Added TRACK_NO_STREAM_FOUND JitsiTrackError type

JitsiTrackError.js

@@ -22,6 +22,8 @@ TRACK_ERROR_TO_MESSAGE_MAP[JitsiTrackErrors.CONSTRAINT_FAILED]
     = "Constraint could not be satisfied: ";
 TRACK_ERROR_TO_MESSAGE_MAP[JitsiTrackErrors.TRACK_IS_DISPOSED]
     = "Track has been already disposed";
+TRACK_ERROR_TO_MESSAGE_MAP[JitsiTrackErrors.TRACK_NO_STREAM_FOUND]
+    = "Track does not have an associated Media Stream";
 TRACK_ERROR_TO_MESSAGE_MAP[JitsiTrackErrors.TRACK_MUTE_UNMUTE_IN_PROGRESS]
     = "Track mute/unmute process is currently in progress";
 

JitsiTrackErrors.js

@@ -53,6 +53,10 @@ module.exports = {
      * be longer used.
      */
     TRACK_IS_DISPOSED: "track.track_is_disposed",
+    /**
+     * An error which indicates that track has no MediaStream associated.
+     */
+    TRACK_NO_STREAM_FOUND: "track.no_stream_found",
     /**
      * An error which indicates that track is currently in progress of muting or
      * unmuting itself.

doc/API.md

@@ -169,6 +169,7 @@ JitsiMeetJS.setLogLevel(JitsiMeetJS.logLevels.ERROR);
         - NOT_FOUND - getUserMedia-related error, indicates that requested device was not found.
         - CONSTRAINT_FAILED - getUserMedia-related error, indicates that some of requested constraints in getUserMedia call were not satisfied.
         - TRACK_IS_DISPOSED - an error which indicates that track has been already disposed and cannot be longer used.
+        - TRACK_NO_STREAM_FOUND - an error which indicates that track has no MediaStream associated.
         - TRACK_MUTE_UNMUTE_IN_PROGRESS - an error which indicates that track is currently in progress of muting or unmuting itself.
         - CHROME_EXTENSION_GENERIC_ERROR - generic error for jidesha extension for Chrome.
         - CHROME_EXTENSION_USER_CANCELED - an error which indicates that user canceled screen sharing window selection dialog in jidesha extension for Chrome.

modules/RTC/JitsiLocalTrack.js

@@ -225,8 +225,8 @@ JitsiLocalTrack.prototype._setMute = function (mute) {
                     });
 
                     if(!streamInfo) {
-                        // FIXME Introduce a new JitsiTrackError.
-                        throw new Error('track.no_stream_found');
+                        throw new JitsiTrackError(
+                            JitsiTrackErrors.TRACK_NO_STREAM_FOUND);
                     }else {
                         self.stream = streamInfo.stream;
                         self.track = streamInfo.track;