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migrating from Ganymede to Galileo [message #549921]

Wed, 28 July 2010 13:25

David

Messages: 23
Registered: June 2010

Junior Member

Hello again,
Our PlugIn uses nebula grid and target platform ganymede (3.4.0).
Now we change target to galileo (3.5.2).
At first glance, everything works fine except one little thing:
The Method

Point[] getCellSelection()

in Grid.java has changed its behaviour.
With ganymede, the returned Point´s y value was always refered to the complete expanded grid.
Now it seems to depend on the expanded/collapsed state of previous rows.
What can have caused this change?
Is there a way to get the old behaviour?

regards,
David

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Re: migrating from Ganymede to Galileo [message #549952 is a reply to message #549921]

Wed, 28 July 2010 14:24

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

Well it's hard too tell with knowing which build (or better
CVS-Revision) of the Grid you've been using before. We have never
released stuff with Ganymede nor Galileo.

If you don't need new features of the latest build I think you could
still use the old version of grid.

Tom

Am 28.07.10 15:25, schrieb David:
> Hello again,
> Our PlugIn uses nebula grid and target platform ganymede (3.4.0).
> Now we change target to galileo (3.5.2).
> At first glance, everything works fine except one little thing:
> The Method Point[] getCellSelection() in Grid.java has changed its
> behaviour.
> With ganymede, the returned Point´s y value was always refered to the
> complete expanded grid.
> Now it seems to depend on the expanded/collapsed state of previous rows.
> What can have caused this change?
> Is there a way to get the old behaviour?
>
> regards,
> David

Report message to a moderator

Re: migrating from Ganymede to Galileo [message #550084 is a reply to message #549921]

Thu, 29 July 2010 06:05

David

Messages: 23
Registered: June 2010

Junior Member

The version of the nebula grid has not changed, only the target platform.
Sorry for not pointing that out.
Maybe some differences in SWT or JFace?

greetings,
David

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Re: migrating from Ganymede to Galileo [message #550126 is a reply to message #550084]

Thu, 29 July 2010 08:37

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

Well JFace-Viewers has always created the subitems lazily so if the
TreeItem hasn't been expanded yet no subitems are available (beside a
virtual one to show the expand icon).

Because you are still using the same Grid-Implementation I'm a bit
clueless on what's going wrong for you. What happens if you
expand/collapse the complete tree once, are the y-Values correct then?

Tom

Am 29.07.10 08:05, schrieb David:
> The version of the nebula grid has not changed, only the target platform.
> Sorry for not pointing that out.
> Maybe some differences in SWT or JFace?
>
> greetings,
> David

Report message to a moderator

Re: migrating from Ganymede to Galileo [message #550141 is a reply to message #550126]

Thu, 29 July 2010 09:32

David

Messages: 23
Registered: June 2010

Junior Member

Quote:

Well JFace-Viewers has always created the subitems lazily so if the
TreeItem hasn't been expanded yet no subitems are available (beside a
virtual one to show the expand icon).

That would explain why i get a NPE in my RowHeaderRenderer. The getData method from the given item does return null when i expand a row.
When i collapse/expand all, the value changes to something that makes no sense...
I was able to fix the wrong row coordinate by also getting the selected items, so the only problem now is the NullPointerException in the RowHeaderRenderer.

Many thanks so far,
David

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Re: migrating from Ganymede to Galileo [message #600084 is a reply to message #550126]

Thu, 29 July 2010 09:32

David

Messages: 23
Registered: June 2010

Junior Member

Quote:
> Well JFace-Viewers has always created the subitems lazily so if the
> TreeItem hasn't been expanded yet no subitems are available (beside a
> virtual one to show the expand icon).

That would explain why i get a NPE in my RowHeaderRenderer. The getData method from the given item does return null when i expand a row.
When i collapse/expand all, the value changes to something that makes no sense...
I was able to fix the wrong row coordinate by also getting the selected items, so the only problem now is the NullPointerException in the RowHeaderRenderer.

Many thanks so far,
David

Report message to a moderator

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