/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
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****************************************************************************/

#ifndef QQMLABSTRACTPROFILERADAPTER_P_H
#define QQMLABSTRACTPROFILERADAPTER_P_H

#include <private/qtqmlglobal_p.h>
#include <private/qqmlprofilerdefinitions_p.h>

#include <QtCore/QObject>
#include <QtCore/QElapsedTimer>

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

QT_BEGIN_NAMESPACE

class QQmlProfilerService;
class Q_QML_PRIVATE_EXPORT QQmlAbstractProfilerAdapter : public QObject, public QQmlProfilerDefinitions {
    Q_OBJECT

public:
    QQmlAbstractProfilerAdapter(QQmlProfilerService *service) :
        service(service), waiting(true), featuresEnabled(0) {}
    virtual ~QQmlAbstractProfilerAdapter() {}

    virtual qint64 sendMessages(qint64 until, QList<QByteArray> &messages) = 0;

    void startProfiling(quint64 features);

    void stopProfiling();

    void reportData() { emit dataRequested(); }

    void stopWaiting() { waiting = false; }
    void startWaiting() { waiting = true; }

    bool isRunning() const { return featuresEnabled != 0; }
    quint64 features() const { return featuresEnabled; }

    void synchronize(const QElapsedTimer &t) { emit referenceTimeKnown(t); }

signals:
    void profilingEnabled(quint64 features);
    void profilingEnabledWhileWaiting(quint64 features);

    void profilingDisabled();
    void profilingDisabledWhileWaiting();

    void dataRequested();
    void referenceTimeKnown(const QElapsedTimer &timer);

protected:
    QQmlProfilerService *service;

private:
    bool waiting;
    quint64 featuresEnabled;
};

QT_END_NAMESPACE

#endif // QQMLABSTRACTPROFILERADAPTER_P_H