[xtext-dev] How to provide custom IAllContainerState?

[Samantha Chan <chanskw@xxxxxxxxxx>]

Hi,

I am trying to provide a custom IAllContainerState
for my editor.

In my editor plugin, I have bound to
the StateBasedContainerManager:

        public
Class<? extends IContainer.Manager> bindIContainer$Manager() {
         
return StateBasedContainerManager.class;
        }

In my editor.ui plugin, I have tried
the following:
        public
Provider<IAllContainersState> provideIAllContainersState() {
         
return MySharedAccess.getCustomContainerState();
        }

MySharedAccess extends from Access and
provides the following method:

        public
static Provider<IAllContainersState> getCutomContainerState() {
         
      return Access.<IAllContainersState>provider(CustomContainerState.class);
        }

My container state is called, however
I don't think I am doing this correctly.  Whenever my editor is opened,
the CustomContainerState.doInitHandle(URI uri) is called. I did not expect
this to happen because I thought the results of the handle, and container
visibility is cached.  

I debugged this a bit, and found that
every time ContainerState.initHandle(uri) is called, a different instance
of my CustomContainerState is used.  I compared the result with the
default settings. In the case of the default settings, IAllContainersState
object is a singleton, and the same instance is used over and over again.

I could not quite figure out how to
set this up, can you provide some tips?

Thanks!
Samantha