSelf }] }, { type: OverlayContainer } ]; /** * Applies default options to the dialog config. * @param config Config to be modified. * @param defaultOptions Default options provided. * @returns The new configuration object. */ function _applyConfigDefaults(config, defaultOptions) { return Object.assign(Object.assign({}, defaultOptions), config); } //# 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* @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 {\n  Overlay,\n  OverlayConfig,\n  OverlayContainer,\n  OverlayRef,\n  ScrollStrategy,\n} from '@angular/cdk/overlay';\nimport {ComponentPortal, ComponentType, TemplatePortal} from '@angular/cdk/portal';\nimport {Location} from '@angular/common';\nimport {\n  Directive,\n  Inject,\n  Injectable,\n  InjectFlags,\n  InjectionToken,\n  Injector,\n  OnDestroy,\n  Optional,\n  SkipSelf,\n  StaticProvider,\n  TemplateRef,\n  Type,\n} from '@angular/core';\nimport {defer, Observable, of as observableOf, Subject} from 'rxjs';\nimport {startWith} from 'rxjs/operators';\nimport {MatDialogConfig} from './dialog-config';\nimport {MatDialogContainer, _MatDialogContainerBase} from './dialog-container';\nimport {MatDialogRef} from './dialog-ref';\n\n\n/** Injection token that can be used to access the data that was passed in to a dialog. */\nexport const MAT_DIALOG_DATA = new InjectionToken<any>('MatDialogData');\n\n/** Injection token that can be used to specify default dialog options. */\nexport const MAT_DIALOG_DEFAULT_OPTIONS =\n    new InjectionToken<MatDialogConfig>('mat-dialog-default-options');\n\n/** Injection token that determines the scroll handling while the dialog is open. */\nexport const MAT_DIALOG_SCROLL_STRATEGY =\n    new InjectionToken<() => ScrollStrategy>('mat-dialog-scroll-strategy');\n\n/** @docs-private */\nexport function MAT_DIALOG_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {\n  return () => overlay.scrollStrategies.block();\n}\n\n/** @docs-private */\nexport function MAT_DIALOG_SCROLL_STRATEGY_PROVIDER_FACTORY(overlay: Overlay):\n  () => ScrollStrategy {\n  return () => overlay.scrollStrategies.block();\n}\n\n/** @docs-private */\nexport const MAT_DIALOG_SCROLL_STRATEGY_PROVIDER = {\n  provide: MAT_DIALOG_SCROLL_STRATEGY,\n  deps: [Overlay],\n  useFactory: MAT_DIALOG_SCROLL_STRATEGY_PROVIDER_FACTORY,\n};\n\n/**\n * Base class for dialog services. The base dialog service allows\n * for arbitrary dialog refs and dialog container components.\n */\n@Directive()\nexport abstract class _MatDialogBase<C extends _MatDialogContainerBase> implements OnDestroy {\n  private _openDialogsAtThisLevel: MatDialogRef<any>[] = [];\n  private readonly _afterAllClosedAtThisLevel = new Subject<void>();\n  private readonly _afterOpenedAtThisLevel = new Subject<MatDialogRef<any>>();\n  private _ariaHiddenElements = new Map<Element, string|null>();\n  private _scrollStrategy: () => ScrollStrategy;\n\n  /** Keeps track of the currently-open dialogs. */\n  get openDialogs(): MatDialogRef<any>[] {\n    return this._parentDialog ? this._parentDialog.openDialogs : this._openDialogsAtThisLevel;\n  }\n\n  /** Stream that emits when a dialog has been opened. */\n  get afterOpened(): Subject<MatDialogRef<any>> {\n    return this._parentDialog ? this._parentDialog.afterOpened : this._afterOpenedAtThisLevel;\n  }\n\n  _getAfterAllClosed(): Subject<void> {\n    const parent = this._parentDialog;\n    return parent ? parent._getAfterAllClosed() : this._afterAllClosedAtThisLevel;\n  }\n\n  // TODO (jelbourn): tighten the typing right-hand side of this expression.\n  /**\n   * Stream that emits when all open dialog have finished closing.\n   * Will emit on subscribe if there are no open dialogs to begin with.\n   */\n  readonly afterAllClosed: Observable<void> = defer(() => this.openDialogs.length ?\n      this._getAfterAllClosed() :\n      this._getAfterAllClosed().pipe(startWith(undefined))) as Observable<any>;\n\n  constructor(\n      private _overlay: Overlay,\n      private _injector: Injector,\n      private _defaultOptions: MatDialogConfig|undefined,\n      private _parentDialog: _MatDialogBase<C>|undefined,\n      private _overlayContainer: OverlayContainer,\n      scrollStrategy: any,\n      private _dialogRefConstructor: Type<MatDialogRef<any>>,\n      private _dialogContainerType: Type<C>,\n      private _dialogDataToken: InjectionToken<any>) {\n    this._scrollStrategy = scrollStrategy;\n  }\n\n  /**\n   * Opens a modal dialog containing the given component.\n   * @param component Type of the component to load into the dialog.\n   * @param config Extra configuration options.\n   * @returns Reference to the newly-opened dialog.\n   */\n  open<T, D = any, R = any>(component: ComponentType<T>,\n                            config?: MatDialogConfig<D>): MatDialogRef<T, R>;\n\n  /**\n   * Opens a modal dialog containing the given template.\n   * @param template TemplateRef to instantiate as the dialog content.\n   * @param config Extra configuration options.\n   * @returns Reference to the newly-opened dialog.\n   */\n  open<T, D = any, R = any>(template: TemplateRef<T>,\n                            config?: MatDialogConfig<D>): MatDialogRef<T, R>;\n\n  open<T, D = any, R = any>(template: ComponentType<T> | TemplateRef<T>,\n                            config?: MatDialogConfig<D>): MatDialogRef<T, R>;\n\n  open<T, D = any, R = any>(componentOrTemplateRef: ComponentType<T> | TemplateRef<T>,\n                            config?: MatDialogConfig<D>): MatDialogRef<T, R> {\n    config = _applyConfigDefaults(config, this._defaultOptions || new MatDialogConfig());\n\n    if (config.id && this.getDialogById(config.id) &&\n      (typeof ngDevMode === 'undefined' || ngDevMode)) {\n      throw Error(`Dialog with id \"${config.id}\" exists already. The dialog id must be unique.`);\n    }\n\n    const overlayRef = this._createOverlay(config);\n    const dialogContainer = this._attachDialogContainer(overlayRef, config);\n    const dialogRef = this._attachDialogContent<T, R>(componentOrTemplateRef,\n                                                      dialogContainer,\n                                                      overlayRef,\n                                                      config);\n\n    // If this is the first dialog that we're opening, hide all the non-overlay content.\n    if (!this.openDialogs.length) {\n      this._hideNonDialogContentFromAssistiveTechnology();\n    }\n\n    this.openDialogs.push(dialogRef);\n    dialogRef.afterClosed().subscribe(() => this._removeOpenDialog(dialogRef));\n    this.afterOpened.next(dialogRef);\n\n    // Notify the dialog container that the content has been attached.\n    dialogContainer._initializeWithAttachedContent();\n\n    return dialogRef;\n  }\n\n  /**\n   * Closes all of the currently-open dialogs.\n   */\n  closeAll(): void {\n    this._closeDialogs(this.openDialogs);\n  }\n\n  /**\n   * Finds an open dialog by its id.\n   * @param id ID to use when looking up the dialog.\n   */\n  getDialogById(id: string): MatDialogRef<any> | undefined {\n    return this.openDialogs.find(dialog => dialog.id === id);\n  }\n\n  ngOnDestroy() {\n    // Only close the dialogs at this level on destroy\n    // since the parent service may still be active.\n    this._closeDialogs(this._openDialogsAtThisLevel);\n    this._afterAllClosedAtThisLevel.complete();\n    this._afterOpenedAtThisLevel.complete();\n  }\n\n  /**\n   * Creates the overlay into which the dialog will be loaded.\n   * @param config The dialog configuration.\n   * @returns A promise resolving to the OverlayRef for the created overlay.\n   */\n  private _createOverlay(config: MatDialogConfig): OverlayRef {\n    const overlayConfig = this._getOverlayConfig(config);\n    return this._overlay.create(overlayConfig);\n  }\n\n  /**\n   * Creates an overlay config from a dialog config.\n   * @param dialogConfig The dialog configuration.\n   * @returns The overlay configuration.