437 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			437 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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| This file is part of Telegram Desktop,
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| the official desktop application for the Telegram messaging service.
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| 
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| For license and copyright information please follow this link:
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| https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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| */
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| #include "payments/ui/payments_edit_card.h"
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| 
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| #include "payments/ui/payments_panel_delegate.h"
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| #include "payments/ui/payments_field.h"
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| #include "stripe/stripe_card_validator.h"
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| #include "ui/widgets/scroll_area.h"
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| #include "ui/widgets/buttons.h"
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| #include "ui/widgets/labels.h"
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| #include "ui/widgets/checkbox.h"
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| #include "ui/wrap/vertical_layout.h"
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| #include "ui/wrap/fade_wrap.h"
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| #include "lang/lang_keys.h"
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| #include "styles/style_payments.h"
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| #include "styles/style_passport.h"
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| 
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| #include <QtCore/QRegularExpression>
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| 
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| namespace Payments::Ui {
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| namespace {
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| 
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| struct SimpleFieldState {
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| 	QString value;
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| 	int position = 0;
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| };
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| 
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| [[nodiscard]] uint32 ExtractYear(const QString &value) {
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| 	return value.split('/').value(1).toInt() + 2000;
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| }
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| 
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| [[nodiscard]] uint32 ExtractMonth(const QString &value) {
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| 	return value.split('/').value(0).toInt();
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| }
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| 
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| [[nodiscard]] QString RemoveNonNumbers(QString value) {
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| 	static const auto RegExp = QRegularExpression("[^0-9]");
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| 	return value.replace(RegExp, QString());
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| }
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| 
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| [[nodiscard]] SimpleFieldState NumbersOnlyState(SimpleFieldState state) {
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| 	return {
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| 		.value = RemoveNonNumbers(state.value),
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| 		.position = int(RemoveNonNumbers(
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| 			state.value.mid(0, state.position)).size()),
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| 	};
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| }
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| 
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| [[nodiscard]] SimpleFieldState PostprocessCardValidateResult(
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| 		SimpleFieldState result) {
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| 	const auto groups = Stripe::CardNumberFormat(result.value);
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| 	auto position = 0;
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| 	for (const auto length : groups) {
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| 		position += length;
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| 		if (position >= result.value.size()) {
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| 			break;
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| 		}
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| 		result.value.insert(position, QChar(' '));
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| 		if (result.position >= position) {
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| 			++result.position;
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| 		}
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| 		++position;
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| 	}
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| 	return result;
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| }
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| 
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| [[nodiscard]] SimpleFieldState PostprocessExpireDateValidateResult(
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| 		SimpleFieldState result) {
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| 	if (result.value.isEmpty()) {
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| 		return result;
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| 	} else if (result.value[0] == '1'
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| 		&& (result.value.size() > 1)
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| 		&& result.value[1] > '2') {
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| 		result.value = result.value.mid(0, 2);
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| 		return result;
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| 	} else if (result.value[0] > '1') {
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| 		result.value = '0' + result.value;
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| 		++result.position;
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| 	}
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| 	if (result.value.size() > 1) {
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| 		if (result.value.size() > 4) {
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| 			result.value = result.value.mid(0, 4);
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| 		}
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| 		result.value.insert(2, '/');
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| 		if (result.position >= 2) {
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| 			++result.position;
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| 		}
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| 	}
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| 	return result;
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| }
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| 
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| [[nodiscard]] bool IsBackspace(const FieldValidateRequest &request) {
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| 	return (request.wasAnchor == request.wasPosition)
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| 		&& (request.wasPosition == request.nowPosition + 1)
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| 		&& (request.wasValue.mid(0, request.wasPosition - 1)
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| 			== request.nowValue.mid(0, request.nowPosition))
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| 		&& (request.wasValue.mid(request.wasPosition)
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| 			== request.nowValue.mid(request.nowPosition));
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| }
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| 
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| [[nodiscard]] bool IsDelete(const FieldValidateRequest &request) {
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| 	return (request.wasAnchor == request.wasPosition)
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| 		&& (request.wasPosition == request.nowPosition)
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| 		&& (request.wasValue.mid(0, request.wasPosition)
