Class MetalScrollPaneUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ScrollPaneUI

javax.swing.plaf.basic.BasicScrollPaneUI

javax.swing.plaf.metal.MetalScrollPaneUI

All Implemented Interfaces:

ScrollPaneConstants

public class MetalScrollPaneUI
extends BasicScrollPaneUI

A Metal L&F implementation of ScrollPaneUI.

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.

Nested Class Summary

Nested classes/interfaces inherited from class BasicScrollPaneUI

BasicScrollPaneUI.HSBChangeListener, BasicScrollPaneUI.MouseWheelHandler, BasicScrollPaneUI.PropertyChangeHandler, BasicScrollPaneUI.ViewportChangeHandler, BasicScrollPaneUI.VSBChangeListener

Field Summary

Fields inherited from class BasicScrollPaneUI

hsbChangeListener, scrollpane, spPropertyChangeListener, viewportChangeListener, vsbChangeListener

Fields inherited from interface ScrollPaneConstants

COLUMN_HEADER, HORIZONTAL_SCROLLBAR, HORIZONTAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED, HORIZONTAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_POLICY, LOWER_LEADING_CORNER, LOWER_LEFT_CORNER, LOWER_RIGHT_CORNER, LOWER_TRAILING_CORNER, ROW_HEADER, UPPER_LEADING_CORNER, UPPER_LEFT_CORNER, UPPER_RIGHT_CORNER, UPPER_TRAILING_CORNER, VERTICAL_SCROLLBAR, VERTICAL_SCROLLBAR_ALWAYS, VERTICAL_SCROLLBAR_AS_NEEDED, VERTICAL_SCROLLBAR_NEVER, VERTICAL_SCROLLBAR_POLICY, VIEWPORT

Constructor Summary

Constructors

Constructor	Description
MetalScrollPaneUI()	Constructs a MetalScrollPaneUI.

Method Summary

Modifier and Type	Method	Description
protected PropertyChangeListener	createScrollBarSwapListener()	Returns a new PropertyChangeListener for scroll bar swap events.
static ComponentUI	createUI(JComponent x)	Constructs a new MetalScrollPaneUI.
void	installListeners(JScrollPane scrollPane)	Registers listeners.
void	installUI(JComponent c)	Configures the specified component appropriately for the look and feel.
protected void	uninstallListeners(JComponent c)	Unregisters listeners.
void	uninstallListeners(JScrollPane scrollPane)	Deprecated. - Replaced by uninstallListeners(JComponent)
void	uninstallUI(JComponent c)	Reverses configuration which was done on the specified component during installUI.

Methods inherited from class BasicScrollPaneUI

createHSBChangeListener, createMouseWheelListener, createPropertyChangeListener, createViewportChangeListener, createVSBChangeListener, getBaseline, getBaselineResizeBehavior, getMaximumSize, installDefaults, installKeyboardActions, paint, syncScrollPaneWithViewport, uninstallDefaults, uninstallKeyboardActions, updateColumnHeader, updateRowHeader, updateScrollBarDisplayPolicy, updateViewport

Methods inherited from class ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getMinimumSize, getPreferredSize, update

Methods inherited from class Object

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

Constructor Details

MetalScrollPaneUI

public MetalScrollPaneUI()

Constructs a MetalScrollPaneUI.

Method Details

createUI

public static ComponentUI createUI(JComponent x)

Constructs a new MetalScrollPaneUI.

Parameters:

x - a component

Returns:

a new MetalScrollPaneUI

installUI

public void installUI(JComponent c)

Description copied from class: ComponentUI

Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:

1. Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
2. Install a LayoutManager on the component if necessary.
3. Create/add any required sub-components to the component.
4. Create/install event listeners on the component.
5. Create/install a PropertyChangeListener on the component in order to detect and respond to component property changes appropriately.
6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
7. Initialize any appropriate instance data.

Overrides:

installUI in class BasicScrollPaneUI

Parameters:

c - the component where this UI delegate is being installed

See Also:

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

uninstallUI

public void uninstallUI(JComponent c)

Description copied from class: ComponentUI

Reverses configuration which was done on the specified component during installUI. This method is invoked when this UIComponent instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in installUI, being careful to leave the JComponent instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:

1. Remove any UI-set borders from the component.
2. Remove any UI-set layout managers on the component.
3. Remove any UI-added sub-components from the component.
4. Remove any UI-added event/property listeners from the component.
5. Remove any UI-installed keyboard UI from the component.
6. Nullify any allocated instance data objects to allow for GC.

Overrides:

uninstallUI in class BasicScrollPaneUI

Parameters:

c - the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

See Also:

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

installListeners

public void installListeners(JScrollPane scrollPane)

Description copied from class: BasicScrollPaneUI

Registers listeners.

Overrides:

installListeners in class BasicScrollPaneUI

Parameters:

scrollPane - an instance of JScrollPane

uninstallListeners

protected void uninstallListeners(JComponent c)

Unregisters listeners.

Overrides:

uninstallListeners in class BasicScrollPaneUI

Parameters:

c - a component

uninstallListeners

@Deprecated
public void uninstallListeners(JScrollPane scrollPane)

Deprecated.

- Replaced by uninstallListeners(JComponent)

Parameters:

scrollPane - an instance of the JScrollPane

createScrollBarSwapListener

protected PropertyChangeListener createScrollBarSwapListener()

Returns a new PropertyChangeListener for scroll bar swap events.

Returns:

a new PropertyChangeListener for scroll bar swap events.