Show webview error in Iv::Controller.

Telegram/SourceFiles/iv/iv_controller.cpp

@@ -11,8 +11,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/invoke_queued.h"
 #include "base/qt_signal_producer.h"
 #include "base/qthelp_url.h"
+#include "core/file_utilities.h"
 #include "iv/iv_data.h"
 #include "lang/lang_keys.h"
+#include "ui/chat/attach/attach_bot_webview.h"
 #include "ui/platform/ui_platform_window_title.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/labels.h"
@@ -28,6 +30,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "styles/palette.h"
 #include "styles/style_iv.h"
 #include "styles/style_menu_icons.h"
+#include "styles/style_payments.h" // paymentsCriticalError
 #include "styles/style_widgets.h"
 #include "styles/style_window.h"
 
@@ -194,7 +197,7 @@ Controller::~Controller() {
 		_window->hide();
 	}
 	_ready = false;
-	_webview = nullptr;
+	base::take(_webview);
 	_back.destroy();
 	_forward.destroy();
 	_menu = nullptr;
@@ -335,8 +338,6 @@ void Controller::showTonSite(
 	if (_webview && _webview->widget()) {
 		_webview->navigate(url);
 		activate();
-	} else {
-		_events.fire({ Event::Type::Close });
 	}
 	_url = url;
 	_subtitleText = _url.value(
@@ -435,7 +436,7 @@ void Controller::createWebview(const Webview::StorageId &storageId) {
 
 	window->lifetime().add([=] {
 		_ready = false;
-		_webview = nullptr;
+		base::take(_webview);
 	});
 
 	window->events(
@@ -449,11 +450,32 @@ void Controller::createWebview(const Webview::StorageId &storageId) {
 			}
 		}
 	}, window->lifetime());
-	raw->widget()->show();
+
+	const auto widget = raw->widget();
+	if (!widget) {
+		base::take(_webview);
+		showWebviewError();
+		return;
+	}
+	widget->show();
+
+	QObject::connect(widget, &QObject::destroyed, [=] {
+		if (!_webview) {
+			// If we destroyed _webview ourselves,
+			// we don't show any message, nothing crashed.
+			return;
+		}
+		crl::on_main(window, [=] {
+			showWebviewError({ "Error: WebView has crashed." });
+		});
+		base::take(_webview);
+	});
 
 	_container->sizeValue(
 	) | rpl::start_with_next([=](QSize size) {
-		raw->widget()->setGeometry(QRect(QPoint(), size));
+		if (const auto widget = raw->widget()) {
+			widget->setGeometry(QRect(QPoint(), size));
+		}
 	}, _container->lifetime());
 
 	raw->setNavigationStartHandler([=](const QString &uri, bool newWindow) {
@@ -600,11 +622,45 @@ void Controller::createWebview(const Webview::StorageId &storageId) {
 		_back->setAttribute(
 			Qt::WA_TransparentForMouseEvents,
 			!state.canGoBack);
+		_url = QString::fromStdString(state.url);
 	}, _webview->lifetime());
 
 	raw->init(R"()");
 }
 
+void Controller::showWebviewError() {
+	const auto available = Webview::Availability();
+	if (available.error != Webview::Available::Error::None) {
+		showWebviewError(Ui::BotWebView::ErrorText(available));
+	} else {
+		showWebviewError({ "Error: Could not initialize WebView." });
+	}
+}
+
+void Controller::showWebviewError(TextWithEntities text) {
+	auto error = Ui::CreateChild<Ui::PaddingWrap<Ui::FlatLabel>>(
+		_container,
+		object_ptr<Ui::FlatLabel>(
+			_container,
+			rpl::single(text),
+			st::paymentsCriticalError),
+		st::paymentsCriticalErrorPadding);
+	error->entity()->setClickHandlerFilter([=](
+			const ClickHandlerPtr &handler,
+			Qt::MouseButton) {
+		const auto entity = handler->getTextEntity();
+		if (entity.type != EntityType::CustomUrl) {
+			return true;
+		}
+		File::OpenUrl(entity.data);
+		return false;
+	});
+	error->show();
+	_container->sizeValue() | rpl::start_with_next([=](QSize size) {
+		error->setGeometry(0, 0, size.width(), size.height() * 2 / 3);
+	}, error->lifetime());
+}
+
 void Controller::showInWindow(
 		const Webview::StorageId &storageId,
 		Prepared page) {

Telegram/SourceFiles/iv/iv_controller.h

@@ -123,6 +123,9 @@ private:
 	void showShareMenu();
 	void destroyShareMenu();
 
+	void showWebviewError();
+	void showWebviewError(TextWithEntities text);
+
 	const not_null<Delegate*> _delegate;
 
 	std::unique_ptr<Ui::RpWindow> _window;

