| 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 | import { EventEmitter, Inject, Injectable, Optional } from '@angular/core';
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| 9 | import { DIR_DOCUMENT } from './dir-document-token';
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| 10 | import * as i0 from "@angular/core";
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| 11 | import * as i1 from "./dir-document-token";
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| 12 | /**
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| 13 | * The directionality (LTR / RTL) context for the application (or a subtree of it).
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| 14 | * Exposes the current direction and a stream of direction changes.
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| 15 | */
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| 16 | export class Directionality {
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| 17 | constructor(_document) {
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| 18 | /** The current 'ltr' or 'rtl' value. */
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| 19 | this.value = 'ltr';
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| 20 | /** Stream that emits whenever the 'ltr' / 'rtl' state changes. */
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| 21 | this.change = new EventEmitter();
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| 22 | if (_document) {
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| 23 | // TODO: handle 'auto' value -
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| 24 | // We still need to account for dir="auto".
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| 25 | // It looks like HTMLElemenet.dir is also "auto" when that's set to the attribute,
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| 26 | // but getComputedStyle return either "ltr" or "rtl". avoiding getComputedStyle for now
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| 27 | const bodyDir = _document.body ? _document.body.dir : null;
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| 28 | const htmlDir = _document.documentElement ? _document.documentElement.dir : null;
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| 29 | const value = bodyDir || htmlDir;
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| 30 | this.value = (value === 'ltr' || value === 'rtl') ? value : 'ltr';
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| 31 | }
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| 32 | }
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| 33 | ngOnDestroy() {
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| 34 | this.change.complete();
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| 35 | }
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| 36 | }
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| 37 | Directionality.ɵprov = i0.ɵɵdefineInjectable({ factory: function Directionality_Factory() { return new Directionality(i0.ɵɵinject(i1.DIR_DOCUMENT, 8)); }, token: Directionality, providedIn: "root" });
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| 38 | Directionality.decorators = [
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| 39 | { type: Injectable, args: [{ providedIn: 'root' },] }
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| 40 | ];
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| 41 | Directionality.ctorParameters = () => [
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| 42 | { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DIR_DOCUMENT,] }] }
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| 43 | ];
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| 44 | //# sourceMappingURL=data:application/json;base64,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 |
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