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****************************************************************************/

#ifndef QHISTORYSTATE_H
#define QHISTORYSTATE_H

#include <QtCore/qabstractstate.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifndef QT_NO_STATEMACHINE

class QHistoryStatePrivate;
class Q_CORE_EXPORT QHistoryState : public QAbstractState
{
    Q_OBJECT
    Q_PROPERTY(QAbstractState* defaultState READ defaultState WRITE setDefaultState)
    Q_PROPERTY(HistoryType historyType READ historyType WRITE setHistoryType)
    Q_ENUMS(HistoryType)
public:
    enum HistoryType {
        ShallowHistory,
        DeepHistory
    };

    QHistoryState(QState *parent = 0);
    QHistoryState(HistoryType type, QState *parent = 0);
    ~QHistoryState();

    QAbstractState *defaultState() const;
    void setDefaultState(QAbstractState *state);

    HistoryType historyType() const;
    void setHistoryType(HistoryType type);

protected:
    void onEntry(QEvent *event);
    void onExit(QEvent *event);

    bool event(QEvent *e);

private:
    Q_DISABLE_COPY(QHistoryState)
    Q_DECLARE_PRIVATE(QHistoryState)
};

#endif //QT_NO_STATEMACHINE

QT_END_NAMESPACE

QT_END_HEADER

#endif