Package org.eclipse.core.runtime

Interface Preferences.IPropertyChangeListener

All Superinterfaces:
EventListener
All Known Implementing Classes:
AntCorePreferences
Enclosing class:
Preferences
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface Preferences.IPropertyChangeListener extends EventListener
Listener for property changes.

Usage: 

 Preferences.IPropertyChangeListener listener =
   new Preferences.IPropertyChangeListener() {
      public void propertyChange(Preferences.PropertyChangeEvent event) {
         ... // code to deal with occurrence of property change
      }
   };
 emitter.addPropertyChangeListener(listener);
 ...
 emitter.removePropertyChangeListener(listener);

Note: Depending on the means in which the property values changed, the old and new values for the property can be either typed, a string representation of the value, or null. Clients who wish to behave properly in all cases should all three cases in their implementation of the property change listener.

  • Method Details

    • propertyChange

      void propertyChange(Preferences.PropertyChangeEvent event)
      Notification that a property has changed.

      This method gets called when the observed object fires a property change event.

      Parameters:
      event - the property change event object describing which property changed and how