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java.lang.Objectjavax.swing.DefaultSingleSelectionModel
public class DefaultSingleSelectionModel
The default implementation of SingleSelectionModel
, used in
JTabbedPane
, JMenuBar
and JPopupMenu
.
Field Summary | |
---|---|
protected ChangeEvent |
changeEvent
changeEvent |
protected EventListenerList |
listenerList
listenerList |
Constructor Summary | |
---|---|
DefaultSingleSelectionModel()
Creates a new DefaultSingleSelectionModel with no current
selection. |
Method Summary | ||
---|---|---|
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 |
|
|
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 |
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protected transient ChangeEvent changeEvent
protected EventListenerList listenerList
Constructor Detail |
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public DefaultSingleSelectionModel()
DefaultSingleSelectionModel
with no current
selection.
Method Detail |
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public int getSelectedIndex()
-1
if there is no selection.
getSelectedIndex
in interface SingleSelectionModel
setSelectedIndex(int)
public void setSelectedIndex(int index)
ChangeEvent
to all registered listeners.
setSelectedIndex
in interface SingleSelectionModel
index
- the index (use -1
to represent no selection).getSelectedIndex()
,
clearSelection()
public void clearSelection()
-1
and
sends a ChangeEvent
to all registered listeners. If the selected
index is already -1
, this method does nothing.
clearSelection
in interface SingleSelectionModel
public boolean isSelected()
true
if there is a selection, and false
otherwise.
isSelected
in interface SingleSelectionModel
public void addChangeListener(ChangeListener listener)
ChangeEvent
notifications from
this model whenever the selected index changes.
addChangeListener
in interface SingleSelectionModel
listener
- the listener to add.public void removeChangeListener(ChangeListener listener)
ChangeEvent
notifications from this model.
removeChangeListener
in interface SingleSelectionModel
listener
- the listener to remove.protected void fireStateChanged()
public <T extends EventListener> T[] getListeners(Class<T> listenerClass)
listenerClass
- the type fo listener
public ChangeListener[] getChangeListeners()
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