1 /*
2 * Copyright (C) 2011, 2014 Nicolas Bonnefon and other contributors
3 *
4 * This file is part of glogg.
5 *
6 * glogg is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * glogg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with glogg. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 // Implements PersistentInfo, a singleton class which store/retrieve objects
21 // to persistent storage.
22
23 #include "persistentinfo.h"
24
25 #include <cassert>
26 #include <QStringList>
27
28 #include "log.h"
29 #include "persistable.h"
30
PersistentInfo()31 PersistentInfo::PersistentInfo()
32 {
33 settings_ = NULL;
34 initialised_ = false;
35 }
36
~PersistentInfo()37 PersistentInfo::~PersistentInfo()
38 {
39 if ( initialised_ )
40 delete settings_;
41 }
42
migrateAndInit()43 void PersistentInfo::migrateAndInit()
44 {
45 assert( initialised_ == false );
46 #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
47 // On Windows, we use .ini files and import from the registry if no
48 // .ini file is found (glogg <= 0.9 used the registry).
49
50 // This store the config file in %appdata%
51 settings_ = new QSettings( QSettings::IniFormat,
52 QSettings::UserScope, "glogg", "glogg" );
53
54 if ( settings_->childKeys().count() == 0 ) {
55 LOG(logWARNING) << "INI file empty, trying to import from registry";
56 QSettings registry( "glogg", "glogg" );
57 foreach ( QString key, registry.allKeys() ) {
58 settings_->setValue( key, registry.value( key ) );
59 }
60 }
61 #else
62 // We use default Qt storage on proper OSes
63 settings_ = new QSettings( "glogg", "glogg" );
64 #endif
65 initialised_ = true;
66 }
67
registerPersistable(std::shared_ptr<Persistable> object,const QString & name)68 void PersistentInfo::registerPersistable( std::shared_ptr<Persistable> object,
69 const QString& name )
70 {
71 assert( initialised_ );
72
73 objectList_.insert( name, object );
74 }
75
getPersistable(const QString & name)76 std::shared_ptr<Persistable> PersistentInfo::getPersistable( const QString& name )
77 {
78 assert( initialised_ );
79
80 std::shared_ptr<Persistable> object = objectList_.value( name, NULL );
81
82 return object;
83 }
84
save(const QString & name)85 void PersistentInfo::save( const QString& name )
86 {
87 assert( initialised_ );
88
89 if ( objectList_.contains( name ) )
90 objectList_.value( name )->saveToStorage( *settings_ );
91 else
92 LOG(logERROR) << "Unregistered persistable " << name.toStdString();
93
94 // Sync to ensure it is propagated to other processes
95 settings_->sync();
96 }
97
retrieve(const QString & name)98 void PersistentInfo::retrieve( const QString& name )
99 {
100 assert( initialised_ );
101
102 // Sync to ensure it has been propagated from other processes
103 settings_->sync();
104
105 if ( objectList_.contains( name ) )
106 objectList_.value( name )->retrieveFromStorage( *settings_ );
107 else
108 LOG(logERROR) << "Unregistered persistable " << name.toStdString();
109 }
110
111 // Friend function to construct/get the singleton
GetPersistentInfo()112 PersistentInfo& GetPersistentInfo()
113 {
114 static PersistentInfo pInfo;
115 return pInfo;
116 }
117
118