| 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 | /** Regex that matches locales with an RTL script. Taken from `goog.i18n.bidi.isRtlLanguage`. */
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| 12 | const RTL_LOCALE_PATTERN = /^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|.*[-_](Adlm|Arab|Hebr|Nkoo|Rohg|Thaa))(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)/i;
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| 13 | /** Resolves a string value to a specific direction. */
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| 14 | export function _resolveDirectionality(rawValue) {
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| 15 | const value = rawValue?.toLowerCase() || '';
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| 16 | if (value === 'auto' && typeof navigator !== 'undefined' && navigator?.language) {
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| 17 | return RTL_LOCALE_PATTERN.test(navigator.language) ? 'rtl' : 'ltr';
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| 18 | }
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| 19 | return value === 'rtl' ? 'rtl' : 'ltr';
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| 20 | }
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| 21 | /**
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| 22 | * The directionality (LTR / RTL) context for the application (or a subtree of it).
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| 23 | * Exposes the current direction and a stream of direction changes.
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| 24 | */
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| 25 | class Directionality {
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| 26 | constructor(_document) {
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| 27 | /** The current 'ltr' or 'rtl' value. */
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| 28 | this.value = 'ltr';
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| 29 | /** Stream that emits whenever the 'ltr' / 'rtl' state changes. */
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| 30 | this.change = new EventEmitter();
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| 31 | if (_document) {
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| 32 | const bodyDir = _document.body ? _document.body.dir : null;
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| 33 | const htmlDir = _document.documentElement ? _document.documentElement.dir : null;
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| 34 | this.value = _resolveDirectionality(bodyDir || htmlDir || 'ltr');
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| 35 | }
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| 36 | }
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| 37 | ngOnDestroy() {
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| 38 | this.change.complete();
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| 39 | }
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| 40 | static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Directionality, deps: [{ token: DIR_DOCUMENT, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }
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| 41 | static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Directionality, providedIn: 'root' }); }
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| 42 | }
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| 43 | export { Directionality };
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| 44 | i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Directionality, decorators: [{
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| 45 | type: Injectable,
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| 46 | args: [{ providedIn: 'root' }]
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| 47 | }], ctorParameters: function () { return [{ type: undefined, decorators: [{
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| 48 | type: Optional
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| 49 | }, {
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| 50 | type: Inject,
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| 51 | args: [DIR_DOCUMENT]
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| 52 | }] }]; } });
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| 53 | //# sourceMappingURL=data:application/json;base64,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 |
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