\n   */\n  private _getOverlayConfig(dialogConfig: MatDialogConfig): OverlayConfig {\n    const state = new OverlayConfig({\n      positionStrategy: this._overlay.position().global(),\n      scrollStrategy: dialogConfig.scrollStrategy || this._scrollStrategy(),\n      panelClass: dialogConfig.panelClass,\n      hasBackdrop: dialogConfig.hasBackdrop,\n      direction: dialogConfig.direction,\n      minWidth: dialogConfig.minWidth,\n      minHeight: dialogConfig.minHeight,\n      maxWidth: dialogConfig.maxWidth,\n      maxHeight: dialogConfig.maxHeight,\n      disposeOnNavigation: dialogConfig.closeOnNavigation\n    });\n\n    if (dialogConfig.backdropClass) {\n      state.backdropClass = dialogConfig.backdropClass;\n    }\n\n    return state;\n  }\n\n  /**\n   * Attaches a dialog container to a dialog's already-created overlay.\n   * @param overlay Reference to the dialog's underlying overlay.\n   * @param config The dialog configuration.\n   * @returns A promise resolving to a ComponentRef for the attached container.\n   */\n  private _attachDialogContainer(overlay: OverlayRef, config: MatDialogConfig): C {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n    const injector = Injector.create({\n      parent: userInjector || this._injector,\n      providers: [{provide: MatDialogConfig, useValue: config}]\n    });\n\n    const containerPortal = new ComponentPortal(this._dialogContainerType,\n        config.viewContainerRef, injector, config.componentFactoryResolver);\n    const containerRef = overlay.attach<C>(containerPortal);\n\n    return containerRef.instance;\n  }\n\n  /**\n   * Attaches the user-provided component to the already-created dialog container.\n   * @param componentOrTemplateRef The type of component being loaded into the dialog,\n   *     or a TemplateRef to instantiate as the content.\n   * @param dialogContainer Reference to the wrapping dialog container.\n   * @param overlayRef Reference to the overlay in which the dialog resides.\n   * @param config The dialog configuration.\n   * @returns A promise resolving to the MatDialogRef that should be returned to the user.\n   */\n  private _attachDialogContent<T, R>(\n      componentOrTemplateRef: ComponentType<T> | TemplateRef<T>,\n      dialogContainer: C,\n      overlayRef: OverlayRef,\n      config: MatDialogConfig): MatDialogRef<T, R> {\n\n    // Create a reference to the dialog we're creating in order to give the user a handle\n    // to modify and close it.\n    const dialogRef = new this._dialogRefConstructor(overlayRef, dialogContainer, config.id);\n\n    if (componentOrTemplateRef instanceof TemplateRef) {\n      dialogContainer.attachTemplatePortal(\n        new TemplatePortal<T>(componentOrTemplateRef, null!,\n          <any>{$implicit: config.data, dialogRef}));\n    } else {\n      const injector = this._createInjector<T>(config, dialogRef, dialogContainer);\n      const contentRef = dialogContainer.attachComponentPortal<T>(\n          new ComponentPortal(componentOrTemplateRef, config.viewContainerRef, injector));\n      dialogRef.componentInstance = contentRef.instance;\n    }\n\n    dialogRef\n      .updateSize(config.width, config.height)\n      .updatePosition(config.position);\n\n    return dialogRef;\n  }\n\n  /**\n   * Creates a custom injector to be used inside the dialog. This allows a component loaded inside\n   * of a dialog to close itself and, optionally, to return a value.\n   * @param config Config object that is used to construct the dialog.\n   * @param dialogRef Reference to the dialog.\n   * @param dialogContainer Dialog container element that wraps all of the contents.\n   * @returns The custom injector that can be used inside the dialog.\n   */\n  private _createInjector<T>(\n      config: MatDialogConfig,\n      dialogRef: MatDialogRef<T>,\n      dialogContainer: C): Injector {\n\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n\n    // The dialog container should be provided as the dialog container and the dialog's\n    // content are created out of the same `ViewContainerRef` and as such, are siblings\n    // for injector purposes. To allow the hierarchy that is expected, the dialog\n    // container is explicitly provided in the injector.