1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtCore module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QSIGNALTRANSITION_H
41#define QSIGNALTRANSITION_H
42
43#include <QtCore/qabstracttransition.h>
44#include <QtCore/qmetaobject.h>
45
46QT_REQUIRE_CONFIG(statemachine);
47
48QT_BEGIN_NAMESPACE
49
50class QSignalTransitionPrivate;
51class Q_CORE_EXPORT QSignalTransition : public QAbstractTransition
52{
53 Q_OBJECT
54 Q_PROPERTY(QObject* senderObject READ senderObject WRITE setSenderObject NOTIFY senderObjectChanged)
55 Q_PROPERTY(QByteArray signal READ signal WRITE setSignal NOTIFY signalChanged)
56
57public:
58 QSignalTransition(QState *sourceState = nullptr);
59 QSignalTransition(const QObject *sender, const char *signal,
60 QState *sourceState = nullptr);
61#ifdef Q_QDOC
62 template<typename PointerToMemberFunction>
63 QSignalTransition(const QObject *object, PointerToMemberFunction signal,
64 QState *sourceState = nullptr);
65#elif defined(Q_COMPILER_DELEGATING_CONSTRUCTORS)
66 template <typename Func>
67 QSignalTransition(const typename QtPrivate::FunctionPointer<Func>::Object *obj,
68 Func sig, QState *srcState = nullptr)
69 : QSignalTransition(obj, QMetaMethod::fromSignal(sig).methodSignature().constData(), srcState)
70 {
71 }
72#endif
73
74 ~QSignalTransition();
75
76 QObject *senderObject() const;
77 void setSenderObject(const QObject *sender);
78
79 QByteArray signal() const;
80 void setSignal(const QByteArray &signal);
81
82protected:
83 bool eventTest(QEvent *event) override;
84 void onTransition(QEvent *event) override;
85
86 bool event(QEvent *e) override;
87
88Q_SIGNALS:
89 void senderObjectChanged(QPrivateSignal);
90 void signalChanged(QPrivateSignal);
91
92private:
93 Q_DISABLE_COPY(QSignalTransition)
94 Q_DECLARE_PRIVATE(QSignalTransition)
95};
96
97QT_END_NAMESPACE
98
99#endif
100