- All Implemented Interfaces:
This concrete class was designed to be instantiated, but may also be subclassed if required.
The JFace frameworks contain classes that report property
change events for internal state changes that may be of interest
to external parties. A special listener interface
IPropertyChangeListener) is defined for this purpose,
and a typical class allow listeners to be registered via
PropertyChangeEventCreates a new property change event.
source- the object whose property has changed
property- the property that has changed (must not be
oldValue- the old value of the property, or
newValue- the new value of the property, or
getNewValuepublic Object getNewValue()Returns the new value of the property.
- the new value, or
nullif not known or not relevant (for instance if the property was removed).
getOldValuepublic Object getOldValue()Returns the old value of the property.
- the old value, or
nullif not known or not relevant (for instance if the property was just added and there was no old value).
getPropertypublic 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 ==.
- the name of the property that changed