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Where does TableViewer select an entry? [message #576937]

Tue, 01 June 2010 16:47

David Wynter

Messages: 4624
Registered: July 2009

Senior Member

Hi,

Having fun with e4 at the moment. Getting used to the event handling model is difficult as most of it is hidden from you.

The problem I have is that my equivalent of the ListView class in Contact demo does not re-select the current item in the list whenever one of my EventHandlers fires. I cannot see where in the Contacts demo it does this either. I always end up with no item selected in the list (TableViewer) after any EventHandler fires. Can someone point me where to intecept and restore the current selection in TableViewer?

Thx.

David

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Re: Where does TableViewer select an entry? [message #576966 is a reply to message #576937]

Wed, 02 June 2010 11:24

David Wynter

Messages: 4624
Registered: July 2009

Senior Member

I have also noticed that with my app based on the Contact demo code when I click in the detail view on the right hand side the highlight is removed from the selected element in the TableViewer on the left hand side.

In contacts demo app the focus moves when you click in the detail view, but the highlight on the selected element in the ListView remains, although it does change. How is this done, not obvious from the Contacts demo code.

Thx.

David

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Re: Where does TableViewer select an entry? [message #576986 is a reply to message #576937]

Wed, 02 June 2010 12:45

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

David Wynter wrote:
> Hi,
>
> Having fun with e4 at the moment. Getting used to the event handling
> model is difficult as most of it is hidden from you.

In the contacts demo, what event handling? The ListView has code that
posts its selection:

contactsViewer
.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
IStructuredSelection selection = (IStructuredSelection) event
.getSelection();
context.modify(IServiceConstants.SELECTION,
selection.getFirstElement());
}
});

the details view listens for a selection change:
@Inject
public void setSelection(@Optional @Named(IServiceConstants.SELECTION)
Contact contact) {...}

What event are you trying to feed back into the ListView? Where is it
coming from? What handling code did you write?

PW

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Paul Webster
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Paul Webster
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