javax.swing
Class DefaultSingleSelectionModel

java.lang.Object
  javax.swing.DefaultSingleSelectionModel

All Implemented Interfaces:

Serializable, SingleSelectionModel

public class DefaultSingleSelectionModel

extends Object

implements SingleSelectionModel, Serializable

A generic implementation of SingleSelectionModel.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Author:

Dave Moore

See Also:

Serialized Form

Field Summary

protected ChangeEvent	changeEvent
private int	index
protected EventListenerList	listenerList The collection of registered listeners

Constructor Summary

DefaultSingleSelectionModel()

Method Summary

void	addChangeListener(ChangeListener l) Adds a ChangeListener to the button.
void	clearSelection() Clears the selection (to -1).
protected void	fireStateChanged() Notifies all listeners that have registered interest for notification on this event type.
ChangeListener[]	getChangeListeners() Returns an array of all the change listeners registered on this DefaultSingleSelectionModel.
EventListener[]	getListeners(Class listenerType) Returns an array of all the objects currently registered as FooListeners upon this model.
int	getSelectedIndex() Returns the model's selection.
boolean	isSelected() Returns true if the selection model currently has a selected value.
void	removeChangeListener(ChangeListener l) Removes a ChangeListener from the button.
void	setSelectedIndex(int index) Sets the model's selected index to index.

Methods inherited from class java.lang.Object

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

Field Detail

changeEvent

protected transient ChangeEvent changeEvent

listenerList

protected EventListenerList listenerList

The collection of registered listeners

index

private int index

Constructor Detail

DefaultSingleSelectionModel

public DefaultSingleSelectionModel()

Method Detail

getSelectedIndex

public int getSelectedIndex()

Description copied from interface: SingleSelectionModel

Returns the model's selection.

Specified by:

getSelectedIndex in interface SingleSelectionModel

Returns:

the model's selection, or -1 if there is no selection

See Also:

SingleSelectionModel.setSelectedIndex(int)

setSelectedIndex

public void setSelectedIndex(int index)

Description copied from interface: SingleSelectionModel

Sets the model's selected index to index. Notifies any listeners if the model changes

Specified by:

setSelectedIndex in interface SingleSelectionModel

Parameters:

index - an int specifying the model selection

See Also:

SingleSelectionModel.getSelectedIndex(), SingleSelectionModel.addChangeListener(javax.swing.event.ChangeListener)

clearSelection

public void clearSelection()

Description copied from interface: SingleSelectionModel

Clears the selection (to -1).

Specified by:

clearSelection in interface SingleSelectionModel

isSelected

public boolean isSelected()

Description copied from interface: SingleSelectionModel

Returns true if the selection model currently has a selected value.

Specified by:

isSelected in interface SingleSelectionModel

Returns:

true if a value is currently selected

addChangeListener

public void addChangeListener(ChangeListener l)

Adds a ChangeListener to the button.

Specified by:

addChangeListener in interface SingleSelectionModel

Parameters:

l - the ChangeListener to add

removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a ChangeListener from the button.

Specified by:

removeChangeListener in interface SingleSelectionModel

Parameters:

l - the ChangeListener to remove

getChangeListeners

public ChangeListener[] getChangeListeners()

Returns an array of all the change listeners registered on this DefaultSingleSelectionModel.

Returns:

all of this model's ChangeListeners or an empty array if no change listeners are currently registered

Since:

1.4

See Also:

addChangeListener(javax.swing.event.ChangeListener), removeChangeListener(javax.swing.event.ChangeListener)

fireStateChanged

protected void fireStateChanged()

Notifies all listeners that have registered interest for notification on this event type. The event instance is created lazily.

See Also:

EventListenerList

getListeners

public EventListener[] getListeners(Class listenerType)

Returns an array of all the objects currently registered as FooListeners upon this model. FooListeners are registered using the addFooListener method.

You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a DefaultSingleSelectionModel instance m for its change listeners with the following code:

ChangeListener[] cls = (ChangeListener[])(m.getListeners(ChangeListener.class));

If no such listeners exist, this method returns an empty array.

Parameters:

listenerType - the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener

Returns:

an array of all objects registered as FooListeners on this model, or an empty array if no such listeners have been added

Throws:

ClassCastException - if listenerType doesn't specify a class or interface that implements java.util.EventListener

Since:

1.3

See Also:

getChangeListeners()