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Grid cell selection [message #755414]

Tue, 08 November 2011 07:07

Marcel A.
Messages: 106
Registered: July 2009

Senior Member

Hello,

i'm searching for a way to select and edit a single cell more effectively in a large grid. At the moment i use the standard snippet.

http://git.eclipse.org/c/platform/eclipse.platform.swt.git/tree/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet3.java

Is there an API availabe to restrict the search area to the visible grid in the canvas to speed up the search for the selected cell?

Any help is appreciated!

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Re: Grid cell selection [message #755428 is a reply to message #755414]

Tue, 08 November 2011 08:23

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

Hi,

I'm not sure what you are aiming at. Are you trying to say that
selection in Nebula Grid is to slow - please note Nebula-Grid natively
supports cells.

Tom

Am 08.11.11 13:07, schrieb Marcel:
> Hello,
>
> i'm searching for a way to select and edit a single cell more
> effectively in a large grid. At the moment i use the standard snippet.
>
> http://git.eclipse.org/c/platform/eclipse.platform.swt.git/tree/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet3.java
>
>
> Is there an API availabe to restrict the search area to the visible grid
> in the canvas to speed up the search for the selected cell?
>
> Any help is appreciated!

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Re: Grid cell selection [message #755433 is a reply to message #755428]

Tue, 08 November 2011 08:49

Marcel A.
Messages: 106
Registered: July 2009

Senior Member

Hello Tom,

sorry, but i sent the wrong link. At the moment i use a varied method based on this snippet (not the afore mentioned!):

http://www.java2s.com/Code/Java/SWT-JFace-Eclipse/editacellinaSWTtableinplacefancy.htm

If i have a large grid, e.g. 1000*1000 than it takes some time before i can edit the cell. So my question is this the best way to find and edit a cell in the grid component.

I addition the full selection (of all cells) also works very slow.

Maybee my Nebula grid version is to old (Nov. 2009)?

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Re: Grid cell selection [message #755435 is a reply to message #755433]

Tue, 08 November 2011 08:55

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

Well 1000 columns is a whole lot you can certainly turn of full
selection putting Grid into a cell selection mode.

I guess there nothing else beside reducing the amount of columns who are
the performance killer because 1000 rows is no problem at all.

Tom

Am 08.11.11 14:49, schrieb Marcel:
> Hello Tom,
>
> sorry, but i sent the wrong link. At the moment i use a varied method
> based on this snippet (not the afore mentioned!):
> http://www.java2s.com/Code/Java/SWT-JFace-Eclipse/editacellinaSWTtableinplacefancy.htm
>
>
> If i have a large grid, e.g. 1000*1000 than it takes some time before i
> can edit the cell. So my question is this the best way to find and edit
> a cell in the grid component.
>
> I addition the full selection (of all cells) also works very slow.
>
> Maybee my Nebula grid version is to old (Nov. 2009)?

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Re: Grid cell selection [message #755440 is a reply to message #755435]

Tue, 08 November 2011 09:21

Marcel A.
Messages: 106
Registered: July 2009

Senior Member

Hello Tom,

thanks for the answer.

Regards,

Marcel

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