Bug 166015 Refactor designer actions to eclipse command framework
Eclipse command framework provide a more explicit way to manage UI actions contributions, we can take it's advantage to make our actions code more clean and maintainable.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/parts/GraphicalEditorWithFlyoutPalette.java
* @param event
	 *            the selection changed event
	 * @return the created event
	 */
	private List convertEventToGFE( ReportRequest event )
	{
		if ( event.getSource( ) == getGraphicalViewer())
		{
			return null;
		}
		ArrayList tempList = new ArrayList( );
		List list = event.getSelectionModelList( );
		int size = list.size( );
		if ( size != 0 && list.get( 0 ) instanceof RowHandle )
		{
			
			RowHandle handle = (RowHandle) list.get( 0 );
			RowHandleAdapter adapter = HandleAdapterFactory.getInstance( )
					.getRowHandleAdapter( handle );
			Object tableParent = adapter.getTableParent( );
			if (tableParent == null)
			{
				return null;
			}
			TableEditPart part = (TableEditPart) getGraphicalViewer( ).getEditPartRegistry( )
					.get( tableParent );
			int[] selectRows = new int[]{
				adapter.getRowNumber( )
			};
			for ( int i = 1; i < size; i++ )