javax.swing.plaf.basic
Class BasicTreeUI.ComponentHandler
- java.lang.Object
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- java.awt.event.ComponentAdapter
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- javax.swing.plaf.basic.BasicTreeUI.ComponentHandler
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- 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).
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Field Summary
Fields Modifier and Type Field and Description protected JScrollBarscrollBarScrollBar that is being adjusted.protected TimertimerTimer used when inside a scrollpane and the scrollbar is adjusting.
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Constructor Summary
Constructors Constructor and Description ComponentHandler()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidactionPerformed(ActionEvent ae)Public as a result of Timer.voidcomponentMoved(ComponentEvent e)Invoked when the component's position changes.protected JScrollPanegetScrollPane()Returns the JScrollPane housing the JTree, or null if one isn't found.protected voidstartTimer()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
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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.
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Method Detail
componentMoved
public void componentMoved(ComponentEvent e)
Description copied from class:ComponentAdapterInvoked when the component's position changes.- Specified by:
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componentMovedin interfaceComponentListener - Overrides:
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componentMovedin classComponentAdapter
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:
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actionPerformedin interfaceActionListener
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