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#ifndef QSGPARTICLEGROUP
#define QSGPARTICLEGROUP
#include "qsgspriteengine_p.h"
#include "qsgparticlesystem_p.h"
#include "qdeclarativeparserstatus.h"

class QSGParticleGroup : public QSGStochasticState, public QDeclarativeParserStatus
{
    Q_OBJECT
    //### Would setting limits per group be useful? Or clutter the API?
    //Q_PROPERTY(int maximumAlive READ maximumAlive WRITE setMaximumAlive NOTIFY maximumAliveChanged)

    Q_PROPERTY(QSGParticleSystem* system READ system WRITE setSystem NOTIFY systemChanged)

    //Intercept children requests and assign to the group & system
    Q_PROPERTY(QDeclarativeListProperty<QObject> particleChildren READ particleChildren DESIGNABLE false)//### Hidden property for in-state system definitions - ought not to be used in actual "Sprite" states
    Q_CLASSINFO("DefaultProperty", "particleChildren")

public:
    explicit QSGParticleGroup(QObject* parent = 0);

    QDeclarativeListProperty<QObject> particleChildren();

    int maximumAlive() const
    {
        return m_maximumAlive;
    }

    QSGParticleSystem* system() const
    {
        return m_system;
    }

public slots:

    void setMaximumAlive(int arg)
    {
        if (m_maximumAlive != arg) {
            m_maximumAlive = arg;
            emit maximumAliveChanged(arg);
        }
    }

    void setSystem(QSGParticleSystem* arg);

    void delayRedirect(QObject* obj);

signals:

    void maximumAliveChanged(int arg);

    void systemChanged(QSGParticleSystem* arg);

protected:
    virtual void componentComplete();
    virtual void classBegin(){;}

private:

    void performDelayedRedirects();

    int m_maximumAlive;
    QSGParticleSystem* m_system;
    QList<QObject*> m_delayedRedirects;
};

#endif