javax.swing
Class JScrollPane.ScrollBar

java.lang.Object   
  java.awt.Component   
      java.awt.Container   
          javax.swing.JComponent   
              javax.swing.JScrollBar   
                  javax.swing.JScrollPane.ScrollBar

All Implemented Interfaces:

Adjustable , ImageObserver , MenuContainer , Serializable , Accessible , UIResource

Enclosing class:

JScrollPane

protected class JScrollPane.ScrollBar
extends JScrollBar   
implements UIResource   

By default JScrollPane creates scrollbars that are instances of this class. Scrollbar overrides the getUnitIncrement and getBlockIncrement methods so that, if the viewport's view is a Scrollable, the view is asked to compute these values. Unless the unit/block increment have been explicitly set.

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 .

See Also:

Scrollable , JScrollPane.createVerticalScrollBar() , JScrollPane.createHorizontalScrollBar() , Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JScrollBar

JScrollBar.AccessibleJScrollBar

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent , Component.BltBufferStrategy , Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.swing.JScrollBar

blockIncrement , model , orientation , unitIncrement

Fields inherited from class javax.swing.JComponent

accessibleContext , listenerList , TOOL_TIP_TEXT_KEY , ui , UNDEFINED_CONDITION , WHEN_ANCESTOR_OF_FOCUSED_COMPONENT , WHEN_FOCUSED , WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT , CENTER_ALIGNMENT , LEFT_ALIGNMENT , RIGHT_ALIGNMENT , TOP_ALIGNMENT

Fields inherited from interface java.awt.Adjustable

HORIZONTAL , NO_ORIENTATION , VERTICAL

Fields inherited from interface java.awt.image.ImageObserver

ABORT , ALLBITS , ERROR , FRAMEBITS , HEIGHT , PROPERTIES , SOMEBITS , WIDTH

Constructor Summary

JScrollPane.ScrollBar (int orientation)
Creates a scrollbar with the specified orientation.

Method Summary

int	getBlockIncrement (int direction) Computes the block increment for scrolling if the viewport's view is a Scrollable object.
int	getUnitIncrement (int direction) Computes the unit increment for scrolling if the viewport's view is a Scrollable object.
void	setBlockIncrement (int blockIncrement) Messages super to set the value, and resets the blockIncrementSet instance variable to true.
void	setUnitIncrement (int unitIncrement) Messages super to set the value, and resets the unitIncrementSet instance variable to true.

Methods inherited from class javax.swing.JScrollBar

addAdjustmentListener , fireAdjustmentValueChanged , getAccessibleContext , getAdjustmentListeners , getBlockIncrement , getMaximum , getMaximumSize , getMinimum , getMinimumSize , getModel , getOrientation , getUI , getUIClassID , getUnitIncrement , getValue , getValueIsAdjusting , getVisibleAmount , paramString , removeAdjustmentListener , setEnabled , setMaximum , setMinimum , setModel , setOrientation , setUI , setValue , setValueIsAdjusting , setValues , setVisibleAmount , updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener , addNotify , addVetoableChangeListener , computeVisibleRect , contains , createToolTip , disable , enable , firePropertyChange , firePropertyChange , firePropertyChange , fireVetoableChange , getActionForKeyStroke , getActionMap , getAlignmentX , getAlignmentY , getAncestorListeners , getAutoscrolls , getBorder , getBounds , getClientProperty , getComponentGraphics , getComponentPopupMenu , getConditionForKeyStroke , getDebugGraphicsOptions , getDefaultLocale , getFontMetrics , getGraphics , getHeight , getInheritsPopupMenu , getInputMap , getInputMap , getInputVerifier , getInsets , getInsets , getListeners , getLocation , getNextFocusableComponent , getPopupLocation , getPreferredSize , getRegisteredKeyStrokes , getRootPane , getSize , getToolTipLocation , getToolTipText , getToolTipText , getTopLevelAncestor , getTransferHandler , getVerifyInputWhenFocusTarget , getVetoableChangeListeners , getVisibleRect , getWidth , getX , getY , grabFocus , isDoubleBuffered , isLightweightComponent , isManagingFocus , isOpaque , isOptimizedDrawingEnabled , isPaintingTile , isRequestFocusEnabled , isValidateRoot , paint , paintBorder , paintChildren , paintComponent , paintImmediately , paintImmediately , print , printAll , printBorder