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TreeViewer refresh collapses branches [message #438329]

Tue, 22 June 2004 12:18

Eclipse User

Originally posted by: ihazan.cablemx.com

Hi all ,
In my application sometimes(not always) when refreshing the treeviewer
(m_tv.refresh() ) , the tree gets collapsed,
how to prevent it.

Thanks a lot.

Regards,
Itzhak

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Re: TreeViewer refresh collapses branches [message #438330 is a reply to message #438329]

Tue, 22 June 2004 11:21

Henning Rogge

Messages: 148
Registered: July 2009

Senior Member

Itzhak Hazan wrote:

> Hi all ,
> In my application sometimes(not always) when refreshing the treeviewer
> (m_tv.refresh() ) , the tree gets collapsed,
> how to prevent it.

Try to call refresh only on the node that has to be refreshed.

tree.refresh(<node>);

Henning Rogge

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Re: TreeViewer refresh collapses branches [message #438332 is a reply to message #438330]

Tue, 22 June 2004 13:25

Eclipse User

Originally posted by: ihazan.cablemx.com

Thanks it works.

"Henning Rogge" <HRogge@gmx.net> wrote in message
news:cb94si$suf$1@eclipse.org...
> Itzhak Hazan wrote:
>
> > Hi all ,
> > In my application sometimes(not always) when refreshing the treeviewer
> > (m_tv.refresh() ) , the tree gets collapsed,
> > how to prevent it.
>
> Try to call refresh only on the node that has to be refreshed.
>
> tree.refresh(<node>);
>
> Henning Rogge

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Re: TreeViewer refresh collapses branches [message #438404 is a reply to message #438332]

Tue, 22 June 2004 18:28

Mark Melvin

Messages: 118
Registered: July 2009

Senior Member

Another option to preserve and restore state while refreshing the WHOLE
tree, here is an example of an update() method in one of my simple
outline views:

TreeViewer viewer= getTreeViewer();

if (viewer != null) {
Control control= viewer.getControl();
if (control != null && !control.isDisposed()) {
control.setRedraw(false);
Object[] expandedObjs = viewer.getExpandedElements();
// do whatever here... viewer.setInput(fInput);
viewer.setExpandedElements(expandedObjs);
control.setRedraw(true);
}
}

Mark.

Itzhak Hazan wrote:
> Thanks it works.
>
>
> "Henning Rogge" <HRogge@gmx.net> wrote in message
> news:cb94si$suf$1@eclipse.org...
>
>>Itzhak Hazan wrote:
>>
>>
>>>Hi all ,
>>>In my application sometimes(not always) when refreshing the treeviewer
>>>(m_tv.refresh() ) , the tree gets collapsed,
>>>how to prevent it.
>>
>>Try to call refresh only on the node that has to be refreshed.
>>
>>tree.refresh(<node>);
>>
>>Henning Rogge
>
>
>

Report message to a moderator

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