BasicTreeUI.ComponentHandler (Java Platform SE 6) (original) (raw)
javax.swing.plaf.basic
Class BasicTreeUI.ComponentHandler
java.lang.Object
java.awt.event.ComponentAdapter
javax.swing.plaf.basic.BasicTreeUI.ComponentHandler
All Implemented Interfaces:
ActionListener, ComponentListener, EventListener
Enclosing class:
public class BasicTreeUI.ComponentHandler
extends ComponentAdapter
implements ActionListener
Updates the preferred size when scrolling (if necessary).
| Field Summary | |
|---|---|
| protected JScrollBar | scrollBar ScrollBar that is being adjusted. |
| protected Timer | timer Timer used when inside a scrollpane and the scrollbar is adjusting. |
| Constructor Summary |
|---|
| BasicTreeUI.ComponentHandler() |
| Method Summary | |
|---|---|
| void | actionPerformed(ActionEvent ae) Public as a result of Timer. |
| void | componentMoved(ComponentEvent e) Invoked when the component's position changes. |
| protected JScrollPane | getScrollPane() Returns the JScrollPane housing the JTree, or null if one isn't found. |
| protected void | startTimer() Creates, if necessary, and starts a Timer to check if need to resize the bounds. |
| Methods inherited from class java.awt.event.ComponentAdapter |
|---|
| componentHidden, componentResized, componentShown |
| Methods inherited from class java.lang.Object |
|---|
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, [wait](../../../../java/lang/Object.html#wait%28long, int%29) |
| Field Detail |
|---|
timer
protected Timer timer
Timer used when inside a scrollpane and the scrollbar is adjusting.
scrollBar
protected JScrollBar scrollBar
ScrollBar that is being adjusted.
| Constructor Detail |
|---|
BasicTreeUI.ComponentHandler
public BasicTreeUI.ComponentHandler()
| Method Detail |
|---|
componentMoved
public void componentMoved(ComponentEvent e)
Description copied from class: [ComponentAdapter](../../../../java/awt/event/ComponentAdapter.html#componentMoved%28java.awt.event.ComponentEvent%29)
Invoked when the component's position changes.
Specified by:
[componentMoved](../../../../java/awt/event/ComponentListener.html#componentMoved%28java.awt.event.ComponentEvent%29) in interface [ComponentListener](../../../../java/awt/event/ComponentListener.html "interface in java.awt.event")
Overrides:
[componentMoved](../../../../java/awt/event/ComponentAdapter.html#componentMoved%28java.awt.event.ComponentEvent%29) in class [ComponentAdapter](../../../../java/awt/event/ComponentAdapter.html "class in java.awt.event")
startTimer
protected void startTimer()
Creates, if necessary, and starts a Timer to check if need to resize the bounds.
getScrollPane
protected JScrollPane getScrollPane()
Returns the JScrollPane housing the JTree, or null if one isn't found.
actionPerformed
public void actionPerformed(ActionEvent ae)
Public as a result of Timer. If the scrollBar is null, or not adjusting, this stops the timer and updates the sizing.
Specified by:
[actionPerformed](../../../../java/awt/event/ActionListener.html#actionPerformed%28java.awt.event.ActionEvent%29) in interface [ActionListener](../../../../java/awt/event/ActionListener.html "interface in java.awt.event")
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