Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/ReportElementEditPart.java
clearGuideHandle( );
			getHandleLayer( ).add( guideHandle );
			guideHandle.invalidate( );
			guideHandle.setCanDeleteGuide( true );
		}
		else if ( guideHandle != null && guideHandle == findHandle( ) )
		{
			guideHandle.setCanDeleteGuide( false );
		}
		else if ( guideHandle != null )
		{
			guideHandle.setCanDeleteGuide( true );
		}
	}
	private AbstractGuideHandle findHandle( )
	{
		IFigure layer = getHandleLayer( );
		List list = layer.getChildren( );
		int size = list.size( );
		for ( int i = 0; i < size; i++ )
		{
			Object obj = list.get( i );
			if ( obj instanceof AbstractGuideHandle )
			{
				return (AbstractGuideHandle) obj;
			}
		}
		return null;
	}
	private void clearGuideHandle( )