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41
42#ifndef QSIGNALSPY_H
43#define QSIGNALSPY_H
44
45#include <QtCore/qbytearray.h>
46#include <QtCore/qlist.h>
47#include <QtCore/qobject.h>
48#include <QtCore/qmetaobject.h>
49#include <QtCore/qvariant.h>
50
51QT_BEGIN_HEADER
52
53QT_BEGIN_NAMESPACE
54
55QT_MODULE(Test)
56
57class QVariant;
58
59/* ### Qt5: change the class to use regular BC mechanisms, such that we can
60 * implement things like suggested in task 160192. */
61class QSignalSpy: public QObject, public QList<QList<QVariant> >
62{
63public:
64 QSignalSpy(QObject *obj, const char *aSignal)
65 {
66#ifdef Q_CC_BOR
67 const int memberOffset = QObject::staticMetaObject.methodCount();
68#else
69 static const int memberOffset = QObject::staticMetaObject.methodCount();
70#endif
71 Q_ASSERT(obj);
72 Q_ASSERT(aSignal);
73
74 if (((aSignal[0] - '0') & 0x03) != QSIGNAL_CODE) {
75 qWarning("QSignalSpy: Not a valid signal, use the SIGNAL macro");
76 return;
77 }
78
79 QByteArray ba = QMetaObject::normalizedSignature(aSignal + 1);
80 const QMetaObject *mo = obj->metaObject();
81 int sigIndex = mo->indexOfMethod(ba.constData());
82 if (sigIndex < 0) {
83 qWarning("QSignalSpy: No such signal: '%s'", ba.constData());
84 return;
85 }
86
87 if (!QMetaObject::connect(obj, sigIndex, this, memberOffset,
88 Qt::DirectConnection, 0)) {
89 qWarning("QSignalSpy: QMetaObject::connect returned false. Unable to connect.");
90 return;
91 }
92 sig = ba;
93 initArgs(mo->method(sigIndex));
94 }
95
96 inline bool isValid() const { return !sig.isEmpty(); }
97 inline QByteArray signal() const { return sig; }
98
99
100 int qt_metacall(QMetaObject::Call call, int methodId, void **a)
101 {
102 methodId = QObject::qt_metacall(call, methodId, a);
103 if (methodId < 0)
104 return methodId;
105
106 if (call == QMetaObject::InvokeMetaMethod) {
107 if (methodId == 0) {
108 appendArgs(a);
109 }
110 --methodId;
111 }
112 return methodId;
113 }
114
115private:
116 void initArgs(const QMetaMethod &member)
117 {
118 QList<QByteArray> params = member.parameterTypes();
119 for (int i = 0; i < params.count(); ++i) {
120 int tp = QMetaType::type(params.at(i).constData());
121 if (tp == QMetaType::Void)
122 qWarning("Don't know how to handle '%s', use qRegisterMetaType to register it.",
123 params.at(i).constData());
124 args << tp;
125 }
126 }
127
128 void appendArgs(void **a)
129 {
130 QList<QVariant> list;
131 for (int i = 0; i < args.count(); ++i) {
132 QMetaType::Type type = static_cast<QMetaType::Type>(args.at(i));
133 list << QVariant(type, a[i + 1]);
134 }
135 append(list);
136 }
137
138 // the full, normalized signal name
139 QByteArray sig;
140 // holds the QMetaType types for the argument list of the signal
141 QList<int> args;
142};
143
144QT_END_NAMESPACE
145
146QT_END_HEADER
147
148#endif
149

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