edu.northwestern.at.utils.swing
Class TableDragMouseHandler

java.lang.Object
  edu.northwestern.at.utils.swing.TableDragMouseHandler

All Implemented Interfaces:

java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.util.EventListener

public class TableDragMouseHandler
extends java.lang.Object
implements java.awt.event.MouseListener, java.awt.event.MouseMotionListener

Handles mouse events for drag and drop operations on JTable.

Field Summary

(package private) java.awt.event.MouseEvent

firstMouseEvent Mouse pressed event which may be initiating a drag.

Constructor Summary

TableDragMouseHandler()

Method Summary

void	mouseClicked(java.awt.event.MouseEvent event)
void	mouseDragged(java.awt.event.MouseEvent e) Handle mouse dragged event.
void	mouseEntered(java.awt.event.MouseEvent e)
void	mouseExited(java.awt.event.MouseEvent e)
void	mouseMoved(java.awt.event.MouseEvent e)
void	mousePressed(java.awt.event.MouseEvent e) Handle mouse pressed event.
void	mouseReleased(java.awt.event.MouseEvent e)

Methods inherited from class java.lang.Object

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

Field Detail

firstMouseEvent

java.awt.event.MouseEvent firstMouseEvent

Mouse pressed event which may be initiating a drag.

Constructor Detail

TableDragMouseHandler

public TableDragMouseHandler()

Method Detail

mousePressed

public void mousePressed(java.awt.event.MouseEvent e)

Handle mouse pressed event.

Specified by:

mousePressed in interface java.awt.event.MouseListener

Parameters:

e - The mouse pressed event.

Saves the mouse pressed event for later reference. The event is also consumed here.

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent e)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

mouseClicked

public void mouseClicked(java.awt.event.MouseEvent event)

Specified by:

mouseClicked in interface java.awt.event.MouseListener

mouseEntered

public void mouseEntered(java.awt.event.MouseEvent e)

Specified by:

mouseEntered in interface java.awt.event.MouseListener

mouseExited

public void mouseExited(java.awt.event.MouseEvent e)

Specified by:

mouseExited in interface java.awt.event.MouseListener

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)

Handle mouse dragged event.

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

Parameters:

e - The mouse dragged event.

If a previous mouse pressed event occurred, we check to see if the position of the drag event is at least 5 pixels away in both the horizontal and vertical directions. If so, we determine if the drag event is a copy or a move, and initiate the drag by creating a transfer handler on the selected component.

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener