JavaTM 2 Platform Std. Ed. v1.6.0
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 JavaBeansTM
has been added to the java.beans package.
Please see XMLEncoder .
- See Also:
Scrollable ,
JScrollPane.createVerticalScrollBar() ,
JScrollPane.createHorizontalScrollBar()
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, getBaseline, getBaselineResizeBehavior, 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, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update |
Methods inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree |
Methods inherited from class java.awt.Component |
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle |
JScrollPane.ScrollBar
public JScrollPane.ScrollBar(int orientation)
- Creates a scrollbar with the specified orientation.
The options are:
ScrollPaneConstants.VERTICAL
ScrollPaneConstants.HORIZONTAL
- Parameters:
orientation - an integer specifying one of the legal
orientation values shown above- Since:
- 1.4
setUnitIncrement
public void setUnitIncrement(int unitIncrement)
- Messages super to set the value, and resets the
unitIncrementSet instance variable to true.
- Specified by:
setUnitIncrement in interface Adjustable - Overrides:
setUnitIncrement in class JScrollBar
- Parameters:
unitIncrement - the new unit increment value, in pixels- See Also:
JScrollBar.getUnitIncrement(int)
getUnitIncrement
public int getUnitIncrement(int direction)
- Computes the unit increment for scrolling if the viewport's
view is a
Scrollable object.
Otherwise return super.getUnitIncrement .
- Overrides:
getUnitIncrement in class JScrollBar
- Parameters:
direction - less than zero to scroll up/left,
greater than zero for down/right
- Returns:
- an integer, in pixels, containing the unit increment
- See Also:
Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)
setBlockIncrement
public void setBlockIncrement(int blockIncrement)
- Messages super to set the value, and resets the
blockIncrementSet instance variable to true.
- Specified by:
setBlockIncrement in interface Adjustable - Overrides:
setBlockIncrement in class JScrollBar
- Parameters:
blockIncrement - the new block increment value, in pixels- See Also:
JScrollBar.getBlockIncrement()
getBlockIncrement
public int getBlockIncrement(int direction)
- Computes the block increment for scrolling if the viewport's
view is a
Scrollable object. Otherwise
the blockIncrement equals the viewport's width
or height. If there's no viewport return
super.getBlockIncrement .
- Overrides:
getBlockIncrement in class JScrollBar
- Parameters:
direction - less than zero to scroll up/left,
greater than zero for down/right
- Returns:
- an integer, in pixels, containing the block increment
- See Also:
Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)
Copyright 2003 Sun Microsystems, Inc. All rights reserved
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