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| 			== request.nowValue.mid(0, request.nowPosition))
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| 		&& (request.wasValue.mid(request.wasPosition + 1)
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| 			== request.nowValue.mid(request.nowPosition));
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| }
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| 
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| template <
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| 	typename ValueValidator,
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| 	typename ValueValidateResult = decltype(
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| 		std::declval<ValueValidator>()(QString()))>
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| [[nodiscard]] auto ComplexNumberValidator(
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| 		ValueValidator valueValidator,
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| 		Fn<SimpleFieldState(SimpleFieldState)> postprocess) {
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| 	using namespace Stripe;
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| 	return [=](FieldValidateRequest request) {
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| 		const auto realNowState = [&] {
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| 			const auto backspaced = IsBackspace(request);
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| 			const auto deleted = IsDelete(request);
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| 			if (!backspaced && !deleted) {
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| 				return NumbersOnlyState({
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| 					.value = request.nowValue,
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| 					.position = request.nowPosition,
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| 				});
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| 			}
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| 			const auto realWasState = NumbersOnlyState({
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| 				.value = request.wasValue,
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| 				.position = request.wasPosition,
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| 			});
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| 			const auto changedValue = deleted
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| 				? (realWasState.value.mid(0, realWasState.position)
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| 					+ realWasState.value.mid(realWasState.position + 1))
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| 				: (realWasState.position > 1)
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| 				? (realWasState.value.mid(0, realWasState.position - 1)
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| 					+ realWasState.value.mid(realWasState.position))
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| 				: realWasState.value.mid(realWasState.position);
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| 			return SimpleFieldState{
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| 				.value = changedValue,
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| 				.position = (deleted
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| 					? realWasState.position
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| 					: std::max(realWasState.position - 1, 0))
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| 			};
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| 		}();
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| 		const auto result = valueValidator(realNowState.value);
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| 		const auto postprocessed = postprocess(realNowState);
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| 		return FieldValidateResult{
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| 			.value = postprocessed.value,
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| 			.position = postprocessed.position,
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| 			.invalid = (result.state == ValidationState::Invalid),
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| 			.finished = result.finished,
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| 		};
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| 	};
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| 
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| }
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| 
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| [[nodiscard]] auto CardNumberValidator() {
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| 	return ComplexNumberValidator(
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| 		Stripe::ValidateCard,
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| 		PostprocessCardValidateResult);
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| }
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| 
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| [[nodiscard]] auto ExpireDateValidator(
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| 		const std::optional<QDate> &overrideExpireDateThreshold) {
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| 	return ComplexNumberValidator([=](const QString &date) {
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| 		return Stripe::ValidateExpireDate(date, overrideExpireDateThreshold);
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| 	}, PostprocessExpireDateValidateResult);
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| }
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| 
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| [[nodiscard]] auto CvcValidator(Fn<QString()> number) {
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| 	using namespace Stripe;
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| 	return [=](FieldValidateRequest request) {
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| 		const auto realNowState = NumbersOnlyState({
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| 			.value = request.nowValue,
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| 			.position = request.nowPosition,
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| 		});
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| 		const auto result = ValidateCvc(number(), realNowState.value);
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| 
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| 		return FieldValidateResult{
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| 			.value = realNowState.value,
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| 			.position = realNowState.position,
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| 			.invalid = (result.state == ValidationState::Invalid),
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| 			.finished = result.finished,
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| 		};
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| 	};
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| }
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| 
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| [[nodiscard]] auto CardHolderNameValidator() {
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| 	return [=](FieldValidateRequest request) {
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| 		return FieldValidateResult{
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| 			.value = request.nowValue.toUpper(),
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| 			.position = request.nowPosition,
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| 			.invalid = request.nowValue.isEmpty(),
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| 		};
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| 	};
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| }
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| 
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| } // namespace
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| 
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| EditCard::EditCard(
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| 	QWidget *parent,
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| 	const NativeMethodDetails &native,
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| 	CardField field,
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| 	not_null<PanelDelegate*> delegate)
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| : _delegate(delegate)
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| , _native(native)
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| , _scroll(this, st::passportPanelScroll)
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| , _topShadow(this)
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| , _bottomShadow(this)
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| , _submit(
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| 	this,
