/** * @license * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ (function() { 'use strict'; class GrExternalStyle extends Polymer.GestureEventListeners( Polymer.LegacyElementMixin( Polymer.Element)) { static get is() { return 'gr-external-style'; } static get properties() { return { name: String, _urlsImported: { type: Array, value() { return []; }, }, _stylesApplied: { type: Array, value() { return []; }, }, }; } /** * @suppress {checkTypes} */ _import(url) { if (this._urlsImported.includes(url)) { return Promise.resolve(); } this._urlsImported.push(url); return new Promise((resolve, reject) => { (this.importHref || Polymer.importHref)(url, resolve, reject); }); } _applyStyle(name) { if (this._stylesApplied.includes(name)) { return; } this._stylesApplied.push(name); const s = document.createElement('style'); s.setAttribute('include', name); const cs = document.createElement('custom-style'); cs.appendChild(s); // When using Shadow DOM must be added to the . // Within itself the styles would have no effect. const topEl = document.getElementsByTagName('body')[0]; topEl.insertBefore(cs, topEl.firstChild); Polymer.updateStyles(); } _importAndApply() { Promise.all(Gerrit._endpoints.getPlugins(this.name).map( pluginUrl => this._import(pluginUrl)) ).then(() => { const moduleNames = Gerrit._endpoints.getModules(this.name); for (const name of moduleNames) { this._applyStyle(name); } }); } attached() { super.attached(); this._importAndApply(); } ready() { super.ready(); Gerrit.awaitPluginsLoaded().then(() => this._importAndApply()); } } customElements.define(GrExternalStyle.is, GrExternalStyle); })();