Implement client UI integration, add feature flag (0x400)
[quassel.git] / src / client / client.cpp
1 /***************************************************************************
2  *   Copyright (C) 2005-2016 by the Quassel Project                        *
3  *   devel@quassel-irc.org                                                 *
4  *                                                                         *
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.                                           *
9  *                                                                         *
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.                          *
14  *                                                                         *
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  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
19  ***************************************************************************/
20
21 #include "client.h"
22
23 #include "abstractmessageprocessor.h"
24 #include "abstractui.h"
25 #include "bufferinfo.h"
26 #include "buffermodel.h"
27 #include "buffersettings.h"
28 #include "buffersyncer.h"
29 #include "bufferviewconfig.h"
30 #include "bufferviewoverlay.h"
31 #include "clientaliasmanager.h"
32 #include "clientbacklogmanager.h"
33 #include "clientbufferviewmanager.h"
34 #include "clientirclisthelper.h"
35 #include "clientidentity.h"
36 #include "clientignorelistmanager.h"
37 #include "clienttransfermanager.h"
38 #include "clientuserinputhandler.h"
39 #include "coreaccountmodel.h"
40 #include "coreconnection.h"
41 #include "dccconfig.h"
42 #include "ircchannel.h"
43 #include "ircuser.h"
44 #include "message.h"
45 #include "messagemodel.h"
46 #include "network.h"
47 #include "networkconfig.h"
48 #include "networkmodel.h"
49 #include "quassel.h"
50 #include "signalproxy.h"
51 #include "transfermodel.h"
52 #include "util.h"
53 #include "clientauthhandler.h"
54
55 #include <stdio.h>
56 #include <stdlib.h>
57
58 QPointer<Client> Client::instanceptr = 0;
59 Quassel::Features Client::_coreFeatures = 0;
60
61 /*** Initialization/destruction ***/
62
63 bool Client::instanceExists()
64 {
65     return instanceptr;
66 }
67
68
69 Client *Client::instance()
70 {
71     if (!instanceptr)
72         instanceptr = new Client();
73     return instanceptr;
74 }
75
76
77 void Client::destroy()
78 {
79     if (instanceptr) {
80         delete instanceptr->mainUi();
81         instanceptr->deleteLater();
82         instanceptr = 0;
83     }
84 }
85
86
87 void Client::init(AbstractUi *ui)
88 {
89     instance()->_mainUi = ui;
90     instance()->init();
91 }
92
93
94 Client::Client(QObject *parent)
95     : QObject(parent),
96     _signalProxy(new SignalProxy(SignalProxy::Client, this)),
97     _mainUi(0),
98     _networkModel(0),
99     _bufferModel(0),
100     _bufferSyncer(0),
101     _aliasManager(0),
102     _backlogManager(new ClientBacklogManager(this)),
103     _bufferViewManager(0),
104     _bufferViewOverlay(new BufferViewOverlay(this)),
105     _dccConfig(0),
106     _ircListHelper(new ClientIrcListHelper(this)),
107     _inputHandler(0),
108     _networkConfig(0),
109     _ignoreListManager(0),
110     _transferManager(0),
111     _transferModel(new TransferModel(this)),
112     _messageModel(0),
113     _messageProcessor(0),
114     _coreAccountModel(new CoreAccountModel(this)),
115     _coreConnection(new CoreConnection(this)),
116     _connected(false),
117     _debugLog(&_debugLogBuffer)
118 {
119     _signalProxy->synchronize(_ircListHelper);
120 }
121
122
123 Client::~Client()
124 {
125     disconnectFromCore();
126 }
127
128
129 void Client::init()
130 {
131     _networkModel = new NetworkModel(this);
132
133     connect(this, SIGNAL(networkRemoved(NetworkId)),
134         _networkModel, SLOT(networkRemoved(NetworkId)));
135
136     _bufferModel = new BufferModel(_networkModel);
137     _messageModel = mainUi()->createMessageModel(this);
138     _messageProcessor = mainUi()->createMessageProcessor(this);
139     _inputHandler = new ClientUserInputHandler(this);
140
141     SignalProxy *p = signalProxy();
142
143     p->attachSlot(SIGNAL(displayMsg(const Message &)), this, SLOT(recvMessage(const Message &)));
144     p->attachSlot(SIGNAL(displayStatusMsg(QString, QString)), this, SLOT(recvStatusMsg(QString, QString)));
145
146     p->attachSlot(SIGNAL(bufferInfoUpdated(BufferInfo)), _networkModel, SLOT(bufferUpdated(BufferInfo)));
147     p->attachSignal(inputHandler(), SIGNAL(sendInput(BufferInfo, QString)));
148     p->attachSignal(this, SIGNAL(requestNetworkStates()));
149
150     p->attachSignal(this, SIGNAL(requestCreateIdentity(const Identity &, const QVariantMap &)), SIGNAL(createIdentity(const Identity &, const QVariantMap &)));
151     p->attachSignal(this, SIGNAL(requestRemoveIdentity(IdentityId)), SIGNAL(removeIdentity(IdentityId)));
152     p->attachSlot(SIGNAL(identityCreated(const Identity &)), this, SLOT(coreIdentityCreated(const Identity &)));
153     p->attachSlot(SIGNAL(identityRemoved(IdentityId)), this, SLOT(coreIdentityRemoved(IdentityId)));
154
155     p->attachSignal(this, SIGNAL(requestCreateNetwork(const NetworkInfo &, const QStringList &)), SIGNAL(createNetwork(const NetworkInfo &, const QStringList &)));
156     p->attachSignal(this, SIGNAL(requestRemoveNetwork(NetworkId)), SIGNAL(removeNetwork(NetworkId)));
157     p->attachSlot(SIGNAL(networkCreated(NetworkId)), this, SLOT(coreNetworkCreated(NetworkId)));
158     p->attachSlot(SIGNAL(networkRemoved(NetworkId)), this, SLOT(coreNetworkRemoved(NetworkId)));
159
160     p->attachSignal(this, SIGNAL(requestPasswordChange(PeerPtr,QString,QString,QString)), SIGNAL(changePassword(PeerPtr,QString,QString,QString)));
161     p->attachSlot(SIGNAL(passwordChanged(PeerPtr,bool)), this, SLOT(corePasswordChanged(PeerPtr,bool)));
162
163     //connect(mainUi(), SIGNAL(connectToCore(const QVariantMap &)), this, SLOT(connectToCore(const QVariantMap &)));
164     connect(mainUi(), SIGNAL(disconnectFromCore()), this, SLOT(disconnectFromCore()));
165     connect(this, SIGNAL(connected()), mainUi(), SLOT(connectedToCore()));
166     connect(this, SIGNAL(disconnected()), mainUi(), SLOT(disconnectedFromCore()));
167
168     // attach backlog manager
169     p->synchronize(backlogManager());
170     connect(backlogManager(), SIGNAL(messagesReceived(BufferId, int)), _messageModel, SLOT(messagesReceived(BufferId, int)));
171
172     coreAccountModel()->load();
173
174     connect(coreConnection(), SIGNAL(stateChanged(CoreConnection::ConnectionState)), SLOT(connectionStateChanged(CoreConnection::ConnectionState)));
175     coreConnection()->init();
176 }
177
178
179 /*** public static methods ***/
180
181 AbstractUi *Client::mainUi()
182 {
183     return instance()->_mainUi;
184 }
185
186
187 void Client::setCoreFeatures(Quassel::Features features)
188 {
189     _coreFeatures = features;
190 }
191
192
193 bool Client::isConnected()
194 {
195     return instance()->_connected;
196 }
197
198
199 bool Client::internalCore()
200 {
201     return currentCoreAccount().isInternal();
202 }
203
204
205 /*** Network handling ***/
206
207 QList<NetworkId> Client::networkIds()
208 {
209     return instance()->_networks.keys();
210 }
211
212
213 const Network *Client::network(NetworkId networkid)
214 {
215     if (instance()->_networks.contains(networkid)) return instance()->_networks[networkid];
216     else return 0;
217 }
218
219
220 void Client::createNetwork(const NetworkInfo &info, const QStringList &persistentChannels)
221 {
222     emit instance()->requestCreateNetwork(info, persistentChannels);
223 }
224
225
226 void Client::removeNetwork(NetworkId id)
227 {
228     emit instance()->requestRemoveNetwork(id);
229 }
230
231
232 void Client::updateNetwork(const NetworkInfo &info)
233 {
234     Network *netptr = instance()->_networks.value(info.networkId, 0);
235     if (!netptr) {
236         qWarning() << "Update for unknown network requested:" << info;
237         return;
238     }
239     netptr->requestSetNetworkInfo(info);
240 }
241
242
243 void Client::addNetwork(Network *net)
244 {
245     net->setProxy(signalProxy());
246     signalProxy()->synchronize(net);
247     networkModel()->attachNetwork(net);
248     connect(net, SIGNAL(destroyed()), instance(), SLOT(networkDestroyed()));
249     instance()->_networks[net->networkId()] = net;
250     emit instance()->networkCreated(net->networkId());
251 }
252
253
254 void Client::coreNetworkCreated(NetworkId id)
255 {
256     if (_networks.contains(id)) {
257         qWarning() << "Creation of already existing network requested!";
258         return;
259     }
260     Network *net = new Network(id, this);
261     addNetwork(net);
262 }
263
264
265 void Client::coreNetworkRemoved(NetworkId id)
266 {
267     if (!_networks.contains(id))
268         return;
269     Network *net = _networks.take(id);
270     emit networkRemoved(net->networkId());
271     net->deleteLater();
272 }
273
274
275 /*** Identity handling ***/
276
277 QList<IdentityId> Client::identityIds()
278 {
279     return instance()->_identities.keys();
280 }
281
282
283 const Identity *Client::identity(IdentityId id)
284 {
285     if (instance()->_identities.contains(id)) return instance()->_identities[id];
286     else return 0;
287 }
288
289
290 void Client::createIdentity(const CertIdentity &id)
291 {
292     QVariantMap additional;
293 #ifdef HAVE_SSL
294     additional["KeyPem"] = id.sslKey().toPem();
295     additional["CertPem"] = id.sslCert().toPem();
296 #endif
297     emit instance()->requestCreateIdentity(id, additional);
298 }
299
300
301 void Client::updateIdentity(IdentityId id, const QVariantMap &ser)
302 {
303     Identity *idptr = instance()->_identities.value(id, 0);
304     if (!idptr) {
305         qWarning() << "Update for unknown identity requested:" << id;
306         return;
307     }
308     idptr->requestUpdate(ser);
309 }
310
311
312 void Client::removeIdentity(IdentityId id)
313 {
314     emit instance()->requestRemoveIdentity(id);
315 }
316
317
318 void Client::coreIdentityCreated(const Identity &other)
319 {
320     if (!_identities.contains(other.id())) {
321         Identity *identity = new Identity(other, this);
322         _identities[other.id()] = identity;
323         identity->setInitialized();
324         signalProxy()->synchronize(identity);
325         emit identityCreated(other.id());
326     }
327     else {
328         qWarning() << tr("Identity already exists in client!");
329     }
330 }
331
332
333 void Client::coreIdentityRemoved(IdentityId id)
334 {
335     if (_identities.contains(id)) {
336         emit identityRemoved(id);
337         Identity *i = _identities.take(id);
338         i->deleteLater();
339     }
340 }
341
342
343 /*** User input handling ***/
344
345 void Client::userInput(const BufferInfo &bufferInfo, const QString &message)
346 {
347     // we need to make sure that AliasManager is ready before processing input
348     if (aliasManager() && aliasManager()->isInitialized())
349         inputHandler()->handleUserInput(bufferInfo, message);
350     else
351         instance()->_userInputBuffer.append(qMakePair(bufferInfo, message));
352 }
353
354
355 void Client::sendBufferedUserInput()
356 {
357     for (int i = 0; i < _userInputBuffer.count(); i++)
358         userInput(_userInputBuffer.at(i).first, _userInputBuffer.at(i).second);
359
360     _userInputBuffer.clear();
361 }
362
363
364 /*** core connection stuff ***/
365
366 void Client::connectionStateChanged(CoreConnection::ConnectionState state)
367 {
368     switch (state) {
369     case CoreConnection::Disconnected:
370         setDisconnectedFromCore();
371         break;
372     case CoreConnection::Synchronized:
373         setSyncedToCore();
374         break;
375     default:
376         break;
377     }
378 }
379
380
381 void Client::setSyncedToCore()
382 {
383     // create buffersyncer
384     Q_ASSERT(!_bufferSyncer);
385     _bufferSyncer = new BufferSyncer(this);
386     connect(bufferSyncer(), SIGNAL(lastSeenMsgSet(BufferId, MsgId)), _networkModel, SLOT(setLastSeenMsgId(BufferId, MsgId)));
387     connect(bufferSyncer(), SIGNAL(markerLineSet(BufferId, MsgId)), _networkModel, SLOT(setMarkerLineMsgId(BufferId, MsgId)));
388     connect(bufferSyncer(), SIGNAL(bufferRemoved(BufferId)), this, SLOT(bufferRemoved(BufferId)));
389     connect(bufferSyncer(), SIGNAL(bufferRenamed(BufferId, QString)), this, SLOT(bufferRenamed(BufferId, QString)));
390     connect(bufferSyncer(), SIGNAL(buffersPermanentlyMerged(BufferId, BufferId)), this, SLOT(buffersPermanentlyMerged(BufferId, BufferId)));
391     connect(bufferSyncer(), SIGNAL(buffersPermanentlyMerged(BufferId, BufferId)), _messageModel, SLOT(buffersPermanentlyMerged(BufferId, BufferId)));
392     connect(bufferSyncer(), SIGNAL(bufferMarkedAsRead(BufferId)), SIGNAL(bufferMarkedAsRead(BufferId)));
393     connect(bufferSyncer(), SIGNAL(bufferActivityChange(BufferId, const Message::Types)), _networkModel, SLOT(bufferActivityChanged(BufferId, const Message::Types)));
394     connect(networkModel(), SIGNAL(requestSetLastSeenMsg(BufferId, MsgId)), bufferSyncer(), SLOT(requestSetLastSeenMsg(BufferId, const MsgId &)));
395
396     SignalProxy *p = signalProxy();
397     p->synchronize(bufferSyncer());
398
399     // create a new BufferViewManager
400     Q_ASSERT(!_bufferViewManager);
401     _bufferViewManager = new ClientBufferViewManager(p, this);
402     connect(_bufferViewManager, SIGNAL(initDone()), _bufferViewOverlay, SLOT(restore()));
403
404     // create AliasManager
405     Q_ASSERT(!_aliasManager);
406     _aliasManager = new ClientAliasManager(this);
407     connect(aliasManager(), SIGNAL(initDone()), SLOT(sendBufferedUserInput()));
408     p->synchronize(aliasManager());
409
410     // create NetworkConfig
411     Q_ASSERT(!_networkConfig);
412     _networkConfig = new NetworkConfig("GlobalNetworkConfig", this);
413     p->synchronize(networkConfig());
414
415     // create IgnoreListManager
416     Q_ASSERT(!_ignoreListManager);
417     _ignoreListManager = new ClientIgnoreListManager(this);
418     p->synchronize(ignoreListManager());
419
420     // create TransferManager and DccConfig if core supports them
421     Q_ASSERT(!_dccConfig);
422     Q_ASSERT(!_transferManager);
423     if (coreFeatures() & Quassel::DccFileTransfer) {
424         _dccConfig = new DccConfig(this);
425         p->synchronize(dccConfig());
426         _transferManager = new ClientTransferManager(this);
427         _transferModel->setManager(_transferManager);
428         p->synchronize(transferManager());
429     }
430
431     // trigger backlog request once all active bufferviews are initialized
432     connect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(finishConnectionInitialization()));
433
434     _connected = true;
435     emit connected();
436     emit coreConnectionStateChanged(true);
437 }
438
439 void Client::finishConnectionInitialization()
440 {
441     // usually it _should_ take longer until the bufferViews are initialized, so that's what
442     // triggers this slot. But we have to make sure that we know all buffers yet.
443     // so we check the BufferSyncer and in case it wasn't initialized we wait for that instead
444     if (!bufferSyncer()->isInitialized()) {
445         disconnect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(finishConnectionInitialization()));
446         connect(bufferSyncer(), SIGNAL(initDone()), this, SLOT(finishConnectionInitialization()));
447         return;
448     }
449     disconnect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(finishConnectionInitialization()));
450     disconnect(bufferSyncer(), SIGNAL(initDone()), this, SLOT(finishConnectionInitialization()));
451
452     requestInitialBacklog();
453     bufferSyncer()->markActivitiesChanged();
454 }
455
456
457 void Client::requestInitialBacklog()
458 {
459     _backlogManager->requestInitialBacklog();
460 }
461
462
463 void Client::disconnectFromCore()
464 {
465     if (!coreConnection()->isConnected())
466         return;
467
468     coreConnection()->disconnectFromCore();
469 }
470
471
472 void Client::setDisconnectedFromCore()
473 {
474     _connected = false;
475     _coreFeatures = 0;
476
477     emit disconnected();
478     emit coreConnectionStateChanged(false);
479
480     backlogManager()->reset();
481     messageProcessor()->reset();
482
483     // Clear internal data. Hopefully nothing relies on it at this point.
484
485     if (_bufferSyncer) {
486         _bufferSyncer->deleteLater();
487         _bufferSyncer = 0;
488     }
489
490     if (_bufferViewManager) {
491         _bufferViewManager->deleteLater();
492         _bufferViewManager = 0;
493     }
494
495     _bufferViewOverlay->reset();
496
497     if (_aliasManager) {
498         _aliasManager->deleteLater();
499         _aliasManager = 0;
500     }
501
502     if (_ignoreListManager) {
503         _ignoreListManager->deleteLater();
504         _ignoreListManager = 0;
505     }
506
507     if (_transferManager) {
508         _transferModel->setManager(nullptr);
509         _transferManager->deleteLater();
510         _transferManager = nullptr;
511     }
512
513     if (_dccConfig) {
514         _dccConfig->deleteLater();
515         _dccConfig = nullptr;
516     }
517
518     // we probably don't want to save pending input for reconnect
519     _userInputBuffer.clear();
520
521     _messageModel->clear();
522     _networkModel->clear();
523
524     QHash<NetworkId, Network *>::iterator netIter = _networks.begin();
525     while (netIter != _networks.end()) {
526         Network *net = netIter.value();
527         emit networkRemoved(net->networkId());
528         disconnect(net, SIGNAL(destroyed()), this, 0);
529         netIter = _networks.erase(netIter);
530         net->deleteLater();
531     }
532     Q_ASSERT(_networks.isEmpty());
533
534     QHash<IdentityId, Identity *>::iterator idIter = _identities.begin();
535     while (idIter != _identities.end()) {
536         emit identityRemoved(idIter.key());
537         Identity *id = idIter.value();
538         idIter = _identities.erase(idIter);
539         id->deleteLater();
540     }
541     Q_ASSERT(_identities.isEmpty());
542
543     if (_networkConfig) {
544         _networkConfig->deleteLater();
545         _networkConfig = 0;
546     }
547 }
548
549
550 /*** ***/
551
552 void Client::networkDestroyed()
553 {
554     Network *net = static_cast<Network *>(sender());
555     QHash<NetworkId, Network *>::iterator netIter = _networks.begin();
556     while (netIter != _networks.end()) {
557         if (*netIter == net) {
558             netIter = _networks.erase(netIter);
559             break;
560         }
561         else {
562             ++netIter;
563         }
564     }
565 }
566
567
568 // Hmm... we never used this...
569 void Client::recvStatusMsg(QString /*net*/, QString /*msg*/)
570 {
571     //recvMessage(net, Message::server("", QString("[STATUS] %1").arg(msg)));
572 }
573
574
575 void Client::recvMessage(const Message &msg)
576 {
577     Message msg_ = msg;
578     messageProcessor()->process(msg_);
579 }
580
581
582 void Client::setBufferLastSeenMsg(BufferId id, const MsgId &msgId)
583 {
584     if (bufferSyncer())
585         bufferSyncer()->requestSetLastSeenMsg(id, msgId);
586 }
587
588
589 void Client::setMarkerLine(BufferId id, const MsgId &msgId)
590 {
591     if (bufferSyncer())
592         bufferSyncer()->requestSetMarkerLine(id, msgId);
593 }
594
595
596 MsgId Client::markerLine(BufferId id)
597 {
598     if (id.isValid() && networkModel())
599         return networkModel()->markerLineMsgId(id);
600     return MsgId();
601 }
602
603
604 void Client::removeBuffer(BufferId id)
605 {
606     if (!bufferSyncer()) return;
607     bufferSyncer()->requestRemoveBuffer(id);
608 }
609
610
611 void Client::renameBuffer(BufferId bufferId, const QString &newName)
612 {
613     if (!bufferSyncer())
614         return;
615     bufferSyncer()->requestRenameBuffer(bufferId, newName);
616 }
617
618
619 void Client::mergeBuffersPermanently(BufferId bufferId1, BufferId bufferId2)
620 {
621     if (!bufferSyncer())
622         return;
623     bufferSyncer()->requestMergeBuffersPermanently(bufferId1, bufferId2);
624 }
625
626
627 void Client::purgeKnownBufferIds()
628 {
629     if (!bufferSyncer())
630         return;
631     bufferSyncer()->requestPurgeBufferIds();
632 }
633
634
635 void Client::bufferRemoved(BufferId bufferId)
636 {
637     // select a sane buffer (status buffer)
638     /* we have to manually select a buffer because otherwise inconsitent changes
639      * to the model might occur:
640      * the result of a buffer removal triggers a change in the selection model.
641      * the newly selected buffer might be a channel that hasn't been selected yet
642      * and a new nickview would be created (which never heard of the "rowsAboutToBeRemoved").
643      * this new view (and/or) its sort filter will then only receive a "rowsRemoved" signal.
644      */
645     QModelIndex current = bufferModel()->currentIndex();
646     if (current.data(NetworkModel::BufferIdRole).value<BufferId>() == bufferId) {
647         bufferModel()->setCurrentIndex(current.sibling(0, 0));
648     }
649
650     // and remove it from the model
651     networkModel()->removeBuffer(bufferId);
652 }
653
654
655 void Client::bufferRenamed(BufferId bufferId, const QString &newName)
656 {
657     QModelIndex bufferIndex = networkModel()->bufferIndex(bufferId);
658     if (bufferIndex.isValid()) {
659         networkModel()->setData(bufferIndex, newName, Qt::DisplayRole);
660     }
661 }
662
663
664 void Client::buffersPermanentlyMerged(BufferId bufferId1, BufferId bufferId2)
665 {
666     QModelIndex idx = networkModel()->bufferIndex(bufferId1);
667     bufferModel()->setCurrentIndex(bufferModel()->mapFromSource(idx));
668     networkModel()->removeBuffer(bufferId2);
669 }
670
671
672 void Client::markBufferAsRead(BufferId id)
673 {
674     if (bufferSyncer() && id.isValid())
675         bufferSyncer()->requestMarkBufferAsRead(id);
676 }
677
678
679 void Client::changePassword(const QString &oldPassword, const QString &newPassword) {
680     CoreAccount account = currentCoreAccount();
681     account.setPassword(newPassword);
682     coreAccountModel()->createOrUpdateAccount(account);
683     emit instance()->requestPasswordChange(nullptr, account.user(), oldPassword, newPassword);
684 }
685
686
687 void Client::corePasswordChanged(PeerPtr, bool success)
688 {
689     if (success)
690         coreAccountModel()->save();
691     emit passwordChanged(success);
692 }
693
694
695 #if QT_VERSION < 0x050000
696 void Client::logMessage(QtMsgType type, const char *msg)
697 {
698     fprintf(stderr, "%s\n", msg);
699     fflush(stderr);
700     if (type == QtFatalMsg) {
701         Quassel::logFatalMessage(msg);
702     }
703     else {
704         QString msgString = QString("%1\n").arg(msg);
705
706         //Check to see if there is an instance around, else we risk recursions
707         //when calling instance() and creating new ones.
708         if (!instanceExists())
709             return;
710
711         instance()->_debugLog << msgString;
712         emit instance()->logUpdated(msgString);
713     }
714 }
715 #else
716 void Client::logMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg)
717 {
718     Q_UNUSED(context);
719
720     fprintf(stderr, "%s\n", msg.toLocal8Bit().constData());
721     fflush(stderr);
722     if (type == QtFatalMsg) {
723         Quassel::logFatalMessage(msg.toLocal8Bit().constData());
724     }
725     else {
726         QString msgString = QString("%1\n").arg(msg);
727
728         //Check to see if there is an instance around, else we risk recursions
729         //when calling instance() and creating new ones.
730         if (!instanceExists())
731             return;
732
733         instance()->_debugLog << msgString;
734         emit instance()->logUpdated(msgString);
735     }
736 }
737 #endif