All Implemented Interfaces:

Serializable

public class ChangeEvent
extends EventObject 

Since:

1.1

Author:

Thomas Down, Matthew Pocock, Greg Cox

See Also:

Serialized Form

• Field Summary

  • Fields inherited from class java.util.EventObject

    source

• Constructor Summary

  Constructors

  Constructor and Description
  ChangeEvent (Object source, ChangeType type) Construct a ChangeEvent with no change details.
  ChangeEvent (Object source, ChangeType type, Object change) Construct a ChangeEvent specifying a new value for a property, or an object to be added to a collection.
  ChangeEvent (Object source, ChangeType type, Object change, Object previous) Construct a ChangeEvent specifying a new value for a property, and giving the previous value.
  ChangeEvent (Object source, ChangeType type, Object change, Object previous, ChangeEvent chain) Construct a ChangeEvent to be fired because another ChangeEvent has been received from a property object.

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  ChangeEvent	getChainedEvent () Return the event which caused this to be fired, or null if this change was not caused by another event.
  Object	getChange () Return an object which is to be the new value of some property, or is to be added to a collection.
  Object	getPrevious () Return the old value of a property being changed.
  ChangeType	getType () Find the type of this event.
  String	toString ()

  • Methods inherited from class java.util.EventObject

    getSource

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • ChangeEvent

    public ChangeEvent(Object source,
     ChangeType type)

    Construct a ChangeEvent with no change details.

    Parameters:

    source - The object being changed.

    type - The type of change being made.

  • ChangeEvent

    public ChangeEvent(Object source,
     ChangeType type,
     Object change)

    Construct a ChangeEvent specifying a new value for a property, or an object to be added to a collection.

    Parameters:

    source - The object being changed.

    type - The type of change being made.

    change - The new value of the property being changed.

  • ChangeEvent

    public ChangeEvent(Object source,
     ChangeType type,
     Object change,
     Object previous)

    Construct a ChangeEvent specifying a new value for a property, and giving the previous value.

    Parameters:

    source - The object being changed.

    type - The type of change being made.

    change - The new value of the property being changed.

    previous - The old value of the property being changed.

  • ChangeEvent

    public ChangeEvent(Object source,
     ChangeType type,
     Object change,
     Object previous,
     ChangeEvent chain)

    Construct a ChangeEvent to be fired because another ChangeEvent has been received from a property object.

    Parameters:

    source - The object being changed.

    type - The type of change being made.

    change - The new value of the property being changed.

    previous - The old value of the property being changed.

    chain - The event which caused this event to be fired.

• Method Detail

  • getType

    public ChangeType getType()

    Find the type of this event.

    Returns:

    The Type value

  • getChange

    public Object getChange()

    Return an object which is to be the new value of some property, or is to be added to a collection. May return null is this is not meaningful.

    Returns:

    The Change value

  • getPrevious

    public Object getPrevious()

    Return the old value of a property being changed. May return null is this is not meaningful.

    Returns:

    The Previous value

  • getChainedEvent

    public ChangeEvent getChainedEvent()

    Return the event which caused this to be fired, or null if this change was not caused by another event.

    Returns:

    The ChainedEvent value

  • toString

    public String toString()

    Overrides:

    toString in class EventObject