1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include "signalproxy.h"
25 #include <QAbstractSocket>
26 #include <QHostAddress>
32 #include <QMetaMethod>
33 #include <QMetaProperty>
37 #include "syncableobject.h"
40 class SignalRelay: public QObject {
42 /* Q_OBJECT is not necessary or even allowed, because we implement
43 qt_metacall ourselves (and don't use any other features of the meta
47 SignalRelay(SignalProxy* parent, QObject* source);
48 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
50 void attachSignal(int methodId, const QByteArray &func);
52 void setSynchronize(bool);
53 bool synchronize() const;
58 bool isSyncMethod(int i);
62 QMultiHash<int, QByteArray> sigNames;
66 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
72 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
75 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
76 _id = QObject::qt_metacall(_c, _id, _a);
79 if(_c == QMetaObject::InvokeMetaMethod) {
80 if(sigNames.contains(_id) || synchronize()) {
81 const QList<int> &argTypes = proxy->argTypes(caller, _id);
83 int n = argTypes.size();
84 for(int i=0; i<n; i++) {
85 if(argTypes[i] == 0) {
86 qWarning() << "SignalRelay::qt_metacall(): received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(caller->metaObject()->className()).arg(caller->metaObject()->method(_id).signature());
87 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
90 params.append(QVariant(argTypes[i], _a[i+1]));
92 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
93 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
94 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
98 // dispatch Sync Signal if necessary
99 QByteArray signature(caller->metaObject()->method(_id).signature());
100 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
101 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
102 //qDebug() << "__SYNC__ >>>"
103 // << caller->metaObject()->className()
104 // << caller->objectName()
107 // params.prepend(QVariant(_id));
108 params.prepend(signature);
109 params.prepend(syncObject->objectName());
110 params.prepend(syncObject->syncMetaObject()->className());
111 proxy->dispatchSignal(SignalProxy::Sync, params);
114 _id -= QObject::staticMetaObject.methodCount();
119 void SignalRelay::setSynchronize(bool sync) {
120 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
124 const QMetaObject *meta = syncObject->syncMetaObject();
127 for(int i = 0; i < meta->methodCount(); i++ ) {
129 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
131 } else if (_sync && !sync) {
133 for(int i = 0; i < meta->methodCount(); i++ ) {
135 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
141 bool SignalRelay::isSyncMethod(int i) {
142 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
146 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
147 if(!proxy->syncMap(syncObject).contains(signature))
150 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
153 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
159 bool SignalRelay::synchronize() const {
163 int SignalRelay::sigCount() const {
164 // only for debuging purpose
165 return sigNames.count();
168 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
169 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
170 // all connected methodIds are offset by the standard methodCount of QObject
171 if(!sigNames.contains(methodId))
172 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
175 if(!func.isEmpty()) {
176 fn = QMetaObject::normalizedSignature(func);
178 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
180 sigNames.insert(methodId, fn);
182 // ====================
184 // ====================
187 // ====================
189 // ====================
190 SignalProxy::SignalProxy(QObject* parent)
193 setProxyMode(Client);
196 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
202 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
209 SignalProxy::~SignalProxy() {
210 QList<QObject*> senders = _relayHash.keys();
211 foreach(QObject* sender, senders)
212 detachObject(sender);
214 // close peer connections
215 foreach(QIODevice *device, _peers.keys()) {
221 void SignalProxy::setProxyMode(ProxyMode mode) {
222 foreach(QIODevice* peer, _peers.keys()) {
224 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
235 SignalProxy::ProxyMode SignalProxy::proxyMode() const {
239 void SignalProxy::initServer() {
240 disconnect(&_heartBeatTimer, 0, this, 0);
241 _heartBeatTimer.stop();
244 void SignalProxy::initClient() {
245 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
246 connect(&_heartBeatTimer, SIGNAL(timeout()),
247 this, SLOT(sendHeartBeat()));
248 _heartBeatTimer.start(60 * 1000); // msecs: one beep per minute
251 bool SignalProxy::addPeer(QIODevice* iodev) {
255 if(_peers.contains(iodev))
258 if(proxyMode() == Client && !_peers.isEmpty()) {
259 qWarning("SignalProxy: only one peer allowed in client mode!");
264 qWarning("SignalProxy::the device you passed is not open!");
266 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
267 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
269 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
271 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
274 _peers[iodev] = peerInfo();
275 if(iodev->property("UseCompression").toBool())
276 _peers[iodev].usesCompression = true;
278 if(_peers.count() == 1)
284 void SignalProxy::removePeer(QIODevice* iodev) {
285 if(_peers.isEmpty()) {
286 qWarning() << "SignalProxy::removePeer(): No peers in use!";
290 if(proxyMode() == Server && !iodev) {
292 QList<QIODevice *> peers = _peers.keys();
293 foreach(QIODevice *peer, peers)
297 if(proxyMode() != Server && !iodev)
298 iodev = _peers.keys().first();
302 if(!_peers.contains(iodev)) {
303 qWarning() << "SignalProxy: unknown QIODevice" << iodev;
307 _peers.remove(iodev);
309 disconnect(iodev, 0, this, 0);
310 emit peerRemoved(iodev);
316 void SignalProxy::removePeerBySender() {
317 // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
318 // this Slot is not triggered by destroyed, so the object is still alive and can be used!
