/** * @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 { Component, ViewChild, ElementRef, ChangeDetectionStrategy, ViewEncapsulation, ChangeDetectorRef, EventEmitter, Inject, Optional, } from '@angular/core'; import { BasePortalOutlet, CdkPortalOutlet, } from '@angular/cdk/portal'; import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout'; import { MatBottomSheetConfig } from './bottom-sheet-config'; import { matBottomSheetAnimations } from './bottom-sheet-animations'; import { DOCUMENT } from '@angular/common'; import { FocusTrapFactory } from '@angular/cdk/a11y'; import { _getFocusedElementPierceShadowDom } from '@angular/cdk/platform'; // TODO(crisbeto): consolidate some logic between this, MatDialog and MatSnackBar /** * Internal component that wraps user-provided bottom sheet content. * @docs-private */ import * as ɵngcc0 from '@angular/core'; import * as ɵngcc1 from '@angular/cdk/a11y'; import * as ɵngcc2 from '@angular/cdk/layout'; import * as ɵngcc3 from './bottom-sheet-config'; import * as ɵngcc4 from '@angular/cdk/portal'; function MatBottomSheetContainer_ng_template_0_Template(rf, ctx) { } export class MatBottomSheetContainer extends BasePortalOutlet { constructor(_elementRef, _changeDetectorRef, _focusTrapFactory, breakpointObserver, document, /** The bottom sheet configuration. */ bottomSheetConfig) { super(); this._elementRef = _elementRef; this._changeDetectorRef = _changeDetectorRef; this._focusTrapFactory = _focusTrapFactory; this.bottomSheetConfig = bottomSheetConfig; /** The state of the bottom sheet animations. */ this._animationState = 'void'; /** Emits whenever the state of the animation changes. */ this._animationStateChanged = new EventEmitter(); /** Element that was focused before the bottom sheet was opened. */ this._elementFocusedBeforeOpened = null; /** * Attaches a DOM portal to the bottom sheet container. * @deprecated To be turned into a method. * @breaking-change 10.0.0 */ this.attachDomPortal = (portal) => { this._validatePortalAttached(); this._setPanelClass(); this._savePreviouslyFocusedElement(); return this._portalOutlet.attachDomPortal(portal); }; this._document = document; this._breakpointSubscription = breakpointObserver .observe([Breakpoints.Medium, Breakpoints.Large, Breakpoints.XLarge]) .subscribe(() => { this._toggleClass('mat-bottom-sheet-container-medium', breakpointObserver.isMatched(Breakpoints.Medium)); this._toggleClass('mat-bottom-sheet-container-large', breakpointObserver.isMatched(Breakpoints.Large)); this._toggleClass('mat-bottom-sheet-container-xlarge', breakpointObserver.isMatched(Breakpoints.XLarge)); }); } /** Attach a component portal as content to this bottom sheet container. */ attachComponentPortal(portal) { this._validatePortalAttached(); this._setPanelClass(); this._savePreviouslyFocusedElement(); return this._portalOutlet.attachComponentPortal(portal); } /** Attach a template portal as content to this bottom sheet container. */ attachTemplatePortal(portal) { this._validatePortalAttached(); this._setPanelClass(); this._savePreviouslyFocusedElement(); return this._portalOutlet.attachTemplatePortal(portal); } /** Begin animation of bottom sheet entrance into view. */ enter() { if (!this._destroyed) { this._animationState = 'visible'; this._changeDetectorRef.detectChanges(); } } /** Begin animation of the bottom sheet exiting from view. */ exit() { if (!this._destroyed) { this._animationState = 'hidden'; this._changeDetectorRef.markForCheck(); } } ngOnDestroy() { this._breakpointSubscription.unsubscribe(); this._destroyed = true; } _onAnimationDone(event) { if (event.toState === 'hidden') { this._restoreFocus(); } else if (event.toState === 'visible') { this._trapFocus(); } this._animationStateChanged.emit(event); } _onAnimationStart(event) { this._animationStateChanged.emit(event); } _toggleClass(cssClass, add) { const classList = this._elementRef.nativeElement.classList; add ? classList.add(cssClass) : classList.remove(cssClass); } _validatePortalAttached() { if (this._portalOutlet.hasAttached() && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw Error('Attempting to attach bottom sheet content after content is already attached'); } } _setPanelClass() { const element = this._elementRef.nativeElement; const panelClass = this.bottomSheetConfig.panelClass; if (Array.isArray(panelClass)) { // Note that we can't use a spread here, because IE doesn't support multiple arguments. panelClass.forEach(cssClass => element.classList.add(cssClass)); } else if (panelClass) { element.classList.add(panelClass); } } /** Moves the focus inside the focus trap. */ _trapFocus() { const element = this._elementRef.nativeElement; if (!this._focusTrap) { this._focusTrap = this._focusTrapFactory.create(element); } if (this.bottomSheetConfig.autoFocus) { this._focusTrap.focusInitialElementWhenReady(); } else { const activeElement = _getFocusedElementPierceShadowDom(); // Otherwise ensure that focus is on the container. It's possible that a different // component tried to move focus while the open animation was running. See: // https://github.com/angular/components/issues/16215. Note that we only want to do this // if the focus isn't inside the bottom sheet already, because it's possible that the // consumer turned off `autoFocus` in order to move focus themselves. if (activeElement !