src/uisupport/bufferviewfilter.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2013 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 "bufferviewfilter.h"
  22
  23 #include <QApplication>
  24 #include <QPalette>
  25 #include <QBrush>
  26
  27 #include "bufferinfo.h"
  28 #include "buffermodel.h"
  29 #include "buffersettings.h"
  30 #include "client.h"
  31 #include "clientbufferviewconfig.h"
  32 #include "graphicalui.h"
  33 #include "iconloader.h"
  34 #include "networkmodel.h"
  35 #include "uistyle.h"
  36
  37 class CheckRemovalEvent : public QEvent
  38 {
  39 public:
  40     CheckRemovalEvent(const QModelIndex &source_index) : QEvent(QEvent::User), index(source_index) {};
  41     QPersistentModelIndex index;
  42 };
  43
  44
  45 /*****************************************
  46 * The Filter for the Tree View
  47 *****************************************/
  48 BufferViewFilter::BufferViewFilter(QAbstractItemModel *model, BufferViewConfig *config)
  49     : QSortFilterProxyModel(model),
  50     _config(0),
  51     _sortOrder(Qt::AscendingOrder),
  52     _showServerQueries(false),
  53     _editMode(false),
  54     _enableEditMode(tr("Show / Hide Chats"), this)
  55 {
  56     setConfig(config);
  57     setSourceModel(model);
  58
  59     setDynamicSortFilter(true);
  60
  61     connect(this, SIGNAL(_dataChanged(const QModelIndex &, const QModelIndex &)),
  62         this, SLOT(_q_sourceDataChanged(QModelIndex, QModelIndex)));
  63
  64     _enableEditMode.setCheckable(true);
  65     _enableEditMode.setChecked(_editMode);
  66     connect(&_enableEditMode, SIGNAL(toggled(bool)), this, SLOT(enableEditMode(bool)));
  67
  68     BufferSettings defaultSettings;
  69     defaultSettings.notify("ServerNoticesTarget", this, SLOT(showServerQueriesChanged()));
  70     showServerQueriesChanged();
  71 }
  72
  73
  74 void BufferViewFilter::setConfig(BufferViewConfig *config)
  75 {
  76     if (_config == config)
  77         return;
  78
  79     if (_config) {
  80         disconnect(_config, 0, this, 0);
  81     }
  82
  83     _config = config;
  84
  85     if (!config) {
  86         invalidate();
  87         setObjectName("");
  88         return;
  89     }
  90
  91     if (config->isInitialized()) {
  92         configInitialized();
  93     }
  94     else {
  95         // we use a queued connection here since manipulating the connection list of a sending object
  96         // doesn't seem to be such a good idea while executing a connected slots.
  97         connect(config, SIGNAL(initDone()), this, SLOT(configInitialized()), Qt::QueuedConnection);
  98         invalidate();
  99     }
 100 }
 101
 102
 103 void BufferViewFilter::configInitialized()
 104 {
 105     if (!config())
 106         return;
 107
 108 //   connect(config(), SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(invalidate()));
 109     connect(config(), SIGNAL(configChanged()), this, SLOT(invalidate()));
 110 //   connect(config(), SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(invalidate()));
 111 //   connect(config(), SIGNAL(addNewBuffersAutomaticallySet(bool)), this, SLOT(invalidate()));
 112 //   connect(config(), SIGNAL(sortAlphabeticallySet(bool)), this, SLOT(invalidate()));
 113 //   connect(config(), SIGNAL(hideInactiveBuffersSet(bool)), this, SLOT(invalidate()));
 114 //   connect(config(), SIGNAL(allowedBufferTypesSet(int)), this, SLOT(invalidate()));
 115 //   connect(config(), SIGNAL(minimumActivitySet(int)), this, SLOT(invalidate()));
 116 //   connect(config(), SIGNAL(bufferListSet()), this, SLOT(invalidate()));
 117 //   connect(config(), SIGNAL(bufferAdded(const BufferId &, int)), this, SLOT(invalidate()));
 118 //   connect(config(), SIGNAL(bufferMoved(const BufferId &, int)), this, SLOT(invalidate()));
 119 //   connect(config(), SIGNAL(bufferRemoved(const BufferId &)), this, SLOT(invalidate()));
 120 //   connect(config(), SIGNAL(bufferPermanentlyRemoved(const BufferId &)), this, SLOT(invalidate()));
