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Retain the expanded state of CNF TreeViewer using AdapterFactoryContentProvider [message #734661]

Sun, 09 October 2011 05:17

Nidhi

Messages: 92
Registered: December 2009

Member

Hi,

I had posted this before also but with no luck. Any pointers would be really helpful:

I am using CNF, and reusing the content provider from AdapterFactoryContentProvider. However adding or removing an element from the tree collapse the tree to the container of the node.
How can I retain the expanded state of the tree viewer.

Thanks a lot,
Best Regards,
Nidhi

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Re: Retain the expanded state of CNF TreeViewer using AdapterFactoryContentProvider [message #734833 is a reply to message #734661]

Mon, 10 October 2011 06:34

Ed Merks

Messages: 33141
Registered: July 2009

Senior Member

Nidhi,

I don't know much about CNF. Is it the loading and unloading of
resources that's causing it to collapse?

On 09/10/2011 7:17 AM, Nidhi wrote:
> Hi,
>
> I had posted this before also but with no luck. Any pointers would be
> really helpful:
>
> I am using CNF, and reusing the content provider from
> AdapterFactoryContentProvider. However adding or removing an element
> from the tree collapse the tree to the container of the node. How can
> I retain the expanded state of the tree viewer.
>
> Thanks a lot,
> Best Regards,
> Nidhi

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Retain the expanded state of CNF TreeViewer using AdapterFactoryContentProvider [message #734887 is a reply to message #734833]

Mon, 10 October 2011 09:55

saurav sarkar

Messages: 428
Registered: July 2009

Senior Member

Nidhi,

Generally in the case of tree viewers if the object ids dont match then the collapse happens.
For e.g. you call set expand on an object and then that object is actually not in the content provider's children list
then the tree will actually collapse.

Do you use some wrapper nodes ?

cheers,
Saurav

My Blog http://codifyit.blogspot.com/
Follow me: http://twitter.com/sauravs

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