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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/common/persist.cpp | |
3 | // Purpose: common persistence support classes | |
4 | // Author: Vadim Zeitlin | |
5 | // Created: 2009-01-20 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org> | |
8 | // Licence: wxWindows licence | |
9 | /////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | // ============================================================================ | |
12 | // declarations | |
13 | // ============================================================================ | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // headers | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | // for compilers that support precompilation, includes "wx.h". | |
20 | #include "wx/wxprec.h" | |
21 | ||
22 | #ifdef __BORLANDC__ | |
23 | #pragma hdrstop | |
24 | #endif | |
25 | ||
26 | #if wxUSE_CONFIG | |
27 | ||
28 | #ifndef WX_PRECOMP | |
29 | #endif // WX_PRECOMP | |
30 | ||
31 | #include "wx/persist.h" | |
32 | ||
33 | namespace | |
34 | { | |
35 | ||
36 | wxPersistenceManager* gs_manager = NULL; | |
37 | ||
38 | } // anonymous namespace | |
39 | ||
40 | // ============================================================================ | |
41 | // wxPersistenceManager implementation | |
42 | // ============================================================================ | |
43 | ||
44 | /* static */ | |
45 | void wxPersistenceManager::Set(wxPersistenceManager& manager) | |
46 | { | |
47 | gs_manager = &manager; | |
48 | } | |
49 | ||
50 | /* static */ | |
51 | wxPersistenceManager& wxPersistenceManager::Get() | |
52 | { | |
53 | if ( !gs_manager ) | |
54 | { | |
55 | static wxPersistenceManager s_manager; | |
56 | ||
57 | gs_manager = &s_manager; | |
58 | } | |
59 | ||
60 | return *gs_manager; | |
61 | } | |
62 | ||
63 | wxPersistenceManager::~wxPersistenceManager() | |
64 | { | |
65 | } | |
66 | ||
67 | wxString | |
68 | wxPersistenceManager::GetKey(const wxPersistentObject& who, | |
69 | const wxString& name) const | |
70 | { | |
71 | wxString key("Persistent_Options"); // TODO: make this configurable | |
72 | key << wxCONFIG_PATH_SEPARATOR << who.GetKind() | |
73 | << wxCONFIG_PATH_SEPARATOR << who.GetName() | |
74 | << wxCONFIG_PATH_SEPARATOR << name; | |
75 | ||
76 | return key; | |
77 | } | |
78 | ||
79 | wxPersistentObject *wxPersistenceManager::Find(void *obj) const | |
80 | { | |
81 | const wxPersistentObjectsMap::const_iterator | |
82 | it = m_persistentObjects.find(obj); | |
83 | return it == m_persistentObjects.end() ? NULL : it->second; | |
84 | } | |
85 | ||
86 | wxPersistentObject * | |
87 | wxPersistenceManager::Register(void *obj, wxPersistentObject *po) | |
88 | { | |
89 | if ( wxPersistentObject *old = Find(obj) ) | |
90 | { | |
91 | wxFAIL_MSG( "object is already registered" ); | |
92 | ||
93 | delete po; // still avoid the memory leaks | |
94 | return old; | |
95 | } | |
96 | ||
97 | m_persistentObjects[obj] = po; | |
98 | ||
99 | return po; | |
100 | } | |
101 | ||
102 | void wxPersistenceManager::Unregister(void *obj) | |
103 | { | |
104 | wxPersistentObjectsMap::iterator it = m_persistentObjects.find(obj); | |
105 | wxCHECK_RET( it != m_persistentObjects.end(), "not registered" ); | |
106 | ||
107 | wxPersistentObject * const po = it->second; | |
108 | m_persistentObjects.erase(it); | |
109 | delete po; | |
110 | } | |
111 | ||
112 | void wxPersistenceManager::Save(void *obj) | |
113 | { | |
114 | if ( !m_doSave ) | |
115 | return; | |
116 | ||
117 | wxPersistentObjectsMap::iterator it = m_persistentObjects.find(obj); | |
118 | wxCHECK_RET( it != m_persistentObjects.end(), "not registered" ); | |
119 | ||
120 | it->second->Save(); | |
121 | } | |
122 | ||
123 | bool wxPersistenceManager::Restore(void *obj) | |
124 | { | |
125 | if ( !m_doRestore ) | |
126 | return false; | |
127 | ||
128 | wxPersistentObjectsMap::iterator it = m_persistentObjects.find(obj); | |
129 | wxCHECK_MSG( it != m_persistentObjects.end(), false, "not registered" ); | |
130 | ||
131 | return it->second->Restore(); | |
132 | } | |
133 | ||
134 | namespace | |
135 | { | |
136 | ||
137 | template <typename T> | |
138 | inline bool | |
139 | DoSaveValue(wxConfigBase *conf, const wxString& key, T value) | |
140 | { | |
141 | return conf && conf->Write(key, value); | |
142 | } | |
143 | ||
144 | template <typename T> | |
145 | bool | |
146 | DoRestoreValue(wxConfigBase *conf, const wxString& key, T *value) | |
147 | { | |
148 | return conf && conf->Read(key, value); | |
149 | } | |
150 | ||
151 | } // anonymous namespace | |
152 | ||
153 | #define wxPERSIST_DEFINE_SAVE_RESTORE_FOR(Type) \ | |
154 | bool wxPersistenceManager::SaveValue(const wxPersistentObject& who, \ | |
155 | const wxString& name, \ | |
156 | Type value) \ | |
157 | { \ | |
158 | return DoSaveValue(GetConfig(), GetKey(who, name), value); \ | |
159 | } \ | |
160 | \ | |
161 | bool wxPersistenceManager::RestoreValue(const wxPersistentObject& who, \ | |
162 | const wxString& name, \ | |
163 | Type *value) \ | |
164 | { \ | |
165 | return DoRestoreValue(GetConfig(), GetKey(who, name), value); \ | |
166 | } | |
167 | ||
168 | wxPERSIST_DEFINE_SAVE_RESTORE_FOR(bool) | |
169 | wxPERSIST_DEFINE_SAVE_RESTORE_FOR(int) | |
170 | wxPERSIST_DEFINE_SAVE_RESTORE_FOR(long) | |
171 | wxPERSIST_DEFINE_SAVE_RESTORE_FOR(wxString) | |
172 | ||
173 | #undef wxPERSIST_DEFINE_SAVE_RESTORE_FOR | |
174 | ||
175 | #endif // wxUSE_CONFIG |