| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | /* eslint-disable */
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| 9 | import { Injectable } from '@angular/core';
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| 10 | import * as i0 from "@angular/core";
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| 11 | /** Injectable that ensures only the most recently enabled FocusTrap is active. */
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| 12 | export class FocusTrapManager {
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| 13 | constructor() {
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| 14 | // A stack of the FocusTraps on the page. Only the FocusTrap at the
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| 15 | // top of the stack is active.
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| 16 | this._focusTrapStack = [];
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| 17 | }
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| 18 | /**
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| 19 | * Disables the FocusTrap at the top of the stack, and then pushes
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| 20 | * the new FocusTrap onto the stack.
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| 21 | */
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| 22 | register(focusTrap) {
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| 23 | // Dedupe focusTraps that register multiple times.
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| 24 | this._focusTrapStack = this._focusTrapStack.filter((ft) => ft !== focusTrap);
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| 25 | let stack = this._focusTrapStack;
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| 26 | if (stack.length) {
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| 27 | stack[stack.length - 1]._disable();
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| 28 | }
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| 29 | stack.push(focusTrap);
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| 30 | focusTrap._enable();
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| 31 | }
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| 32 | /**
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| 33 | * Removes the FocusTrap from the stack, and activates the
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| 34 | * FocusTrap that is the new top of the stack.
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| 35 | */
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| 36 | deregister(focusTrap) {
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| 37 | focusTrap._disable();
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| 38 | const stack = this._focusTrapStack;
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| 39 | const i = stack.indexOf(focusTrap);
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| 40 | if (i !== -1) {
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| 41 | stack.splice(i, 1);
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| 42 | if (stack.length) {
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| 43 | stack[stack.length - 1]._enable();
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| 44 | }
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| 45 | }
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| 46 | }
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| 47 | }
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| 48 | FocusTrapManager.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.6", ngImport: i0, type: FocusTrapManager, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
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| 49 | FocusTrapManager.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "14.0.6", ngImport: i0, type: FocusTrapManager, providedIn: 'root' });
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| 50 | i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.6", ngImport: i0, type: FocusTrapManager, decorators: [{
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| 51 | type: Injectable,
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| 52 | args: [{ providedIn: 'root' }]
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| 53 | }] });
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| 54 | //# sourceMappingURL=data:application/json;base64,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 |
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