src/corelib/statemachine/qfinalstate.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 22 Jan 2010 10:32:13 +0200
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Revision: 201001 Kit: 201003
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qfinalstate.h"
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#ifndef QT_NO_STATEMACHINE
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#include "qabstractstate_p.h"
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QT_BEGIN_NAMESPACE
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/*!
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  \class QFinalState
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  \brief The QFinalState class provides a final state.
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  \since 4.6
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  \ingroup statemachine
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  A final state is used to communicate that (part of) a QStateMachine has
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  finished its work. When a final top-level state is entered, the state
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  machine's \l{QStateMachine::finished()}{finished}() signal is emitted. In
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  general, when a final substate (a child of a QState) is entered, the parent
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  state's \l{QState::finished()}{finished}() signal is emitted.  QFinalState
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  is part of \l{The State Machine Framework}.
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  To use a final state, you create a QFinalState object and add a transition
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  to it from another state. Example:
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  \code
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  QPushButton button;
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  QStateMachine machine;
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  QState *s1 = new QState();
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  QFinalState *s2 = new QFinalState();
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  s1->addTransition(&button, SIGNAL(clicked()), s2);
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  machine.addState(s1);
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  machine.addState(s2);
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  QObject::connect(&machine, SIGNAL(finished()), QApplication::instance(), SLOT(quit()));
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  machine.setInitialState(s1);
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  machine.start();
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  \endcode
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  \sa QStateMachine::finished(), QState::finished()
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*/
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class QFinalStatePrivate : public QAbstractStatePrivate
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{
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    Q_DECLARE_PUBLIC(QFinalState)
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public:
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    QFinalStatePrivate();
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};
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QFinalStatePrivate::QFinalStatePrivate()
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{
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}
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/*!
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  Constructs a new QFinalState object with the given \a parent state.
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*/
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QFinalState::QFinalState(QState *parent)
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    : QAbstractState(*new QFinalStatePrivate, parent)
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{
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}
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/*!
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  Destroys this final state.
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*/
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QFinalState::~QFinalState()
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{
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}
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/*!
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  \reimp
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*/
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void QFinalState::onEntry(QEvent *event)
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{
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    Q_UNUSED(event);
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}
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/*!
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  \reimp
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*/
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void QFinalState::onExit(QEvent *event)
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{
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    Q_UNUSED(event);
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}
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/*!
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  \reimp
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*/
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bool QFinalState::event(QEvent *e)
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{
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    return QAbstractState::event(e);
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}
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QT_END_NAMESPACE
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#endif //QT_NO_STATEMACHINE