Telegram/SourceFiles/payments/ui/payments_panel.cpp

@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/checkbox.h"
 #include "ui/wrap/fade_wrap.h"
 #include "ui/boxes/single_choice_box.h"
+#include "ui/chat/attach/attach_bot_webview.h"
 #include "ui/text/format_values.h"
 #include "ui/text/text_utilities.h"
 #include "ui/effects/radial_animation.h"
@@ -908,32 +909,9 @@ std::shared_ptr<Show> Panel::uiShow() {
 void Panel::showWebviewError(
 		const QString &text,
 		const Webview::Available &information) {
-	using Error = Webview::Available::Error;
-	Expects(information.error != Error::None);
-
-	auto rich = TextWithEntities{ text };
-	rich.append("\n\n");
-	switch (information.error) {
-	case Error::NoWebview2: {
-		rich.append(tr::lng_payments_webview_install_edge(
-			tr::now,
-			lt_link,
-			Text::Link(
-				"Microsoft Edge WebView2 Runtime",
-				"https://go.microsoft.com/fwlink/p/?LinkId=2124703"),
-			Ui::Text::WithEntities));
-	} break;
-	case Error::NoWebKitGTK:
-		rich.append(tr::lng_payments_webview_install_webkit(tr::now));
-		break;
-	case Error::OldWindows:
-		rich.append(tr::lng_payments_webview_update_windows(tr::now));
-		break;
-	default:
-		rich.append(QString::fromStdString(information.details));
-		break;
-	}
-	showCriticalError(rich);
+	showCriticalError(TextWithEntities{ text }.append(
+		"\n\n"
+	).append(BotWebView::ErrorText(information)));
 }
 
 void Panel::updateThemeParams(const Webview::ThemeParams &params) {

Telegram/SourceFiles/settings/settings_experimental.cpp

@@ -24,7 +24,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "lang/lang_keys.h"
 #include "mainwindow.h"
 #include "media/player/media_player_instance.h"
-#include "webview/platform/win/webview_windows_edge_chromium.h"
 #include "webview/webview_embed.h"
 #include "window/main_window.h"
 #include "window/window_peer_menu.h"
@@ -150,7 +149,7 @@ void SetupExperimental(
 	addToggle(Media::Player::kOptionDisableAutoplayNext);
 	addToggle(kOptionSendLargePhotos);
 	addToggle(Webview::kOptionWebviewDebugEnabled);
-	addToggle(Webview::EdgeChromium::kOptionWebviewLegacyEdge);
+	addToggle(Webview::kOptionWebviewLegacyEdge);
 	addToggle(kOptionAutoScrollInactiveChat);
 	addToggle(Window::Notifications::kOptionGNotification);
 	addToggle(Core::kOptionFreeType);

Telegram/SourceFiles/ui/chat/attach/attach_bot_webview.cpp

@@ -1401,32 +1401,34 @@ if (window.TelegramGameProxy) {
 )");
 }
 
-void Panel::showWebviewError(
-		const QString &text,
-		const Webview::Available &information) {
-	using Error = Webview::Available::Error;
-	Expects(information.error != Error::None);
+TextWithEntities ErrorText(const Webview::Available &info) {
+	Expects(info.error != Webview::Available::Error::None);
 
-	auto rich = TextWithEntities{ text };
-	rich.append("\n\n");
-	switch (information.error) {
-	case Error::NoWebview2: {
-		rich.append(tr::lng_payments_webview_install_edge(
+	using Error = Webview::Available::Error;
+	switch (info.error) {
+	case Error::NoWebview2:
+		return tr::lng_payments_webview_install_edge(
 			tr::now,
 			lt_link,
 			Text::Link(
 				"Microsoft Edge WebView2 Runtime",
 				"https://go.microsoft.com/fwlink/p/?LinkId=2124703"),
-			Ui::Text::WithEntities));
-	} break;
+			Ui::Text::WithEntities);
 	case Error::NoWebKitGTK:
-		rich.append(tr::lng_payments_webview_install_webkit(tr::now));
-		break;
+		return { tr::lng_payments_webview_install_webkit(tr::now) };
+	case Error::OldWindows:
+		return { tr::lng_payments_webview_update_windows(tr::now) };
 	default:
-		rich.append(QString::fromStdString(information.details));
-		break;
+		return { QString::fromStdString(info.details) };
 	}
-	showCriticalError(rich);
+}
+
+void Panel::showWebviewError(
+		const QString &text,
+		const Webview::Available &information) {
+	showCriticalError(TextWithEntities{ text }.append(
+		"\n\n"
+	).append(ErrorText(information)));
 }
 
 rpl::lifetime &Panel::lifetime() {

Telegram/SourceFiles/ui/chat/attach/attach_bot_webview.h

@@ -30,6 +30,8 @@ struct Available;
 
 namespace Ui::BotWebView {
 
+[[nodiscard]] TextWithEntities ErrorText(const Webview::Available &info);
+
 struct MainButtonArgs {
 	bool isActive = false;
 	bool isVisible = false;