clientapp.h

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#include "../util/util.h"
#include "../net/serverconnection.h"

#include <QApplication>
#include <QSharedPointer>
#include <QSettings>

/* define a macro `clientApp` that can be used anywhere in the program and returns a reference to the current ClientApp instance */
#if defined(clientApp)
#undef clientApp
#endif
#define clientApp (static_cast<ClientApp*>(QCoreApplication::instance())) // NOLINT(cppcoreguidelines-pro-type-static-cast-downcast)

class Toolbar;
class ConnectWindow;

/* this class is supposed to (after complete refactoring) to encapsulate all
 * state of the application.  At the moment, the state is distributed within
 * several widgets. With this class information access will also be easier as
 * it is possible to access the current ClientApp instance from anywhere with
 * the clientApp macro (like qApp)  macro */
class ClientApp : public QApplication
{

   Q_OBJECT

public:
   enum ConnectionMode { None, Auto, Session };

private:
   ConnectionMode _connectionMode; /* way of automatically connection to a session on startup*/
   bool _examMode;
   QString _sessionName; /* only set when _connectionMode == Session */
   Toolbar* _toolbar;
   ConnectWindow* _connectWindow;
   ServerConnection* _connection;
   QStringList _arguments;
   QString _iniPath;

   QStringList parseParameters();

public:

   ClientApp(int& argc, char** argv);

   bool isExamMode() const { return _examMode; };

   virtual QStringList arguments();

   QSharedPointer<QSettings> getSettings();

   ServerConnection* connection() const { return _connection; }

   ConnectWindow* connectWindow() const { return _connectWindow; }

   bool isConnectedToLocalManager() const { return _connection != nullptr && _connection->isLocalConnection(); }

private slots:

   void connected(ServerConnection* connection);
   void disconnected(ServerConnection* connection);

};