src/client/client.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-08 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  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "client.h"
  22
  23 #include "bufferinfo.h"
  24 #include "buffersyncer.h"
  25 #include "clientbacklogmanager.h"
  26 #include "bufferviewmanager.h"
  27 #include "global.h"
  28 #include "identity.h"
  29 #include "ircchannel.h"
  30 #include "ircuser.h"
  31 #include "message.h"
  32 #include "network.h"
  33 #include "networkmodel.h"
  34 #include "buffermodel.h"
  35 #include "quasselui.h"
  36 #include "signalproxy.h"
  37 #include "util.h"
  38 #include "buffersettings.h"
  39
  40 QPointer<Client> Client::instanceptr = 0;
  41 AccountId Client::_currentCoreAccount = 0;
  42
  43 /*** Initialization/destruction ***/
  44
  45 Client *Client::instance() {
  46   if(!instanceptr)
  47     instanceptr = new Client();
  48   return instanceptr;
  49 }
  50
  51 void Client::destroy() {
  52   //delete instanceptr;
  53   instanceptr->deleteLater();
  54 }
  55
  56 void Client::init(AbstractUi *ui) {
  57   instance()->mainUi = ui;
  58   instance()->init();
  59 }
  60
  61 Client::Client(QObject *parent)
  62   : QObject(parent),
  63     socket(0),
  64     _signalProxy(new SignalProxy(SignalProxy::Client, this)),
  65     mainUi(0),
  66     _networkModel(0),
  67     _bufferModel(0),
  68     _bufferSyncer(0),
  69     _backlogManager(new ClientBacklogManager(this)),
  70     _bufferViewManager(0),
  71     _connectedToCore(false),
  72     _syncedToCore(false)
  73 {
  74   _monitorBuffer = new Buffer(BufferInfo(), this);
  75   connect(_backlogManager, SIGNAL(backlog(BufferId, const QVariantList &)),
  76           this, SLOT(receiveBacklog(BufferId, const QVariantList &)));
  77 }
  78
  79 Client::~Client() {
  80   disconnectFromCore();
  81 }
  82
  83 void Client::init() {
  84   _currentCoreAccount = 0;
  85   _networkModel = new NetworkModel(this);
  86   connect(this, SIGNAL(bufferUpdated(BufferInfo)),
  87           _networkModel, SLOT(bufferUpdated(BufferInfo)));
  88   connect(this, SIGNAL(networkRemoved(NetworkId)),
  89           _networkModel, SLOT(networkRemoved(NetworkId)));
  90
  91   _bufferModel = new BufferModel(_networkModel);
  92
  93   SignalProxy *p = signalProxy();
  94
  95   p->attachSlot(SIGNAL(displayMsg(const Message &)), this, SLOT(recvMessage(const Message &)));
  96   p->attachSlot(SIGNAL(displayStatusMsg(QString, QString)), this, SLOT(recvStatusMsg(QString, QString)));
  97
  98   p->attachSlot(SIGNAL(bufferInfoUpdated(BufferInfo)), this, SLOT(updateBufferInfo(BufferInfo)));
  99   p->attachSignal(this, SIGNAL(sendInput(BufferInfo, QString)));
 100   p->attachSignal(this, SIGNAL(requestNetworkStates()));
 101
 102   p->attachSignal(this, SIGNAL(requestCreateIdentity(const Identity &)), SIGNAL(createIdentity(const Identity &)));
 103   p->attachSignal(this, SIGNAL(requestUpdateIdentity(const Identity &)), SIGNAL(updateIdentity(const Identity &)));
 104   p->attachSignal(this, SIGNAL(requestRemoveIdentity(IdentityId)), SIGNAL(removeIdentity(IdentityId)));
 105   p->attachSlot(SIGNAL(identityCreated(const Identity &)), this, SLOT(coreIdentityCreated(const Identity &)));
 106   p->attachSlot(SIGNAL(identityRemoved(IdentityId)), this, SLOT(coreIdentityRemoved(IdentityId)));
 107
 108   p->attachSignal(this, SIGNAL(requestCreateNetwork(const NetworkInfo &)), SIGNAL(createNetwork(const NetworkInfo &)));
 109   p->attachSignal(this, SIGNAL(requestUpdateNetwork(const NetworkInfo &)), SIGNAL(updateNetwork(const NetworkInfo &)));
 110   p->attachSignal(this, SIGNAL(requestRemoveNetwork(NetworkId)), SIGNAL(removeNetwork(NetworkId)));
