Revision control
++ // Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #ifndef CHATSERVER_H
++ #define CHATSERVER_H
++
++ #include <QObject>
++ #include <QStringList>
++
++ QT_BEGIN_NAMESPACE
++ class QTimer;
++ QT_END_NAMESPACE
++
++ class ChatServer : public QObject
++ {
++ Q_OBJECT
++
++ Q_PROPERTY(QStringList userList READ userList NOTIFY userListChanged)
++
++ public:
++ explicit ChatServer(QObject *parent = nullptr);
++ 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