Module java.desktop

Package javax.swing

Class JMenuItem

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.AbstractButton

javax.swing.JMenuItem

All Implemented Interfaces:

ImageObserver, ItemSelectable, MenuContainer, Serializable, Accessible, MenuElement, SwingConstants

Direct Known Subclasses:

JCheckBoxMenuItem, JMenu, JRadioButtonMenuItem

@JavaBean(defaultProperty="UIClassID",
          description="An item which can be selected in a menu.")
public class JMenuItem
extends AbstractButton
implements Accessible, MenuElement

An implementation of an item in a menu. A menu item is essentially a button sitting in a list. When the user selects the "button", the action associated with the menu item is performed. A JMenuItem contained in a JPopupMenu performs exactly that function.

Menu items can be configured, and to some degree controlled, by Actions. Using an Action with a menu item has many benefits beyond directly configuring a menu item. Refer to Swing Components Supporting Action for more details, and you can find more information in How to Use Actions, a section in The Java Tutorial.

For further documentation and for examples, see How to Use Menus in The Java Tutorial.

Warning: Swing is not thread safe. For more information see Swing's Threading Policy.

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

See Also:

JPopupMenu, JMenu, JCheckBoxMenuItem, JRadioButtonMenuItem, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	JMenuItem.AccessibleJMenuItem	This class implements accessibility support for the JMenuItem class.

Nested classes/interfaces declared in class javax.swing.AbstractButton

AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener

Nested classes/interfaces declared in class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces declared in class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces declared in class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields declared in class javax.swing.AbstractButton

actionListener, BORDER_PAINTED_CHANGED_PROPERTY, changeEvent, changeListener, CONTENT_AREA_FILLED_CHANGED_PROPERTY, DISABLED_ICON_CHANGED_PROPERTY, DISABLED_SELECTED_ICON_CHANGED_PROPERTY, FOCUS_PAINTED_CHANGED_PROPERTY, HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY, HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY, ICON_CHANGED_PROPERTY, itemListener, MARGIN_CHANGED_PROPERTY, MNEMONIC_CHANGED_PROPERTY, model, MODEL_CHANGED_PROPERTY, PRESSED_ICON_CHANGED_PROPERTY, ROLLOVER_ENABLED_CHANGED_PROPERTY, ROLLOVER_ICON_CHANGED_PROPERTY, ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY, SELECTED_ICON_CHANGED_PROPERTY, TEXT_CHANGED_PROPERTY, VERTICAL_ALIGNMENT_CHANGED_PROPERTY, VERTICAL_TEXT_POSITION_CHANGED_PROPERTY

Fields declared in class javax.swing.JComponent

listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields declared in class java.awt.Component

accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields declared in interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Fields declared in interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

Constructors

Constructor	Description
JMenuItem()	Creates a JMenuItem with no set text or icon.
JMenuItem(String text)	Creates a JMenuItem with the specified text.
JMenuItem(String text, int mnemonic)	Creates a JMenuItem with the specified text and keyboard mnemonic.
JMenuItem(String text, Icon icon)	Creates a JMenuItem with the specified text and icon.
JMenuItem(Action a)	Creates a menu item whose properties are taken from the specified Action.
JMenuItem(Icon icon)	Creates a JMenuItem with the specified icon.

