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

Class ValueChangeEvent<T>

java.lang.Object

java.util.EventObject

org.eclipse.core.databinding.observable.ObservableEvent

org.eclipse.core.databinding.observable.value.ValueChangeEvent<T>

Type Parameters:

T - the type of value being observed

All Implemented Interfaces:

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

Constructor Summary

Constructors

Constructor	Description
ValueChangeEvent(IObservableValue<T> source, ValueDiff<T> diff)	Creates a new value change event.

Method Summary

Modifier and Type	Method	Description
protected void	dispatch(IObservablesListener listener)	Dispatch this event to the given listener.
protected 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 org.eclipse.core.databinding.observable.ObservableEvent

getObservable

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 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.