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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.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#ifdef QT_STATEMACHINE_SOLUTION
#include <qstatemachine.h>
#include <qstate.h>
#include <qfinalstate.h>
#include <qhistorystate.h>
#endif
class Window : public QWidget
{
public:
Window(QWidget *parent = 0)
: QWidget(parent)
{
QPushButton *pb = new QPushButton("Go");
QPushButton *pauseButton = new QPushButton("Pause");
QPushButton *quitButton = new QPushButton("Quit");
QVBoxLayout *vbox = new QVBoxLayout(this);
vbox->addWidget(pb);
vbox->addWidget(pauseButton);
vbox->addWidget(quitButton);
QStateMachine *machine = new QStateMachine(this);
QState *process = new QState(machine->rootState());
process->setObjectName("process");
QState *s1 = new QState(process);
s1->setObjectName("s1");
QState *s2 = new QState(process);
s2->setObjectName("s2");
s1->addTransition(pb, SIGNAL(clicked()), s2);
s2->addTransition(pb, SIGNAL(clicked()), s1);
QHistoryState *h = new QHistoryState(process);
h->setDefaultState(s1);
QState *interrupted = new QState(machine->rootState());
interrupted->setObjectName("interrupted");
QFinalState *terminated = new QFinalState(machine->rootState());
terminated->setObjectName("terminated");
interrupted->addTransition(pauseButton, SIGNAL(clicked()), h);
interrupted->addTransition(quitButton, SIGNAL(clicked()), terminated);
process->addTransition(pauseButton, SIGNAL(clicked()), interrupted);
process->addTransition(quitButton, SIGNAL(clicked()), terminated);
process->setInitialState(s1);
machine->setInitialState(process);
QObject::connect(machine, SIGNAL(finished()), QApplication::instance(), SLOT(quit()));
machine->start();
}
};
int main(int argc, char **argv)
{
QApplication app(argc, argv);
Window win;
win.show();
return app.exec();
}
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