protected override IEnumerable GetChildren(TreeModelNode modelNode)
{
// dataValue is null when requesting root elements, we have only one
if (modelNode == null)
{
return new[] { myTypeElementEnvoy }
}
;
var envoy = modelNode.DataValue as IDeclaredElementEnvoy;
if (envoy == null)
{
return(EmptyArray <IDeclaredElementEnvoy> .Instance);
}
bool instanceVisible = envoy != myTypeElementEnvoy || myInstanceOnly;
IDeclaredElement declaredElement = envoy.GetValidDeclaredElement();
// Get type which is expanded for the node
var typeElement = declaredElement as ITypeElement;
if (typeElement == null)
{
var typeOwner = declaredElement as ITypeOwner;
if (typeOwner != null && !(typeOwner is IEvent))
{
typeElement = TypeInterfaceUtil.GetTypeElement(typeOwner.Type);
}
else
{
var method = declaredElement as IMethod;
if (method != null)
{
typeElement = TypeInterfaceUtil.GetTypeElement(method.ReturnType);
}
}
}
if (typeElement == null)
{
return(EmptyArray <DeclaredElementEnvoy <ITypeElement> > .Instance);
}
return(GetChildren(typeElement, instanceVisible));
}
// Quickly determine if node has children
// Can return true and then return no children, but not the opposite
protected override bool HasChildren(TreeModelNode modelNode)
{
// Get value associated with node
object dataValue = modelNode.DataValue;
if (dataValue == null)
{
return(true);
}
var envoy = dataValue as IDeclaredElementEnvoy;
if (envoy != null)
{
// Get type which will be expanded for the node
IDeclaredElement declaredElement = envoy.GetValidDeclaredElement();
var typeElement = declaredElement as ITypeElement;
if (typeElement == null)
{
var typeOwner = declaredElement as ITypeOwner;
if (typeOwner != null && !(typeOwner is IEvent))
{
typeElement = TypeInterfaceUtil.GetTypeElement(typeOwner.Type);
}
else
{
var method = declaredElement as IMethod;
if (method != null)
{
typeElement = TypeInterfaceUtil.GetTypeElement(method.ReturnType);
}
}
}
// Type cannot be determined (or void)
if (typeElement == null)
{
return(false);
}
// Do we have members for type?
return(!typeElement.GetMembers().IsEmpty());
}
return(false);
}
public void Execute(IDataContext context, DelegateExecute nextExecute)
{
// Get solution from context in which action is executed
ISolution solution = context.GetData(ProjectModel.DataContext.DataConstants.SOLUTION);
if (solution == null)
{
return;
}
// Get PsiManager for solution, from which we will obtain code elements
var services = solution.GetPsiServices();
if (!services.PsiManager.AllDocumentsAreCommited)
{
return;
}
using (CommitCookie caches = CommitCookie.Commit(solution).WaitForCaches(this))
{
if (caches.Cancelled)
{
return;
}
bool instanceOnly;
ITypeElement typeElement = TypeInterfaceUtil.GetTypeElement(context, out instanceOnly);
if (typeElement == null)
{
MessageBox.ShowExclamation("Cannot get type from current location", "Explore Type Interface");
return;
}
// Create descriptor and ask TreeModelBrowser to show it in the HierarchyResults view.
// Same view, where type hierarchy is shown
var descriptor = new TypeInterfaceDescriptor(typeElement, instanceOnly);
var windowRegistrar = solution.GetComponent <TypeInterfaceToolWindowRegistrar>();
windowRegistrar.Show(descriptor);
}
}