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java.lang.Object
- java.awt.event.ComponentAdapter
- - javax.swing.plaf.basic.BasicTreeUI.ComponentHandler

All Implemented Interfaces:

ActionListener, ComponentListener, EventListener

Enclosing class:

BasicTreeUI
```
public class BasicTreeUI.ComponentHandler
extends ComponentAdapter
implements ActionListener
```
Updates the preferred size when scrolling (if necessary).

Field Summary

Fields
Modifier and Type	Field and Description
`protected JScrollBar`	`scrollBar` ScrollBar that is being adjusted.
`protected Timer`	`timer` Timer used when inside a scrollpane and the scrollbar is adjusting.

BasicTreeUI.ComponentHandler (Java Platform SE 7 ) Home of API Java Contents Haut

Constructor Summary

Constructors
Constructor and Description

BasicTreeUI.ComponentHandler()

BasicTreeUI.ComponentHandler (Java Platform SE 7 ) Home of API Java Contents Haut

Method Summary

Methods
Modifier and Type	Method and Description
`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.

BasicTreeUI.ComponentHandler (Java Platform SE 7 ) Home of API Java Contents Haut

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

- 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
    
    Invoked when the component's position changes.
    
    Specified by:
    
    componentMoved in interface ComponentListener
    
    Overrides:
    
    componentMoved in class ComponentAdapter
  - 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 in interface ActionListener

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Steph

Class BasicTreeUI.ComponentHandler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.awt.event.ComponentAdapter

Methods inherited from class java.lang.Object

Field Detail

timer

scrollBar

Constructor Detail

BasicTreeUI.ComponentHandler

Method Detail

componentMoved

startTimer

getScrollPane

actionPerformed

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Type of error (18-01)

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