Eclipse Community Forums: JFace » DeferredContentProvider with TreeViewer

Home » Eclipse Projects » JFace » DeferredContentProvider with TreeViewer(DeferredContentProvider with TreeViewer)

DeferredContentProvider with TreeViewer [message #669340]

Mon, 09 May 2011 20:58

Eclipse User

I have a TreeViewer, in which I am trying to limit the count to 500 for performance reasons. My research showed that the DeferredContentProvider seemed to be the way to go. My research said that I would need to set the viewer's input to a IConcurrentModel and that I would need the SWT.Virtual flag on my viewer. I've done both of these, and it is still not limiting the count of items in my viewer. Any suggestions would be greatly appreciated!

Re: DeferredContentProvider with TreeViewer [message #669390 is a reply to message #669340]

Tue, 10 May 2011 03:35

Eclipse User

Hey Elizabeth,

that could be done with a "virtual" tree viewer when using a lazy content provider. You'll find a nice code snippet there:
http://dev.eclipse.org/viewcvs/viewvc.cgi/org.eclipse.jface. snippets/Eclipse%20JFace%20Snippets/org/eclipse/jface/snippe ts/viewers/Snippet030VirtualLazyTableViewer.java?view=markup
(And by the way: the JFace snippets page is a great resource. http://wiki.eclipse.org/JFaceSnippets)

IIRC, the crucial parts are
MyContentProvider implements ILazyContentProvider
v = new TableViewer(shell, SWT.VIRTUAL); and
v.setUseHashlookup(true).

Best
Carsten

Previous Topic:	TableViewer setInput() questions
Next Topic:	Table Viewer - How to control the Page Up and Page Down behavior

Goto Forum:

-=] Back to Top [=-

Current Time: Thu Jul 24 10:42:16 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter