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, _peerByteCount.keys()) {
221 void SignalProxy::setProxyMode(ProxyMode mode) {
222 foreach(QIODevice* peer, _peerByteCount.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(_peerByteCount.contains(iodev))
258 if(proxyMode() == Client && !_peerByteCount.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 _peerByteCount[iodev] = 0;
276 if(_peerByteCount.count() == 1)
282 void SignalProxy::removePeer(QIODevice* iodev) {
283 if(_peerByteCount.isEmpty()) {
284 qWarning() << "SignalProxy::removePeer(): No peers in use!";
288 if(proxyMode() == Server && !iodev) {
290 QList<QIODevice *> peers = _peerByteCount.keys();
291 foreach(QIODevice *peer, peers)
295 if(proxyMode() != Server && !iodev)
296 iodev = _peerByteCount.keys().first();
300 if(!_peerByteCount.contains(iodev)) {
301 qWarning() << "SignalProxy: unknown QIODevice" << iodev;
305 _peerByteCount.remove(iodev);
307 disconnect(iodev, 0, this, 0);
308 emit peerRemoved(iodev);
310 if(_peerByteCount.isEmpty())
314 void SignalProxy::removePeerBySender() {
315 // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
316 // this Slot is not triggered by destroyed, so the object is still alive and can be used!
317 QIODevice *ioDev = (QIODevice *)(sender());
321 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
322 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
323 const QMetaObject *meta = syncObject->metaObject();
324 const QByteArray className(meta->className());
325 objectRenamed(className, newname, oldname);
327 if(proxyMode() == Client)
331 params << "__objectRenamed__" << className << newname << oldname;
332 dispatchSignal(RpcCall, params);
335 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
336 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
337 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
342 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
343 const QMetaObject *meta = metaObject(obj);
344 QList<QByteArray> p = meta->method(methodId).parameterTypes();
347 for(int i=0; i<ct; i++)
348 argTypes.append(QMetaType::type(p.value(i)));
350 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
351 _classInfo[meta]->argTypes[methodId] = argTypes;
354 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
355 const QMetaObject *meta = metaObject(obj);
356 Q_ASSERT(_classInfo.contains(meta));
357 if(!_classInfo[meta]->argTypes.contains(methodId))
358 setArgTypes(obj, methodId);
359 return _classInfo[meta]->argTypes[methodId];
362 void SignalProxy::setReturnType(QObject *obj, int methodId) {
363 const QMetaObject *meta = metaObject(obj);
364 int returnType = QMetaType::type(meta->method(methodId).typeName());
366 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
367 _classInfo[meta]->returnType[methodId] = returnType;
370 const int &SignalProxy::returnType(QObject *obj, int methodId) {
371 const QMetaObject *meta = metaObject(obj);
372 Q_ASSERT(_classInfo.contains(meta));
373 if(!_classInfo[meta]->returnType.contains(methodId))
374 setReturnType(obj, methodId);
375 return _classInfo[meta]->returnType[methodId];
378 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
379 const QMetaObject *meta = metaObject(obj);
380 QString signature(meta->method(methodId).signature());
381 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
382 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
383 _classInfo[meta]->minArgCount[methodId] = minCount;
386 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
387 const QMetaObject *meta = metaObject(obj);
388 Q_ASSERT(_classInfo.contains(meta));
389 if(!_classInfo[meta]->minArgCount.contains(methodId))
390 setMinArgCount(obj, methodId);
391 return _classInfo[meta]->minArgCount[methodId];
394 void SignalProxy::setMethodName(QObject *obj, int methodId) {
395 const QMetaObject *meta = metaObject(obj);
396 QByteArray method(::methodName(meta->method(methodId)));
397 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
398 _classInfo[meta]->methodNames[methodId] = method;
401 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
402 const QMetaObject *meta = metaObject(obj);
403 Q_ASSERT(_classInfo.contains(meta));
404 if(!_classInfo[meta]->methodNames.contains(methodId))
405 setMethodName(obj, methodId);
406 return _classInfo[meta]->methodNames[methodId];
410 void SignalProxy::setSyncMap(SyncableObject *obj) {
411 const QMetaObject *meta = obj->syncMetaObject();
412 QHash<QByteArray, int> syncMap;
414 QList<int> slotIndexes;
415 for(int i = 0; i < meta->methodCount(); i++) {
416 if(meta->method(i).methodType() == QMetaMethod::Slot)
420 // we're faking sync pairs for sync replies
421 QByteArray slotSignature;
422 foreach(int slotIdx, slotIndexes) {
423 slotSignature = QByteArray(meta->method(slotIdx).signature());
424 if(!slotSignature.startsWith("receive"))
426 syncMap[slotSignature] = slotIdx;
429 QMetaMethod signal, slot;
431 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
432 signal = meta->method(signalIdx);
433 if(signal.methodType() != QMetaMethod::Signal)
437 foreach(int slotIdx, slotIndexes) {
438 slot = meta->method(slotIdx);
439 if(methodsMatch(signal, slot)) {
445 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
446 syncMap[QByteArray(signal.signature())] = matchIdx;
450 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
451 _classInfo[meta]->syncMap = syncMap;
454 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
455 const QMetaObject *meta = obj->syncMetaObject();
456 Q_ASSERT(_classInfo.contains(meta));
457 if(_classInfo[meta]->syncMap.isEmpty())
459 return _classInfo[meta]->syncMap;
462 void SignalProxy::setReceiveMap(SyncableObject *obj) {
463 const QMetaObject *meta = obj->syncMetaObject();
464 Q_ASSERT(_classInfo.contains(meta));
466 QHash<int, int> receiveMap;
468 QMetaMethod requestSlot;
469 QByteArray returnTypeName;
470 QByteArray signature;
471 QByteArray methodName;
475 const int methodCount = meta->methodCount();
476 for(int i = 0; i < methodCount; i++) {
477 requestSlot = meta->method(i);
478 if(requestSlot.methodType() != QMetaMethod::Slot)
481 returnTypeName = requestSlot.typeName();
482 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
485 signature = QByteArray(requestSlot.signature());
486 if(!signature.startsWith("request"))
489 paramsPos = signature.indexOf('(');
493 methodName = signature.left(paramsPos);
494 params = signature.mid(paramsPos);
496 methodName = methodName.replace("request", "receive");
497 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
499 signature = QMetaObject::normalizedSignature(methodName + params);
500 receiverId = meta->indexOfSlot(signature);
502 if(receiverId == -1) {
503 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
504 receiverId = meta->indexOfSlot(signature);
508 receiveMap[i] = receiverId;
510 _classInfo[meta]->receiveMap = receiveMap;
513 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
514 const QMetaObject *meta = obj->syncMetaObject();
515 Q_ASSERT(_classInfo.contains(meta));
516 if(_classInfo[meta]->receiveMap.isEmpty())
518 return _classInfo[meta]->receiveMap;
521 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
522 const QMetaObject *meta = obj->syncMetaObject();
523 Q_ASSERT(_classInfo.contains(meta));
524 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
527 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
528 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
529 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
532 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
533 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
534 return syncObject->syncMetaObject();
536 return obj->metaObject();
539 void SignalProxy::createClassInfo(QObject *obj) {
540 const QMetaObject *meta = metaObject(obj);
541 if(_classInfo.contains(meta))
544 ClassInfo *classInfo = new ClassInfo();
545 _classInfo[meta] = classInfo;
548 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
549 const QMetaObject* meta = metaObject(sender);
550 QByteArray sig(meta->normalizedSignature(signal).mid(1));
551 int methodId = meta->indexOfMethod(sig.constData());
552 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
553 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
557 createClassInfo(sender);
560 if(_relayHash.contains(sender))
561 relay = _relayHash[sender];
563 relay = _relayHash[sender] = new SignalRelay(this, sender);
565 relay->attachSignal(methodId, sigName);
571 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
572 const QMetaObject* meta = recv->metaObject();
573 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
574 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
575 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
579 createClassInfo(recv);
581 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
582 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
584 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
585 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
589 void SignalProxy::synchronize(SyncableObject *obj) {
590 createClassInfo(obj);
591 setUpdatedRemotelyId(obj);
593 // attaching all the Signals
595 if(_relayHash.contains(obj))
596 relay = _relayHash[obj];
598 relay = _relayHash[obj] = new SignalRelay(this, obj);
600 relay->setSynchronize(true);
602 // attaching as slave to receive sync Calls
603 QByteArray className(obj->syncMetaObject()->className());
604 _syncSlave[className][obj->objectName()] = obj;
606 if(proxyMode() == Server) {
607 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
614 void SignalProxy::setInitialized(SyncableObject *obj) {
615 obj->setInitialized();
616 emit objectInitialized(obj);
619 bool SignalProxy::isInitialized(SyncableObject *obj) const {
620 return obj->isInitialized();
623 void SignalProxy::requestInit(SyncableObject *obj) {
624 if(proxyMode() == Server || isInitialized(obj))
628 params << obj->syncMetaObject()->className()
629 << obj->objectName();
630 dispatchSignal(InitRequest, params);
633 void SignalProxy::detachSender() {
634 detachObject(sender());
637 void SignalProxy::detachObject(QObject* obj) {
640 stopSync(static_cast<SyncableObject *>(obj));
643 void SignalProxy::detachSignals(QObject* sender) {
644 if(!_relayHash.contains(sender))
646 _relayHash.take(sender)->deleteLater();
649 void SignalProxy::detachSlots(QObject* receiver) {
650 SlotHash::iterator slotIter = _attachedSlots.begin();
651 while(slotIter != _attachedSlots.end()) {
652 if(slotIter.value().first == receiver) {
653 slotIter = _attachedSlots.erase(slotIter);
659 void SignalProxy::stopSync(SyncableObject* obj) {
660 if(_relayHash.contains(obj))
661 _relayHash[obj]->setSynchronize(false);
663 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
664 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
665 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
666 while(classIter != _syncSlave.end()) {
667 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
668 classIter->remove(obj->objectName());
675 void SignalProxy::dispatchSignal(QIODevice *receiver, const RequestType &requestType, const QVariantList ¶ms) {
676 QVariantList packedFunc;
677 packedFunc << (qint16)requestType;
678 packedFunc << params;
679 writeDataToDevice(receiver, QVariant(packedFunc));
682 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
683 // yes I know we have a little code duplication here... it's for the sake of performance
684 QVariantList packedFunc;
685 packedFunc << (qint16)requestType;
686 packedFunc << params;
687 foreach(QIODevice* dev, _peerByteCount.keys())
688 writeDataToDevice(dev, QVariant(packedFunc));
691 void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
692 QVariantList params(packedFunc.toList());
694 if(params.isEmpty()) {
695 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
699 int callType = params.takeFirst().value<int>();
704 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
707 return handleSignal(params.takeFirst().toByteArray(), params);
710 return handleSync(sender, params);
712 return handleInitRequest(sender, params);
714 return handleInitData(sender, params);
718 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params;
723 void SignalProxy::handleSync(QIODevice *sender, QVariantList params) {
724 if(params.count() < 3) {
725 qWarning() << "received invalid Sync call" << params;
729 QByteArray className = params.takeFirst().toByteArray();
730 QString objectName = params.takeFirst().toString();
731 QByteArray signal = params.takeFirst().toByteArray();
733 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
734 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
739 SyncableObject *receiver = _syncSlave[className][objectName];
740 if(!syncMap(receiver).contains(signal)) {
741 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
746 int slotId = syncMap(receiver)[signal];
748 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
749 if(!invokeSlot(receiver, slotId, params, returnValue)) {
750 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
754 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
755 int receiverId = receiveMap(receiver)[slotId];
756 QVariantList returnParams;
757 returnParams << className
759 << QByteArray(receiver->metaObject()->method(receiverId).signature());
760 if(argTypes(receiver, receiverId).count() > 1)
761 returnParams << params;
762 returnParams << returnValue;
763 dispatchSignal(sender, Sync, returnParams);
766 // send emit update signal
767 invokeSlot(receiver, updatedRemotelyId(receiver));
770 void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) {
771 if(params.count() != 2) {
772 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
777 QByteArray className(params[0].toByteArray());
778 QString objectName(params[1].toString());
780 if(!_syncSlave.contains(className)) {
781 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
786 if(!_syncSlave[className].contains(objectName)) {
787 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
788 << className << objectName;
792 SyncableObject *obj = _syncSlave[className][objectName];
794 QVariantList params_;
799 dispatchSignal(sender, InitData, params_);
802 void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) {
804 if(params.count() != 3) {
805 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
810 QByteArray className(params[0].toByteArray());
811 QString objectName(params[1].toString());
812 QVariantMap propertyMap(params[2].toMap());
814 if(!_syncSlave.contains(className)) {
815 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
820 if(!_syncSlave[className].contains(objectName)) {
821 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
822 << className << objectName;
826 SyncableObject *obj = _syncSlave[className][objectName];
827 setInitData(obj, propertyMap);
830 void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
833 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
834 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
835 receiver = (*slot).first;
836 methodId = (*slot).second;
837 if(!invokeSlot(receiver, methodId, params))
838 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
843 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
844 const QList<int> args = argTypes(receiver, methodId);
845 const int numArgs = params.count() < args.count()
849 if(minArgCount(receiver, methodId) > params.count()) {
850 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
854 void *_a[] = {0, // return type...
855 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
858 // check for argument compatibility and build params array
859 for(int i = 0; i < numArgs; i++) {
860 if(!params[i].isValid()) {
861 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());
862 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
865 if(args[i] != QMetaType::type(params[i].typeName())) {
866 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
869 _a[i+1] = const_cast<void *>(params[i].constData());
872 if(returnValue.type() != QVariant::Invalid)
873 _a[0] = const_cast<void *>(returnValue.constData());
875 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
876 ? Qt::DirectConnection
877 : Qt::QueuedConnection;
879 if (type == Qt::DirectConnection) {
880 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
882 qWarning() << "Queued Connections are not implemented yet";
883 // note to self: qmetaobject.cpp:990 ff
889 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
891 return invokeSlot(receiver, methodId, params, ret);
894 void SignalProxy::dataAvailable() {
895 // yet again. it's a private slot. no need for checks.
896 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
898 while(readDataFromDevice(ioDev, _peerByteCount[ioDev], var))
899 receivePeerSignal(ioDev, var);
902 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item) {
903 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
904 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
905 qWarning("SignalProxy: Can't call write on a closed device");
909 QDataStream out(&block, QIODevice::WriteOnly);
910 out.setVersion(QDataStream::Qt_4_2);
911 out << (quint32)0 << item;
912 out.device()->seek(0);
913 out << (quint32)(block.size() - sizeof(quint32));
917 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item) {
919 in.setVersion(QDataStream::Qt_4_2);
922 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
926 if(blockSize > 1 << 22) {
927 qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
928 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
929 qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
934 if(dev->bytesAvailable() < blockSize)
941 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
942 // if we don't even have the same basename it's a sure NO
943 if(methodBaseName(signal) != methodBaseName(slot))
946 // are the signatures compatible?
947 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
950 // we take an educated guess if the signals and slots match
951 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
952 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
954 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
955 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
959 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
960 QString methodname = QString(method.signature()).section("(", 0, 0);
962 // determine where we have to chop:
964 if(method.methodType() == QMetaMethod::Slot) {
965 // we take evertyhing from the first uppercase char if it's slot
966 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
967 if(upperCharPos == -1)
969 methodname = methodname.mid(upperCharPos);
971 // and if it's a signal we discard everything from the last uppercase char
972 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
973 if(upperCharPos == -1)
975 methodname = methodname.left(upperCharPos);
978 methodname[0] = methodname[0].toUpper();
983 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
984 return obj->toVariantMap();
987 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
988 if(isInitialized(obj))
990 obj->fromVariantMap(properties);
992 invokeSlot(obj, updatedRemotelyId(obj));
995 void SignalProxy::sendHeartBeat() {
996 dispatchSignal(SignalProxy::HeartBeat, QVariantList());
999 void SignalProxy::dumpProxyStats() {
1001 if(proxyMode() == Server)
1007 foreach(SignalRelay *relay, _relayHash.values())
1008 sigCount += relay->sigCount();
1011 foreach(ObjectId oid, _syncSlave.values())
1012 slaveCount += oid.count();
1015 qDebug() << " Proxy Mode:" << mode;
1016 qDebug() << "attached sending Objects:" << _relayHash.count();
1017 qDebug() << " number of Signals:" << sigCount;
1018 qDebug() << " attached Slots:" << _attachedSlots.count();
1019 qDebug() << " number of synced Slaves:" << slaveCount;
1020 qDebug() << "number of Classes cached:" << _classInfo.count();
1023 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1024 const QMetaObject *meta = object->metaObject();
1025 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1027 QHash<QByteArray, int> syncMap_ = syncMap(object);
1028 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1029 while(iter != syncMap_.constEnd()) {
1030 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1033 // QHash<int, int> syncMap_ = syncMap(object);
1034 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1035 // while(iter != syncMap_.constEnd()) {
1036 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();