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+/*
+
+ Copyright (C) 2000 Stefan Westerfeld
+ stefan@space.twc.de
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+*/
+
+#include "aggregation.h"
+#include <iostream>
+
+using namespace std;
+using namespace Arts;
+
+class String_impl : virtual public String_skel {
+ string _value;
+public:
+ void constructor(const std::string& value) { _value = value; }
+ string value() { return _value; }
+ void value(const std::string& newValue) { _value = newValue; }
+};
+
+REGISTER_IMPLEMENTATION(String_impl);
+
+void printall(Arts::Object o, std::string pre = "")
+{
+ String s;
+ s = DynamicCast(o);
+ if(!s.isNull())
+ cout << pre << " - " << s.value() << endl;
+
+ vector<string> *children = s._queryChildren();
+ vector<string>::iterator i;
+ for(i = children->begin(); i != children->end(); i++)
+ printall(s._getChild(*i), pre+" ");
+}
+
+/*
+ * Small test case for aggregation
+ *
+ * The idea behind all this is that you can add children to objects, building
+ * a tree (or if you like graph) of objects without the objects knowing anything
+ * about this. Aggregation has strong references, that means, the objects you
+ * add together in a tree will stay this way, as long as you keep a reference
+ * to the root.
+ */
+int main()
+{
+ Dispatcher d;
+
+ String s("spreadsheet");
+ s._addChild(String("chart"),"child1");
+ s._addChild(String("image"),"child2");
+ printall(s);
+
+ cout << "deleting \"child1\"" << endl;
+ if(!s._removeChild("child1")) cout << "FAIL" << endl;
+ printall(s);
+}