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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2019 Luxoft Sweden AB
// Copyright (C) 2018 Pelagicore AG
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QIFPENDINGREPLY_H
#define QIFPENDINGREPLY_H
#include <QtQml/QJSValue>
#include <QtCore/QObject>
#include <QtCore/QSharedPointer>
#include <QtCore/QVariant>
#include <QtCore/QDebug>
#include <QtCore/QMetaEnum>
#include <QtInterfaceFramework/qtifglobal.h>
QT_BEGIN_NAMESPACE
class QIfPendingReplyWatcherPrivate;
Q_QTINTERFACEFRAMEWORK_EXPORT void qifRegisterPendingReplyBasicTypes();
// AXIVION Next Line Qt-CtorMissingParentArgument: private ctor
class Q_QTINTERFACEFRAMEWORK_EXPORT QIfPendingReplyWatcher : public QObject
{
Q_OBJECT
Q_PROPERTY(QVariant value READ value NOTIFY valueChanged FINAL)
Q_PROPERTY(bool valid READ isValid CONSTANT FINAL)
Q_PROPERTY(bool resultAvailable READ isResultAvailable NOTIFY valueChanged FINAL)
Q_PROPERTY(bool success READ isSuccessful NOTIFY valueChanged FINAL)
public:
QVariant value() const;
bool isValid() const;
bool isResultAvailable() const;
bool isSuccessful() const;
Q_INVOKABLE void setSuccess(const QVariant &value);
Q_INVOKABLE void setFailed();
Q_INVOKABLE void then(const QJSValue &success, const QJSValue &failed = QJSValue());
Q_SIGNALS:
void replyFailed();
void replySuccess();
void valueChanged(const QVariant &value);
private:
explicit QIfPendingReplyWatcher(int userType);
Q_DECLARE_PRIVATE(QIfPendingReplyWatcher)
friend class QIfPendingReplyBase;
};
class Q_QTINTERFACEFRAMEWORK_EXPORT QIfPendingReplyBase
{
Q_GADGET
Q_PROPERTY(QIfPendingReplyWatcher* watcher READ watcher FINAL)
Q_PROPERTY(QVariant value READ value FINAL)
Q_PROPERTY(bool valid READ isValid FINAL)
Q_PROPERTY(bool resultAvailable READ isResultAvailable FINAL)
Q_PROPERTY(bool success READ isSuccessful FINAL)
public:
explicit QIfPendingReplyBase(int userType);
QIfPendingReplyBase() = default;
QIfPendingReplyBase(const QIfPendingReplyBase & other);
~QIfPendingReplyBase() = default;
QIfPendingReplyBase& operator=(const QIfPendingReplyBase&) = default;
QIfPendingReplyBase& operator=(QIfPendingReplyBase&&) = default;
QIfPendingReplyWatcher* watcher() const;
QVariant value() const;
bool isValid() const;
bool isResultAvailable() const;
bool isSuccessful() const;
Q_INVOKABLE void then(const QJSValue &success, const QJSValue &failed = QJSValue());
Q_INVOKABLE void setSuccess(const QVariant & value);
Q_INVOKABLE void setFailed();
protected:
void setSuccessNoCheck(const QVariant & value);
QSharedPointer<QIfPendingReplyWatcher> m_watcher;
};
template <typename T> class QIfPendingReply : public QIfPendingReplyBase
{
public:
QIfPendingReply(const T &successValue)
: QIfPendingReply()
{
setSuccess(successValue);
}
QIfPendingReply()
: QIfPendingReplyBase(qMetaTypeId<T>())
{}
using QIfPendingReplyBase::setSuccess;
void setSuccess(const T &val)
{
setSuccessNoCheck(QVariant::fromValue(val));
}
T reply() const { return m_watcher->value().template value<T>(); }
using QIfPendingReplyBase::then;
void then(const std::function<void(const T &)> &success, const std::function<void()> &failed = std::function<void()>()) {
if (isResultAvailable()) {
if (isSuccessful() && success)
success(reply());
else if (failed)
failed();
} else {
QSharedPointer<QIfPendingReplyWatcher> w = m_watcher;
if (success) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replySuccess, watcher(), [success, w]() {
