blob: 65f2207689442c4cdd16303d2d95dba4b2ce61c0 [file] [log] [blame]
/**
* @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';
Polymer({
is: 'gr-plugin-host',
_legacyUndefinedCheck: true,
properties: {
config: {
type: Object,
observer: '_configChanged',
},
},
behaviors: [
Gerrit.BaseUrlBehavior,
],
_configChanged(config) {
const plugins = config.plugin;
const htmlPlugins = (plugins.html_resource_paths || [])
.map(p => this._urlFor(p))
.filter(p => !Gerrit._isPluginPreloaded(p));
const jsPlugins =
this._handleMigrations(plugins.js_resource_paths || [], htmlPlugins)
.map(p => this._urlFor(p))
.filter(p => !Gerrit._isPluginPreloaded(p));
const shouldLoadTheme = config.default_theme &&
!Gerrit._isPluginPreloaded('preloaded:gerrit-theme');
const defaultTheme =
shouldLoadTheme ? this._urlFor(config.default_theme) : null;
const pluginsPending =
[].concat(jsPlugins, htmlPlugins, defaultTheme || []);
Gerrit._setPluginsPending(pluginsPending);
if (defaultTheme) {
// Make theme first to be first to load.
// Load sync to work around rare theme loading race condition.
this._importHtmlPlugins([defaultTheme], true);
}
this._loadJsPlugins(jsPlugins);
this._importHtmlPlugins(htmlPlugins);
},
/**
* Omit .js plugins that have .html counterparts.
* For example, if plugin provides foo.js and foo.html, skip foo.js.
*/
_handleMigrations(jsPlugins, htmlPlugins) {
return jsPlugins.filter(url => {
const counterpart = url.replace(/\.js$/, '.html');
return !htmlPlugins.includes(counterpart);
});
},
/**
* @suppress {checkTypes}
* States that it expects no more than 3 parameters, but that's not true.
* @todo (beckysiegel) check Polymer annotations and submit change.
* @param {Array} plugins
* @param {boolean=} opt_sync
*/
_importHtmlPlugins(plugins, opt_sync) {
const async = !opt_sync;
for (const url of plugins) {
// onload (second param) needs to be a function. When null or undefined
// were passed, plugins were not loaded correctly.
this.importHref(
this._urlFor(url), () => {},
Gerrit._pluginInstallError.bind(null, `${url} import error`),
async);
}
},
_loadJsPlugins(plugins) {
for (const url of plugins) {
this._createScriptTag(this._urlFor(url));
}
},
_createScriptTag(url) {
const el = document.createElement('script');
el.defer = true;
el.src = url;
el.onerror = Gerrit._pluginInstallError.bind(null, `${url} load error`);
return document.body.appendChild(el);
},
_urlFor(pathOrUrl) {
if (!pathOrUrl) {
return pathOrUrl;
}
if (pathOrUrl.startsWith('preloaded:') ||
pathOrUrl.startsWith('http')) {
// Plugins are loaded from another domain or preloaded.
return pathOrUrl;
}
if (!pathOrUrl.startsWith('/')) {
pathOrUrl = '/' + pathOrUrl;
}
return window.location.origin + this.getBaseUrl() + pathOrUrl;
},
});
})();