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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QQMLINCUBATOR_H
#define QQMLINCUBATOR_H
#include <QtQml/qtqmlglobal.h>
#include <QtQml/qqmlerror.h>
#include <atomic>
QT_BEGIN_NAMESPACE
class QQmlEngine;
class QQmlPropertyData;
class QVariant;
using QVariantMap = QMap<QString, QVariant>;
class QQmlIncubatorPrivate;
class Q_QML_EXPORT QQmlIncubator
{
Q_DISABLE_COPY(QQmlIncubator)
public:
enum IncubationMode {
Asynchronous,
AsynchronousIfNested,
Synchronous
};
enum Status {
Null,
Ready,
Loading,
Error
};
QQmlIncubator(IncubationMode = Asynchronous);
virtual ~QQmlIncubator();
void clear();
void forceCompletion();
bool isNull() const;
bool isReady() const;
bool isError() const;
bool isLoading() const;
QList<QQmlError> errors() const;
IncubationMode incubationMode() const;
Status status() const;
QObject *object() const;
void setInitialProperties(const QVariantMap &initialProperties);
protected:
virtual void statusChanged(Status);
virtual void setInitialState(QObject *);
private:
friend class QQmlComponent;
friend class QQmlEnginePrivate;
friend class QQmlIncubatorPrivate;
QQmlIncubatorPrivate *d;
};
class QQmlEnginePrivate;
class Q_QML_EXPORT QQmlIncubationController
{
Q_DISABLE_COPY(QQmlIncubationController)
public:
QQmlIncubationController();
virtual ~QQmlIncubationController();
QQmlEngine *engine() const;
int incubatingObjectCount() const;
void incubateFor(int msecs);
#if QT_DEPRECATED_SINCE(5, 15)
QT_DEPRECATED_VERSION_X(5, 15, "Use the overload that takes a std::atomic<bool>")
void incubateWhile(volatile bool *flag, int msecs=0);
#endif
void incubateWhile(std::atomic<bool> *flag, int msecs = 0);
protected:
virtual void incubatingObjectCountChanged(int);
private:
friend class QQmlEngine;
friend class QQmlEnginePrivate;
friend class QQmlIncubatorPrivate;
QQmlEnginePrivate *d;
};
QT_END_NAMESPACE
#endif // QQMLINCUBATOR_H
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