Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
{
		IWorkbenchWindow window = PlatformUI.getWorkbench( )
				.getActiveWorkbenchWindow( );
		if ( window != null )
		{
			if ( activePageOnly )
			{
				IWorkbenchPage pg = window.getActivePage( );
				if ( pg != null )
				{
					return pg.getActiveEditor( );
				}
			}
			else
			{
				IWorkbenchPage[] pgs = window.getPages( );
				for ( int i = 0; i < pgs.length; i++ )
				{
					IWorkbenchPage pg = pgs[i];
					if ( pg != null )
					{
						IEditorPart editor = pg.getActiveEditor( );
						if ( editor != null )
						{
							return editor;
						}
					}
				}
			}
		}