ItemSelectable (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Ed. 5.0

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java.awt
Interface ItemSelectable

All Known Subinterfaces:: ButtonModel

All Known Implementing Classes:: AbstractButton, BasicArrowButton, Checkbox, CheckboxMenuItem, Choice, DefaultButtonModel, JButton, JCheckBox, JCheckBoxMenuItem, JComboBox, JMenu, JMenuItem, JRadioButton, JRadioButtonMenuItem, JToggleButton, JToggleButton.ToggleButtonModel, List, MetalComboBoxButton, MetalScrollButton

public interface ItemSelectable

The interface for objects which contain a set of items for which zero or more can be selected.

Method Summary

void addItemListener(ItemListener l)
          Adds a listener to receive item events when the state of an item is changed by the user.

Object[] getSelectedObjects()
          Returns the selected items or null if no items are selected.

void removeItemListener(ItemListener l)
          Removes an item listener.

Method Summary
`void`	`addItemListener(ItemListener l)` Adds a listener to receive item events when the state of an item is changed by the user.
`Object[]`	`getSelectedObjects()` Returns the selected items or `null` if no items are selected.
`void`	`removeItemListener(ItemListener l)` Removes an item listener.

Method Detail

getSelectedObjects

Object[] getSelectedObjects()

Returns the selected items or null if no items are selected.

addItemListener

void addItemListener(ItemListener l)

Adds a listener to receive item events when the state of an item is changed by the user. Item events are not sent when an item's state is set programmatically. If l is null, no exception is thrown and no action is performed.

Parameters:: l - the listener to receive events
See Also:: ItemEvent

removeItemListener

void removeItemListener(ItemListener l)

Removes an item listener. If l is null, no exception is thrown and no action is performed.

Parameters:: l - the listener being removed
See Also:: ItemEvent