Bug 190957 The cancel button in group level dialog in cube take no effect[1101]
Description: The cancel button in group level dialog in cube take no effect[1101] Build number: 2.2.0.v20070605-0630 Steps to reproduce: 1, New a cube 2, New a level 3, Do some operations on the level 4, Click cancel button Expected result: The cancel button can take effect to cancel all the operations Actual result: The cancel button take no effect and all the operations have done
UI/org.eclipse.birt.report.designer.ui.cubebuilder/src/org/eclipse/birt/report/designer/ui/cubebuilder/page/CubeGroupContent.java
{
				MeasureGroupHandle measureGroup = (MeasureGroupHandle) obj;
				boolean hasExecuted = OlapUtil.enableDrop( measureGroup );
				if ( hasExecuted )
				{
					new DeleteCommand( measureGroup ).execute( );
				}
			}
			else if ( obj instanceof MeasureHandle )
			{
				MeasureHandle measure = (MeasureHandle) obj;
				boolean hasExecuted = OlapUtil.enableDrop( measure );
				if ( hasExecuted )
				{
					new DeleteCommand( measure ).execute( );
				}
			}
		}
		updateButtons( );
	}
	private void handleAddEvent( )
	{
		TreeSelection slections = (TreeSelection) groupViewer.getSelection( );
		Iterator iter = slections.iterator( );
		while ( iter.hasNext( ) )
		{
			Object obj = iter.next( );
			TreeSelection dataFields = (TreeSelection) dataFieldsViewer.getSelection( );
			Iterator iterator = dataFields.iterator( );
			ResultSetColumnHandle dataField = null;