qsignaltransition.cpp

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1/****************************************************************************-
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32****************************************************************************/-
33-
34#include "qsignaltransition.h"-
35-
36#ifndef QT_NO_STATEMACHINE-
37-
38#include "qsignaltransition_p.h"-
39#include "qstate.h"-
40#include "qstate_p.h"-
41#include "qstatemachine.h"-
42#include "qstatemachine_p.h"-
43#include <qdebug.h>-
44-
45QT_BEGIN_NAMESPACE-
46-
47/*!-
48 \class QSignalTransition-
49 \inmodule QtCore-
50-
51 \brief The QSignalTransition class provides a transition based on a Qt signal.-
52-
53 \since 4.6-
54 \ingroup statemachine-
55-
56 Typically you would use the overload of QState::addTransition() that takes a-
57 sender and signal as arguments, rather than creating QSignalTransition-
58 objects directly. QSignalTransition is part of \l{The State Machine-
59 Framework}.-
60-
61 You can subclass QSignalTransition and reimplement eventTest() to make a-
62 signal transition conditional; the event object passed to eventTest() will-
63 be a QStateMachine::SignalEvent object. Example:-
64-
65 \code-
66 class CheckedTransition : public QSignalTransition-
67 {-
68 public:-
69 CheckedTransition(QCheckBox *check)-
70 : QSignalTransition(check, SIGNAL(stateChanged(int))) {}-
71 protected:-
72 bool eventTest(QEvent *e) {-
73 if (!QSignalTransition::eventTest(e))-
74 return false;-
75 QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(e);-
76 return (se->arguments().at(0).toInt() == Qt::Checked);-
77 }-
78 };-
79-
80 ...-
81-
82 QCheckBox *check = new QCheckBox();-
83 check->setTristate(true);-
84-
85 QState *s1 = new QState();-
86 QState *s2 = new QState();-
87 CheckedTransition *t1 = new CheckedTransition(check);-
88 t1->setTargetState(s2);-
89 s1->addTransition(t1);-
90 \endcode-
91*/-
92-
93/*!-
94 \property QSignalTransition::senderObject-
95-
96 \brief the sender object that this signal transition is associated with-
97*/-
98-
99/*!-
100 \property QSignalTransition::signal-
101-
102 \brief the signal that this signal transition is associated with-
103*/-
104-
105QSignalTransitionPrivate::QSignalTransitionPrivate()-
106{-
107 sender = 0;-
108 signalIndex = -1;-
109}
executed 74 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
74
110-
111void QSignalTransitionPrivate::unregister()-
112{-
113 Q_Q(QSignalTransition);-
114 if ((signalIndex == -1) || !machine())
(signalIndex == -1)Description
TRUEevaluated 100010 times by 1 test
Evaluated by:
  • tst_QStateMachine
FALSEevaluated 100003 times by 1 test
Evaluated by:
  • tst_QStateMachine
!machine()Description
TRUEnever evaluated
FALSEevaluated 100003 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-100010
115 return;
executed 100010 times by 1 test: return;
Executed by:
  • tst_QStateMachine
100010
116 QStateMachinePrivate::get(machine())->unregisterSignalTransition(q);-
117}
executed 100003 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
100003
118-
119void QSignalTransitionPrivate::maybeRegister()-
120{-
121 Q_Q(QSignalTransition);-
122 if (QStateMachine *mach = machine())
QStateMachine ...ch = machine()Description
TRUEevaluated 200010 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
FALSEevaluated 71 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
71-200010
123 QStateMachinePrivate::get(mach)->maybeRegisterSignalTransition(q);
executed 200010 times by 2 tests: QStateMachinePrivate::get(mach)->maybeRegisterSignalTransition(q);
Executed by:
  • tst_QState
  • tst_QStateMachine
200010
124}
executed 200081 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
200081
125-
126/*!-
127 Constructs a new signal transition with the given \a sourceState.-
128*/-
129QSignalTransition::QSignalTransition(QState *sourceState)-
130 : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)-
131{-
132}
executed 6 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
6
133-
134/*!-
135 Constructs a new signal transition associated with the given \a signal of-
136 the given \a sender, and with the given \a sourceState.-
137*/-
138QSignalTransition::QSignalTransition(const QObject *sender, const char *signal,-
139 QState *sourceState)-
140 : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)-
141{-
142 Q_D(QSignalTransition);-
143 d->sender = sender;-
144 d->signal = signal;-
145 d->maybeRegister();-
146}
executed 68 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
68
147-
148/*!-
149 Destroys this signal transition.-
150*/-
151QSignalTransition::~QSignalTransition()-
152{-
153}-
154-
155/*!-
156 Returns the sender object associated with this signal transition.-
157*/-
158QObject *QSignalTransition::senderObject() const-
159{-
160 Q_D(const QSignalTransition);-
161 return const_cast<QObject *>(d->sender);
executed 161 times by 2 tests: return const_cast<QObject *>(d->sender);
Executed by:
  • tst_QState
  • tst_QStateMachine
161
162}-
163-
164/*!-
165 Sets the \a sender object associated with this signal transition.-
166*/-
167void QSignalTransition::setSenderObject(const QObject *sender)-
168{-
169 Q_D(QSignalTransition);-
170 if (sender == d->sender)
sender == d->senderDescription
TRUEnever evaluated
FALSEevaluated 199230 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-199230
171 return;
never executed: return;
0
172 d->unregister();-
173 d->sender = sender;-
174 d->maybeRegister();-
175 emit senderObjectChanged(QPrivateSignal());-
176}
executed 200004 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
200004
177-
178/*!-
179 Returns the signal associated with this signal transition.-
180*/-
181QByteArray QSignalTransition::signal() const-
182{-
183 Q_D(const QSignalTransition);-
184 return d->signal;
executed 10 times by 1 test: return d->signal;
Executed by:
  • tst_QStateMachine
10
185}-
186-
187/*!-
188 Sets the \a signal associated with this signal transition.-
189*/-
190void QSignalTransition::setSignal(const QByteArray &signal)-
191{-
192 Q_D(QSignalTransition);-
193 if (signal == d->signal)
signal == d->signalDescription
TRUEnever evaluated
FALSEevaluated 9 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-9
194 return;
never executed: return;
0
195 d->unregister();-
196 d->signal = signal;-
197 d->maybeRegister();-
198 emit signalChanged(QPrivateSignal());-
199}
executed 9 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
9
200-
201/*!-
202 \reimp-
203-
204 The default implementation returns \c true if the \a event is a-
205 QStateMachine::SignalEvent object and the event's sender and signal index-
206 match this transition, and returns \c false otherwise.-
207*/-
208bool QSignalTransition::eventTest(QEvent *event)-
209{-
210 Q_D(const QSignalTransition);-
211 if (event->type() == QEvent::StateMachineSignal) {
event->type() ...eMachineSignalDescription
TRUEevaluated 89 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
FALSEevaluated 2203 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
89-2203
212 if (d->signalIndex == -1)
d->signalIndex == -1Description
TRUEnever evaluated
FALSEevaluated 89 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
0-89
213 return false;
never executed: return false;
0
214 QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event);-
215 return (se->sender() == d->sender)
executed 89 times by 2 tests: return (se->sender() == d->sender) && (se->signalIndex() == d->signalIndex);
Executed by:
  • tst_QState
  • tst_QStateMachine
(se->sender() == d->sender)Description
TRUEevaluated 80 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
FALSEevaluated 9 times by 1 test
Evaluated by:
  • tst_QStateMachine
9-89
216 && (se->signalIndex() == d->signalIndex);
executed 89 times by 2 tests: return (se->sender() == d->sender) && (se->signalIndex() == d->signalIndex);
Executed by:
  • tst_QState
  • tst_QStateMachine
(se->signalInd...->signalIndex)Description
TRUEevaluated 77 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QStateMachine
3-89
217 }-
218 return false;
executed 2203 times by 2 tests: return false;
Executed by:
  • tst_QState
  • tst_QStateMachine
2203
219}-
220-
221/*!-
222 \reimp-
223*/-
224void QSignalTransition::onTransition(QEvent *event)-
225{-
226 Q_UNUSED(event);-
227}
executed 71 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
71
228-
229/*!-
230 \reimp-
231*/-
232bool QSignalTransition::event(QEvent *e)-
233{-
234 return QAbstractTransition::event(e);
executed 2 times by 1 test: return QAbstractTransition::event(e);
Executed by:
  • tst_QStateMachine
2
235}-
236-
237/*!-
238 \fn QSignalTransition::senderObjectChanged()-
239 \since 5.4-
240-
241 This signal is emitted when the senderObject property is changed.-
242-
243 \sa QSignalTransition::senderObject-
244*/-
245-
246/*!-
247 \fn QSignalTransition::signalChanged()-
248 \since 5.4-
249-
250 This signal is emitted when the signal property is changed.-
251-
252 \sa QSignalTransition::signal-
253*/-
254-
255void QSignalTransitionPrivate::callOnTransition(QEvent *e)-
256{-
257 Q_Q(QSignalTransition);-
258-
259 if (e->type() == QEvent::StateMachineSignal) {
e->type() == Q...eMachineSignalDescription
TRUEevaluated 71 times by 2 tests
Evaluated by:
  • tst_QState
  • tst_QStateMachine
FALSEnever evaluated
0-71
260 QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent *>(e);-
261 int savedSignalIndex = se->m_signalIndex;-
262 se->m_signalIndex = originalSignalIndex;-
263 q->onTransition(e);-
264 se->m_signalIndex = savedSignalIndex;-
265 } else {
executed 71 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
71
266 q->onTransition(e);-
267 }
never executed: end of block
0
268}-
269-
270-
271QT_END_NAMESPACE-
272-
273#endif //QT_NO_STATEMACHINE-
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