refs #239, added a helper class for timer based pulls

* changed user componet to use new component
* all new components (aircraft, ATC stations) will use this timer
* it is implemented as "has a" timer based component, as inheriting from 2 QObjects would be problematic

src/blackgui/timerbasedcomponent.cpp

@@ -0,0 +1,29 @@
+#include "timerbasedcomponent.h"
+
+namespace BlackGui
+{
+
+    CTimerBasedComponent::CTimerBasedComponent(const char *slot, QObject *parent) :
+        QObject(parent), m_timer(nullptr)
+    {
+        this->m_timer = new QTimer(this);
+        this->connect(this->m_timer, SIGNAL(timeout()), parent, slot);
+    }
+
+    CTimerBasedComponent::~CTimerBasedComponent()
+    {
+        this->m_timer->stop();
+        this->disconnect(this->parent());
+    }
+
+    void CTimerBasedComponent::setUpdateInterval(int milliSeconds)
+    {
+        if (milliSeconds < 100)
+            this->m_timer->stop();
+        else
+        {
+            this->m_timer->setInterval(milliSeconds);
+            if (!this->m_timer->isActive()) this->m_timer->start();
+        }
+    }
+} // guard

src/blackgui/timerbasedcomponent.h

@@ -0,0 +1,34 @@
+#ifndef BLACKGUI_TIMERBASEDCOMPONENT_H
+#define BLACKGUI_TIMERBASEDCOMPONENT_H
+
+#include <QTimer>
+
+namespace BlackGui
+{
+
+    //! Timer based componenet
+    class CTimerBasedComponent: public QObject
+    {
+    public:
+        //! Constructor
+        CTimerBasedComponent(const char *slot, QObject *parent);
+
+        //! Destructor
+        ~CTimerBasedComponent();
+
+    public slots:
+        //! Update time, time < 100 stops updates
+        void setUpdateInterval(int milliSeconds);
+
+        //! Update time
+        void setUpdateIntervalSeconds(int seconds) { this->setUpdateInterval(1000 * seconds); }
+
+        //! Stop timer
+        void stopTimer() { this->setUpdateInterval(-1); }
+
+    private:
+        QTimer *m_timer;
+    };
+}
+
+#endif // guard

src/blackgui/usercomponent.cpp

@@ -3,13 +3,11 @@
 
 namespace BlackGui
 {
-
     CUserComponent::CUserComponent(QWidget *parent) :
-        QTabWidget(parent), CRuntimeBasedComponent(nullptr, false), ui(new Ui::CUserComponent), m_timer(nullptr)
+        QTabWidget(parent), CRuntimeBasedComponent(nullptr, false), ui(new Ui::CUserComponent), m_timerComponent(nullptr)
     {
         ui->setupUi(this);
-        this->m_timer = new QTimer(this);
-        this->connect(this->m_timer, &QTimer::timeout, this, &CUserComponent::update);
+        this->m_timerComponent = new CTimerBasedComponent(SLOT(update()), this);
     }
 
     CUserComponent::~CUserComponent()
@@ -29,15 +27,4 @@ namespace BlackGui
             this->ui->tvp_AllUsers->update(this->getIContextNetwork()->getUsers());
         }
     }
-
-    void CUserComponent::setUpdateInterval(int milliSeconds)
-    {
-        if (milliSeconds < 100)
-            this->m_timer->stop();
-        else
-        {
-            this->m_timer->setInterval(milliSeconds);
-            if (!this->m_timer->isActive()) this->m_timer->start();
-        }
-    }
 } // guard

src/blackgui/usercomponent.h

@@ -2,6 +2,7 @@
 #define BLACKGUI_USERCOMPONENT_H
 
 #include "blackgui/runtimebasedcomponent.h"
+#include "blackgui/timerbasedcomponent.h"
 #include "blackmisc/nwuserlist.h"
 
 #include <QTabWidget>
@@ -24,19 +25,25 @@ namespace BlackGui
         //! Destructor
         ~CUserComponent();
 
+        //! Timer for updating
+        CTimerBasedComponent *getTimerComponent() { return this->m_timerComponent; }
+
     public slots:
         //! Update users
         void update();
 
-        //! Update time, time < 100 stops updates
-        void setUpdateInterval(int milliSeconds);
+        //! \copydoc CTimerBasedComponent::setUpdateIntervalSeconds
+        void setUpdateIntervalSeconds(int seconds) { Q_ASSERT(this->m_timerComponent); this->m_timerComponent->setUpdateIntervalSeconds(seconds); }
 
-        //! Update time
-        void setUpdateIntervalSeconds(int seconds) { this->setUpdateInterval(1000 * seconds); }
+        //! \copydoc CTimerBasedComponent::setUpdateInterval
+        void setUpdateInterval(int milliSeconds) { Q_ASSERT(this->m_timerComponent); this->m_timerComponent->setUpdateInterval(milliSeconds); }
+
+        //! \copydoc CTimerBasedComponent::stopTimer
+        void stopTimer() { Q_ASSERT(this->m_timerComponent); this->m_timerComponent->stopTimer(); }
 
     private:
         Ui::CUserComponent *ui;
-        QTimer *m_timer;
+        CTimerBasedComponent *m_timerComponent;
     };
 }