зеркало из https://github.com/mozilla/gecko-dev.git
87 строки
2.3 KiB
JavaScript
87 строки
2.3 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* 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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const {classes: Cc, interfaces: Ci, utils: Cu, manager: Cm} = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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const PRESENTATION_DEVICE_PROMPT_PATH =
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"chrome://presentation/content/PresentationDevicePrompt.jsm";
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function log(aMsg) {
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// dump("@ Presentation: " + aMsg + "\n");
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}
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function install(aData, aReason) {
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}
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function uninstall(aData, aReason) {
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}
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function startup(aData, aReason) {
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log("startup");
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Presentation.init();
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}
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function shutdown(aData, aReason) {
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log("shutdown");
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Presentation.uninit();
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}
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// Register/unregister a constructor as a factory.
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function Factory() {}
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Factory.prototype = {
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register(targetConstructor) {
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let proto = targetConstructor.prototype;
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this._classID = proto.classID;
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let factory = XPCOMUtils._getFactory(targetConstructor);
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this._factory = factory;
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let registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
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registrar.registerFactory(proto.classID, proto.classDescription,
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proto.contractID, factory);
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},
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unregister() {
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let registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
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registrar.unregisterFactory(this._classID, this._factory);
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this._factory = null;
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this._classID = null;
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},
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};
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var Presentation = {
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// PUBLIC APIs
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init() {
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log("init");
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// Register PresentationDevicePrompt into a XPCOM component.
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let {PresentationDevicePrompt} = Cu.import(PRESENTATION_DEVICE_PROMPT_PATH, {});
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this.PresentationDevicePrompt = PresentationDevicePrompt;
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this._register();
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},
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uninit() {
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log("uninit");
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// Unregister PresentationDevicePrompt XPCOM component.
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this._unregister();
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delete this.PresentationDevicePrompt;
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Cu.unload(PRESENTATION_DEVICE_PROMPT_PATH);
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},
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// PRIVATE APIs
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_register() {
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log("_register");
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this._devicePromptFactory = new Factory();
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this._devicePromptFactory.register(this.PresentationDevicePrompt);
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},
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_unregister() {
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log("_unregister");
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this._devicePromptFactory.unregister();
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delete this._devicePromptFactory;
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},
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};
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