Module java.desktop
Package javax.swing

Class DefaultSingleSelectionModel

java.lang.Object
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 JavaBeans has been added to the java.beans package. Please see XMLEncoder.

Since:
1.2

  • Field Details

    • changeEvent

      protected transient ChangeEvent changeEvent
      Only one ModelChangeEvent is needed per model instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

    • listenerList

      protected EventListenerList listenerList
      The collection of registered listeners

  • Constructor Details

    • DefaultSingleSelectionModel

      public DefaultSingleSelectionModel()
      Constructs a DefaultSingleSelectionModel.

  • Method Details

    • getSelectedIndex

      public int getSelectedIndex()
      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:

    • setSelectedIndex

      public void setSelectedIndex(int index)
      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:

    • clearSelection

      public void clearSelection()
      Clears the selection (to -1).
      Specified by:
      clearSelection in interface SingleSelectionModel

    • isSelected

      public boolean isSelected()
      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:

    • 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:

    • 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.

      Type Parameters:
      T - the type of EventListener class being requested
      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: