diff --git a/src/blackcore/context_all_empties.h b/src/blackcore/context_all_empties.h
index 8df5bfb2a..f89ad9a88 100644
--- a/src/blackcore/context_all_empties.h
+++ b/src/blackcore/context_all_empties.h
@@ -1,11 +1,19 @@
+/* Copyright (C) 2013
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
 #ifndef BLACKCORE_CONTEXT_ALL_EMPTIES_H
 #define BLACKCORE_CONTEXT_ALL_EMPTIES_H
 
-// #include "context_application_empty.h"
+#include "context_application_empty.h"
 #include "context_audio_empty.h"
 #include "context_network_empty.h"
-// #include "context_ownaircraft_empty.h"
-// #include "context_settings_empty.h"
-// #include "context_simulator_empty.h"
+#include "context_ownaircraft_empty.h"
+#include "context_simulator_empty.h"
 
 #endif // guard
diff --git a/src/blackcore/context_application.cpp b/src/blackcore/context_application.cpp
index c43b72c03..73dbe694f 100644
--- a/src/blackcore/context_application.cpp
+++ b/src/blackcore/context_application.cpp
@@ -10,6 +10,7 @@
 #include "blackcore/context_application.h"
 #include "blackcore/context_application_impl.h"
 #include "blackcore/context_application_proxy.h"
+#include "blackcore/context_application_empty.h"
 #include "blackcore/input_manager.h"
 #include "blackcore/settingscache.h"
 #include "blackmisc/statusmessage.h"
@@ -33,72 +34,73 @@ namespace BlackCore
             return (new CContextApplication(mode, parent))->registerWithDBus(server);
         case CRuntimeConfig::Remote:
             return new BlackCore::CContextApplicationProxy(BlackCore::CDBusServer::ServiceName(), connection, mode, parent);
+        case CRuntimeConfig::NotUsed:
         default:
-            qFatal("Always initialize an application context!");
-            return nullptr;
+            return new CContextApplicationEmpty(parent);
         }
     }
 
     IContextApplication::IContextApplication(CRuntimeConfig::ContextMode mode, CRuntime *runtime) :
         CContext(mode, runtime)
     {
-        connect(CLogHandler::instance(), &CLogHandler::localMessageLogged, this, [this](const CStatusMessage &message)
+        if (mode == CRuntimeConfig::NotUsed) { return; }
+        connect(CLogHandler::instance(), &CLogHandler::localMessageLogged, this, [this](const CStatusMessage & message)
         {
             this->logMessage(message, {});
         });
-        connect(CLogHandler::instance(), &CLogHandler::subscriptionAdded, this, [this](const CLogPattern &pattern)
+        connect(CLogHandler::instance(), &CLogHandler::subscriptionAdded, this, [this](const CLogPattern & pattern)
         {
             this->addLogSubscription({}, pattern);
         });
-        connect(CLogHandler::instance(), &CLogHandler::subscriptionRemoved, this, [this](const CLogPattern &pattern)
+        connect(CLogHandler::instance(), &CLogHandler::subscriptionRemoved, this, [this](const CLogPattern & pattern)
         {
             this->removeLogSubscription({}, pattern);
         });
-        connect(this, &IContextApplication::logSubscriptionAdded, this, [this](const CIdentifier &subscriber, const CLogPattern &pattern)
+        connect(this, &IContextApplication::logSubscriptionAdded, this, [this](const CIdentifier & subscriber, const CLogPattern & pattern)
         {
             this->m_logSubscriptions[subscriber].push_back(pattern);
         });
-        connect(this, &IContextApplication::logSubscriptionRemoved, this, [this](const CIdentifier &subscriber, const CLogPattern &pattern)
+        connect(this, &IContextApplication::logSubscriptionRemoved, this, [this](const CIdentifier & subscriber, const CLogPattern & pattern)
         {
             this->m_logSubscriptions[subscriber].removeAll(pattern);
         });
 