 111   p->attachSlot(SIGNAL(networkCreated(NetworkId)), this, SLOT(coreNetworkCreated(NetworkId)));
 112   p->attachSlot(SIGNAL(networkRemoved(NetworkId)), this, SLOT(coreNetworkRemoved(NetworkId)));
 113
 114   connect(p, SIGNAL(disconnected()), this, SLOT(disconnectFromCore()));
 115
 116   //connect(mainUi, SIGNAL(connectToCore(const QVariantMap &)), this, SLOT(connectToCore(const QVariantMap &)));
 117   connect(mainUi, SIGNAL(disconnectFromCore()), this, SLOT(disconnectFromCore()));
 118   connect(this, SIGNAL(connected()), mainUi, SLOT(connectedToCore()));
 119   connect(this, SIGNAL(disconnected()), mainUi, SLOT(disconnectedFromCore()));
 120
 121   layoutTimer = new QTimer(this);
 122   layoutTimer->setInterval(0);
 123   layoutTimer->setSingleShot(false);
 124   connect(layoutTimer, SIGNAL(timeout()), this, SLOT(layoutMsg()));
 125
 126 }
 127
 128 /*** public static methods ***/
 129
 130 AccountId Client::currentCoreAccount() {
 131   return _currentCoreAccount;
 132 }
 133
 134 void Client::setCurrentCoreAccount(AccountId id) {
 135   _currentCoreAccount = id;
 136 }
 137
 138 QList<BufferInfo> Client::allBufferInfos() {
 139   QList<BufferInfo> bufferids;
 140   foreach(Buffer *buffer, buffers()) {
 141     bufferids << buffer->bufferInfo();
 142   }
 143   return bufferids;
 144 }
 145
 146 QList<Buffer *> Client::buffers() {
 147   return instance()->_buffers.values();
 148 }
 149
 150
 151 Buffer *Client::statusBuffer(const NetworkId &networkId) const {
 152   if(_statusBuffers.contains(networkId))
 153     return _statusBuffers[networkId];
 154   else
 155     return 0;
 156 }
 157
 158 Buffer *Client::buffer(BufferId bufferId) {
 159   if(instance()->_buffers.contains(bufferId))
 160     return instance()->_buffers[bufferId];
 161   else
 162     return 0;
 163 }
 164
 165 Buffer *Client::buffer(BufferInfo bufferInfo) {
 166   Buffer *buff = buffer(bufferInfo.bufferId());
 167
 168   if(!buff) {
 169     Client *client = Client::instance();
 170     buff = new Buffer(bufferInfo, client);
 171     connect(buff, SIGNAL(destroyed()), client, SLOT(bufferDestroyed()));
 172     client->_buffers[bufferInfo.bufferId()] = buff;
 173     if(bufferInfo.type() == BufferInfo::StatusBuffer)
 174       client->_statusBuffers[bufferInfo.networkId()] = buff;
 175
 176     emit client->bufferUpdated(bufferInfo);
 177
 178     // I don't like this: but currently there isn't really a prettier way:
 179     if(isSynced()) {  // this slows down syncing a lot, so disable it during sync
 180       QModelIndex bufferIdx = networkModel()->bufferIndex(bufferInfo.bufferId());
 181       bufferModel()->setCurrentIndex(bufferModel()->mapFromSource(bufferIdx));
 182     }
 183   }
 184   Q_ASSERT(buff);
 185   return buff;
 186 }
 187
 188 bool Client::isConnected() {
 189   return instance()->_connectedToCore;
 190 }
 191
 192 bool Client::isSynced() {
 193   return instance()->_syncedToCore;
 194 }
 195
 196 /*** Network handling ***/
 197
 198 QList<NetworkId> Client::networkIds() {
 199   return instance()->_networks.keys();
 200 }
 201
 202 const Network * Client::network(NetworkId networkid) {
 203   if(instance()->_networks.contains(networkid)) return instance()->_networks[networkid];
 204   else return 0;
 205 }
 206
 207 void Client::createNetwork(const NetworkInfo &info) {
 208   emit instance()->requestCreateNetwork(info);
 209 }
 210
 211 void Client::updateNetwork(const NetworkInfo &info) {
 212   emit instance()->requestUpdateNetwork(info);
 213 }
 214
 215 void Client::removeNetwork(NetworkId id) {
 216   emit instance()->requestRemoveNetwork(id);
 217 }
 218
 219 void Client::addNetwork(Network *net) {
 220   net->setProxy(signalProxy());
 221   signalProxy()->synchronize(net);
 222   networkModel()->attachNetwork(net);
 223   connect(net, SIGNAL(destroyed()), instance(), SLOT(networkDestroyed()));
 224   instance()->_networks[net->networkId()] = net;
 225   emit instance()->networkCreated(net->networkId());
 226 }
 227
 228 void Client::coreNetworkCreated(NetworkId id) {
 229   if(_networks.contains(id)) {
 230     qWarning() << "Creation of already existing network requested!";
 231     return;
 232   }
 233   Network *net = new Network(id, this);
 234   addNetwork(net);
 235 }
 236
 237 void Client::coreNetworkRemoved(NetworkId id) {
 238   if(!_networks.contains(id)) return;
 239   Network *net = _networks.take(id);
 240   emit networkRemoved(net->networkId());
 241   net->deleteLater();
 242 }
 243
 244 /*** Identity handling ***/
 245
 246 QList<IdentityId> Client::identityIds() {
 247   return instance()->_identities.keys();
 248 }
 249
 250 const Identity * Client::identity(IdentityId id) {
 251   if(instance()->_identities.contains(id)) return instance()->_identities[id];
 252   else return 0;
 253 }
 254
 255 void Client::createIdentity(const Identity &id) {
 256   emit instance()->requestCreateIdentity(id);
 257 }
 258
 259 void Client::updateIdentity(const Identity &id) {
 260   emit instance()->requestUpdateIdentity(id);
 261 }
 262
 263 void Client::removeIdentity(IdentityId id) {
 264   emit instance()->requestRemoveIdentity(id);
 265 }
 266
 267 void Client::coreIdentityCreated(const Identity &other) {
 268   if(!_identities.contains(other.id())) {
 269     Identity *identity = new Identity(other, this);
 270     _identities[other.id()] = identity;
 271     identity->setInitialized();
 272     signalProxy()->synchronize(identity);
 273     emit identityCreated(other.id());
 274   } else {
 275     qWarning() << tr("Identity already exists in client!");
 276   }
 277 }
 278
 279 void Client::coreIdentityRemoved(IdentityId id) {
 280   if(_identities.contains(id)) {
 281     emit identityRemoved(id);
 282     Identity *i = _identities.take(id);
 283     i->deleteLater();
 284   }
 285 }
 286
 287 /***  ***/
 288 void Client::userInput(BufferInfo bufferInfo, QString message) {
 289   emit instance()->sendInput(bufferInfo, message);
 290 }
 291
 292 /*** core connection stuff ***/
 293
 294 void Client::setConnectedToCore(QIODevice *sock, AccountId id) {
 295   socket = sock;
 296   signalProxy()->addPeer(socket);
 297   _connectedToCore = true;
 298   setCurrentCoreAccount(id);
 299 }
 300
 301 void Client::setSyncedToCore() {
 302   // create buffersyncer
 303   Q_ASSERT(!_bufferSyncer);
 304   _bufferSyncer = new BufferSyncer(this);
 305   connect(bufferSyncer(), SIGNAL(lastSeenMsgSet(BufferId, MsgId)), this, SLOT(updateLastSeenMsg(BufferId, MsgId)));
 306   connect(bufferSyncer(), SIGNAL(bufferRemoved(BufferId)), this, SLOT(bufferRemoved(BufferId)));
 307   connect(bufferSyncer(), SIGNAL(bufferRenamed(BufferId, QString)), this, SLOT(bufferRenamed(BufferId, QString)));
 308   signalProxy()->synchronize(bufferSyncer());
 309
 310   // attach backlog manager
 311   signalProxy()->synchronize(backlogManager());
 312
 313   // create a new BufferViewManager
 314   _bufferViewManager = new BufferViewManager(signalProxy(), this);
 315
 316   _syncedToCore = true;
 317   emit connected();
 318   emit coreConnectionStateChanged(true);
 319 }
 320
 321 void Client::disconnectFromCore() {
 322   if(!isConnected())
 323     return;
 324
 325   if(socket) {
 326     socket->close();
 327     socket->deleteLater();
 328   }
 329   _connectedToCore = false;
 330   _syncedToCore = false;
 331   setCurrentCoreAccount(0);
 332   emit disconnected();
 333   emit coreConnectionStateChanged(false);
 334
 335   // Clear internal data. Hopefully nothing relies on it at this point.
 336   if(_bufferSyncer) {
 337     _bufferSyncer->deleteLater();
 338     _bufferSyncer = 0;
 339   }
 340
 341   if(_bufferViewManager) {
 342     _bufferViewManager->deleteLater();
 343     _bufferViewManager = 0;
 344   }
 345
 346   _networkModel->clear();
 347
 348   QHash<BufferId, Buffer *>::iterator bufferIter =  _buffers.begin();
 349   while(bufferIter != _buffers.end()) {
 350     Buffer *buffer = bufferIter.value();
 351     disconnect(buffer, SIGNAL(destroyed()), this, 0);
 352     bufferIter = _buffers.erase(bufferIter);
 353     buffer->deleteLater();
 354   }
 355   Q_ASSERT(_buffers.isEmpty());
 356
 357   _statusBuffers.clear();
 358
 359   QHash<NetworkId, Network*>::iterator netIter = _networks.begin();
 360   while(netIter != _networks.end()) {
 361     Network *net = netIter.value();
 362     emit networkRemoved(net->networkId());
 363     disconnect(net, SIGNAL(destroyed()), this, 0);
 364     netIter = _networks.erase(netIter);
 365     net->deleteLater();
 366   }
 367   Q_ASSERT(_networks.isEmpty());
 368
 369   QHash<IdentityId, Identity*>::iterator idIter = _identities.begin();
 370   while(idIter != _identities.end()) {
 371     Identity *id = idIter.value();
 372     emit identityRemoved(id->id());
 373     idIter = _identities.erase(idIter);
 374     id->deleteLater();
 375   }
 376   Q_ASSERT(_identities.isEmpty());
 377
 378   layoutQueue.clear();
 379   layoutTimer->stop();
 380 }
 381
 382 void Client::setCoreConfiguration(const QVariantMap &settings) {
 383   SignalProxy::writeDataToDevice(socket, settings);
 384 }
 385
 386 /*** ***/
 387
 388 void Client::updateBufferInfo(BufferInfo id) {
 389   emit bufferUpdated(id);
 390 }
 391
 392 void Client::bufferDestroyed() {
 393   Buffer *buffer = static_cast<Buffer *>(sender());
 394   QHash<BufferId, Buffer *>::iterator iter = _buffers.begin();
 395   while(iter != _buffers.end()) {
 396     if(iter.value() == buffer) {
 397       iter = _buffers.erase(iter);
 398       break;
 399     }
 400     iter++;
 401   }
 402
 403   QHash<NetworkId, Buffer *>::iterator statusIter = _statusBuffers.begin();
 404   while(statusIter != _statusBuffers.end()) {
 405     if(statusIter.value() == buffer) {
 406       statusIter = _statusBuffers.erase(statusIter);
 407       break;
 408     }
 409     statusIter++;
 410   }
 411 }
 412
 413 void Client::networkDestroyed() {
 414   Network *net = static_cast<Network *>(sender());
 415   QHash<NetworkId, Network *>::iterator netIter = _networks.begin();
 416   while(netIter != _networks.end()) {
 417     if(*netIter == net) {
 418       netIter = _networks.erase(netIter);
 419       break;
 420     } else {
 421       netIter++;
 422     }
 423   }
 424 }
 425
 426 void Client::recvMessage(const Message &message) {
 427   Message msg = message;
 428   Buffer *b;
 429
 430   checkForHighlight(msg);
 431
 432   if(msg.flags() & Message::Redirected) {
 433     BufferSettings bufferSettings;
 434     bool inStatus = bufferSettings.value("UserMessagesInStatusBuffer", QVariant(true)).toBool();
 435     bool inQuery = bufferSettings.value("UserMessagesInQueryBuffer", QVariant(false)).toBool();
 436     bool inCurrent = bufferSettings.value("UserMessagesInCurrentBuffer", QVariant(false)).toBool();
 437
 438     if(inStatus) {
 439       b = statusBuffer(msg.bufferInfo().networkId());
 440       if(b) {
 441         b->appendMsg(msg);
 442       } else if(!inQuery && !inCurrent) {       // make sure the message get's shown somewhere
 443         b = buffer(msg.bufferInfo());
 444         b->appendMsg(msg);
 445       }
 446     }
 447
 448     if(inQuery) {
 449       b = buffer(msg.bufferInfo().bufferId());
 450       if(b) {
 451         b->appendMsg(msg);
 452       } else if(!inStatus && !inCurrent) {      // make sure the message get's shown somewhere
 453         b = statusBuffer(msg.bufferInfo().networkId());
 454         if(!b)
 455           b = buffer(msg.bufferInfo()); // seems like we have to create the buffer anyways...
 456         b->appendMsg(msg);
 457       }
 458     }
 459
 460     if(inCurrent) {
 461       BufferId currentId = bufferModel()->currentIndex().data(NetworkModel::BufferIdRole).value<BufferId>();
 462       b = buffer(currentId);
 463       if(b && currentId != msg.bufferInfo().bufferId() && !inQuery) {
 464         b->appendMsg(msg);
 465       } else if(!inStatus && !inQuery) {        // make sure the message get's shown somewhere
 466         b = statusBuffer(msg.bufferInfo().networkId());
 467         if(!b)
 468           b = buffer(msg.bufferInfo()); // seems like we have to create the buffer anyways...
 469         b->appendMsg(msg);
 470       }
 471     }
 472   } else {
 473     // the regular case: we can deliver where it was supposed to go
 474     b = buffer(msg.bufferInfo());
 475     b->appendMsg(msg);
 476   }
 477
 478   //bufferModel()->updateBufferActivity(msg);
 479
 480   if(msg.type() == Message::Plain || msg.type() == Message::Notice || msg.type() == Message::Action) {
 481     const Network *net = network(msg.bufferInfo().networkId());
 482     QString networkName = net != 0
 483       ? net->networkName() + ":"
 484       : QString();
 485     QString sender = networkName + msg.bufferInfo().bufferName() + ":" + msg.sender();
 486     Message mmsg = Message(msg.timestamp(), msg.bufferInfo(), msg.type(), msg.text(), sender, msg.flags());
 487     monitorBuffer()->appendMsg(mmsg);
 488   }
 489
 490   emit messageReceived(msg);
 491 }
 492
 493 void Client::recvStatusMsg(QString /*net*/, QString /*msg*/) {
 494   //recvMessage(net, Message::server("", QString("[STATUS] %1").arg(msg)));
 495 }
 496
 497 void Client::receiveBacklog(BufferId bufferId, const QVariantList &msgs) {
 498   Buffer *buffer_ = buffer(bufferId);
 499   if(!buffer_) {
 500     qWarning() << "Client::recvBacklogData(): received Backlog for unknown Buffer:" << bufferId;
 501     return;
 502   }
 503
 504   if(msgs.isEmpty())
 505     return; // no work to be done...
