1 files changed, 104 insertions, 0 deletions
diff --git a/dom/presentation/PresentationDeviceInfoManager.jsm b/dom/presentation/PresentationDeviceInfoManager.jsm
new file mode 100644
index 000000000..205982b9c
--- /dev/null
+++ b/dom/presentation/PresentationDeviceInfoManager.jsm
@@ -0,0 +1,104 @@
+/* -*- 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();