Added support of focus handle to sections of settings.

Telegram/SourceFiles/info/settings/info_settings_widget.cpp

@@ -101,6 +101,10 @@ void Widget::showFinished() {
 	_inner->showFinished();
 }
 
+void Widget::setInnerFocus() {
+	_inner->setInnerFocus();
+}
+
 rpl::producer<bool> Widget::desiredShadowVisibility() const {
 	return (_type == ::Settings::Main::Id()
 		|| _type == ::Settings::Information::Id())

Telegram/SourceFiles/info/settings/info_settings_widget.h

@@ -66,6 +66,7 @@ public:
 	void saveChanges(FnMut<void()> done) override;
 
 	void showFinished() override;
+	void setInnerFocus() override;
 
 	rpl::producer<bool> desiredShadowVisibility() const override;
 

Telegram/SourceFiles/settings/settings_common.h

@@ -84,6 +84,8 @@ public:
 	}
 	virtual void showFinished() {
 	}
+	virtual void setInnerFocus() {
+	}
 	[[nodiscard]] virtual QPointer<Ui::RpWidget> createPinnedToTop(
 			not_null<QWidget*> parent) {
 		return nullptr;