1 files changed, 96 insertions, 0 deletions
diff --git a/src/main/events.h b/src/main/events.h
new file mode 100644
index 0000000..f9a6be3
--- /dev/null
+++ b/src/main/events.h
@@ -0,0 +1,96 @@
+/*
+ * events.h
+ *
+ *  Created on: May 23, 2011
+ *      Author: jakob
+ */
+
+#ifndef EVENTS_H_
+#define EVENTS_H_
+
+#include <list>
+#include <algorithm>
+#include "Particle.h"
+
+namespace vhc {
+
+class Event {
+
+private:
+	void *const sender;
+
+public:
+	Event(void *const sender);
+	virtual ~Event();
+
+	void *const getSender() const;
+
+};
+
+class ParticleEvent: public Event {
+private:
+	Particle *const particle;
+public:
+
+	ParticleEvent(void *const sender, Particle *const particle);
+	virtual ~ParticleEvent();
+
+	Particle *const getParticle() const;
+
+};
+
+class ParticleAddedEvent: public ParticleEvent {
+public:
+	ParticleAddedEvent(void *const sender, Particle *const particle);
+	virtual ~ParticleAddedEvent();
+};
+
+class ParticleRemovedEvent: public ParticleEvent {
+public:
+	ParticleRemovedEvent(void *const sender, Particle *const particle);
+	virtual ~ParticleRemovedEvent();
+};
+
+template<typename T>
+class Listener {
+
+public:
+
+	virtual void react(const T& event) = 0;
+
+};
+
+template<typename T>
+class Publisher {
+
+private:
+
+	typedef std::list< Listener<T> * > ListenerCollection;
+	ListenerCollection listeners;
+
+protected:
+
+	Publisher(): listeners(0) {};
+	virtual ~Publisher() {};
+
+	void publish(const T& event) {
+		for (typename ListenerCollection::iterator i = listeners.begin(); i != listeners.end(); ++i) {
+			(**i).react(event);
+		}
+	}
+
+public:
+
+	void subscribe(Listener<T>* listener) {
+		listeners.push_back(listener);
+	}
+
+	void unsubscribe(Listener<T>* listener) {
+		listeners.remove(listener);
+	}
+
+};
+
+}
+
+#endif /* EVENTS_H_ */