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Class com.sun.java.swing.JMenuItem

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----com.sun.java.swing.JComponent
                           |
                           +----com.sun.java.swing.AbstractButton
                                   |
                                   +----com.sun.java.swing.JMenuItem

public class JMenuItem

extends AbstractButton

implements Accessible, MenuElement

For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JMenuItem key assignments.

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 Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.

See Also:

JPopupMenu, JMenu, JCheckBoxMenuItem, JRadioButtonMenuItem

JMenuItem()

Creates a menuItem with no set text or icon.

JMenuItem(Icon)

Creates a menuItem with an icon.

JMenuItem(String)

Creates a menuItem with text.

JMenuItem(String, Icon)

Creates a menuItem with the supplied text and icon.

JMenuItem(String, int)

Creates a menuItem with the specified text and keyboard mnemonic.

getAccelerator()

getAccessibleContext()

Get the AccessibleContext associated with this JComponent

getComponent()

This method returns the java.awt.Component used to paint this object.

getSubElements()

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

getUIClassID()

Returns the name of the L&F class that renders this component.

init(String, Icon)

Initialize the menu item with the specified text and icon.

isArmed()

Returns whether the menu item is "armed".

menuSelectionChanged(boolean)

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

processKeyEvent(KeyEvent, MenuElement[], MenuSelectionManager)

Implemented to be a MenuElement.

processMouseEvent(MouseEvent, MenuElement[], MenuSelectionManager)

Process a mouse event.

setAccelerator(KeyStroke)

setArmed(boolean)

Identifies the menu item as "armed".

setEnabled(boolean)

Enable or disable the menu item.

setUI(MenuItemUI)

Sets the L&F object that renders this component.

updateUI()

Notification from the UIFactory that the L&F has changed.

 public JMenuItem()

Creates a menuItem with no set text or icon.

 public JMenuItem(Icon icon)

Creates a menuItem with an icon.

Parameters:

icon - the icon of the MenuItem.

 public JMenuItem(String text)

Creates a menuItem with text.

Parameters:

text - the text of the MenuItem.

 public JMenuItem(String text,
                  Icon icon)

Creates a menuItem with the supplied text and icon.

Parameters:

text - the text of the MenuItem.

icon - the icon of the MenuItem.

 public JMenuItem(String text,
                  int mnemonic)

Creates a menuItem with the specified text and keyboard mnemonic.

Parameters:

text - the text of the MenuItem.

mnemonic - the keyboard mnemonic for the MenuItem

 protected void init(String text,
                     Icon icon)

Initialize the menu item with the specified text and icon.

Parameters:

text - the text of the MenuItem.

icon - the icon of the MenuItem.

Overrides:

init in class AbstractButton

 public void setUI(MenuItemUI ui)

Sets the L&F object that renders this component.

Parameters:

ui - the MenuItemUI L&F object

See Also:

getUI

 public void updateUI()

Notification from the UIFactory that the L&F has changed. Called to replace the UI with the latest version from the UIFactory.

Overrides:

updateUI in class AbstractButton

See Also:

updateUI

 public String getUIClassID()

Returns the name of the L&F class that renders this component.

Returns:

"MenuItemUI"

Overrides:

getUIClassID in class JComponent

See Also:

getUIClassID, getUI

 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

 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

 public void setEnabled(boolean b)

Enable or disable the menu item.

Parameters:

b - true to enable the item

Overrides:

setEnabled in class AbstractButton

 public void setAccelerator(KeyStroke keyStroke)

 public KeyStroke getAccelerator()

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

Process a mouse event. event is a MouseEvent with source being the receiving component. componentPath is the path of the receiving MenuElement in the menu hierarchy. manager is the MenuSelectionManager for the menu hierarchy. This method should process the MouseEvent and change 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

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

Implemented to be a MenuElement. This message is forwarded to the UI

 public void menuSelectionChanged(boolean isIncluded)

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

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:

setSelectedPath

 public MenuElement[] getSubElements()

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

Returns:

an array of MenuElements

 public Component getComponent()

This method 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.

Returns:

the Component that paints this menu item

 public AccessibleContext getAccessibleContext()

Get the AccessibleContext associated with this JComponent

Returns:

the AccessibleContext of this JComponent

Overrides:

getAccessibleContext in class JComponent

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