Re: Lazy initialisation of grid

Thread: Re: Lazy initialisation of grid

United States 2007-08-08 10:24:36

You need to call setItemCount. Tell the Grid how many items you want.

Regards,
-Chris

From:	"Jonathan Alvarsson" <jonathan.alvarssongmail.com>
To:	"Nebula Dev" <nebula-deveclipse.org>
Date:	08/08/2007 10:58 AM
Subject:	Re: [nebula-dev] Lazy initialisation of grid

On 8/8/07, Christopher J Gross <us.ibm.com>chris.gross

us.ibm.com> wrote:
>
> Hi Jonathan,
>
> It works for me. Can you explain further or provide a reproducible snippet? Did you pass SWT.VIRTUAL?
>
> Regards,
> -Chris
>

Yes here is a snippet of what I am trying to do. Probably I haven't quite figured out how to do it...
The handleEvent method never gets called. Shouldn't it be?

import org.eclipse.nebula.widgets.grid.Grid;
import org.eclipse.nebula.widgets.grid.GridColumn;
import org.eclipse.nebula.widgets.grid.GridItem;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout ;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class VirtualGridWidget {
public static void main(String... args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
 
Grid grid = new Grid( shell, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.VIRTUAL | SWT.MULTI );
grid.setHeaderVisible(true);
grid.setRowHeaderVisible(true);
grid.setCellSelectionEnabled(true);

grid.setItemHeight(20);
for (int i = 0; i < 10; i++) {

GridColumn column = new GridColumn(grid, SWT.NONE);
column.setText(i + "");
column.setWidth(40);
}

grid.addListener( SWT.SetData, new Listener() {
public void handleEvent(Event event) {
System.out.println("handleEvent()");
GridItem item = (GridItem)event.item;
for (int i = 0; i < 10; i++) {
item.setText(i, i + "");
item.setHeaderText( ('a'+i) + "" );
}
}
} );

shell.setSize(500, 200);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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