Simplified confirmed callback for ConfirmBox instances.

Telegram/SourceFiles/boxes/add_contact_box.cpp

@@ -244,7 +244,6 @@ private:
 
 	Fn<void()> _revokeCallback;
 	mtpRequestId _revokeRequestId = 0;
-	QPointer<ConfirmBox> _weakRevokeConfirmBox;
 
 };
 
@@ -1417,21 +1416,21 @@ void RevokePublicLinkBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
 			lt_group,
 			pressed->name);
 		auto confirmText = tr::lng_channels_too_much_public_revoke(tr::now);
-		_weakRevokeConfirmBox = Ui::show(Box<ConfirmBox>(text, confirmText, crl::guard(this, [this, pressed]() {
+		auto callback = crl::guard(this, [=](Fn<void()> &&close) {
 			if (_revokeRequestId) return;
 			_revokeRequestId = _api.request(MTPchannels_UpdateUsername(
 				pressed->asChannel()->inputChannel,
 				MTP_string()
-			)).done([=](const MTPBool &result) {
-				const auto callback = _revokeCallback;
-				if (_weakRevokeConfirmBox) {
-					_weakRevokeConfirmBox->closeBox();
-				}
-				if (callback) {
+			)).done([=, close = std::move(close)](const MTPBool &result) {
+				close();
+				if (const auto callback = _revokeCallback) {
 					callback();
 				}
 			}).send();
-		})), Ui::LayerOption::KeepOther);
+		});
+		Ui::show(
+			Box<ConfirmBox>(text, confirmText, std::move(callback)),
+			Ui::LayerOption::KeepOther);
 	}
 }
 

Telegram/SourceFiles/boxes/background_box.cpp

@@ -163,12 +163,9 @@ void BackgroundBox::prepare() {
 }
 
 void BackgroundBox::removePaper(const Data::WallPaper &paper) {
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
 	const auto session = &_controller->session();
-	const auto remove = [=, weak = Ui::MakeWeak(this)]{
-		if (*box) {
-			(*box)->closeBox();
-		}
+	const auto remove = [=, weak = Ui::MakeWeak(this)](Fn<void()> &&close) {
+		close();
 		if (weak) {
 			weak->_inner->removePaper(paper);
 		}
@@ -179,7 +176,7 @@ void BackgroundBox::removePaper(const Data::WallPaper &paper) {
 			paper.mtpSettings()
 		)).send();
 	};
-	*box = Ui::show(
+	Ui::show(
 		Box<ConfirmBox>(
 			tr::lng_background_sure_delete(tr::now),
 			tr::lng_selected_delete(tr::now),

Telegram/SourceFiles/boxes/connection_box.cpp

@@ -1085,7 +1085,6 @@ void ProxiesBoxController::ShowApplyConfirmation(
 		proxy.password = fields.value(qsl("secret"));
 	}
 	if (proxy) {
-		const auto box = std::make_shared<QPointer<ConfirmBox>>();
 		const auto text = tr::lng_sure_enable_socks(
 			tr::now,
 			lt_server,
@@ -1095,7 +1094,7 @@ void ProxiesBoxController::ShowApplyConfirmation(
 			+ (proxy.type == Type::Mtproto
 				? "\n\n" + tr::lng_proxy_sponsor_warning(tr::now)
 				: QString());
-		*box = Ui::show(Box<ConfirmBox>(text, tr::lng_sure_enable(tr::now), [=] {
+		auto callback = [=](Fn<void()> &&close) {
 			auto &proxies = Global::RefProxiesList();
 			if (!ranges::contains(proxies, proxy)) {
 				proxies.push_back(proxy);
@@ -1104,10 +1103,14 @@ void ProxiesBoxController::ShowApplyConfirmation(
 				proxy,
 				ProxyData::Settings::Enabled);
 			Local::writeSettings();
-			if (const auto strong = box->data()) {
-				strong->closeBox();
-			}
-		}), Ui::LayerOption::KeepOther);
+			close();
+		};
+		Ui::show(
+			Box<ConfirmBox>(
+				text,
+				tr::lng_sure_enable(tr::now),
+				std::move(callback)),
+			Ui::LayerOption::KeepOther);
 	} else {
 		Ui::show(Box<InformBox>(
 			(proxy.status() == ProxyData::Status::Unsupported

Telegram/SourceFiles/boxes/passcode_box.cpp

@@ -602,14 +602,11 @@ void PasscodeBox::submitOnlyCheckCloudPassword(const QString &oldPassword) {
 	if (_cloudFields.turningOff && _cloudFields.notEmptyPassport) {
 		Assert(!_cloudFields.customCheckCallback);
 