-        connect(CSettingsCache::instance(), &CSettingsCache::valuesChangedByLocal, [this](const CValueCachePacket &settings)
+        connect(CSettingsCache::instance(), &CSettingsCache::valuesChangedByLocal, [this](const CValueCachePacket & settings)
         {
             this->changeSettings(settings, {});
         });
 
-        connect(this, &IContextApplication::settingsChanged, [](const CValueCachePacket &settings, const CIdentifier &origin)
+        connect(this, &IContextApplication::settingsChanged, [](const CValueCachePacket & settings, const CIdentifier & origin)
         {
             // Intentionally don't check for round trip here
             CSettingsCache::instance()->changeValuesFromRemote(settings, origin);
         });
 
-        bool s = connect(CInputManager::instance(), &CInputManager::hotkeyActionRegistered, [this](const QStringList &actions)
+        bool s = connect(CInputManager::instance(), &CInputManager::hotkeyActionRegistered, [this](const QStringList & actions)
         {
             this->registerHotkeyActions(actions, {});
         });
         Q_ASSERT_X(s, Q_FUNC_INFO, "Connect hotkey action failed");
         Q_UNUSED(s);
 
-        s = connect(this, &IContextApplication::hotkeyActionsRegistered, [this](const QStringList &actions, const CIdentifier &origin)
+        s = connect(this, &IContextApplication::hotkeyActionsRegistered, [this](const QStringList & actions, const CIdentifier & origin)
         {
-            if(origin.isFromSameProcess()) { return; }
+            if (origin.isFromSameProcess()) { return; }
             CInputManager::instance()->registerRemoteActions(actions);
         });
         Q_ASSERT_X(s, Q_FUNC_INFO, "Connect hotkey actions failed");
         Q_UNUSED(s);
 
-        s = connect(CInputManager::instance(), &CInputManager::remoteActionFromLocal, [this](const QString &action, bool argument)
+        s = connect(CInputManager::instance(), &CInputManager::remoteActionFromLocal, [this](const QString & action, bool argument)
         {
             this->callHotkeyAction(action, argument, {});
         });
         Q_ASSERT_X(s, Q_FUNC_INFO, "Connect remote action failed");
         Q_UNUSED(s);
 
