Added ability to prevent application lock and account switch.

Telegram/SourceFiles/core/application.cpp

@@ -789,9 +789,17 @@ bool Application::openCustomUrl(
 
 }
 
+void Application::preventOrInvoke(Fn<void()> &&callback) {
+	_window->preventOrInvoke(std::move(callback));
+}
+
 void Application::lockByPasscode() {
-	_passcodeLock = true;
+	preventOrInvoke([=] {
-	_window->setupPasscodeLock();
+		if (_window) {
+			_passcodeLock = true;
+			_window->setupPasscodeLock();
+		}
+	});
 }
 
 void Application::unlockPasscode() {

Telegram/SourceFiles/core/application.h

@@ -277,6 +277,8 @@ public:
 	void switchFreeType();
 	void writeInstallBetaVersionsSetting();
 
+	void preventOrInvoke(Fn<void()> &&callback);
+
 	void call_handleObservables();
 
 protected:

Telegram/SourceFiles/main/main_domain.cpp

@@ -385,6 +385,12 @@ void Domain::checkForLastProductionConfig(
 	Core::App().refreshFallbackProductionConfig(mtp->config());
 }
 
+void Domain::maybeActivate(not_null<Main::Account*> account) {
+	Core::App().preventOrInvoke(crl::guard(account, [=] {
+		activate(account);
+	}));
+}
+
 void Domain::activate(not_null<Main::Account*> account) {
 	if (_active.current() == account.get()) {
 		return;

Telegram/SourceFiles/main/main_domain.h

@@ -63,6 +63,7 @@ public:
 	void notifyUnreadBadgeChanged();
 
 	[[nodiscard]] not_null<Main::Account*> add(MTP::Environment environment);
+	void maybeActivate(not_null<Main::Account*> account);
 	void activate(not_null<Main::Account*> account);
 	void addActivated(MTP::Environment environment);
 

Telegram/SourceFiles/mainwidget.cpp

@@ -1897,10 +1897,8 @@ bool MainWidget::stackIsEmpty() const {
 	return _stack.empty();
 }
 
-bool MainWidget::preventsCloseSection(
+bool MainWidget::preventsCloseSection(Fn<void()> callback) const {
-		Fn<void()> callback,
+	if (Core::App().passcodeLocked()) {
-		const SectionShow &params) const {
-	if (params.thirdColumn || Core::App().passcodeLocked()) {
 		return false;
 	}
 	auto copy = callback;
@@ -1908,6 +1906,14 @@ bool MainWidget::preventsCloseSection(
 		|| (_history && _history->preventsClose(std::move(callback)));
 }
 
+bool MainWidget::preventsCloseSection(
+		Fn<void()> callback,
+		const SectionShow &params) const {
+	return params.thirdColumn
+		? false
+		: preventsCloseSection(std::move(callback));
+}
+
 void MainWidget::showBackFromStack(
 		const SectionShow &params) {
 

Telegram/SourceFiles/mainwidget.h

@@ -223,6 +223,11 @@ public:
 	void closeBothPlayers();
 	void stopAndClosePlayer();
 
+	bool preventsCloseSection(Fn<void()> callback) const;
+	bool preventsCloseSection(
+		Fn<void()> callback,
+		const SectionShow &params) const;
+
 public slots:
 	void inlineResultLoadProgress(FileLoader *loader);
 	void inlineResultLoadFailed(FileLoader *loader, bool started);
@@ -274,9 +279,6 @@ private:
 		std::unique_ptr<Window::SectionMemento> &&memento,
 		const SectionShow &params);
 	void dropMainSection(Window::SectionWidget *widget);
-	bool preventsCloseSection(
-		Fn<void()> callback,
-		const SectionShow &params) const;
 
 	Window::SectionSlideParams prepareThirdSectionAnimation(Window::SectionWidget *section);
 

Telegram/SourceFiles/mainwindow.cpp

@@ -221,6 +221,13 @@ QPixmap MainWindow::grabInner() {
 	return {};
 }
 
+void MainWindow::preventOrInvoke(Fn<void()> callback) {
+	if (_main && _main->preventsCloseSection(callback)) {
+		return;
+	}
+	callback();
+}
+
 void MainWindow::setupPasscodeLock() {
 	auto animated = (_main || _intro);
 	auto bg = animated ? grabInner() : QPixmap();

Telegram/SourceFiles/mainwindow.h

@@ -48,6 +48,8 @@ public:
 
 	void finishFirstShow();
 
+	void preventOrInvoke(Fn<void()> callback);
+
 	void setupPasscodeLock();
 	void clearPasscodeLock();
 	void setupIntro(Intro::EnterPoint point);

Telegram/SourceFiles/window/window_controller.cpp

@@ -317,6 +317,10 @@ void Controller::close() {
 	_widget.close();
 }
 
+void Controller::preventOrInvoke(Fn<void()> &&callback) {
+	_widget.preventOrInvoke(std::move(callback));
+}
+
 QPoint Controller::getPointForCallPanelCenter() const {
 	Expects(_widget.windowHandle() != nullptr);
 

Telegram/SourceFiles/window/window_controller.h

@@ -72,6 +72,8 @@ public:
 	void minimize();
 	void close();
 
+	void preventOrInvoke(Fn<void()> &&callback);
+
 	QPoint getPointForCallPanelCenter() const;
 
 private:

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -761,7 +761,7 @@ void MainMenu::rebuildAccounts() {
 				}
 				auto activate = [=, guard = _accountSwitchGuard.make_guard()]{
 					if (guard) {
-						Core::App().domain().activate(account);
+						Core::App().domain().maybeActivate(account);
 					}
 				};
 				base::call_delayed(
@@ -815,7 +815,9 @@ not_null<Ui::SlideWrap<Ui::RippleButton>*> MainMenu::setupAddAccount(
 	}, button->lifetime());
 
 	const auto add = [=](MTP::Environment environment) {
-		Core::App().domain().addActivated(environment);
+		Core::App().preventOrInvoke([=] {
+			Core::App().domain().addActivated(environment);
+		});
 	};
 
 	button->setAcceptBoth(true);