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public interface SingleSelectionModel
A data model that is used in components that support at most one
selected element, like JTabbedPane
, JMenu
and
JPopupMenu
.
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. |
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. |
Method Detail |
---|
int getSelectedIndex()
-1
if there is no selection.
setSelectedIndex(int)
void setSelectedIndex(int index)
ChangeEvent
to all registered listeners.
index
- the index (use -1
to represent no selection).getSelectedIndex()
,
clearSelection()
void clearSelection()
-1
and
sends a ChangeEvent
to all registered listeners. If the selected
index is already -1
, this method does nothing.
boolean isSelected()
true
if there is a selection, and false
otherwise.
void addChangeListener(ChangeListener listener)
ChangeEvent
notifications from
this model whenever the selected index changes.
listener
- the listener to add.void removeChangeListener(ChangeListener listener)
ChangeEvent
notifications from this model.
listener
- the listener to remove.
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