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/*
* Copyright (C) 2011 Nicolas Bonnefon and other contributors
*
* This file is part of glogg.
*
* glogg is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* glogg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with glogg. If not, see <http://www.gnu.org/licenses/>.
*/
// Implements PersistentInfo, a singleton class which store/retrieve objects
// to persistent storage.
#include "persistentinfo.h"
#include <cassert>
#include <QStringList>
#include "log.h"
#include "persistable.h"
PersistentInfo::PersistentInfo()
{
settings_ = NULL;
initialised_ = false;
}
PersistentInfo::~PersistentInfo()
{
if ( initialised_ )
delete settings_;
}
void PersistentInfo::migrateAndInit()
{
assert( initialised_ == false );
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
// On Windows, we use .ini files and import from the registry if no
// .ini file is found (glogg <= 0.9 used the registry).
// This store the config file in %appdata%
settings_ = new QSettings( QSettings::IniFormat,
QSettings::UserScope, "glogg", "glogg" );
if ( settings_->childKeys().count() == 0 ) {
LOG(logWARNING) << "INI file empty, trying to import from registry";
QSettings registry( "glogg", "glogg" );
foreach ( QString key, registry.allKeys() ) {
settings_->setValue( key, registry.value( key ) );
}
}
#else
// We use default Qt storage on proper OSes
settings_ = new QSettings( "glogg", "glogg" );
#endif
initialised_ = true;
}
void PersistentInfo::registerPersistable( Persistable* object,
const QString& name )
{
assert( initialised_ );
objectList_.insert( name, object );
}
Persistable* PersistentInfo::getPersistable( const QString& name )
{
assert( initialised_ );
Persistable* object = objectList_.value( name, NULL );
return object;
}
void PersistentInfo::save( const QString& name )
{
assert( initialised_ );
if ( objectList_.contains( name ) )
objectList_.value( name )->saveToStorage( *settings_ );
else
LOG(logERROR) << "Unregistered persistable " << name.toStdString();
// Sync to ensure it is propagated to other processes
settings_->sync();
}
void PersistentInfo::retrieve( const QString& name )
{
assert( initialised_ );
// Sync to ensure it has been propagated from other processes
settings_->sync();
if ( objectList_.contains( name ) )
objectList_.value( name )->retrieveFromStorage( *settings_ );
else
LOG(logERROR) << "Unregistered persistable " << name.toStdString();
}
// Friend function to construct/get the singleton
PersistentInfo& GetPersistentInfo()
{
static PersistentInfo pInfo;
return pInfo;
}
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