 506
 507   QVariantList::const_iterator msgIter = msgs.constBegin();
 508   QVariantList::const_iterator msgIterEnd = msgs.constEnd();
 509   Message msg;
 510   while(msgIter != msgIterEnd) {
 511     msg = (*msgIter).value<Message>();
 512     checkForHighlight(msg);
 513     buffer_->prependMsg(msg);
 514     msgIter++;
 515   }
 516
 517   if(!layoutQueue.contains(buffer_))
 518     layoutQueue.append(buffer_);
 519
 520   if(!layoutTimer->isActive()) {
 521     layoutTimer->start();
 522   }
 523 }
 524
 525 void Client::layoutMsg() {
 526   if(layoutQueue.isEmpty()) {
 527     layoutTimer->stop();
 528     return;
 529   }
 530
 531   Buffer *buffer = layoutQueue.takeFirst();
 532   if(buffer->layoutMsg()) {
 533     layoutQueue.append(buffer);  // Buffer has more messages in its queue --> Round Robin
 534     return;
 535   }
 536
 537   if(layoutQueue.isEmpty())
 538     layoutTimer->stop();
 539 }
 540
 541 AbstractUiMsg *Client::layoutMsg(const Message &msg) {
 542   return instance()->mainUi->layoutMsg(msg);
 543 }
 544
 545 void Client::checkForHighlight(Message &msg) {
 546   NotificationSettings notificationSettings;
 547   const Network *net = network(msg.bufferInfo().networkId());
 548   if(net && !net->myNick().isEmpty()) {
 549     if(notificationSettings.highlightCurrentNick()) {
 550       QRegExp nickRegExp("^(.*\\W)?" + QRegExp::escape(net->myNick()) + "(\\W.*)?$");
 551       if((msg.type() & (Message::Plain | Message::Notice | Message::Action))
 552           && !(msg.flags() & Message::Self)
 553           && nickRegExp.exactMatch(msg.text())) {
 554             msg.setFlags(msg.flags() | Message::Highlight);
 555             return;
 556       }
 557     }
 558     foreach(QVariant highlight, notificationSettings.highlightList()) {
 559       QVariantMap highlightRule = highlight.toMap();
 560       if(!highlightRule["enable"].toBool())
 561         continue;
 562       QString name = highlightRule["name"].toString();
 563       QRegExp userRegExp;
 564       if(highlightRule["regex"].toBool()) {
 565         userRegExp = QRegExp(name);
 566       } else {
 567         userRegExp = QRegExp("^(.*\\W)?" + QRegExp::escape(name) + "(\\W.*)?$");
 568       }
 569       if((msg.type() & (Message::Plain | Message::Notice | Message::Action))
 570           && !(msg.flags() & Message::Self)
 571           && userRegExp.exactMatch(msg.text())) {
 572         msg.setFlags(msg.flags() | Message::Highlight);
 573         return;
 574       }
 575     }
 576   }
 577 }
 578
 579 void Client::updateLastSeenMsg(BufferId id, const MsgId &msgId) {
 580   Buffer *b = buffer(id);
 581   if(!b) {
 582     qWarning() << "Client::updateLastSeen(): Unknown buffer" << id;
 583     return;
 584   }
 585   b->setLastSeenMsg(msgId);
 586 }
 587
 588 void Client::setBufferLastSeenMsg(BufferId id, const MsgId &msgId) {
 589   if(!bufferSyncer())
 590     return;
 591   bufferSyncer()->requestSetLastSeenMsg(id, msgId);
 592 }
 593
 594 void Client::removeBuffer(BufferId id) {
 595   if(!bufferSyncer()) return;
 596   bufferSyncer()->requestRemoveBuffer(id);
 597 }
 598
 599 void Client::bufferRemoved(BufferId bufferId) {
 600   // first remove the buffer from has. this prohibits further lastSeenUpdates
 601   Buffer *buff = 0;
 602   if(_buffers.contains(bufferId)) {
 603     buff = _buffers.take(bufferId);
 604     disconnect(buff, 0, this, 0);
 605   }
 606
 607   // then we select a sane buffer (status buffer)
 608   /* we have to manually select a buffer because otherwise inconsitent changes
 609    * to the model might occur:
 610    * the result of a buffer removal triggers a change in the selection model.
 611    * the newly selected buffer might be a channel that hasn't been selected yet
 612    * and a new nickview would be created (which never heard of the "rowsAboutToBeRemoved").
 613    * this new view (and/or) its sort filter will then only receive a "rowsRemoved" signal.
 614    */
 615   QModelIndex current = bufferModel()->currentIndex();
 616   if(current.data(NetworkModel::BufferIdRole).value<BufferId>() == bufferId) {
 617     bufferModel()->setCurrentIndex(current.sibling(0,0));
 618   }
 619
 620   // and remove it from the model
 621   networkModel()->removeBuffer(bufferId);
 622
 623   if(buff)
 624     buff->deleteLater();
 625 }
 626
 627 void Client::bufferRenamed(BufferId bufferId, const QString &newName) {
 628   QModelIndex bufferIndex = networkModel()->bufferIndex(bufferId);
 629   if(bufferIndex.isValid()) {
 630     networkModel()->setData(bufferIndex, newName, Qt::DisplayRole);
 631   }
 632 }