1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2008 Emweb bvba, Heverlee, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef SIMPLECHATSERVER_H_
#define SIMPLECHATSERVER_H_
#include <Wt/WObject>
#include <Wt/WSignal>
#include <Wt/WString>
#include <set>
#include <boost/thread.hpp>
/**
* @addtogroup chatexample
*/
/*@{*/
/*! \brief Encapsulate a chat event.
*/
class ChatEvent
{
public:
/*! \brief Enumeration for the event type.
*/
enum Type { Login, Logout, Message };
/*! \brief Get the event type.
*/
Type type() const { return type_; }
/*! \brief Get the user who caused the event.
*/
const Wt::WString& user() const { return user_; }
/*! \brief Get the message of the event.
*/
const Wt::WString& message() const { return message_; }
/*! \brief Get the message formatted as HTML, rendered for the given user.
*/
const Wt::WString formattedHTML(const Wt::WString& user) const;
private:
Type type_;
Wt::WString user_;
Wt::WString message_;
/*
* Both user and html will be formatted as html
*/
ChatEvent(const Wt::WString& user, const Wt::WString& message)
: type_(Message), user_(user), message_(message)
{ }
ChatEvent(Type type, const Wt::WString& user)
: type_(type), user_(user)
{ }
friend class SimpleChatServer;
};
/*! \brief A simple chat server
*/
class SimpleChatServer : public Wt::WObject
{
public:
/*! \brief Create a new chat server.
*/
SimpleChatServer();
/*! \brief Try to login with given user name.
*
* Returns false if the login was not successfull.
*/
bool login(const Wt::WString& user);
/*! \brief Logout from the server.
*/
void logout(const Wt::WString& user);
/*! \brief Get a suggestion for a guest user name.
*/
Wt::WString suggestGuest();
/*! \brief Send a message on behalve of a user.
*/
void sendMessage(const Wt::WString& user, const Wt::WString& message);
/*! \brief %Signal that will convey chat events.
*
* Every client should connect to this signal, and process events.
*/
Wt::Signal<ChatEvent>& chatEvent() { return chatEvent_; }
/*! \brief Typedef for a collection of user names.
*/
typedef std::set<Wt::WString> UserSet;
/*! \brief Get the users currently logged in.
*/
UserSet users();
private:
Wt::Signal<ChatEvent> chatEvent_;
boost::mutex mutex_;
UserSet users_;
};
/*@}*/
#endif // SIMPLECHATSERVER_H_
|
