bindablesubscription.cpp

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++ // Copyright (C) 2021 The Qt Company Ltd.

++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

++

++ #include "bindablesubscription.h"

++ #include "bindableuser.h"

++

++ //! [binding-expressions]

++

++ BindableSubscription::BindableSubscription(BindableUser *user) : m_user(user)

++ {

++     Q_ASSERT(user);

++

++     m_price.setBinding(

++             [this] { return qRound(calculateDiscount() * int(m_duration) * basePrice()); });

++

++     m_isValid.setBinding([this] {

++         return m_user->country() != BindableUser::Country::AnyCountry && m_user->age() > 12;

++     });

++ }

++

++ //! [binding-expressions]

++

++ //! [set-duration]

++

++ void BindableSubscription::setDuration(Duration newDuration)

++ {

++     m_duration = newDuration;

++ }

++

++ //! [set-duration]

++

++ double BindableSubscription::calculateDiscount() const

++ {

++     switch (m_duration) {

++     case Monthly:

++         return 1;

++     case Quarterly:

++         return 0.9;

++     case Yearly:

++         return 0.6;

++     }

++     Q_UNREACHABLE_RETURN(-1);

++ }

++

++ int BindableSubscription::basePrice() const

++ {

++     if (m_user->country() == BindableUser::Country::AnyCountry)

++         return 0;

++

++     return (m_user->country() == BindableUser::Country::Norway) ? 100 : 80;

++ }