Package org.eclipse.core.databinding.observable.value

Class ValueChangeEvent<T>

  • Type Parameters:
    T - the type of value being observed
    All Implemented Interfaces:
    java.io.Serializable
    public class ValueChangeEvent<T>
extends ObservableEvent
    Value change event describing a change of an IObservableValue object's current value.
    Since:
    1.0
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      ValueDiff<T> diff
      Description of the change to the source observable value.

      • Fields inherited from class java.util.EventObject

        source

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected void dispatch​(IObservablesListener listener)
      Dispatch this event to the given listener.
      protected java.lang.Object getListenerType()
      Returns a unique object used for distinguishing this event type from others.
      IObservableValue<T> getObservableValue()
      Returns the observable value from which this event originated.

      • Methods inherited from class java.util.EventObject

        getSource, toString

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • diff

        public ValueDiff<T> diff
        Description of the change to the source observable value. Listeners must not change this field.

    • Constructor Detail

      • ValueChangeEvent

        public ValueChangeEvent​(IObservableValue<T> source,
                        ValueDiff<T> diff)
        Creates a new value change event.
        Parameters:
        source - the source observable value
        diff - the value change

    • Method Detail

      • getObservableValue

        public IObservableValue<T> getObservableValue()
        Returns the observable value from which this event originated.
        Returns:
        returns the observable value from which this event originated

      • dispatch

        protected void dispatch​(IObservablesListener listener)
        Description copied from class: ObservableEvent
        Dispatch this event to the given listener. Subclasses must implement this method by calling the appropriate type-safe event handling method on the given listener according to the type of this event.
        Specified by:
        dispatch in class ObservableEvent
        Parameters:
        listener - the listener that should handle the event

      • getListenerType

        protected java.lang.Object getListenerType()
        Description copied from class: ObservableEvent
        Returns a unique object used for distinguishing this event type from others.
        Specified by:
        getListenerType in class ObservableEvent
        Returns:
        a unique object representing the concrete type of this event.