BasicSliderUI.TrackListener (Java SE 11 & JDK 11 )

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

All Implemented Interfaces:

MouseListener, MouseMotionListener, MouseWheelListener, EventListener, MouseInputListener

Enclosing class:

BasicSliderUI
```
public class BasicSliderUI.TrackListener
extends MouseInputAdapter
```
Track mouse movements. This class should be treated as a "protected" inner class. Instantiate it only within subclasses of Foo.

Field Summary

Fields
Modifier and Type Field Description

protected int currentMouseX
Current mouse x.

protected int currentMouseY
Current mouse y.

protected int offset
The offset

Constructor Summary

Constructors
Constructor Description

TrackListener()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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`	`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.
`boolean`	`shouldScroll(int direction)`	Returns if scrolling should occur

Methods declared in class java.awt.event.MouseAdapter
mouseMoved, mouseWheelMoved

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods declared in interface java.awt.event.MouseListener
mouseClicked, mouseEntered, mouseExited, mouseReleased

Methods declared in interface java.awt.event.MouseMotionListener
mouseMoved

- Field Detail
  - offset
```
protected transient int offset
```
    The offset
  - currentMouseX
```
protected transient int currentMouseX
```
    Current mouse x.
  - currentMouseY
```
protected transient int currentMouseY
```
    Current mouse y.
- Constructor Detail
  - TrackListener
```
public TrackListener()
```
- Method Detail
  - 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.
    
    Parameters:
    
    e - the event to be processed
  - shouldScroll
```
public boolean shouldScroll(int direction)
```
    Returns if scrolling should occur
    
    Parameters:
    
    direction - the direction.
    
    Returns:
    
    if scrolling should occur
  - 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 MouseAdapter
    
    Parameters:
    
    e - the event to be processed