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JHotDraw 7.6 | ||||||||
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public interface HandleListener
Interface implemented by observers of Handle
s.
Observer
State changes of handles can be observed by other objects. Specifically
DrawingView
observes area invalidations and remove requests of
handles.
Subject: Handle
;
Observer: HandleListener
;
Event: HandleEvent
;
Concrete Observer: DrawingView
.
Method Summary | |
---|---|
void |
areaInvalidated(HandleEvent e)
Sent when an area of the drawing view needs to be repainted. |
void |
handleRequestRemove(HandleEvent e)
Sent when requesting to remove a handle. |
void |
handleRequestSecondaryHandles(HandleEvent e)
Sent when requesting to add secondary handles. |
Method Detail |
---|
void areaInvalidated(HandleEvent e)
void handleRequestRemove(HandleEvent e)
void handleRequestSecondaryHandles(HandleEvent e)
|
Copyright 1996-2010 (c) by the authors and contributors of the JHotDraw project. Some rights reserved. |
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