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0a92c7bb9b
MozReview-Commit-ID: FRCdXHc3S4K --HG-- extra : rebase_source : 4d7eb8614745fdbcac37b101a617d7aa3d43eea0
116 lines
2.7 KiB
JavaScript
116 lines
2.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = ["ExtensionAPI", "ExtensionAPIs"];
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/* exported ExtensionAPIs */
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const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "ConsoleAPI",
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"resource://gre/modules/Console.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Schemas",
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"resource://gre/modules/Schemas.jsm");
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Cu.import("resource://gre/modules/ExtensionUtils.jsm");
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const global = this;
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class ExtensionAPI extends ExtensionUtils.EventEmitter {
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constructor(extension) {
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super();
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this.extension = extension;
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extension.once("shutdown", () => {
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if (this.onShutdown) {
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this.onShutdown(extension.shutdownReason);
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}
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this.extension = null;
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});
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}
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destroy() {
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}
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onManifestEntry(entry) {
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}
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getAPI(context) {
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throw new Error("Not Implemented");
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}
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}
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var ExtensionAPIs = {
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apis: new Map(),
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load(apiName) {
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let api = this.apis.get(apiName);
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if (api.loadPromise) {
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return api.loadPromise;
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}
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let {script, schema} = api;
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let addonId = `${apiName}@experiments.addons.mozilla.org`;
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api.sandbox = Cu.Sandbox(global, {
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wantXrays: false,
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sandboxName: script,
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addonId,
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metadata: {addonID: addonId},
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});
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api.sandbox.ExtensionAPI = ExtensionAPI;
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// Create a console getter which lazily provide a ConsoleAPI instance.
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XPCOMUtils.defineLazyGetter(api.sandbox, "console", () => {
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return new ConsoleAPI({prefix: addonId});
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});
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Services.scriptloader.loadSubScript(script, api.sandbox, "UTF-8");
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api.loadPromise = Schemas.load(schema).then(() => {
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let API = Cu.evalInSandbox("API", api.sandbox);
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API.prototype.namespace = apiName;
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return API;
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});
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return api.loadPromise;
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},
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unload(apiName) {
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let api = this.apis.get(apiName);
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let {schema} = api;
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Schemas.unload(schema);
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Cu.nukeSandbox(api.sandbox);
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api.sandbox = null;
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api.loadPromise = null;
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},
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register(namespace, schema, script) {
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if (this.apis.has(namespace)) {
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throw new Error(`API namespace already exists: ${namespace}`);
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}
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this.apis.set(namespace, {schema, script});
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},
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unregister(namespace) {
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if (!this.apis.has(namespace)) {
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throw new Error(`API namespace does not exist: ${namespace}`);
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}
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this.apis.delete(namespace);
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},
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};
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