Comments on: Eclipse CNF: Navigator Content Extensions

By: Writing an Eclipse Plug-in (Part 7): Creating a Custom Navigator « Hidden Clause

Sat, 24 Oct 2009 00:32:23 +0000

[...] Based on advice from Simon Zambrovski the CustomProjectWorkbenchRoot should not inherit from PlatformObject any more. Who am I to argue (if you like you can read up on at Simon’s site)? [...]

By: Miles Parker

Miles Parker — Thu, 24 Sep 2009 18:02:12 +0000

Sorry, should have said “The selection in one determines the *contents* of the other”. Note that that selection and content are not necessarily the same — this is why the content provider approach sounds nice. If in the prior example I could just get the selection of IContainer(s) as the root objects, then I could build the content tree up form that.

By: Miles Parker

Miles Parker — Thu, 24 Sep 2009 17:58:43 +0000

Hi Simon,

What I want is essentially a cascading set of CNF’s. The selection in one determines the selection in another. These should be dedicated to a particular type. So — this is a dumb example — let’s say you want to select a folder(s) or project(s) in project explorer. Then you might have a CNF displaying all of the Classes in that selected container in a flat display.

So I know that CNF is a selection provider but I want to wire one up as a selection listener as well. The results of a new selection need to then drive the input to the new view. As I say, I’m sure I can do this just using a View Part, but I think that folks are making a good argument for using CNF whenever possible.

By: Simon Zambrovski

Simon Zambrovski — Thu, 24 Sep 2009 09:28:27 +0000

I’m not sure I understand the question correctly. You want another view to display the selection made in CNF? CNF itself acts a selection provider, so the selection service approach is not very wrong.

If you want to show information selected in the project explorer, why do you need another view? Why don’t you just extend the project explorer (is a CNF too) and show your models directly there?

By: Miles Parker

Miles Parker — Thu, 24 Sep 2009 00:53:44 +0000

Really helpful article. I’m building a set of views that will allow user’s to view related information from views. For example, when a user selects a container in project explorer, I’d like to show all of the models that are contained in a certain resource type. But I’ve been having a hard time figuring out how to actually have the CNF view respond to the selection. I could do this of course using a custom view part and the selection service, but I’ve got to think there is a more correct way to do this with CNF. I tried manually wiring up the content provider as a selection listener, but that doesn’t seem quite right. Any hints / ideas?

By: Stephan

Stephan — Thu, 17 Sep 2009 09:23:54 +0000

Yes the question was not so clear.
I’d like to add styled label additions to elements from other contentproviders. Just like the revision number after a resource in the Eclipse resource view. Can I do that with the CNF?

By: Simon Zambrovski

Simon Zambrovski — Wed, 16 Sep 2009 20:33:42 +0000

I’m not sure, I got your question right. Could you explain it in more detail?

By: Stephan

Stephan — Tue, 15 Sep 2009 14:46:08 +0000

Thank you for the tutorial. This helped me a lot. Is there a way to add a type of label decorators based on the CNF.

The label decorators in 2.1 seem ot be activated by enablements and not core expressions.