-        s = connect(this, &IContextApplication::remoteHotkeyAction, [this](const QString &action, bool argument, const CIdentifier &origin)
+        s = connect(this, &IContextApplication::remoteHotkeyAction, [this](const QString & action, bool argument, const CIdentifier & origin)
         {
-            if(origin.isFromLocalMachine()) { return; }
+            if (origin.isFromLocalMachine()) { return; }
             CInputManager::instance()->callFunctionsBy(action, argument);
             CLogMessage(this, CLogCategory::contextSlot()).debug() << "Calling function" << action << "from origin" << origin.getMachineName();
         });
@@ -114,7 +116,7 @@ namespace BlackCore
         CIdentifierList result;
         for (auto it = m_logSubscriptions.begin(); it != m_logSubscriptions.end(); ++it)
         {
-            bool match = std::any_of(it->begin(), it->end(), [&message](const CLogPattern &pattern) { return pattern.match(message); });
+            bool match = std::any_of(it->begin(), it->end(), [&message](const CLogPattern & pattern) { return pattern.match(message); });
             if (match) { result.push_back(it.key()); }
         }
         return result;
diff --git a/src/blackcore/context_application_empty.h b/src/blackcore/context_application_empty.h
new file mode 100644
index 000000000..00dd60967
--- /dev/null
+++ b/src/blackcore/context_application_empty.h
@@ -0,0 +1,178 @@
+/* Copyright (C) 2015
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#ifndef BLACKCORE_CONTEXTAPPLICATION_EMPTY_H
+#define BLACKCORE_CONTEXTAPPLICATION_EMPTY_H
+
+#include "blackcoreexport.h"
+#include "context_application.h"
+#include "context_runtime.h"
+#include "blackmisc/identifierlist.h"
+
+namespace BlackCore
+{
+    class CRuntime;
+
+    //! Application context
+    class BLACKCORE_EXPORT CContextApplicationEmpty : public IContextApplication
+    {
+    public:
+        //! Constructor
+        CContextApplicationEmpty(CRuntime *runtime) : IContextApplication(CRuntimeConfig::NotUsed, runtime) {}
+
+    public slots:
+        //! \copydoc IContextApplication::logMessage
+        virtual void logMessage(const BlackMisc::CStatusMessage &message, const BlackMisc::CIdentifier &origin) override
+        {
+            Q_UNUSED(message);
+            Q_UNUSED(origin);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::addLogSubscription
+        virtual void addLogSubscription(const BlackMisc::CIdentifier &subscriber, const BlackMisc::CLogPattern &pattern) override
+        {
+            Q_UNUSED(subscriber);
+            Q_UNUSED(pattern);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::removeLogSubscription
+        virtual void removeLogSubscription(const BlackMisc::CIdentifier &subscriber, const BlackMisc::CLogPattern &pattern) override
+        {
+            Q_UNUSED(subscriber);
+            Q_UNUSED(pattern);
+            logEmptyContextWarning(Q_FUNC_INFO);
+
+        }
+
+        //! \copydoc IContextApplication::getAllLogSubscriptions
+        virtual CLogSubscriptionHash getAllLogSubscriptions() const
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return CLogSubscriptionHash();
+        }
+
+        //! \copydoc IContextApplication::synchronizeLogSubscriptions
+        virtual void synchronizeLogSubscriptions()
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::changeSettings
+        virtual void changeSettings(const BlackMisc::CValueCachePacket &settings, const BlackMisc::CIdentifier &origin) override
+        {
+            Q_UNUSED(settings);
