com.jgoodies.binding.value
Class ConverterValueModel

java.lang.Object
  com.jgoodies.common.bean.Bean
      com.jgoodies.binding.beans.Model
          com.jgoodies.binding.value.AbstractValueModel
              com.jgoodies.binding.value.AbstractWrappedValueModel
                  com.jgoodies.binding.value.ConverterValueModel

All Implemented Interfaces:

ComponentModel, ComponentValueModel, ValueModel, com.jgoodies.common.bean.ObservableBean, com.jgoodies.common.bean.ObservableBean2, Serializable

public final class ConverterValueModel
extends AbstractWrappedValueModel

A ValueModel that converts the values of a wrapped ValueModel. The conversion is used when reading values, writing values, and in change notification.

More formally, a converting ValueModel VM1 converts the type T2 of an object being held as a value in one ValueModel VM2 into another type T1. When reading a value from VM1, instances of T2 are read from VM2 and are converted to T1. When storing a new value to VM1, the type converter will perform the inverse conversion and will convert an instance of T1 to T2.

Since:

2.7

Version:

$Revision: 1.15 $

Author:

Karsten Lentzsch

See Also:

ValueModel, Serialized Form

Field Summary

Fields inherited from class com.jgoodies.common.bean.Bean

changeSupport

Fields inherited from interface com.jgoodies.binding.value.ValueModel

PROPERTY_VALUE

Fields inherited from interface com.jgoodies.binding.value.ComponentModel

PROPERTY_EDITABLE, PROPERTY_ENABLED, PROPERTY_VISIBLE

Constructor Summary

ConverterValueModel(ValueModel source, BindingConverter converter)
Constructs a ConverterValueModel on the given source ValueModel and BindingConverter.

Method Summary

Object	convertFromSubject(Object sourceValue) Converts a value from the subject to the type or format used by this converter.
protected PropertyChangeListener	createValueChangeHandler()
Object	getValue() Converts the subject's value and returns the converted value.
void	setValue(Object targetValue) Sets a new value and notifies any registered value listeners if the value has changed.

Methods inherited from class com.jgoodies.binding.value.AbstractWrappedValueModel

getWrappee, isEditable, isEnabled, isVisible, release, setEditable, setEnabled, setVisible

Methods inherited from class com.jgoodies.binding.value.AbstractValueModel

addValueChangeListener, booleanValue, doubleValue, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, floatValue, getString, intValue, longValue, paramString, removeValueChangeListener, setValue, setValue, setValue, setValue, setValue, toString, valueString

Methods inherited from class com.jgoodies.binding.beans.Model

createPropertyChangeSupport, firePropertyChange

Methods inherited from class com.jgoodies.common.bean.Bean

addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, fireIndexedPropertyChange, fireIndexedPropertyChange, fireIndexedPropertyChange, fireMultiplePropertiesChanged, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.jgoodies.binding.value.ValueModel

addValueChangeListener, removeValueChangeListener

Methods inherited from interface com.jgoodies.common.bean.ObservableBean2

addPropertyChangeListener, getPropertyChangeListeners, getPropertyChangeListeners, removePropertyChangeListener

Methods inherited from interface com.jgoodies.common.bean.ObservableBean

addPropertyChangeListener, removePropertyChangeListener

Constructor Detail

ConverterValueModel

public ConverterValueModel(ValueModel source,
                           BindingConverter converter)

Constructs a ConverterValueModel on the given source ValueModel and BindingConverter.

Parameters:

source - the ValueModel that holds the source value

converter - converts source values to target values and vice versa

Throws:

NullPointerException - if source is null

Method Detail

convertFromSubject

public Object convertFromSubject(Object sourceValue)

Converts a value from the subject to the type or format used by this converter.

Parameters:

sourceValue - the source's value

Returns:

the converted value in the type or format used by this converter

setValue

public void setValue(Object targetValue)

Description copied from interface: ValueModel

Sets a new value and notifies any registered value listeners if the value has changed. In case of a read-only value implementors may choose to either reject this operation or to do nothing.

Parameters:

targetValue - the value to be set

getValue

public Object getValue()

Converts the subject's value and returns the converted value.

Returns:

the converted subject value

createValueChangeHandler

protected PropertyChangeListener createValueChangeHandler()

Specified by:

createValueChangeHandler in class AbstractWrappedValueModel