javax.swing.plaf.metal
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^TM has been added to the java.beans package. Please see XMLEncoder.

Author:

Steve Wilson

Nested Class Summary

Nested classes inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

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

Field Summary

private java.beans.PropertyChangeListener

scrollBarSwapListener

Fields inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

hsbChangeListener, scrollpane, spPropertyChangeListener, viewportChangeListener, vsbChangeListener

Fields inherited from interface javax.swing.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

MetalScrollPaneUI()

Method Summary

protected java.beans.PropertyChangeListener	createScrollBarSwapListener()
static ComponentUI	createUI(JComponent x) Returns an instance of the UI delegate for the specified component.
void	installListeners(JScrollPane scrollPane)
void	installUI(JComponent c) Configures the specified component appropriate for the look and feel.
void	uninstallListeners(JScrollPane scrollPane)
void	uninstallUI(JComponent c) Reverses configuration which was done on the specified component during installUI.
private void	updateScrollbarsFreeStanding() If the border of the scrollpane is an instance of MetalBorders.ScrollPaneBorder, the client property FREE_STANDING_PROP of the scrollbars is set to false, otherwise it is set to true.

Methods inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

createHSBChangeListener, createMouseWheelListener, createPropertyChangeListener, createViewportChangeListener, createVSBChangeListener, getMaximumSize, getMinimumSize, getPreferredSize, installDefaults, installKeyboardActions, paint, syncScrollPaneWithViewport, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, updateColumnHeader, updateRowHeader, updateScrollBarDisplayPolicy, updateViewport

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, update

Methods inherited from class java.lang.Object

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

Field Detail

scrollBarSwapListener

private java.beans.PropertyChangeListener scrollBarSwapListener

Constructor Detail

MetalScrollPaneUI

public MetalScrollPaneUI()

Method Detail

createUI

public static ComponentUI createUI(JComponent x)

Description copied from class: ComponentUI

Returns an instance of the UI delegate for the specified component. Each subclass must provide its own static createUI method that returns an instance of that UI delegate subclass. If the UI delegate subclass is stateless, it may return an instance that is shared by multiple components. If the UI delegate is stateful, then it should return a new instance per component. The default implementation of this method throws an error, as it should never be invoked.

installUI

public void installUI(JComponent c)

Description copied from class: ComponentUI

Configures the specified component appropriate 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 any 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

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

installListeners

public void installListeners(JScrollPane scrollPane)

Overrides:

installListeners in class BasicScrollPaneUI

uninstallListeners

public void uninstallListeners(JScrollPane scrollPane)

updateScrollbarsFreeStanding

private void updateScrollbarsFreeStanding()

If the border of the scrollpane is an instance of MetalBorders.ScrollPaneBorder, the client property FREE_STANDING_PROP of the scrollbars is set to false, otherwise it is set to true.

createScrollBarSwapListener

protected java.beans.PropertyChangeListener createScrollBarSwapListener()