+            Q_UNUSED(origin);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::getAllSettings
+        virtual BlackMisc::CValueCachePacket getAllSettings() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CValueCachePacket();
+        }
+
+        //! \copydoc IContextApplication::synchronizeLocalSettings
+        virtual void synchronizeLocalSettings() override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::saveSettings
+        virtual BlackMisc::CStatusMessage saveSettings(const QString &keyPrefix = {}) override
+        {
+            Q_UNUSED(keyPrefix);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CStatusMessage();
+        }
+
+        //! \copydoc IContextApplication::loadSettings
+        virtual BlackMisc::CStatusMessage loadSettings() override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CStatusMessage();
+        }
+
+        //! \copydoc IContextApplication::registerHotkeyActions
+        virtual void registerHotkeyActions(const QStringList &actions, const BlackMisc::CIdentifier &origin) override
+        {
+            Q_UNUSED(actions);
+            Q_UNUSED(origin);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::callHotkeyAction
+        virtual void callHotkeyAction(const QString &action, bool argument, const BlackMisc::CIdentifier &origin) override
+        {
+            Q_UNUSED(action);
+            Q_UNUSED(argument);
+            Q_UNUSED(origin);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::writeToFile
+        virtual bool writeToFile(const QString &fileName, const QString &content) override
+        {
+            Q_UNUSED(fileName);
+            Q_UNUSED(content);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextApplication::registerApplication
+        virtual BlackMisc::CIdentifier registerApplication(const BlackMisc::CIdentifier &application) override
+        {
+            Q_UNUSED(application);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CIdentifier();
+        }
+
+        //! \copydoc IContextApplication::unRegisterApplication
+        virtual void unregisterApplication(const BlackMisc::CIdentifier &application) override
+        {
+            Q_UNUSED(application);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextApplication::getRegisteredApplications
+        virtual BlackMisc::CIdentifierList getRegisteredApplications() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CIdentifierList();
+        }
+
+        //! \copydoc IContextApplication::readFromFile
+        virtual QString readFromFile(const QString &fileName) const override
+        {
+            Q_UNUSED(fileName);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return QString();
+        }
+
+        //! \copydoc IContextApplication::removeFile
+        virtual bool removeFile(const QString &fileName) override
+        {
+            Q_UNUSED(fileName);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextApplication::existsFile
+        virtual bool existsFile(const QString &fileName) const override
+        {
+            Q_UNUSED(fileName);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+    };
+} // namespace
+
+#endif // guard
diff --git a/src/blackcore/context_ownaircraft.cpp b/src/blackcore/context_ownaircraft.cpp
index ecceada50..b0130cc92 100644
--- a/src/blackcore/context_ownaircraft.cpp
+++ b/src/blackcore/context_ownaircraft.cpp
@@ -10,10 +10,10 @@
 #include "context_ownaircraft.h"
 #include "context_ownaircraft_impl.h"
 #include "context_ownaircraft_proxy.h"
+#include "context_ownaircraft_empty.h"
 
