111 lines
3.4 KiB
JavaScript
111 lines
3.4 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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(function() {
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'use strict';
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Polymer({
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is: 'gr-plugin-host',
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properties: {
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config: {
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type: Object,
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observer: '_configChanged',
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},
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},
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behaviors: [
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Gerrit.BaseUrlBehavior,
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],
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_configChanged(config) {
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const plugins = config.plugin;
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const htmlPlugins = plugins.html_resource_paths || [];
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const jsPlugins =
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this._handleMigrations(plugins.js_resource_paths || [], htmlPlugins);
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const defaultTheme = config.default_theme;
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const pluginsPending = []
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.concat(jsPlugins, htmlPlugins, defaultTheme || [])
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.map(p => this._urlFor(p))
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.filter(p => !Gerrit._isPluginPreloaded(p));
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Gerrit._setPluginsPending(pluginsPending);
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if (defaultTheme) {
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// Make theme first to be first to load.
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// Load sync to work around rare theme loading race condition.
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this._importHtmlPlugins([defaultTheme], true);
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}
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this._loadJsPlugins(jsPlugins);
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this._importHtmlPlugins(htmlPlugins);
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},
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/**
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* Omit .js plugins that have .html counterparts.
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* For example, if plugin provides foo.js and foo.html, skip foo.js.
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*/
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_handleMigrations(jsPlugins, htmlPlugins) {
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return jsPlugins.filter(url => {
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const counterpart = url.replace(/\.js$/, '.html');
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return !htmlPlugins.includes(counterpart);
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});
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},
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/**
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* @suppress {checkTypes}
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* States that it expects no more than 3 parameters, but that's not true.
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* @todo (beckysiegel) check Polymer annotations and submit change.
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* @param {Array} plugins
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* @param {boolean=} opt_sync
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*/
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_importHtmlPlugins(plugins, opt_sync) {
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const async = !opt_sync;
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for (const url of plugins) {
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// onload (second param) needs to be a function. When null or undefined
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// were passed, plugins were not loaded correctly.
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this.importHref(
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this._urlFor(url), () => {},
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Gerrit._pluginInstallError.bind(null, `${url} import error`),
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async);
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}
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},
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_loadJsPlugins(plugins) {
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for (const url of plugins) {
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this._createScriptTag(this._urlFor(url));
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}
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},
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_createScriptTag(url) {
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const el = document.createElement('script');
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el.defer = true;
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el.src = url;
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el.onerror = Gerrit._pluginInstallError.bind(null, `${url} load error`);
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return document.body.appendChild(el);
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},
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_urlFor(pathOrUrl) {
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if (pathOrUrl.startsWith('preloaded:') ||
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pathOrUrl.startsWith('http')) {
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// Plugins are loaded from another domain or preloaded.
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return pathOrUrl;
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}
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if (!pathOrUrl.startsWith('/')) {
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pathOrUrl = '/' + pathOrUrl;
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}
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return window.location.origin + this.getBaseUrl() + pathOrUrl;
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},
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});
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})();
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