com.maryanovsky.map.client.actions.mouse
Class WheelScrollZoomAction

java.lang.Object
  com.maryanovsky.map.client.actions.MapAction<HasAllWheelScrollHandlers>
      com.maryanovsky.map.client.actions.mouse.WheelScrollZoomAction

All Implemented Interfaces:

EventHandler, WheelScrollDownHandler, WheelScrollUpHandler

public class WheelScrollZoomAction
extends MapAction<HasAllWheelScrollHandlers>
implements WheelScrollUpHandler, WheelScrollDownHandler

Zooms the map in when the user scrolls the mouse-wheel up and zooms it out when he scrolls the mouse-wheel down.

Author:

Maryanovsky Alexander

Field Summary

Fields inherited from class com.maryanovsky.map.client.actions.MapAction

isAnimated, mapWidget

Constructor Summary

WheelScrollZoomAction(MapWidget mapWidget, boolean isAnimated)
Creates a new WheelScrollZoomAction for panning the specified map widget.

Method Summary

void	onWheelScrollDown(WheelScrollDownEvent evt) Invoked when the mouse wheel is scrolled down.
void	onWheelScrollUp(WheelScrollUpEvent evt) Invoked when the mouse wheel is scrolled up.
HandlerRegistration	registerWith(HasAllWheelScrollHandlers wheelScrollSource) Registers for handling wheel-scroll events from the specified source.

Methods inherited from class java.lang.Object

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

Constructor Detail

WheelScrollZoomAction

public WheelScrollZoomAction(MapWidget mapWidget,
                             boolean isAnimated)

Creates a new WheelScrollZoomAction for panning the specified map widget.

Parameters:

mapWidget - The target map widget.

isAnimated - Whether the zoom transition is animated.

Method Detail

registerWith

public HandlerRegistration registerWith(HasAllWheelScrollHandlers wheelScrollSource)

Registers for handling wheel-scroll events from the specified source.

Specified by:

registerWith in class MapAction<HasAllWheelScrollHandlers>

onWheelScrollUp

public void onWheelScrollUp(WheelScrollUpEvent evt)

Invoked when the mouse wheel is scrolled up.

Specified by:

onWheelScrollUp in interface WheelScrollUpHandler

onWheelScrollDown

public void onWheelScrollDown(WheelScrollDownEvent evt)

Invoked when the mouse wheel is scrolled down.

Specified by:

onWheelScrollDown in interface WheelScrollDownHandler