net.dpml.component
Class ContextEvent

java.lang.Object
  java.util.EventObject
      net.dpml.component.ContextEvent

All Implemented Interfaces:

Serializable

public class ContextEvent

extends EventObject

Event triggered as a result of change to the value of a context entry.

Version:

1.0.0

Author:

Digital Product Meta Library

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

ContextEvent(Provider source, String key, Object from, Object to)
Construct a new ContextEvent.

Method Summary

String	getKey() Return the feature name.
Object	getNewValue() Return the new value.
Object	getOldValue() Return the old value.
Provider	getProvider() Return the component model that initiating the event.

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

Constructor Detail

ContextEvent

public ContextEvent(Provider source,
                    String key,
                    Object from,
                    Object to)

Construct a new ContextEvent.

Parameters:

source - the source provider

key - the context entry key

from - the original value

to - the new value

Method Detail

getKey

public String getKey()

Return the feature name.

Returns:

the name of the modified feature

getOldValue

public Object getOldValue()

Return the old value.

Returns:

the original value

getNewValue

public Object getNewValue()

Return the new value.

Returns:

the new current value

getProvider

public Provider getProvider()

Return the component model that initiating the event.

Returns:

the source model