Re: [nebula-dev] Lazy initialisation of grid

[Christopher J Gross <chris.gross@xxxxxxxxxx>]

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

Regards,
-Chris

From:	"Jonathan Alvarsson" <jonathan.alvarsson@xxxxxxxxx>
To:	"Nebula Dev" <nebula-dev@xxxxxxxxxxx>
Date:	08/08/2007 10:58 AM
Subject:	Re: [nebula-dev] Lazy initialisation of grid

---

On 8/8/07, Christopher J Gross <chris.gross@xxxxxxxxxx>
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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