Java™ Platform
Standard Ed. 6

javax.swing
Class DefaultSingleSelectionModel

java.lang.Object
  extended by 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 JavaBeansTM has been added to the java.beans package. Please see XMLEncoder.


Field Summary
protected  ChangeEvent changeEvent
           
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.
<T extends EventListener>
T[]
getListeners(Class<T> 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

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

Java™ Platform
Standard Ed. 6

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