What is the event I need to subscribe so that it fires when user adds Nodes to canvas - C#

Developers
8

Hey guys,

I solved the previous problem.

Now I register also the CurrentWorkspaceChanged event and then inside that event I register then the NodeAdded.

It works well.

Still 2 questions for you experts:
Question 1:
Check my Dispose method below, I am disposing the CurrentWorkspaceChanged and then the multiple NodeAdded events to all the workspace models.
Is htis correct?
Do I even need to dispose of those? Doesnt Dynamo handle that for me?

Question 2:
In the Loaded function I need to call by hand the CurrentWorkspaceChanged event because it seems that at that time the first workspace is already loaded so if I dont do this hack it wouldnt work fine.
Is there a place where the workspace is “still loading” where I could register the CurrentWorkspaceChanged event so that i dont need this ugly extra codeline :slight_smile:

   public class SwecoNodeUsageStatisticsExtension : IViewExtension
   {
      private ReadyParams _readyParams;
      private string _dynamoVersion;

      public void Dispose()
      {
         _readyParams.CurrentWorkspaceChanged -= CurrentWorkspaceChanged;

         foreach (var workspaceModel in _readyParams.WorkspaceModels)
         {
            workspaceModel.NodeAdded -= CurrentWorkspaceModel_NodesChanged;
         }
      }

      public void Startup(ViewStartupParams p)
      {
         var version = p.DynamoVersion;
         _dynamoVersion = version.Major + "." + version.Minor + "."+ version.Build;
      }

      public void Loaded(ViewLoadedParams p)
      {
         _readyParams = p;

         _readyParams.CurrentWorkspaceChanged += CurrentWorkspaceChanged;

         // If this is not here if I create a new model in beggining events dont trigger
         CurrentWorkspaceChanged(_readyParams.CurrentWorkspaceModel);
      }

      private void CurrentWorkspaceChanged(IWorkspaceModel iWorkspaceModel)
      {
         iWorkspaceModel.NodeAdded += CurrentWorkspaceModel_NodesChanged;
      }

      private void CurrentWorkspaceModel_NodesChanged(NodeModel obj)
      {
         var nodesUsageCollector = new StatisticsCollector();
         nodesUsageCollector.Start(
            "Dynamo-DevTools",
            obj.NickName,
            obj.Category,
            obj.Category,
            obj.Description,
            "",
            "",
            _dynamoVersion,
            _readyParams.CurrentWorkspaceModel.Name.Replace("*", ""),
            _readyParams.CurrentWorkspaceModel.FileName
         );
         nodesUsageCollector.End();
      }

      public void Shutdown()
      {
      }

      public string UniqueId
      {
         get { return Guid.NewGuid().ToString(); }
      }

      public string Name
      {
         get { return "SwecoNodeUsageStatisticsExtension"; }
      }

   }