src/uisupport/bufferviewfilter.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 "bufferviewfilter.h"
  22
  23 #include <QCoreApplication>
  24
  25 #include "buffermodel.h"
  26 #include "client.h"
  27 #include "networkmodel.h"
  28
  29 #include "uisettings.h"
  30
  31 class CheckRemovalEvent : public QEvent {
  32 public:
  33   CheckRemovalEvent(const QModelIndex &source_index) : QEvent(QEvent::User), index(source_index) {};
  34   QPersistentModelIndex index;
  35 };
  36
  37 /*****************************************
  38 * The Filter for the Tree View
  39 *****************************************/
  40 BufferViewFilter::BufferViewFilter(QAbstractItemModel *model, BufferViewConfig *config)
  41   : QSortFilterProxyModel(model),
  42     _config(0)
  43 {
  44   setConfig(config);
  45   setSourceModel(model);
  46
  47   setDynamicSortFilter(true);
  48
  49   loadColors();
  50
  51   connect(this, SIGNAL(_dataChanged(const QModelIndex &, const QModelIndex &)),
  52           this, SLOT(_q_sourceDataChanged(QModelIndex,QModelIndex)));
  53 }
  54
  55 void BufferViewFilter::loadColors() {
  56   UiSettings s("QtUi/Colors");
  57   _FgColorInactiveActivity = s.value("inactiveActivityFG", QVariant(QColor(Qt::gray))).value<QColor>();
  58   _FgColorNoActivity = s.value("noActivityFG", QVariant(QColor(Qt::black))).value<QColor>();
  59   _FgColorHighlightActivity = s.value("highlightActivityFG", QVariant(QColor(Qt::magenta))).value<QColor>();
  60   _FgColorNewMessageActivity = s.value("newMessageActivityFG", QVariant(QColor(Qt::green))).value<QColor>();
  61   _FgColorOtherActivity = s.value("otherActivityFG", QVariant(QColor(Qt::darkGreen))).value<QColor>();
  62 }
  63
  64 void BufferViewFilter::setConfig(BufferViewConfig *config) {
  65   if(_config == config)
  66     return;
  67
  68   if(_config) {
  69     disconnect(_config, 0, this, 0);
  70   }
  71
  72   _config = config;
  73   if(config->isInitialized()) {
  74     configInitialized();
  75   } else {
  76     connect(config, SIGNAL(initDone()), this, SLOT(configInitialized()));
  77     invalidate();
  78   }
  79 }
  80
  81 void BufferViewFilter::configInitialized() {
  82   if(!config())
  83     return;
  84
  85   connect(config(), SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(invalidate()));
  86   connect(config(), SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(invalidate()));
  87   connect(config(), SIGNAL(addNewBuffersAutomaticallySet(bool)), this, SLOT(invalidate()));
  88   connect(config(), SIGNAL(sortAlphabeticallySet(bool)), this, SLOT(invalidate()));
  89   connect(config(), SIGNAL(hideInactiveBuffersSet(bool)), this, SLOT(invalidate()));
  90   connect(config(), SIGNAL(allowedBufferTypesSet(int)), this, SLOT(invalidate()));
  91   connect(config(), SIGNAL(minimumActivitySet(int)), this, SLOT(invalidate()));
  92   connect(config(), SIGNAL(bufferListSet()), this, SLOT(invalidate()));
  93   connect(config(), SIGNAL(bufferAdded(const BufferId &, int)), this, SLOT(invalidate()));
  94   connect(config(), SIGNAL(bufferMoved(const BufferId &, int)), this, SLOT(invalidate()));
  95   connect(config(), SIGNAL(bufferRemoved(const BufferId &)), this, SLOT(invalidate()));
  96
  97   disconnect(config(), SIGNAL(initDone()), this, SLOT(configInitialized()));
  98
  99   invalidate();
 100 }
 101
 102 Qt::ItemFlags BufferViewFilter::flags(const QModelIndex &index) const {
 103   Qt::ItemFlags flags = mapToSource(index).flags();
 104   if(_config && index == QModelIndex() || index.parent() == QModelIndex())
 105     flags |= Qt::ItemIsDropEnabled;
 106   return flags;
 107 }
 108
 109 bool BufferViewFilter::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) {
 110   if(!config() || !NetworkModel::mimeContainsBufferList(data))
 111     return QSortFilterProxyModel::dropMimeData(data, action, row, column, parent);
 112
 113   NetworkId droppedNetworkId;
 114   if(parent.data(NetworkModel::ItemTypeRole) == NetworkModel::NetworkItemType)
 115     droppedNetworkId = parent.data(NetworkModel::NetworkIdRole).value<NetworkId>();
 116
