chatserver.h Example File

chatserver-cpp/chatserver.h

  /****************************************************************************
  **
  ** Copyright (C) 2014 Klar��lvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
  ** Contact: http://www.qt.io/licensing/
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  ** This file is part of the QtWebChannel module of the Qt Toolkit.
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  #ifndef ChatServer_H
  #define ChatServer_H

  #include <QObject>
  #include <QStringList>

  class QTimer;

  class ChatServer : public QObject
  {
      Q_OBJECT

      Q_PROPERTY(QStringList userList READ userList NOTIFY userListChanged)

  public:
      explicit ChatServer(QObject *parent = 0);
      virtual ~ChatServer();

  public:
      //a user logs in with the given username
      Q_INVOKABLE bool login(const QString& userName);

      //the user logs out, will be removed from userlist immediately
      Q_INVOKABLE bool logout(const QString& userName);

      //a user sends a message to all other users
      Q_INVOKABLE bool sendMessage(const QString& user, const QString& msg);

      //response of the keep alive signal from a client.
      // This is used to detect disconnects.
      Q_INVOKABLE void keepAliveResponse(const QString& user);

      QStringList userList() const;

  protected slots:
      void sendKeepAlive();
      void checkKeepAliveResponses();

  signals:
      void newMessage(QString time, QString user, QString msg);
      void keepAlive();
      void userListChanged();
      void userCountChanged();

  private:
      QStringList m_userList;
      QStringList m_stillAliveUsers;
      QTimer* m_keepAliveCheckTimer;
  };


  #endif // ChatServer_H