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JavaTM 2 Platform
Std. Ed. v1.3.1

javax.swing.plaf.basic
Class BasicScrollBarUI.TrackListener

java.lang.Object
  |
  +--java.awt.event.MouseAdapter
        |
        +--javax.swing.plaf.basic.BasicScrollBarUI.TrackListener
All Implemented Interfaces:
EventListener, MouseListener, MouseMotionListener
Enclosing class:
BasicScrollBarUI

protected class BasicScrollBarUI.TrackListener
extends MouseAdapter
implements MouseMotionListener

Track mouse drags.


Field Summary
protected  int currentMouseX
           
protected  int currentMouseY
           
protected  int offset
           
 
Constructor Summary
protected BasicScrollBarUI.TrackListener()
           
 
Method Summary
 void mouseDragged(MouseEvent e)
          Set the models value to the position of the top/left of the thumb relative to the origin of the track.
 void mouseMoved(MouseEvent e)
          Invoked when the mouse button has been moved on a component (with no buttons no down).
 void mousePressed(MouseEvent e)
          If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page.
 void mouseReleased(MouseEvent e)
          Invoked when a mouse button has been released on a component.
 
Methods inherited from class java.awt.event.MouseAdapter
mouseClicked, mouseEntered, mouseExited
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

offset

protected transient int offset

currentMouseX

protected transient int currentMouseX

currentMouseY

protected transient int currentMouseY
Constructor Detail

BasicScrollBarUI.TrackListener

protected BasicScrollBarUI.TrackListener()
Method Detail

mouseReleased

public void mouseReleased(MouseEvent e)
Description copied from class: MouseAdapter
Invoked when a mouse button has been released on a component.
Overrides:
mouseReleased in class MouseAdapter

mousePressed

public void mousePressed(MouseEvent e)
If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page. If there is no thumb then page up if the mouse is in the upper half of the track.
Overrides:
mousePressed in class MouseAdapter

mouseDragged

public void mouseDragged(MouseEvent e)
Set the models value to the position of the top/left of the thumb relative to the origin of the track.
Specified by:
mouseDragged in interface MouseMotionListener

mouseMoved

public void mouseMoved(MouseEvent e)
Description copied from interface: MouseMotionListener
Invoked when the mouse button has been moved on a component (with no buttons no down).
Specified by:
mouseMoved in interface MouseMotionListener

JavaTM 2 Platform
Std. Ed. v1.3.1

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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