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| 	tr::lng_about_done(),
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| 	st::paymentsPanelButton)
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| , _cancel(
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| 		this,
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| 		tr::lng_cancel(),
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| 		st::paymentsPanelButton) {
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| 	setupControls();
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| }
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| 
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| void EditCard::setFocus(CardField field) {
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| 	_focusField = field;
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| 	if (const auto control = lookupField(field)) {
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| 		_scroll->ensureWidgetVisible(control->widget());
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| 		control->setFocus();
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| 	}
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| }
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| 
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| void EditCard::setFocusFast(CardField field) {
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| 	_focusField = field;
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| 	if (const auto control = lookupField(field)) {
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| 		_scroll->ensureWidgetVisible(control->widget());
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| 		control->setFocusFast();
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| 	}
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| }
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| 
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| void EditCard::showError(CardField field) {
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| 	if (const auto control = lookupField(field)) {
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| 		_scroll->ensureWidgetVisible(control->widget());
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| 		control->showError();
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| 	}
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| }
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| 
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| void EditCard::setupControls() {
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| 	const auto inner = setupContent();
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| 
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| 	_submit->addClickHandler([=] {
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| 		_delegate->panelValidateCard(collect(), (_save && _save->checked()));
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| 	});
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| 	_cancel->addClickHandler([=] {
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| 		_delegate->panelCancelEdit();
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| 	});
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| 
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| 	using namespace rpl::mappers;
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| 
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| 	_topShadow->toggleOn(
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| 		_scroll->scrollTopValue() | rpl::map(_1 > 0));
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| 	_bottomShadow->toggleOn(rpl::combine(
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| 		_scroll->scrollTopValue(),
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| 		_scroll->heightValue(),
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| 		inner->heightValue(),
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| 		_1 + _2 < _3));
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| }
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| 
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| not_null<RpWidget*> EditCard::setupContent() {
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| 	const auto inner = _scroll->setOwnedWidget(
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| 		object_ptr<VerticalLayout>(this));
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| 
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| 	_scroll->widthValue(
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| 	) | rpl::start_with_next([=](int width) {
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| 		inner->resizeToWidth(width);
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| 	}, inner->lifetime());
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| 
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| 	const auto showBox = [=](object_ptr<BoxContent> box) {
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| 		_delegate->panelShowBox(std::move(box));
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| 	};
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| 	auto last = (Field*)nullptr;
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| 	const auto make = [&](QWidget *parent, FieldConfig &&config) {
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| 		auto result = std::make_unique<Field>(parent, std::move(config));
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| 		if (last) {
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| 			last->setNextField(result.get());
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| 			result->setPreviousField(last);
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| 		}
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| 		last = result.get();
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| 		return result;
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| 	};
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| 	const auto add = [&](FieldConfig &&config) {
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| 		auto result = make(inner, std::move(config));
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| 		inner->add(result->ownedWidget(), st::paymentsFieldPadding);
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| 		return result;
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| 	};
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| 	_number = add({
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| 		.type = FieldType::CardNumber,
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| 		.placeholder = tr::lng_payments_card_number(),
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| 		.validator = CardNumberValidator(),
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| 	});
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| 	auto container = inner->add(
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| 		object_ptr<FixedHeightWidget>(
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| 			inner,
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| 			_number->widget()->height()),
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| 		st::paymentsFieldPadding);
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| 	_expire = make(container, {
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| 		.type = FieldType::CardExpireDate,
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| 		.placeholder = tr::lng_payments_card_expire_date(),
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| 		.validator = ExpireDateValidator(
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| 			_delegate->panelOverrideExpireDateThreshold()),
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| 	});
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| 	_cvc = make(container, {
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| 		.type = FieldType::CardCVC,
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| 		.placeholder = tr::lng_payments_card_cvc(),
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| 		.validator = CvcValidator([=] { return _number->value(); }),
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| 	});
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| 	container->widthValue(
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| 	) | rpl::start_with_next([=](int width) {
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| 		const auto left = (width - st::paymentsExpireCvcSkip) / 2;
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| 		const auto right = width - st::paymentsExpireCvcSkip - left;
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| 		_expire->widget()->resizeToWidth(left);
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| 		_cvc->widget()->resizeToWidth(right);
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| 		_expire->widget()->moveToLeft(0, 0, width);
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| 		_cvc->widget()->moveToRight(0, 0, width);
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| 	}, container->lifetime());
