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#ifndef QDECLARATIVESTATE_P_H
#define QDECLARATIVESTATE_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 "private/qdeclarativestate_p.h"

#include "private/qdeclarativeanimation_p_p.h"
#include "private/qdeclarativetransitionmanager_p_p.h"

#include <private/qdeclarativeproperty_p.h>
#include <private/qdeclarativeguard_p.h>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class QDeclarativeSimpleAction
{
public:
    enum State { StartState, EndState };
    QDeclarativeSimpleAction(const QDeclarativeAction &a, State state = StartState) 
    {
        property = a.property;
        specifiedObject = a.specifiedObject;
        specifiedProperty = a.specifiedProperty;
        event = a.event;
        if (state == StartState) {
            value = a.fromValue;
            binding = QDeclarativePropertyPrivate::binding(property);
            reverseEvent = true;
        } else {
            value = a.toValue;
            binding = a.toBinding;
            reverseEvent = false;
        }
    }

    QDeclarativeProperty property;
    QVariant value;
    QDeclarativeAbstractBinding *binding;
    QObject *specifiedObject;
    QString specifiedProperty;
    QDeclarativeActionEvent *event;
    bool reverseEvent;
};

class QDeclarativeStatePrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QDeclarativeState)

public:
    QDeclarativeStatePrivate()
    : when(0), inState(false), group(0) {}

    typedef QList<QDeclarativeSimpleAction> SimpleActionList;

    QString name;
    QDeclarativeBinding *when;

    struct OperationGuard : public QDeclarativeGuard<QDeclarativeStateOperation>
    {
        OperationGuard(QObject *obj, QList<OperationGuard> *l) : list(l) { (QDeclarativeGuard<QObject>&)*this = obj; }
        QList<OperationGuard> *list;
        void objectDestroyed(QDeclarativeStateOperation *) {
            // we assume priv will always be destroyed after objectDestroyed calls
            list->removeOne(*this);
        }
    };
    QList<OperationGuard> operations;

    static void operations_append(QDeclarativeListProperty<QDeclarativeStateOperation> *prop, QDeclarativeStateOperation *op) {
        QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);
        list->append(OperationGuard(op, list));
    }
    static void operations_clear(QDeclarativeListProperty<QDeclarativeStateOperation> *prop) {
        QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);
        list->clear();
    }
    static int operations_count(QDeclarativeListProperty<QDeclarativeStateOperation> *prop) {
        QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);
        return list->count();
    }
    static QDeclarativeStateOperation *operations_at(QDeclarativeListProperty<QDeclarativeStateOperation> *prop, int index) {
        QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);
        return list->at(index);
    }

    QDeclarativeTransitionManager transitionManager;

    SimpleActionList revertList;
    QList<QDeclarativeProperty> reverting;
    QString extends;
    mutable bool inState;
    QDeclarativeStateGroup *group;

    QDeclarativeStateOperation::ActionList generateActionList(QDeclarativeStateGroup *) const;
    void complete();
};

QT_END_NAMESPACE

#endif // QDECLARATIVESTATE_P_H
