@covalent/core
Version:
Core Teradata UI Platform for layouts, icons, custom components and themes. This should be added as a dependency for any project that wants to use layouts, icons and themes for Angular Material.
274 lines • 38.2 kB
JavaScript
import { ConfigurableFocusTrapFactory, FocusMonitor, } from '@angular/cdk/a11y';
import { BasePortalOutlet, CdkPortalOutlet, } from '@angular/cdk/portal';
import { DOCUMENT } from '@angular/common';
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Directive, ElementRef, EventEmitter, HostBinding, HostListener, Inject, Optional, ViewChild, ViewEncapsulation, } from '@angular/core';
import { tdSideSheetAnimations } from './side-sheet.animation';
import { CovalentSideSheetConfig } from './side-sheet.config';
import * as i0 from "@angular/core";
import * as i1 from "@angular/cdk/a11y";
import * as i2 from "./side-sheet.config";
import * as i3 from "@angular/cdk/portal";
export function _getFocusedElementPierceShadowDom() {
let activeElement = typeof document !== 'undefined' && document
? document.activeElement
: null;
while (activeElement && activeElement.shadowRoot) {
const newActiveElement = activeElement.shadowRoot
.activeElement;
if (newActiveElement === activeElement) {
break;
}
else {
activeElement = newActiveElement;
}
}
return activeElement;
}
/**
* Base class for the `CovalentSideSheetContainer`. The base class does not implement
* animations as these are left to implementers of the side-sheet container.
*/
export class _CovalentSideSheetContainerBase extends BasePortalOutlet {
constructor(_elementRef, _focusTrapFactory, _changeDetectorRef, _document,
/** The side-sheet configuration. */
_config, _focusMonitor) {
super();
this._elementRef = _elementRef;
this._focusTrapFactory = _focusTrapFactory;
this._changeDetectorRef = _changeDetectorRef;
this._config = _config;
this._focusMonitor = _focusMonitor;
/** Emits when an animation state changes. */
this._animationStateChanged = new EventEmitter();
/** Element that was focused before the side-sheet was opened. Save this to restore upon close. */
this._elementFocusedBeforeSideSheetWasOpened = null;
/**
* Type of interaction that led to the side-sheet being closed. This is used to determine
* whether the focus style will be applied when returning focus to its original location
* after the side-sheet is closed.
*/
this._closeInteractionType = null;
/**
* Attaches a DOM portal to the side-sheet container.
* @param portal Portal to be attached.
* @deprecated To be turned into a method.
*/
this.attachDomPortal = (portal) => {
return this._portalOutlet.attachDomPortal(portal);
};
this._ariaLabelledBy = _config.ariaLabelledBy || null;
this._document = _document;
}
/** Initializes the side-sheet container with the attached content. */
_initializeWithAttachedContent() {
this._setupFocusTrap();
// Save the previously focused element. This element will be re-focused
// when the side-sheet closes.
this._capturePreviouslyFocusedElement();
}
/**
* Attach a ComponentPortal as content to this side-sheet container.
* @param portal Portal to be attached as the side-sheet content.
*/
attachComponentPortal(portal) {
return this._portalOutlet.attachComponentPortal(portal);
}
/**
* Attach a TemplatePortal as content to this side-sheet container.
* @param portal Portal to be attached as the side-sheet content.
*/
attachTemplatePortal(portal) {
return this._portalOutlet.attachTemplatePortal(portal);
}
/** Moves focus back into the side-sheet if it was moved out. */
_recaptureFocus() {
if (!this._containsFocus()) {
this._trapFocus();
}
}
/**
* Moves the focus inside the focus trap. When autoFocus is not set to 'side-sheet', if focus
* cannot be moved then focus will go to the side-sheet container.
