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- 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 JScrollBar
scrollBar
ScrollBar that is being adjusted.protected Timer
timer
Timer 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 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
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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:ComponentAdapter
Invoked when the component's position changes.- Specified by:
componentMoved
in interfaceComponentListener
- Overrides:
componentMoved
in 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:
actionPerformed
in interfaceActionListener
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