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto confirmed = [=] {
+		const auto confirmed = [=](Fn<void()> &&close) {
 			send();
-			if (*box) {
-				(*box)->closeBox();
-			}
+			close();
 		};
-		*box = getDelegate()->show(Box<ConfirmBox>(
+		getDelegate()->show(Box<ConfirmBox>(
 			tr::lng_cloud_password_passport_losing(tr::now),
 			tr::lng_continue(tr::now),
 			confirmed));
@@ -809,20 +806,16 @@ void PasscodeBox::changeCloudPassword(
 }
 
 void PasscodeBox::suggestSecretReset(const QString &newPassword) {
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	const auto resetSecretAndSave = [=] {
-		checkPasswordHash([=](const Core::CloudPasswordResult &check) {
-			resetSecret(check, newPassword, [=] {
-				if (*box) {
-					(*box)->closeBox();
-				}
-			});
+	auto resetSecretAndSave = [=](Fn<void()> &&close) {
+		checkPasswordHash([=, close = std::move(close)](
+				const Core::CloudPasswordResult &check) {
+			resetSecret(check, newPassword, std::move(close));
 		});
 	};
-	*box = getDelegate()->show(Box<ConfirmBox>(
+	getDelegate()->show(Box<ConfirmBox>(
 		Lang::Hard::PassportCorruptedChange(),
 		Lang::Hard::PassportCorruptedReset(),
-		[=] { resetSecretAndSave(); }));
+		std::move(resetSecretAndSave)));
 }
 
 void PasscodeBox::resetSecret(
@@ -1067,14 +1060,11 @@ void RecoverBox::submit() {
 		}).handleFloodErrors().send();
 	});
 	if (_notEmptyPassport) {
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto confirmed = [=] {
+		const auto confirmed = [=](Fn<void()> &&close) {
 			send();
-			if (*box) {
-				(*box)->closeBox();
-			}
+			close();
 		};
-		*box = getDelegate()->show(Box<ConfirmBox>(
+		getDelegate()->show(Box<ConfirmBox>(
 			tr::lng_cloud_password_passport_losing(tr::now),
 			tr::lng_continue(tr::now),
 			confirmed));

Telegram/SourceFiles/boxes/peers/edit_linked_chat_box.cpp

@@ -146,15 +146,12 @@ void Controller::choose(not_null<ChannelData*> chat) {
 				Ui::Text::RichLangValue));
 		}
 	}
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	const auto sure = [=] {
-		if (*box) {
-			(*box)->closeBox();
-		}
+	const auto sure = [=](Fn<void()> &&close) {
+		close();
 		const auto onstack = _callback;
 		onstack(chat);
 	};
-	*box = Ui::show(
+	Ui::show(
 		Box<ConfirmBox>(
 			text,
 			tr::lng_manage_discussion_group_link(tr::now),
@@ -178,18 +175,15 @@ void Controller::choose(not_null<ChatData*> chat) {
 	text.append(tr::lng_manage_discussion_group_warning(
 		tr::now,
 		Ui::Text::RichLangValue));
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	const auto sure = [=] {
-		if (*box) {
-			(*box)->closeBox();
-		}
+	const auto sure = [=](Fn<void()> &&close) {
+		close();
 		const auto done = [=](not_null<ChannelData*> chat) {
 			const auto onstack = _callback;
 			onstack(chat);
 		};
 		chat->session().api().migrateChat(chat, crl::guard(this, done));
 	};
-	*box = Ui::show(
+	Ui::show(
 		Box<ConfirmBox>(
 			text,
 			tr::lng_manage_discussion_group_link(tr::now),

Telegram/SourceFiles/boxes/peers/edit_peer_type_box.cpp

@@ -546,17 +546,14 @@ void Controller::revokeInviteLink() {
 }
 
 void Controller::exportInviteLink(const QString &confirmation) {
-	const auto boxPointer = std::make_shared<QPointer<ConfirmBox>>();
-	const auto callback = crl::guard(this, [=] {
-		if (const auto strong = *boxPointer) {
-			strong->closeBox();
-		}
+	const auto callback = crl::guard(this, [=](Fn<void()> &&close) {
+		close();
 		_peer->session().api().exportInviteLink(_peer->migrateToOrMe());
 	});
 	auto box = Box<ConfirmBox>(
 		confirmation,
 		std::move(callback));
-	*boxPointer = Ui::show(std::move(box), Ui::LayerOption::KeepOther);
+	Ui::show(std::move(box), Ui::LayerOption::KeepOther);
 }
 
