src/uisupport/bufferview.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 "bufferview.h"
  22
  23 #include <QApplication>
  24 #include <QAction>
  25 #include <QFlags>
  26 #include <QHeaderView>
  27 #include <QLineEdit>
  28 #include <QMenu>
  29 #include <QMessageBox>
  30 #include <QSet>
  31 #include <QVBoxLayout>
  32
  33 #include "action.h"
  34 #include "buffermodel.h"
  35 #include "bufferviewfilter.h"
  36 #include "buffersettings.h"
  37 #include "buffersyncer.h"
  38 #include "client.h"
  39 #include "contextmenuactionprovider.h"
  40 #include "graphicalui.h"
  41 #include "network.h"
  42 #include "networkmodel.h"
  43 #include "contextmenuactionprovider.h"
  44
  45 /*****************************************
  46 * The TreeView showing the Buffers
  47 *****************************************/
  48 // Please be carefull when reimplementing methods which are used to inform the view about changes to the data
  49 // to be on the safe side: call QTreeView's method aswell (or TreeViewTouch's)
  50 BufferView::BufferView(QWidget *parent)
  51     : TreeViewTouch(parent)
  52 {
  53     connect(this, SIGNAL(collapsed(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
  54     connect(this, SIGNAL(expanded(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
  55
  56     setSelectionMode(QAbstractItemView::ExtendedSelection);
  57
  58     QAbstractItemDelegate *oldDelegate = itemDelegate();
  59     BufferViewDelegate *tristateDelegate = new BufferViewDelegate(this);
  60     setItemDelegate(tristateDelegate);
  61     delete oldDelegate;
  62 }
  63
  64
  65 void BufferView::init()
  66 {
  67     header()->setContextMenuPolicy(Qt::ActionsContextMenu);
  68     hideColumn(1);
  69     hideColumn(2);
  70     setIndentation(10);
  71
  72     // New entries will be expanded automatically when added; no need to call expandAll()
  73
  74     header()->hide(); // nobody seems to use this anyway
  75
  76     // breaks with Qt 4.8
  77     if (QString("4.8.0") > qVersion()) // FIXME breaks with Qt versions >= 4.10!
  78         setAnimated(true);
  79
  80     // FIXME This is to workaround bug #663
  81     setUniformRowHeights(true);
  82
  83 #ifndef QT_NO_DRAGANDDROP
  84     setDragEnabled(true);
  85     setAcceptDrops(true);
  86     setDropIndicatorShown(true);
  87 #endif
  88
  89     setSortingEnabled(true);
  90     sortByColumn(0, Qt::AscendingOrder);
  91
  92     // activated() fails on X11 and Qtopia at least
  93 #if defined Q_WS_QWS || defined Q_WS_X11
  94     disconnect(this, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
  95     connect(this, SIGNAL(doubleClicked(QModelIndex)), SLOT(joinChannel(QModelIndex)));
  96 #else
  97     // afaik this is better on Mac and Windows
  98     disconnect(this, SIGNAL(activated(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
  99     connect(this, SIGNAL(activated(QModelIndex)), SLOT(joinChannel(QModelIndex)));
 100 #endif
 101 }
 102
 103
 104 void BufferView::setModel(QAbstractItemModel *model)
 105 {
 106     delete selectionModel();
 107
 108     TreeViewTouch::setModel(model);
 109     init();
 110     // remove old Actions
 111     QList<QAction *> oldactions = header()->actions();
 112     foreach(QAction *action, oldactions) {
 113         header()->removeAction(action);
 114         action->deleteLater();
 115     }
 116
 117     if (!model)
 118         return;
 119
 120     QString sectionName;
 121     QAction *showSection;
 122     for (int i = 1; i < model->columnCount(); i++) {
 123         sectionName = (model->headerData(i, Qt::Horizontal, Qt::DisplayRole)).toString();
 124         showSection = new QAction(sectionName, header());
 125         showSection->setCheckable(true);
 126         showSection->setChecked(!isColumnHidden(i));
 127         showSection->setProperty("column", i);
 128         connect(showSection, SIGNAL(toggled(bool)), this, SLOT(toggleHeader(bool)));
 129         header()->addAction(showSection);
 130     }
 131
 132     connect(model, SIGNAL(layoutChanged()), this, SLOT(on_layoutChanged()));
 133
 134     // Make sure collapsation is correct after setting a model
 135     // This might not be needed here, only in BufferView::setFilteredModel().  If issues arise, just
 136     // move down to setFilteredModel (which calls this function).
