DSL - How to use DesignVerbs with shapes?

Although I've previously wrote in this post about how you could add Menu Commands to shapes, I am still searching for alternative (maybe better?) approaches for exposing commands from my domain classes.

Why? Because the other way is too complex (too many steps) and I have many actions/commands.

Every time you click on a shape, a PropertyGrid is used to expose the ShapeProperties + DomainProperties (yes, they are merged in the PropertyGrid).

So, one natural approach would be to think "Why not add DesignVerbs as done for Custom Controls?". This question was asked in the msdn forum with null replied (until now ;) )

What I did was combined the idea from Geoff Appleby with a Custom partial class for each shape (off course only for the ones you need some special command/verb).

This is how the final solution looks like:

As you can see, "My Custom Action" and "Synchronize" are my exposed Actions/Commands. Here is the code that defines what to show:

public DesignerVerbCollection Verbs
{
get {
DesignerVerbCollection verbs = new DesignerVerbCollection();
verbs.Add( new DesignerVerb("My Custom Action", new EventHandler(ExecuteAction1) ));
verbs.Add(new DesignerVerb("Synchronize", new EventHandler(Synchronize)));
return verbs;
}
}

private void Synchronize(object sender, EventArgs e)
{
ExampleElement element = this.ModelElement as ExampleElement;
if ( element == null ) return;
MessageBox.Show("Action 1 was executed on model Element:" + element.Name);
}

Off course it's not only that since you need to also implement 2 interfaces:

public partial class ExampleShape : DslDiagrams::NodeShape, IComponent, IVerbsHost
{

private ISite _site;

public ISite Site
{
get
{
if (_site == null)
_site = new VerbSite(this, new VerbMenuCommandService(this));
return _site;
}
set { _site = value; }
}

public interface IVerbsHost { DesignerVerbCollection Verbs { get; }}

Drop me an e-mail if you are interested in the complete source code ( blogger does not have file upload i think.. need to check..)

TODO : Next I would like to combine both techniques be able to access this design verbs not only from the PropertyGrid but also from the Shape's right mouse and DSL Explorer.