cxReporterMessageRepository.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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=========================================================================*/
#ifndef CXREPORTERMESSAGEREPOSITORY_H
#define CXREPORTERMESSAGEREPOSITORY_H

#include "cxResourceExport.h"
#include "cxReporter.h"
#include "cxMessageListener.h"


#include <vector>
#include <QPointer>

#include "cxEnumConverter.h"

namespace cx
{

class MessageObserver : public QObject
{
        Q_OBJECT
public:
        void sendMessage(const Message& message);
        void installFilter(MessageFilterPtr filter);

signals:
        void newMessage(Message message);
        void newChannel(QString channel);
private:
        bool testFilter(const Message &msg) const;

        MessageFilterPtr mFilter;
        QStringList mChannels;
        QMutex mMutex;
};

typedef boost::shared_ptr<class MessageObserver> MessageObserverPtr;
typedef boost::shared_ptr<class MessageListener> MessageListenerPtr;
typedef boost::shared_ptr<class MessageRepository> MessageRepositoryPtr;

class MessageRepository : public QObject
{
public:
        static MessageRepositoryPtr create();
        ~MessageRepository();
        void setMessage(Message message);

        void install(MessageObserverPtr observer, bool resend);
        void uninstall(MessageObserverPtr observer);

        void setMessageQueueMaxSize(int count);
        int getMessageQueueMaxSize() const; // <0 means infinite
        void clearQueue();

private:
        MessageRepository();
        void limitQueueSize();
        void emitThroughFilter(const Message& message);
        QList<Message> mMessages;
        std::vector<MessageObserverPtr> mObservers;
        int mMessageHistoryMaxSize;
        bool exists(MessageObserverPtr observer);
};


} // namespace cx

#endif // CXREPORTERMESSAGEREPOSITORY_H