javax.swing

Class DefaultSingleSelectionModel

java.lang.Object

javax.swing.DefaultSingleSelectionModel

All Implemented Interfaces:

Serializable, SingleSelectionModel

public class DefaultSingleSelectionModel
extends Object
implements SingleSelectionModel, Serializable

The default implementation of SingleSelectionModel, used in JTabbedPane, JMenuBar and JPopupMenu.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected ChangeEvent	changeEvent changeEvent
protected EventListenerList	listenerList listenerList

Constructor Summary

Constructors

Constructor and Description
DefaultSingleSelectionModel() Creates a new DefaultSingleSelectionModel with no current selection.

Method Summary

Methods

Modifier and Type	Method and Description
void	addChangeListener(ChangeListener listener) Registers a listener to receive ChangeEvent notifications from this model whenever the selected index changes.
void	clearSelection() Clears the selection by setting the selected index to -1 and sends a ChangeEvent to all registered listeners.
protected void	fireStateChanged() fireStateChanged
ChangeListener[]	getChangeListeners() getChangeListeners
<T extends EventListener> T[]	getListeners(Class<T> listenerClass) getListeners
int	getSelectedIndex() Returns the selected index or -1 if there is no selection.
boolean	isSelected() Returns true if there is a selection, and false otherwise.
void	removeChangeListener(ChangeListener listener) Deregisters a listener so that it no longer receives ChangeEvent notifications from this model.
void	setSelectedIndex(int index) Sets the selected index and, if this is different to the previous selection, sends a ChangeEvent to all registered listeners.

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

changeEvent

listenerList

protected EventListenerList listenerList

listenerList

Constructor Detail

DefaultSingleSelectionModel

public DefaultSingleSelectionModel()

Creates a new DefaultSingleSelectionModel with no current selection.

Method Detail

getSelectedIndex

public int getSelectedIndex()

Returns the selected index or -1 if there is no selection.

Specified by:

getSelectedIndex in interface SingleSelectionModel

Returns:

The selected index.

See Also:

setSelectedIndex(int)

setSelectedIndex

public void setSelectedIndex(int index)

Sets the selected index and, if this is different to the previous selection, sends a ChangeEvent to all registered listeners.

Specified by:

setSelectedIndex in interface SingleSelectionModel

Parameters:

index - the index (use -1 to represent no selection).

See Also:

getSelectedIndex(), clearSelection()

clearSelection

public void clearSelection()

Clears the selection by setting the selected index to -1 and sends a ChangeEvent to all registered listeners. If the selected index is already -1, this method does nothing.

Specified by:

clearSelection in interface SingleSelectionModel

isSelected

public boolean isSelected()

Returns true if there is a selection, and false otherwise.

Specified by:

isSelected in interface SingleSelectionModel

Returns:

A boolean.

addChangeListener

public void addChangeListener(ChangeListener listener)

Registers a listener to receive ChangeEvent notifications from this model whenever the selected index changes.

Specified by:

addChangeListener in interface SingleSelectionModel

Parameters:

listener - the listener to add.

removeChangeListener

public void removeChangeListener(ChangeListener listener)

Deregisters a listener so that it no longer receives ChangeEvent notifications from this model.

Specified by:

removeChangeListener in interface SingleSelectionModel

Parameters:

listener - the listener to remove.

fireStateChanged

protected void fireStateChanged()

fireStateChanged

getListeners

public <T extends EventListener> T[] getListeners(Class<T> listenerClass)

getListeners

Parameters:

listenerClass - the type fo listener

Returns:

an array of listeners

Since:

1.3

getChangeListeners

public ChangeListener[] getChangeListeners()

getChangeListeners

Since:

1.4