1 files changed, 86 insertions, 0 deletions
diff --git a/src/Platform/Event.h b/src/Platform/Event.h
new file mode 100644
index 00000000..de85a4bc
--- /dev/null
+++ b/src/Platform/Event.h
@@ -0,0 +1,86 @@
+/*
+ Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#ifndef TC_HEADER_Platform_Event
+#define TC_HEADER_Platform_Event
+
+#include "PlatformBase.h"
+#include "ForEach.h"
+#include "Mutex.h"
+#include "SharedPtr.h"
+
+namespace TrueCrypt
+{
+	struct EventArgs
+	{
+		virtual ~EventArgs () { }
+	};
+
+	class EventConnectorBase
+	{
+	public:
+		virtual ~EventConnectorBase () { }
+		virtual void operator() (EventArgs &args) = 0;
+
+		virtual EventConnectorBase *CloneNew () const = 0;
+		virtual void *GetHandler () const = 0;
+	};
+
+	typedef list < shared_ptr <EventConnectorBase> > EventHandlerList;
+
+	template <class T>
+	class EventConnector : public EventConnectorBase
+	{
+	public:
+		typedef void (T::*EventHandlerFunction) (EventArgs &);
+
+		EventConnector (T *handler, EventHandlerFunction function)
+			: Handler (handler), Function (function) { }
+
+		virtual void operator() (EventArgs &args) { (Handler->*Function) (args); }
+
+		virtual EventConnectorBase *CloneNew () const { return new EventConnector <T> (*this); }
+		virtual void *GetHandler () const { return Handler; }
+
+	protected:
+		T *Handler;
+		EventHandlerFunction Function;
+	};
+
+	class Event
+	{
+	public:
+		Event () { }
+		virtual ~Event () { }
+
+		void Connect (const EventConnectorBase &connector);
+		void Disconnect (void *handler);
+		void Raise ();
+		void Raise (EventArgs &args);
+
+	protected:
+		EventHandlerList ConnectedHandlers;
+		Mutex HandlersMutex;
+
+	private:
+		Event (const Event &);
+		Event &operator= (const Event &);
+	};
+
+	struct ExceptionEventArgs : public EventArgs
+	{
+		ExceptionEventArgs (exception &ex) : mException (ex) { }
+		exception &mException;
+
+	private:
+		ExceptionEventArgs (const ExceptionEventArgs &);
+		ExceptionEventArgs &operator= (const ExceptionEventArgs &);
+	};
+}
+
+#endif // TC_HEADER_Platform_Event