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| 1 | /**************************************************************************** | - |
| 2 | ** | - |
| 3 | ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). | - |
| 4 | ** Contact: http://www.qt-project.org/legal | - |
| 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 | - |
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| 15 | ** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software | - |
| 20 | ** Foundation and appearing in the file LICENSE.LGPL included in the | - |
| 21 | ** packaging of this file. Please review the following information to | - |
| 22 | ** ensure the GNU Lesser General Public License version 2.1 requirements | - |
| 23 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. | - |
| 24 | ** | - |
| 25 | ** In addition, as a special exception, Digia gives you certain additional | - |
| 26 | ** rights. These rights are described in the Digia Qt LGPL Exception | - |
| 27 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. | - |
| 28 | ** | - |
| 29 | ** GNU General Public License Usage | - |
| 30 | ** Alternatively, this file may be used under the terms of the GNU | - |
| 31 | ** General Public License version 3.0 as published by the Free Software | - |
| 32 | ** Foundation and appearing in the file LICENSE.GPL included in the | - |
| 33 | ** packaging of this file. Please review the following information to | - |
| 34 | ** ensure the GNU General Public License version 3.0 requirements will be | - |
| 35 | ** met: http://www.gnu.org/copyleft/gpl.html. | - |
| 36 | ** | - |
| 37 | ** | - |
| 38 | ** $QT_END_LICENSE$ | - |
| 39 | ** | - |
| 40 | ****************************************************************************/ | - |
| 41 | | - |
| 42 | #include "qsignaltransition.h" | - |
| 43 | | - |
| 44 | #ifndef QT_NO_STATEMACHINE | - |
| 45 | | - |
| 46 | #include "qsignaltransition_p.h" | - |
| 47 | #include "qstate.h" | - |
| 48 | #include "qstate_p.h" | - |
| 49 | #include "qstatemachine.h" | - |
| 50 | #include "qstatemachine_p.h" | - |
| 51 | #include <qdebug.h> | - |
| 52 | | - |
| 53 | QT_BEGIN_NAMESPACE | - |
| 54 | | - |
| 55 | /*! | - |
| 56 | \class QSignalTransition | - |
| 57 | \inmodule QtCore | - |
| 58 | | - |
| 59 | \brief The QSignalTransition class provides a transition based on a Qt signal. | - |
| 60 | | - |
| 61 | \since 4.6 | - |
| 62 | \ingroup statemachine | - |
| 63 | | - |
| 64 | Typically you would use the overload of QState::addTransition() that takes a | - |
| 65 | sender and signal as arguments, rather than creating QSignalTransition | - |
| 66 | objects directly. QSignalTransition is part of \l{The State Machine | - |
| 67 | Framework}. | - |
| 68 | | - |
| 69 | You can subclass QSignalTransition and reimplement eventTest() to make a | - |
| 70 | signal transition conditional; the event object passed to eventTest() will | - |
| 71 | be a QStateMachine::SignalEvent object. Example: | - |
| 72 | | - |
| 73 | \code | - |
| 74 | class CheckedTransition : public QSignalTransition | - |
| 75 | { | - |
| 76 | public: | - |
| 77 | CheckedTransition(QCheckBox *check) | - |
| 78 | : QSignalTransition(check, SIGNAL(stateChanged(int))) {} | - |
| 79 | protected: | - |
| 80 | bool eventTest(QEvent *e) { | - |
| 81 | if (!QSignalTransition::eventTest(e)) | - |
| 82 | return false; | - |
| 83 | QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(e); | - |
| 84 | return (se->arguments().at(0).toInt() == Qt::Checked); | - |
| 85 | } | - |
| 86 | }; | - |
| 87 | | - |
| 88 | ... | - |
| 89 | | - |
| 90 | QCheckBox *check = new QCheckBox(); | - |
| 91 | check->setTristate(true); | - |
| 92 | | - |
| 93 | QState *s1 = new QState(); | - |
| 94 | QState *s2 = new QState(); | - |
| 95 | CheckedTransition *t1 = new CheckedTransition(check); | - |
| 96 | t1->setTargetState(s2); | - |
| 97 | s1->addTransition(t1); | - |
| 98 | \endcode | - |
| 99 | */ | - |
| 100 | | - |
| 101 | /*! | - |
| 102 | \property QSignalTransition::senderObject | - |
| 103 | | - |
| 104 | \brief the sender object that this signal transition is associated with | - |
| 105 | */ | - |
| 106 | | - |
| 107 | /*! | - |
| 108 | \property QSignalTransition::signal | - |
| 109 | | - |
| 110 | \brief the signal that this signal transition is associated with | - |
| 111 | */ | - |
| 112 | | - |
| 113 | QSignalTransitionPrivate::QSignalTransitionPrivate() | - |
| 114 | { | - |
| 115 | sender = 0; executed (the execution status of this line is deduced): sender = 0; | - |
| 116 | signalIndex = -1; executed (the execution status of this line is deduced): signalIndex = -1; | - |
| 117 | } executed: }Execution Count:60 | 60 |
| 118 | | - |
| 119 | QSignalTransitionPrivate *QSignalTransitionPrivate::get(QSignalTransition *q) | - |
| 120 | { | - |
| 121 | return q->d_func(); executed: return q->d_func();Execution Count:1001483 | 1001483 |
| 122 | } | - |
| 123 | | - |
| 124 | void QSignalTransitionPrivate::unregister() | - |
| 125 | { | - |
| 126 | Q_Q(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransition * const q = q_func(); | - |
| 127 | if ((signalIndex == -1) || !machine()) evaluated: (signalIndex == -1)| yes Evaluation Count:100010 | yes Evaluation Count:100001 |
partially evaluated: !machine()| no Evaluation Count:0 | yes Evaluation Count:100002 |
| 0-100010 |
| 128 | return; executed: return;Execution Count:100010 | 100010 |
| 129 | QStateMachinePrivate::get(machine())->unregisterSignalTransition(q); executed (the execution status of this line is deduced): QStateMachinePrivate::get(machine())->unregisterSignalTransition(q); | - |
| 130 | } executed: }Execution Count:100003 | 100003 |
| 131 | | - |
| 132 | void QSignalTransitionPrivate::maybeRegister() | - |
| 133 | { | - |
| 134 | Q_Q(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransition * const q = q_func(); | - |
| 135 | if (QStateMachine *mach = machine()) evaluated: QStateMachine *mach = machine()| yes Evaluation Count:200009 | yes Evaluation Count:57 |
| 57-200009 |
| 136 | QStateMachinePrivate::get(mach)->maybeRegisterSignalTransition(q); executed: QStateMachinePrivate::get(mach)->maybeRegisterSignalTransition(q);Execution Count:200009 | 200009 |
| 137 | } executed: }Execution Count:200067 | 200067 |
| 138 | | - |
| 139 | /*! | - |
| 140 | Constructs a new signal transition with the given \a sourceState. | - |
| 141 | */ | - |
| 142 | QSignalTransition::QSignalTransition(QState *sourceState) | - |
| 143 | : QAbstractTransition(*new QSignalTransitionPrivate, sourceState) | - |
| 144 | { | - |
| 145 | } executed: }Execution Count:6 | 6 |
| 146 | | - |
| 147 | /*! | - |
| 148 | Constructs a new signal transition associated with the given \a signal of | - |
| 149 | the given \a sender, and with the given \a sourceState. | - |
| 150 | */ | - |
| 151 | QSignalTransition::QSignalTransition(const QObject *sender, const char *signal, | - |
| 152 | QState *sourceState) | - |
| 153 | : QAbstractTransition(*new QSignalTransitionPrivate, sourceState) | - |
| 154 | { | - |
| 155 | Q_D(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransitionPrivate * const d = d_func(); | - |
| 156 | d->sender = sender; executed (the execution status of this line is deduced): d->sender = sender; | - |
| 157 | d->signal = signal; executed (the execution status of this line is deduced): d->signal = signal; | - |
| 158 | d->maybeRegister(); executed (the execution status of this line is deduced): d->maybeRegister(); | - |
| 159 | } executed: }Execution Count:54 | 54 |
| 160 | | - |
| 161 | /*! | - |
| 162 | Destroys this signal transition. | - |
| 163 | */ | - |
| 164 | QSignalTransition::~QSignalTransition() | - |
| 165 | { | - |
| 166 | } | - |
| 167 | | - |
| 168 | /*! | - |
| 169 | Returns the sender object associated with this signal transition. | - |
| 170 | */ | - |
| 171 | QObject *QSignalTransition::senderObject() const | - |
| 172 | { | - |
| 173 | Q_D(const QSignalTransition); executed (the execution status of this line is deduced): const QSignalTransitionPrivate * const d = d_func(); | - |
| 174 | return const_cast<QObject *>(d->sender); executed: return const_cast<QObject *>(d->sender);Execution Count:135 | 135 |
| 175 | } | - |
| 176 | | - |
| 177 | /*! | - |
| 178 | Sets the \a sender object associated with this signal transition. | - |
| 179 | */ | - |
| 180 | void QSignalTransition::setSenderObject(const QObject *sender) | - |
| 181 | { | - |
| 182 | Q_D(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransitionPrivate * const d = d_func(); | - |
| 183 | if (sender == d->sender) partially evaluated: sender == d->sender| no Evaluation Count:0 | yes Evaluation Count:200000 |
| 0-200000 |
| 184 | return; | 0 |
| 185 | d->unregister(); executed (the execution status of this line is deduced): d->unregister(); | - |
| 186 | d->sender = sender; executed (the execution status of this line is deduced): d->sender = sender; | - |
| 187 | d->maybeRegister(); executed (the execution status of this line is deduced): d->maybeRegister(); | - |
| 188 | } executed: }Execution Count:200004 | 200004 |
| 189 | | - |
| 190 | /*! | - |
| 191 | Returns the signal associated with this signal transition. | - |
| 192 | */ | - |
| 193 | QByteArray QSignalTransition::signal() const | - |
| 194 | { | - |
