I think this is handled by inheriting from NotificationObject. It is demonstrated in the samples in the link above. Try by building that out first and tinkering.
Here is a direct link to the ViewModel from the samples that shows how this works…
Everytime a new Node is added to the NodeModel the ViewModel registers that this has been changed and gets the nodes from the NodeModel which is then displayed in the WPF view.
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
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"; }
}
}
I kinda managed this but there is still some problem I need your help to solve.
Now the event is registered nicely when I open Dynamo and create a new project, however when I open existing project it stops working, any suggestions?
Should I register the events in Different place? Like a place where the NodeChanged event is triggered in all the workspaces ?
Current code below
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"; }
}
}
Do I need to dispose the events in the Dispose method or will Dynamo do that for me automatically?
If it is needed, should it be done like that?
Current code below
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"; }
}
}
Hey Jostein / Ricardo, wanna ping me an email/DM ? i’m working on a platform that does pretty much what @Ricardo.Farinha seems to be implementing below, would love to chat !
