BasicSliderUI.TrackListener (Java 2 Platform SE v1.4.2) - Java 2 SDK v1.4.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.2

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javax.swing.plaf.basic
Class BasicSliderUI.TrackListener

java.lang.Object
  javax.swing.event.MouseInputAdapter
      javax.swing.plaf.basic.BasicSliderUI.TrackListener

All Implemented Interfaces:: EventListener, MouseInputListener, MouseListener, MouseMotionListener

Enclosing class:: BasicSliderUI

public class BasicSliderUI.TrackListener
extends MouseInputAdapter

Track mouse movements. This inner class is marked "public" due to a compiler bug. This class should be treated as a "protected" inner class. Instantiate it only within subclasses of .

Field Summary

protected int currentMouseX


protected int currentMouseY


protected int offset


Constructor Summary

BasicSliderUI.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 cursor has been moved onto a component but no buttons have been pushed.

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.

boolean shouldScroll(int direction)


Methods inherited from class javax.swing.event.MouseInputAdapter

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

BasicSliderUI.TrackListener

public BasicSliderUI.TrackListener()

Method Detail

mouseReleased

public void mouseReleased(MouseEvent e)

Description copied from interface: MouseListener

Invoked when a mouse button has been released on a component.

Specified by:: mouseReleased in interface MouseListener
Overrides:: mouseReleased in class MouseInputAdapter

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.

Specified by:: mousePressed in interface MouseListener
Overrides:: mousePressed in class MouseInputAdapter

shouldScroll

public boolean shouldScroll(int direction)

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
Overrides:: mouseDragged in class MouseInputAdapter

mouseMoved

public void mouseMoved(MouseEvent e)

Description copied from interface: MouseMotionListener

Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.

Specified by:: mouseMoved in interface MouseMotionListener
Overrides:: mouseMoved in class MouseInputAdapter