| 195 | Q_D(const QSignalTransition); executed (the execution status of this line is deduced): const QSignalTransitionPrivate * const d = d_func(); | - |
| 196 | return d->signal; executed: return d->signal;Execution Count:10 | 10 |
| 197 | } | - |
| 198 | | - |
| 199 | /*! | - |
| 200 | Sets the \a signal associated with this signal transition. | - |
| 201 | */ | - |
| 202 | void QSignalTransition::setSignal(const QByteArray &signal) | - |
| 203 | { | - |
| 204 | Q_D(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransitionPrivate * const d = d_func(); | - |
| 205 | if (signal == d->signal) partially evaluated: signal == d->signal| no Evaluation Count:0 | yes Evaluation Count:9 |
| 0-9 |
| 206 | return; | 0 |
| 207 | d->unregister(); executed (the execution status of this line is deduced): d->unregister(); | - |
| 208 | d->signal = signal; executed (the execution status of this line is deduced): d->signal = signal; | - |
| 209 | d->maybeRegister(); executed (the execution status of this line is deduced): d->maybeRegister(); | - |
| 210 | } executed: }Execution Count:9 | 9 |
| 211 | | - |
| 212 | /*! | - |
| 213 | \reimp | - |
| 214 | | - |
| 215 | The default implementation returns true if the \a event is a | - |
| 216 | QStateMachine::SignalEvent object and the event's sender and signal index | - |
| 217 | match this transition, and returns false otherwise. | - |
| 218 | */ | - |
| 219 | bool QSignalTransition::eventTest(QEvent *event) | - |
| 220 | { | - |
| 221 | Q_D(const QSignalTransition); executed (the execution status of this line is deduced): const QSignalTransitionPrivate * const d = d_func(); | - |
| 222 | if (event->type() == QEvent::StateMachineSignal) { evaluated: event->type() == QEvent::StateMachineSignal| yes Evaluation Count:73 | yes Evaluation Count:3166 |
| 73-3166 |
| 223 | if (d->signalIndex == -1) partially evaluated: d->signalIndex == -1| no Evaluation Count:0 | yes Evaluation Count:73 |
| 0-73 |
| 224 | return false; never executed: return false; | 0 |
| 225 | QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event); executed (the execution status of this line is deduced): QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event); | - |
| 226 | return (se->sender() == d->sender) executed: return (se->sender() == d->sender) && (se->signalIndex() == d->signalIndex);Execution Count:73 | 73 |
| 227 | && (se->signalIndex() == d->signalIndex); executed: return (se->sender() == d->sender) && (se->signalIndex() == d->signalIndex);Execution Count:73 | 73 |
| 228 | } | - |
| 229 | return false; executed: return false;Execution Count:3166 | 3166 |
| 230 | } | - |
| 231 | | - |
| 232 | /*! | - |
| 233 | \reimp | - |
| 234 | */ | - |
| 235 | void QSignalTransition::onTransition(QEvent *event) | - |
| 236 | { | - |
| 237 | Q_UNUSED(event); executed (the execution status of this line is deduced): (void)event;; | - |
| 238 | } executed: }Execution Count:61 | 61 |
| 239 | | - |
| 240 | /*! | - |
| 241 | \reimp | - |
| 242 | */ | - |
| 243 | bool QSignalTransition::event(QEvent *e) | - |
| 244 | { | - |
| 245 | return QAbstractTransition::event(e); executed: return QAbstractTransition::event(e);Execution Count:2 | 2 |
| 246 | } | - |
| 247 | | - |
| 248 | void QSignalTransitionPrivate::callOnTransition(QEvent *e) | - |
| 249 | { | - |
| 250 | Q_Q(QSignalTransition); executed (the execution status of this line is deduced): QSignalTransition * const q = q_func(); | - |
| 251 | | - |
| 252 | if (e->type() == QEvent::StateMachineSignal) { partially evaluated: e->type() == QEvent::StateMachineSignal| yes Evaluation Count:61 | no Evaluation Count:0 |
| 0-61 |
| 253 | QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent *>(e); executed (the execution status of this line is deduced): QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent *>(e); | - |
| 254 | int savedSignalIndex = se->m_signalIndex; executed (the execution status of this line is deduced): int savedSignalIndex = se->m_signalIndex; | - |
| 255 | se->m_signalIndex = originalSignalIndex; executed (the execution status of this line is deduced): se->m_signalIndex = originalSignalIndex; | - |
| 256 | q->onTransition(e); executed (the execution status of this line is deduced): q->onTransition(e); | - |
| 257 | se->m_signalIndex = savedSignalIndex; executed (the execution status of this line is deduced): se->m_signalIndex = savedSignalIndex; | - |
| 258 | } else { executed: }Execution Count:61 | 61 |
| 259 | q->onTransition(e); never executed (the execution status of this line is deduced): q->onTransition(e); | - |
| 260 | } | 0 |
| 261 | } | - |
| 262 | | - |
| 263 | QT_END_NAMESPACE | - |
| 264 | | - |
| 265 | #endif //QT_NO_STATEMACHINE | - |
| 266 | | - |
| | |