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java.awt
Class CheckboxMenuItem  

java.lang.Object
  java.awt.MenuComponent
      java.awt.MenuItem
          java.awt.CheckboxMenuItem

All Implemented Interfaces:

javax.accessibility.Accessible, ItemSelectable, java.io.Serializable

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public class CheckboxMenuItem

extends MenuItem

implements ItemSelectable, javax.accessibility.Accessible

This class implements a menu item that has a checkbox on it indicating the selected state of some option.

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Nested Class Summary
protected  class	CheckboxMenuItem.AccessibleAWTCheckboxMenuItem

 

Nested classes inherited from class java.awt.MenuItem

MenuItem.AccessibleAWTMenuItem

 

Nested classes inherited from class java.awt.MenuComponent

MenuComponent.AccessibleAWTMenuComponent

 

Field Summary
private  java.awt.event.ItemListener	item_listeners
private static long	serialVersionUID
private  boolean	state

 

Fields inherited from class java.awt.MenuItem

actionCommand, enabled, eventMask, label

 

Fields inherited from class java.awt.MenuComponent

accessibleContext, focusListener, parent, peer

 

Constructor Summary

CheckboxMenuItem()           Initializes a new instance of CheckboxMenuItem with no label and an initial state of off.

CheckboxMenuItem(java.lang.String label)           Initializes a new instance of CheckboxMenuItem with the specified label and an initial state of off.

CheckboxMenuItem(java.lang.String label, boolean state)           Initializes a new instance of CheckboxMenuItem with the specified label and initial state.

 

Method Summary
void	addItemListener(java.awt.event.ItemListener listener)           Adds the specified listener to the list of registered item listeners for this object.
void	addNotify()           Create's this object's native peer
(package private)  void	dispatchEventImpl(AWTEvent e)           Implementation of dispatchEvent.
javax.accessibility.AccessibleContext	getAccessibleContext()           Gets the AccessibleContext associated with this CheckboxMenuItem.
java.awt.event.ItemListener[]	getItemListeners()           Returns an aray of all item listeners currently registered to this CheckBoxMenuItem.
java.util.EventListener[]	getListeners(java.lang.Class listenerType)           Returns an array of all the objects currently registered as FooListeners upon this CheckboxMenuItem.
java.lang.Object[]	getSelectedObjects()           Returns an array of length 1 with the menu item label for this object if the state is on.
boolean	getState()           Returns the state of this menu item.
java.lang.String	paramString()           Returns a debugging string for this object.
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.
protected  void	processItemEvent(java.awt.event.ItemEvent event)           Processes the specified event by dispatching it to any registered listeners.
void	removeItemListener(java.awt.event.ItemListener listener)           Removes the specified listener from the list of registered item listeners for this object.
void	setState(boolean state)           Sets the state of this menu item.

 

Methods inherited from class java.awt.MenuItem

addActionListener, deleteShortcut, disable, disableEvents, enable, enable, enableEvents, getActionCommand, getActionListeners, getLabel, getShortcut, isEnabled, processActionEvent, removeActionListener, setActionCommand, setEnabled, setLabel, setShortcut

 

Methods inherited from class java.awt.MenuComponent

dispatchEvent, getFont, getName, getParent, getPeer, getToolkit, getTreeLock, postEvent, removeNotify, setFont, setName, setParent, setPeer, setTreeLock, toString

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

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state

private boolean state

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item_listeners

private transient java.awt.event.ItemListener item_listeners

Constructor Detail

CheckboxMenuItem

public CheckboxMenuItem()

Initializes a new instance of CheckboxMenuItem with no label and an initial state of off.

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CheckboxMenuItem

public CheckboxMenuItem(java.lang.String label)

Initializes a new instance of CheckboxMenuItem with the specified label and an initial state of off.

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CheckboxMenuItem

public CheckboxMenuItem(java.lang.String label,
                        boolean state)

Initializes a new instance of CheckboxMenuItem with the specified label and initial state.

Method Detail

getState

public boolean getState()

Returns the state of this menu item.

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setState

public void setState(boolean state)

Sets the state of this menu item.

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getSelectedObjects

public java.lang.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.

Specified by:

getSelectedObjects in interface ItemSelectable

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addNotify

public void addNotify()

Create's this object's native peer

Overrides:

addNotify in class MenuItem

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addItemListener

public void addItemListener(java.awt.event.ItemListener listener)

Adds the specified listener to the list of registered item listeners for this object.

Specified by:

addItemListener in interface ItemSelectable

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removeItemListener

public void removeItemListener(java.awt.event.ItemListener listener)

Removes the specified listener from the list of registered item listeners for this object.

Specified by:

removeItemListener in interface ItemSelectable

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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.

Overrides:

processEvent in class MenuItem

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processItemEvent

protected void processItemEvent(java.awt.event.ItemEvent event)

Processes the specified event by dispatching it to any registered listeners.

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dispatchEventImpl

void dispatchEventImpl(AWTEvent e)

Description copied from class: MenuComponent

Implementation of dispatchEvent. Allows trusted package classes to dispatch additional events first. This implementation first translates event to an AWT 1.0 event and sends the result to MenuComponent.postEvent(java.awt.Event) 55 . The event is then passed on to MenuComponent.processEvent(java.awt.AWTEvent) 55 for local processing.

Overrides:

dispatchEventImpl in class MenuItem

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paramString

public java.lang.String paramString()

Returns a debugging string for this object.

Overrides:

paramString in class MenuItem

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getListeners

public java.util.EventListener[] getListeners(java.lang.Class listenerType)

Returns an array of all the objects currently registered as FooListeners upon this CheckboxMenuItem. FooListeners are registered using the addFooListener method.

Overrides:

getListeners in class MenuItem

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getItemListeners

public java.awt.event.ItemListener[] getItemListeners()

Returns an aray of all item listeners currently registered to this CheckBoxMenuItem.

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getAccessibleContext

public javax.accessibility.AccessibleContext getAccessibleContext()

Gets the AccessibleContext associated with this CheckboxMenuItem. The context is created, if necessary.

Specified by:

getAccessibleContext in interface javax.accessibility.Accessible

Overrides:

getAccessibleContext in class MenuItem

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Home >> All >> java >> [ awt overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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