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/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
package answers;
import figures.FigureElement;
import figures.Group;
import figures.Point;
import java.awt.Rectangle;
aspect Answer4e {
private Rectangle Group.cache = null;
private Group FigureElement.enclosingGroup = null;
before(FigureElement p, Group g):
execution(void add(FigureElement))
&& args(p)
&& target(g) {
p.enclosingGroup = g;
}
Rectangle around(Group g):
execution(Rectangle Group.getBounds())
&& this(g) {
if (g.cache == null) {
g.cache = proceed(g);
}
return g.cache;
}
before(Point p):
set(* Point.*)
&& target(p) {
FigureElement fe = p;
while (fe.enclosingGroup != null) {
fe.enclosingGroup.cache = null;
fe = fe.enclosingGroup;
}
}
}
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