com.jgoodies.binding.value
Class AbstractValueModel

java.lang.Object
  com.jgoodies.binding.beans.Model
      com.jgoodies.binding.value.AbstractValueModel

All Implemented Interfaces:

Observable, ValueModel, java.io.Serializable

Direct Known Subclasses:

AbstractConverter, AbstractVetoableValueModel, BeanAdapter.SimplePropertyAdapter, BufferedValueModel, ComponentValueModel, DelayedReadValueModel, PreferencesAdapter, PropertyAdapter, Trigger, ValueHolder

public abstract class AbstractValueModel
extends Model
implements ValueModel

An abstract class that minimizes the effort required to implement the ValueModel interface. It provides convenience methods to convert boolean, double, float, int, and long to their corresponding Object values and vice versa.

Subclasses must implement getValue() and setValue(Object) to get and set this model's value.

Version:

$Revision: 1.6 $

Author:

Karsten Lentzsch

See Also:

ExtendedPropertyChangeSupport, Serialized Form

Field Summary

static java.lang.String

PROPERTYNAME_VALUE The name of the bound property value.

Constructor Summary

AbstractValueModel()

Method Summary

void	addValueChangeListener(java.beans.PropertyChangeListener l) Registers the given PropertyChangeListener with this model.
boolean	booleanValue() Converts this model's value and returns it as a boolean.
double	doubleValue() Converts this model's value and returns it as a double.
void	fireValueChange(boolean oldValue, boolean newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(double oldValue, double newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(float oldValue, float newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(int oldValue, int newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(long oldValue, long newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(java.lang.Object oldValue, java.lang.Object newValue) Notifies all listeners that have registered interest for notification on this event type.
void	fireValueChange(java.lang.Object oldValue, java.lang.Object newValue, boolean checkIdentity) Notifies all listeners that have registered interest for notification on this event type.
float	floatValue() Converts this model's value and returns it as a float.
java.lang.String	getString() Converts this model's value and returns it as a String.
int	intValue() Converts this model's value and returns it as an int.
long	longValue() Converts this model's value and returns it as a long.
void	removeValueChangeListener(java.beans.PropertyChangeListener l) Removes the given PropertyChangeListener from the model.
void	setValue(boolean b) Converts the given boolean to a Boolean and sets it as new value.
void	setValue(double d) Converts the given double to a Double and sets it as new value.
void	setValue(float f) Converts the given float to a Float and sets it as new value.
void	setValue(int i) Converts the given int to an Integer and sets it as new value.
void	setValue(long l) Converts the given long to a Long and sets it as new value.
java.lang.String	toString() Returns a string representation of this value model.

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

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

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

getValue, setValue

Field Detail

PROPERTYNAME_VALUE

public static final java.lang.String PROPERTYNAME_VALUE

The name of the bound property value.

See Also:

Constant Field Values

Constructor Detail

AbstractValueModel

public AbstractValueModel()

Method Detail

addValueChangeListener

public final void addValueChangeListener(java.beans.PropertyChangeListener l)

Registers the given PropertyChangeListener with this model. The listener will be notified if the value has changed.

The PropertyChangeEvents delivered to the listener have the name set to "value". In other words, the listeners won't get notified when a PropertyChangeEvent is fired that has a null object as the name to indicate an arbitrary set of the event source's properties have changed.

In the rare case, where you want to notify a PropertyChangeListener even with PropertyChangeEvents that have no property name set, you can register the listener with #addPropertyChangeListener, not #addValueChangeListener.

Specified by:

addValueChangeListener in interface ValueModel

Parameters:

l - the listener to add

See Also:

ValueModel

removeValueChangeListener

public final void removeValueChangeListener(java.beans.PropertyChangeListener l)

Removes the given PropertyChangeListener from the model.

Specified by:

removeValueChangeListener in interface ValueModel

Parameters:

l - the listener to remove

fireValueChange

public final void fireValueChange(java.lang.Object oldValue,
                                  java.lang.Object newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the value before the change

newValue - the value after the change

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(java.lang.Object oldValue,
                                  java.lang.Object newValue,
                                  boolean checkIdentity)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

The boolean parameter specifies whether differences between the old and new value are tested using == or #equals.

Parameters:

oldValue - the value before the change

newValue - the value after the change

checkIdentity - true to compare the old and new value using ==, false to use #equals

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(boolean oldValue,
                                  boolean newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the boolean value before the change

newValue - the boolean value after the change

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(int oldValue,
                                  int newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the int value before the change

newValue - the int value after the change

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(long oldValue,
                                  long newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the long value before the change

newValue - the long value after the change

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(double oldValue,
                                  double newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the double value before the change

newValue - the double value after the change

See Also:

PropertyChangeSupport

fireValueChange

public final void fireValueChange(float oldValue,
                                  float newValue)

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

Parameters:

oldValue - the float value before the change

newValue - the float value after the change

See Also:

PropertyChangeSupport

booleanValue

public final boolean booleanValue()

Converts this model's value and returns it as a boolean.

Returns:

the boolean value

Throws:

java.lang.ClassCastException - if the observed value is not of type Boolean

java.lang.NullPointerException - if the value is null

doubleValue

public final double doubleValue()

Converts this model's value and returns it as a double.

Returns:

the double value

Throws:

java.lang.ClassCastException - if the observed value is not of type Double

java.lang.NullPointerException - if the value is null

floatValue

public final float floatValue()

Converts this model's value and returns it as a float.

Returns:

the float value

Throws:

java.lang.ClassCastException - if the observed value is not of type Float

java.lang.NullPointerException - if the value is null

intValue

public final int intValue()

Converts this model's value and returns it as an int.

Returns:

the int value

Throws:

java.lang.ClassCastException - if the observed value is not of type Integer

java.lang.NullPointerException - if the value is null

longValue

public final long longValue()

Converts this model's value and returns it as a long.

Returns:

the long value

Throws:

java.lang.ClassCastException - if the observed value is not of type Long

java.lang.NullPointerException - if the value is null

getString

public java.lang.String getString()

Converts this model's value and returns it as a String.

Returns:

this model's value as String

Throws:

java.lang.ClassCastException - if the observed value is not of type String

setValue

public final void setValue(boolean b)

Converts the given boolean to a Boolean and sets it as new value.

Parameters:

b - the value to be converted and set as new value

setValue

public final void setValue(double d)

Converts the given double to a Double and sets it as new value.

Parameters:

d - the value to be converted and set as new value

setValue

public final void setValue(float f)

Converts the given float to a Float and sets it as new value.

Parameters:

f - the value to be converted and set as new value

setValue

public final void setValue(int i)

Converts the given int to an Integer and sets it as new value.

Parameters:

i - the value to be converted and set as new value

setValue

public final void setValue(long l)

Converts the given long to a Long and sets it as new value.

Parameters:

l - the value to be converted and set as new value

toString

public java.lang.String toString()

Returns a string representation of this value model. Answers the print string of the observed value.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this value model