105 lines
3.3 KiB
JavaScript
105 lines
3.3 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- /
|
|
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
"use strict";
|
|
|
|
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
|
|
|
|
this.EXPORTED_SYMBOLS = ["PresentationDeviceInfoService"];
|
|
|
|
function log(aMsg) {
|
|
//dump("PresentationDeviceInfoManager.jsm: " + aMsg + "\n");
|
|
}
|
|
|
|
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
|
|
Cu.import("resource://gre/modules/Services.jsm");
|
|
|
|
XPCOMUtils.defineLazyServiceGetter(this, "presentationDeviceManager",
|
|
"@mozilla.org/presentation-device/manager;1",
|
|
"nsIPresentationDeviceManager");
|
|
|
|
XPCOMUtils.defineLazyServiceGetter(this, "ppmm",
|
|
"@mozilla.org/parentprocessmessagemanager;1",
|
|
"nsIMessageBroadcaster");
|
|
|
|
this.PresentationDeviceInfoService = {
|
|
QueryInterface: XPCOMUtils.generateQI([Ci.nsIMessageListener,
|
|
Ci.nsIObserver]),
|
|
|
|
init: function() {
|
|
log("init");
|
|
ppmm.addMessageListener("PresentationDeviceInfoManager:GetAll", this);
|
|
ppmm.addMessageListener("PresentationDeviceInfoManager:ForceDiscovery", this);
|
|
Services.obs.addObserver(this, "presentation-device-change", false);
|
|
},
|
|
|
|
getAll: function(aData, aMm) {
|
|
log("getAll");
|
|
let deviceArray = presentationDeviceManager.getAvailableDevices().QueryInterface(Ci.nsIArray);
|
|
if (!deviceArray) {
|
|
aData.error = "DataError";
|
|
aMm.sendAsyncMessage("PresentationDeviceInfoManager:GetAll:Result:Error", aData);
|
|
return;
|
|
}
|
|
|
|
aData.devices = [];
|
|
for (let i = 0; i < deviceArray.length; i++) {
|
|
let device = deviceArray.queryElementAt(i, Ci.nsIPresentationDevice);
|
|
aData.devices.push({
|
|
id: device.id,
|
|
name: device.name,
|
|
type: device.type,
|
|
});
|
|
}
|
|
aMm.sendAsyncMessage("PresentationDeviceInfoManager:GetAll:Result:Ok", aData);
|
|
},
|
|
|
|
forceDiscovery: function() {
|
|
log("forceDiscovery");
|
|
presentationDeviceManager.forceDiscovery();
|
|
},
|
|
|
|
observe: function(aSubject, aTopic, aData) {
|
|
log("observe: " + aTopic);
|
|
|
|
let device = aSubject.QueryInterface(Ci.nsIPresentationDevice);
|
|
let data = {
|
|
type: aData,
|
|
deviceInfo: {
|
|
id: device.id,
|
|
name: device.name,
|
|
type: device.type,
|
|
},
|
|
};
|
|
ppmm.broadcastAsyncMessage("PresentationDeviceInfoManager:OnDeviceChange", data);
|
|
},
|
|
|
|
receiveMessage: function(aMessage) {
|
|
if (!aMessage.target.assertPermission("presentation-device-manage")) {
|
|
debug("receive message " + aMessage.name +
|
|
" from a content process with no 'presentation-device-manage' privileges.");
|
|
return null;
|
|
}
|
|
|
|
let msg = aMessage.data || {};
|
|
let mm = aMessage.target;
|
|
|
|
log("receiveMessage: " + aMessage.name);
|
|
switch (aMessage.name) {
|
|
case "PresentationDeviceInfoManager:GetAll": {
|
|
this.getAll(msg, mm);
|
|
break;
|
|
}
|
|
case "PresentationDeviceInfoManager:ForceDiscovery": {
|
|
this.forceDiscovery();
|
|
break;
|
|
}
|
|
}
|
|
},
|
|
};
|
|
|
|
this.PresentationDeviceInfoService.init();
|