Package org.eclipse.core.runtime.preferences

Class IEclipsePreferences.PreferenceChangeEvent

java.lang.Object

java.util.EventObject

org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent

All Implemented Interfaces:

Serializable

Enclosing interface:

IEclipsePreferences

public static final class IEclipsePreferences.PreferenceChangeEvent
extends EventObject

An event object describing the details of a change to a preference in the preference store.

Since:

3.0

See Also:

• IEclipsePreferences.IPreferenceChangeListener
• Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor	Description
PreferenceChangeEvent(Object node, String key, Object oldValue, Object newValue)	Constructor for a new preference change event.

Method Summary

Modifier and Type	Method	Description
String	getKey()	Return the key of the preference which was changed.
Object	getNewValue()	Return the new value for the preference encoded as a String, or null if the preference was removed.
Preferences	getNode()	Return the preference node on which the change occurred.
Object	getOldValue()	Return the old value for the preference encoded as a String, or null if the preference was removed or if it cannot be determined.

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 Details

PreferenceChangeEvent

public PreferenceChangeEvent(Object node,
 String key,
 Object oldValue,
 Object newValue)

Constructor for a new preference change event. The node and the key must not be null. The old and new preference values must be either a String or null.

Parameters:

node - the node on which the change occurred

key - the preference key

oldValue - the old preference value, as a String or null

newValue - the new preference value, as a String or null

Method Details

getNode

public Preferences getNode()

Return the preference node on which the change occurred. Must not be null.

Returns:

the node

getKey

public String getKey()

Return the key of the preference which was changed. Must not be null.

Returns:

the preference key

getNewValue

public Object getNewValue()

Return the new value for the preference encoded as a String, or null if the preference was removed.

Returns:

the new value or null

getOldValue

public Object getOldValue()

Return the old value for the preference encoded as a String, or null if the preference was removed or if it cannot be determined.

Returns:

the old value or null