asquare.gwt.tk.client.ui.behavior
Class DragController

java.lang.Object
  asquare.gwt.tk.client.ui.behavior.EventDelegateAdaptor
      asquare.gwt.tk.client.ui.behavior.ControllerAdaptor
          asquare.gwt.tk.client.ui.behavior.DragController

All Implemented Interfaces:

Controller, EventDelegate

public class DragController
extends ControllerAdaptor

A controller which interprets drag events and delegates the mouse drag operation to a delegate.

See Also:

DragGesture

Constructor Summary

DragController(DragGesture gesture)
Creates a new DragController which delegates to the specified DragGesture.

DragController(DragGesture gesture, int distance)
Creates a new DragController which delegates to the specified DragGesture.

Method Summary

void	onBrowserEvent(Widget widget, Event event) Call this from your widget's onBrowserEvent() method to to delegate events.
void	onMouseDown(Widget sender, int x, int y)
void	onMouseMove(Widget sender, int x, int y)
void	onMouseUp(Widget sender, int x, int y)

Methods inherited from class asquare.gwt.tk.client.ui.behavior.ControllerAdaptor

getId, plugIn, unplug

Methods inherited from class asquare.gwt.tk.client.ui.behavior.EventDelegateAdaptor

doBrowserEvent, getEventBits

Methods inherited from class java.lang.Object

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

Methods inherited from interface asquare.gwt.tk.client.ui.behavior.EventDelegate

getEventBits

Constructor Detail

DragController

public DragController(DragGesture gesture)

Creates a new DragController which delegates to the specified DragGesture.

Parameters:

gesture - a delegate object

DragController

public DragController(DragGesture gesture,
                      int distance)

Creates a new DragController which delegates to the specified DragGesture. The DragGesture is not activated until the mouse movement equals the specified distance; this prevents accidental movement.

Parameters:

distance - the distance in screen pixels to move before taking an action, or 0

gesture - a delegate object

Method Detail

onBrowserEvent

public void onBrowserEvent(Widget widget,
                           Event event)

Description copied from interface: EventDelegate

Call this from your widget's onBrowserEvent() method to to delegate events.

Example:

 public void onBrowserEvent(Event event)
 {
   super.onBrowserEvent(event);
   delegate.onBrowserEvent(this, event);
 }
 

Specified by:

onBrowserEvent in interface EventDelegate

Overrides:

onBrowserEvent in class EventDelegateAdaptor

Parameters:

widget - the wiget that originated the event

event - the event

onMouseDown

public void onMouseDown(Widget sender,
                        int x,
                        int y)

onMouseMove

public void onMouseMove(Widget sender,
                        int x,
                        int y)

onMouseUp

public void onMouseUp(Widget sender,
                      int x,
                      int y)