Method Summary

Modifier and Type	Method	Description
protected void	actionPropertyChanged(Action action, String propertyName)	Updates the button's state in response to property changes in the associated action.
void	addMenuDragMouseListener(MenuDragMouseListener l)	Adds a MenuDragMouseListener to the menu item.
void	addMenuKeyListener(MenuKeyListener l)	Adds a MenuKeyListener to the menu item.
protected void	configurePropertiesFromAction(Action a)	Sets the properties on this button to match those in the specified Action.
protected void	fireMenuDragMouseDragged(MenuDragMouseEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuDragMouseEntered(MenuDragMouseEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuDragMouseExited(MenuDragMouseEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuDragMouseReleased(MenuDragMouseEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuKeyPressed(MenuKeyEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuKeyReleased(MenuKeyEvent event)	Notifies all listeners that have registered interest for notification on this event type.
protected void	fireMenuKeyTyped(MenuKeyEvent event)	Notifies all listeners that have registered interest for notification on this event type.
KeyStroke	getAccelerator()	Returns the KeyStroke which serves as an accelerator for the menu item.
AccessibleContext	getAccessibleContext()	Returns the AccessibleContext associated with this JMenuItem.
Component	getComponent()	Returns the java.awt.Component used to paint this object.
MenuDragMouseListener[]	getMenuDragMouseListeners()	Returns an array of all the MenuDragMouseListeners added to this JMenuItem with addMenuDragMouseListener().
MenuKeyListener[]	getMenuKeyListeners()	Returns an array of all the MenuKeyListeners added to this JMenuItem with addMenuKeyListener().
MenuElement[]	getSubElements()	This method returns an array containing the sub-menu components for this menu component.
String	getUIClassID()	Returns the suffix used to construct the name of the L&F class used to render this component.
protected void	init(String text, Icon icon)	Initializes the menu item with the specified text and icon.
boolean	isArmed()	Returns whether the menu item is "armed".
void	menuSelectionChanged(boolean isIncluded)	Called by the MenuSelectionManager when the MenuElement is selected or unselected.
protected String	paramString()	Returns a string representation of this JMenuItem.
void	processKeyEvent(KeyEvent e, MenuElement[] path, MenuSelectionManager manager)	Processes a key event forwarded from the MenuSelectionManager and changes the menu selection, if necessary, by using MenuSelectionManager's API.
void	processMenuDragMouseEvent(MenuDragMouseEvent e)	Handles mouse drag in a menu.
void	processMenuKeyEvent(MenuKeyEvent e)	Handles a keystroke in a menu.
void	processMouseEvent(MouseEvent e, MenuElement[] path, MenuSelectionManager manager)	Processes a mouse event forwarded from the MenuSelectionManager and changes the menu selection, if necessary, by using the MenuSelectionManager's API.
void	removeMenuDragMouseListener(MenuDragMouseListener l)	Removes a MenuDragMouseListener from the menu item.
void	removeMenuKeyListener(MenuKeyListener l)	Removes a MenuKeyListener from the menu item.
void	setAccelerator(KeyStroke keyStroke)	Sets the key combination which invokes the menu item's action listeners without navigating the menu hierarchy.
void	setArmed(boolean b)	Identifies the menu item as "armed".
void	setEnabled(boolean b)	Enables or disables the menu item.
void	setUI(MenuItemUI ui)	Sets the look and feel object that renders this component.
void	updateUI()	Resets the UI property with a value from the current look and feel.

Methods declared in class javax.swing.AbstractButton

addActionListener, addChangeListener, addImpl, addItemListener, checkHorizontalKey, checkVerticalKey, createActionListener, createActionPropertyChangeListener, createChangeListener, createItemListener, doClick, doClick, fireActionPerformed, fireItemStateChanged, fireStateChanged, getAction, getActionCommand, getActionListeners, getChangeListeners, getDisabledIcon, getDisabledSelectedIcon, getDisplayedMnemonicIndex, getHideActionText, getHorizontalAlignment, getHorizontalTextPosition, getIcon, getIconTextGap, getItemListeners, getLabel, getMargin, getMnemonic, getModel, getMultiClickThreshhold, getPressedIcon, getRolloverIcon, getRolloverSelectedIcon, getSelectedIcon, getSelectedObjects, getText, getUI, getVerticalAlignment, getVerticalTextPosition, imageUpdate, isBorderPainted, isContentAreaFilled, isFocusPainted, isRolloverEnabled, isSelected, paintBorder, removeActionListener, removeChangeListener, removeItemListener, removeNotify, setAction, setActionCommand, setBorderPainted, setContentAreaFilled, setDisabledIcon, setDisabledSelectedIcon, setDisplayedMnemonicIndex, setFocusPainted, setHideActionText, setHorizontalAlignment, setHorizontalTextPosition, setIcon, setIconTextGap, setLabel, setLayout, setMargin, setMnemonic, setMnemonic, setModel, setMultiClickThreshhold, setPressedIcon, setRolloverEnabled, setRolloverIcon, setRolloverSelectedIcon, setSelected, setSelectedIcon, setText, setUI, setVerticalAlignment, setVerticalTextPosition

Methods declared in class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods declared in class java.awt.Container

add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, transferFocusDownCycle, validate, validateTree

Methods declared in class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods declared in class java.lang.Object

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

Constructor Detail

JMenuItem

public JMenuItem()

Creates a JMenuItem with no set text or icon.

JMenuItem

public JMenuItem(Icon icon)

Creates a JMenuItem with the specified icon.

Parameters:

icon - the icon of the JMenuItem

JMenuItem

public JMenuItem(String text)

Creates a JMenuItem with the specified text.

Parameters:

text - the text of the JMenuItem

JMenuItem

public JMenuItem(Action a)

Creates a menu item whose properties are taken from the specified Action.

Parameters:

a - the action of the JMenuItem

Since:

1.3

JMenuItem

public JMenuItem(String text,
                 Icon icon)

Creates a JMenuItem with the specified text and icon.

Parameters:

text - the text of the JMenuItem

icon - the icon of the JMenuItem

JMenuItem

public JMenuItem(String text,
                 int mnemonic)

Creates a JMenuItem with the specified text and keyboard mnemonic.