 121
 122     disconnect(config(), SIGNAL(initDone()), this, SLOT(configInitialized()));
 123
 124     setObjectName(config()->bufferViewName());
 125
 126     invalidate();
 127     emit configChanged();
 128 }
 129
 130
 131 void BufferViewFilter::showServerQueriesChanged()
 132 {
 133     BufferSettings bufferSettings;
 134
 135     bool showQueries = (bufferSettings.serverNoticesTarget() & BufferSettings::DefaultBuffer);
 136     if (_showServerQueries != showQueries) {
 137         _showServerQueries = showQueries;
 138         invalidate();
 139     }
 140 }
 141
 142
 143 QList<QAction *> BufferViewFilter::actions(const QModelIndex &index)
 144 {
 145     Q_UNUSED(index)
 146     QList<QAction *> actionList;
 147     actionList << &_enableEditMode;
 148     return actionList;
 149 }
 150
 151
 152 void BufferViewFilter::enableEditMode(bool enable)
 153 {
 154     if (_editMode == enable) {
 155         return;
 156     }
 157     _editMode = enable;
 158
 159     if (!config())
 160         return;
 161
 162     if (enable == false) {
 163         addBuffers(QList<BufferId>::fromSet(_toAdd));
 164         QSet<BufferId>::const_iterator iter;
 165         for (iter = _toTempRemove.constBegin(); iter != _toTempRemove.constEnd(); iter++) {
 166             if (config()->temporarilyRemovedBuffers().contains(*iter))
 167                 continue;
 168             config()->requestRemoveBuffer(*iter);
 169         }
 170         for (iter = _toRemove.constBegin(); iter != _toRemove.constEnd(); iter++) {
 171             if (config()->removedBuffers().contains(*iter))
 172                 continue;
 173             config()->requestRemoveBufferPermanently(*iter);
 174         }
 175     }
 176     _toAdd.clear();
 177     _toTempRemove.clear();
 178     _toRemove.clear();
 179
 180     invalidate();
 181 }
 182
 183
 184 Qt::ItemFlags BufferViewFilter::flags(const QModelIndex &index) const
 185 {
 186     QModelIndex source_index = mapToSource(index);
 187     Qt::ItemFlags flags = sourceModel()->flags(source_index);
 188     if (config()) {
 189         NetworkModel::ItemType itemType = (NetworkModel::ItemType)sourceModel()->data(source_index, NetworkModel::ItemTypeRole).toInt();
 190         BufferInfo::Type bufferType = (BufferInfo::Type)sourceModel()->data(source_index, NetworkModel::BufferTypeRole).toInt();
 191         if (source_index == QModelIndex() || itemType == NetworkModel::NetworkItemType) {
 192             flags |= Qt::ItemIsDropEnabled;
 193         }
 194         else if (_editMode) {
 195             flags |= Qt::ItemIsUserCheckable | Qt::ItemIsTristate;
 196         }
 197
 198         // prohibit dragging of most items. and most drop places
 199         // only query to query is allowed for merging
 200         if (bufferType != BufferInfo::QueryBuffer) {
 201             ClientBufferViewConfig *clientConf = qobject_cast<ClientBufferViewConfig *>(config());
 202             if (clientConf && clientConf->isLocked()) {
 203                 flags &= ~(Qt::ItemIsDropEnabled | Qt::ItemIsDragEnabled);
 204             }
 205         }
 206     }
 207     return flags;
 208 }
 209
 210
 211 bool BufferViewFilter::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
 212 {
 213     if (!config() || !NetworkModel::mimeContainsBufferList(data))
 214         return QSortFilterProxyModel::dropMimeData(data, action, row, column, parent);
 215
 216     NetworkId droppedNetworkId;
 217     QModelIndex source_parent = mapToSource(parent);
 218     if (sourceModel()->data(source_parent, NetworkModel::ItemTypeRole) == NetworkModel::NetworkItemType)
 219         droppedNetworkId = sourceModel()->data(source_parent, NetworkModel::NetworkIdRole).value<NetworkId>();
 220
 221     QList<QPair<NetworkId, BufferId> > bufferList = NetworkModel::mimeDataToBufferList(data);
 222     BufferId bufferId;
 223     NetworkId networkId;
 224     int pos;
 225     for (int i = 0; i < bufferList.count(); i++) {
