+ uint ver = s.value("Config/Version", 0).toUInt();
+ if (!ver) {
+ // No version, so create one
+ s.setValue("Config/Version", VERSION);
+ return VERSION;
+ }
+ return ver;
+}
+
+
+uint Settings::versionMinor() const
+{
+ // Don't cache this value; ignore the group
+ create_qsettings;
+ // '0' means new configuration, anything else indicates an existing configuration. Application
+ // initialization should check this value and manage upgrades/downgrades, e.g. in Core::Core()
+ // and QtUiApplication::init().
+ uint verMinor = s.value("Config/VersionMinor", 0).toUInt();
+
+ // As previous Quassel versions didn't implement this, we need to check if any settings other
+ // than Config/Version exist. If so, assume it's version 1.
+ if (verMinor == 0 && s.allKeys().count() > 1) {
+ // More than 1 key exists, but version's never been set. Assume and set version 1.
+ // const_cast is ok, because setVersionMinor() doesn't actually change this instance
+ const_cast<Settings*>(this)->setVersionMinor(VERSION_MINOR_INITIAL);
+ return VERSION_MINOR_INITIAL;
+ } else {
+ return verMinor;
+ }
+}
+
+
+void Settings::setVersionMinor(const uint versionMinor)
+{
+ // Don't cache this value; ignore the group
+ create_qsettings;
+ // Set the value directly.
+ s.setValue("Config/VersionMinor", versionMinor);
+}
+
+
+QSettings::Format Settings::format() const
+{
+#ifdef Q_OS_WIN
+ return QSettings::IniFormat;
+#else
+ return QSettings::NativeFormat;
+#endif
+}
+
+
+bool Settings::sync()
+{
+ create_qsettings;
+ s.sync();
+ switch (s.status()) {
+ case QSettings::NoError:
+ return true;
+ default:
+ return false;
+ }
+}
+
+
+bool Settings::isWritable() const
+{
+ create_qsettings;
+ return s.isWritable();
+}
+
+
+QStringList Settings::allLocalKeys() const
+{
+ create_qsettings;
+ s.beginGroup(_group);
+ QStringList res = s.allKeys();
+ s.endGroup();
+ return res;
+}
+
+
+QStringList Settings::localChildKeys(const QString &rootkey) const
+{
+ QString g;
+ if (rootkey.isEmpty())
+ g = _group;
+ else
+ g = QString("%1/%2").arg(_group, rootkey);
+
+ create_qsettings;
+ s.beginGroup(g);
+ QStringList res = s.childKeys();
+ s.endGroup();
+ return res;
+}
+
+
+QStringList Settings::localChildGroups(const QString &rootkey) const
+{
+ QString g;
+ if (rootkey.isEmpty())
+ g = _group;
+ else
+ g = QString("%1/%2").arg(_group, rootkey);
+
+ create_qsettings;
+ s.beginGroup(g);
+ QStringList res = s.childGroups();
+ s.endGroup();
+ return res;
+}
+
+
+void Settings::setLocalValue(const QString &key, const QVariant &data)
+{
+ QString normKey = normalizedKey(_group, key);
+ create_qsettings;
+ s.setValue(normKey, data);
+ setCacheKeyPersisted(normKey, true);
+ setCacheValue(normKey, data);
+ if (hasNotifier(normKey)) {
+ emit notifier(normKey)->valueChanged(data);
+ }
+}
+
+
+QVariant Settings::localValue(const QString &key, const QVariant &def) const
+{
+ QString normKey = normalizedKey(_group, key);
+ if (!isCached(normKey)) {
+ create_qsettings;
+ // Since we're loading from settings anyways, cache whether or not the key exists on disk
+ setCacheKeyPersisted(normKey, s.contains(normKey));
+ // Cache key value
+ setCacheValue(normKey, s.value(normKey, def));
+ }
+ if (cacheKeyPersisted(normKey)) {
+ return cacheValue(normKey);
+ }
+ // Don't return possibly wrong cached values
+ // A key gets cached with the first default value requested and never changes afterwards
+ return def;
+}
+
+
+bool Settings::localKeyExists(const QString &key) const
+{
+ QString normKey = normalizedKey(_group, key);
+ if (!isKeyPersistedCached(normKey)) {
+ create_qsettings;
+ // Cache whether or not key exists on disk
+ // We can't cache key value as we don't know the default
+ setCacheKeyPersisted(normKey, s.contains(normKey));
+ }
+
+ return cacheKeyPersisted(normKey);
+}
+
+
+void Settings::removeLocalKey(const QString &key)
+{
+ create_qsettings;
+ s.beginGroup(_group);
+ s.remove(key);
+ s.endGroup();
+ QString normKey = normalizedKey(_group, key);
+ if (isCached(normKey)) {
+ _settingsCache.remove(normKey);
+ }
+ if (isKeyPersistedCached(normKey)) {
+ _settingsKeyPersistedCache.remove(normKey);
+ }
+ if (hasNotifier(normKey)) {
+ emit notifier(normKey)->valueChanged({});
+ }
+}
+
+
+QString Settings::fileName() const
+{
+ return Quassel::configDirPath() + _appName
+ + ((format() == QSettings::NativeFormat) ? QLatin1String(".conf") : QLatin1String(".ini"));
+}
+
+
+QString Settings::normalizedKey(const QString &group, const QString &key) const
+{
+ if (group.isEmpty())
+ return key;
+ return group + '/' + key;
+}
+
+
+void Settings::setCacheKeyPersisted(const QString &normKey, bool exists) const
+{
+ _settingsKeyPersistedCache[normKey] = exists;
+}
+
+
+bool Settings::cacheKeyPersisted(const QString &normKey) const
+{
+ return _settingsKeyPersistedCache[normKey];
+}
+
+
+bool Settings::isKeyPersistedCached(const QString &normKey) const
+{
+ return _settingsKeyPersistedCache.contains(normKey);
+}
+
+
+void Settings::setCacheValue(const QString &normKey, const QVariant &data) const
+{
+ _settingsCache[normKey] = data;
+}
+
+
+QVariant Settings::cacheValue(const QString &normKey) const
+{
+ return _settingsCache[normKey];
+}
+
+
+bool Settings::isCached(const QString &normKey) const
+{
+ return _settingsCache.contains(normKey);
+}
+
+
+SettingsChangeNotifier *Settings::notifier(const QString &normKey) const
+{
+ if (!hasNotifier(normKey))
+ _settingsChangeNotifier[normKey] = std::make_shared<SettingsChangeNotifier>();
+ return _settingsChangeNotifier[normKey].get();
+}
+
+
+bool Settings::hasNotifier(const QString &normKey) const
+{
+ return _settingsChangeNotifier.contains(normKey);