Parameters:

text - the text of the JMenuItem

mnemonic - the keyboard mnemonic for the JMenuItem

Method Detail

init

protected void init(String text,
                    Icon icon)

Initializes the menu item with the specified text and icon.

Overrides:

init in class AbstractButton

Parameters:

text - the text of the JMenuItem

icon - the icon of the JMenuItem

setUI

@BeanProperty(hidden=true,
              visualUpdate=true,
              description="The UI object that implements the LookAndFeel.")
public void setUI(MenuItemUI ui)

Sets the look and feel object that renders this component.

Parameters:

ui - the JMenuItemUI L&F object

See Also:

UIDefaults.getUI(javax.swing.JComponent)

updateUI

public void updateUI()

Resets the UI property with a value from the current look and feel.

Overrides:

updateUI in class AbstractButton

See Also:

JComponent.updateUI()

getUIClassID

@BeanProperty(bound=false)
public String getUIClassID()

Returns the suffix used to construct the name of the L&F class used to render this component.

Overrides:

getUIClassID in class JComponent

Returns:

the string "MenuItemUI"

See Also:

JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

setArmed

@BeanProperty(bound=false,
              hidden=true,
              description="Mouse release will fire an action event")
public void setArmed(boolean b)

Identifies the menu item as "armed". If the mouse button is released while it is over this item, the menu's action event will fire. If the mouse button is released elsewhere, the event will not fire and the menu item will be disarmed.

Parameters:

b - true to arm the menu item so it can be selected

isArmed

public boolean isArmed()

Returns whether the menu item is "armed".

Returns:

true if the menu item is armed, and it can be selected

See Also:

setArmed(boolean)

setEnabled

@BeanProperty(preferred=true,
              description="The enabled state of the component.")
public void setEnabled(boolean b)

Enables or disables the menu item.

Overrides:

setEnabled in class AbstractButton

Parameters:

b - true to enable the item

See Also:

Component.isEnabled(), Component.isLightweight()

setAccelerator

@BeanProperty(preferred=true,
              description="The keystroke combination which will invoke the JMenuItem\'s actionlisteners without navigating the menu hierarchy")
public void setAccelerator(KeyStroke keyStroke)

Sets the key combination which invokes the menu item's action listeners without navigating the menu hierarchy. It is the UI's responsibility to install the correct action. Note that when the keyboard accelerator is typed, it will work whether or not the menu is currently displayed.

Parameters:

keyStroke - the KeyStroke which will serve as an accelerator

getAccelerator

public KeyStroke getAccelerator()

Returns the KeyStroke which serves as an accelerator for the menu item.

Returns:

a KeyStroke object identifying the accelerator key

configurePropertiesFromAction

protected void configurePropertiesFromAction(Action a)

Sets the properties on this button to match those in the specified Action. Refer to Swing Components Supporting Action for more details as to which properties this sets.

Overrides:

configurePropertiesFromAction in class AbstractButton

Parameters:

a - the Action from which to get the properties, or null

Since:

1.3

See Also:

Action, AbstractButton.setAction(javax.swing.Action)

actionPropertyChanged

protected void actionPropertyChanged(Action action,
                                     String propertyName)

Updates the button's state in response to property changes in the associated action. This method is invoked from the PropertyChangeListener returned from createActionPropertyChangeListener. Subclasses do not normally need to invoke this. Subclasses that support additional Action properties should override this and configurePropertiesFromAction.

Refer to the table at Swing Components Supporting Action for a list of the properties this method sets.

Overrides:

actionPropertyChanged in class AbstractButton

Parameters:

action - the Action associated with this button

propertyName - the name of the property that changed

Since:

1.6

See Also:

Action, AbstractButton.configurePropertiesFromAction(javax.swing.Action)

processMouseEvent

public void processMouseEvent(MouseEvent e,
                              MenuElement[] path,
                              MenuSelectionManager manager)

Processes a mouse event forwarded from the MenuSelectionManager and changes the menu selection, if necessary, by using the MenuSelectionManager's API.

Note: you do not have to forward the event to sub-components. This is done automatically by the MenuSelectionManager.

Specified by:

processMouseEvent in interface MenuElement

Parameters:

e - a MouseEvent

path - the MenuElement path array

manager - the MenuSelectionManager

processKeyEvent

public void processKeyEvent(KeyEvent e,
                            MenuElement[] path,
                            MenuSelectionManager manager)

Processes a key event forwarded from the MenuSelectionManager and changes the menu selection, if necessary, by using MenuSelectionManager's API.

Note: you do not have to forward the event to sub-components. This is done automatically by the MenuSelectionManager.

