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+//
+// libavg - Media Playback Engine.
+// Copyright (C) 2003-2014 Ulrich von Zadow
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// Current versions can be found at www.libavg.de
+//
+
+#ifndef _Publisher_H_
+#define _Publisher_H_
+
+#include "../api.h"
+
+#include "ExportedObject.h"
+#include "BoostPython.h"
+#include "PublisherDefinition.h"
+#include "MessageID.h"
+
+#include <boost/shared_ptr.hpp>
+
+// Python docs say python.h should be included before any standard headers (!)
+#include "WrapPython.h"
+
+#include <list>
+#include <map>
+
+namespace avg {
+
+class SubscriberInfo;
+typedef boost::shared_ptr<SubscriberInfo> SubscriberInfoPtr;
+typedef boost::weak_ptr<SubscriberInfo> SubscriberInfoWeakPtr;
+
+class Publisher;
+typedef boost::shared_ptr<Publisher> PublisherPtr;
+
+class AVG_API Publisher: public ExportedObject
+{
+public:
+ Publisher();
+ Publisher(const std::string& sTypeName);
+ virtual ~Publisher();
+
+ int subscribe(MessageID messageID, const py::object& callable);
+ void unsubscribe(MessageID messageID, int subscriberID);
+ void unsubscribe1(int subscriberID);
+ void unsubscribeCallable(MessageID messageID, const py::object& callable);
+ int getNumSubscribers(MessageID messageID);
+ bool isSubscribed(MessageID messageID, int subscriberID);
+ bool isSubscribedCallable(MessageID messageID, const py::object& callable);
+
+ // The following methods should really be protected, but python derived classes need
+ // to call them too.
+ void publish(MessageID messageID);
+
+ void notifySubscribers(MessageID messageID);
+ void notifySubscribers(const std::string& sMsgName);
+ template<class ARG_TYPE>
+ void notifySubscribers(const std::string& sMsgName, const ARG_TYPE& arg);
+ void notifySubscribersPy(MessageID messageID, const py::list& args);
+
+ static MessageID genMessageID();
+
+protected:
+ void removeSubscribers();
+
+private:
+ typedef std::list<SubscriberInfoWeakPtr> WeakSubscriberInfoList;
+ typedef std::list<SubscriberInfoPtr> SubscriberInfoList;
+ typedef std::map<MessageID, SubscriberInfoList> SignalMap;
+
+ void unsubscribeIterator(MessageID messageID, SubscriberInfoList::iterator it);
+ SubscriberInfoList& safeFindSubscribers(MessageID messageID);
+ void throwSubscriberNotFound(MessageID messageID, int subscriberID);
+ void dumpSubscribers(MessageID messageID);
+
+ PublisherDefinitionPtr m_pPublisherDef;
+ SignalMap m_SignalMap;
+ static int s_LastSubscriberID;
+
+ typedef std::pair<MessageID, int> UnsubscribeDescription;
+};
+
+template<class ARG_TYPE>
+void Publisher::notifySubscribers(const std::string& sMsgName, const ARG_TYPE& arg)
+{
+ MessageID messageID = m_pPublisherDef->getMessageID(sMsgName);
+ SubscriberInfoList& subscribers = safeFindSubscribers(messageID);
+ if (!subscribers.empty()) {
+ py::list args;
+ py::object pyArg(arg);
+ args.append(pyArg);
+ notifySubscribersPy(messageID, args);
+ }
+}
+
+
+}
+
+#endif
+