1 files changed, 59 insertions, 0 deletions
diff --git a/casa/events/EventSource.H b/casa/events/EventSource.H
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+++ b/casa/events/EventSource.H
@@ -0,0 +1,59 @@
+// Copyright 2008, 2009 Brady J. Garvin
+
+// This file is part of Covering Arrays by Simulated Annealing (CASA).
+
+// CASA is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// CASA 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 General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with CASA.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#ifndef EVENT_SOURCE_H
+#define EVENT_SOURCE_H
+
+#include <set>
+#include "events/Listener.H"
+
+template<class MESSAGE>class EventSource {
+public:
+  typedef Listener<MESSAGE>		ListenerT;
+
+private:
+  std::set<ListenerT*>			listeners;
+
+public:
+  virtual ~EventSource() {}
+  bool isListener(const ListenerT&listener) const {
+    return listeners.find(&listener) != listeners.end();
+  }
+  void addListener(ListenerT&listener) {
+    listeners.insert(&listener);
+  }
+  void removeListener(ListenerT&listener) {
+    listeners.erase(&listener);
+  }
+  void removeAllListeners() {
+    listeners.clear();
+  }
+
+protected:
+  void dispatch(const MESSAGE&message) {
+    for(typename std::set<ListenerT*>::iterator iterator =
+	  listeners.begin(),
+	  end = listeners.end();
+	iterator != end;
+	++iterator) {
+      (*iterator)->signal(message);
+    }
+  }
+};
+
+#endif