 namespace BlackCore
 {
-
     IContextOwnAircraft *IContextOwnAircraft::create(CRuntime *parent, CRuntimeConfig::ContextMode mode, CDBusServer *server, QDBusConnection &conn)
     {
         switch (mode)
@@ -22,10 +22,10 @@ namespace BlackCore
         case CRuntimeConfig::LocalInDbusServer:
             return (new CContextOwnAircraft(mode, parent))->registerWithDBus(server);
         case CRuntimeConfig::Remote:
-            return new BlackCore::CContextOwnAircraftProxy(BlackCore::CDBusServer::ServiceName(), conn, mode, parent);
+            return new CContextOwnAircraftProxy(BlackCore::CDBusServer::ServiceName(), conn, mode, parent);
+        case CRuntimeConfig::NotUsed:
         default:
-            qFatal("Always initialize an ownAircraft context");
-            return nullptr;
+            return new CContextOwnAircraftEmpty(parent);
         }
     }
 } // namespace
diff --git a/src/blackcore/context_ownaircraft_empty.h b/src/blackcore/context_ownaircraft_empty.h
new file mode 100644
index 000000000..41bd1da76
--- /dev/null
+++ b/src/blackcore/context_ownaircraft_empty.h
@@ -0,0 +1,134 @@
+/* Copyright (C) 2013
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKCORE_CONTEXTOWNAIRCRAFT_EMPTY_H
+#define BLACKCORE_CONTEXTOWNAIRCRAFT_EMPTY_H
+
+#include "blackcoreexport.h"
+#include "context_ownaircraft.h"
+#include "blackmisc/logmessage.h"
+
+namespace BlackCore
+{
+    //! Empty context, used during shutdown/initialization
+    class BLACKCORE_EXPORT CContextOwnAircraftEmpty : public IContextOwnAircraft
+    {
+        Q_OBJECT
+
+    public:
+        //! Constructor
+        CContextOwnAircraftEmpty(CRuntime *runtime) : IContextOwnAircraft(CRuntimeConfig::NotUsed, runtime) {}
+
+    public slots:
+        //! \copydoc IContextOwnAircraft::getOwnAircraft()
+        virtual BlackMisc::Simulation::CSimulatedAircraft getOwnAircraft() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CSimulatedAircraft();
+        }
+
+        //! \copydoc IContextOwnAircraft::updatePosition
+        virtual bool updateOwnPosition(const BlackMisc::Geo::CCoordinateGeodetic &position, const BlackMisc::Aviation::CAltitude &altitude) override
+        {
+            Q_UNUSED(position);
+            Q_UNUSED(altitude);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updateCockpit
+        virtual bool updateCockpit(const BlackMisc::Aviation::CComSystem &com1, const BlackMisc::Aviation::CComSystem &com2, const BlackMisc::Aviation::CTransponder &transponder, const BlackMisc::CIdentifier &originator) override
+        {
+            Q_UNUSED(com1);
+            Q_UNUSED(com2);
+            Q_UNUSED(transponder);
+            Q_UNUSED(originator);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updateComFrequency
+        virtual bool updateActiveComFrequency(const BlackMisc::PhysicalQuantities::CFrequency &frequency, BlackMisc::Aviation::CComSystem::ComUnit comUnit, const BlackMisc::CIdentifier &originator) override
+        {
+            Q_UNUSED(frequency);
+            Q_UNUSED(comUnit);
+            Q_UNUSED(originator);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updatePilot
+        virtual bool updateOwnAircraftPilot(const BlackMisc::Network::CUser &pilot) override
+        {
+            Q_UNUSED(pilot);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updateSelcal
+        virtual bool updateSelcal(const BlackMisc::Aviation::CSelcal &selcal, const BlackMisc::CIdentifier &originator) override
+        {
+            Q_UNUSED(selcal);
+            Q_UNUSED(originator);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updateOwnCallsign
+        virtual bool updateOwnCallsign(const BlackMisc::Aviation::CCallsign &callsign) override
+        {
+            Q_UNUSED(callsign);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::updateOwnIcaoCodes
+        virtual bool updateOwnIcaoCodes(const BlackMisc::Aviation::CAircraftIcaoCode &aircraftIcaoCode, const BlackMisc::Aviation::CAirlineIcaoCode &airlineIcaoCode) override
+        {
+            Q_UNUSED(aircraftIcaoCode);
+            Q_UNUSED(airlineIcaoCode);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextOwnAircraft::setAudioOutputVolumes
+        virtual void setAudioOutputVolume(int outputVolume) override
+        {
+            Q_UNUSED(outputVolume);
+        }
+
+        //! \copydoc IContextOwnAircraft::setAudioVoiceRoomOverrideUrls
+        virtual void setAudioVoiceRoomOverrideUrls(const QString &voiceRoom1Url, const QString &voiceRoom2Url)
+        {
+            Q_UNUSED(voiceRoom1Url);
+            Q_UNUSED(voiceRoom2Url);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextOwnAircraft::enableAutomaticVoiceRoomResolution
+        virtual void enableAutomaticVoiceRoomResolution(bool enable)
+        {
+            Q_UNUSED(enable);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextOwnAircraft::parseCommandLine
+        virtual bool parseCommandLine(const QString &commandLine, const BlackMisc::CIdentifier &originator) override
+        {
+            Q_UNUSED(commandLine);
+            Q_UNUSED(originator);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+    };
+} // namespace
+
+#endif // guard
diff --git a/src/blackcore/context_runtime.cpp b/src/blackcore/context_runtime.cpp
index d53d36601..ce58238a4 100644
--- a/src/blackcore/context_runtime.cpp
+++ b/src/blackcore/context_runtime.cpp
@@ -224,7 +224,8 @@ namespace BlackCore
                 this->getCContextSimulator()->gracefulShutdown();
             }
             this->getIContextSimulator()->deleteLater();
-            this->m_contextSimulator = nullptr;
+            QDBusConnection defaultConnection("default");
+            this->m_contextSimulator = IContextSimulator::create(this, CRuntimeConfig::NotUsed, nullptr, defaultConnection);
         }
 