 bool Controller::canEditInviteLink() const {

Telegram/SourceFiles/core/local_url_handlers.cpp

@@ -380,12 +380,11 @@ bool HandleUnknown(
 				result.ventities().value_or_empty())
 		};
 		if (result.is_update_app()) {
-			const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-			const auto callback = [=] {
+			const auto callback = [=](Fn<void()> &&close) {
 				Core::UpdateApplication();
-				if (*box) (*box)->closeBox();
+				close();
 			};
-			*box = Ui::show(Box<ConfirmBox>(
+			Ui::show(Box<ConfirmBox>(
 				text,
 				tr::lng_menu_update(tr::now),
 				callback));

Telegram/SourceFiles/history/view/history_view_contact_status.cpp

@@ -336,8 +336,7 @@ void ContactStatus::setupBlockHandler(not_null<UserData*> user) {
 void ContactStatus::setupShareHandler(not_null<UserData*> user) {
 	_bar.entity()->shareClicks(
 	) | rpl::start_with_next([=] {
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto share = [=] {
+		const auto share = [=](Fn<void()> &&close) {
 			user->setSettings(0);
 			user->session().api().request(MTPcontacts_AcceptContact(
 				user->inputUser
@@ -349,11 +348,9 @@ void ContactStatus::setupShareHandler(not_null<UserData*> user) {
 					lt_user,
 					user->shortName()));
 			}).send();
-			if (*box) {
-				(*box)->closeBox();
-			}
+			close();
 		};
-		*box = _controller->window().show(Box<ConfirmBox>(
+		_controller->window().show(Box<ConfirmBox>(
 			tr::lng_new_contact_share_sure(
 				tr::now,
 				lt_phone,
@@ -387,11 +384,8 @@ void ContactStatus::setupReportHandler(not_null<PeerData*> peer) {
 	) | rpl::start_with_next([=] {
 		Expects(!peer->isUser());
 
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto callback = crl::guard(&_bar, [=] {
-			if (*box) {
-				(*box)->closeBox();
-			}
+		const auto callback = crl::guard(&_bar, [=](Fn<void()> &&close) {
+			close();
 
 			peer->session().api().request(MTPmessages_ReportSpam(
 				peer->input

Telegram/SourceFiles/intro/intro_code.cpp

@@ -344,12 +344,11 @@ void CodeWidget::gotPassword(const MTPaccount_Password &result) {
 		_code->setFocus();
 		return;
 	} else if (!getData()->pwdRequest) {
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto callback = [=] {
+		const auto callback = [=](Fn<void()> &&close) {
 			Core::UpdateApplication();
-			if (*box) (*box)->closeBox();
+			close();
 		};
-		*box = Ui::show(Box<ConfirmBox>(
+		Ui::show(Box<ConfirmBox>(
 			tr::lng_passport_app_out_of_date(tr::now),
 			tr::lng_menu_update(tr::now),
 			callback));

Telegram/SourceFiles/intro/intro_password_check.cpp

@@ -346,14 +346,11 @@ void PasswordCheckWidget::submit() {
 		});
 
 		if (_notEmptyPassport) {
-			const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-			const auto confirmed = [=] {
+			const auto confirmed = [=](Fn<void()> &&close) {
 				send();
-				if (*box) {
-					(*box)->closeBox();
-				}
+				close();
 			};
-			*box = Ui::show(Box<ConfirmBox>(
+			Ui::show(Box<ConfirmBox>(
 				tr::lng_cloud_password_passport_losing(tr::now),
 				tr::lng_continue(tr::now),
 				confirmed));

Telegram/SourceFiles/intro/intro_qr.cpp

@@ -394,12 +394,11 @@ void QrWidget::sendCheckPasswordRequest() {
 				goReplace<QrWidget>(Animate::Forward);
 				return;
 			} else if (!getData()->pwdRequest) {
-				const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-				const auto callback = [=] {
+				const auto callback = [=](Fn<void()> &&close) {
 					Core::UpdateApplication();
-					if (*box) (*box)->closeBox();
+					close();
 				};
-				*box = Ui::show(Box<ConfirmBox>(
+				Ui::show(Box<ConfirmBox>(
 					tr::lng_passport_app_out_of_date(tr::now),
 					tr::lng_menu_update(tr::now),
 					callback));

