blacklib folder reorganisation

src/blackmisc/message_factory.h

@@ -0,0 +1,59 @@
+//! Copyright (C) 2013 Roland Winklmeier
+//! This Source Code Form is subject to the terms of the Mozilla Public
+//! License, v. 2.0. If a copy of the MPL was not distributed with this
+//! file, You can obtain one at http://mozilla.org/MPL/2.0/
+
+#ifndef MESSAGE_FACTORY_H
+#define MESSAGE_FACTORY_H
+
+#include <QHash>
+#include "blackmisc/message.h"
+#include "blackmisc/gui_messages.h"
+#include "blackmisc/debug.h"
+#include "blackmisc/context.h"
+
+#define REGISTER_MESSAGE(classname, msgName) new MessageCreatorImpl<classname>(#msgName);
+
+
+namespace BlackMisc
+{
+    class IMessageCreator
+    {
+    public:
+        IMessageCreator(const QString& messageID);
+
+        virtual IMessage* create() = 0;
+    };
+
+    template <class T>
+    class MessageCreatorImpl : public IMessageCreator
+    {
+    public:
+        MessageCreatorImpl(const QString& messageID) : IMessageCreator(messageID) {}
+        virtual IMessage* create() { return new T; }
+    };
+
+    class CMessageFactory
+    {
+        // safe singleton declaration
+        SINGLETON_CLASS_DECLARATION(CMessageFactory)
+
+        CMessageFactory() { }
+    public:
+
+        virtual ~CMessageFactory();
+
+        IMessage* create (const QString &messageID);
+
+        void registerMessage(const QString &messageID, IMessageCreator* creator);
+        static void registerMessages();
+
+    private:
+
+        typedef QHash<QString, IMessageCreator*> TMessageCreatorHash;
+        TMessageCreatorHash m_creators;
+    };
+
+} // namespace BlackMisc
+
+#endif // MESSAGE_FACTORY_H