== element && !element.contains(activeElement)) { element.focus(); } } } /** Restores focus to the element that was focused before the bottom sheet was opened. */ _restoreFocus() { const toFocus = this._elementFocusedBeforeOpened; // We need the extra check, because IE can set the `activeElement` to null in some cases. if (this.bottomSheetConfig.restoreFocus && toFocus && typeof toFocus.focus === 'function') { const activeElement = _getFocusedElementPierceShadowDom(); const element = this._elementRef.nativeElement; // Make sure that focus is still inside the bottom sheet or is on the body (usually because a // non-focusable element like the backdrop was clicked) before moving it. It's possible that // the consumer moved it themselves before the animation was done, in which case we shouldn't // do anything. if (!activeElement || activeElement === this._document.body || activeElement === element || element.contains(activeElement)) { toFocus.focus(); } } if (this._focusTrap) { this._focusTrap.destroy(); } } /** Saves a reference to the element that was focused before the bottom sheet was opened. */ _savePreviouslyFocusedElement() { this._elementFocusedBeforeOpened = _getFocusedElementPierceShadowDom(); // The `focus` method isn't available during server-side rendering. if (this._elementRef.nativeElement.focus) { Promise.resolve().then(() => this._elementRef.nativeElement.focus()); } } } MatBottomSheetContainer.ɵfac = function MatBottomSheetContainer_Factory(t) { return new (t || MatBottomSheetContainer)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ChangeDetectorRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc1.FocusTrapFactory), ɵngcc0.ɵɵdirectiveInject(ɵngcc2.BreakpointObserver), ɵngcc0.ɵɵdirectiveInject(DOCUMENT, 8), ɵngcc0.ɵɵdirectiveInject(ɵngcc3.MatBottomSheetConfig)); }; MatBottomSheetContainer.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: MatBottomSheetContainer, selectors: [["mat-bottom-sheet-container"]], viewQuery: function MatBottomSheetContainer_Query(rf, ctx) { if (rf & 1) { ɵngcc0.ɵɵviewQuery(CdkPortalOutlet, 7); } if (rf & 2) { let _t; ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx._portalOutlet = _t.first); } }, hostAttrs: ["tabindex", "-1", "role", "dialog", "aria-modal", "true", 1, "mat-bottom-sheet-container"], hostVars: 2, hostBindings: function MatBottomSheetContainer_HostBindings(rf, ctx) { if (rf & 1) { ɵngcc0.ɵɵsyntheticHostListener("@state.start", function MatBottomSheetContainer_animation_state_start_HostBindingHandler($event) { return ctx._onAnimationStart($event); })("@state.done", function MatBottomSheetContainer_animation_state_done_HostBindingHandler($event) { return ctx._onAnimationDone($event); }); } if (rf & 2) { ɵngcc0.ɵɵattribute("aria-label", ctx.bottomSheetConfig == null ? null : ctx.bottomSheetConfig.ariaLabel); ɵngcc0.ɵɵsyntheticHostProperty("@state", ctx._animationState); } }, features: [ɵngcc0.ɵɵInheritDefinitionFeature], decls: 1, vars: 0, consts: [["cdkPortalOutlet", ""]], template: function MatBottomSheetContainer_Template(rf, ctx) { if (rf & 1) { ɵngcc0.ɵɵtemplate(0, MatBottomSheetContainer_ng_template_0_Template, 0, 0, "ng-template", 0); } }, directives: [ɵngcc4.CdkPortalOutlet], styles: [".mat-bottom-sheet-container{padding:8px 16px;min-width:100vw;box-sizing:border-box;display:block;outline:0;max-height:80vh;overflow:auto}.cdk-high-contrast-active .mat-bottom-sheet-container{outline:1px solid}.mat-bottom-sheet-container-xlarge,.mat-bottom-sheet-container-large,.mat-bottom-sheet-container-medium{border-top-left-radius:4px;border-top-right-radius:4px}.mat-bottom-sheet-container-medium{min-width:384px;max-width:calc(100vw - 128px)}.mat-bottom-sheet-container-large{min-width:512px;max-width:calc(100vw - 256px)}.mat-bottom-sheet-container-xlarge{min-width:576px;max-width:calc(100vw - 384px)}\n"], encapsulation: 2, data: { animation: [matBottomSheetAnimations.bottomSheetState] } }); MatBottomSheetContainer.ctorParameters = () => [ { type: ElementRef }, { type: ChangeDetectorRef }, { type: FocusTrapFactory }, { type: BreakpointObserver }, { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }, { type: MatBottomSheetConfig } ]; MatBottomSheetContainer.propDecorators = { _portalOutlet: [{ type: ViewChild, args: [CdkPortalOutlet, { static: true },] }] }; (function () { (typeof ngDevMode === "undefined" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(MatBottomSheetContainer, [{ type: Component, args: [{ selector: 'mat-bottom-sheet-container', template: "\r\n", // In Ivy embedded views will be change detected from