blob: 4343496902a612e24ba53b6df05b72f07215fc43 (
plain)
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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
* Event.h
*
* Created on: Sep 5, 2014
* Author: Cameron Karlsson
*/
#ifndef EVENT_H_
#define EVENT_H_
#include <list>
#include <functional>
#include <cstdint>
namespace nmea {
template<class> class EventHandler;
template<class> class Event;
template<typename... Args>
class EventHandler<void(Args...)>
{
friend Event<void(Args...)>;
private:
// Typenames
typename Event<void(Args...)>::ListIterator _iterator;
// Static members
static uint64_t LastID;
// Properties
uint64_t ID;
std::function<void(Args...)> handler;
// Functions
void _copy(const EventHandler& ref){
if (&ref != this){
_iterator = ref._iterator;
handler = ref.handler;
ID = ref.ID;
}
}
public:
// Typenames
typedef void(*CFunctionPointer)(Args...);
// Static members
// (none)
// Properties
// (none)
// Functions
EventHandler(std::function<void(Args...)> h) : _iterator(), handler(h), ID(++LastID)
{}
EventHandler(const EventHandler& ref){
_copy(ref);
}
virtual ~EventHandler(){};
EventHandler& operator=(const EventHandler& ref){
_copy(ref);
return *this;
}
void operator() (Args... args){
handler(args...);
}
bool operator==(const EventHandler& ref){
return ID == ref.ID;
}
bool operator!=(const EventHandler& ref){
return ID != ref.ID;
}
uint64_t getID(){
return ID;
}
// Returns function pointer to the underlying function
// or null if it's not a function but implements operator()
CFunctionPointer* getFunctionPointer(){
CFunctionPointer* ptr = handler.template target<CFunctionPointer>();
return ptr;
}
};
template<typename... Args>
uint64_t EventHandler<void(Args...)>::LastID = 0;
template <typename ... Args>
class Event<void(Args...)>
{
friend EventHandler<void(Args...)>;
private:
// Typenames
typedef typename std::list<EventHandler<void(Args...)>>::iterator ListIterator;
// Static members
// (none)
// Properties
std::list<EventHandler<void(Args...)>> handlers;
//Functions
void _copy(const Event& ref){
if (&ref != this){
handlers = ref.handlers;
}
};
bool removeHandler(ListIterator handlerIter) {
if (handlerIter == handlers.end()){
return false;
}
handlers.erase(handlerIter);
return true;
};
public:
// Typenames
// (none)
// Static members
// (none)
// Properties
bool enabled;
// Functions
Event() : enabled(true)
{}
virtual ~Event()
{}
Event(const Event& ref) {
_copy(ref);
}
void call(Args... args) {
if (!enabled) { return; }
for (auto h = handlers.begin(); h != handlers.end(); h++)
{
(*h)(args...);
}
}
EventHandler<void(Args...)> registerHandler(EventHandler<void(Args...)> handler) {
bool found = false;
for (auto h = handlers.begin(); h != handlers.end(); h++)
{
if ((*h) == handler) {
found = true;
break;
}
}
if (!found)
{
ListIterator itr = handlers.insert(handlers.end(), handler);
handler._iterator = itr;
}
return handler;
}
EventHandler<void(Args...)> registerHandler(std::function<void(Args...)> handler) {
EventHandler<void(Args...)> wrapper(handler);
ListIterator itr = handlers.insert(handlers.end(), wrapper);
wrapper._iterator = itr;
return wrapper;
}
bool removeHandler(EventHandler<void(Args...)>& handler) {
bool sts = removeHandler(handler._iterator);
handler._iterator = handlers.end();
return sts;
};
void clear(){
for (auto h = handlers.begin(); h != handlers.end(); h++)
{
(*h)._iterator = handlers.end();
}
handlers.clear();
};
void operator ()(Args... args) { return call(args...); };
EventHandler<void(Args...)> operator +=(EventHandler<void(Args...)> handler) { return registerHandler(handler); };
EventHandler<void(Args...)> operator +=(std::function<void(Args...)> handler) { return registerHandler(handler); };
bool operator -=(EventHandler<void(Args...)>& handler) { return removeHandler(handler); };
bool operator -=(uint64_t handlerID) { return removeHandler(handlerID); };
EventHandler<void(Args...)>& operator =(const EventHandler<void(Args...)>& ref){
_copy(ref);
return *this;
};
};
}
#endif /* EVENT_H_ */
|
