diff options
Diffstat (limited to 'src/corelib/kernel/qobject.cpp')
| -rw-r--r-- | src/corelib/kernel/qobject.cpp | 131 |
1 files changed, 96 insertions, 35 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp index 2b2a3c6676..e0dc5bcd9d 100644 --- a/src/corelib/kernel/qobject.cpp +++ b/src/corelib/kernel/qobject.cpp @@ -2385,8 +2385,6 @@ QMetaObject::Connection QObject::connect(const QObject *sender, const char *sign signal_index = QMetaObjectPrivate::originalClone(smeta, signal_index); int signalOffset, methodOffset; computeOffsets(smeta, &signalOffset, &methodOffset); - int signal_absolute_index = signal_index + methodOffset; - Q_UNUSED(signal_absolute_index) //only used in debug mode signal_index += signalOffset; QByteArray tmp_method_name; @@ -2455,12 +2453,12 @@ QMetaObject::Connection QObject::connect(const QObject *sender, const char *sign } #ifndef QT_NO_DEBUG - QMetaMethod smethod = smeta->method(signal_absolute_index); + QMetaMethod smethod = QMetaObjectPrivate::signal(smeta, signal_index); QMetaMethod rmethod = rmeta->method(method_index_relative + rmeta->methodOffset()); check_and_warn_compat(smeta, smethod, rmeta, rmethod); #endif QMetaObject::Connection handle = QMetaObject::Connection(QMetaObjectPrivate::connect( - sender, signal_index, receiver, method_index_relative, rmeta ,type, types)); + sender, signal_index, smeta, receiver, method_index_relative, rmeta ,type, types)); if (handle) const_cast<QObject*>(sender)->connectNotify(signal - 1); return handle; @@ -2548,7 +2546,7 @@ QMetaObject::Connection QObject::connect(const QObject *sender, const QMetaMetho check_and_warn_compat(smeta, signal, rmeta, method); #endif QMetaObject::Connection handle = QMetaObject::Connection(QMetaObjectPrivate::connect( - sender, signal_index, receiver, method_index, 0, type, types)); + sender, signal_index, signal.enclosingMetaObject(), receiver, method_index, 0, type, types)); if (handle) const_cast<QObject*>(sender)->connectNotify(signalSignature.constData()); return handle; @@ -2707,7 +2705,7 @@ bool QObject::disconnect(const QObject *sender, const char *signal, } if (!method) { - res |= QMetaObjectPrivate::disconnect(sender, signal_index, receiver, -1, 0); + res |= QMetaObjectPrivate::disconnect(sender, signal_index, smeta, receiver, -1, 0); } else { const QMetaObject *rmeta = receiver->metaObject(); do { @@ -2718,7 +2716,7 @@ bool QObject::disconnect(const QObject *sender, const char *signal, rmeta = rmeta->superClass(); if (method_index < 0) break; - res |= QMetaObjectPrivate::disconnect(sender, signal_index, receiver, method_index, 0); + res |= QMetaObjectPrivate::disconnect(sender, signal_index, smeta, receiver, method_index, 0); method_found = true; } while ((rmeta = rmeta->superClass())); } @@ -2731,8 +2729,11 @@ bool QObject::disconnect(const QObject *sender, const char *signal, err_method_notfound(receiver, method_arg, "disconnect"); err_info_about_objects("disconnect", sender, receiver); } - if (res) + if (res) { + if (!signal) + const_cast<QObject*>(sender)->disconnectNotify(QMetaMethod()); const_cast<QObject*>(sender)->disconnectNotify(signal ? (signal - 1) : 0); + } return res; } @@ -2817,9 +2818,16 @@ bool QObject::disconnect(const QObject *sender, const QMetaMethod &signal, return false; } - if (!QMetaObjectPrivate::disconnect(sender, signal_index, receiver, method_index, 0)) + if (!QMetaObjectPrivate::disconnect(sender, signal_index, signal.mobj, receiver, method_index, 0)) return false; + if (!signal.isValid()) { + // The signal is a wildcard, meaning all signals were disconnected. + // QMetaObjectPrivate::disconnect() doesn't call