35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. 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 {ApplicationRef, Inject, Injectable, Optional} from '@angular/core';
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import {DOCUMENT, ɵDomAdapter as DomAdapter, ɵSharedStylesHost as SharedStylesHost, ɵTRANSITION_ID, ɵgetDOM as getDOM} from '@angular/platform-browser';
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@Injectable()
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export class ServerStylesHost extends SharedStylesHost {
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private head: any = null;
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constructor(
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@Inject(DOCUMENT) private doc: any,
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@Optional() @Inject(ɵTRANSITION_ID) private transitionId: string) {
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super();
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this.head = getDOM().getElementsByTagName(doc, 'head')[0];
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}
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private _addStyle(style: string): void {
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let adapter = getDOM();
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const el = adapter.createElement('style');
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adapter.setText(el, style);
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if (!!this.transitionId) {
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adapter.setAttribute(el, 'ng-transition', this.transitionId);
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}
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adapter.appendChild(this.head, el);
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}
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onStylesAdded(additions: Set<string>) { additions.forEach(style => this._addStyle(style)); }
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}
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