Telegram/SourceFiles/passport/passport_panel_controller.cpp

@@ -713,11 +713,10 @@ void PanelController::setupPassword() {
 }
 
 void PanelController::cancelPasswordSubmit() {
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	*box = show(Box<ConfirmBox>(
+	show(Box<ConfirmBox>(
 		tr::lng_passport_stop_password_sure(tr::now),
 		tr::lng_passport_stop(tr::now),
-		[=] { if (*box) (*box)->closeBox(); _form->cancelPassword(); }));
+		[=](Fn<void()> &&close) { close(); _form->cancelPassword(); }));
 }
 
 void PanelController::validateRecoveryEmail() {

Telegram/SourceFiles/settings/settings_privacy_controllers.cpp

@@ -514,11 +514,11 @@ void LastSeenPrivacyController::confirmSave(
 		FnMut<void()> saveCallback) {
 	if (someAreDisallowed && !Core::App().settings().lastSeenWarningSeen()) {
 		const auto session = _session;
-		auto weakBox = std::make_shared<QPointer<ConfirmBox>>();
-		auto callback = [=, saveCallback = std::move(saveCallback)]() mutable {
-			if (auto box = *weakBox) {
-				box->closeBox();
-			}
+		auto callback = [
+			=,
+			saveCallback = std::move(saveCallback)
+		](Fn<void()> &&close) mutable {
+			close();
 			saveCallback();
 			Core::App().settings().setLastSeenWarningSeen(true);
 			Core::App().saveSettingsDelayed();
@@ -528,7 +528,7 @@ void LastSeenPrivacyController::confirmSave(
 			tr::lng_continue(tr::now),
 			tr::lng_cancel(tr::now),
 			std::move(callback));
-		*weakBox = Ui::show(std::move(box), Ui::LayerOption::KeepOther);
+		Ui::show(std::move(box), Ui::LayerOption::KeepOther);
 	} else {
 		saveCallback();
 	}

Telegram/SourceFiles/settings/settings_privacy_security.cpp

@@ -640,17 +640,14 @@ void RemoveCloudPassword(not_null<::Main::Session*> session) {
 }
 
 object_ptr<Ui::BoxContent> CloudPasswordAppOutdatedBox() {
-	auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	const auto callback = [=] {
+	const auto callback = [=](Fn<void()> &&close) {
 		Core::UpdateApplication();
-		if (*box) (*box)->closeBox();
+		close();
 	};
-	auto result = Box<ConfirmBox>(
+	return Box<ConfirmBox>(
 		tr::lng_passport_app_out_of_date(tr::now),
 		tr::lng_menu_update(tr::now),
 		callback);
-	*box = result.data();
-	return result;
 }
 
 void AddPrivacyButton(

Telegram/SourceFiles/window/themes/window_theme.cpp

@@ -1321,16 +1321,13 @@ void ToggleNightModeWithConfirmation(
 	if (Background()->nightModeChangeAllowed()) {
 		toggle();
 	} else {
-		const auto box = std::make_shared<QPointer<ConfirmBox>>();
-		const auto disableAndToggle = [=] {
+		const auto disableAndToggle = [=](Fn<void()> &&close) {
 			Core::App().settings().setSystemDarkModeEnabled(false);
 			Core::App().saveSettingsDelayed();
 			toggle();
-			if (*box) {
-				(*box)->closeBox();
-			}
+			close();
 		};
-		*box = window->show(Box<ConfirmBox>(
+		window->show(Box<ConfirmBox>(
 			tr::lng_settings_auto_night_warning(tr::now),
 			tr::lng_settings_auto_night_disable(tr::now),
 			disableAndToggle));

Telegram/SourceFiles/window/themes/window_theme_editor.cpp

@@ -892,15 +892,12 @@ void Editor::closeWithConfirmation() {
 		closeEditor();
 		return;
 	}
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	const auto close = crl::guard(this, [=] {
+	const auto close = crl::guard(this, [=](Fn<void()> &&close) {
 		Background()->clearEditingTheme(ClearEditing::RevertChanges);
 		closeEditor();
-		if (*box) {
-			(*box)->closeBox();
-		}
+		close();
 	});
-	*box = _window->show(Box<ConfirmBox>(
+	_window->show(Box<ConfirmBox>(
 		tr::lng_theme_editor_sure_close(tr::now),
 		tr::lng_close(tr::now),
 		close));

