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
currentEditPart = (TableEditPart) ( (TableCellEditPart) obj ).getParent( );
			}
			else if ( obj instanceof DummyEditpart )
			{
				continue;
			}
			if ( part == null )
			{
				part = currentEditPart;
			}
			
			if ( currentEditPart == null
					|| currentEditPart != null
					&& part != currentEditPart )
			{
				return null;
			}
		}
		
		if ( part instanceof GridEditPart )
			return null;
		return part;
	}
	/**
	 * Returns list editpart.
	 * 
	 * @param editParts
	 *            a list of editpart
	 * @return the current selected list editpart, null if no list editpart,
	 *         more than one list, or other list editpart. List band editpart is