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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSTATEMACHINE_H
#define QSTATEMACHINE_H
#include <QtCore/qabstractstate.h>
#include <QtCore/qlist.h>
#include <QtCore/qobject.h>
#include <QtCore/qset.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
#ifndef QT_NO_STATEMACHINE
class QEvent;
class QAbstractState;
class QState;
class QStateMachinePrivate;
class QAbstractAnimation;
class QAbstractState;
class Q_CORE_EXPORT QStateMachine : public QObject
{
Q_OBJECT
Q_PROPERTY(QState* rootState READ rootState)
Q_PROPERTY(QAbstractState* initialState READ initialState WRITE setInitialState)
Q_PROPERTY(QAbstractState* errorState READ errorState WRITE setErrorState)
Q_PROPERTY(QString errorString READ errorString)
Q_PROPERTY(RestorePolicy globalRestorePolicy READ globalRestorePolicy WRITE setGlobalRestorePolicy)
Q_ENUMS(RestorePolicy)
#ifndef QT_NO_ANIMATION
Q_PROPERTY(bool animationsEnabled READ animationsEnabled WRITE setAnimationsEnabled)
#endif
public:
enum RestorePolicy {
DoNotRestoreProperties,
RestoreProperties
};
enum Error {
NoError,
NoInitialStateError,
NoDefaultStateInHistoryStateError,
NoCommonAncestorForTransitionError
};
QStateMachine(QObject *parent = 0);
~QStateMachine();
void addState(QAbstractState *state);
void removeState(QAbstractState *state);
QState *rootState() const;
QAbstractState *initialState() const;
void setInitialState(QAbstractState *state);
QAbstractState *errorState() const;
void setErrorState(QAbstractState *state);
Error error() const;
QString errorString() const;
void clearError();
bool isRunning() const;
#ifndef QT_NO_ANIMATION
bool animationsEnabled() const;
void setAnimationsEnabled(bool enabled);
void addDefaultAnimation(QAbstractAnimation *animation);
QList<QAbstractAnimation *> defaultAnimations() const;
void removeDefaultAnimation(QAbstractAnimation *animation);
#endif // QT_NO_ANIMATION
QStateMachine::RestorePolicy globalRestorePolicy() const;
void setGlobalRestorePolicy(QStateMachine::RestorePolicy restorePolicy);
void postEvent(QEvent *event, int delay = 0);
QSet<QAbstractState*> configuration() const;
#ifndef QT_NO_STATEMACHINE_EVENTFILTER
bool eventFilter(QObject *watched, QEvent *event);
#endif
public Q_SLOTS:
void start();
void stop();
Q_SIGNALS:
void started();
void stopped();
void finished();
protected:
void postInternalEvent(QEvent *event);
virtual void beginSelectTransitions(QEvent *event);
virtual void endSelectTransitions(QEvent *event);
virtual void beginMicrostep(QEvent *event);
virtual void endMicrostep(QEvent *event);
bool event(QEvent *e);
protected:
QStateMachine(QStateMachinePrivate &dd, QObject *parent);
private:
Q_DISABLE_COPY(QStateMachine)
Q_DECLARE_PRIVATE(QStateMachine)
Q_PRIVATE_SLOT(d_func(), void _q_start())
Q_PRIVATE_SLOT(d_func(), void _q_process())
#ifndef QT_NO_ANIMATION
Q_PRIVATE_SLOT(d_func(), void _q_animationFinished())
#endif
};
#endif //QT_NO_STATEMACHINE
QT_END_NAMESPACE
QT_END_HEADER
#endif
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