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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 

    51 QT_BEGIN_HEADER

    52 

    53 QT_BEGIN_NAMESPACE

    54 

    55 QT_MODULE(Test)

    56 

    57 class QVariant;

    58 

    59 /* ### Qt5: change the class to use regular BC mechanisms, such that we can

    60  * implement things like suggested in task 160192. */

    61 class QSignalSpy: public QObject, public QList<QList<QVariant> >

    62 {

    63 public:

    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 

   115 private:

   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 

   144 QT_END_NAMESPACE

   145 

   146 QT_END_HEADER

   147 

   148 #endif