Class MetalMenuBarUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.MenuBarUI

javax.swing.plaf.basic.BasicMenuBarUI

javax.swing.plaf.metal.MetalMenuBarUI

public class MetalMenuBarUI
extends BasicMenuBarUI

Metal implementation of MenuBarUI. This class is responsible for providing the metal look and feel for JMenuBars.

Since:

1.5

See Also:

• MenuBarUI

Field Summary

Fields declared in class BasicMenuBarUI

changeListener, containerListener, menuBar

Modifier and Type	Field	Description
protected ChangeListener	changeListener	The instance of ChangeListener.
protected ContainerListener	containerListener	The instance of ContainerListener.
protected JMenuBar	menuBar	The instance of JMenuBar.

Constructor Summary

Constructors

Constructor	Description
MetalMenuBarUI()	Constructs a MetalMenuBarUI.

Method Summary

Modifier and Type	Method	Description
static ComponentUI	createUI(JComponent x)	Creates the ComponentUI implementation for the passed in component.
void	installUI(JComponent c)	Configures the specified component appropriate for the metal look and feel.
void	uninstallUI(JComponent c)	Reverses configuration which was done on the specified component during installUI.
void	update(Graphics g, JComponent c)	If necessary paints the background of the component, then invokes paint.

Methods declared in class BasicMenuBarUI

createChangeListener, createContainerListener, installDefaults, installKeyboardActions, installListeners, uninstallDefaults, uninstallKeyboardActions, uninstallListeners

Modifier and Type	Method	Description
protected ChangeListener	createChangeListener()	Returns an instance of ChangeListener.
protected ContainerListener	createContainerListener()	Returns an instance of ContainerListener.
protected void	installDefaults()	Installs default properties.
protected void	installKeyboardActions()	Registers keyboard actions.
protected void	installListeners()	Registers listeners.
protected void	uninstallDefaults()	Uninstalls default properties.
protected void	uninstallKeyboardActions()	Unregisters keyboard actions.
protected void	uninstallListeners()	Unregisters listeners.

Methods declared in class ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint

Modifier and Type	Method	Description
boolean	contains(JComponent c, int x, int y)	Returns true if the specified x,y location is contained within the look and feel's defined shape of the specified component.
Accessible	getAccessibleChild(JComponent c, int i)	Returns the ith Accessible child of the object.
int	getAccessibleChildrenCount(JComponent c)	Returns the number of accessible children in the object.
int	getBaseline(JComponent c, int width, int height)	Returns the baseline.
Component.BaselineResizeBehavior	getBaselineResizeBehavior(JComponent c)	Returns an enum indicating how the baseline of the component changes as the size changes.
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.
Dimension	getPreferredSize(JComponent c)	Returns the specified component's preferred size appropriate for the look and feel.
void	paint(Graphics g, JComponent c)	Paints the specified component appropriately for the look and feel.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

MetalMenuBarUI

public MetalMenuBarUI()

Constructs a MetalMenuBarUI.

Method Details

createUI

public static ComponentUI createUI(JComponent x)

Creates the ComponentUI implementation for the passed in component.

Parameters:

x - JComponent to create the ComponentUI implementation for

Returns:

ComponentUI implementation for x

Throws:

NullPointerException - if x is null

installUI

public void installUI(JComponent c)

Configures the specified component appropriate for the metal look and feel.

Overrides:

installUI in class ComponentUI

Parameters:

c - the component where this UI delegate is being installed

Throws:

NullPointerException - if c is null.

See Also:

• ComponentUI.uninstallUI(JComponent)
• JComponent.setUI(ComponentUI)
• JComponent.updateUI()

uninstallUI

public void uninstallUI(JComponent c)

Reverses configuration which was done on the specified component during installUI.

Overrides:

uninstallUI in class ComponentUI

Parameters:

c - the component where this UI delegate is being installed

Throws:

NullPointerException - if c is null.

See Also:

• ComponentUI.installUI(JComponent)
• JComponent.updateUI()

update

public void update(Graphics g,
 JComponent c)

If necessary paints the background of the component, then invokes paint.

Overrides:

update in class ComponentUI

Parameters:

g - Graphics to paint to

c - JComponent painting on

Throws:

NullPointerException - if g or c is null

Since:

1.5

See Also:

• ComponentUI.update(Graphics, JComponent)
• ComponentUI.paint(Graphics, JComponent)