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>
31 #include <QMetaMethod>
32 #include <QMetaProperty>
36 #include "syncableobject.h"
39 class SignalRelay: public QObject {
41 /* Q_OBJECT is not necessary or even allowed, because we implement
42 qt_metacall ourselves (and don't use any other features of the meta
46 SignalRelay(SignalProxy* parent, QObject* source);
47 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
49 void attachSignal(int methodId, const QByteArray &func);
51 void setSynchronize(bool);
52 bool synchronize() const;
57 bool isSyncMethod(int i);
61 QMultiHash<int, QByteArray> sigNames;
65 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
71 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
74 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
75 _id = QObject::qt_metacall(_c, _id, _a);
78 if(_c == QMetaObject::InvokeMetaMethod) {
79 if(sigNames.contains(_id) || synchronize()) {
80 const QList<int> &argTypes = proxy->argTypes(caller, _id);
82 int n = argTypes.size();
83 for(int i=0; i<n; i++) {
84 if(argTypes[i] == 0) {
85 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());
86 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
89 params.append(QVariant(argTypes[i], _a[i+1]));
91 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
92 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
93 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
97 // dispatch Sync Signal if necessary
98 QByteArray signature(caller->metaObject()->method(_id).signature());
99 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
100 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
101 //qDebug() << "__SYNC__ >>>"
102 // << caller->metaObject()->className()
103 // << caller->objectName()
106 // params.prepend(QVariant(_id));
107 params.prepend(signature);
108 params.prepend(syncObject->objectName());
109 params.prepend(syncObject->syncMetaObject()->className());
110 proxy->dispatchSignal(SignalProxy::Sync, params);
113 _id -= QObject::staticMetaObject.methodCount();
118 void SignalRelay::setSynchronize(bool sync) {
119 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
123 const QMetaObject *meta = syncObject->syncMetaObject();
126 for(int i = 0; i < meta->methodCount(); i++ ) {
128 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
130 } else if (_sync && !sync) {
132 for(int i = 0; i < meta->methodCount(); i++ ) {
134 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
140 bool SignalRelay::isSyncMethod(int i) {
141 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
145 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
146 if(!proxy->syncMap(syncObject).contains(signature))
149 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
152 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
158 bool SignalRelay::synchronize() const {
162 int SignalRelay::sigCount() const {
163 // only for debuging purpose
164 return sigNames.count();
167 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
168 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
169 // all connected methodIds are offset by the standard methodCount of QObject
170 if(!sigNames.contains(methodId))
171 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
174 if(!func.isEmpty()) {
175 fn = QMetaObject::normalizedSignature(func);
177 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
179 sigNames.insert(methodId, fn);
181 // ====================
183 // ====================
186 // ====================
188 // ====================
189 SignalProxy::SignalProxy(QObject* parent)
192 setProxyMode(Client);
195 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
201 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
208 SignalProxy::~SignalProxy() {
209 QList<QObject*> senders = _relayHash.keys();
210 foreach(QObject* sender, senders)
211 detachObject(sender);
213 // close peer connections
214 foreach(QIODevice *device, _peers.keys()) {
220 void SignalProxy::setProxyMode(ProxyMode mode) {
221 foreach(QIODevice* peer, _peers.keys()) {
223 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
234 SignalProxy::ProxyMode SignalProxy::proxyMode() const {
238 void SignalProxy::initServer() {
239 disconnect(&_heartBeatTimer, 0, this, 0);
240 _heartBeatTimer.stop();
243 void SignalProxy::initClient() {
244 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
245 connect(&_heartBeatTimer, SIGNAL(timeout()),
246 this, SLOT(sendHeartBeat()));
247 _heartBeatTimer.start(60 * 1000); // msecs: one beep per minute
250 bool SignalProxy::addPeer(QIODevice* iodev) {
254 if(_peers.contains(iodev))
257 if(proxyMode() == Client && !_peers.isEmpty()) {
258 qWarning("SignalProxy: only one peer allowed in client mode!");
263 qWarning("SignalProxy::the device you passed is not open!");
265 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
266 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
268 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
270 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
273 _peers[iodev] = peerInfo();
274 if(iodev->property("UseCompression").toBool())
275 _peers[iodev].usesCompression = true;
277 if(_peers.count() == 1)
283 void SignalProxy::removePeer(QIODevice* iodev) {
284 if(_peers.isEmpty()) {
285 qWarning() << "SignalProxy::removePeer(): No peers in use!";
289 if(proxyMode() == Server && !iodev) {
291 QList<QIODevice *> peers = _peers.keys();
292 foreach(QIODevice *peer, peers)
296 if(proxyMode() != Server && !iodev)
297 iodev = _peers.keys().first();
301 if(!_peers.contains(iodev)) {
302 qWarning() << "SignalProxy: unknown QIODevice" << iodev;
306 _peers.remove(iodev);
308 disconnect(iodev, 0, this, 0);
309 emit peerRemoved(iodev);
315 void SignalProxy::removePeerBySender() {
316 // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
317 // this Slot is not triggered by destroyed, so the object is still alive and can be used!
318 QIODevice *ioDev = (QIODevice *)(sender());
322 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
323 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
324 const QMetaObject *meta = syncObject->metaObject();
325 const QByteArray className(meta->className());
326 objectRenamed(className, newname, oldname);
328 if(proxyMode() == Client)
332 params << "__objectRenamed__" << className << newname << oldname;
333 dispatchSignal(RpcCall, params);
336 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
337 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
338 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
343 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
344 const QMetaObject *meta = metaObject(obj);
345 QList<QByteArray> p = meta->method(methodId).parameterTypes();
348 for(int i=0; i<ct; i++)
349 argTypes.append(QMetaType::type(p.value(i)));
351 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
352 _classInfo[meta]->argTypes[methodId] = argTypes;
355 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
356 const QMetaObject *meta = metaObject(obj);
357 Q_ASSERT(_classInfo.contains(meta));
358 if(!_classInfo[meta]->argTypes.contains(methodId))
359 setArgTypes(obj, methodId);
360 return _classInfo[meta]->argTypes[methodId];
363 void SignalProxy::setReturnType(QObject *obj, int methodId) {
364 const QMetaObject *meta = metaObject(obj);
365 int returnType = QMetaType::type(meta->method(methodId).typeName());
367 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
368 _classInfo[meta]->returnType[methodId] = returnType;
371 const int &SignalProxy::returnType(QObject *obj, int methodId) {
372 const QMetaObject *meta = metaObject(obj);
373 Q_ASSERT(_classInfo.contains(meta));
374 if(!_classInfo[meta]->returnType.contains(methodId))
375 setReturnType(obj, methodId);
376 return _classInfo[meta]->returnType[methodId];
379 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
380 const QMetaObject *meta = metaObject(obj);
381 QString signature(meta->method(methodId).signature());
382 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
383 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
384 _classInfo[meta]->minArgCount[methodId] = minCount;
387 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
388 const QMetaObject *meta = metaObject(obj);
389 Q_ASSERT(_classInfo.contains(meta));
390 if(!_classInfo[meta]->minArgCount.contains(methodId))
391 setMinArgCount(obj, methodId);
392 return _classInfo[meta]->minArgCount[methodId];
395 void SignalProxy::setMethodName(QObject *obj, int methodId) {
396 const QMetaObject *meta = metaObject(obj);
397 QByteArray method(::methodName(meta->method(methodId)));
398 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
399 _classInfo[meta]->methodNames[methodId] = method;
402 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
403 const QMetaObject *meta = metaObject(obj);
404 Q_ASSERT(_classInfo.contains(meta));
405 if(!_classInfo[meta]->methodNames.contains(methodId))
406 setMethodName(obj, methodId);
407 return _classInfo[meta]->methodNames[methodId];
411 void SignalProxy::setSyncMap(SyncableObject *obj) {
412 const QMetaObject *meta = obj->syncMetaObject();
413 QHash<QByteArray, int> syncMap;
415 QList<int> slotIndexes;
416 for(int i = 0; i < meta->methodCount(); i++) {
417 if(meta->method(i).methodType() == QMetaMethod::Slot)
421 // we're faking sync pairs for sync replies
422 QByteArray slotSignature;
423 foreach(int slotIdx, slotIndexes) {
424 slotSignature = QByteArray(meta->method(slotIdx).signature());
425 if(!slotSignature.startsWith("receive"))
427 syncMap[slotSignature] = slotIdx;
430 QMetaMethod signal, slot;
432 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
433 signal = meta->method(signalIdx);
434 if(signal.methodType() != QMetaMethod::Signal)
438 foreach(int slotIdx, slotIndexes) {
439 slot = meta->method(slotIdx);
440 if(methodsMatch(signal, slot)) {
446 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
447 syncMap[QByteArray(signal.signature())] = matchIdx;
451 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
452 _classInfo[meta]->syncMap = syncMap;
455 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
456 const QMetaObject *meta = obj->syncMetaObject();
457 Q_ASSERT(_classInfo.contains(meta));
458 if(_classInfo[meta]->syncMap.isEmpty())
460 return _classInfo[meta]->syncMap;
463 void SignalProxy::setReceiveMap(SyncableObject *obj) {
464 const QMetaObject *meta = obj->syncMetaObject();
465 Q_ASSERT(_classInfo.contains(meta));
467 QHash<int, int> receiveMap;
469 QMetaMethod requestSlot;
470 QByteArray returnTypeName;
471 QByteArray signature;
472 QByteArray methodName;
476 const int methodCount = meta->methodCount();
477 for(int i = 0; i < methodCount; i++) {
478 requestSlot = meta->method(i);
479 if(requestSlot.methodType() != QMetaMethod::Slot)
482 returnTypeName = requestSlot.typeName();
483 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
486 signature = QByteArray(requestSlot.signature());
487 if(!signature.startsWith("request"))
490 paramsPos = signature.indexOf('(');
494 methodName = signature.left(paramsPos);
495 params = signature.mid(paramsPos);
497 methodName = methodName.replace("request", "receive");
498 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
500 signature = QMetaObject::normalizedSignature(methodName + params);
501 receiverId = meta->indexOfSlot(signature);
503 if(receiverId == -1) {
504 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
505 receiverId = meta->indexOfSlot(signature);
509 receiveMap[i] = receiverId;
511 _classInfo[meta]->receiveMap = receiveMap;
514 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
515 const QMetaObject *meta = obj->syncMetaObject();
516 Q_ASSERT(_classInfo.contains(meta));
517 if(_classInfo[meta]->receiveMap.isEmpty())
519 return _classInfo[meta]->receiveMap;
522 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
523 const QMetaObject *meta = obj->syncMetaObject();
524 Q_ASSERT(_classInfo.contains(meta));
525 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
528 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
529 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
530 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
533 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
534 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
535 return syncObject->syncMetaObject();
537 return obj->metaObject();
540 void SignalProxy::createClassInfo(QObject *obj) {
541 const QMetaObject *meta = metaObject(obj);
542 if(_classInfo.contains(meta))
545 ClassInfo *classInfo = new ClassInfo();
546 _classInfo[meta] = classInfo;
549 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
550 const QMetaObject* meta = metaObject(sender);
551 QByteArray sig(meta->normalizedSignature(signal).mid(1));
552 int methodId = meta->indexOfMethod(sig.constData());
553 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
554 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
558 createClassInfo(sender);
561 if(_relayHash.contains(sender))
562 relay = _relayHash[sender];
564 relay = _relayHash[sender] = new SignalRelay(this, sender);
566 relay->attachSignal(methodId, sigName);
572 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
573 const QMetaObject* meta = recv->metaObject();
574 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
575 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
576 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
580 createClassInfo(recv);
582 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
583 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
585 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
586 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
590 void SignalProxy::synchronize(SyncableObject *obj) {
591 createClassInfo(obj);
592 setUpdatedRemotelyId(obj);
594 // attaching all the Signals
596 if(_relayHash.contains(obj))
597 relay = _relayHash[obj];
599 relay = _relayHash[obj] = new SignalRelay(this, obj);
601 relay->setSynchronize(true);
603 // attaching as slave to receive sync Calls
604 QByteArray className(obj->syncMetaObject()->className());
605 _syncSlave[className][obj->objectName()] = obj;
607 if(proxyMode() == Server) {
608 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
615 void SignalProxy::setInitialized(SyncableObject *obj) {
616 obj->setInitialized();
617 emit objectInitialized(obj);
620 bool SignalProxy::isInitialized(SyncableObject *obj) const {
621 return obj->isInitialized();
624 void SignalProxy::requestInit(SyncableObject *obj) {
625 if(proxyMode() == Server || isInitialized(obj))
629 params << obj->syncMetaObject()->className()
630 << obj->objectName();
631 dispatchSignal(InitRequest, params);
634 void SignalProxy::detachSender() {
635 detachObject(sender());
638 void SignalProxy::detachObject(QObject* obj) {
641 stopSync(static_cast<SyncableObject *>(obj));
644 void SignalProxy::detachSignals(QObject* sender) {
645 if(!_relayHash.contains(sender))
647 _relayHash.take(sender)->deleteLater();
650 void SignalProxy::detachSlots(QObject* receiver) {
651 SlotHash::iterator slotIter = _attachedSlots.begin();
652 while(slotIter != _attachedSlots.end()) {
653 if(slotIter.value().first == receiver) {
654 slotIter = _attachedSlots.erase(slotIter);
660 void SignalProxy::stopSync(SyncableObject* obj) {
661 if(_relayHash.contains(obj))
662 _relayHash[obj]->setSynchronize(false);
664 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
665 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
666 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
667 while(classIter != _syncSlave.end()) {
668 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
669 classIter->remove(obj->objectName());
676 void SignalProxy::dispatchSignal(QIODevice *receiver, const RequestType &requestType, const QVariantList ¶ms) {
677 Q_ASSERT(_peers.contains(receiver));
678 QVariantList packedFunc;
679 packedFunc << (qint16)requestType;
680 packedFunc << params;
681 writeDataToDevice(receiver, QVariant(packedFunc), _peers[receiver].usesCompression);
684 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
685 // yes I know we have a little code duplication here... it's for the sake of performance
686 QVariantList packedFunc;
687 packedFunc << (qint16)requestType;
688 packedFunc << params;
689 foreach(QIODevice* dev, _peers.keys()) {
690 Q_ASSERT(_peers.contains(dev));
691 writeDataToDevice(dev, QVariant(packedFunc), _peers[dev].usesCompression);
695 void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
696 QVariantList params(packedFunc.toList());
698 if(params.isEmpty()) {
699 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
703 int callType = params.takeFirst().value<int>();
708 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
711 return handleSignal(params.takeFirst().toByteArray(), params);
714 return handleSync(sender, params);
716 return handleInitRequest(sender, params);
718 return handleInitData(sender, params);
722 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params;
727 void SignalProxy::handleSync(QIODevice *sender, QVariantList params) {
728 if(params.count() < 3) {
729 qWarning() << "received invalid Sync call" << params;
733 QByteArray className = params.takeFirst().toByteArray();
734 QString objectName = params.takeFirst().toString();
735 QByteArray signal = params.takeFirst().toByteArray();
737 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
738 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
743 SyncableObject *receiver = _syncSlave[className][objectName];
744 if(!syncMap(receiver).contains(signal)) {
745 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
750 int slotId = syncMap(receiver)[signal];
752 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
753 if(!invokeSlot(receiver, slotId, params, returnValue)) {
754 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
758 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
759 int receiverId = receiveMap(receiver)[slotId];
760 QVariantList returnParams;
761 returnParams << className
763 << QByteArray(receiver->metaObject()->method(receiverId).signature());
764 if(argTypes(receiver, receiverId).count() > 1)
765 returnParams << params;
766 returnParams << returnValue;
767 dispatchSignal(sender, Sync, returnParams);
770 // send emit update signal
771 invokeSlot(receiver, updatedRemotelyId(receiver));
774 void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) {
775 if(params.count() != 2) {
776 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
781 QByteArray className(params[0].toByteArray());
782 QString objectName(params[1].toString());
784 if(!_syncSlave.contains(className)) {
785 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
790 if(!_syncSlave[className].contains(objectName)) {
791 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
792 << className << objectName;
796 SyncableObject *obj = _syncSlave[className][objectName];
798 QVariantList params_;
803 dispatchSignal(sender, InitData, params_);
806 void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) {
808 if(params.count() != 3) {
809 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
814 QByteArray className(params[0].toByteArray());
815 QString objectName(params[1].toString());
816 QVariantMap propertyMap(params[2].toMap());
818 if(!_syncSlave.contains(className)) {
819 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
824 if(!_syncSlave[className].contains(objectName)) {
825 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
826 << className << objectName;
830 SyncableObject *obj = _syncSlave[className][objectName];
831 setInitData(obj, propertyMap);
834 void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
837 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
838 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
839 receiver = (*slot).first;
840 methodId = (*slot).second;
841 if(!invokeSlot(receiver, methodId, params))
842 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
847 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
848 const QList<int> args = argTypes(receiver, methodId);
849 const int numArgs = params.count() < args.count()
853 if(minArgCount(receiver, methodId) > params.count()) {
854 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
858 void *_a[] = {0, // return type...
859 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
862 // check for argument compatibility and build params array
863 for(int i = 0; i < numArgs; i++) {
864 if(!params[i].isValid()) {
865 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());
866 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
869 if(args[i] != QMetaType::type(params[i].typeName())) {
870 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
873 _a[i+1] = const_cast<void *>(params[i].constData());
876 if(returnValue.type() != QVariant::Invalid)
877 _a[0] = const_cast<void *>(returnValue.constData());
879 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
880 ? Qt::DirectConnection
881 : Qt::QueuedConnection;
883 if (type == Qt::DirectConnection) {
884 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
886 qWarning() << "Queued Connections are not implemented yet";
887 // note to self: qmetaobject.cpp:990 ff
893 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
895 return invokeSlot(receiver, methodId, params, ret);
898 void SignalProxy::dataAvailable() {
899 // yet again. it's a private slot. no need for checks.
900 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
901 Q_ASSERT(_peers.contains(ioDev));
903 while(readDataFromDevice(ioDev, _peers[ioDev].byteCount, var, _peers[ioDev].usesCompression))
904 receivePeerSignal(ioDev, var);
907 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
908 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
909 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
910 qWarning("SignalProxy: Can't call on a closed device");
915 QDataStream out(&block, QIODevice::WriteOnly);
916 out.setVersion(QDataStream::Qt_4_2);
920 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
922 itemStream.setVersion(QDataStream::Qt_4_2);
925 rawItem = qCompress(rawItem);
927 out << (quint32)rawItem.size() << rawItem;
929 out << (quint32)0 << item;
930 out.device()->seek(0);
931 out << (quint32)(block.size() - sizeof(quint32));
937 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
939 in.setVersion(QDataStream::Qt_4_2);
942 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
946 if(dev->bytesAvailable() < blockSize)
952 rawItem = qUncompress(rawItem);
954 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
955 itemStream.setVersion(QDataStream::Qt_4_2);
966 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
967 // if we don't even have the same basename it's a sure NO
968 if(methodBaseName(signal) != methodBaseName(slot))
971 // are the signatures compatible?
972 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
975 // we take an educated guess if the signals and slots match
976 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
977 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
979 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
980 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
984 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
985 QString methodname = QString(method.signature()).section("(", 0, 0);
987 // determine where we have to chop:
989 if(method.methodType() == QMetaMethod::Slot) {
990 // we take evertyhing from the first uppercase char if it's slot
991 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
992 if(upperCharPos == -1)
994 methodname = methodname.mid(upperCharPos);
996 // and if it's a signal we discard everything from the last uppercase char
997 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
998 if(upperCharPos == -1)
1000 methodname = methodname.left(upperCharPos);
1003 methodname[0] = methodname[0].toUpper();
1008 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1009 return obj->toVariantMap();
1012 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1013 if(isInitialized(obj))
1015 obj->fromVariantMap(properties);
1016 setInitialized(obj);
1017 invokeSlot(obj, updatedRemotelyId(obj));
1020 void SignalProxy::sendHeartBeat() {
1021 dispatchSignal(SignalProxy::HeartBeat, QVariantList());
1024 void SignalProxy::dumpProxyStats() {
1026 if(proxyMode() == Server)
1032 foreach(SignalRelay *relay, _relayHash.values())
1033 sigCount += relay->sigCount();
1036 foreach(ObjectId oid, _syncSlave.values())
1037 slaveCount += oid.count();
1040 qDebug() << " Proxy Mode:" << mode;
1041 qDebug() << "attached sending Objects:" << _relayHash.count();
1042 qDebug() << " number of Signals:" << sigCount;
1043 qDebug() << " attached Slots:" << _attachedSlots.count();
1044 qDebug() << " number of synced Slaves:" << slaveCount;
1045 qDebug() << "number of Classes cached:" << _classInfo.count();
1048 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1049 const QMetaObject *meta = object->metaObject();
1050 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1052 QHash<QByteArray, int> syncMap_ = syncMap(object);
1053 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1054 while(iter != syncMap_.constEnd()) {
1055 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1058 // QHash<int, int> syncMap_ = syncMap(object);
1059 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1060 // while(iter != syncMap_.constEnd()) {
1061 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();