*/
_trapFocus() {
const element = this._elementRef.nativeElement;
if (!this._config.autoFocus) {
if (!this._containsFocus()) {
element.focus();
}
}
else {
this._focusTrap
.focusInitialElementWhenReady()
.then((focusedSuccessfully) => {
// If we weren't able to find a focusable element in the side-sheet, then focus the side-sheet
// container instead.
if (!focusedSuccessfully) {
this._focusSideSheetContainer();
}
});
}
}
/** Restores focus to the element that was focused before the side-sheet opened. */
_restoreFocus() {
const previousElement = this._elementFocusedBeforeSideSheetWasOpened;
// We need the extra check, because IE can set the `activeElement` to null in some cases.
if (this._config.restoreFocus &&
previousElement &&
typeof previousElement.focus === 'function') {
const activeElement = _getFocusedElementPierceShadowDom();
const element = this._elementRef.nativeElement;
// Make sure that focus is still inside the side-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)) {
if (this._focusMonitor) {
this._focusMonitor.focusVia(previousElement, this._closeInteractionType);
this._closeInteractionType = null;
}
else {
previousElement.focus();
}
}
}
if (this._focusTrap) {
this._focusTrap.destroy();
}
}
/** Sets up the focus trap. */
_setupFocusTrap() {
this._focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement);
}
/** Captures the element that was focused before the side-sheet was opened. */
_capturePreviouslyFocusedElement() {
if (this._document) {
this._elementFocusedBeforeSideSheetWasOpened =
_getFocusedElementPierceShadowDom();
}
}
/** Focuses the side-sheet container. */
_focusSideSheetContainer() {
// Note that there is no focus method when rendering on the server.
if (this._elementRef.nativeElement.focus) {
this._elementRef.nativeElement.focus();
}
}
/** Returns whether focus is inside the side-sheet. */
_containsFocus() {
const element = this._elementRef.nativeElement;
const activeElement = _getFocusedElementPierceShadowDom();
return element === activeElement || element.contains(activeElement);
}
}
_CovalentSideSheetContainerBase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: _CovalentSideSheetContainerBase, deps: [{ token: i0.ElementRef }, { token: i1.ConfigurableFocusTrapFactory }, { token: i0.ChangeDetectorRef }, { token: DOCUMENT, optional: true }, { token: i2.CovalentSideSheetConfig }, { token: i1.FocusMonitor }], target: i0.ɵɵFactoryTarget.Directive });
_CovalentSideSheetContainerBase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "12.0.0", version: "13.2.2", type: _CovalentSideSheetContainerBase, viewQueries: [{ propertyName: "_portalOutlet", first: true, predicate: CdkPortalOutlet, descendants: true, static: true }], usesInheritance: true, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: _CovalentSideSheetContainerBase, decorators: [{
type: Directive
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.ConfigurableFocusTrapFactory }, { type: i0.ChangeDetectorRef }, { type: undefined, decorators: [{
type: Optional
}, {
type: Inject,
args: [DOCUMENT]
}] }, { type: i2.CovalentSideSheetConfig }, { type: i1.FocusMonitor }]; }, propDecorators: { _portalOutlet: [{
type: ViewChild,
args: [CdkPortalOutlet, { static: true }]
}] } });
/**
* Internal component that wraps the generated side-sheet content.
* This animation below is the only reason for duplicating most of the Material dialog code
*/
export class CovalentSideSheetContainerComponent extends _CovalentSideSheetContainerBase {
constructor() {
super(...arguments);
/** State of the side-sheet animation. */
this._state = 'enter';
this.tdSideSheetContainerClass = true;
this.tabIndex = -1;
this.arialModal = true;
this.idAttr = this._id;
this.roleAttr = this._config.role;
this.arialLabelByAttr = this._config.ariaLabel
? null
: this._ariaLabelledBy;
this.arialDescribeByAttr = this._config.ariaDescribedBy || null;
this.arialLabelAttr = this._config.ariaLabel;
}
get sideSheetAnimationState() {
return this._state;
}
onAnimateStart($event) {
this._onAnimationStart($event);
}
onAnimateDone($event) {
this._onAnimationDone($event);
}
/** Callback, invoked whenever an animation on the host completes. */
_onAnimationDone({ toState, totalTime }) {
if (toState === 'enter') {
this._trapFocus();
this._animationStateChanged.next({ state: 'opened', totalTime });
}
else if (toState === 'exit') {
this._restoreFocus();
this._animationStateChanged.next({ state: 'closed', totalTime });
}
}
/** Callback, invoked when an animation on the host starts. */
_onAnimationStart({ toState, totalTime }) {
if (toState === 'enter') {
this._animationStateChanged.next({ state: 'opening', totalTime });
}
else if (toState === 'exit' || toState === 'void') {
this._animationStateChanged.next({ state: 'closing', totalTime });
}
}
/** Starts the side-sheet exit animation. */
_startExitAnimation() {
this._state = 'exit';
this._changeDetectorRef.markForCheck();
}
}
CovalentSideSheetContainerComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: CovalentSideSheetContainerComponent, deps: null, target: i0.ɵɵFactoryTarget.Component });
CovalentSideSheetContainerComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.2.2", type: CovalentSideSheetContainerComponent, selector: "td-side-sheet-container", host: { listeners: { "@sideSheetContainer.start": "onAnimateStart($event)", "@sideSheetContainer.done": "onAnimateDone($event)" }, properties: { "class.td-side-sheet-container": "this.tdSideSheetContainerClass", "tabindex": "this.tabIndex", "aria-modal": "this.arialModal", "id": "this.idAttr", "attr.role": "this.roleAttr", "attr.aria-labelledby": "this.arialLabelByAttr", "attr.aria-describedby": "this.arialDescribeByAttr", "attr.aria-label": "this.arialLabelAttr", "@sideSheetContainer": "this.sideSheetAnimationState" } }, usesInheritance: true, ngImport: i0, template: ` <ng-template cdkPortalOutlet></ng-template> `, isInline: true, styles: [".td-side-sheet-container{background-color:#fff;box-shadow:0 8px 10px -5px #0003,0 16px 24px 2px #00000024,0 6px 30px 5px #0000001f;display:block;padding:24px;box-sizing:border-box;overflow:auto;outline:0;width:100%;height:100%;min-height:inherit;max-height:inherit}.td-side-sheet-wrapper{display:flex;flex-direction:column;height:100%}.td-side-sheet-content{margin:0 -24px;padding:0 24px;overflow:auto;flex:1;-webkit-overflow-scrolling:touch}.td-side-sheet-title{margin:-16px 0 20px;display:flex;align-items:center}.td-side-sheet-actions{padding:8px 0;margin:0 -16px -24px;display:flex;justify-content:space-between;flex-wrap:wrap;align-items:center;box-sizing:content-box}.td-side-sheet-actions[align=end]{justify-content:flex-end}.td-side-sheet-actions[align=center]{justify-content:center}.td-side-sheet-actions .mat-button-base+.mat-button-base,.td-side-sheet-actions .mat-mdc-button-base+.mat-mdc-button-base{margin-left:8px}[dir=rtl] .td-side-sheet-actions .mat-button-base+.mat-button-base,[dir=rtl] .td-side-sheet-actions .mat-mdc-button-base+.mat-mdc-button-base{margin-left:0;margin-right:8px}\n"], directives: [{ type: i3.CdkPortalOutlet, selector: "[cdkPortalOutlet]", inputs: ["cdkPortalOutlet"], outputs: ["attached"], exportAs: ["cdkPortalOutlet"] }], animations: [tdSideSheetAnimations.sideSheetContainer], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: CovalentSideSheetContainerComponent, decorators: [{
type: Component,
