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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSTATEMACHINE_H
#define QSTATEMACHINE_H
#include <QtCore/qstate.h>
#include <QtCore/qcoreevent.h>
#include <QtCore/qlist.h>
#include <QtCore/qobject.h>
#include <QtCore/qset.h>
#include <QtCore/qvariant.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
#ifndef QT_NO_STATEMACHINE
class QStateMachinePrivate;
class QAbstractAnimation;
class Q_CORE_EXPORT QStateMachine : public QState
{
Q_OBJECT
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:
class SignalEvent : public QEvent
{
public:
SignalEvent(QObject *sender, int signalIndex,
const QList<QVariant> &arguments);
~SignalEvent();
inline QObject *sender() const { return m_sender; }
inline int signalIndex() const { return m_signalIndex; }
inline QList<QVariant> arguments() const { return m_arguments; }
private:
QObject *m_sender;
int m_signalIndex;
QList<QVariant> m_arguments;
friend class QSignalTransitionPrivate;
};
class WrappedEvent : public QEvent
{
public:
WrappedEvent(QObject *object, QEvent *event);
~WrappedEvent();
inline QObject *object() const { return m_object; }
inline QEvent *event() const { return m_event; }
private:
QObject *m_object;
QEvent *m_event;
};
enum EventPriority {
NormalPriority,
HighPriority
};
enum RestorePolicy {
DoNotRestoreProperties,
RestoreProperties
};
enum Error {
NoError,
NoInitialStateError,
NoDefaultStateInHistoryStateError,
NoCommonAncestorForTransitionError
};
QStateMachine(QObject *parent = 0);
~QStateMachine();
void addState(QAbstractState *state);
void removeState(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, EventPriority priority = NormalPriority);
int postDelayedEvent(QEvent *event, int delay);
bool cancelDelayedEvent(int id);
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();
protected:
void onEntry(QEvent *event);
void onExit(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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