/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Copyright (C) 2016 Gunnar Sletta <gunnar@sletta.org>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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****************************************************************************/

#ifndef QQUICKANIMATORCONTROLLER_P_H
#define QQUICKANIMATORCONTROLLER_P_H

//
//  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.
//

#include "qquickanimatorjob_p.h"
#include <QtQuick/qsgnode.h>
#include <QtQuick/qquickitem.h>

#include <QtCore/qmutex.h>
#include <QtCore/qthread.h>

QT_BEGIN_NAMESPACE

class QQuickAnimatorController : public QObject, public QAnimationJobChangeListener
{
    Q_OBJECT

public:
    QQuickAnimatorController(QQuickWindow *window);
    ~QQuickAnimatorController();

    void advance();
    void beforeNodeSync();
    void afterNodeSync();

    void animationFinished(QAbstractAnimationJob *job) override;
    void animationStateChanged(QAbstractAnimationJob *job, QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState) override;

    void requestSync();

    // These are called from the GUI thread (the proxy)
    void start(const QSharedPointer<QAbstractAnimationJob> &job);
    void cancel(const QSharedPointer<QAbstractAnimationJob> &job);
    bool isPendingStart(const QSharedPointer<QAbstractAnimationJob> &job) const { return m_rootsPendingStart.contains(job); }

    void lock() { m_mutex.lock(); }
    void unlock() { m_mutex.unlock(); }

    void proxyWasDestroyed(QQuickAnimatorProxyJob *proxy);
    void stopProxyJobs();
    void windowNodesDestroyed();

    QQuickWindow *window() const { return m_window; }

private:
    void start_helper(QAbstractAnimationJob *job);
    void cancel_helper(QAbstractAnimationJob *job);

public:
    QSet<QQuickAnimatorJob * > m_runningAnimators;
    QHash<QAbstractAnimationJob *, QSharedPointer<QAbstractAnimationJob> > m_animationRoots;
    QSet<QSharedPointer<QAbstractAnimationJob> > m_rootsPendingStop;
    QSet<QSharedPointer<QAbstractAnimationJob> > m_rootsPendingStart;

    QQuickWindow *m_window;
    QMutex m_mutex;
};



QT_END_NAMESPACE

#endif // QQUICKANIMATORCONTROLLER_P_H