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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qfinalstate.h"
#ifndef QT_NO_STATEMACHINE
#include "qabstractstate_p.h"
QT_BEGIN_NAMESPACE
/*!
\class QFinalState
\inmodule QtCore
\brief The QFinalState class provides a final state.
\since 4.6
\ingroup statemachine
A final state is used to communicate that (part of) a QStateMachine has
finished its work. When a final top-level state is entered, the state
machine's \l{QStateMachine::finished()}{finished}() signal is emitted. In
general, when a final substate (a child of a QState) is entered, the parent
state's \l{QState::finished()}{finished}() signal is emitted. QFinalState
is part of \l{The State Machine Framework}.
To use a final state, you create a QFinalState object and add a transition
to it from another state. Example:
\code
QPushButton button;
QStateMachine machine;
QState *s1 = new QState();
QFinalState *s2 = new QFinalState();
s1->addTransition(&button, SIGNAL(clicked()), s2);
machine.addState(s1);
machine.addState(s2);
QObject::connect(&machine, SIGNAL(finished()), QApplication::instance(), SLOT(quit()));
machine.setInitialState(s1);
machine.start();
\endcode
\sa QState::finished()
*/
class QFinalStatePrivate : public QAbstractStatePrivate
{
Q_DECLARE_PUBLIC(QFinalState)
public:
QFinalStatePrivate();
};
QFinalStatePrivate::QFinalStatePrivate()
: QAbstractStatePrivate(FinalState)
{
}
/*!
Constructs a new QFinalState object with the given \a parent state.
*/
QFinalState::QFinalState(QState *parent)
: QAbstractState(*new QFinalStatePrivate, parent)
{
}
/*!
Destroys this final state.
*/
QFinalState::~QFinalState()
{
}
/*!
\reimp
*/
void QFinalState::onEntry(QEvent *event)
{
Q_UNUSED(event);
}
/*!
\reimp
*/
void QFinalState::onExit(QEvent *event)
{
Q_UNUSED(event);
}
/*!
\reimp
*/
bool QFinalState::event(QEvent *e)
{
return QAbstractState::event(e);
}
QT_END_NAMESPACE
#endif //QT_NO_STATEMACHINE
|
