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Diffstat (limited to 'qt/src/qdbusabstractadaptor.cpp')
| -rw-r--r-- | qt/src/qdbusabstractadaptor.cpp | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/qt/src/qdbusabstractadaptor.cpp b/qt/src/qdbusabstractadaptor.cpp deleted file mode 100644 index 4592b29a..00000000 --- a/qt/src/qdbusabstractadaptor.cpp +++ /dev/null @@ -1,335 +0,0 @@ -/* -*- mode: C++ -*- - * - * Copyright (C) 2006 Trolltech AS. All rights reserved. - * Author: Thiago Macieira <thiago.macieira@trolltech.com> - * - * Licensed under the Academic Free License version 2.1 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - */ - -#include "qdbusabstractadaptor.h" - -#include <QtCore/qmetaobject.h> -#include <QtCore/qtimer.h> - -#include "qdbusconnection.h" - -#include "qdbusconnection_p.h" // for qDBusParametersForMethod -#include "qdbusabstractadaptor_p.h" - -struct QDBusAdaptorInit -{ - QSignalSpyCallbackSet callbacks; - QDBusAdaptorInit() - { - extern void qt_register_signal_spy_callbacks(const QSignalSpyCallbackSet &callback_set); - callbacks.signal_begin_callback = QDBusAdaptorConnector::signalBeginCallback; - callbacks.signal_end_callback = QDBusAdaptorConnector::signalEndCallback; - callbacks.slot_begin_callback = 0; - callbacks.slot_end_callback = 0; - qt_register_signal_spy_callbacks(callbacks); - - //QDBusAdaptorConnector::id = QObject::registerUserData(); - } -}; - -Q_GLOBAL_STATIC(QDBusAdaptorInit, qAdaptorInit) - -QDBusAdaptorConnector *qDBusFindAdaptorConnector(QObject *obj) -{ - (void)qAdaptorInit(); - - if (!obj) - return 0; - QDBusAdaptorConnector *connector = qFindChild<QDBusAdaptorConnector *>(obj); - if (connector) - connector->polish(); - return connector; -} - -QDBusAdaptorConnector *qDBusFindAdaptorConnector(QDBusAbstractAdaptor *adaptor) -{ - return qDBusFindAdaptorConnector(adaptor->parent()); -} - -QDBusAdaptorConnector *qDBusCreateAdaptorConnector(QObject *obj) -{ - (void)qAdaptorInit(); - - QDBusAdaptorConnector *connector = qDBusFindAdaptorConnector(obj); - if (connector) - return connector; - return new QDBusAdaptorConnector(obj); -} - -QString QDBusAbstractAdaptorPrivate::retrieveIntrospectionXml(QDBusAbstractAdaptor *adaptor) -{ - return adaptor->d->xml; -} - -void QDBusAbstractAdaptorPrivate::saveIntrospectionXml(QDBusAbstractAdaptor *adaptor, - const QString &xml) -{ - adaptor->d->xml = xml; -} - -/*! - \page usingannotations.html Using annotations in adaptors - - It is currently not possible to specify arbitrary annotations in adaptors. -*/ - -/*! - \class QDBusAbstractAdaptor - \brief Abstract adaptor for D-Bus adaptor classes. - - The QDBusAbstractAdaptor class is the starting point for all objects intending to provide - interfaces to the external world using D-Bus. This is accomplished by attaching a one or more - classes derived from QDBusAbstractAdaptor to a normal QObject and then registering that QObject - with QDBusConnection::registerObject. QDBusAbstractAdaptor objects are intended to be - light-weight wrappers, mostly just relaying calls into the real object (see object()) and the - signals from it. - - Each QDBusAbstractAdaptor-derived class should define the D-Bus interface it is implementing - using the Q_CLASSINFO macro in the class definition. - - QDBusAbstractAdaptor uses the standard QObject mechanism of signals, slots and properties to - determine what signals, methods and properties to export to the bus. Any signal emitted by - QDBusAbstractAdaptor-derived classes will be automatically