1 files changed, 47 insertions, 0 deletions
diff --git a/desktop-widgets/preferences/preferences_language.cpp b/desktop-widgets/preferences/preferences_language.cpp
new file mode 100644
index 000000000..7254482e2
--- /dev/null
+++ b/desktop-widgets/preferences/preferences_language.cpp
@@ -0,0 +1,47 @@
+#include "preferences_language.h"
+#include "ui_prefs_language.h"
+
+#include <QApplication>
+#include <QSettings>
+#include <QMessageBox>
+
+
+PreferencesLanguage::PreferencesLanguage() : AbstractPreferencesWidget(tr("Language"), QIcon(":/language"), 4)
+{
+	ui = new Ui::PreferencesLanguage();
+	ui->setupUi(this);
+}
+
+PreferencesLanguage::~PreferencesLanguage()
+{
+	delete ui;
+}
+
+void PreferencesLanguage::refreshSettings()
+{
+	QSettings s;
+	s.beginGroup("Language");
+	ui->languageSystemDefault->setChecked(s.value("UseSystemLanguage", true).toBool());
+	QAbstractItemModel *m = ui->languageView->model();
+	QModelIndexList languages = m->match(m->index(0, 0), Qt::UserRole, s.value("UiLanguage").toString());
+	if (languages.count())
+		ui->languageView->setCurrentIndex(languages.first());
+	s.endGroup();
+}
+
+void PreferencesLanguage::syncSettings()
+{
+	// Locale
+	QLocale loc;
+	QSettings s;
+	s.beginGroup("Language");
+	bool useSystemLang = s.value("UseSystemLanguage", true).toBool();
+	if (useSystemLang != ui->languageSystemDefault->isChecked() ||
+	    (!useSystemLang && s.value("UiLanguage").toString() != ui->languageView->currentIndex().data(Qt::UserRole))) {
+		QMessageBox::warning(this, tr("Restart required"),
+			tr("To correctly load a new language you must restart Subsurface."));
+	}
+	s.setValue("UseSystemLanguage", ui->languageSystemDefault->isChecked());
+	s.setValue("UiLanguage", ui->languageView->currentIndex().data(Qt::UserRole));
+	s.endGroup();
+}
+\ No newline at end of file