         // log off from network, if connected
@@ -255,14 +256,16 @@ namespace BlackCore
         {
             disconnect(this->getIContextOwnAircraft());
             this->getIContextOwnAircraft()->deleteLater();
-            this->m_contextOwnAircraft = nullptr;
+            QDBusConnection defaultConnection("default");
+            this->m_contextOwnAircraft = IContextOwnAircraft::create(this, CRuntimeConfig::NotUsed, nullptr, defaultConnection);
         }
 
         if (this->getIContextApplication())
         {
             disconnect(this->getIContextApplication());
             this->getIContextApplication()->deleteLater();
-            this->m_contextApplication = nullptr;
+            QDBusConnection defaultConnection("default");
+            this->m_contextApplication = IContextApplication::create(this, CRuntimeConfig::NotUsed, nullptr, defaultConnection);
         }
     }
 
diff --git a/src/blackcore/context_simulator.cpp b/src/blackcore/context_simulator.cpp
index f9467c440..5cd5794fb 100644
--- a/src/blackcore/context_simulator.cpp
+++ b/src/blackcore/context_simulator.cpp
@@ -10,12 +10,12 @@
 #include "context_simulator.h"
 #include "context_simulator_impl.h"
 #include "context_simulator_proxy.h"
+#include "context_simulator_empty.h"
 
 using namespace BlackMisc::PhysicalQuantities;
 
 namespace BlackCore
 {
-
     const QString &IContextSimulator::InterfaceName()
     {
         static const QString s(BLACKCORE_CONTEXTSIMULATOR_INTERFACENAME);
@@ -42,9 +42,10 @@ namespace BlackCore
         case CRuntimeConfig::LocalInDbusServer:
             return (new CContextSimulator(mode, parent))->registerWithDBus(server);
         case CRuntimeConfig::Remote:
-            return new BlackCore::CContextSimulatorProxy(BlackCore::CDBusServer::ServiceName(), conn, mode, parent);
+            return new CContextSimulatorProxy(BlackCore::CDBusServer::ServiceName(), conn, mode, parent);
+        case CRuntimeConfig::NotUsed:
         default:
-            return nullptr; // simulator not mandatory
+            return new CContextSimulatorEmpty(parent);
         }
     }
 
diff --git a/src/blackcore/context_simulator_empty.h b/src/blackcore/context_simulator_empty.h
new file mode 100644
index 000000000..5ebee3dec
--- /dev/null
+++ b/src/blackcore/context_simulator_empty.h
@@ -0,0 +1,220 @@
+/* Copyright (C) 2015
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKCORE_CONTEXTSIMULATOR_EMPTY_H
+#define BLACKCORE_CONTEXTSIMULATOR_EMPTY_H
+
+#include "blackcoreexport.h"
+#include "context_simulator.h"
+#include "blackmisc/logmessage.h"
+
+namespace BlackCore
+{
+    //! Empty context, used during shutdown/initialization
+    class BLACKCORE_EXPORT CContextSimulatorEmpty : public IContextSimulator
+    {
+        Q_OBJECT
+
+    public:
+        //! Constructor
+        CContextSimulatorEmpty(CRuntime *runtime) : IContextSimulator(CRuntimeConfig::NotUsed, runtime) {}
+
+    public slots:
+        //! \copydoc IContextSimulator::getSimulatorPluginInfo()
+        virtual BlackMisc::Simulation::CSimulatorPluginInfo getSimulatorPluginInfo() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CSimulatorPluginInfo();
+        }
+
+        //! \copydoc IContextSimulator::getAvailableSimulatorPlugins()
+        virtual BlackMisc::Simulation::CSimulatorPluginInfoList getAvailableSimulatorPlugins() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CSimulatorPluginInfoList();
+        }
+
+        //! \copydoc IContextSimulator::startSimulatorPlugin()
+        virtual bool startSimulatorPlugin(const BlackMisc::Simulation::CSimulatorPluginInfo &simulatorInfo) override
+        {
+            Q_UNUSED(simulatorInfo);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextSimulator::stopSimulatorPlugin()
+        virtual void stopSimulatorPlugin() override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextSimulator::getSimulatorStatus()
+        virtual int getSimulatorStatus() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return 0;
+        }
+
+        //! \copydoc IContextSimulator::getAirportsInRange()
+        virtual BlackMisc::Aviation::CAirportList getAirportsInRange() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Aviation::CAirportList();
+        }
+
+        //! \copydoc IContextSimulator::getInstalledModels()
+        virtual BlackMisc::Simulation::CAircraftModelList getInstalledModels() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CAircraftModelList();
+        }
+
+        //! \copydoc IContextSimulator::getInstalledModelsStartingWith
+        virtual BlackMisc::Simulation::CAircraftModelList getInstalledModelsStartingWith(const QString modelString) const override
+        {
+            Q_UNUSED(modelString);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CAircraftModelList();
+        }
+
+        //! \copydoc IContextSimulator::getInstalledModelsCount
+        virtual int getInstalledModelsCount() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return 0;
+        }
+
+        //! \copydoc IContextSimulator::reloadInstalledModels
+        virtual void reloadInstalledModels() override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextSimulator::getSimulatorSetup
+        virtual BlackMisc::Simulation::CSimulatorSetup getSimulatorSetup() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::Simulation::CSimulatorSetup();
+        }
+
+        //! \copydoc IContextSimulator::setTimeSynchronization
+        virtual bool setTimeSynchronization(bool enable, const BlackMisc::PhysicalQuantities::CTime &offset) override
+        {
+            Q_UNUSED(enable);
+            Q_UNUSED(offset);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextSimulator::isTimeSynchronized
+        virtual bool isTimeSynchronized() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextSimulator::getMaxRenderedAircraft
+        virtual int getMaxRenderedAircraft() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return 0;
+        }
+
+        //! \copydoc IContextSimulator::setMaxRenderedRemoteAircraft
+        virtual void setMaxRenderedAircraft(int number) override
+        {
+            Q_UNUSED(number);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextSimulator::setMaxRenderedDistance
+        virtual void setMaxRenderedDistance(const BlackMisc::PhysicalQuantities::CLength &distance)
+        {
+            Q_UNUSED(distance);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextSimulator::setMaxRenderedDistance
+        virtual void deleteAllRenderingRestrictions() override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc IContextSimulator::isRenderingRestricted
+        virtual bool isRenderingRestricted() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextSimulator::isRenderingEnabled
+        virtual bool isRenderingEnabled() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return false;
+        }
+
+        //! \copydoc IContextSimulator::getMaxRenderedDistance
+        virtual BlackMisc::PhysicalQuantities::CLength getMaxRenderedDistance() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::PhysicalQuantities::CLength();
+        }
+
+        //! \copydoc IContextSimulator::getRenderedDistanceBoundary
+        virtual BlackMisc::PhysicalQuantities::CLength getRenderedDistanceBoundary() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::PhysicalQuantities::CLength();
+        }
+
+        //! \copydoc IContextSimulator::getRenderRestrictionText
+        virtual QString getRenderRestrictionText() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return QString();
+        }
+
+        //! \copydoc IContextSimulator::getTimeSynchronizationOffset
+        virtual BlackMisc::PhysicalQuantities::CTime getTimeSynchronizationOffset() const override
+        {
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::PhysicalQuantities::CTime();
+        }
+
+        //! \copydoc IContextSimulator::iconForModel
+        virtual BlackMisc::CPixmap iconForModel(const QString &modelString) const override
+        {
+            Q_UNUSED(modelString);
+            logEmptyContextWarning(Q_FUNC_INFO);
+            return BlackMisc::CPixmap();
+        }
+
+        //! \copydoc IContextSimulator::highlightAircraft
+        virtual void highlightAircraft(const BlackMisc::Simulation::CSimulatedAircraft &aircraftToHighlight, bool enableHighlight, const BlackMisc::PhysicalQuantities::CTime &displayTime) override
+        {
+            Q_UNUSED(aircraftToHighlight);
+            Q_UNUSED(enableHighlight);
+            Q_UNUSED(displayTime);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+
+        //! \copydoc ISimulator::enableDebuggingMessages
+        virtual void enableDebugMessages(bool driver, bool interpolator) override
+        {
+            Q_UNUSED(driver);
+            Q_UNUSED(interpolator);
+            logEmptyContextWarning(Q_FUNC_INFO);
+        }
+    };
+} // namespace
+
+#endif // guard