disconnectNotify() + // per connection in this case. Call it once now, with an invalid + // QMetaMethod as argument, as documented. + const_cast<QObject*>(sender)->disconnectNotify(signal); + } const_cast<QObject*>(sender)->disconnectNotify(method.mobj ? signalSignature.constData() : 0); return true; } @@ -2850,19 +2858,31 @@ bool QObject::disconnect(const QObject *sender, const QMetaMethod &signal, /*! \fn void QObject::connectNotify(const char *signal) + \obsolete +*/ +void QObject::connectNotify(const char *) +{ +} + +/*! + \fn void QObject::disconnectNotify(const char *signal) + \obsolete +*/ +void QObject::disconnectNotify(const char *) +{ +} + +/*! + \since 5.0 This virtual function is called when something has been connected to \a signal in this object. - If you want to compare \a signal with a specific signal, use - QLatin1String and the \c SIGNAL() macro as follows: + If you want to compare \a signal with a specific signal, you can + use QMetaMethod::fromSignal() as follows: \snippet code/src_corelib_kernel_qobject.cpp 32 - If the signal contains multiple parameters or parameters that - contain spaces, call QMetaObject::normalizedSignature() on - the result of the \c SIGNAL() macro. - \warning This function violates the object-oriented principle of modularity. However, it might be useful when you need to perform expensive initialization only if something is connected to a @@ -2871,12 +2891,13 @@ bool QObject::disconnect(const QObject *sender, const QMetaMethod &signal, \sa connect(), disconnectNotify() */ -void QObject::connectNotify(const char *) +void QObject::connectNotify(const QMetaMethod &signal) { + Q_UNUSED(signal); } /*! - \fn void QObject::disconnectNotify(const char *signal) + \since 5.0 This virtual function is called when something has been disconnected from \a signal in this object. @@ -2884,6 +2905,11 @@ void QObject::connectNotify(const char *) See connectNotify() for an example of how to compare \a signal with a specific signal. + If all signals were disconnected from this object (e.g., the + signal argument to disconnect() was 0), disconnectNotify() + is only called once, and the \a signal will be an invalid + QMetaMethod (QMetaMethod::isValid() returns false). + \warning This function violates the object-oriented principle of modularity. However, it might be useful for optimizing access to expensive resources. @@ -2891,17 +2917,19 @@ void QObject::connectNotify(const char *) \sa disconnect(), connectNotify() */ -void QObject::disconnectNotify(const char *) +void QObject::disconnectNotify(const QMetaMethod &signal) { + Q_UNUSED(signal); } /* \internal convert a signal index from the method range to the signal range */ -static int methodIndexToSignalIndex(const QMetaObject *metaObject, int signal_index) +static int methodIndexToSignalIndex(const QMetaObject **base, int signal_index) { if (signal_index < 0) return signal_index; + const QMetaObject *metaObject = *base; while (metaObject && metaObject->methodOffset() > signal_index) metaObject = metaObject->superClass(); @@ -2912,6 +2940,7 @@ static int methodIndexToSignalIndex(const QMetaObject *metaObject, int signal_in signal_index = QMetaObjectPrivate::originalClone(metaObject, signal_index - methodOffset) + signalOffset; else signal_index = signal_index - methodOffset + signalOffset; + *base = metaObject; } return signal_index; } @@ -2926,8 +2955,9 @@ static int methodIndexToSignalIndex(const QMetaObject *metaObject, int signal_in QMetaObject::Connection QMetaObject::connect(const QObject *sender, int signal_index, const QObject *receiver, int method_index, int type, int *types) { - signal_index = methodIndexToSignalIndex(sender->metaObject(), signal_index); - return Connection(QMetaObjectPrivate::connect(sender, signal_index, + const QMetaObject *smeta = sender->metaObject(); + signal_index = methodIndexToSignalIndex(&smeta, signal_index); + return Connection(QMetaObjectPrivate::connect(sender, signal_index, smeta, receiver, method_index, 0, //FIXME, we could speed this connection up by computing the relative index type, types)); @@ -2940,7 +2970,8 @@ QMetaObject::Connection QMetaObject::connect(const QObject *sender, int signal_i the QObjectPrivate::Connection* has a refcount of 2, so it must be passed to a QMetaObject::Connection */ -QObjectPrivate::Connection *QMetaObjectPrivate::connect(const QObject *sender, int signal_index, +QObjectPrivate::Connection *QMetaObjectPrivate::connect(const QObject *sender, + int signal_index, const QMetaObject *smeta, const QObject *receiver, int method_index, const QMetaObject *rmeta, int type, int *types) { @@ -2984,6 +3015,12 @@ QObjectPrivate::Connection *QMetaObjectPrivate::connect(const QObject *sender, i c->callFunction = callFunction; QObjectPrivate::get(s)->addConnection(signal_index, c.data()); + + locker.unlock(); + QMetaMethod smethod = QMetaObjectPrivate::signal(smeta, signal_index); + if (smethod.isValid()) + s->connectNotify(smethod); + return c.take(); } @@ -2992,8 +3029,9 @@ QObjectPrivate::Connection *QMetaObjectPrivate::connect(const QObject *sender, i bool QMetaObject::disconnect(const QObject *sender, int signal_index, const QObject *receiver, int method_index) { - signal_index = methodIndexToSignalIndex(sender->metaObject(), signal_index); - return QMetaObjectPrivate::disconnect(sender, signal_index, + const QMetaObject *smeta = sender->metaObject(); + signal_index = methodIndexToSignalIndex(&smeta, signal_index); + return QMetaObjectPrivate::disconnect(sender, signal_index, smeta, receiver, method_index, 0); } @@ -3006,8 +3044,9 @@ one of these connections will be removed. bool QMetaObject::disconnectOne(const QObject *sender, int signal_index, const QObject *receiver, int method_index) { - signal_index = methodIndexToSignalIndex(sender->metaObject(), signal_index); - return QMetaObjectPrivate::disconnect(sender, signal_index, + const QMetaObject *smeta = sender->metaObject(); + signal_index = methodIndexToSignalIndex(&smeta, signal_index); + return QMetaObjectPrivate::disconnect(sender, signal_index, smeta, receiver, method_index, 0, QMetaObjectPrivate::DisconnectOne); } @@ -3056,7 +3095,8 @@ bool QMetaObjectPrivate::disconnectHelper(QObjectPrivate::Connection *c, /*! \internal Same as the QMetaObject::disconnect, but \a signal_index must be the result of QObjectPrivate::signalIndex */ -bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index, +bool QMetaObjectPrivate::disconnect(const QObject *sender, + int signal_index, const QMetaObject *smeta, const QObject *receiver, int method_index, void **slot, DisconnectType disconnectType) { @@ -3079,9 +3119,9 @@ bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index, bool success = false; if (signal_index < 0) { // remove from all connection lists - for (signal_index = -1; signal_index < connectionLists->count(); ++signal_index) { + for (int sig_index = -1; sig_index < connectionLists->count(); ++sig_index) { QObjectPrivate::Connection *c = - (*connectionLists)[signal_index].first; + (*connectionLists)[sig_index].first; if (disconnectHelper(c, receiver, method_index, slot, senderMutex, disconnectType)) { success = true; connectionLists->dirty = true; @@ -3101,6 +3141,13 @@ bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index, if (connectionLists->orphaned && !connectionLists->inUse) delete connectionLists; + locker.unlock(); + if (success) { + QMetaMethod smethod = QMetaObjectPrivate::signal(smeta, signal_index); + if (smethod.isValid()) + s->disconnectNotify(smethod); + } + return success; } @@ -3140,7 +3187,8 @@ void QMetaObject::connectSlotsByName(QObject *o) int len = objName.length(); if (!len || qstrncmp(slot + 3, objName.data(), len) || slot[len+3] != '_') continue; - int sigIndex = co->d_func()->signalIndex(slot + len + 4); + const QMetaObject *smeta; + int sigIndex = co->d_func()->signalIndex(slot + len + 4, &smeta); if (sigIndex < 0) { // search for compatible signals const QMetaObject *smo = co->metaObject(); int slotlen = qstrlen(slot + len + 4) - 1; @@ -3150,8 +3198,9 @@ void QMetaObject::connectSlotsByName(QObject *o) continue; if (!qstrncmp(method.methodSignature().constData(), slot + len + 4, slotlen)) { + smeta = method.enclosingMetaObject(); int signalOffset, methodOffset; - computeOffsets(method.enclosingMetaObject(), &signalOffset, &methodOffset); + computeOffsets(smeta, &signalOffset, &methodOffset); sigIndex = k + - methodOffset + signalOffset; break; } @@ -3159,7 +3208,8 @@ void QMetaObject::connectSlotsByName(QObject *o) } if (sigIndex < 0) continue; - if (Connection(QMetaObjectPrivate::connect(co, sigIndex, o, i))) { + + if (Connection(QMetaObjectPrivate::connect(co, sigIndex, smeta, o, i))) { foundIt = true; break; } @@ -3390,8 +3440,11 @@ void QMetaObject::activate(QObject *sender, int signal_index, void **argv) It is different from QMetaObject::indexOfSignal(): indexOfSignal is the same as indexOfMethod while QObjectPrivate::signalIndex is smaller because it doesn't give index to slots. + + If \a meta is not 0, it is set to the meta-object where the signal was found. */ -int QObjectPrivate::signalIndex(const char *signalName) const +int QObjectPrivate::signalIndex(const char *signalName, + const QMetaObject **meta) const { Q_Q(const QObject); const QMetaObject *base = q->metaObject(); @@ -3405,6 +3458,8 @@ int QObjectPrivate::signalIndex(const char *signalName) const relative_index = QMetaObjectPrivate::originalClone(base, relative_index); int signalOffset, methodOffset; computeOffsets(base, &signalOffset, &methodOffset); + if (meta) + *meta = base; return relative_index + signalOffset; } @@ -4129,9 +4184,13 @@ QMetaObject::Connection QObject::connectImpl(const QObject *sender, void **signa QMetaObject::Connection ret(c.take()); locker.unlock(); + QMetaMethod method = QMetaObjectPrivate::signal(senderMetaObject, signal_index); + Q_ASSERT(method.isValid()); + s->connectNotify(method); + // reconstruct the signature to call connectNotify const char *sig; - QByteArray tmp_sig = senderMetaObject->method(signal_index - signalOffset + methodOffset).methodSignature(); + QByteArray tmp_sig = method.methodSignature(); sig = tmp_sig.constData(); QVarLengthArray<char> signalSignature(qstrlen(sig) + 2); signalSignature.data()[0] = char(QSIGNAL_CODE + '0'); @@ -4168,6 +4227,8 @@ bool QObject::disconnect(const QMetaObject::Connection &connection) if (c->next) c->next->prev = c->prev; c->receiver = 0; + // disconnectNotify() not called (the signal index is unknown). + return true; } @@ -4251,7 +4312,7 @@ bool QObject::disconnectImpl(const QObject *sender, void **signal, const QObject signal_index += signalOffset; } - return QMetaObjectPrivate::disconnect(sender, signal_index, receiver, -1, slot); + return QMetaObjectPrivate::disconnect(sender, signal_index, senderMetaObject, receiver, -1, slot); } /*! \class QMetaObject::Connection |