Add desktopsharing error events with emitters

modules/desktopsharing/ScreenObtainer.js

@@ -1,5 +1,6 @@
 /* global config, APP, chrome, $, alert */
 /* jshint -W003 */
+var EventEmitter = require("events");
 var RTCBrowserType = require("../RTC/RTCBrowserType");
 var AdapterJS = require("../RTC/adapter.screenshare");
 var DesktopSharingEventTypes
@@ -32,6 +33,8 @@ var firefoxExtInstalled = null;
  */
 var reDetectFirefoxExtension = false;
 
+var eventEmitter = new EventEmitter();
+
 /**
  * Handles obtaining a stream from a screen capture on different browsers.
  */
@@ -182,9 +185,8 @@ function isUpdateRequired(minVersion, extVersion) {
         return false;
     }
     catch (e) {
+        eventEmitter.emit(DesktopSharingEventTypes.EXTENSION_VERSION_ERROR);
         console.error("Failed to parse extension version", e);
-        APP.UI.messageHandler.showError("dialog.error",
-            "dialog.detectext");
         return true;
     }
 }
@@ -280,10 +282,10 @@ function obtainScreenFromExtension(streamCallback, failCallback) {
                 }, 500);
             },
             function (arg) {
+                eventEmitter
+                  .emit(DesktopSharingEventTypes.EXTENSION_INSTALLATION_ERROR);
                 console.log("Failed to install the extension", arg);
                 failCallback(arg);
-                APP.UI.messageHandler.showError("dialog.error",
-                    "dialog.failtoinstall");
             }
         );
     }

modules/desktopsharing/desktopsharing.js

@@ -39,6 +39,7 @@ function newStreamCreated(stream) {
 }
 
 function getVideoStreamFailed(error) {
+    eventEmitter.emit(DesktopSharingEventTypes.VIDEOSTREAM_ERROR);
     console.error("Failed to obtain the stream to switch to", error);
     switchInProgress = false;
     isUsingScreenStream = false;
@@ -46,6 +47,7 @@ function getVideoStreamFailed(error) {
 }
 
 function getDesktopStreamFailed(error) {
+    eventEmitter.emit(DesktopSharingEventTypes.EXTENSION_STREAM_ERROR);
     console.error("Failed to obtain the stream to switch to", error);
     switchInProgress = false;
 }

service/desktopsharing/DesktopSharingEventTypes.js

@@ -9,7 +9,15 @@ var DesktopSharingEventTypes = {
      * An event which indicates that the jidesha extension for Firefox is
      * needed to proceed with screen sharing, and that it is not installed.
      */
-    FIREFOX_EXTENSION_NEEDED: "ds.firefox_extension_needed"
+    FIREFOX_EXTENSION_NEEDED: "ds.firefox_extension_needed",
+
+    EXTENSION_VERSION_ERROR: "ds.extesion_version_error",
+
+    EXTENSION_INSTALLATION_ERROR: "ds.extesion_installation_error",
+
+    EXTENSION_STREAM_ERROR: "ds.extesion_stream_error",
+
+    VIDEOSTREAM_ERROR: "ds.video_stream_error"
 };
 
-module.exports = DesktopSharingEventTypes;
+module.exports = DesktopSharingEventTypes;