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/views/actions/CutAction.java
{
	private static final String DEFAULT_TEXT = Messages.getString( "CutAction.text" ); 
	/**
	 * Create a new cut action with given selection and default text
	 * 
	 * @param selectedObject
	 *            the selected object,which cannot be null
	 * 
	 */
	public CutAction( Object selectedObject )
	{
		this( selectedObject, DEFAULT_TEXT );
	}
	/**
	 * Create a new cut action with given selection and text
	 * 
	 * @param selectedObject
	 *            the selected object,which cannot be null