args: [{ selector: 'td-side-sheet-container', template: ` <ng-template cdkPortalOutlet></ng-template> `, encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, animations: [tdSideSheetAnimations.sideSheetContainer], styles: [".td-side-sheet-container{background-color:#fff;box-shadow:0 8px 10px -5px #0003,0 16px 24px 2px #00000024,0 6px 30px 5px #0000001f;display:block;padding:24px;box-sizing:border-box;overflow:auto;outline:0;width:100%;height:100%;min-height:inherit;max-height:inherit}.td-side-sheet-wrapper{display:flex;flex-direction:column;height:100%}.td-side-sheet-content{margin:0 -24px;padding:0 24px;overflow:auto;flex:1;-webkit-overflow-scrolling:touch}.td-side-sheet-title{margin:-16px 0 20px;display:flex;align-items:center}.td-side-sheet-actions{padding:8px 0;margin:0 -16px -24px;display:flex;justify-content:space-between;flex-wrap:wrap;align-items:center;box-sizing:content-box}.td-side-sheet-actions[align=end]{justify-content:flex-end}.td-side-sheet-actions[align=center]{justify-content:center}.td-side-sheet-actions .mat-button-base+.mat-button-base,.td-side-sheet-actions .mat-mdc-button-base+.mat-mdc-button-base{margin-left:8px}[dir=rtl] .td-side-sheet-actions .mat-button-base+.mat-button-base,[dir=rtl] .td-side-sheet-actions .mat-mdc-button-base+.mat-mdc-button-base{margin-left:0;margin-right:8px}\n"] }]
}], propDecorators: { tdSideSheetContainerClass: [{
type: HostBinding,
args: ['class.td-side-sheet-container']
}], tabIndex: [{
type: HostBinding,
args: ['tabindex']
}], arialModal: [{
type: HostBinding,
args: ['aria-modal']
}], idAttr: [{
type: HostBinding,
args: ['id']
}], roleAttr: [{
type: HostBinding,
args: ['attr.role']
}], arialLabelByAttr: [{
type: HostBinding,
args: ['attr.aria-labelledby']
}], arialDescribeByAttr: [{
type: HostBinding,
args: ['attr.aria-describedby']
}], arialLabelAttr: [{
type: HostBinding,
args: ['attr.aria-label']
}], sideSheetAnimationState: [{
type: HostBinding,
args: ['@sideSheetContainer']
}], onAnimateStart: [{
type: HostListener,
args: ['@sideSheetContainer.start', ['$event']]
}], onAnimateDone: [{
type: HostListener,
args: ['@sideSheetContainer.done', ['$event']]
}] } });
//# 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tslint:disable */\nimport { AnimationEvent } from '@angular/animations';\nimport {\n  ConfigurableFocusTrap,\n  ConfigurableFocusTrapFactory,\n  FocusMonitor,\n  FocusOrigin,\n} from '@angular/cdk/a11y';\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  Directive,\n  ElementRef,\n  EmbeddedViewRef,\n  EventEmitter,\n  HostBinding,\n  HostListener,\n  Inject,\n  Optional,\n  ViewChild,\n  ViewEncapsulation,\n} from '@angular/core';\nimport { tdSideSheetAnimations } from './side-sheet.animation';\nimport { CovalentSideSheetConfig } from './side-sheet.config';\n\nexport function _getFocusedElementPierceShadowDom(): HTMLElement | null {\n  let activeElement =\n    typeof document !== 'undefined' && document\n      ? (document.activeElement as HTMLElement | null)\n      : null;\n\n  while (activeElement && activeElement.shadowRoot) {\n    const newActiveElement = activeElement.shadowRoot\n      .activeElement as HTMLElement | null;\n    if (newActiveElement === activeElement) {\n      break;\n    } else {\n      activeElement = newActiveElement;\n    }\n  }\n\n  return activeElement;\n}\n\n/**\n * Base class for the `CovalentSideSheetContainer`. The base class does not implement\n * animations as these are left to implementers of the side-sheet container.\n */\n@Directive()\nexport abstract class _CovalentSideSheetContainerBase extends BasePortalOutlet {\n  protected _document: Document;\n\n  /** The portal outlet inside of this container into which the side-sheet content will be loaded. */\n  @ViewChild(CdkPortalOutlet, { static: true }) _portalOutlet!: CdkPortalOutlet;\n\n  /** The class that traps and manages focus within the side-sheet. */\n  private _focusTrap!: ConfigurableFocusTrap;\n\n  /** Emits when an animation state changes. */\n  _animationStateChanged = new EventEmitter<{\n    state: 'opened' | 'opening' | 'closing' | 'closed';\n    totalTime: number;\n  }>();\n\n  /** Element that was focused before the side-sheet was opened. Save this to restore upon close. */\n  private _elementFocusedBeforeSideSheetWasOpened: HTMLElement | null = null;\n\n  /**\n   * Type of interaction that led to the side-sheet being closed. This is used to determine\n   * whether the focus style will be applied when returning focus to its original location\n   * after the side-sheet is closed.