- 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 BasicTreeUI.ComponentHandler()
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Method Summary
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
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timer
protected Timer timer
Timer used when inside a scrollpane and the scrollbar is adjusting.
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scrollBar
protected JScrollBar scrollBar
ScrollBar that is being adjusted.
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Method Detail
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componentMoved
public void componentMoved(ComponentEvent e)
Description copied from class:ComponentAdapterInvoked when the component's position changes.- Specified by:
componentMovedin interfaceComponentListener- Overrides:
componentMovedin classComponentAdapter
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startTimer
protected void startTimer()
Creates, if necessary, and starts a Timer to check if need to resize the bounds.
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getScrollPane
protected JScrollPane getScrollPane()
Returns the JScrollPane housing the JTree, or null if one isn't found.
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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:
actionPerformedin interfaceActionListener
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Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-javax/swing/plaf/basic/BasicTreeUI.ComponentHandler.html
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