BasicSplitPaneDivider.MouseHandler (Java Platform SE 8 )
Keywords: javax.swing.plaf.basic.BasicSplitPaneDivider.MouseHandler class
Date: 2026-04-22

javax.swing.plaf.basic

## Class BasicSplitPaneDivider.MouseHandler

- java.lang.Object
- - java.awt.event.MouseAdapter
  - - javax.swing.plaf.basic.BasicSplitPaneDivider.MouseHandler

- All Implemented Interfaces:
    MouseListener, MouseMotionListener, MouseWheelListener, EventListener
  Enclosing class:
    BasicSplitPaneDivider

      protected class BasicSplitPaneDivider.MouseHandler
      extends MouseAdapter
      implements MouseMotionListener

  MouseHandler is responsible for converting mouse events (released, dragged...) into the appropriate DragController methods.

- - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `MouseHandler()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `mouseDragged(MouseEvent e)` If dragger is not null it is messaged with continueDrag.
    `void` | `mouseEntered(MouseEvent e)` Invoked when the mouse enters a component.
    `void` | `mouseExited(MouseEvent e)` Invoked when the mouse exits a component.
    `void` | `mouseMoved(MouseEvent e)` Resets the cursor based on the orientation.
    `void` | `mousePressed(MouseEvent e)` Starts the dragging session by creating the appropriate instance of DragController.
    `void` | `mouseReleased(MouseEvent e)` If dragger is not null it is messaged with completeDrag.

    - ### Methods inherited from class java.awt.event.MouseAdapter

      `mouseClicked, mouseWheelMoved`

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

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

- - ### Constructor Detail

    - #### MouseHandler

          protected MouseHandler()

  - ### Method Detail

    - #### mousePressed

          public void mousePressed(MouseEvent e)

      Starts the dragging session by creating the appropriate instance of DragController.
      Specified by:
        `mousePressed` in interface `MouseListener`
      Overrides:
        `mousePressed` in class `MouseAdapter`

    - #### mouseReleased

          public void mouseReleased(MouseEvent e)

      If dragger is not null it is messaged with completeDrag.
      Specified by:
        `mouseReleased` in interface `MouseListener`
      Overrides:
        `mouseReleased` in class `MouseAdapter`

    - #### mouseDragged

          public void mouseDragged(MouseEvent e)

      If dragger is not null it is messaged with continueDrag.
      Specified by:
        `mouseDragged` in interface `MouseMotionListener`
      Overrides:
        `mouseDragged` in class `MouseAdapter`

    - #### mouseMoved

          public void mouseMoved(MouseEvent e)

      Resets the cursor based on the orientation.
      Specified by:
        `mouseMoved` in interface `MouseMotionListener`
      Overrides:
        `mouseMoved` in class `MouseAdapter`

    - #### mouseEntered

          public void mouseEntered(MouseEvent e)

      Invoked when the mouse enters a component.
      Specified by:
        `mouseEntered` in interface `MouseListener`
      Overrides:
        `mouseEntered` in class `MouseAdapter`
      Parameters:
        `e` - MouseEvent describing the details of the enter event.
      Since:
        1.5

    - #### mouseExited

          public void mouseExited(MouseEvent e)

      Invoked when the mouse exits a component.
      Specified by:
        `mouseExited` in interface `MouseListener`
      Overrides:
        `mouseExited` in class `MouseAdapter`
      Parameters:
        `e` - MouseEvent describing the details of the exit event.
      Since:
        1.5

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