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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTANIMATIONJOB_P_H
+#define QABSTRACTANIMATIONJOB_P_H
+
+#include <QtQml/qtqmlglobal.h>
+#include <QtCore/QObject>
+#include <QtCore/private/qabstractanimation_p.h>
+#include "private/qpodvector_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Qml)
+
+class QAnimationGroupJob;
+class QAnimationJobChangeListener;
+class Q_QML_EXPORT QAbstractAnimationJob
+{
+    Q_DISABLE_COPY(QAbstractAnimationJob)
+public:
+    enum Direction {
+        Forward,
+        Backward
+    };
+
+    enum State {
+        Stopped,
+        Paused,
+        Running
+    };
+
+    QAbstractAnimationJob();
+    virtual ~QAbstractAnimationJob();
+
+    //definition
+    inline QAnimationGroupJob *group() const {return m_group;}
+
+    inline int loopCount() const {return m_loopCount;}
+    void setLoopCount(int loopCount);
+
+    int totalDuration() const;
+    virtual int duration() const {return 0;}
+
+    inline QAbstractAnimationJob::Direction direction() const {return m_direction;}
+    void setDirection(QAbstractAnimationJob::Direction direction);
+
+    //state
+    inline int currentTime() const {return m_totalCurrentTime;}
+    inline int currentLoopTime() const {return m_currentTime;}
+    inline int currentLoop() const {return m_currentLoop;}
+    inline QAbstractAnimationJob::State state() const {return m_state;}
+    inline bool isRunning() { return m_state == Running; }
+    inline bool isStopped() { return m_state == Stopped; }
+    inline bool isPaused() { return m_state == Paused; }
+
+    void setCurrentTime(int msecs);
+
+    void start();
+    void pause();
+    void resume();
+    void stop();
+
+    enum ChangeType {
+        Completion = 0x01,
+        StateChange = 0x02,
+        CurrentLoop = 0x04
+    };
+    Q_DECLARE_FLAGS(ChangeTypes, ChangeType)
+
+    void addAnimationChangeListener(QAnimationJobChangeListener *listener, QAbstractAnimationJob::ChangeTypes);
+    void removeAnimationChangeListener(QAnimationJobChangeListener *listener, QAbstractAnimationJob::ChangeTypes);
+
+    QAbstractAnimationJob *nextSibling() const { return m_nextSibling; }
+    QAbstractAnimationJob *previousSibling() const { return m_previousSibling; }
+
+protected:
+    virtual void updateCurrentTime(int) {}
+    virtual void updateState(QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState);
+    virtual void updateDirection(QAbstractAnimationJob::Direction direction);
+    virtual void topLevelAnimationLoopChanged() {}
+
+    void setState(QAbstractAnimationJob::State state);
+
+    void finished();
+    void stateChanged(QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState);
+    void currentLoopChanged(int currentLoop);
+    void directionChanged(QAbstractAnimationJob::Direction);
+
+    //definition
+    bool m_isPause;
+    bool m_isGroup;
+    int m_loopCount;
+    QAnimationGroupJob *m_group;
+    QAbstractAnimationJob::Direction m_direction;
+
+    //state
+    QAbstractAnimationJob::State m_state;
+    int m_totalCurrentTime;
+    int m_currentTime;
+    int m_currentLoop;
+    bool m_hasRegisteredTimer;
+    //records the finish time for an uncontrolled animation (used by animation groups)
+    int m_uncontrolledFinishTime;
+    bool *m_wasDeleted;
+
+    struct ChangeListener {
+        ChangeListener(QAnimationJobChangeListener *l, QAbstractAnimationJob::ChangeTypes t) : listener(l), types(t) {}
+        QAnimationJobChangeListener *listener;
+        QAbstractAnimationJob::ChangeTypes types;
+        bool operator==(const ChangeListener &other) const { return listener == other.listener && types == other.types; }
+    };
+    QPODVector<ChangeListener,4> changeListeners;
+
+    QAbstractAnimationJob *m_nextSibling;
+    QAbstractAnimationJob *m_previousSibling;
+
+    friend class QQmlAnimationTimer;
+    friend class QAnimationGroupJob;
+};
+
+class Q_AUTOTEST_EXPORT QAnimationJobChangeListener
+{
+public:
+    virtual void animationFinished(QAbstractAnimationJob *) {}
+    virtual void animationStateChanged(QAbstractAnimationJob *, QAbstractAnimationJob::State, QAbstractAnimationJob::State) {}
+    virtual void animationCurrentLoopChanged(QAbstractAnimationJob *) {}
+};
+
+class Q_QML_EXPORT QQmlAnimationTimer : public QAbstractAnimationTimer
+{
+    Q_OBJECT
+private:
+    QQmlAnimationTimer();
+
+public:
+    static QQmlAnimationTimer *instance();
+    static QQmlAnimationTimer *instance(bool create);
+
+    static void registerAnimation(QAbstractAnimationJob *animation, bool isTopLevel);
+    static void unregisterAnimation(QAbstractAnimationJob *animation);
+
+    /*
+        this is used for updating the currentTime of all animations in case the pause
+        timer is active or, otherwise, only of the animation passed as parameter.
+    */
+    static void ensureTimerUpdate();
+
+    /*
+        this will evaluate the need of restarting the pause timer in case there is still
+        some pause animations running.
+    */
+    static void updateAnimationTimer();
+
+    void restartAnimationTimer();
+    void updateAnimationsTime(qint64 timeStep);
+
+    int currentDelta() { return lastDelta; }
+
+    //useful for profiling/debugging
+    int runningAnimationCount() { return animations.count(); }
+
+private Q_SLOTS:
+    void startAnimations();
+    void stopTimer();
+
+private:
+    qint64 lastTick;
+    int lastDelta;
+    int currentAnimationIdx;
+    bool insideTick;
+    bool startAnimationPending;
+    bool stopTimerPending;
+
+    QList<QAbstractAnimationJob*> animations, animationsToStart;
+
+    // this is the count of running animations that are not a group neither a pause animation
+    int runningLeafAnimations;
+    QList<QAbstractAnimationJob*> runningPauseAnimations;
+
+    void registerRunningAnimation(QAbstractAnimationJob *animation);
+    void unregisterRunningAnimation(QAbstractAnimationJob *animation);
+
+    int closestPauseAnimationTimeToFinish();
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QAbstractAnimationJob::ChangeTypes)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QABSTRACTANIMATIONJOB_P_H