com.jgoodies.binding.extras
Class NonNullValueModel
- Observable, Serializable, ValueModel
public final class NonNullValueModel
A
ValueModel implementation that avoids
null values.
It wraps another ValueModel and returns a (non-null) default value
if the wrapped ValueModel returns null.
Note that value change events fired by this model may use null
as old and/or new value. This is because PropertyChangeEvents use null
to indicate that the old and/or new value is not provided by the event.
Note: This class is not yet part of the binary Binding
library; it comes with the Binding distributions as an extra.
The API is work in progress and may change without notice;
this class may even be completely removed from future distributions.
If you want to use this class, you may consider copying it into
your code base.
Object | getValue()- Returns this model's current subject value.
|
void | setValue(Object newValue)- Sets the given value to the wrapped ValueModel.
|
String toString, addValueChangeListener, booleanValue, doubleValue, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, floatValue, getString, intValue, longValue, paramString, removeValueChangeListener, setValue, setValue, setValue, setValue, setValue, valueString |
addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, equals, fireIndexedPropertyChange, fireIndexedPropertyChange, fireIndexedPropertyChange, fireMultiplePropertiesChanged, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener |
NonNullValueModel
public NonNullValueModel(ValueModel subject,
Object defaultValue) Constructs an NonNullValueModel for the given ValueModel.
subject - the underlying (or wrapped) ValueModeldefaultValue - the value used whenever the wrapped model
returns null
getValue
public Object getValue()
Returns this model's current subject value.
- getValue in interface ValueModel
- this model's current subject value.
setValue
public void setValue(Object newValue)
Sets the given value to the wrapped ValueModel.
The value set can be null.
- setValue in interface ValueModel
newValue - the value to set
Copyright © 2002-2008 JGoodies Karsten Lentzsch. All Rights Reserved.