 226         networkId = bufferList[i].first;
 227         bufferId = bufferList[i].second;
 228         if (droppedNetworkId == networkId) {
 229             if (row < 0)
 230                 row = 0;
 231
 232             if (row < rowCount(parent)) {
 233                 QModelIndex source_child = mapToSource(index(row, 0, parent));
 234                 BufferId beforeBufferId = sourceModel()->data(source_child, NetworkModel::BufferIdRole).value<BufferId>();
 235                 pos = config()->bufferList().indexOf(beforeBufferId);
 236                 if (_sortOrder == Qt::DescendingOrder)
 237                     pos++;
 238             }
 239             else {
 240                 if (_sortOrder == Qt::AscendingOrder)
 241                     pos = config()->bufferList().count();
 242                 else
 243                     pos = 0;
 244             }
 245
 246             if (config()->bufferList().contains(bufferId) && !config()->sortAlphabetically()) {
 247                 if (config()->bufferList().indexOf(bufferId) < pos)
 248                     pos--;
 249                 ClientBufferViewConfig *clientConf = qobject_cast<ClientBufferViewConfig *>(config());
 250                 if (!clientConf || !clientConf->isLocked())
 251                     config()->requestMoveBuffer(bufferId, pos);
 252             }
 253             else {
 254                 config()->requestAddBuffer(bufferId, pos);
 255             }
 256         }
 257         else {
 258             addBuffer(bufferId);
 259         }
 260     }
 261     return true;
 262 }
 263
 264
 265 void BufferViewFilter::sort(int column, Qt::SortOrder order)
 266 {
 267     _sortOrder = order;
 268     QSortFilterProxyModel::sort(column, order);
 269 }
 270
 271
 272 void BufferViewFilter::addBuffer(const BufferId &bufferId) const
 273 {
 274     if (!config() || config()->bufferList().contains(bufferId))
 275         return;
 276
 277     int pos = config()->bufferList().count();
 278     bool lt;
 279     for (int i = 0; i < config()->bufferList().count(); i++) {
 280         if (config() && config()->sortAlphabetically())
 281             lt = bufferIdLessThan(bufferId, config()->bufferList()[i]);
 282         else
 283             lt = bufferId < config()->bufferList()[i];
 284
 285         if (lt) {
 286             pos = i;
 287             break;
 288         }
 289     }
 290     config()->requestAddBuffer(bufferId, pos);
 291 }
 292
 293
 294 void BufferViewFilter::addBuffers(const QList<BufferId> &bufferIds) const
 295 {
 296     if (!config())
 297         return;
 298
 299     QList<BufferId> bufferList = config()->bufferList();
 300     foreach(BufferId bufferId, bufferIds) {
 301         if (bufferList.contains(bufferId))
 302             continue;
 303
 304         int pos = bufferList.count();
 305         bool lt;
 306         for (int i = 0; i < bufferList.count(); i++) {
 307             if (config() && config()->sortAlphabetically())
 308                 lt = bufferIdLessThan(bufferId, bufferList[i]);
 309             else
 310                 lt = bufferId < config()->bufferList()[i];
 311
 312             if (lt) {
 313                 pos = i;
 314                 bufferList.insert(pos, bufferId);
 315                 break;
 316             }
 317         }
 318         config()->requestAddBuffer(bufferId, pos);
 319     }
 320 }
 321
 322
 323 bool BufferViewFilter::filterAcceptBuffer(const QModelIndex &source_bufferIndex) const
 324 {
 325     // no config -> "all buffers" -> accept everything
 326     if (!config())
 327         return true;
 328
 329     BufferId bufferId = sourceModel()->data(source_bufferIndex, NetworkModel::BufferIdRole).value<BufferId>();
 330     Q_ASSERT(bufferId.isValid());
 331
 332     int activityLevel = sourceModel()->data(source_bufferIndex, NetworkModel::BufferActivityRole).toInt();
 333
 334     if (!config()->bufferList().contains(bufferId) && !_editMode) {
 335         // add the buffer if...