their declaration place, rather than where // they were stamped out. This means that we can't have the bottom sheet container be OnPush, // because it might cause the sheets that were opened from a template not to be out of date. // tslint:disable-next-line:validate-decorators changeDetection: ChangeDetectionStrategy.Default, encapsulation: ViewEncapsulation.None, animations: [matBottomSheetAnimations.bottomSheetState], host: { 'class': 'mat-bottom-sheet-container', 'tabindex': '-1', 'role': 'dialog', 'aria-modal': 'true', '[attr.aria-label]': 'bottomSheetConfig?.ariaLabel', '[@state]': '_animationState', '(@state.start)': '_onAnimationStart($event)', '(@state.done)': '_onAnimationDone($event)' }, styles: [".mat-bottom-sheet-container{padding:8px 16px;min-width:100vw;box-sizing:border-box;display:block;outline:0;max-height:80vh;overflow:auto}.cdk-high-contrast-active .mat-bottom-sheet-container{outline:1px solid}.mat-bottom-sheet-container-xlarge,.mat-bottom-sheet-container-large,.mat-bottom-sheet-container-medium{border-top-left-radius:4px;border-top-right-radius:4px}.mat-bottom-sheet-container-medium{min-width:384px;max-width:calc(100vw - 128px)}.mat-bottom-sheet-container-large{min-width:512px;max-width:calc(100vw - 256px)}.mat-bottom-sheet-container-xlarge{min-width:576px;max-width:calc(100vw - 384px)}\n"] }] }], function () { return [{ type: ɵngcc0.ElementRef }, { type: ɵngcc0.ChangeDetectorRef }, { type: ɵngcc1.FocusTrapFactory }, { type: ɵngcc2.BreakpointObserver }, { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT] }] }, { type: ɵngcc3.MatBottomSheetConfig }]; }, { _portalOutlet: [{ type: ViewChild, args: [CdkPortalOutlet, { static: true }] }] }); })(); //# 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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 {\n  Component,\n  ComponentRef,\n  EmbeddedViewRef,\n  ViewChild,\n  OnDestroy,\n  ElementRef,\n  ChangeDetectionStrategy,\n  ViewEncapsulation,\n  ChangeDetectorRef,\n  EventEmitter,\n  Inject,\n  Optional,\n} from '@angular/core';\nimport {AnimationEvent} from '@angular/animations';\nimport {\n  BasePortalOutlet,\n  ComponentPortal,\n  TemplatePortal,\n  CdkPortalOutlet,\n  DomPortal,\n} from '@angular/cdk/portal';\nimport {BreakpointObserver, Breakpoints} from '@angular/cdk/layout';\nimport {MatBottomSheetConfig} from './bottom-sheet-config';\nimport {matBottomSheetAnimations} from './bottom-sheet-animations';\nimport {Subscription} from 'rxjs';\nimport {DOCUMENT} from '@angular/common';\nimport {FocusTrap, FocusTrapFactory} from '@angular/cdk/a11y';\nimport {_getFocusedElementPierceShadowDom} from '@angular/cdk/platform';\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    breakpointObserver: BreakpointObserver,\n    @Optional() @Inject(DOCUMENT) document: any,\n    /** The bottom sheet configuration. */\n    public bottomSheetConfig: MatBottomSheetConfig) {\n    super();\n\n    this._document = document;\n    this._breakpointSubscription = breakpointObserver\n      .observe([Breakpoints.Medium, Breakpoints.Large, Breakpoints.XLarge])\n      .subscribe(() => {\n        this._toggleClass('mat-bottom-sheet-container-medium',\n            breakpointObserver.isMatched(Breakpoints.Medium));\n        this._toggleClass('mat-bottom-sheet-container-large',\n            breakpointObserver.isMatched(Breakpoints.Large));\n        this._toggleClass('mat-bottom-sheet-container-xlarge',\n            breakpointObserver.isMatched(Breakpoints.XLarge));\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    const classList = this._elementRef.nativeElement.classList;\n    add ? classList.add(cssClass) : classList.remove(cssClass);\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    const panelClass = this.bottomSheetConfig.panelClass;\n\n    if (Array.isArray(panelClass)) {\n      // Note that we can't use a spread here, because IE doesn't support multiple arguments.\n      panelClass.forEach(cssClass => element.classList.add(cssClass));\n    } else if (panelClass) {\n      element.classList.add(panelClass);\n    }\n  }\n\n  /** Moves the focus inside the focus trap. */\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 (this.bottomSheetConfig.autoFocus) {\n      this._focusTrap.focusInitialElementWhenReady();\n    } else {\n      const activeElement = _getFocusedElementPierceShadowDom();\n\n      // Otherwise ensure that focus is on the 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 turned off `autoFocus` in order to move focus themselves.\n      if (activeElement !== element && !element.contains(activeElement)) {\n        element.focus();\n      }\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 (!activeElement || activeElement === this._document.body || activeElement === element ||\n        element.contains(activeElement)) {\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      Promise.resolve().then(() => this._elementRef.nativeElement.focus());\n    }\n  }\n}\n"]}