* VRFS-3580 - empty windows shouldn't show

web/app/assets/javascripts/react-components/PopupMediaControls.js.jsx.coffee

@@ -18,6 +18,7 @@ if window.opener?
 if accessOpener
   SessionActions = window.opener.SessionActions
   MixerActions = window.opener.MixerActions
+  MixerStore = window.opener.MixerStore
   JamTrackActions = window.opener.JamTrackActions
   JamTrackMixdownActions = window.opener.JamTrackMixdownActions
   #JamTrackMixdownStore = window.opener.JamTrackMixdownStore
@@ -33,10 +34,8 @@ mixins.push(Reflux.listenTo(JamTrackStore, 'onJamTrackChanged'))
 
   mixins: mixins
 
-  onMixersChanged: (sessionMixers) ->
+  updateFromMixerHelper: (mixers, session) ->
 
-    session = sessionMixers.session
-    mixers = sessionMixers.mixers
 
     # the backend delete/adds the metronome rapidly when the user hits play. this is custom code to deal with that
 
@@ -51,15 +50,19 @@ mixins.push(Reflux.listenTo(JamTrackStore, 'onJamTrackChanged'))
       jamTrackName: mixers.jamTrackName()
       jamTrackMixdown: session.jamTrackMixdown()
 
-    @setState(media: state, downloadingJamTrack: session.downloadingJamTrack)
+    return {media: state, downloadingJamTrack: session.downloadingJamTrack}
+
+  onMixersChanged: (sessionMixers) ->
+    session = sessionMixers.session
+    mixers = sessionMixers.mixers
+
+    @setState(@updateFromMixerHelper(mixers, session))
+
 
   onMediaStateChanged: (changes) ->
     if changes.currentTimeChanged && @root?
       @setState({time: changes.time})
 
-  onJamTrackMixdownChanged: (changes) ->
-      @setState({mixdown: changes})
-
   onJamTrackChanged: (changes) ->
     logger.debug("PopupMediaControls: jamtrack changed", changes)
     @setState({jamTrackState: changes})
@@ -70,7 +73,15 @@ mixins.push(Reflux.listenTo(JamTrackStore, 'onJamTrackChanged'))
     SessionActions.showNativeMetronomeGui()
 
   getInitialState: () ->
-    {
+
+    if accessOpener
+
+      state = @updateFromMixerHelper(MixerStore.mixers, MixerStore.session)
+      state.jamTrackState = JamTrackStore.getState()
+      return state
+    else
+
+    return {
       media: @props.media,
       mixdown: @props.mixdown,
       jamTrackState: @props.jamTrackState,

web/app/assets/javascripts/react-components/helpers/MixerHelper.js.coffee

@@ -359,6 +359,10 @@ MIX_MODES = context.JK.MIX_MODES;
       else
         logger.debug("MixerHelper: full jamtrack is active")
 
+        if jamTrackMixers.length == 1
+          logger.warn("ignoring wrong amount of mixers for JamTrack in Full Track mode")
+          return _jamTracks
+
         for jamTrack in jamTracks
           mixer = null
           preMasteredClass = ""

web/app/assets/javascripts/react-components/stores/JamTrackStore.js.coffee

@@ -501,6 +501,8 @@ JamTrackActions = @JamTrackActions
 
     downloadFailureCallback: (errorMsg) ->
 
+      logger.debug("mixdown download failed", errorMsg);
+
       if @jamTrack?.activeMixdown?
         @jamTrack.activeMixdown.client_state = 'download_fail'
         @reportError(@jamTrack.activeMixdown)