Telegram/SourceFiles/window/themes/window_themes_cloud_list.cpp

@@ -599,11 +599,8 @@ void CloudList::showMenu(Element &element) {
 	}
 	const auto id = cloud.id;
 	_contextMenu->addAction(tr::lng_theme_delete(tr::now), [=] {
-		const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-		const auto remove = [=] {
-			if (*box) {
-				(*box)->closeBox();
-			}
+		const auto remove = [=](Fn<void()> &&close) {
+			close();
 			if (Background()->themeObject().cloud.id == id
 				|| id == kFakeCloudThemeId) {
 				if (Background()->editingTheme().has_value()) {
@@ -618,7 +615,7 @@ void CloudList::showMenu(Element &element) {
 				_window->session().data().cloudThemes().remove(id);
 			}
 		};
-		*box = _window->window().show(Box<ConfirmBox>(
+		_window->window().show(Box<ConfirmBox>(
 			tr::lng_theme_delete_sure(tr::now),
 			tr::lng_theme_delete(tr::now),
 			remove));

Telegram/SourceFiles/window/window_controller.cpp

@@ -177,7 +177,6 @@ void Controller::showTermsDecline() {
 }
 
 void Controller::showTermsDelete() {
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
 	const auto deleteByTerms = [=] {
 		if (const auto session = account().maybeSession()) {
 			session->termsDeleteNow();
@@ -185,13 +184,12 @@ void Controller::showTermsDelete() {
 			Ui::hideLayer();
 		}
 	};
-	*box = Ui::show(
+	Ui::show(
 		Box<ConfirmBox>(
 			tr::lng_terms_delete_warning(tr::now),
 			tr::lng_terms_delete_now(tr::now),
 			st::attentionBoxButton,
-			deleteByTerms,
-			[=] { if (*box) (*box)->closeBox(); }),
+			deleteByTerms),
 		Ui::LayerOption::KeepOther);
 }
 

Telegram/SourceFiles/window/window_filters_menu.cpp

@@ -321,11 +321,10 @@ void FiltersMenu::showEditBox(FilterId id) {
 }
 
 void FiltersMenu::showRemoveBox(FilterId id) {
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
-	*box = _session->window().show(Box<ConfirmBox>(
+	_session->window().show(Box<ConfirmBox>(
 		tr::lng_filters_remove_sure(tr::now),
 		tr::lng_filters_remove_yes(tr::now),
-		[=] { (*box)->closeBox(); remove(id); }));
+		[=](Fn<void()> &&close) { close(); remove(id); }));
 }
 
 void FiltersMenu::remove(FilterId id) {

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -281,14 +281,11 @@ void MainMenu::AccountButton::contextMenuEvent(QContextMenuEvent *e) {
 	}));
 	_menu->addAction(tr::lng_settings_logout(tr::now), crl::guard(this, [=] {
 		const auto session = _session;
-		const auto box = std::make_shared<QPointer<ConfirmBox>>();
-		const auto callback = [=] {
-			if (*box) {
-				(*box)->closeBox();
-			}
+		const auto callback = [=](Fn<void()> &&close) {
+			close();
 			Core::App().logout(&session->account());
 		};
-		*box = Ui::show(Box<ConfirmBox>(
+		Ui::show(Box<ConfirmBox>(
 			tr::lng_sure_logout(tr::now),
 			tr::lng_settings_logout(tr::now),
 			st::attentionBoxButton,

Telegram/SourceFiles/window/window_peer_menu.cpp

@@ -1039,15 +1039,12 @@ QPointer<Ui::RpWidget> ShowSendNowMessagesBox(
 		});
 		return { nullptr };
 	}
-	const auto box = std::make_shared<QPointer<Ui::BoxContent>>();
 	auto done = [
 		=,
 		list = std::move(items),
 		callback = std::move(successCallback)
-	]() mutable {
-		if (*box) {
-			(*box)->closeBox();
-		}
+	](Fn<void()> &&close) mutable {
+		close();
 		auto ids = QVector<MTPint>();
 		for (const auto item : session->data().idsToItems(list)) {
 			if (item->allowsSendNow()) {
@@ -1067,10 +1064,9 @@ QPointer<Ui::RpWidget> ShowSendNowMessagesBox(
 			callback();
 		}
 	};
-	*box = Ui::show(
+	return Ui::show(
 		Box<ConfirmBox>(text, tr::lng_send_button(tr::now), std::move(done)),
-		Ui::LayerOption::KeepOther);
-	return box->data();
+		Ui::LayerOption::KeepOther).data();
 }
 
 void PeerMenuAddChannelMembers(