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/schematic/actions/MergeAction.java
{
	private static final String ACTION_MSG_MERGE = Messages.getString( "MergeAction.actionMsg.merge" ); 
	
	public static final String ID = "org.eclipse.birt.report.designer.internal.ui.editors.schematic.actions.Merge"; 
	/**
	 * Constructs new instance.
	 * 
	 * @param part
	 *            current work bench part
	 */
	public MergeAction( IWorkbenchPart part )
	{
		super( part );
		setId( ID );
		setText( ACTION_MSG_MERGE );
	}
	/*
	 * (non-Javadoc)