Class BasicMenuUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ButtonUI

javax.swing.plaf.MenuItemUI

javax.swing.plaf.basic.BasicMenuItemUI

javax.swing.plaf.basic.BasicMenuUI

Direct Known Subclasses:

SynthMenuUI

public class BasicMenuUI
extends BasicMenuItemUI

A default L&F implementation of MenuUI. This implementation is a "combined" view/controller.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	BasicMenuUI.ChangeHandler	As of Java 2 platform 1.4, this previously undocumented class is now obsolete.
protected class	BasicMenuUI.MouseInputHandler	Instantiated and used by a menu item to handle the current menu selection from mouse events.

Field Summary

Fields

Modifier and Type	Field	Description
protected ChangeListener	changeListener	The instance of ChangeListener.
protected MenuListener	menuListener	The instance of MenuListener.

Fields inherited from class BasicMenuItemUI

acceleratorDelimiter, acceleratorFont, acceleratorForeground, acceleratorSelectionForeground, arrowIcon, checkIcon, defaultTextIconGap, disabledForeground, menuDragMouseListener, menuItem, menuKeyListener, mouseInputListener, oldBorderPainted, propertyChangeListener, selectionBackground, selectionForeground

Constructor Summary

Constructors

Constructor	Description
BasicMenuUI()	Constructs a BasicMenuUI.

Method Summary

Modifier and Type	Method	Description
protected ChangeListener	createChangeListener(JComponent c)	Returns an instance of ChangeListener.
protected MenuDragMouseListener	createMenuDragMouseListener(JComponent c)	Returns an instance of MenuDragMouseListener.
protected MenuKeyListener	createMenuKeyListener(JComponent c)	Returns an instance of MenuKeyListener.
protected MenuListener	createMenuListener(JComponent c)	Returns an instance of MenuListener.
protected MouseInputListener	createMouseInputListener(JComponent c)	Returns an instance of MouseInputListener.
protected PropertyChangeListener	createPropertyChangeListener(JComponent c)	Creates a PropertyChangeListener which will be added to the menu item.
static ComponentUI	createUI(JComponent x)	Constructs a new instance of BasicMenuUI.
Dimension	getMaximumSize(JComponent c)	Returns the specified component's maximum size appropriate for the look and feel.
Dimension	getMinimumSize(JComponent c)	Returns the specified component's minimum size appropriate for the look and feel.
protected String	getPropertyPrefix()	Returns a property prefix.
protected void	installDefaults()	Installs default properties.
protected void	installKeyboardActions()	Registers keyboard action.
protected void	installListeners()	Registers listeners.
protected void	setupPostTimer(JMenu menu)	Sets timer to the menu.
protected void	uninstallDefaults()	Uninstalls default properties.
protected void	uninstallKeyboardActions()	Unregisters keyboard actions.
protected void	uninstallListeners()	Unregisters listeners.

Methods inherited from class BasicMenuItemUI

doClick, getPath, getPreferredMenuItemSize, getPreferredSize, installComponents, installUI, paint, paintBackground, paintMenuItem, paintText, uninstallComponents, uninstallUI, update

Methods inherited from class ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior

Methods inherited from class Object

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

Field Details

changeListener

protected ChangeListener changeListener

The instance of ChangeListener.

menuListener

protected MenuListener menuListener

The instance of MenuListener.

Constructor Details

BasicMenuUI

public BasicMenuUI()

Constructs a BasicMenuUI.

Method Details

createUI

public static ComponentUI createUI(JComponent x)

Constructs a new instance of BasicMenuUI.

Parameters:

x - a component

Returns:

a new instance of BasicMenuUI

installDefaults

protected void installDefaults()

Description copied from class: BasicMenuItemUI

Installs default properties.

Overrides:

installDefaults in class BasicMenuItemUI

getPropertyPrefix

protected String getPropertyPrefix()

Description copied from class: BasicMenuItemUI

Returns a property prefix.

Overrides:

getPropertyPrefix in class BasicMenuItemUI

Returns:

a property prefix

installListeners

protected void installListeners()

Description copied from class: BasicMenuItemUI

Registers listeners.

Overrides:

installListeners in class BasicMenuItemUI

installKeyboardActions

protected void installKeyboardActions()

Description copied from class: BasicMenuItemUI

Registers keyboard action.

Overrides:

installKeyboardActions in class BasicMenuItemUI

uninstallKeyboardActions

protected void uninstallKeyboardActions()

Description copied from class: BasicMenuItemUI

Unregisters keyboard actions.

Overrides:

uninstallKeyboardActions in class BasicMenuItemUI

createMouseInputListener

protected MouseInputListener createMouseInputListener(JComponent c)

Description copied from class: BasicMenuItemUI

Returns an instance of MouseInputListener.

Overrides:

createMouseInputListener in class BasicMenuItemUI

Parameters:

c - a component

Returns:

an instance of MouseInputListener

createMenuListener

protected MenuListener createMenuListener(JComponent c)

Returns an instance of MenuListener.

Parameters:

c - a component

Returns:

an instance of MenuListener

createChangeListener

protected ChangeListener createChangeListener(JComponent c)

Returns an instance of ChangeListener.

Parameters:

c - a component

Returns:

an instance of ChangeListener

createPropertyChangeListener

protected PropertyChangeListener createPropertyChangeListener(JComponent c)

Description copied from class: BasicMenuItemUI

Creates a PropertyChangeListener which will be added to the menu item. If this method returns null then it will not be added to the menu item.

Overrides:

createPropertyChangeListener in class BasicMenuItemUI

Parameters:

c - a component

Returns:

an instance of a PropertyChangeListener or null

uninstallDefaults

protected void uninstallDefaults()

Description copied from class: BasicMenuItemUI

Uninstalls default properties.

Overrides:

uninstallDefaults in class BasicMenuItemUI

uninstallListeners

protected void uninstallListeners()

Description copied from class: BasicMenuItemUI

Unregisters listeners.

Overrides:

uninstallListeners in class BasicMenuItemUI

createMenuDragMouseListener

protected MenuDragMouseListener createMenuDragMouseListener(JComponent c)

Description copied from class: BasicMenuItemUI

Returns an instance of MenuDragMouseListener.

Overrides:

createMenuDragMouseListener in class BasicMenuItemUI

Parameters:

c - a component

Returns:

an instance of MenuDragMouseListener

createMenuKeyListener

protected MenuKeyListener createMenuKeyListener(JComponent c)

Description copied from class: BasicMenuItemUI

Returns an instance of MenuKeyListener.

Overrides:

createMenuKeyListener in class BasicMenuItemUI

Parameters:

c - a component

Returns:

an instance of MenuKeyListener

getMinimumSize

public Dimension getMinimumSize(JComponent c)

Description copied from class: ComponentUI

Returns the specified component's minimum size appropriate for the look and feel. If null is returned, the minimum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize and returns that value.

Overrides:

getMinimumSize in class BasicMenuItemUI

Parameters:

c - the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

• JComponent.getMinimumSize()
• LayoutManager.minimumLayoutSize(Container)
• ComponentUI.getPreferredSize(JComponent)

getMaximumSize

public Dimension getMaximumSize(JComponent c)

Description copied from class: ComponentUI

Returns the specified component's maximum size appropriate for the look and feel. If null is returned, the maximum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize and returns that value.

Overrides:

getMaximumSize in class BasicMenuItemUI

Parameters:

c - the component whose maximum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

• JComponent.getMaximumSize()
• LayoutManager2.maximumLayoutSize(Container)

setupPostTimer

protected void setupPostTimer(JMenu menu)

Sets timer to the menu.

Parameters:

menu - an instance of JMenu.