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()	Creates and returns a copy of this object.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
final Class<?>	getClass()	Returns the runtime class of this Object.
int	hashCode()	Returns a hash code value for this object.
final void	notify()	Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll()	Wakes up all threads that are waiting on this object's monitor.
String	toString()	Returns a string representation of the object.
final void	wait()	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
final void	wait(long timeoutMillis)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
final void	wait(long timeoutMillis, int nanos)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

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)