NOISSUE split out language selection widget, use it in settings

application/pages/global/LanguagePage.cpp

@@ -0,0 +1,51 @@
+#include "LanguagePage.h"
+
+#include "widgets/LanguageSelectionWidget.h"
+#include <QVBoxLayout>
+
+LanguagePage::LanguagePage(QWidget* parent) :
+    QWidget(parent)
+{
+    setObjectName(QStringLiteral("languagePage"));
+    auto layout = new QVBoxLayout(this);
+    mainWidget = new LanguageSelectionWidget(this);
+    layout->setContentsMargins(0,0,0,0);
+    layout->addWidget(mainWidget);
+    retranslate();
+}
+
+LanguagePage::~LanguagePage()
+{
+}
+
+bool LanguagePage::apply()
+{
+    applySettings();
+    return true;
+}
+
+void LanguagePage::applySettings()
+{
+    auto settings = MMC->settings();
+    QString key = mainWidget->getSelectedLanguageKey();
+    settings->set("Language", key);
+}
+
+void LanguagePage::loadSettings()
+{
+    // NIL
+}
+
+void LanguagePage::retranslate()
+{
+    mainWidget->retranslate();
+}
+
+void LanguagePage::changeEvent(QEvent* event)
+{
+    if (event->type() == QEvent::LanguageChange)
+    {
+        retranslate();
+    }
+    QWidget::changeEvent(event);
+}

application/pages/global/LanguagePage.h

@@ -0,0 +1,60 @@
+/* Copyright 2013-2019 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include "pages/BasePage.h"
+#include <MultiMC.h>
+#include <QWidget>
+
+class LanguageSelectionWidget;
+
+class LanguagePage : public QWidget, public BasePage
+{
+    Q_OBJECT
+
+public:
+    explicit LanguagePage(QWidget *parent = 0);
+    virtual ~LanguagePage();
+
+    QString displayName() const override
+    {
+        return tr("Language");
+    }
+    QIcon icon() const override
+    {
+        return MMC->getThemedIcon("language");
+    }
+    QString id() const override
+    {
+        return "language-settings";
+    }
+    QString helpPage() const override
+    {
+        return "Language-settings";
+    }
+    bool apply() override;
+
+    void changeEvent(QEvent * ) override;
+
+private:
+    void applySettings();
+    void loadSettings();
+    void retranslate();
+
+private:
+    LanguageSelectionWidget *mainWidget;
+};