BasicSliderUI.TrackListener (Java Platform SE 8 )
Keywords: javax.swing.plaf.basic.BasicSliderUI.TrackListener class
Date: 2018-07-01

javax.swing.plaf.basic

## Class BasicSliderUI.TrackListener

- 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 and Description
    --- | ---
    `protected int` | `currentMouseX`
    `protected int` | `currentMouseY`
    `protected int` | `offset`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `TrackListener()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and 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` | `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 java.awt.event.MouseAdapter

      `mouseClicked, mouseEntered, mouseExited, mouseWheelMoved`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface java.awt.event.MouseListener

      `mouseClicked, mouseEntered, mouseExited`

- - ### Field Detail

    - #### offset

          protected transient int offset

    - #### currentMouseX

          protected transient int currentMouseX

    - #### currentMouseY

          protected transient int currentMouseY

  - ### Constructor Detail

    - #### TrackListener

          public 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.
      Specified by:
        `mouseReleased` in interface `MouseListener`
      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.
      Specified by:
        `mousePressed` in interface `MouseListener`
      Overrides:
        `mousePressed` in class `MouseAdapter`

    - #### 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 `MouseAdapter`

    - #### mouseMoved

          public void mouseMoved(MouseEvent e)

      Description copied from class: `MouseAdapter`
      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 `MouseAdapter`

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