Código a ejecutar cuando un View se cierra

Cuando en tu Vista RCP, necesites realizar alguna acción, debes agregar un "disposeListener" 

public class View extends ViewPart {

public void createPartControl(Composite parent) {

// Method to listen when the View is Disposed and finishes the job

// as well as unsubscribe to EventBroker

// In this case I did not use ViewContentProvider.dispose() method

// because the code is taking care of the whole View Object

// instead the ContentProvider

parent.addDisposeListener(new DisposeListener() {

@Override

public void widgetDisposed(DisposeEvent e) {

// Canceling the current job

job.cancel();

// Unsubscribe from the event otherwise this view will

// still be listening to the event the next time it is opened

IEventBroker eventBroker = EventBroker.getInstance();

eventBroker.unsubscribe(eventHandler);

}

});

}

}

Saludos