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 "global.h"
  25 #include "identity.h"
  26 #include "ircchannel.h"
  27 #include "ircuser.h"
  28 #include "message.h"
  29 #include "networkinfo.h"
  30 #include "networkmodel.h"
  31 #include "buffermodel.h"
  32 #include "quasselui.h"
  33 #include "signalproxy.h"
  34 #include "util.h"
  35
  36 QPointer<Client> Client::instanceptr = 0;
  37
  38 /*** Initialization/destruction ***/
  39
  40 Client *Client::instance() {
  41   if(!instanceptr)
  42     instanceptr = new Client();
  43   return instanceptr;
  44 }
  45
  46 void Client::destroy() {
  47   delete instanceptr;
  48 }
  49
  50 void Client::init(AbstractUi *ui) {
  51   instance()->mainUi = ui;
  52   instance()->init();
  53 }
  54
  55 Client::Client(QObject *parent)
  56   : QObject(parent),
  57     socket(0),
  58     _signalProxy(new SignalProxy(SignalProxy::Client, this)),
  59     mainUi(0),
  60     _networkModel(0),
  61     _bufferModel(0),
  62     connectedToCore(false)
  63 {
  64 }
  65
  66 Client::~Client() {
  67 }
  68
  69 void Client::init() {
  70   blockSize = 0;
  71
  72   _networkModel = new NetworkModel(this);
  73   _bufferModel = new BufferModel(_networkModel);
  74
  75   connect(this, SIGNAL(bufferSelected(Buffer *)),
  76           _bufferModel, SLOT(selectBuffer(Buffer *)));
  77
  78   connect(this, SIGNAL(bufferUpdated(Buffer *)),
  79           _networkModel, SLOT(bufferUpdated(Buffer *)));
  80   connect(this, SIGNAL(bufferActivity(Buffer::ActivityLevel, Buffer *)),
  81           _networkModel, SLOT(bufferActivity(Buffer::ActivityLevel, Buffer *)));
  82
  83   SignalProxy *p = signalProxy();
  84   p->attachSignal(this, SIGNAL(sendSessionData(const QString &, const QVariant &)),
  85                   SIGNAL(clientSessionDataChanged(const QString &, const QVariant &)));
  86   p->attachSlot(SIGNAL(coreSessionDataChanged(const QString &, const QVariant &)),
  87                 this, SLOT(recvSessionData(const QString &, const QVariant &)));
  88   p->attachSlot(SIGNAL(coreState(const QVariant &)),
  89                 this, SLOT(recvCoreState(const QVariant &)));
  90   p->attachSlot(SIGNAL(networkConnected(uint)),
  91                 this, SLOT(networkConnected(uint)));
  92   p->attachSlot(SIGNAL(networkDisconnected(uint)),
  93                 this, SLOT(networkDisconnected(uint)));
  94   p->attachSlot(SIGNAL(displayMsg(const Message &)),
  95                 this, SLOT(recvMessage(const Message &)));
  96   p->attachSlot(SIGNAL(displayStatusMsg(QString, QString)),
  97                 this, SLOT(recvStatusMsg(QString, QString)));
  98
  99
 100   p->attachSlot(SIGNAL(backlogData(BufferInfo, const QVariantList &, bool)), this, SLOT(recvBacklogData(BufferInfo, const QVariantList &, bool)));
 101   p->attachSlot(SIGNAL(bufferInfoUpdated(BufferInfo)), this, SLOT(updateBufferInfo(BufferInfo)));
 102   p->attachSignal(this, SIGNAL(sendInput(BufferInfo, QString)));
 103   p->attachSignal(this, SIGNAL(requestNetworkStates()));
 104
 105   p->attachSignal(this, SIGNAL(requestCreateIdentity(const Identity &)), SIGNAL(createIdentity(const Identity &)));
