java.awt.dnd
Class DropTarget.DropTargetAutoScroller

java.lang.Object
  java.awt.dnd.DropTarget.DropTargetAutoScroller

All Implemented Interfaces:

ActionListener, EventListener

Enclosing class:

DropTarget

protected static class DropTarget.DropTargetAutoScroller

extends Object

implements ActionListener

this protected nested class implements autoscrolling

Field Summary

private Autoscroll	autoScroll
private Component	component
private int	hysteresis
private Rectangle	inner
private Point	locn
private Rectangle	outer
private Point	prev
private Timer	timer

Constructor Summary

protected

DropTarget.DropTargetAutoScroller(Component c, Point p) construct a DropTargetAutoScroller

Method Summary

void	actionPerformed(ActionEvent e) cause autoscroll to occur
protected void	stop() cause autoscrolling to stop
protected void	updateLocation(Point newLocn) cause autoscroll to occur
private void	updateRegion() update the geometry of the autoscroll region

Methods inherited from class java.lang.Object

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

Field Detail

component

private Component component

autoScroll

private Autoscroll autoScroll

timer

private Timer timer

locn

private Point locn

prev

private Point prev

outer

private Rectangle outer

inner

private Rectangle inner

hysteresis

private int hysteresis

Constructor Detail

DropTarget.DropTargetAutoScroller

protected DropTarget.DropTargetAutoScroller(Component c,
                                            Point p)

construct a DropTargetAutoScroller

Parameters:

c - the Component

p - the Point

Method Detail

updateRegion

private void updateRegion()

update the geometry of the autoscroll region

updateLocation

protected void updateLocation(Point newLocn)

cause autoscroll to occur

Parameters:

newLocn - the Point

stop

protected void stop()

cause autoscrolling to stop

actionPerformed

public void actionPerformed(ActionEvent e)

cause autoscroll to occur

Specified by:

actionPerformed in interface ActionListener

Parameters:

e - the ActionEvent