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
* 
	 * @see org.eclipse.gef.EditPart#activate()
	 */
	public void activate( )
	{
		if ( isActive( ) )
			return;
		addModelListener( );
		super.activate( );
		refreshPageClip( );
		getFigure( ).addMouseMotionListener( new MouseMotionListener.Stub( ) {
			public void mouseEntered( MouseEvent me )
			{
				addGuideFeedBack( );
			}
			public void mouseExited( MouseEvent me )
			{
				delayRemoveGuideFeedBack( );
			}
			public void mouseHover( MouseEvent me )
			{
				addGuideFeedBack( );
			}
			public void mouseMoved( MouseEvent me )
			{
				addGuideFeedBack( );
			}
		} );
		getFigure( ).setFocusTraversable( true );
	}