 106   p->attachSignal(this, SIGNAL(requestUpdateIdentity(const Identity &)), SIGNAL(updateIdentity(const Identity &)));
 107   p->attachSignal(this, SIGNAL(requestRemoveIdentity(IdentityId)), SIGNAL(removeIdentity(IdentityId)));
 108   p->attachSlot(SIGNAL(identityCreated(const Identity &)), this, SLOT(coreIdentityCreated(const Identity &)));
 109   p->attachSlot(SIGNAL(identityRemoved(IdentityId)), this, SLOT(coreIdentityRemoved(IdentityId)));
 110
 111   connect(mainUi, SIGNAL(connectToCore(const QVariantMap &)), this, SLOT(connectToCore(const QVariantMap &)));
 112   connect(mainUi, SIGNAL(disconnectFromCore()), this, SLOT(disconnectFromCore()));
 113   connect(this, SIGNAL(connected()), mainUi, SLOT(connectedToCore()));
 114   connect(this, SIGNAL(disconnected()), mainUi, SLOT(disconnectedFromCore()));
 115
 116   layoutTimer = new QTimer(this);
 117   layoutTimer->setInterval(0);
 118   layoutTimer->setSingleShot(false);
 119   connect(layoutTimer, SIGNAL(timeout()), this, SLOT(layoutMsg()));
 120
 121 }
 122
 123 /*** public static methods ***/
 124
 125
 126 QList<NetworkInfo *> Client::networkInfos() {
 127   return instance()->_networkInfo.values();
 128 }
 129
 130 NetworkInfo *Client::networkInfo(uint networkid) {
 131   if(instance()->_networkInfo.contains(networkid))
 132     return instance()->_networkInfo[networkid];
 133   else
 134     return 0;
 135 }
 136
 137 QList<BufferInfo> Client::allBufferInfos() {
 138   QList<BufferInfo> bufferids;
 139   foreach(Buffer *buffer, buffers()) {
 140     bufferids << buffer->bufferInfo();
 141   }
 142   return bufferids;
 143 }
 144
 145 QList<Buffer *> Client::buffers() {
 146   return instance()->_buffers.values();
 147 }
 148
 149 Buffer *Client::buffer(uint bufferUid) {
 150   if(instance()->_buffers.contains(bufferUid))
 151     return instance()->_buffers[bufferUid];
 152   else
 153     return 0;
 154 }
 155
 156 Buffer *Client::buffer(BufferInfo id) {
 157   Buffer *buff = buffer(id.uid());
 158
 159   if(!buff) {
 160     Client *client = Client::instance();
 161     buff = new Buffer(id, client);
 162
 163     connect(buff, SIGNAL(userInput(BufferInfo, QString)),
 164             client, SLOT(userInput(BufferInfo, QString)));
 165     connect(buff, SIGNAL(bufferUpdated(Buffer *)),
 166             client, SIGNAL(bufferUpdated(Buffer *)));
 167     connect(buff, SIGNAL(destroyed()),
 168             client, SLOT(bufferDestroyed()));
 169     client->_buffers[id.uid()] = buff;
 170     emit client->bufferUpdated(buff);
 171   }
 172   Q_ASSERT(buff);
 173   return buff;
 174 }
 175
 176 // FIXME switch to netids!
 177 // WHEN IS THIS NEEDED ANYHOW!?
 178 // ...only for finding the Buffer for a channel, I guess...
 179 BufferInfo Client::bufferInfo(QString net, QString buf) {
 180   foreach(Buffer *buffer_, buffers()) {
 181     BufferInfo bufferInfo = buffer_->bufferInfo();
 182     if(!bufferInfo.network().compare(net, Qt::CaseInsensitive) && !bufferInfo.buffer().compare(buf, Qt::CaseInsensitive))
 183       return bufferInfo;
