Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/providers/SchematicContextMenuProvider.java
row = (RowHandle) getFirstElement( );
			}
			if ( !( row.getContainer( ) instanceof TableGroupHandle ) )
			{
				int slotID = row.getContainerSlotHandle( ).getSlotID( );
				menuManager.appendToGroup( group_name,
						InsertGroupActionFactory.createInsertGroupAction( slotID,
								getSelectedObjects( ) ) );
				return;
			}
		}
		if ( getFirstElement( ) instanceof SlotHandle )
		{
			DesignElementHandle container = ( (SlotHandle) getFirstElement( ) ).getElementHandle( );
			if ( !( container instanceof ListGroupHandle ) )
			{
				int slotID = ( (SlotHandle) getFirstElement( ) ).getSlotID( );
				menuManager.appendToGroup( group_name,
						InsertGroupActionFactory.createInsertGroupAction( slotID,
								getSelectedObjects( ) ) );
				return;
			}
		}
		MenuManager subMenu = new MenuManager( Messages.getString( "InsertGroupAction.actionMsg.group" ) ); 
		Action[] actions = InsertGroupActionFactory.getInsertGroupActions( getSelectedObjects( ) );
		for ( int i = 0; i < actions.length; i++ )
		{
			subMenu.add( actions[i] );
		}
		menuManager.appendToGroup( group_name, subMenu );