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
|
/*
* DNN - Data News Network
*
* by Stephane Chatty
*
* Copyright 1993-1996
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* Reactions.
*
* $Id$
* $CurLog$
*/
#ifndef DnnReaction_H_
#define DnnReaction_H_
#include "ccu/List.h"
class DnnTrigger;
class DnnEvent;
class DnnBaseReaction {
friend class DnnTrigger;
public:
enum REL_PRIORITY { isFirstPriority, isNormalPriority, isLastPriority };
protected:
DnnBaseReaction ();
CcuListOf <DnnTrigger> Triggers;
CcuListOf <DnnTrigger> Grabbed;
void Forget (DnnTrigger&);
public:
virtual ~DnnBaseReaction ();
void SubscribeTo (DnnTrigger&, REL_PRIORITY = isNormalPriority);
void UnsubscribeTo (DnnTrigger&);
void Grab (DnnTrigger&);
void Release (DnnTrigger&);
virtual void Manage (DnnEvent&);
};
typedef void (*DnnHandlingFunction) (DnnEvent&);
class DnnCallback : public DnnBaseReaction {
protected:
DnnHandlingFunction Handler;
public:
DnnCallback (DnnHandlingFunction);
~DnnCallback ();
void Manage (DnnEvent&);
};
template <class T> class DnnReactionOf : public DnnBaseReaction {
protected:
T& Object;
void (T::*Reaction) (DnnEvent&);
public:
DnnReactionOf (T& o, void (T::*r) (DnnEvent&)) : DnnBaseReaction (), Object (o), Reaction (r) {}
~DnnReactionOf () {}
void Manage (DnnEvent& ev) { (Object.*Reaction) (ev); }
};
#define SpecializedReaction(R,S) \
class R : public DnnBaseReaction { \
protected: \
S& Body; \
void (S::*React) (DnnEvent&); \
public: \
R (S& s, void (S::*sc) (DnnEvent&)) : DnnBaseReaction (), Body (s), React (sc) {} \
~R () {} \
void Manage (DnnEvent& ev) { (Body.*React) (ev); } \
};
/* Attempt at having reactions that locate the object which should be activated.
DnnObjectReactionOf should be renamed DnnReactionOf,
and DnnReactionOf should be renamed DnnBasicReactionOf */
class DnnObjectReaction : public DnnBaseReaction {
protected:
virtual void* LocateObject (DnnEvent&) = 0;
public:
DnnObjectReaction () : DnnBaseReaction () {}
~DnnObjectReaction () {}
};
template <class T> class DnnObjectReactionOf : public DnnObjectReaction {
protected:
void (T::*Reaction) (DnnEvent&);
public:
DnnObjectReactionOf (void (T::*r) (DnnEvent&)) : DnnObjectReaction (), Reaction (r) {}
~DnnObjectReactionOf () {}
void Manage (DnnEvent& ev) { T* o = (T*) LocateObject (ev); (o->*Reaction) (ev); }
};
#if 0
template <class T> class XtvReflexOf : public DnnObjectReactionOf <T> {
protected:
void* LocateObject (DnnEvent& ev) { return ((XtvEvent*)&ev)->GetTarget (); }
public:
XtvReflexOf (void (T::*r) (DnnEvent&)) : DnnObjectReactionOf <T> (r) {}
};
#endif
#endif /* DnnReaction_H_ */
|