success(w->value().value<T>());
});
}
if (failed) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replyFailed, watcher(), [failed]() {
failed();
});
}
}
}
static QIfPendingReply createFailedReply()
{
QIfPendingReply<T> reply;
reply.setFailed();
return reply;
}
};
template <> class QIfPendingReply <QVariant> : public QIfPendingReplyBase
{
public:
QIfPendingReply(const QVariant &successValue)
: QIfPendingReply()
{
setSuccess(successValue);
}
QIfPendingReply()
: QIfPendingReplyBase(qMetaTypeId<QVariant>())
{}
void setSuccess(const QVariant &val)
{
setSuccessNoCheck(val);
}
QVariant reply() const { return m_watcher->value(); }
void then(const std::function<void(const QVariant &)> &success, const std::function<void()> &failed = std::function<void()>()) {
if (isResultAvailable()) {
if (isSuccessful() && success)
success(reply());
else if (failed)
failed();
} else {
QSharedPointer<QIfPendingReplyWatcher> w = m_watcher;
if (success) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replySuccess, watcher(), [success, w]() {
success(w->value());
});
}
if (failed) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replyFailed, watcher(), [failed]() {
failed();
});
}
}
}
static QIfPendingReply createFailedReply()
{
QIfPendingReply<QVariant> reply;
reply.setFailed();
return reply;
}
};
template <> class QIfPendingReply <void> : public QIfPendingReplyBase
{
public:
QIfPendingReply()
: QIfPendingReplyBase(qMetaTypeId<void>())
{}
using QIfPendingReplyBase::setSuccess;
void setSuccess()
{
setSuccessNoCheck(QVariant());
}
void reply() const { return; }
void then(const std::function<void()> &success, const std::function<void()> &failed = std::function<void()>()) {
if (isResultAvailable()) {
if (isSuccessful() && success)
success();
else if (failed)
failed();
} else {
QSharedPointer<QIfPendingReplyWatcher> w = m_watcher;
if (success) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replySuccess, watcher(), [success, w]() {
success();
});
}
if (failed) {
QObject::connect(watcher(), &QIfPendingReplyWatcher::replyFailed, watcher(), [failed]() {
failed();
});
}
}
}
static QIfPendingReply createFailedReply()
{
QIfPendingReply<void> reply;
reply.setFailed();
return reply;
}
};
//Workaround for QTBUG-83664
//If T is a enum
template <typename T> Q_INLINE_TEMPLATE typename std::enable_if<QtPrivate::IsQEnumHelper<T>::Value, void>::type qIfRegisterPendingReplyType(const char *name = nullptr)
{
qRegisterMetaType<T>();
QString n;
if (name) {
n = QLatin1String(name);
} else {
QMetaEnum me = QMetaEnum::fromType<T>();
if (me.isValid() && me.isFlag())
n = QLatin1String(me.scope()) + QLatin1String("::") + QLatin1String(me.name());
else
n = QLatin1String(QMetaType(qMetaTypeId<T>()).name());
}
const QString t_name = QLatin1String("QIfPendingReply<") + n + QLatin1String(">");
qRegisterMetaType<QIfPendingReplyBase>(qPrintable(t_name));
}
//If T is NOT a enum
template <typename T> Q_INLINE_TEMPLATE typename std::enable_if<!QtPrivate::IsQEnumHelper<T>::Value, void>::type qIfRegisterPendingReplyType(const char *name = nullptr)
{
qRegisterMetaType<T>();
const char* n = name ? name : QMetaType(qMetaTypeId<T>()).name();
const QString t_name = QLatin1String("QIfPendingReply<") + QLatin1String(n) + QLatin1String(">");
qRegisterMetaType<QIfPendingReplyBase>(qPrintable(t_name));
}
QT_END_NAMESPACE
#endif // QIFPENDINGREPLY_H
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