 117   QList< QPair<NetworkId, BufferId> > bufferList = NetworkModel::mimeDataToBufferList(data);
 118   BufferId bufferId;
 119   NetworkId networkId;
 120   int pos;
 121   for(int i = 0; i < bufferList.count(); i++) {
 122     networkId = bufferList[i].first;
 123     bufferId = bufferList[i].second;
 124     if(droppedNetworkId == networkId) {
 125       if(row < 0)
 126         row = 0;
 127       if(row < rowCount(parent)) {
 128         BufferId beforeBufferId = parent.child(row, 0).data(NetworkModel::BufferIdRole).value<BufferId>();
 129         pos = config()->bufferList().indexOf(beforeBufferId);
 130       } else {
 131         pos = config()->bufferList().count();
 132       }
 133
 134       if(config()->bufferList().contains(bufferId)) {
 135         if(config()->bufferList().indexOf(bufferId) < pos)
 136           pos--;
 137         config()->requestMoveBuffer(bufferId, pos);
 138       } else {
 139         config()->requestAddBuffer(bufferId, pos);
 140       }
 141
 142     } else {
 143       addBuffer(bufferId);
 144     }
 145   }
 146   return true;
 147 }
 148
 149 void BufferViewFilter::addBuffer(const BufferId &bufferId) const {
 150   if(!config() || config()->bufferList().contains(bufferId))
 151     return;
 152
 153   int pos = config()->bufferList().count();
 154   bool lt;
 155   for(int i = 0; i < config()->bufferList().count(); i++) {
 156     if(config() && config()->sortAlphabetically())
 157       lt = bufferIdLessThan(bufferId, config()->bufferList()[i]);
 158     else
 159       lt = bufferId < config()->bufferList()[i];
 160
 161     if(lt) {
 162       pos = i;
 163       break;
 164     }
 165   }
 166   config()->requestAddBuffer(bufferId, pos);
 167 }
 168
 169 bool BufferViewFilter::filterAcceptBuffer(const QModelIndex &source_bufferIndex) const {
 170   BufferId bufferId = sourceModel()->data(source_bufferIndex, NetworkModel::BufferIdRole).value<BufferId>();
 171   Q_ASSERT(bufferId.isValid());
 172   if(!config())
 173     return true;
 174
 175   int activityLevel = source_bufferIndex.data(NetworkModel::BufferActivityRole).toInt();
 176   if(config()->networkId().isValid() && config()->networkId() != sourceModel()->data(source_bufferIndex, NetworkModel::NetworkIdRole).value<NetworkId>())
 177     return false;
 178
 179   if(!(config()->allowedBufferTypes() & (BufferInfo::Type)source_bufferIndex.data(NetworkModel::BufferTypeRole).toInt()))
 180     return false;
 181
 182   if(config()->hideInactiveBuffers() && !source_bufferIndex.data(NetworkModel::ItemActiveRole).toBool())
 183     return false;
 184
 185   if(config()->minimumActivity() > activityLevel) {
 186     if(bufferId != Client::bufferModel()->standardSelectionModel()->currentIndex().data(NetworkModel::BufferIdRole).value<BufferId>())
 187       return false;
 188   }
 189
 190   if(config()->bufferList().contains(bufferId))
 191     return true;
 192
 193   if(config()->isInitialized() && !config()->removedBuffers().contains(bufferId)
 194      && (activityLevel > Buffer::OtherActivity || config()->addNewBuffersAutomatically())) {
 195     addBuffer(bufferId);
 196   }
 197
 198   return false;
 199 }
 200
 201 bool BufferViewFilter::filterAcceptNetwork(const QModelIndex &source_index) const {
 202   if(!config())
 203     return true;
 204
 205   if(!config()->networkId().isValid()) {
 206     return true;
 207   } else {
 208     return config()->networkId() == sourceModel()->data(source_index, NetworkModel::NetworkIdRole).value<NetworkId>();
 209   }
 210 }
 211
 212 bool BufferViewFilter::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const {
 213   QModelIndex child = sourceModel()->index(source_row, 0, source_parent);
 214
 215   if(!child.isValid()) {
 216     qWarning() << "filterAcceptsRow has been called with an invalid Child";
 217     return false;
 218   }
 219
 220   if(!source_parent.isValid())
 221     return filterAcceptNetwork(child);
 222   else
 223     return filterAcceptBuffer(child);
 224 }
 225
 226 bool BufferViewFilter::lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const {
 227   int itemType = sourceModel()->data(source_left, NetworkModel::ItemTypeRole).toInt();
