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Lazy Loading / Paging [message #1009187]

Thu, 14 February 2013 11:15

Eclipse User

Hi
I am trying to implement paging/lazy loading in the Nattable.
We previously implemented a different version with our own datalayer/dataprovider that polled the server everytime a cell in a row, that wasn't loaded yet, was requested by the nattable.
The requirements changed and now we need to poll the server for the data at the visible indices everytime the viewport changes (i.e. when someone scrolls the table). Is there a way to do this?
I suppose with a datalayer/dataprovider it would be possible to find out when the viewport changes, because a new cell will be requested, but I don't know how to find out what rows are visible at that moment. Any ideas anyone? Smile

Thanks for your help,
Geraldine

Re: Lazy Loading / Paging [message #1009192 is a reply to message #1009187]

Thu, 14 February 2013 11:26

Eclipse User

Hi Geraldine,

as explained in here http://www.eclipse.org/forums/index.php/t/452182/ currently there is no nice way to implement such a behaviour. There is a refactoring of the viewport planned for 1.0.0 and there we'd like to consider some kind of viewport listeners. Until that there might be only workarounds I'm not aware of. Maybe some others have experience with that.

Greez,
Dirk

Re: Lazy Loading / Paging [message #1010820 is a reply to message #1009192]

Mon, 18 February 2013 04:48

Eclipse User

Thanks for the (incredibly fast Smile

) answer Dirk. I had seen that thread and was afraid the answer might still be the same. Do you know more about a possible release date for 1.0.0 yet?

Re: Lazy Loading / Paging [message #1010824 is a reply to message #1010820]

Mon, 18 February 2013 04:53

Eclipse User

As GlazedLists 1.9 is released now we are trying to release 1.0.0 at the end of March. There are still some open tasks we hopefully will be able to solve until then like:
- Update the Build to remove dependencies to local third-party-libraries
- Add a fully functional p2 update site
- Refactor the Viewport to support smooth scrolling and viewport events
- some bugfixes and smaller enhancements that are requested frequently

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