zenilib: zenilib/jni/external/zenilib/zeni/Zeni/Event.h Source File

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Event.h
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1 /* This file is part of the Zenipex Library (zenilib).
2 * Copyright (C) 2011 Mitchell Keith Bloch (bazald).
3 *
4 * zenilib is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * zenilib is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with zenilib. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #ifndef ZENI_EVENT_H
19 #define ZENI_EVENT_H
20
21 #include <Zeni/Hash_Map.h>
22
23 namespace Zeni {
24
25 class ZENI_DLL Event {
26 public:
27 class ZENI_DLL Handler {
28 public:
29 virtual ~Handler() {}
30
31 virtual void operator()() = 0;
32
33 virtual Handler * duplicate() const = 0;
34 };
35
36 typedef Unordered_Map<Handler *, bool> Handlers;
37
38 ~Event() {
39 clear();
40 }
41
42 void lend_Handler(Handler * const &handler) {
43 m_handlers[handler] = false;
44 }
45
46 void give_Handler(Handler * const &handler) {
47 m_handlers[handler] = true;
48 }
49
50 void fax_Handler(Handler * const &handler) {
51 give_Handler(handler->duplicate());
52 }
53
54 void remove_Handler(Handler * const &handler) {
55 Handlers::iterator ht = m_handlers.find(handler);
56
57 if(ht != m_handlers.end()) {
58 if(ht->second)
59 delete ht->first;
60
61 m_handlers.erase(ht);
62 }
63 }
64
65 void fire() {
66 const Handlers m_copy = m_handlers;
67 for(Handlers::const_iterator ht = m_copy.begin(), hend = m_copy.end(); ht != hend; ++ht)
68 (*ht->first)();
69 }
70
71 void clear() {
72 for(Handlers::const_iterator ht = m_handlers.begin(), hend = m_handlers.end(); ht != hend; ++ht)
73 if(ht->second)
74 delete ht->first;
75
76 m_handlers.clear();
77 }
78
79 private:
80 #ifdef _WINDOWS
81 #pragma warning( push )
82 #pragma warning( disable : 4251 )
83 #endif
84 Handlers m_handlers;
85 #ifdef _WINDOWS
86 #pragma warning( pop )
87 #endif
88 };
89
90 }
91
92 #endif
Zeni::Event::give_Handler
void give_Handler(Handler *const &handler)
Definition: Event.h:46
Zeni::Event::clear
void clear()
Definition: Event.h:71
Zeni::Event::~Event
~Event()
Definition: Event.h:38
Zeni::Event::Handler::duplicate
virtual Handler * duplicate() const =0
Zeni::Event::fax_Handler
void fax_Handler(Handler *const &handler)
Definition: Event.h:50
Zeni::Unordered_Map< Handler *, bool >
Zeni::Event
Definition: Event.h:25
Zeni::Event::Handlers
Unordered_Map< Handler *, bool > Handlers
Definition: Event.h:36
Zeni::Event::fire
void fire()
Definition: Event.h:65
Zeni::Event::Handler::~Handler
virtual ~Handler()
Definition: Event.h:29
Zeni::Event::remove_Handler
void remove_Handler(Handler *const &handler)
Definition: Event.h:54
Zeni::Event::Handler
Definition: Event.h:27
Hash_Map.h
Zeni::Event::lend_Handler
void lend_Handler(Handler *const &handler)
Definition: Event.h:42