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49 lines
6.0 KiB
49 lines
6.0 KiB
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import { FocusTrap } from './focus-trap';
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/**
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* Class that allows for trapping focus within a DOM element.
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*
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* This class uses a strategy pattern that determines how it traps focus.
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* See FocusTrapInertStrategy.
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*/
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export class ConfigurableFocusTrap extends FocusTrap {
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constructor(_element, _checker, _ngZone, _document, _focusTrapManager, _inertStrategy, config) {
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super(_element, _checker, _ngZone, _document, config.defer);
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this._focusTrapManager = _focusTrapManager;
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this._inertStrategy = _inertStrategy;
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this._focusTrapManager.register(this);
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}
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/** Whether the FocusTrap is enabled. */
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get enabled() { return this._enabled; }
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set enabled(value) {
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this._enabled = value;
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if (this._enabled) {
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this._focusTrapManager.register(this);
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}
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else {
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this._focusTrapManager.deregister(this);
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}
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}
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/** Notifies the FocusTrapManager that this FocusTrap will be destroyed. */
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destroy() {
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this._focusTrapManager.deregister(this);
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super.destroy();
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}
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/** @docs-private Implemented as part of ManagedFocusTrap. */
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_enable() {
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this._inertStrategy.preventFocus(this);
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this.toggleAnchors(true);
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}
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/** @docs-private Implemented as part of ManagedFocusTrap. */
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_disable() {
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this._inertStrategy.allowFocus(this);
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this.toggleAnchors(false);
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}
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}
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