319 QIODevice *ioDev = (QIODevice *)(sender());
323 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
324 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
325 const QMetaObject *meta = syncObject->metaObject();
326 const QByteArray className(meta->className());
327 objectRenamed(className, newname, oldname);
329 if(proxyMode() == Client)
333 params << "__objectRenamed__" << className << newname << oldname;
334 dispatchSignal(RpcCall, params);
337 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
338 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
339 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
344 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
345 const QMetaObject *meta = metaObject(obj);
346 QList<QByteArray> p = meta->method(methodId).parameterTypes();
349 for(int i=0; i<ct; i++)
350 argTypes.append(QMetaType::type(p.value(i)));
352 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
353 _classInfo[meta]->argTypes[methodId] = argTypes;
356 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
357 const QMetaObject *meta = metaObject(obj);
358 Q_ASSERT(_classInfo.contains(meta));
359 if(!_classInfo[meta]->argTypes.contains(methodId))
360 setArgTypes(obj, methodId);
361 return _classInfo[meta]->argTypes[methodId];
364 void SignalProxy::setReturnType(QObject *obj, int methodId) {
365 const QMetaObject *meta = metaObject(obj);
366 int returnType = QMetaType::type(meta->method(methodId).typeName());
368 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
369 _classInfo[meta]->returnType[methodId] = returnType;
372 const int &SignalProxy::returnType(QObject *obj, int methodId) {
373 const QMetaObject *meta = metaObject(obj);
374 Q_ASSERT(_classInfo.contains(meta));
375 if(!_classInfo[meta]->returnType.contains(methodId))
376 setReturnType(obj, methodId);
377 return _classInfo[meta]->returnType[methodId];
380 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
381 const QMetaObject *meta = metaObject(obj);
382 QString signature(meta->method(methodId).signature());
383 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
384 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
385 _classInfo[meta]->minArgCount[methodId] = minCount;
388 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
389 const QMetaObject *meta = metaObject(obj);
390 Q_ASSERT(_classInfo.contains(meta));
391 if(!_classInfo[meta]->minArgCount.contains(methodId))
392 setMinArgCount(obj, methodId);
393 return _classInfo[meta]->minArgCount[methodId];
396 void SignalProxy::setMethodName(QObject *obj, int methodId) {
397 const QMetaObject *meta = metaObject(obj);
398 QByteArray method(::methodName(meta->method(methodId)));
399 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
400 _classInfo[meta]->methodNames[methodId] = method;
403 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
404 const QMetaObject *meta = metaObject(obj);
405 Q_ASSERT(_classInfo.contains(meta));
406 if(!_classInfo[meta]->methodNames.contains(methodId))
407 setMethodName(obj, methodId);
408 return _classInfo[meta]->methodNames[methodId];
412 void SignalProxy::setSyncMap(SyncableObject *obj) {
413 const QMetaObject *meta = obj->syncMetaObject();
414 QHash<QByteArray, int> syncMap;
416 QList<int> slotIndexes;
417 for(int i = 0; i < meta->methodCount(); i++) {
418 if(meta->method(i).methodType() == QMetaMethod::Slot)
422 // we're faking sync pairs for sync replies
423 QByteArray slotSignature;
424 foreach(int slotIdx, slotIndexes) {
425 slotSignature = QByteArray(meta->method(slotIdx).signature());
426 if(!slotSignature.startsWith("receive"))
428 syncMap[slotSignature] = slotIdx;
431 QMetaMethod signal, slot;
433 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
434 signal = meta->method(signalIdx);
435 if(signal.methodType() != QMetaMethod::Signal)
439 foreach(int slotIdx, slotIndexes) {
440 slot = meta->method(slotIdx);
441 if(methodsMatch(signal, slot)) {
447 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
448 syncMap[QByteArray(signal.signature())] = matchIdx;
452 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
453 _classInfo[meta]->syncMap = syncMap;
456 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
457 const QMetaObject *meta = obj->syncMetaObject();
458 Q_ASSERT(_classInfo.contains(meta));
459 if(_classInfo[meta]->syncMap.isEmpty())
461 return _classInfo[meta]->syncMap;
464 void SignalProxy::setReceiveMap(SyncableObject *obj) {
465 const QMetaObject *meta = obj->syncMetaObject();
466 Q_ASSERT(_classInfo.contains(meta));
468 QHash<int, int> receiveMap;
470 QMetaMethod requestSlot;
471 QByteArray returnTypeName;
472 QByteArray signature;
473 QByteArray methodName;
477 const int methodCount = meta->methodCount();
478 for(int i = 0; i < methodCount; i++) {
479 requestSlot = meta->method(i);
480 if(requestSlot.methodType() != QMetaMethod::Slot)
483 returnTypeName = requestSlot.typeName();
484 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
487 signature = QByteArray(requestSlot.signature());
488 if(!signature.startsWith("request"))
491 paramsPos = signature.indexOf('(');
495 methodName = signature.left(paramsPos);
496 params = signature.mid(paramsPos);
498 methodName = methodName.replace("request", "receive");
499 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
501 signature = QMetaObject::normalizedSignature(methodName + params);
502 receiverId = meta->indexOfSlot(signature);
504 if(receiverId == -1) {
505 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
506 receiverId = meta->indexOfSlot(signature);
510 receiveMap[i] = receiverId;
512 _classInfo[meta]->receiveMap = receiveMap;
515 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
516 const QMetaObject *meta = obj->syncMetaObject();
517 Q_ASSERT(_classInfo.contains(meta));
518 if(_classInfo[meta]->receiveMap.isEmpty())
520 return _classInfo[meta]->receiveMap;
523 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
524 const QMetaObject *meta = obj->syncMetaObject();
525 Q_ASSERT(_classInfo.contains(meta));
526 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
529 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
530 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
531 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
534 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
535 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
536 return syncObject->syncMetaObject();
538 return obj->metaObject();
541 void SignalProxy::createClassInfo(QObject *obj) {
542 const QMetaObject *meta = metaObject(obj);
543 if(_classInfo.contains(meta))
546 ClassInfo *classInfo = new ClassInfo();
547 _classInfo[meta] = classInfo;
550 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
551 const QMetaObject* meta = metaObject(sender);
552 QByteArray sig(meta->normalizedSignature(signal).mid(1));
553 int methodId = meta->indexOfMethod(sig.constData());
554 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
555 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
559 createClassInfo(sender);
562 if(_relayHash.contains(sender))
563 relay = _relayHash[sender];
565 relay = _relayHash[sender] = new SignalRelay(this, sender);
567 relay->attachSignal(methodId, sigName);
573 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
574 const QMetaObject* meta = recv->metaObject();
575 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
576 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
577 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
581 createClassInfo(recv);
583 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
584 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
586 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
587 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
591 void SignalProxy::synchronize(SyncableObject *obj) {
592 createClassInfo(obj);
593 setUpdatedRemotelyId(obj);
595 // attaching all the Signals
597 if(_relayHash.contains(obj))
598 relay = _relayHash[obj];
600 relay = _relayHash[obj] = new SignalRelay(this, obj);
602 relay->setSynchronize(true);
604 // attaching as slave to receive sync Calls
605 QByteArray className(obj->syncMetaObject()->className());
606 _syncSlave[className][obj->objectName()] = obj;
608 if(proxyMode() == Server) {
609 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
610 obj->setInitialized();
611 emit objectInitialized(obj);
613 if(obj->isInitialized())
614 emit objectInitialized(obj);
620 // void SignalProxy::setInitialized(SyncableObject *obj) {
621 // obj->setInitialized();
622 // emit objectInitialized(obj);
625 // bool SignalProxy::isInitialized(SyncableObject *obj) const {
626 // return obj->isInitialized();
629 void SignalProxy::requestInit(SyncableObject *obj) {
630 if(proxyMode() == Server || obj->isInitialized())
634 params << obj->syncMetaObject()->className()
635 << obj->objectName();
636 dispatchSignal(InitRequest, params);
639 void SignalProxy::detachSender() {
640 detachObject(sender());
643 void SignalProxy::detachObject(QObject* obj) {
646 stopSync(static_cast<SyncableObject *>(obj));
649 void SignalProxy::detachSignals(QObject* sender) {
650 if(!_relayHash.contains(sender))
652 _relayHash.take(sender)->deleteLater();
655 void SignalProxy::detachSlots(QObject* receiver) {
656 SlotHash::iterator slotIter = _attachedSlots.begin();
657 while(slotIter != _attachedSlots.end()) {
658 if(slotIter.value().first == receiver) {
659 slotIter = _attachedSlots.erase(slotIter);
665 void SignalProxy::stopSync(SyncableObject* obj) {
666 if(_relayHash.contains(obj))
667 _relayHash[obj]->setSynchronize(false);
669 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
670 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
671 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
672 while(classIter != _syncSlave.end()) {
673 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
674 classIter->remove(obj->objectName());
681 void SignalProxy::dispatchSignal(QIODevice *receiver, const RequestType &requestType, const QVariantList ¶ms) {
682 Q_ASSERT(_peers.contains(receiver));
683 QVariantList packedFunc;
684 packedFunc << (qint16)requestType;
685 packedFunc << params;
686 writeDataToDevice(receiver, QVariant(packedFunc), _peers[receiver].usesCompression);
689 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
690 // yes I know we have a little code duplication here... it's for the sake of performance
691 QVariantList packedFunc;
692 packedFunc << (qint16)requestType;
693 packedFunc << params;
694 foreach(QIODevice* dev, _peers.keys()) {
695 Q_ASSERT(_peers.contains(dev));
696 writeDataToDevice(dev, QVariant(packedFunc), _peers[dev].usesCompression);
700 void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
701 QVariantList params(packedFunc.toList());
703 if(params.isEmpty()) {
704 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
708 int callType = params.takeFirst().value<int>();
713 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
716 return handleSignal(params.takeFirst().toByteArray(), params);
719 return handleSync(sender, params);
721 return handleInitRequest(sender, params);
723 return handleInitData(sender, params);
727 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params;
732 void SignalProxy::handleSync(QIODevice *sender, QVariantList params) {
733 if(params.count() < 3) {
734 qWarning() << "received invalid Sync call" << params;
738 QByteArray className = params.takeFirst().toByteArray();
739 QString objectName = params.takeFirst().toString();
740 QByteArray signal = params.takeFirst().toByteArray();
742 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
743 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
748 SyncableObject *receiver = _syncSlave[className][objectName];
749 if(!syncMap(receiver).contains(signal)) {
750 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
755 int slotId = syncMap(receiver)[signal];
757 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
758 if(!invokeSlot(receiver, slotId, params, returnValue)) {
759 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
763 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
764 int receiverId = receiveMap(receiver)[slotId];
765 QVariantList returnParams;
766 returnParams << className
768 << QByteArray(receiver->metaObject()->method(receiverId).signature());
769 if(argTypes(receiver, receiverId).count() > 1)
770 returnParams << params;
771 returnParams << returnValue;
772 dispatchSignal(sender, Sync, returnParams);
775 // send emit update signal
776 invokeSlot(receiver, updatedRemotelyId(receiver));
779 void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) {
780 if(params.count() != 2) {
781 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
786 QByteArray className(params[0].toByteArray());
787 QString objectName(params[1].toString());
789 if(!_syncSlave.contains(className)) {
790 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
795 if(!_syncSlave[className].contains(objectName)) {
796 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
797 << className << objectName;
801 SyncableObject *obj = _syncSlave[className][objectName];
803 QVariantList params_;
808 dispatchSignal(sender, InitData, params_);
811 void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) {
813 if(params.count() != 3) {
814 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
819 QByteArray className(params[0].toByteArray());
820 QString objectName(params[1].toString());
821 QVariantMap propertyMap(params[2].toMap());
823 if(!_syncSlave.contains(className)) {
824 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
829 if(!_syncSlave[className].contains(objectName)) {
830 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
831 << className << objectName;
835 SyncableObject *obj = _syncSlave[className][objectName];
836 setInitData(obj, propertyMap);
839 void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
842 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
843 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
844 receiver = (*slot).first;
845 methodId = (*slot).second;
846 if(!invokeSlot(receiver, methodId, params))
847 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
852 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
853 const QList<int> args = argTypes(receiver, methodId);
854 const int numArgs = params.count() < args.count()
858 if(minArgCount(receiver, methodId) > params.count()) {
859 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
863 void *_a[] = {0, // return type...
864 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
867 // check for argument compatibility and build params array
868 for(int i = 0; i < numArgs; i++) {
869 if(!params[i].isValid()) {
870 qWarning() << "SignalProxy::invokeSlot(): received invalid data for argument number" << i << "of method" << QString("%1::%2()").arg(receiver->metaObject()->className()).arg(receiver->metaObject()->method(methodId).signature());
871 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
874 if(args[i] != QMetaType::type(params[i].typeName())) {
875 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
878 _a[i+1] = const_cast<void *>(params[i].constData());
881 if(returnValue.type() != QVariant::Invalid)
882 _a[0] = const_cast<void *>(returnValue.constData());
884 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
885 ? Qt::DirectConnection
886 : Qt::QueuedConnection;
888 if (type == Qt::DirectConnection) {
889 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
891 qWarning() << "Queued Connections are not implemented yet";
892 // note to self: qmetaobject.cpp:990 ff
898 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
900 return invokeSlot(receiver, methodId, params, ret);
903 void SignalProxy::dataAvailable() {
904 // yet again. it's a private slot. no need for checks.
905 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
906 Q_ASSERT(_peers.contains(ioDev));
908 while(readDataFromDevice(ioDev, _peers[ioDev].byteCount, var, _peers[ioDev].usesCompression))
909 receivePeerSignal(ioDev, var);
912 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
913 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
914 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
915 qWarning("SignalProxy: Can't call write on a closed device");
920 QDataStream out(&block, QIODevice::WriteOnly);
921 out.setVersion(QDataStream::Qt_4_2);
926 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
928 itemStream.setVersion(QDataStream::Qt_4_2);
931 rawItem = qCompress(rawItem);
938 out.device()->seek(0);
939 out << (quint32)(block.size() - sizeof(quint32));
944 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
946 in.setVersion(QDataStream::Qt_4_2);
949 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
953 if(blockSize > 1 << 22) {
954 qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
955 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
956 qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
961 if(dev->bytesAvailable() < blockSize)
967 rawItem = qUncompress(rawItem);
969 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
970 itemStream.setVersion(QDataStream::Qt_4_2);
981 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
982 // if we don't even have the same basename it's a sure NO
983 if(methodBaseName(signal) != methodBaseName(slot))
986 // are the signatures compatible?
987 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
990 // we take an educated guess if the signals and slots match
991 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
992 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
994 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
995 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
999 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1000 QString methodname = QString(method.signature()).section("(", 0, 0);
1002 // determine where we have to chop:
1004 if(method.methodType() == QMetaMethod::Slot) {
1005 // we take evertyhing from the first uppercase char if it's slot
1006 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1007 if(upperCharPos == -1)
1009 methodname = methodname.mid(upperCharPos);
1011 // and if it's a signal we discard everything from the last uppercase char
1012 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1013 if(upperCharPos == -1)
1015 methodname = methodname.left(upperCharPos);
1018 methodname[0] = methodname[0].toUpper();
1023 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1024 return obj->toVariantMap();
1027 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1028 if(obj->isInitialized())
1030 obj->fromVariantMap(properties);
1031 obj->setInitialized();
1032 emit objectInitialized(obj);
1033 invokeSlot(obj, updatedRemotelyId(obj));
1036 void SignalProxy::sendHeartBeat() {
1037 dispatchSignal(SignalProxy::HeartBeat, QVariantList());
1040 void SignalProxy::dumpProxyStats() {
1042 if(proxyMode() == Server)
1048 foreach(SignalRelay *relay, _relayHash.values())
1049 sigCount += relay->sigCount();
1052 foreach(ObjectId oid, _syncSlave.values())
1053 slaveCount += oid.count();
1056 qDebug() << " Proxy Mode:" << mode;
1057 qDebug() << "attached sending Objects:" << _relayHash.count();
1058 qDebug() << " number of Signals:" << sigCount;
1059 qDebug() << " attached Slots:" << _attachedSlots.count();
1060 qDebug() << " number of synced Slaves:" << slaveCount;
1061 qDebug() << "number of Classes cached:" << _classInfo.count();
1064 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1065 const QMetaObject *meta = object->metaObject();
1066 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1068 QHash<QByteArray, int> syncMap_ = syncMap(object);
1069 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1070 while(iter != syncMap_.constEnd()) {
1071 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1074 // QHash<int, int> syncMap_ = syncMap(object);
1075 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1076 // while(iter != syncMap_.constEnd()) {
1077 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();