Handle the outdated app error in passport.

Telegram/Resources/langs/lang.strings

@@ -1665,6 +1665,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_passport_error_cant_read" = "Can't read this file. Please choose an image.";
 "lng_passport_bad_name" = "Please use latin characters only.";
 "lng_passport_wait_upload" = "Please wait while upload is finished.";
+"lng_passport_app_out_of_date" = "Sorry, your Telegram app is out of date and can't handle this request. Please update Telegram.";
 
 "lng_export_title" = "Export Personal Data";
 "lng_export_progress_title" = "Exporting personal data";

Telegram/SourceFiles/core/update_checker.cpp

@@ -2108,6 +2108,7 @@ void UpdateApplication() {
 		if (weak) {
 			weak->scrollToUpdateRow();
 		}
+		window->showFromTray();
 	}
 }
 

Telegram/SourceFiles/passport/passport_form_controller.cpp

@@ -2060,8 +2060,12 @@ void FormController::parseForm(const MTPaccount_AuthorizationForm &result) {
 void FormController::formFail(const QString &error) {
 	_savedPasswordValue = QByteArray();
 	_serviceErrorText = error;
-	_view->showCriticalError(
-		lang(lng_passport_form_error) + "\n" + error);
+	if (error == "APP_VERSION_OUTDATED") {
+		_view->showUpdateAppBox();
+	} else {
+		_view->showCriticalError(
+			lang(lng_passport_form_error) + "\n" + error);
+	}
 }
 
 void FormController::requestPassword() {

Telegram/SourceFiles/passport/passport_form_view_controller.h

@@ -43,6 +43,7 @@ public:
 	virtual void showAskPassword() = 0;
 	virtual void showNoPassword() = 0;
 	virtual void showCriticalError(const QString &error) = 0;
+	virtual void showUpdateAppBox() = 0;
 	virtual void editScope(int index) = 0;
 
 	virtual void showBox(

Telegram/SourceFiles/passport/passport_panel.cpp

@@ -98,6 +98,7 @@ void Panel::showBox(
 		LayerOptions options,
 		anim::type animated) {
 	_widget->showBox(std::move(box), options, animated);
+	_widget->showAndActivate();
 }
 
 void Panel::showToast(const QString &text) {

Telegram/SourceFiles/passport/passport_panel_controller.cpp

@@ -19,6 +19,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/toast/toast.h"
 #include "ui/rp_widget.h"
 #include "ui/countryinput.h"
+#include "core/update_checker.h"
 #include "layout.h"
 #include "styles/style_boxes.h"
 
@@ -812,6 +813,24 @@ void PanelController::showCriticalError(const QString &error) {
 	_panel->showCriticalError(error);
 }
 
+void PanelController::showUpdateAppBox() {
+	ensurePanelCreated();
+
+	const auto box = std::make_shared<QPointer<BoxContent>>();
+	const auto callback = [=] {
+		_form->cancelSure();
+		Core::UpdateApplication();
+	};
+	*box = show(
+		Box<ConfirmBox>(
+			lang(lng_passport_app_out_of_date),
+			lang(lng_menu_update),
+			callback,
+			[=] { _form->cancelSure(); }),
+		LayerOption::KeepOther,
+		anim::type::instant);
+}
+
 void PanelController::ensurePanelCreated() {
 	if (!_panel) {
 		_panel = std::make_unique<Panel>(this);

Telegram/SourceFiles/passport/passport_panel_controller.h

@@ -97,6 +97,7 @@ public:
 	void showAskPassword() override;
 	void showNoPassword() override;
 	void showCriticalError(const QString &error) override;
+	void showUpdateAppBox() override;
 
 	void fillRows(
 		Fn<void(

Telegram/SourceFiles/ui/widgets/separate_panel.cpp

@@ -223,7 +223,9 @@ void SeparatePanel::finishAnimating() {
 	_animationCache = QPixmap();
 	if (_visible) {
 		showControls();
-		_inner->setFocus();
+		if (_inner) {
+			_inner->setFocus();
+		}
 	} else {
 		finishClose();
 	}
@@ -317,7 +319,7 @@ void SeparatePanel::focusInEvent(QFocusEvent *e) {
 	crl::on_main(this, [=] {
 		if (_layer) {
 			_layer->setInnerFocus();
-		} else if (!_inner->isHidden()) {
+		} else if (_inner && !_inner->isHidden()) {
 			_inner->setFocus();
 		}
 	});