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Guarantee that configuration values are committed to disk on exit

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This commit is contained in:
Janek Bevendorff 2018-02-04 13:18:59 +01:00
parent af9e1e79cd
commit 527868a6b3
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GPG key ID: 2FDEB0D40BCA5E11
8 changed files with 115 additions and 86 deletions
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16
src/core/Config.cpp
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@ -21,7 +21,6 @@
#include <QCoreApplication>
#include <QDir>
#include <QSettings>
#include <QStandardPaths>
#include <QTemporaryFile>
Config* Config::m_instance(nullptr);
@ -51,6 +50,18 @@ void Config::set(const QString& key, const QVariant& value)
m_settings->setValue(key, value);
}
/**
* Sync configuration with persistent storage.
*
* Usually, you don't need to call this method manually, but if you are writing
* configurations after an emitted \link QCoreApplication::aboutToQuit() signal,
* use it to guarantee your config values are persisted.
*/
void Config::sync()
{
m_settings->sync();
}
Config::Config(const QString& fileName, QObject* parent)
: QObject(parent)
{
@ -106,6 +117,7 @@ Config::~Config()
void Config::init(const QString& fileName)
{
m_settings.reset(new QSettings(fileName, QSettings::IniFormat));
connect(qApp, &QCoreApplication::aboutToQuit, this, &Config::sync);
m_defaults.insert("SingleInstance", true);
m_defaults.insert("RememberLastDatabases", true);
@ -162,7 +174,7 @@ void Config::createConfigFromFile(const QString& file)
void Config::createTempFileInstance()
{
Q_ASSERT(!m_instance);
QTemporaryFile* tmpFile = new QTemporaryFile();
auto* tmpFile = new QTemporaryFile();
bool openResult = tmpFile->open();
Q_ASSERT(openResult);
Q_UNUSED(openResult);