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 46 QT_REQUIRE_CONFIG(statemachine); 47 48 QT_BEGIN_NAMESPACE 49 50 class QSignalTransitionPrivate; 51 class 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 57 public: 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 82 protected: 83 bool eventTest(QEvent *event) override; 84 void onTransition(QEvent *event) override; 85 86 bool event(QEvent *e) override; 87 88 Q_SIGNALS: 89 void senderObjectChanged(QPrivateSignal); 90 void signalChanged(QPrivateSignal); 91 92 private: 93 Q_DISABLE_COPY(QSignalTransition) 94 Q_DECLARE_PRIVATE(QSignalTransition) 95 }; 96 97 QT_END_NAMESPACE 98 99 #endif 100