 228   switch(itemType) {
 229   case NetworkModel::NetworkItemType:
 230     return networkLessThan(source_left, source_right);
 231   case NetworkModel::BufferItemType:
 232     return bufferLessThan(source_left, source_right);
 233   default:
 234     return QSortFilterProxyModel::lessThan(source_left, source_right);
 235   }
 236 }
 237
 238 bool BufferViewFilter::bufferLessThan(const QModelIndex &source_left, const QModelIndex &source_right) const {
 239   BufferId leftBufferId = sourceModel()->data(source_left, NetworkModel::BufferIdRole).value<BufferId>();
 240   BufferId rightBufferId = sourceModel()->data(source_right, NetworkModel::BufferIdRole).value<BufferId>();
 241   if(config()) {
 242     return config()->bufferList().indexOf(leftBufferId) < config()->bufferList().indexOf(rightBufferId);
 243   } else
 244     return bufferIdLessThan(leftBufferId, rightBufferId);
 245 }
 246
 247 bool BufferViewFilter::networkLessThan(const QModelIndex &source_left, const QModelIndex &source_right) const {
 248   NetworkId leftNetworkId = sourceModel()->data(source_left, NetworkModel::NetworkIdRole).value<NetworkId>();
 249   NetworkId rightNetworkId = sourceModel()->data(source_right, NetworkModel::NetworkIdRole).value<NetworkId>();
 250
 251   if(config() && config()->sortAlphabetically())
 252     return QSortFilterProxyModel::lessThan(source_left, source_right);
 253   else
 254     return leftNetworkId < rightNetworkId;
 255 }
 256
 257 QVariant BufferViewFilter::data(const QModelIndex &index, int role) const {
 258   if(role == Qt::ForegroundRole)
 259     return foreground(index);
 260   else
 261     return QSortFilterProxyModel::data(index, role);
 262 }
 263
 264 QVariant BufferViewFilter::foreground(const QModelIndex &index) const {
 265   if(!index.data(NetworkModel::ItemActiveRole).toBool())
 266     return _FgColorInactiveActivity;
 267
 268   Buffer::ActivityLevel activity = (Buffer::ActivityLevel)index.data(NetworkModel::BufferActivityRole).toInt();
 269
 270   if(activity & Buffer::Highlight)
 271     return _FgColorHighlightActivity;
 272   if(activity & Buffer::NewMessage)
 273     return _FgColorNewMessageActivity;
 274   if(activity & Buffer::OtherActivity)
 275     return _FgColorOtherActivity;
 276
 277   return _FgColorNoActivity;
 278 }
 279
 280 void BufferViewFilter::checkPreviousCurrentForRemoval(const QModelIndex &current, const QModelIndex &previous) {
 281   Q_UNUSED(current);
 282   if(previous.isValid())
 283     QCoreApplication::postEvent(this, new CheckRemovalEvent(previous));
 284 }
 285
 286 void BufferViewFilter::customEvent(QEvent *event) {
 287   if(event->type() != QEvent::User)
 288     return;
 289
 290   CheckRemovalEvent *removalEvent = static_cast<CheckRemovalEvent *>(event);
 291   checkItemForRemoval(removalEvent->index);
 292
 293   event->accept();
 294 }
 295
 296 void BufferViewFilter::checkItemsForRemoval(const QModelIndex &topLeft, const QModelIndex &bottomRight) {
 297   QModelIndex source_topLeft = mapToSource(topLeft);
 298   QModelIndex source_bottomRight = mapToSource(bottomRight);
 299   emit _dataChanged(source_topLeft, source_bottomRight);
 300 }
 301
 302 // ******************************
 303 //  Helper
 304 // ******************************
 305 bool bufferIdLessThan(const BufferId &left, const BufferId &right) {
 306   Q_CHECK_PTR(Client::networkModel());
 307   if(!Client::networkModel())
 308     return true;
 309
 310   QModelIndex leftIndex = Client::networkModel()->bufferIndex(left);
 311   QModelIndex rightIndex = Client::networkModel()->bufferIndex(right);
 312
 313   int leftType = Client::networkModel()->data(leftIndex, NetworkModel::BufferTypeRole).toInt();
 314   int rightType = Client::networkModel()->data(rightIndex, NetworkModel::BufferTypeRole).toInt();
 315
 316   if(leftType != rightType)
 317     return leftType < rightType;
 318   else
 319     return QString::compare(Client::networkModel()->data(leftIndex, Qt::DisplayRole).toString(), Client::networkModel()->data(rightIndex, Qt::DisplayRole).toString(), Qt::CaseInsensitive) < 0;
 320 }
 321