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/EditBindingAction.java
{
	public static final String ID = "org.eclipse.birt.report.designer.action.editBinding"; 
	/**
	 * @param part
	 */
	public EditBindingAction( IWorkbenchPart part )
	{
		super( part );
		setId( ID );
		setText( Messages.getString( "DesignerActionBarContributor.menu.element.editDataBinding" ) ); 
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled()