javax.swing
Class DefaultSingleSelectionModel
- java.lang.Object
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- javax.swing.DefaultSingleSelectionModel
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- 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™ has been added to the
java.beanspackage. Please seeXMLEncoder.
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Field Summary
Fields Modifier and Type Field and Description protected ChangeEventchangeEventprotected EventListenerListlistenerListThe collection of registered listeners
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Constructor Summary
Constructors Constructor and Description DefaultSingleSelectionModel()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidaddChangeListener(ChangeListener l)Adds aChangeListenerto the button.voidclearSelection()Clears the selection (to -1).protected voidfireStateChanged()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 thisDefaultSingleSelectionModel.<T extends EventListener>
T[]getListeners(Class<T> listenerType)Returns an array of all the objects currently registered asFooListeners upon this model.intgetSelectedIndex()Returns the model's selection.booleanisSelected()Returns true if the selection model currently has a selected value.voidremoveChangeListener(ChangeListener l)Removes aChangeListenerfrom the button.voidsetSelectedIndex(int index)Sets the model's selected index to index.
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Field Detail
changeEvent
protected transient ChangeEvent changeEvent
listenerList
protected EventListenerList listenerList
The collection of registered listeners
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Method Detail
getSelectedIndex
public int getSelectedIndex()
Description copied from interface:SingleSelectionModelReturns the model's selection.- Specified by:
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getSelectedIndexin interfaceSingleSelectionModel - Returns:
- the model's selection, or -1 if there is no selection
- See Also:
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SingleSelectionModel.setSelectedIndex(int)
setSelectedIndex
public void setSelectedIndex(int index)
Description copied from interface:SingleSelectionModelSets the model's selected index to index. Notifies any listeners if the model changes- Specified by:
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setSelectedIndexin interfaceSingleSelectionModel - Parameters:
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index- an int specifying the model selection - See Also:
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SingleSelectionModel.getSelectedIndex(),SingleSelectionModel.addChangeListener(javax.swing.event.ChangeListener)
clearSelection
public void clearSelection()
Description copied from interface:SingleSelectionModelClears the selection (to -1).- Specified by:
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clearSelectionin interfaceSingleSelectionModel
isSelected
public boolean isSelected()
Description copied from interface:SingleSelectionModelReturns true if the selection model currently has a selected value.- Specified by:
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isSelectedin interfaceSingleSelectionModel - Returns:
- true if a value is currently selected
addChangeListener
public void addChangeListener(ChangeListener l)
Adds aChangeListenerto the button.- Specified by:
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addChangeListenerin interfaceSingleSelectionModel - Parameters:
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l- the ChangeListener to add
removeChangeListener
public void removeChangeListener(ChangeListener l)
Removes aChangeListenerfrom the button.- Specified by:
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removeChangeListenerin interfaceSingleSelectionModel - Parameters:
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l- the ChangeListener to remove
getChangeListeners
public ChangeListener[] getChangeListeners()
Returns an array of all the change listeners registered on thisDefaultSingleSelectionModel.- Returns:
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all of this model's
ChangeListeners or an empty array if no change listeners are currently registered - Since:
- 1.4
- See Also:
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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:
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EventListenerList
getListeners
public <T extends EventListener> T[] getListeners(Class<T> listenerType)
Returns an array of all the objects currently registered asFooListeners upon this model.FooListeners are registered using theaddFooListenermethod.You can specify the
listenerTypeargument with a class literal, such asFooListener.class. For example, you can query aDefaultSingleSelectionModelinstancemfor 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:
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listenerType- the type of listeners requested; this parameter should specify an interface that descends fromjava.util.EventListener - Returns:
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an array of all objects registered as
FooListeners on this model, or an empty array if no such listeners have been added - Throws:
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ClassCastException- iflistenerTypedoesn't specify a class or interface that implementsjava.util.EventListener - Since:
- 1.3
- See Also:
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getChangeListeners()
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