Specified by:

processKeyEvent in interface MenuElement

Parameters:

e - a KeyEvent

path - the MenuElement path array

manager - the MenuSelectionManager

processMenuDragMouseEvent

public void processMenuDragMouseEvent(MenuDragMouseEvent e)

Handles mouse drag in a menu.

Parameters:

e - a MenuDragMouseEvent object

processMenuKeyEvent

public void processMenuKeyEvent(MenuKeyEvent e)

Handles a keystroke in a menu.

Parameters:

e - a MenuKeyEvent object

fireMenuDragMouseEntered

protected void fireMenuDragMouseEntered(MenuDragMouseEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuMouseDragEvent

See Also:

EventListenerList

fireMenuDragMouseExited

protected void fireMenuDragMouseExited(MenuDragMouseEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuDragMouseEvent

See Also:

EventListenerList

fireMenuDragMouseDragged

protected void fireMenuDragMouseDragged(MenuDragMouseEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuDragMouseEvent

See Also:

EventListenerList

fireMenuDragMouseReleased

protected void fireMenuDragMouseReleased(MenuDragMouseEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuDragMouseEvent

See Also:

EventListenerList

fireMenuKeyPressed

protected void fireMenuKeyPressed(MenuKeyEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuKeyEvent

See Also:

EventListenerList

fireMenuKeyReleased

protected void fireMenuKeyReleased(MenuKeyEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuKeyEvent

See Also:

EventListenerList

fireMenuKeyTyped

protected void fireMenuKeyTyped(MenuKeyEvent event)

Notifies all listeners that have registered interest for notification on this event type.

Parameters:

event - a MenuKeyEvent

See Also:

EventListenerList

menuSelectionChanged

public void menuSelectionChanged(boolean isIncluded)

Called by the MenuSelectionManager when the MenuElement is selected or unselected.

Specified by:

menuSelectionChanged in interface MenuElement

Parameters:

isIncluded - true if this menu item is on the part of the menu path that changed, false if this menu is part of the a menu path that changed, but this particular part of that path is still the same

See Also:

MenuSelectionManager.setSelectedPath(MenuElement[])

getSubElements

@BeanProperty(bound=false)
public MenuElement[] getSubElements()

This method returns an array containing the sub-menu components for this menu component.

Specified by:

getSubElements in interface MenuElement

Returns:

an array of MenuElements

getComponent

public Component getComponent()

Returns the java.awt.Component used to paint this object. The returned component will be used to convert events and detect if an event is inside a menu component.

Specified by:

getComponent in interface MenuElement

Returns:

the Component that paints this menu item

addMenuDragMouseListener

public void addMenuDragMouseListener(MenuDragMouseListener l)

Adds a MenuDragMouseListener to the menu item.

Parameters:

l - the MenuDragMouseListener to be added

removeMenuDragMouseListener

public void removeMenuDragMouseListener(MenuDragMouseListener l)

Removes a MenuDragMouseListener from the menu item.

Parameters:

l - the MenuDragMouseListener to be removed

getMenuDragMouseListeners

@BeanProperty(bound=false)
public MenuDragMouseListener[] getMenuDragMouseListeners()

Returns an array of all the MenuDragMouseListeners added to this JMenuItem with addMenuDragMouseListener().

Returns:

all of the MenuDragMouseListeners added or an empty array if no listeners have been added

Since:

1.4

addMenuKeyListener

public void addMenuKeyListener(MenuKeyListener l)

Adds a MenuKeyListener to the menu item.

Parameters:

l - the MenuKeyListener to be added

removeMenuKeyListener

public void removeMenuKeyListener(MenuKeyListener l)

Removes a MenuKeyListener from the menu item.

Parameters:

l - the MenuKeyListener to be removed

getMenuKeyListeners

@BeanProperty(bound=false)
public MenuKeyListener[] getMenuKeyListeners()

Returns an array of all the MenuKeyListeners added to this JMenuItem with addMenuKeyListener().

Returns:

all of the MenuKeyListeners added or an empty array if no listeners have been added

Since:

1.4

paramString

protected String paramString()

Returns a string representation of this JMenuItem. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:

paramString in class AbstractButton

Returns:

a string representation of this JMenuItem

getAccessibleContext

@BeanProperty(bound=false)
public AccessibleContext getAccessibleContext()

Returns the AccessibleContext associated with this JMenuItem. For JMenuItems, the AccessibleContext takes the form of an AccessibleJMenuItem. A new AccessibleJMenuItme instance is created if necessary.

Specified by:

getAccessibleContext in interface Accessible

Overrides:

getAccessibleContext in class Component

Returns:

an AccessibleJMenuItem that serves as the AccessibleContext of this JMenuItem