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:

BasicTreeUI

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

 

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.

BasicTreeUI.ComponentHandler

public BasicTreeUI.ComponentHandler()

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