be relayed through any D-Bus - connections the object is registered on. - - Classes derived from QDBusAbstractAdaptor must be created on the heap using the \a new operator - and must not be deleted by the user (they will be deleted automatically when the object they are - connected to is also deleted). - - \sa {usingadaptors.html}{Using adaptors}, QDBusConnection -*/ - -/*! - Constructs a QDBusAbstractAdaptor with \a obj as the parent object. -*/ -QDBusAbstractAdaptor::QDBusAbstractAdaptor(QObject* obj) - : QObject(obj), d(new QDBusAbstractAdaptorPrivate) -{ - QDBusAdaptorConnector *connector = qDBusCreateAdaptorConnector(obj); - - connector->waitingForPolish = true; - QTimer::singleShot(0, connector, SLOT(polish())); -} - -/*! - Destroys the adaptor. - - \warning Adaptors are destroyed automatically when the real object they refer to is - destroyed. Do not delete the adaptors yourself. -*/ -QDBusAbstractAdaptor::~QDBusAbstractAdaptor() -{ - delete d; -} - -/*! - Returns the QObject that we're the adaptor for. This is the same object that was passed as an - argument to the QDBusAbstractAdaptor constructor. -*/ -QObject* QDBusAbstractAdaptor::object() const -{ - return parent(); -} - -/*! - Toggles automatic signal relaying from the real object (see object()). - - Automatic signal relaying consists of signal-to-signal connection of the signals on the parent - that have the exact same method signatue in both classes. - - If \a enable is set to true, connect the signals; if set to false, disconnect all signals. -*/ -void QDBusAbstractAdaptor::setAutoRelaySignals(bool enable) -{ - const QMetaObject *us = metaObject(); - const QMetaObject *them = parent()->metaObject(); - for (int idx = staticMetaObject.methodCount(); idx < us->methodCount(); ++idx) { - QMetaMethod mm = us->method(idx); - - if (mm.methodType() != QMetaMethod::Signal) - continue; - - // try to connect/disconnect to a signal on the parent that has the same method signature - QByteArray sig = QMetaObject::normalizedSignature(mm.signature()); - if (them->indexOfSignal(sig) == -1) - continue; - sig.prepend(QSIGNAL_CODE + '0'); - parent()->disconnect(sig, this, sig); - if (enable) - connect(parent(), sig, sig); - } -} - -QDBusAdaptorConnector::QDBusAdaptorConnector(QObject *obj) - : QObject(obj), waitingForPolish(false), lastSignalIdx(0), argv(0) -{ -} - -QDBusAdaptorConnector::~QDBusAdaptorConnector() -{ -} - -void QDBusAdaptorConnector::addAdaptor(QDBusAbstractAdaptor *adaptor) -{ - // find the interface name - const QMetaObject *mo = adaptor->metaObject(); - while (mo != &QDBusAbstractAdaptor::staticMetaObject) { - int ciend = mo->classInfoCount(); - for (int i = mo->classInfoOffset(); i < ciend; ++i) { - QMetaClassInfo mci = mo->classInfo(i); - if (strcmp(mci.name(), QCLASSINFO_DBUS_INTERFACE) == 0 && *mci.value()) { - // find out if this interface exists first - QString interface = QString::fromUtf8(mci.value()); - AdaptorMap::Iterator it = qLowerBound(adaptors.begin(), adaptors.end(), interface); - if (it != adaptors.end() && it->interface == interface) { - // exists. Replace it (though it's probably the same) - it->adaptor = adaptor; - it->metaObject = mo; - } else { - // create a new one - AdaptorData entry; - entry.interface = interface; - entry.adaptor = adaptor; - entry.metaObject = mo; - adaptors << entry; - } - } - } - - mo = mo->superClass(); - } - - // connect the adaptor's signals to our relaySlot slot - mo = adaptor->metaObject(); - for (int i = QDBusAbstractAdaptor::staticMetaObject.methodCount(); - i < mo->methodCount(); ++i) { - QMetaMethod mm = mo->method(i); - - if (mm.methodType() != QMetaMethod::Signal) - continue; - - QByteArray sig = mm.signature(); - sig.prepend(QSIGNAL_CODE + '0'); - disconnect(adaptor, sig, this, SLOT(relaySlot())); - connect(adaptor, sig, this, SLOT(relaySlot())); - } -} - -void QDBusAdaptorConnector::polish() -{ - if (!waitingForPolish) - return; // avoid working multiple times if multiple adaptors were added - - waitingForPolish = false; - const QObjectList &objs = parent()->children(); - foreach (QObject *obj, objs) { - QDBusAbstractAdaptor *adaptor = qobject_cast<QDBusAbstractAdaptor *>(obj); - if (adaptor) - addAdaptor(adaptor); - } - - // sort the adaptor list - qSort(adaptors); -} - -void QDBusAdaptorConnector::relaySlot() -{ - relay(sender()); -} - -void QDBusAdaptorConnector::relay(QObject *senderObj) -{ - // we're being called because there is a signal being emitted that we must relay - Q_ASSERT(lastSignalIdx); - Q_ASSERT(argv); - Q_ASSERT(senderMetaObject); - - if (senderMetaObject != senderObj->metaObject()) { - qWarning("Inconsistency detected: QDBusAdaptorConnector::relay got called with unexpected sender object!"); - } else { - QMetaMethod mm = senderMetaObject->method(lastSignalIdx); - QObject *object = static_cast<QDBusAbstractAdaptor *>(senderObj)->parent(); - - // break down the parameter list - QList<int> types; - int inputCount = qDBusParametersForMethod(mm, types); - if (inputCount == -1) - // invalid signal signature - // qDBusParametersForMethod has already complained - return; - if (inputCount + 1 != types.count() || - types.at(inputCount) == QDBusConnectionPrivate::messageMetaType) { - // invalid signal signature - // qDBusParametersForMethod has not yet complained about this one - qWarning("Cannot relay signal %s::%s", senderMetaObject->className(), mm.signature()); - return; - } - - QByteArray signature = QMetaObject::normalizedSignature(mm.signature()); - signature.truncate(signature.indexOf('(')); // remove parameter decoration - - QVariantList args; - for (int i = 1; i < types.count(); ++i) - args << QVariant(types.at(i), argv[i]); - - // find all the interfaces this signal belongs to - for (const QMetaObject *mo = senderMetaObject; mo != &QDBusAbstractAdaptor::staticMetaObject; - mo = mo->superClass()) { - if (lastSignalIdx < mo->methodOffset()) - break; - - for (int i = mo->classInfoOffset(); i < mo->classInfoCount(); ++i) { - QMetaClassInfo mci = mo->classInfo(i); - if (qstrcmp(mci.name(), QCLASSINFO_DBUS_INTERFACE) == 0 && *mci.value()) - // now emit the signal with all the information - emit relaySignal(object, mci.value(), signature.constData(), args); - } - } - } -} - -void QDBusAdaptorConnector::signalBeginCallback(QObject *caller, int method_index, void **argv) -{ - QDBusAbstractAdaptor *adaptor = qobject_cast<QDBusAbstractAdaptor *>(caller); - if (adaptor) { - QDBusAdaptorConnector *data = qDBusFindAdaptorConnector(adaptor); - data->lastSignalIdx = method_index; - data->argv = argv; - data->senderMetaObject = caller->metaObject(); - data->polish(); // make sure it's polished - } -} - -void QDBusAdaptorConnector::signalEndCallback(QObject *caller, int) -{ - QDBusAbstractAdaptor *adaptor = qobject_cast<QDBusAbstractAdaptor *>(caller); - if (adaptor) { - QDBusAdaptorConnector *data = qDBusFindAdaptorConnector(adaptor); - data->lastSignalIdx = 0; - data->argv = 0; - data->senderMetaObject = 0; - } -} - -#include "qdbusabstractadaptor.moc" -#include "qdbusabstractadaptor_p.moc" |