summaryrefslogtreecommitdiffstats
path: root/src/corelib/statemachine/qfinalstate.cpp
blob: 761eee4dd9b7d0ceef8eda6b5017ebf0a41077ca (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/****************************************************************************
**
** 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qfinalstate.h"

#ifndef QT_NO_STATEMACHINE

#include "qabstractstate_p.h"

QT_BEGIN_NAMESPACE

/*!
  \class QFinalState

  \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 QStateMachine::finished(), QState::finished()
*/

class QFinalStatePrivate : public QAbstractStatePrivate
{
    Q_DECLARE_PUBLIC(QFinalState)

public:
    QFinalStatePrivate();
};

QFinalStatePrivate::QFinalStatePrivate()
{
}

/*!
  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