| TreeViewer refresh. [message #284452] |
Mon, 25 April 2005 12:59  |
Eclipse User |
|
|
|
Originally posted by: wim.nospam.org
Hello All,
I have copied the plugin treeviewer example to adapt and tried to add a lazy
load to it with. I ended up in the expansion event allright but i could not
get the tree to refresh. Here is the relevant part of the code:
private Action treeExpandAction; // declaration
hookExpandAction(); // called from createPartControl
.... // part of the hookExpandAction method
viewer.addTreeListener(new ITreeViewerListener()
{
public void treeExpanded(TreeExpansionEvent arg0)
{
treeExpandAction.run();
....
The treeExpandAction.run starts with:
ISelection selection = viewer.getSelection();
Object obj = ((IStructuredSelection) selection)
.getFirstElement();
TreeParent tp = (TreeParent) obj;
Then i do actions to add new children to the TreeParent and tried many ways
of using refresh and update and add methods against the viewer in order to
have it refreshed. These actions all failed. I noticed that when i did
drilldown, the node was build okay, which lead me to doing this.
viewer.setInput(viewer.getInput());
viewer.expandToLevel(obj, 1);
since this happens in the drilldownadapter.
This is working. Is this correct?
viewer.refresh(tp);
leaves me with one empty node
Thanks for your time.
Wim
|
|
|
|
| Re: TreeViewer refresh. [message #284728 is a reply to message #284496] |
Fri, 29 April 2005 08:10  |
| Eclipse User |
|
|
|
Originally posted by: wim.nospam.org
viewer.setExpandedState(obj, true);
viewer.refresh(obj, false);
Did the trick.
(The Lord helps he who helps himself)
>> viewer.setInput(viewer.getInput());
>> viewer.expandToLevel(obj, 1);
>>
>> since this happens in the drilldownadapter.
>>
>> This is working. Is this correct?
Did only work in first glance
>>
>> viewer.refresh(tp);
>>
>> leaves me with one empty node
Because of the missing setExpandState()
"Wim Jongman" <wim@nospam.org> wrote in message
news:d4ljqb$qtb$1@news.eclipse.org...
> Let me simplify:
>
> viewer.refresh does no good when i add items in an treeExpanded event.
>
> but
>
> viewer.setInput(viewer.getInput());
> viewer.expandToLevel(obj, 1);
>
> works
>
> However, I don't have a good feeling about this approach. Can anybody
> help?
>
>
> "Wim Jongman" <wim@nospam.org> wrote in message
> news:d4j7mq$rsf$1@news.eclipse.org...
>> Hello All,
>>
>> I have copied the plugin treeviewer example to adapt and tried to add a
>> lazy load to it with. I ended up in the expansion event allright but i
>> could not get the tree to refresh. Here is the relevant part of the code:
>>
>>
>> private Action treeExpandAction; // declaration
>>
>> hookExpandAction(); // called from createPartControl
>>
>> ... // part of the hookExpandAction method
>>
>> viewer.addTreeListener(new ITreeViewerListener()
>> {
>> public void treeExpanded(TreeExpansionEvent arg0)
>> {
>> treeExpandAction.run();
>> ...
>>
>> The treeExpandAction.run starts with:
>>
>> ISelection selection = viewer.getSelection();
>> Object obj = ((IStructuredSelection) selection)
>> .getFirstElement();
>> TreeParent tp = (TreeParent) obj;
>>
>> Then i do actions to add new children to the TreeParent and tried many
>> ways of using refresh and update and add methods against the viewer in
>> order to have it refreshed. These actions all failed. I noticed that when
>> i did drilldown, the node was build okay, which lead me to doing this.
>>
>> viewer.setInput(viewer.getInput());
>> viewer.expandToLevel(obj, 1);
>>
>> since this happens in the drilldownadapter.
>>
>> This is working. Is this correct?
>>
>> viewer.refresh(tp);
>>
>> leaves me with one empty node
>>
>> Thanks for your time.
>>
>> Wim
>>
>>
>>
>
>
|
|
|
Powered by
FUDForum. Page generated in 0.06027 seconds
Home