Eclipse RAP Development Guide (Galileo) - SettingStoreEvent (Eclipse Rich Ajax Platform API Specification)

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Eclipse Rich Ajax Platform
Release 1.2

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org.eclipse.rwt.service
Class SettingStoreEvent


java.lang.Object
  

java.util.EventObject
      
org.eclipse.rwt.service.SettingStoreEvent

All Implemented Interfaces:: Serializable

public final class SettingStoreEvent
extends EventObject

A SettingStoreEvent holds information regarding the change of a single attribute inside the setting store. The change can be one of the following:

attribute added - getOldValue() returns null, getNewValue() returns a String other than null
attribute modified - getOldValue() and getNewValue() return a String other than null
attribute removed - getOldValue() returns a String other than null, getNewValue() returns null

Note: Clients are responsible for using the getAttributeName() method, to check if the changed attribute is of interest to them.

Since:: 1.1
See Also:: Serialized Form

Field Summary

Fields inherited from class java.util. EventObject

source

Constructor Summary

SettingStoreEvent ( ISettingStore source, String attribute, String oldValue, String newValue)


Method Summary

String getAttributeName ()
          Returns the name of the changed attribute.

String getNewValue ()
          Return the new value of the attribute

String getOldValue ()
          Returns the previous value of the attribute.

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

SettingStoreEvent

public SettingStoreEvent(
ISettingStore source,
                         
String attribute,
                         
String oldValue,
                         
String newValue)

Method Detail

getAttributeName

public 
String getAttributeName()

Returns the name of the changed attribute.

Returns:: a String; never null

getNewValue

public 
String getNewValue()

Return the new value of the attribute

Returns:: a String; may be null if the attribute has been removed from the store

getOldValue

public 
String getOldValue()

Returns the previous value of the attribute.

Returns:: a String; may be null if the attribute did not exist previously