\n   */\n  _closeInteractionType: FocusOrigin | null = null;\n\n  /** ID of the element that should be considered as the side-sheet's label. */\n  _ariaLabelledBy: string | null;\n\n  /** ID for the container DOM element. */\n  _id!: string;\n\n  constructor(\n    protected _elementRef: ElementRef,\n    protected _focusTrapFactory: ConfigurableFocusTrapFactory,\n    protected _changeDetectorRef: ChangeDetectorRef,\n    @Optional() @Inject(DOCUMENT) _document: any,\n    /** The side-sheet configuration. */\n    public _config: CovalentSideSheetConfig,\n    private _focusMonitor?: FocusMonitor\n  ) {\n    super();\n    this._ariaLabelledBy = _config.ariaLabelledBy || null;\n    this._document = _document;\n  }\n\n  /** Starts the side-sheet exit animation. */\n  abstract _startExitAnimation(): void;\n\n  /** Initializes the side-sheet container with the attached content. */\n  _initializeWithAttachedContent() {\n    this._setupFocusTrap();\n    // Save the previously focused element. This element will be re-focused\n    // when the side-sheet closes.\n    this._capturePreviouslyFocusedElement();\n  }\n\n  /**\n   * Attach a ComponentPortal as content to this side-sheet container.\n   * @param portal Portal to be attached as the side-sheet content.\n   */\n  attachComponentPortal<T>(portal: ComponentPortal<T>): ComponentRef<T> {\n    return this._portalOutlet.attachComponentPortal(portal);\n  }\n\n  /**\n   * Attach a TemplatePortal as content to this side-sheet container.\n   * @param portal Portal to be attached as the side-sheet content.\n   */\n  attachTemplatePortal<C>(portal: TemplatePortal<C>): EmbeddedViewRef<C> {\n    return this._portalOutlet.attachTemplatePortal(portal);\n  }\n\n  /**\n   * Attaches a DOM portal to the side-sheet container.\n   * @param portal Portal to be attached.\n   * @deprecated To be turned into a method.\n   */\n  override attachDomPortal = (portal: DomPortal) => {\n    return this._portalOutlet.attachDomPortal(portal);\n  };\n\n  /** Moves focus back into the side-sheet if it was moved out. */\n  _recaptureFocus() {\n    if (!this._containsFocus()) {\n      this._trapFocus();\n    }\n  }\n\n  /**\n   * Moves the focus inside the focus trap. When autoFocus is not set to 'side-sheet', if focus\n   * cannot be moved then focus will go to the side-sheet container.\n   */\n  protected _trapFocus() {\n    const element = this._elementRef.nativeElement;\n    if (!this._config.autoFocus) {\n      if (!this._containsFocus()) {\n        element.focus();\n      }\n    } else {\n      this._focusTrap\n        .focusInitialElementWhenReady()\n        .then((focusedSuccessfully) => {\n          // If we weren't able to find a focusable element in the side-sheet, then focus the side-sheet\n          // container instead.\n          if (!focusedSuccessfully) {\n            this._focusSideSheetContainer();\n          }\n        });\n    }\n  }\n\n  /** Restores focus to the element that was focused before the side-sheet opened. */\n  protected _restoreFocus() {\n    const previousElement = this._elementFocusedBeforeSideSheetWasOpened;\n\n    // We need the extra check, because IE can set the `activeElement` to null in some cases.