* VRFS-3816 - tell user VST enable is coming in session

web/app/assets/javascripts/dialog/configureTrackDialog.js

@@ -223,7 +223,12 @@
       if (enableVstTimeout) {
         clearTimeout(enableVstTimeout)
       }
-      enableVstTimeout = setTimeout(function() { enableVst() }, 1000)
+      var isVstLoaded = context.jamClient.IsVstLoaded()
+      var hasVstAssignment = context.jamClient.hasVstAssignment()
+
+      if (hasVstAssignment && !isVstLoaded) {
+        enableVstTimeout = setTimeout(function() { enableVst() }, 1000)
+      }
     }
 
     function enableVst () {

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

@@ -17,6 +17,10 @@ ReactCSSTransitionGroup = React.addons.CSSTransitionGroup;
     content = null
     tracks = []
 
+    console.log("session?.preppingVstEnable", session?.preppingVstEnable)
+    if @state.session?.preppingVstEnable
+      delayVstEnable = `<div className="enable-vst-incoming">Enabling VSTs ... <div className="spinner-small"></div></div>`
+
     if @state.tracks.length > 0
       for track in @state.tracks
         track.mode = MIX_MODES.PERSONAL
@@ -38,6 +42,7 @@ ReactCSSTransitionGroup = React.addons.CSSTransitionGroup;
     `<div className="session-my-tracks">
       <h2>my live tracks</h2>
       <SessionTrackSettingsBtn />
+      {delayVstEnable}
       <div className="session-tracks-scroller">
         {content}
         <ReactCSSTransitionGroup transitionName="session-track-list" transitionAppear={true}>

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

@@ -2,12 +2,13 @@ context = window
 
 @SessionHelper = class SessionHelper
 
-  constructor: (app, session, participantsEverSeen, isRecording, downloadingJamTrack) ->
+  constructor: (app, session, participantsEverSeen, isRecording, downloadingJamTrack, preppingVstEnable) ->
     @app = app
     @session = session
     @participantsEverSeen = participantsEverSeen
     @isRecording = isRecording
     @downloadingJamTrack = downloadingJamTrack
+    @preppingVstEnable = preppingVstEnable
 
   inSession: () ->
     @session?

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

@@ -52,7 +52,7 @@ ConfigureTracksActions = @ConfigureTracksActions
       @sessionUtils = context.JK.SessionUtils
       @recordingModel = new context.JK.RecordingModel(@app, rest, context.jamClient);
       RecordingActions.initModel(@recordingModel)
-      @helper = new context.SessionHelper(@app, @currentSession, @participantsEverSeen, @isRecording, @downloadingJamTrack)
+      @helper = new context.SessionHelper(@app, @currentSession, @participantsEverSeen, @isRecording, @downloadingJamTrack, @enableVstTimeout?)
 
     onMixdownActive: (mixdown) ->
       if @currentSession?.jam_track?
@@ -63,7 +63,7 @@ ConfigureTracksActions = @ConfigureTracksActions
     onVideoChanged: (@videoState) ->
 
     issueChange: () ->
-      @helper = new context.SessionHelper(@app, @currentSession, @participantsEverSeen, @isRecording, @downloadingJamTrack)
+      @helper = new context.SessionHelper(@app, @currentSession, @participantsEverSeen, @isRecording, @downloadingJamTrack, @enableVstTimeout?)
       this.trigger(@helper)
 
     onWindowBackgrounded: () ->
@@ -774,10 +774,16 @@ ConfigureTracksActions = @ConfigureTracksActions
     delayEnableVst: () ->
       if @enableVstTimeout?
         clearTimeout(@enableVstTimeout)
+        @enableVstTimeout = null
 
-      @enableVstTimeout = setTimeout((() =>
-        @enableVst()
-      ), 5000)
+      isVstLoaded = context.jamClient.IsVstLoaded()
+      hasVstAssignment = context.jamClient.hasVstAssignment()
+
+      if hasVstAssignment && !isVstLoaded
+        @enableVstTimeout = setTimeout((() =>
+          @enableVst()
+        ), 5000)
+        @issueChange()
 
     enableVst: () ->
       @enableVstTimeout = null
@@ -786,6 +792,7 @@ ConfigureTracksActions = @ConfigureTracksActions
         ConfigureTracksActions.enableVst()
       else
         logger.debug("no longer in session; not enabling VSTs at this time")
+      @issueChange()
 
     watchBackendStats: () ->
       @backendStatsInterval = window.setInterval((() => (@updateBackendStats())), 1000)

web/app/assets/stylesheets/client/react-components/SessionScreen.css.scss

@@ -464,4 +464,19 @@ $session-screen-divider: 1190px;
       background-position: -14px 0;
     }
   }
+
+  .enable-vst-incoming {
+    position:absolute;
+    top:36px;
+    left:113px;
+    vertical-align: middle;
+    line-height: 32px;
+    height: 32px;
+
+    .spinner-small {
+      display: inline-block;
+      vertical-align: middle;
+      margin-top: -5px;
+    }
+  }
 }