1/****************************************************************************
2**
3** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWebChannel module of the Qt Toolkit.
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8** $QT_BEGIN_LICENSE:BSD$
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49****************************************************************************/
50
51#ifndef CHATSERVER_H
52#define CHATSERVER_H
53
54#include <QObject>
55#include <QStringList>
56
57QT_BEGIN_NAMESPACE
58class QTimer;
59QT_END_NAMESPACE
60
61class ChatServer : public QObject
62{
63 Q_OBJECT
64
65 Q_PROPERTY(QStringList userList READ userList NOTIFY userListChanged)
66
67public:
68 explicit ChatServer(QObject *parent = nullptr);
69 virtual ~ChatServer();
70
71public:
72 //a user logs in with the given username
73 Q_INVOKABLE bool login(const QString &userName);
74
75 //the user logs out, will be removed from userlist immediately
76 Q_INVOKABLE bool logout(const QString &userName);
77
78 //a user sends a message to all other users
79 Q_INVOKABLE bool sendMessage(const QString &user, const QString &msg);
80
81 //response of the keep alive signal from a client.
82 // This is used to detect disconnects.
83 Q_INVOKABLE void keepAliveResponse(const QString &user);
84
85 QStringList userList() const;
86
87protected slots:
88 void sendKeepAlive();
89 void checkKeepAliveResponses();
90
91signals:
92 void newMessage(QString time, QString user, QString msg);
93 void keepAlive();
94 void userListChanged();
95 void userCountChanged();
96
97private:
98 QStringList m_userList;
99 QStringList m_stillAliveUsers;
100 QTimer *m_keepAliveCheckTimer;
101};
102
103#endif // CHATSERVER_H
104

source code of qtwebchannel/examples/webchannel/chatserver-cpp/chatserver.h