75 lines
1.7 KiB
C++
Executable File
75 lines
1.7 KiB
C++
Executable File
/**
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* @RDE_HEADER@
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* VdSession
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* $Id$
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* $HeadURL$
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* $Author$
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* Created by Astrid Müller, SGAS, 2018-02-26
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*/
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#pragma once
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#include "avm_export.h"
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#include "logger.h"
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#include <QObject>
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#include <QString>
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#include <QTimer>
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namespace AudioVideoManagement
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{
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class VdControl;
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/**
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* The session is responsible for
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* - observing the connection to AVS
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* - regularly issuing a KeepAlive
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* - setting the context after a successful connect.
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*
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* In the application there are several clients communicating with the AVS
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* via a single VdControl-instance.
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* When the connection breaks down for some reason it will be re-established.
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* After that there must be one single instance which is responsible
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* to again set the context and user profile for the session.
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* The other clients may continue to communicate with the AVS only after
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* context and profile have been set.
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*
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* @author Astrid Müller, Christian Fröbel
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*/
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class AVM_COMMON_EXPORT VdSession : public QObject
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{
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Q_OBJECT
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public:
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VdSession(VdControl *ctrl, int exerciseId, bool keepAliveEnabled);
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/** Access to underlying VdControl instance. */
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VdControl *control() { return m_ctrl; }
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bool isEstablished() const { return m_established; }
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signals:
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/**
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* Will be emitted after the connection to AVS has successfully been established
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* and the context has been set.
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*/
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void sessionEstablished();
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void disconnected();
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private slots:
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void onConnected();
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void onDisconnected();
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void onKeepAliveTimerElapsed();
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private:
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VdControl *m_ctrl;
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bool m_established{false};
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int m_exerciseId;
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const bool m_keepAliveEnabled;
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QTimer m_keepAliveTimer;
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LOGGER_T m_logger;
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};
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} // namespace AudioVideoManagement
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