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105 lines
3.3 KiB
JavaScript
105 lines
3.3 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- /
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
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this.EXPORTED_SYMBOLS = ["PresentationDeviceInfoService"];
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function log(aMsg) {
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//dump("PresentationDeviceInfoManager.jsm: " + aMsg + "\n");
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}
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "presentationDeviceManager",
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"@mozilla.org/presentation-device/manager;1",
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"nsIPresentationDeviceManager");
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XPCOMUtils.defineLazyServiceGetter(this, "ppmm",
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"@mozilla.org/parentprocessmessagemanager;1",
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"nsIMessageBroadcaster");
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this.PresentationDeviceInfoService = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIMessageListener,
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Ci.nsIObserver]),
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init: function() {
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log("init");
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ppmm.addMessageListener("PresentationDeviceInfoManager:GetAll", this);
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ppmm.addMessageListener("PresentationDeviceInfoManager:ForceDiscovery", this);
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Services.obs.addObserver(this, "presentation-device-change", false);
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},
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getAll: function(aData, aMm) {
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log("getAll");
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let deviceArray = presentationDeviceManager.getAvailableDevices().QueryInterface(Ci.nsIArray);
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if (!deviceArray) {
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aData.error = "DataError";
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aMm.sendAsyncMessage("PresentationDeviceInfoManager:GetAll:Result:Error", aData);
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return;
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}
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aData.devices = [];
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for (let i = 0; i < deviceArray.length; i++) {
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let device = deviceArray.queryElementAt(i, Ci.nsIPresentationDevice);
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aData.devices.push({
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id: device.id,
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name: device.name,
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type: device.type,
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});
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}
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aMm.sendAsyncMessage("PresentationDeviceInfoManager:GetAll:Result:Ok", aData);
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},
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forceDiscovery: function() {
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log("forceDiscovery");
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presentationDeviceManager.forceDiscovery();
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},
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observe: function(aSubject, aTopic, aData) {
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log("observe: " + aTopic);
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let device = aSubject.QueryInterface(Ci.nsIPresentationDevice);
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let data = {
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type: aData,
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deviceInfo: {
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id: device.id,
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name: device.name,
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type: device.type,
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},
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};
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ppmm.broadcastAsyncMessage("PresentationDeviceInfoManager:OnDeviceChange", data);
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},
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receiveMessage: function(aMessage) {
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if (!aMessage.target.assertPermission("presentation-device-manage")) {
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debug("receive message " + aMessage.name +
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" from a content process with no 'presentation-device-manage' privileges.");
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return null;
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}
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let msg = aMessage.data || {};
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let mm = aMessage.target;
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log("receiveMessage: " + aMessage.name);
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switch (aMessage.name) {
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case "PresentationDeviceInfoManager:GetAll": {
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this.getAll(msg, mm);
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break;
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}
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case "PresentationDeviceInfoManager:ForceDiscovery": {
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this.forceDiscovery();
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break;
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}
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}
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},
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};
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this.PresentationDeviceInfoService.init();
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