\n    const providers: StaticProvider[] = [\n      {provide: this._dialogContainerType, useValue: dialogContainer},\n      {provide: this._dialogDataToken, useValue: config.data},\n      {provide: this._dialogRefConstructor, useValue: dialogRef}\n    ];\n\n    if (config.direction && (!userInjector ||\n        !userInjector.get<Directionality | null>(Directionality, null, InjectFlags.Optional))) {\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   * Removes a dialog from the array of open dialogs.\n   * @param dialogRef Dialog to be removed.\n   */\n  private _removeOpenDialog(dialogRef: MatDialogRef<any>) {\n    const index = this.openDialogs.indexOf(dialogRef);\n\n    if (index > -1) {\n      this.openDialogs.splice(index, 1);\n\n      // If all the dialogs were closed, remove/restore the `aria-hidden`\n      // to a the siblings and emit to the `afterAllClosed` stream.\n      if (!this.openDialogs.length) {\n        this._ariaHiddenElements.forEach((previousValue, element) => {\n          if (previousValue) {\n            element.setAttribute('aria-hidden', previousValue);\n          } else {\n            element.removeAttribute('aria-hidden');\n          }\n        });\n\n        this._ariaHiddenElements.clear();\n        this._getAfterAllClosed().next();\n      }\n    }\n  }\n\n  /**\n   * Hides all of the content that isn't an overlay from assistive technology.\n   */\n  private _hideNonDialogContentFromAssistiveTechnology() {\n    const overlayContainer = this._overlayContainer.getContainerElement();\n\n    // Ensure that the overlay container is attached to the DOM.\n    if (overlayContainer.parentElement) {\n      const siblings = overlayContainer.parentElement.children;\n\n      for (let i = siblings.length - 1; i > -1; i--) {\n        let sibling = siblings[i];\n\n        if (sibling !== overlayContainer &&\n          sibling.nodeName !== 'SCRIPT' &&\n          sibling.nodeName !== 'STYLE' &&\n          !sibling.hasAttribute('aria-live')) {\n\n          this._ariaHiddenElements.set(sibling, sibling.getAttribute('aria-hidden'));\n          sibling.setAttribute('aria-hidden', 'true');\n        }\n      }\n    }\n  }\n\n  /** Closes all of the dialogs in an array. */\n  private _closeDialogs(dialogs: MatDialogRef<any>[]) {\n    let i = dialogs.length;\n\n    while (i--) {\n      // The `_openDialogs` property isn't updated after close until the rxjs subscription\n      // runs on the next microtask, in addition to modifying the array as we're going\n      // through it. We loop through all of them and call close without assuming that\n      // they'll be removed from the list instantaneously.\n      dialogs[i].close();\n    }\n  }\n\n}\n\n/**\n * Service to open Material Design modal dialogs.\n */\n@Injectable()\nexport class MatDialog extends _MatDialogBase<MatDialogContainer> {\n  constructor(\n      overlay: Overlay,\n      injector: Injector,\n      /**\n       * @deprecated `_location` parameter to be removed.\n       * @breaking-change 10.0.0\n       */\n      @Optional() location: Location,\n      @Optional() @Inject(MAT_DIALOG_DEFAULT_OPTIONS) defaultOptions: MatDialogConfig,\n      @Inject(MAT_DIALOG_SCROLL_STRATEGY) scrollStrategy: any,\n      @Optional() @SkipSelf() parentDialog: MatDialog,\n      overlayContainer: OverlayContainer) {\n    super(overlay, injector, defaultOptions, parentDialog, overlayContainer, scrollStrategy,\n        MatDialogRef, MatDialogContainer, MAT_DIALOG_DATA);\n  }\n}\n\n/**\n * Applies default options to the dialog config.\n * @param config Config to be modified.\n * @param defaultOptions Default options provided.\n * @returns The new configuration object.\n */\nfunction _applyConfigDefaults(\n    config?: MatDialogConfig, defaultOptions?: MatDialogConfig): MatDialogConfig {\n  return {...defaultOptions, ...config};\n}\n"]}