org.eclipse.core.runtime
Class Preferences.PropertyChangeEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--org.eclipse.core.runtime.Preferences.PropertyChangeEvent

All Implemented Interfaces:

Serializable

Enclosing class:

Preferences

public static class Preferences.PropertyChangeEvent

extends EventObject

An event object describing a change to a named property.

The preferences object reports property change events for internal state changes that may be of interest to external parties. A special listener interface (Preferences.IPropertyChangeListener) is defined for this purpose. Listeners are registered via the Preferences.addPropertyChangeListener method.

Clients cannot instantiate or subclass this class.

See Also:

Preferences.addPropertyChangeListener(org.eclipse.core.runtime.Preferences.IPropertyChangeListener), #IPropertyChangeListener, Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Method Summary

Object	getNewValue() Returns the new value of the property.
Object	getOldValue() Returns the old value of the property.
String	getProperty() Returns the name of the property that changed.

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

Method Detail

getProperty

public String getProperty()

Returns the name of the property that changed.

Warning: there is no guarantee that the property name returned is a constant string. Callers must compare property names using equals, not ==.

Returns:

the name of the property that changed

getNewValue

public Object getNewValue()

Returns the new value of the property.

Returns:

the new value, or null if not known or not relevant

getOldValue

public Object getOldValue()

Returns the old value of the property.

Returns:

the old value, or null if not known or not relevant