java.awt
Class CheckboxMenuItem
- Accessible, ItemSelectable, Serializable
This class implements a menu item that has a checkbox on it indicating
the selected state of some option.
CheckboxMenuItem()- Initializes a new instance of
CheckboxMenuItem with no
label and an initial state of off.
|
CheckboxMenuItem(String label)- Initializes a new instance of
CheckboxMenuItem with the
specified label and an initial state of off.
|
CheckboxMenuItem(String label, boolean state)- Initializes a new instance of
CheckboxMenuItem with the
specified label and initial state.
|
addActionListener, addNotify, deleteShortcut, disable, disableEvents, enable, enable, enableEvents, extends EventListener> T[] getListeners, getAccessibleContext, getActionCommand, getActionListeners, getLabel, getShortcut, isEnabled, paramString, processActionEvent, processEvent, removeActionListener, setActionCommand, setEnabled, setLabel, setShortcut |
dispatchEvent, getAccessibleContext, getFont, getName, getParent, getPeer, getTreeLock, paramString, postEvent, processEvent, removeNotify, setFont, setName, toString |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
CheckboxMenuItem
public CheckboxMenuItem()
Initializes a new instance of CheckboxMenuItem with no
label and an initial state of off.
CheckboxMenuItem
public CheckboxMenuItem(String label)
Initializes a new instance of CheckboxMenuItem with the
specified label and an initial state of off.
label - The label of the menu item.
CheckboxMenuItem
public CheckboxMenuItem(String label,
boolean state) Initializes a new instance of CheckboxMenuItem with the
specified label and initial state.
label - The label of the menu item.state - The initial state of the menu item, where true
is on, and false is off.
extends EventListener> T[] getListeners
public extends EventListener> T[] getListeners(Class listenerType)
Returns an array of all the objects currently registered as FooListeners
upon this CheckboxMenuItem. FooListeners are registered using
the addFooListener method.
- extends EventListener> T[] getListeners in interface MenuItem
ClassCastException - If listenerType doesn't specify a class or
interface that implements java.util.EventListener.
getItemListeners
public ItemListener[] getItemListeners()
Returns an aray of all item listeners currently registered to this
CheckBoxMenuItem.
getSelectedObjects
public Object[] getSelectedObjects()
Returns an array of length 1 with the menu item label for this object
if the state is on. Otherwise null is returned.
- getSelectedObjects in interface ItemSelectable
- An array with this menu item's label if it has a state of on,
or
null otherwise.
getState
public boolean getState()
Returns the state of this menu item.
- The state of this menu item.
processEvent
protected void processEvent(AWTEvent event)
Processes the specified event by calling processItemEvent()
if it is an instance of ItemEvent or calling the superclass
method otherwise.
- processEvent in interface MenuItem
event - The event to process.
processItemEvent
protected void processItemEvent(ItemEvent event)
Processes the specified event by dispatching it to any registered listeners.
event - The event to process.
setState
public void setState(boolean state)
Sets the state of this menu item.
state - The initial state of the menu item, where true
is on, and false is off.
CheckboxMenuItem.java -- A menu option with a checkbox on it.
Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
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