cxMessageListener.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/
#ifndef CXMESSAGELISTENER_H
#define CXMESSAGELISTENER_H

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

#include <vector>
#include <QPointer>

namespace cx
{

typedef boost::shared_ptr<class MessageFilter> MessageFilterPtr;
typedef boost::shared_ptr<class MessageObserver> MessageObserverPtr;
typedef boost::shared_ptr<class MessageListener> MessageListenerPtr;
typedef boost::shared_ptr<class Log> LogPtr;

class cxResource_EXPORT MessageListener : public QObject
{
        Q_OBJECT
public:
        static MessageListenerPtr create(LogPtr log=LogPtr());
        static MessageListenerPtr createWithQueue(LogPtr log=LogPtr(), int size=1000);
        MessageListenerPtr clone();
        ~MessageListener();
        bool containsErrors() const;
    bool containsText(const QString text) const;
        QList<Message> getMessages() const;

        void restart(); // emit all messages in queue, then continue emitting new incoming messages

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

signals:
        void newMessage(Message message);
        void newChannel(QString channel);

private slots:
        void messageReceived(Message message);
private:
        MessageListener(LogPtr log);
        bool isError(MESSAGE_LEVEL level) const;
        void limitQueueSize();
        QList<Message> mMessages;
        LogPtr mManager;
        int mMessageHistoryMaxSize;

        MessageObserverPtr mObserver;
};


} // namespace cx


#endif // CXMESSAGELISTENER_H