\n    if (\n      this._config.restoreFocus &&\n      previousElement &&\n      typeof previousElement.focus === 'function'\n    ) {\n      const activeElement = _getFocusedElementPierceShadowDom();\n      const element = this._elementRef.nativeElement;\n\n      // Make sure that focus is still inside the side-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        if (this._focusMonitor) {\n          this._focusMonitor.focusVia(\n            previousElement,\n            this._closeInteractionType\n          );\n          this._closeInteractionType = null;\n        } else {\n          previousElement.focus();\n        }\n      }\n    }\n\n    if (this._focusTrap) {\n      this._focusTrap.destroy();\n    }\n  }\n\n  /** Sets up the focus trap. */\n  private _setupFocusTrap() {\n    this._focusTrap = this._focusTrapFactory.create(\n      this._elementRef.nativeElement\n    );\n  }\n\n  /** Captures the element that was focused before the side-sheet was opened. */\n  private _capturePreviouslyFocusedElement() {\n    if (this._document) {\n      this._elementFocusedBeforeSideSheetWasOpened =\n        _getFocusedElementPierceShadowDom();\n    }\n  }\n\n  /** Focuses the side-sheet container. */\n  private _focusSideSheetContainer() {\n    // Note that there is no focus method when rendering on the server.\n    if (this._elementRef.nativeElement.focus) {\n      this._elementRef.nativeElement.focus();\n    }\n  }\n\n  /** Returns whether focus is inside the side-sheet. */\n  private _containsFocus() {\n    const element = this._elementRef.nativeElement;\n    const activeElement = _getFocusedElementPierceShadowDom();\n    return element === activeElement || element.contains(activeElement);\n  }\n}\n\n/**\n * Internal component that wraps the generated side-sheet content.\n * This animation below is the only reason for duplicating most of the Material dialog code\n */\n@Component({\n  selector: 'td-side-sheet-container',\n  template: ` <ng-template cdkPortalOutlet></ng-template> `,\n  styleUrls: ['side-sheet.scss'],\n  encapsulation: ViewEncapsulation.None,\n  changeDetection: ChangeDetectionStrategy.Default,\n  animations: [tdSideSheetAnimations.sideSheetContainer],\n})\nexport class CovalentSideSheetContainerComponent extends _CovalentSideSheetContainerBase {\n  /** State of the side-sheet animation. */\n  _state: 'void' | 'enter' | 'exit' = 'enter';\n\n  @HostBinding('class.td-side-sheet-container') tdSideSheetContainerClass =\n    true;\n  @HostBinding('tabindex') tabIndex = -1;\n  @HostBinding('aria-modal') arialModal = true;\n  @HostBinding('id') idAttr = this._id;\n  @HostBinding('attr.role') roleAttr = this._config.role;\n  @HostBinding('attr.aria-labelledby') arialLabelByAttr = this._config.ariaLabel\n    ? null\n    : this._ariaLabelledBy;\n  @HostBinding('attr.aria-describedby') arialDescribeByAttr =\n    this._config.ariaDescribedBy || null;\n  @HostBinding('attr.aria-label') arialLabelAttr = this._config.ariaLabel;\n  @HostBinding('@sideSheetContainer') get sideSheetAnimationState() {\n    return this._state;\n  }\n  @HostListener('@sideSheetContainer.start', ['$event']) onAnimateStart(\n    $event: AnimationEvent\n  ) {\n    this._onAnimationStart($event);\n  }\n\n  @HostListener('@sideSheetContainer.done', ['$event']) onAnimateDone(\n    $event: AnimationEvent\n  ) {\n    this._onAnimationDone($event);\n  }\n\n  /** Callback, invoked whenever an animation on the host completes. */\n  _onAnimationDone({ toState, totalTime }: AnimationEvent) {\n    if (toState === 'enter') {\n      this._trapFocus();\n      this._animationStateChanged.next({ state: 'opened', totalTime });\n    } else if (toState === 'exit') {\n      this._restoreFocus();\n      this._animationStateChanged.next({ state: 'closed', totalTime });\n    }\n  }\n\n  /** Callback, invoked when an animation on the host starts. */\n  _onAnimationStart({ toState, totalTime }: AnimationEvent) {\n    if (toState === 'enter') {\n      this._animationStateChanged.next({ state: 'opening', totalTime });\n    } else if (toState === 'exit' || toState === 'void') {\n      this._animationStateChanged.next({ state: 'closing', totalTime });\n    }\n  }\n\n  /** Starts the side-sheet exit animation. */\n  _startExitAnimation(): void {\n    this._state = 'exit';\n    this._changeDetectorRef.markForCheck();\n  }\n}\n"]}