javax.swing.plaf.basic
Class BasicScrollPaneUI
java.lang.Object
|
+--javax.swing.plaf.ComponentUI
|
+--javax.swing.plaf.ScrollPaneUI
|
+--javax.swing.plaf.basic.BasicScrollPaneUI
- All Implemented Interfaces:
- ScrollPaneConstants
- Direct Known Subclasses:
- MetalScrollPaneUI
- public class BasicScrollPaneUI
- extends ScrollPaneUI
- implements ScrollPaneConstants
A default L&F implementation of ScrollPaneUI.
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 |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
scrollpane
protected JScrollPane scrollpane
vsbChangeListener
protected ChangeListener vsbChangeListener
hsbChangeListener
protected ChangeListener hsbChangeListener
viewportChangeListener
protected ChangeListener viewportChangeListener
spPropertyChangeListener
protected PropertyChangeListener spPropertyChangeListener
BasicScrollPaneUI
public BasicScrollPaneUI()
createUI
public static ComponentUI createUI(JComponent x)
paint
public void paint(Graphics g,
JComponent c)
- Overrides:
paint
in class ComponentUI
getPreferredSize
public Dimension getPreferredSize(JComponent c)
- Overrides:
getPreferredSize
in class ComponentUI
- Returns:
- null which indicates that the LayoutManager will compute the value
- See Also:
JComponent.getPreferredSize()
getMinimumSize
public Dimension getMinimumSize(JComponent c)
- Overrides:
getMinimumSize
in class ComponentUI
- Returns:
- the preferred size
- See Also:
getPreferredSize(javax.swing.JComponent)
getMaximumSize
public Dimension getMaximumSize(JComponent c)
- Overrides:
getMaximumSize
in class ComponentUI
- Returns:
- new Dimension(Short.MAX_VALUE, Short.MAX_VALUE)
installDefaults
protected void installDefaults(JScrollPane scrollpane)
installListeners
protected void installListeners(JScrollPane c)
installKeyboardActions
protected void installKeyboardActions(JScrollPane c)
installUI
public void installUI(JComponent x)
- Overrides:
installUI
in class ComponentUI
uninstallDefaults
protected void uninstallDefaults(JScrollPane c)
uninstallListeners
protected void uninstallListeners(JComponent c)
uninstallKeyboardActions
protected void uninstallKeyboardActions(JScrollPane c)
uninstallUI
public void uninstallUI(JComponent c)
- Overrides:
uninstallUI
in class ComponentUI
syncScrollPaneWithViewport
protected void syncScrollPaneWithViewport()
createViewportChangeListener
protected ChangeListener createViewportChangeListener()
createHSBChangeListener
protected ChangeListener createHSBChangeListener()
createVSBChangeListener
protected ChangeListener createVSBChangeListener()
updateScrollBarDisplayPolicy
protected void updateScrollBarDisplayPolicy(PropertyChangeEvent e)
updateViewport
protected void updateViewport(PropertyChangeEvent e)
updateRowHeader
protected void updateRowHeader(PropertyChangeEvent e)
updateColumnHeader
protected void updateColumnHeader(PropertyChangeEvent e)
createPropertyChangeListener
protected PropertyChangeListener createPropertyChangeListener()
- Creates an instance of PropertyChangeListener that's added to
the JScrollPane by installUI(). Subclasses can override this method
to return a custom PropertyChangeListener, e.g.
class MyScrollPaneUI extends BasicScrollPaneUI {
protected PropertyChangeListener createPropertyListener() {
return new MyPropertyListener();
}
public class MyPropertyListener extends PropertyListener {
public void propertyChange(PropertyChangeEvent e) {
if (e.getPropertyName().equals("viewport")) {
// do some extra work when the viewport changes
}
super.propertyChange(e);
}
}
}
- See Also:
PropertyListener
,
installUI(javax.swing.JComponent)
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