# Class BasicComboPopup.InvocationMouseHandler

java.lang.Object
java.awt.event.MouseAdapter
javax.swing.plaf.basic.BasicComboPopup.InvocationMouseHandler

All Implemented Interfaces:
  `MouseListener, MouseMotionListener, MouseWheelListener, EventListener`

Enclosing class:
  `BasicComboPopup`

protected class BasicComboPopup.InvocationMouseHandler extends MouseAdapter
A listener to be registered upon the combo box (not its popup menu) to handle mouse events that affect the state of the popup menu. The main purpose of this listener is to make the popup menu appear and disappear. This listener also helps with click-and-drag scenarios by setting the selection if the mouse was released over the list during a drag.

Warning: We recommend that you not create subclasses of this class. If you absolutely must create a subclass, be sure to invoke the superclass version of each method.

See Also:
  - `BasicComboPopup.createMouseListener()`

- ## Constructor Summary

  Constructors
  Modifier
  Constructor
  Description
  `protected`
  `InvocationMouseHandler()`
  Constructs an `InvocationMouseHandler`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `mousePressed(MouseEvent e)`
  Responds to mouse-pressed events on the combo box.
  `void`
  `mouseReleased(MouseEvent e)`
  Responds to the user terminating a click or drag that began on the combo box.

  ### Methods declared in class MouseAdapter

  `mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mouseWheelMoved`

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### InvocationMouseHandler

    protected InvocationMouseHandler()
    Constructs an `InvocationMouseHandler`.

- ## Method Details

  - ### mousePressed

    public void mousePressed(MouseEvent e)
    Responds to mouse-pressed events on the combo box.
    Parameters:
      `e` - the mouse-press event to be handled

  - ### mouseReleased

    public void mouseReleased(MouseEvent e)
    Responds to the user terminating a click or drag that began on the combo box.
    Parameters:
      `e` - the mouse-release event to be handled