 336         if (config()->isInitialized()
 337             && !config()->removedBuffers().contains(bufferId) // it hasn't been manually removed and either
 338             && ((config()->addNewBuffersAutomatically() && !config()->temporarilyRemovedBuffers().contains(bufferId)) // is totally unknown to us (a new buffer)...
 339                 || (config()->temporarilyRemovedBuffers().contains(bufferId) && activityLevel > BufferInfo::OtherActivity))) { // or was just temporarily hidden and has a new message waiting for us.
 340             addBuffer(bufferId);
 341         }
 342         // note: adding the buffer to the valid list does not temper with the following filters ("show only channels" and stuff)
 343         return false;
 344     }
 345
 346     if (config()->networkId().isValid() && config()->networkId() != sourceModel()->data(source_bufferIndex, NetworkModel::NetworkIdRole).value<NetworkId>())
 347         return false;
 348
 349     int allowedBufferTypes = config()->allowedBufferTypes();
 350     if (!config()->networkId().isValid())
 351         allowedBufferTypes &= ~BufferInfo::StatusBuffer;
 352     int bufferType = sourceModel()->data(source_bufferIndex, NetworkModel::BufferTypeRole).toInt();
 353     if (!(allowedBufferTypes & bufferType))
 354         return false;
 355
 356     if (bufferType & BufferInfo::QueryBuffer && !_showServerQueries && sourceModel()->data(source_bufferIndex, Qt::DisplayRole).toString().contains('.')) {
 357         return false;
 358     }
 359
 360     // the following dynamic filters may not trigger if the buffer is currently selected.
 361     QModelIndex currentIndex = Client::bufferModel()->standardSelectionModel()->currentIndex();
 362     if (bufferId == Client::bufferModel()->data(currentIndex, NetworkModel::BufferIdRole).value<BufferId>())
 363         return true;
 364
 365     if (config()->hideInactiveBuffers() && !sourceModel()->data(source_bufferIndex, NetworkModel::ItemActiveRole).toBool() && activityLevel <= BufferInfo::OtherActivity)
 366         return false;
 367
 368     if (config()->minimumActivity() > activityLevel)
 369         return false;
 370
 371     return true;
 372 }
 373
 374
 375 bool BufferViewFilter::filterAcceptNetwork(const QModelIndex &source_index) const
 376 {
 377     if (!config())
 378         return true;
 379
 380     if (!config()->networkId().isValid()) {
 381         return true;
 382     }
 383     else {
 384         return config()->networkId() == sourceModel()->data(source_index, NetworkModel::NetworkIdRole).value<NetworkId>();
 385     }
 386 }
 387
 388
 389 bool BufferViewFilter::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
 390 {
 391     QModelIndex child = sourceModel()->index(source_row, 0, source_parent);
 392
 393     if (!child.isValid()) {
 394         qWarning() << "filterAcceptsRow has been called with an invalid Child";
 395         return false;
 396     }
 397
 398     NetworkModel::ItemType childType = (NetworkModel::ItemType)sourceModel()->data(child, NetworkModel::ItemTypeRole).toInt();
 399     switch (childType) {
 400     case NetworkModel::NetworkItemType:
 401         return filterAcceptNetwork(child);
 402     case NetworkModel::BufferItemType:
 403         return filterAcceptBuffer(child);
 404     default:
 405         return false;
 406     }
 407 }
 408
 409
 410 bool BufferViewFilter::lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
 411 {
 412     int leftItemType = sourceModel()->data(source_left, NetworkModel::ItemTypeRole).toInt();
 413     int rightItemType = sourceModel()->data(source_right, NetworkModel::ItemTypeRole).toInt();
 414     int itemType = leftItemType & rightItemType;
 415     switch (itemType) {
 416     case NetworkModel::NetworkItemType:
 417         return networkLessThan(source_left, source_right);
 418     case NetworkModel::BufferItemType:
 419         return bufferLessThan(source_left, source_right);
 420     default:
 421         return QSortFilterProxyModel::lessThan(source_left, source_right);
 422     }
 423 }
 424
 425
 426 bool BufferViewFilter::bufferLessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
 427 {
 428     BufferId leftBufferId = sourceModel()->data(source_left, NetworkModel::BufferIdRole).value<BufferId>();
 429     BufferId rightBufferId = sourceModel()->data(source_right, NetworkModel::BufferIdRole).value<BufferId>();
 430     if (config()) {
 431         int leftPos = config()->bufferList().indexOf(leftBufferId);
 432         int rightPos = config()->bufferList().indexOf(rightBufferId);
 433         if (leftPos == -1 && rightPos == -1)
 434             return QSortFilterProxyModel::lessThan(source_left, source_right);
 435         if (leftPos == -1 || rightPos == -1)
 436             return !(leftPos < rightPos);
 437         return leftPos < rightPos;
 438     }
 439     else
 440         return bufferIdLessThan(leftBufferId, rightBufferId);
 441 }
 442
 443
 444 bool BufferViewFilter::networkLessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
 445 {
 446     // NetworkId leftNetworkId = sourceModel()->data(source_left, NetworkModel::NetworkIdRole).value<NetworkId>();
 447     // NetworkId rightNetworkId = sourceModel()->data(source_right, NetworkModel::NetworkIdRole).value<NetworkId>();
 448
 449     return QSortFilterProxyModel::lessThan(source_left, source_right);
 450 }
 451
 452
 453 QVariant BufferViewFilter::data(const QModelIndex &index, int role) const
 454 {
 455     switch (role) {
 456     case Qt::FontRole:
 457     case Qt::ForegroundRole:
 458     case Qt::BackgroundRole:
 459     case Qt::DecorationRole:
 460         if ((config() && config()->disableDecoration()))
 461             return QVariant();
 462         return GraphicalUi::uiStyle()->bufferViewItemData(mapToSource(index), role);
 463     case Qt::CheckStateRole:
 464         return checkedState(index);
 465     default:
 466         return QSortFilterProxyModel::data(index, role);
 467     }
 468 }
 469
 470
 471 QVariant BufferViewFilter::checkedState(const QModelIndex &index) const
 472 {
 473     if (!_editMode || !config())
 474         return QVariant();
 475
 476     QModelIndex source_index = mapToSource(index);
 477     if (source_index == QModelIndex() || sourceModel()->data(source_index, NetworkModel::ItemTypeRole) == NetworkModel::NetworkItemType)
 478         return QVariant();
 479
 480     BufferId bufferId = sourceModel()->data(source_index, NetworkModel::BufferIdRole).value<BufferId>();
 481     if (_toAdd.contains(bufferId))
 482         return Qt::Checked;
 483
 484     if (_toTempRemove.contains(bufferId))
 485         return Qt::PartiallyChecked;
 486
 487     if (_toRemove.contains(bufferId))
 488         return Qt::Unchecked;
 489
 490     if (config()->bufferList().contains(bufferId))
 491         return Qt::Checked;
 492
 493     if (config()->temporarilyRemovedBuffers().contains(bufferId))
 494         return Qt::PartiallyChecked;
 495
 496     return Qt::Unchecked;
 497 }
 498
 499
 500 bool BufferViewFilter::setData(const QModelIndex &index, const QVariant &value, int role)
 501 {
 502     switch (role) {
 503     case Qt::CheckStateRole:
 504         return setCheckedState(index, Qt::CheckState(value.toInt()));
 505     default:
 506         return QSortFilterProxyModel::setData(index, value, role);
 507     }
 508 }
 509
 510
 511 bool BufferViewFilter::setCheckedState(const QModelIndex &index, Qt::CheckState state)
 512 {
 513     QModelIndex source_index = mapToSource(index);
 514     BufferId bufferId = sourceModel()->data(source_index, NetworkModel::BufferIdRole).value<BufferId>();
 515     if (!bufferId.isValid())
 516         return false;
 517
 518     switch (state) {
 519     case Qt::Unchecked:
 520         _toAdd.remove(bufferId);
 521         _toTempRemove.remove(bufferId);
 522         _toRemove << bufferId;
 523         break;
 524     case Qt::PartiallyChecked:
 525         _toAdd.remove(bufferId);
 526         _toTempRemove << bufferId;
 527         _toRemove.remove(bufferId);
 528         break;
 529     case Qt::Checked:
 530         _toAdd << bufferId;
 531         _toTempRemove.remove(bufferId);
 532         _toRemove.remove(bufferId);
 533         break;
 534     default:
 535         return false;
 536     }
 537     emit dataChanged(index, index);
 538     return true;
 539 }
 540
 541
 542 void BufferViewFilter::checkPreviousCurrentForRemoval(const QModelIndex &current, const QModelIndex &previous)
 543 {
 544     Q_UNUSED(current);
 545     if (previous.isValid())
 546         QCoreApplication::postEvent(this, new CheckRemovalEvent(previous));
 547 }
 548
 549
 550 void BufferViewFilter::customEvent(QEvent *event)
 551 {
 552     if (event->type() != QEvent::User)
 553         return;
 554
 555     CheckRemovalEvent *removalEvent = static_cast<CheckRemovalEvent *>(event);
 556     checkItemForRemoval(removalEvent->index);
 557
 558     event->accept();
 559 }
 560
 561
 562 void BufferViewFilter::checkItemsForRemoval(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 563 {
 564     QModelIndex source_topLeft = mapToSource(topLeft);
 565     QModelIndex source_bottomRight = mapToSource(bottomRight);
 566     emit _dataChanged(source_topLeft, source_bottomRight);
 567 }
 568
 569
 570 bool BufferViewFilter::bufferIdLessThan(const BufferId &left, const BufferId &right)
 571 {
 572     Q_CHECK_PTR(Client::networkModel());
 573     if (!Client::networkModel())
 574         return true;
 575
 576     QModelIndex leftIndex = Client::networkModel()->bufferIndex(left);
 577     QModelIndex rightIndex = Client::networkModel()->bufferIndex(right);
 578
 579     int leftType = Client::networkModel()->data(leftIndex, NetworkModel::BufferTypeRole).toInt();
 580     int rightType = Client::networkModel()->data(rightIndex, NetworkModel::BufferTypeRole).toInt();
 581
 582     if (leftType != rightType)
 583         return leftType < rightType;
 584     else
 585         return QString::compare(Client::networkModel()->data(leftIndex, Qt::DisplayRole).toString(), Client::networkModel()->data(rightIndex, Qt::DisplayRole).toString(), Qt::CaseInsensitive) < 0;
 586 }