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| 
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| 	if (_native.needCardholderName) {
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| 		_name = add({
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| 			.type = FieldType::Text,
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| 			.placeholder = tr::lng_payments_card_holder(),
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| 			.validator = CardHolderNameValidator(),
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| 		});
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| 	}
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| 
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| 	if (_native.needCountry || _native.needZip) {
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| 		inner->add(
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| 			object_ptr<Ui::FlatLabel>(
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| 				inner,
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| 				tr::lng_payments_billing_address(),
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| 				st::paymentsBillingInformationTitle),
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| 			st::paymentsBillingInformationTitlePadding);
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| 	}
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| 	if (_native.needCountry) {
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| 		_country = add({
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| 			.type = FieldType::Country,
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| 			.placeholder = tr::lng_payments_billing_country(),
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| 			.validator = RequiredFinishedValidator(),
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| 			.showBox = showBox,
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| 			.defaultCountry = _native.defaultCountry,
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| 		});
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| 	}
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| 	if (_native.needZip) {
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| 		_zip = add({
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| 			.type = FieldType::Text,
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| 			.placeholder = tr::lng_payments_billing_zip_code(),
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| 			.validator = RequiredValidator(),
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| 		});
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| 		if (_country) {
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| 			_country->finished(
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| 			) | rpl::start_with_next([=] {
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| 				_zip->setFocus();
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| 			}, lifetime());
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| 		}
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| 	}
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| 	if (_native.canSaveInformation) {
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| 		_save = inner->add(
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| 			object_ptr<Ui::Checkbox>(
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| 				inner,
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| 				tr::lng_payments_save_information(tr::now),
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| 				false),
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| 			st::paymentsSaveCheckboxPadding);
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| 	}
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| 
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| 	last->submitted(
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| 	) | rpl::start_with_next([=] {
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| 		_delegate->panelValidateCard(collect(), _save && _save->checked());
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| 	}, lifetime());
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| 
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| 	return inner;
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| }
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| 
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| void EditCard::resizeEvent(QResizeEvent *e) {
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| 	updateControlsGeometry();
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| }
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| 
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| void EditCard::focusInEvent(QFocusEvent *e) {
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| 	if (const auto control = lookupField(_focusField)) {
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| 		control->setFocusFast();
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| 	}
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| }
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| 
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| void EditCard::updateControlsGeometry() {
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| 	const auto &padding = st::paymentsPanelPadding;
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| 	const auto buttonsHeight = padding.top()
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| 		+ _cancel->height()
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| 		+ padding.bottom();
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| 	const auto buttonsTop = height() - buttonsHeight;
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| 	_scroll->setGeometry(0, 0, width(), buttonsTop);
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| 	_topShadow->resizeToWidth(width());
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| 	_topShadow->moveToLeft(0, 0);
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| 	_bottomShadow->resizeToWidth(width());
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| 	_bottomShadow->moveToLeft(0, buttonsTop - st::lineWidth);
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| 	auto right = padding.right();
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| 	_submit->moveToRight(right, buttonsTop + padding.top());
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| 	right += _submit->width() + padding.left();
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| 	_cancel->moveToRight(right, buttonsTop + padding.top());
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| 
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| 	_scroll->updateBars();
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| }
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| 
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| auto EditCard::lookupField(CardField field) const -> Field* {
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| 	switch (field) {
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| 	case CardField::Number: return _number.get();
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| 	case CardField::Cvc: return _cvc.get();
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| 	case CardField::ExpireDate: return _expire.get();
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| 	case CardField::Name: return _name.get();
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| 	case CardField::AddressCountry: return _country.get();
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| 	case CardField::AddressZip: return _zip.get();
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| 	}
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| 	Unexpected("Unknown field in EditCard::controlForField.");
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| }
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| 
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| UncheckedCardDetails EditCard::collect() const {
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| 	return {
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| 		.number = _number ? _number->value() : QString(),
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| 		.cvc = _cvc ? _cvc->value() : QString(),
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| 		.expireYear = _expire ? ExtractYear(_expire->value()) : 0,
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| 		.expireMonth = _expire ? ExtractMonth(_expire->value()) : 0,
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| 		.cardholderName = _name ? _name->value() : QString(),
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| 		.addressCountry = _country ? _country->value() : QString(),
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| 		.addressZip = _zip ? _zip->value() : QString(),
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| 	};
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| }
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| 
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| } // namespace Payments::Ui
 | 
