callback_1.h
1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2013 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Magnus Norddahl
27 */
28 
29 
30 #pragma once
31 
32 #include "../System/exception.h"
33 #include <memory>
34 
35 namespace clan
36 {
39 
41 template <typename RetVal, typename P1>
43 {
44 public:
45  virtual ~Callback_Impl_1()
46  {
47  }
48 
49  virtual RetVal invoke(P1 p1) const = 0;
50 };
51 
53 template <typename RetVal, typename P1>
54 class Callback_Impl_1_static : public Callback_Impl_1<RetVal, P1>
55 {
56 public:
59  {
60  }
61 
62  RetVal invoke(P1 p1) const
63  {
64  return static_func(p1);
65  }
66 
67  RetVal (*static_func)(P1);
68 };
69 
71 template <typename RetVal, typename P1, typename UserData>
72 class Callback_Impl_1_static_user : public Callback_Impl_1<RetVal, P1>
73 {
74 public:
76  RetVal (*static_func)(P1, UserData), const UserData &user_data)
77  : static_func(static_func), user_data(user_data)
78  {
79  }
80 
81  RetVal invoke(P1 p1) const
82  {
83  return static_func(p1, user_data);
84  }
85 
86  RetVal (*static_func)(P1, UserData);
87 
89 };
90 
92 template <typename RetVal, typename P1, typename InstanceClass>
93 class Callback_Impl_1_member : public Callback_Impl_1<RetVal, P1>
94 {
95 public:
97  RetVal (InstanceClass::*member_func)(P1))
98  : instance(instance), member_func(member_func)
99  {
100  }
101 
102  RetVal invoke(P1 p1) const
103  {
104  return (instance->*member_func)(p1);
105  }
106 
107  InstanceClass *instance;
108 
109  RetVal (InstanceClass::*member_func)(P1);
110 };
111 
113 template <typename RetVal, typename P1, typename InstanceClass, typename UserData>
115 {
116 public:
117  Callback_Impl_1_member_user(InstanceClass *instance,
118  RetVal (InstanceClass::*member_func)(P1, UserData), const UserData &user_data)
119  : instance(instance), member_func(member_func), user_data(user_data)
120  {
121  }
122 
123  RetVal invoke(P1 p1) const
124  {
125  return (instance->*member_func)(p1, user_data);
126  }
127 
128  InstanceClass *instance;
129 
130  RetVal (InstanceClass::*member_func)(P1, UserData);
131 
133 };
134 
136 template <typename RetVal, class P1, class Functor>
137 class Callback_Impl_1_functor : public Callback_Impl_1<RetVal, P1>
138 {
139 public:
141  : functor(functor)
142  {
143  }
144 
145  RetVal invoke(P1 p1) const
146  {
147  return functor(p1);
148  }
149 
150  Functor functor;
151 };
152 
155 template <typename RetVal, typename P1>
157 {
158 public:
160  {
161  }
162 
163  Callback_1(const Callback_1 &copy)
164  : impl(copy.impl)
165  {
166  }
167 
169  : impl(impl)
170  {
171  }
172 
173  Callback_1(RetVal (*function)(P1))
174  : impl(new Callback_Impl_1_static<RetVal, P1>(function))
175  {
176  }
177 
178  template<typename UserData>
179  Callback_1(RetVal (*function)(P1, UserData), const UserData &user_data)
180  : impl(new Callback_Impl_1_static_user<RetVal, P1, UserData>(function, user_data))
181  {
182  }
183 
184  template<class InstanceClass>
185  Callback_1(InstanceClass *instance, RetVal (InstanceClass::*function)(P1))
186  : impl(new Callback_Impl_1_member<RetVal, P1, InstanceClass>(instance, function))
187  {
188  }
189 
190  template<class InstanceClass, typename UserData>
191  Callback_1(InstanceClass *instance, RetVal (InstanceClass::*function)(P1, UserData), const UserData &user_data)
192  : impl(new Callback_Impl_1_member_user<RetVal, P1, InstanceClass, UserData>(instance, function, user_data))
193  {
194  }
195 
196  void set(RetVal (*function)(P1))
197  {
198  impl = std::shared_ptr< Callback_Impl_1<RetVal, P1> >(new Callback_Impl_1_static<RetVal, P1>(function));
199  }
200 
201  template<typename UserData>
202  void set(RetVal (*function)(P1, UserData), const UserData &user_data)
203  {
204  impl = std::shared_ptr< Callback_Impl_1<RetVal, P1> >(new Callback_Impl_1_static_user<RetVal, P1, UserData>(function, user_data));
205  }
206 
207  template<class InstanceClass>
208  void set(InstanceClass *instance, RetVal (InstanceClass::*function)(P1))
209  {
210  impl = std::shared_ptr< Callback_Impl_1<RetVal, P1> >(new Callback_Impl_1_member<RetVal, P1, InstanceClass>(instance, function));
211  }
212 
213  template<class InstanceClass, typename UserData>
214  void set(InstanceClass *instance, RetVal (InstanceClass::*function)(P1, UserData), const UserData &user_data)
215  {
216  impl = std::shared_ptr< Callback_Impl_1<RetVal, P1> >(new Callback_Impl_1_member_user<RetVal, P1, InstanceClass, UserData>(instance, function, user_data));
217  }
218 
219  void clear()
220  {
221  impl = std::shared_ptr< Callback_Impl_1<RetVal, P1> >();
222  }
223 
224  RetVal invoke(P1 p1) const
225  {
226  return impl->invoke(p1);
227  }
228 
229  bool is_null() const
230  {
231  return !impl;
232  }
233 
234 private:
235  std::shared_ptr< Callback_Impl_1<RetVal, P1> > impl;
236 };
237 
240 template <typename RetVal, typename P1>
241 class Callback_1_functor : public Callback_1<RetVal, P1>
242 {
243 public:
245  {
246  }
247 
249  : Callback_1<RetVal, P1>(copy)
250  {
251  }
252 
253  template<class Functor>
254  Callback_1_functor(Functor functor)
255  : Callback_1<RetVal, P1>(new Callback_Impl_1_functor<RetVal, P1, Functor>(functor))
256  {
257  }
258 
259 };
260 
261 }
262 
RetVal invoke(P1 p1) const
Definition: callback_1.h:62
Callback_1(RetVal(*function)(P1))
Definition: callback_1.h:173
UserData user_data
Definition: callback_1.h:132
Callback_Impl_1_functor(Functor functor)
Definition: callback_1.h:140
bool is_null() const
Definition: callback_1.h:229
Callback_1_functor(Functor functor)
Definition: callback_1.h:254
Callback_1()
Definition: callback_1.h:159
(Internal ClanLib Class)
Definition: callback_1.h:93
RetVal(InstanceClass::* member_func)(P1)
Definition: callback_1.h:109
(Internal ClanLib Class)
Definition: callback_1.h:72
void set(RetVal(*function)(P1))
Definition: callback_1.h:196
void set(InstanceClass *instance, RetVal(InstanceClass::*function)(P1))
Definition: callback_1.h:208
(Internal ClanLib Class)
Definition: callback_1.h:137
InstanceClass * instance
Definition: callback_1.h:107
Callback_Impl_1_member(InstanceClass *instance, RetVal(InstanceClass::*member_func)(P1))
Definition: callback_1.h:96
Callback_1(RetVal(*function)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:179
UserData user_data
Definition: callback_1.h:88
RetVal invoke(P1 p1) const
Definition: callback_1.h:145
RetVal(InstanceClass::* member_func)(P1, UserData)
Definition: callback_1.h:130
Callback_1(Callback_Impl_1< RetVal, P1 > *impl)
Definition: callback_1.h:168
Callback_1_functor(const Callback_1_functor &copy)
Definition: callback_1.h:248
RetVal invoke(P1 p1) const
Definition: callback_1.h:224
Definition: userdata.h:47
(Internal ClanLib Class)
Definition: callback_1.h:114
Callback_1_functor()
Definition: callback_1.h:244
Callback_1(const Callback_1 &copy)
Definition: callback_1.h:163
RetVal invoke(P1 p1) const
Definition: callback_1.h:81
virtual ~Callback_Impl_1()
Definition: callback_1.h:45
RetVal(* static_func)(P1)
Definition: callback_1.h:67
Callback_1(InstanceClass *instance, RetVal(InstanceClass::*function)(P1))
Definition: callback_1.h:185
RetVal(* static_func)(P1, UserData)
Definition: callback_1.h:86
virtual RetVal invoke(P1 p1) const =0
RetVal invoke(P1 p1) const
Definition: callback_1.h:102
(Internal ClanLib Class)
Definition: callback_1.h:42
(Internal ClanLib Class)
Definition: callback_1.h:54
RetVal invoke(P1 p1) const
Definition: callback_1.h:123
void set(InstanceClass *instance, RetVal(InstanceClass::*function)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:214
Callback_Impl_1_static_user(RetVal(*static_func)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:75
void clear()
Definition: callback_1.h:219
InstanceClass * instance
Definition: callback_1.h:128
Callback_1(InstanceClass *instance, RetVal(InstanceClass::*function)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:191
Callback_Impl_1_member_user(InstanceClass *instance, RetVal(InstanceClass::*member_func)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:117
Callback_1_functor.
Definition: callback_1.h:241
void set(RetVal(*function)(P1, UserData), const UserData &user_data)
Definition: callback_1.h:202
Callback_Impl_1_static(RetVal(*static_func)(P1))
Definition: callback_1.h:57
Functor functor
Definition: callback_1.h:150
Callback_1.
Definition: callback_1.h:156