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/ApplyStyleAction.java
{
	
	public static final String ID = "ApplyStyleAction"; 
	private static final String STACK_MSG_APPLY_STYLE = Messages.getString( "ApplyStyleAction.stackMsg.applyStyle" ); 
	private SharedStyleHandle handle;
	private List selectionHandles;
	/**
	 * @param handle