 184   }
 185   Q_ASSERT(false);  // should never happen!
 186   return BufferInfo();
 187 }
 188
 189 BufferInfo Client::statusBufferInfo(QString net) {
 190   return bufferInfo(net, "");
 191 }
 192
 193 NetworkModel *Client::networkModel() {
 194   return instance()->_networkModel;
 195 }
 196
 197 BufferModel *Client::bufferModel() {
 198   return instance()->_bufferModel;
 199 }
 200
 201
 202 SignalProxy *Client::signalProxy() {
 203   return instance()->_signalProxy;
 204 }
 205
 206
 207 /*** Identity handling ***/
 208
 209 QList<IdentityId> Client::identityIds() {
 210   return instance()->_identities.keys();
 211 }
 212
 213 const Identity * Client::identity(IdentityId id) {
 214   if(instance()->_identities.contains(id)) return instance()->_identities[id];
 215   else return 0;
 216 }
 217
 218
 219 void Client::createIdentity(const Identity &id) {
 220   emit instance()->requestCreateIdentity(id);
 221 }
 222
 223 void Client::updateIdentity(const Identity &id) {
 224   emit instance()->requestUpdateIdentity(id);
 225 }
 226
 227 void Client::removeIdentity(IdentityId id) {
 228   emit instance()->requestRemoveIdentity(id);
 229 }
 230
 231 void Client::coreIdentityCreated(const Identity &other) {
 232   if(!_identities.contains(other.id())) {
 233     Identity *identity = new Identity(other, this);
 234     _identities[other.id()] = identity;
 235     identity->setInitialized();
 236     signalProxy()->synchronize(identity);
 237     emit identityCreated(other.id());
 238   } else {
 239     qWarning() << tr("Identity already exists in client!");
 240   }
 241 }
 242
 243 void Client::coreIdentityRemoved(IdentityId id) {
 244   if(_identities.contains(id)) {
 245     emit identityRemoved(id);
 246     Identity *i = _identities.take(id);
 247     i->deleteLater();
 248   }
 249 }
 250
 251 /***  ***/
 252
 253
 254 bool Client::isConnected() {
 255   return instance()->connectedToCore;
 256 }
 257
 258 void Client::fakeInput(uint bufferUid, QString message) {
 259   Buffer *buff = buffer(bufferUid);
 260   if(!buff)
 261     qWarning() << "No Buffer with uid" << bufferUid << "can't send Input" << message;
 262   else
 263     emit instance()->sendInput(buff->bufferInfo(), message);
 264 }
 265
 266 void Client::fakeInput(BufferInfo bufferInfo, QString message) {
 267   fakeInput(bufferInfo, message);
 268 }
 269
 270 void Client::connectToCore(const QVariantMap &conn) {
 271   // TODO implement SSL
 272   coreConnectionInfo = conn;
 273   if(isConnected()) {
 274     emit coreConnectionError(tr("Already connected to Core!"));
 275     return;
 276   }
 277
 278   if(socket != 0)
 279     socket->deleteLater();
 280
 281   if(conn["Host"].toString().isEmpty()) {
 282     clientMode = LocalCore;
 283     socket = new QBuffer(this);
 284     connect(socket, SIGNAL(readyRead()), this, SLOT(coreHasData()));
 285     socket->open(QIODevice::ReadWrite);
 286     //QVariant state = connectToLocalCore(coreConnectionInfo["User"].toString(), coreConnectionInfo["Password"].toString());
 287     //syncToCore(state);
 288     coreSocketConnected();
 289   } else {
 290     clientMode = RemoteCore;
 291     emit coreConnectionMsg(tr("Connecting..."));
 292     Q_ASSERT(!socket);
 293     QTcpSocket *sock = new QTcpSocket(this);
 294     socket = sock;
 295     connect(sock, SIGNAL(readyRead()), this, SLOT(coreHasData()));
 296     connect(sock, SIGNAL(connected()), this, SLOT(coreSocketConnected()));
 297     connect(signalProxy(), SIGNAL(disconnected()), this, SLOT(coreSocketDisconnected()));
 298     connect(sock, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(coreSocketError(QAbstractSocket::SocketError)));
 299     sock->connectToHost(conn["Host"].toString(), conn["Port"].toUInt());
 300   }
 301 }
 302
 303 void Client::disconnectFromCore() {
 304   socket->close();
 305 }
 306
 307 void Client::setCoreConfiguration(const QVariantMap &settings) {
 308   SignalProxy::writeDataToDevice(socket, settings);
 309 }
 310
 311 void Client::coreSocketConnected() {
 312   connect(this, SIGNAL(recvPartialItem(uint, uint)), this, SIGNAL(coreConnectionProgress(uint, uint)));
 313   emit coreConnectionMsg(tr("Synchronizing to core..."));
 314   QVariantMap clientInit;
 315   clientInit["GuiProtocol"] = GUI_PROTOCOL;
 316   clientInit["User"] = coreConnectionInfo["User"].toString();
 317   clientInit["Password"] = coreConnectionInfo["Password"].toString();
 318   SignalProxy::writeDataToDevice(socket, clientInit);
 319 }
 320
 321 void Client::coreSocketDisconnected() {
 322   instance()->connectedToCore = false;
 323   emit disconnected();
 324   emit coreConnectionStateChanged(false);
 325   socket->deleteLater();
 326   blockSize = 0;
 327
 328   /* Clear internal data. Hopefully nothing relies on it at this point. */
 329   _networkModel->clear();
 330
 331   QHash<BufferId, Buffer *>::iterator bufferIter =  _buffers.begin();
 332   while(bufferIter != _buffers.end()) {
 333     Buffer *buffer = bufferIter.value();
 334     disconnect(buffer, SIGNAL(destroyed()), this, 0);
 335     bufferIter = _buffers.erase(bufferIter);
 336     buffer->deleteLater();
 337   }
 338   Q_ASSERT(_buffers.isEmpty());
 339
 340
 341   QHash<NetworkId, NetworkInfo*>::iterator netIter = _networkInfo.begin();
 342   while(netIter != _networkInfo.end()) {
 343     NetworkInfo *net = netIter.value();
 344     disconnect(net, SIGNAL(destroyed()), this, 0);
 345     netIter = _networkInfo.erase(netIter);
 346     net->deleteLater();
 347   }
 348   Q_ASSERT(_networkInfo.isEmpty());
 349
 350   QHash<IdentityId, Identity*>::iterator idIter = _identities.begin();
 351   while(idIter != _identities.end()) {
 352     Identity *id = idIter.value();
 353     emit identityRemoved(id->id());
 354     idIter = _identities.erase(idIter);
 355     id->deleteLater();
 356   }
 357   Q_ASSERT(_identities.isEmpty());
 358
 359   coreConnectionInfo.clear();
 360   sessionData.clear();
 361   layoutQueue.clear();
 362   layoutTimer->stop();
 363 }
 364
 365 void Client::recvCoreState(const QVariant &state) {
 366   disconnect(this, SIGNAL(recvPartialItem(uint, uint)), this, SIGNAL(coreConnectionProgress(uint, uint)));
 367   disconnect(socket, 0, this, 0);  // rest of communication happens through SignalProxy
 368   signalProxy()->addPeer(socket);
 369   syncToCore(state);
 370 }
 371
 372 // TODO: auth errors
 373 void Client::syncToCore(const QVariant &coreState) {
 374   if(!coreState.toMap().contains("SessionState")) {
 375     emit coreConnectionError(tr("Invalid data received from core!"));
 376     disconnectFromCore();
 377     return;
 378   }
 379
 380   QVariantMap sessionState = coreState.toMap()["SessionState"].toMap();
 381
 382   // store sessionData
 383   QVariantMap sessData = sessionState["SessionData"].toMap();
 384   foreach(QString key, sessData.keys())
 385     recvSessionData(key, sessData[key]);
 386
 387   // create identities
 388   foreach(QVariant vid, sessionState["Identities"].toList()) {
 389     coreIdentityCreated(vid.value<Identity>());
 390     //Identity *id = new Identity(vid.value<Identity>(), this);
 391     //_identities[id->id()] = id;
 392     //signalProxy()->synchronize(id);
 393     //qDebug() << "received identity" << id->identityName();
 394   }
 395
 396   // store Buffer details
 397   QVariantList coreBuffers = sessionState["Buffers"].toList();
 398   /* make lookups by id faster */
 399   foreach(QVariant vid, coreBuffers) {
 400     buffer(vid.value<BufferInfo>()); // create all buffers, so we see them in the network views
 401   }
 402
 403   // create networkInfo objects
 404   QVariantList networkids = sessionState["Networks"].toList();
 405   foreach(QVariant networkid, networkids) {
 406     networkConnected(networkid.toUInt());
 407   }
 408
 409   instance()->connectedToCore = true;
 410   updateCoreConnectionProgress();
 411
 412 }
 413
 414 void Client::updateCoreConnectionProgress() {
 415   // we'll do this in three steps:
 416   // 1.) networks
 417   // 2.) channels
 418   // 3.) ircusers
 419
 420   int numNets = networkInfos().count();
 421   int numNetsWaiting = 0;
 422
 423   int numIrcUsers = 0;
 424   int numIrcUsersWaiting = 0;
 425
 426   int numChannels = 0;
 427   int numChannelsWaiting = 0;
 428
 429   foreach(NetworkInfo *net, networkInfos()) {
 430     if(! net->initialized())
 431       numNetsWaiting++;
 432
 433     numIrcUsers += net->ircUsers().count();
 434     foreach(IrcUser *user, net->ircUsers()) {
 435       if(! user->initialized())
 436         numIrcUsersWaiting++;
 437     }
 438
 439     numChannels += net->ircChannels().count();
 440     foreach(IrcChannel *channel, net->ircChannels()) {
 441       if(! channel->initialized())
 442         numChannelsWaiting++;
 443     }
 444   }
 445
 446   if(numNetsWaiting > 0) {
 447     emit coreConnectionMsg(tr("Requesting network states..."));
 448     emit coreConnectionProgress(numNets - numNetsWaiting, numNets);
 449     return;
 450   }
 451
 452   if(numIrcUsersWaiting > 0) {
 453     emit coreConnectionMsg(tr("Requesting User states..."));
 454     emit coreConnectionProgress(numIrcUsers - numIrcUsersWaiting, numIrcUsers);
 455     return;
 456   }
 457
 458   if(numChannelsWaiting > 0) {
 459     emit coreConnectionMsg(tr("Requesting Channel states..."));
 460     emit coreConnectionProgress(numChannels - numChannelsWaiting, numChannels);
 461     return;
 462   }
 463
 464   emit coreConnectionProgress(1,1);
 465   emit connected();
 466   emit coreConnectionStateChanged(true);
 467   foreach(NetworkInfo *net, networkInfos()) {
 468     disconnect(net, 0, this, SLOT(updateCoreConnectionProgress()));
 469   }
 470
 471   // signalProxy()->dumpProxyStats();
 472 }
 473
 474 void Client::recvSessionData(const QString &key, const QVariant &data) {
 475   sessionData[key] = data;
 476   emit sessionDataChanged(key, data);
 477   emit sessionDataChanged(key);
 478 }
 479
 480 void Client::storeSessionData(const QString &key, const QVariant &data) {
 481   // Not sure if this is a good idea, but we'll try it anyway:
 482   // Calling this function only sends a signal to core. Data is stored upon reception of the update signal,
 483   // rather than immediately.
 484   emit instance()->sendSessionData(key, data);
 485 }
 486
 487 QVariant Client::retrieveSessionData(const QString &key, const QVariant &def) {
 488   if(instance()->sessionData.contains(key)) return instance()->sessionData[key];
 489   else return def;
 490 }
 491
 492 QStringList Client::sessionDataKeys() {
 493   return instance()->sessionData.keys();
 494 }
 495
 496 void Client::coreSocketError(QAbstractSocket::SocketError) {
 497   emit coreConnectionError(socket->errorString());
 498   socket->deleteLater();
 499 }
 500
 501 void Client::coreHasData() {
 502   QVariant item;
 503   if(SignalProxy::readDataFromDevice(socket, blockSize, item)) {
 504     emit recvPartialItem(1,1);
 505     QVariantMap msg = item.toMap();
 506     if (!msg["StartWizard"].toBool()) {
 507       recvCoreState(msg["Reply"]);
 508     } else {
 509       qWarning("Core not configured!");
 510       qDebug() << "Available storage providers: " << msg["StorageProviders"].toStringList();
 511       emit showConfigWizard(msg);
 512     }
 513     blockSize = 0;
 514     return;
 515   }
 516   if(blockSize > 0) {
 517     emit recvPartialItem(socket->bytesAvailable(), blockSize);
 518   }
 519 }
 520
 521 void Client::networkConnected(uint netid) {
 522   // TODO: create statusBuffer / switch to networkids
 523   //BufferInfo id = statusBufferInfo(net);
 524   //Buffer *b = buffer(id);
 525   //b->setActive(true);
 526
 527   NetworkInfo *netinfo = new NetworkInfo(netid, this);
 528   netinfo->setProxy(signalProxy());
 529   networkModel()->attachNetworkInfo(netinfo);
 530
 531   if(!isConnected()) {
 532     connect(netinfo, SIGNAL(initDone()), this, SLOT(updateCoreConnectionProgress()));
 533     connect(netinfo, SIGNAL(ircUserInitDone()), this, SLOT(updateCoreConnectionProgress()));
 534     connect(netinfo, SIGNAL(ircChannelInitDone()), this, SLOT(updateCoreConnectionProgress()));
 535   }
 536   connect(netinfo, SIGNAL(ircChannelAdded(QString)), this, SLOT(ircChannelAdded(QString)));
 537   connect(netinfo, SIGNAL(destroyed()), this, SLOT(networkInfoDestroyed()));
 538   _networkInfo[netid] = netinfo;
 539 }
 540
 541 void Client::networkDisconnected(uint networkid) {
 542   foreach(Buffer *buffer, buffers()) {
 543     if(buffer->bufferInfo().networkId() != networkid)
 544       continue;
 545
 546     //buffer->displayMsg(Message(bufferid, Message::Server, tr("Server disconnected."))); FIXME
 547     buffer->setActive(false);
 548   }
 549
 550   Q_ASSERT(networkInfo(networkid));
 551   if(!networkInfo(networkid)->initialized()) {
 552     qDebug() << "Network" << networkid << "disconnected while not yet initialized!";
 553     updateCoreConnectionProgress();
 554   }
 555 }
 556
 557 void Client::ircChannelAdded(QString chanName) {
 558   NetworkInfo *netInfo = qobject_cast<NetworkInfo*>(sender());
 559   Q_ASSERT(netInfo);
 560   Buffer *buf = buffer(bufferInfo(netInfo->networkName(), chanName));
 561   Q_ASSERT(buf);
 562   buf->setIrcChannel(netInfo->ircChannel(chanName));
 563
 564 }
 565
 566 void Client::updateBufferInfo(BufferInfo id) {
 567   buffer(id)->updateBufferInfo(id);
 568 }
 569
 570 void Client::bufferDestroyed() {
 571   Buffer *buffer = static_cast<Buffer *>(sender());
 572   uint bufferUid = buffer->uid();
 573   if(_buffers.contains(bufferUid))
 574     _buffers.remove(bufferUid);
 575 }
 576
 577 void Client::networkInfoDestroyed() {
 578   NetworkInfo *netinfo = static_cast<NetworkInfo *>(sender());
 579   uint networkId = netinfo->networkId();
 580   if(_networkInfo.contains(networkId))
 581     _networkInfo.remove(networkId);
 582 }
 583
 584 void Client::recvMessage(const Message &msg) {
 585   Buffer *b = buffer(msg.buffer());
 586
 587   Buffer::ActivityLevel level = Buffer::OtherActivity;
 588   if(msg.type() == Message::Plain || msg.type() == Message::Notice){
 589     level |= Buffer::NewMessage;
 590   }
 591   if(msg.flags() & Message::Highlight){
 592     level |= Buffer::Highlight;
 593   }
 594   emit bufferActivity(level, b);
 595
 596   b->appendMsg(msg);
 597 }
 598
 599 void Client::recvStatusMsg(QString /*net*/, QString /*msg*/) {
 600   //recvMessage(net, Message::server("", QString("[STATUS] %1").arg(msg)));
 601 }
 602
 603 void Client::recvBacklogData(BufferInfo id, QVariantList msgs, bool /*done*/) {
 604   Buffer *b = buffer(id);
 605   foreach(QVariant v, msgs) {
 606     Message msg = v.value<Message>();
 607     b->prependMsg(msg);
 608     if(!layoutQueue.contains(b)) layoutQueue.append(b);
 609   }
 610   if(layoutQueue.count() && !layoutTimer->isActive()) layoutTimer->start();
 611 }
 612
 613 void Client::layoutMsg() {
 614   if(layoutQueue.count()) {
 615     Buffer *b = layoutQueue.takeFirst();  // TODO make this the current buffer
 616     if(b->layoutMsg())
 617       layoutQueue.append(b);  // Buffer has more messages in its queue --> Round Robin
 618   }
 619
 620   if(!layoutQueue.count())
 621     layoutTimer->stop();
 622 }
 623
 624 AbstractUiMsg *Client::layoutMsg(const Message &msg) {
 625   return instance()->mainUi->layoutMsg(msg);
 626 }
 627
 628 void Client::userInput(BufferInfo id, QString msg) {
 629   emit sendInput(id, msg);
 630 }
 631