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#ifndef QABSTRACTSTATE_H
#define QABSTRACTSTATE_H

#include <QtCore/qobject.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifndef QT_NO_STATEMACHINE

class QState;
class QStateMachine;

class QAbstractStatePrivate;
class Q_CORE_EXPORT QAbstractState : public QObject
{
    Q_OBJECT
public:
    ~QAbstractState();

    QState *parentState() const;
    QStateMachine *machine() const;

Q_SIGNALS:
#if !defined(Q_MOC_RUN) && !defined(qdoc)
private: // can only be emitted by QAbstractState
#endif
    void entered();
    void exited();

protected:
    QAbstractState(QState *parent = 0);

    virtual void onEntry(QEvent *event) = 0;
    virtual void onExit(QEvent *event) = 0;

    bool event(QEvent *e);

protected:
    QAbstractState(QAbstractStatePrivate &dd, QState *parent);

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

#endif //QT_NO_STATEMACHINE

QT_END_NAMESPACE

QT_END_HEADER

#endif
