[news.eclipse.platform.swt] Re: Overriding double-click auto expand on T

["Grant Gayed" <grant_gayed@xxxxxxxxxx>]

Hi Christophe,

If you add a DefaultSelection listener to the tree then double-clicks will
no longer auto-expand/collapse its items.  If there are some items that
should expand/collapse on double click and others that shouldn't then you
should add this listener and then invoke TreeItem.setExpanded(boolean) for
items that need it.

Grant


"Christophe Fondacci" <cfondacci@xxxxxxx> wrote in message
news:fhk6ck$2bh$1@xxxxxxxxxxxxxxxxxxxx
> Hello,
>
> On a basic SWT Tree widget, the default behaviour will automatically
expand
> TreeItem when the user double clicks on it. My problem is : I have a
double
> click listener and would like to allow TreeItem to expand or not depending
> on the selected item.
>
> I tried adding a listener on the SWT.MouseDoubleClick event and then
> controlling the Event.doit flag, but items are always expanding on double
> clicks.
>
> Actually, I would like the same behaviour as the "Package Explorer" view
of
> Eclipse GUI :
> When I double click on a java file, the file is opened in an editor and
the
> item remains unexpanded
> When I double click on a package, nothing is opened and the item is
expanded
> by the double click action.
>
> I would not like to control this behaviour by calling the setExpanded
method
> on the TreeItem after the autoexpand, I would really like to control it
> through events or properties.
>
> Is there a simple way to do this ?
> Thank you.
> Christophe.
>