qsignalspy.h
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtTest module of the Qt Toolkit.
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- ** accordance with the Qt Commercial License Agreement provided with the
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- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
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- #ifndef QSIGNALSPY_H
- #define QSIGNALSPY_H
- #include <QtCore/qbytearray.h>
- #include <QtCore/qlist.h>
- #include <QtCore/qobject.h>
- #include <QtCore/qmetaobject.h>
- #include <QtCore/qvariant.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Test)
- class QVariant;
- /* ### Qt5: change the class to use regular BC mechanisms, such that we can
- * implement things like suggested in task 160192. */
- class QSignalSpy: public QObject, public QList<QList<QVariant> >
- {
- public:
- QSignalSpy(QObject *obj, const char *aSignal)
- {
- #ifdef Q_CC_BOR
- const int memberOffset = QObject::staticMetaObject.methodCount();
- #else
- static const int memberOffset = QObject::staticMetaObject.methodCount();
- #endif
- Q_ASSERT(obj);
- Q_ASSERT(aSignal);
- if (aSignal[0] - '0' != QSIGNAL_CODE) {
- qWarning("QSignalSpy: Not a valid signal, use the SIGNAL macro");
- return;
- }
- QByteArray ba = QMetaObject::normalizedSignature(aSignal + 1);
- const QMetaObject *mo = obj->metaObject();
- int sigIndex = mo->indexOfMethod(ba.constData());
- if (sigIndex < 0) {
- qWarning("QSignalSpy: No such signal: '%s'", ba.constData());
- return;
- }
- if (!QMetaObject::connect(obj, sigIndex, this, memberOffset,
- Qt::DirectConnection, 0)) {
- qWarning("QSignalSpy: QMetaObject::connect returned false. Unable to connect.");
- return;
- }
- sig = ba;
- initArgs(mo->method(sigIndex));
- }
- inline bool isValid() const { return !sig.isEmpty(); }
- inline QByteArray signal() const { return sig; }
- int qt_metacall(QMetaObject::Call call, int id, void **a)
- {
- id = QObject::qt_metacall(call, id, a);
- if (id < 0)
- return id;
- if (call == QMetaObject::InvokeMetaMethod) {
- if (id == 0) {
- appendArgs(a);
- }
- --id;
- }
- return id;
- }
- private:
- void initArgs(const QMetaMethod &member)
- {
- QList<QByteArray> params = member.parameterTypes();
- for (int i = 0; i < params.count(); ++i) {
- int tp = QMetaType::type(params.at(i).constData());
- if (tp == QMetaType::Void)
- qWarning("Don't know how to handle '%s', use qRegisterMetaType to register it.",
- params.at(i).constData());
- args << tp;
- }
- }
- void appendArgs(void **a)
- {
- QList<QVariant> list;
- for (int i = 0; i < args.count(); ++i) {
- QMetaType::Type type = static_cast<QMetaType::Type>(args.at(i));
- list << QVariant(type, a[i + 1]);
- }
- append(list);
- }
- // the full, normalized signal name
- QByteArray sig;
- // holds the QMetaType types for the argument list of the signal
- QList<int> args;
- };
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif