1 files changed, 134 insertions, 0 deletions
diff --git a/mobile/android/components/PresentationDevicePrompt.js b/mobile/android/components/PresentationDevicePrompt.js
new file mode 100644
index 000000000..e3e063373
--- /dev/null
+++ b/mobile/android/components/PresentationDevicePrompt.js
@@ -0,0 +1,134 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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, results: Cr } = Components;
+
+Cu.import('resource://gre/modules/XPCOMUtils.jsm');
+Cu.import('resource://gre/modules/Services.jsm');
+
+XPCOMUtils.defineLazyModuleGetter(this, "Prompt",
+                                  "resource://gre/modules/Prompt.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
+                                  "resource://gre/modules/UITelemetry.jsm");
+
+const kPRESENTATIONDEVICEPROMPT_CONTRACTID = "@mozilla.org/presentation-device/prompt;1";
+const kPRESENTATIONDEVICEPROMPT_CID        = Components.ID("{388bd149-c919-4a43-b646-d7ec57877689}");
+
+function debug(aMsg) {
+  // dump("-*- PresentationDevicePrompt: " + aMsg + "\n");
+}
+
+// nsIPresentationDevicePrompt
+function PresentationDevicePrompt() {
+  debug("PresentationDevicePrompt init");
+}
+
+PresentationDevicePrompt.prototype = {
+  classID: kPRESENTATIONDEVICEPROMPT_CID,
+  contractID: kPRESENTATIONDEVICEPROMPT_CONTRACTID,
+  classDescription: "Fennec Presentation Device Prompt",
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIPresentationDevicePrompt]),
+
+  _devices: [],   // Store all available presentation devices
+  _request: null, // Store the request from presentation api
+
+  _getString: function(aName) {
+    debug("_getString");
+
+    if (!this.bundle) {
+      this.bundle = Services.strings.createBundle("chrome://browser/locale/devicePrompt.properties");
+    }
+    return this.bundle.GetStringFromName(aName);
+  },
+
+  _loadDevices: function(requestURLs) {
+    debug("_loadDevices");
+
+    let deviceManager = Cc["@mozilla.org/presentation-device/manager;1"]
+                          .getService(Ci.nsIPresentationDeviceManager);
+    let devices = deviceManager.getAvailableDevices(requestURLs).QueryInterface(Ci.nsIArray);
+
+    // Re-load the available devices
+    this._devices = [];
+    for (let i = 0; i < devices.length; i++) {
+      let device = devices.queryElementAt(i, Ci.nsIPresentationDevice);
+      this._devices.push(device);
+    }
+  },
+
+  _getPromptMenu: function(aDevices) {
+    debug("_getPromptMenu");
+
+    return aDevices.map(function(device) {
+      return { label: device.name };
+    });
+  },
+
+  _getPrompt: function(aTitle, aMenu) {
+    debug("_getPrompt");
+
+    let p = new Prompt({
+      title: aTitle,
+    });
+
+    p.setSingleChoiceItems(aMenu);
+
+    return p;
+  },
+
+  _showPrompt: function(aPrompt, aCallback) {
+    debug("_showPrompt");
+
+    aPrompt.show(function(data) {
+      let buttonIndex = data.button;
+      aCallback(buttonIndex);
+    });
+  },
+
+  _selectDevice: function(aIndex) {
+    debug("_selectDevice");
+
+    if (!this._request) {
+      return;
+    }
+
+    if (aIndex < 0) {                    // Cancel request if no selected device,
+      this._request.cancel(Cr.NS_ERROR_DOM_NOT_ALLOWED_ERR);
+      return;
+    } else if (!this._devices.length) {  // or there is no available devices
+      this._request.cancel(Cr.NS_ERROR_DOM_NOT_FOUND_ERR);
+      return;
+    }
+
+    this._request.select(this._devices[aIndex]);
+  },
+
+  // This will be fired when window.PresentationRequest(URL).start() is called
+  promptDeviceSelection: function(aRequest) {
+    debug("promptDeviceSelection");
+
+    // Load available presentation devices into this._devices
+    this._loadDevices(aRequest.requestURLs);
+
+    if (!this._devices.length) { // Cancel request if no available device
+      aRequest.cancel(Cr.NS_ERROR_DOM_NOT_FOUND_ERR);
+      return;
+    }
+
+    this._request = aRequest;
+
+    let prompt = this._getPrompt(this._getString("deviceMenu.title"),
+                                 this._getPromptMenu(this._devices));
+
+    this._showPrompt(prompt, this._selectDevice.bind(this));
+
+    UITelemetry.addEvent("show.1", "dialog", null, "prompt_device_selection");
+  },
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PresentationDevicePrompt]);