1 files changed, 73 insertions, 0 deletions
diff --git a/examples/testaggregation.cpp b/examples/testaggregation.cpp
new file mode 100644
index 0000000..c1a73bf
--- /dev/null
+++ b/examples/testaggregation.cpp
@@ -0,0 +1,73 @@
+/*
+
+    Copyright (C) 2000 Stefan Westerfeld
+                       [email protected]
+
+    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., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, 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);
+}