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Content / Label provider in project explorer not refreshing with IResource.refreshLocal [message #1756394]

Thu, 16 March 2017 11:13

Jens Rabe

Messages: 81
Registered: September 2013

Member

I set up some custom navigatorContent with custom content and label provider. Basically, this puts a tree under files of a specific type. The content provider is a subtype of ObservableListTreeContentProvider. The file is EMF data, persisted as XMI, and I use a global EditingDomain with EMF Transaction.

I now have a custom editor for the files of that specific type, handling edits in the same editing domain as the content provider. When I save the file, I call IResource.refreshLocal on the corresponding IFile instance, which DOES cause the file to be refreshed (when I open the file in a standard text editor parallel to the custom one, I see the changes in the XMI file), but the project explorer is not refreshed. I have to press F5 here.

So how do I "press F5" programmatically?

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Re: Content / Label provider in project explorer not refreshing with IResource.refreshLocal [message #1756401 is a reply to message #1756394]

Thu, 16 March 2017 12:31

Jens Rabe

Messages: 81
Registered: September 2013

Member

I came up with this workaround which I execute after the save was successful (Scala):

getSite.
  getWorkbenchWindow.
  getPages.
  flatMap(_.getViewReferences).
  filter(_.getId.equals("org.eclipse.ui.navigator.ProjectExplorer")).
  map(_.getView(false)).
  filter(x => x != null).
  map(_.getSite).
  flatMap {
    case e: IEditorSite => Some(e.getActionBars)
    case v: IViewSite   => Some(v.getActionBars)
    case _              => None
  }.
  map(_.getGlobalActionHandler(REFRESH.getId)).
  filter(x => x != null).
  foreach(_.run)

So, what I basically do, is: I go through all currently open views, find the ones with the Project Explorer id, get their ActionBars, from these, get the global refresh command, and run it.

However, this looks a bit hackish, so is there a better way?

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Re: Content / Label provider in project explorer not refreshing with IResource.refreshLocal [message #1756422 is a reply to message #1756401]

Thu, 16 March 2017 16:17

Eclipse User

If you can get the active widget (e.g., SWTBot.tree() if the explorer's tree has focus), you can use #pressShortcut().

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Re: Content / Label provider in project explorer not refreshing with IResource.refreshLocal [message #1756448 is a reply to message #1756422]

Fri, 17 March 2017 05:21

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

It seems to me some aspect of notification is missing from your design/implementation. But looking at the class, I really have no idea how that is supposed to work. Certainly there appears to be various listeners attached. And surely a change to the model being used to provide the tree structure ought to directly inform the viewer about the updates. In fact, if you're using a shared editing domain, I imagine it should show the same tree/out as the editor and update as the editor changes it...

Ed Merks
Professional Support: https://www.macromodeling.com/

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