public class IJEventMulticaster
extends AWTEventMulticaster
implements DisplayChangeListener

Multicaster for events special to ImageJ

Example how to implement an object, which fires DisplayChangeEvents using the IJEventMulticaster:

 public mySpecialWindow extends StackWindow {

      DisplayChangeListener dclistener = null;

      public synchronized void addDisplayChangeListener(DisplayChangeListener l) {
          dclistener = IJEventMulticaster.add(dclistener, l);
      }

      public synchronized void removeDisplayChangeListener(DisplayChangeListener l) {
          dclistener = IJEventMulticaster.remove(dclistener, l);
      }

      public void myEventFiringMethod(arguments) {
          ... code ...
          if (dclistener != null) {
              DisplayChangeEvent dcEvent = new DisplayChangeEvent(this, DisplayChangeEvent.Z, zSlice);
              dclistener.displayChanged(dcEvent);
          }
          ... code ...
      }

      ... other methods ...
 }
 

To put in a new event-listener (by changing this class or extending it):

- Add the listener to the "implements" list.

- Add the methods of this listener to pass on the events (like displayChanged).

- Add the methods "add" and "remove" with the corresponding listener type.