 137     setExpandedState();
 138 }
 139
 140
 141 void BufferView::setFilteredModel(QAbstractItemModel *model_, BufferViewConfig *config)
 142 {
 143     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 144     if (filter) {
 145         filter->setConfig(config);
 146         setConfig(config);
 147         return;
 148     }
 149
 150     if (model()) {
 151         disconnect(this, 0, model(), 0);
 152         disconnect(model(), 0, this, 0);
 153     }
 154
 155     if (!model_) {
 156         setModel(model_);
 157     }
 158     else {
 159         BufferViewFilter *filter = new BufferViewFilter(model_, config);
 160         setModel(filter);
 161         connect(filter, SIGNAL(configChanged()), this, SLOT(on_configChanged()));
 162     }
 163     setConfig(config);
 164 }
 165
 166
 167 void BufferView::setConfig(BufferViewConfig *config)
 168 {
 169     if (_config == config)
 170         return;
 171
 172     if (_config) {
 173         disconnect(_config, 0, this, 0);
 174     }
 175
 176     _config = config;
 177     if (config) {
 178         connect(config, SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(setRootIndexForNetworkId(const NetworkId &)));
 179         setRootIndexForNetworkId(config->networkId());
 180     }
 181     else {
 182         setIndentation(10);
 183         setRootIndex(QModelIndex());
 184     }
 185 }
 186
 187
 188 void BufferView::setRootIndexForNetworkId(const NetworkId &networkId)
 189 {
 190     if (!networkId.isValid() || !model()) {
 191         setIndentation(10);
 192         setRootIndex(QModelIndex());
 193     }
 194     else {
 195         setIndentation(5);
 196         int networkCount = model()->rowCount();
 197         QModelIndex child;
 198         for (int i = 0; i < networkCount; i++) {
 199             child = model()->index(i, 0);
 200             if (networkId == model()->data(child, NetworkModel::NetworkIdRole).value<NetworkId>())
 201                 setRootIndex(child);
 202         }
 203     }
 204 }
 205
 206
 207 void BufferView::joinChannel(const QModelIndex &index)
 208 {
 209     BufferInfo::Type bufferType = (BufferInfo::Type)index.data(NetworkModel::BufferTypeRole).value<int>();
 210
 211     if (bufferType != BufferInfo::ChannelBuffer)
 212         return;
 213
 214     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
 215
 216     Client::userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
 217 }
 218
 219
 220 void BufferView::keyPressEvent(QKeyEvent *event)
 221 {
 222     if (event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
 223         event->accept();
 224         removeSelectedBuffers();
 225     }
 226     TreeViewTouch::keyPressEvent(event);
 227 }
 228
 229
 230 void BufferView::dropEvent(QDropEvent *event)
 231 {
 232     QModelIndex index = indexAt(event->pos());
 233
 234     QRect indexRect = visualRect(index);
 235     QPoint cursorPos = event->pos();
 236
 237     // check if we're really _on_ the item and not indicating a move to just above or below the item
 238     // Magic margin number for this is from QAbstractItemViewPrivate::position()
 239     const int margin = 2;
 240     if (cursorPos.y() - indexRect.top() < margin
 241         || indexRect.bottom() - cursorPos.y() < margin)
 242         return TreeViewTouch::dropEvent(event);
 243
 244     // If more than one buffer was being dragged, treat this as a rearrangement instead of a merge request
 245     QList<QPair<NetworkId, BufferId> > bufferList = Client::networkModel()->mimeDataToBufferList(event->mimeData());
 246     if (bufferList.count() != 1)
 247         return TreeViewTouch::dropEvent(event);
 248
 249     // Get the Buffer ID of the buffer that was being dragged
 250     BufferId bufferId2 = bufferList[0].second;
 251
 252     // Get the Buffer ID of the target buffer
 253     BufferId bufferId1 = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 254
 255     // If the source and target are the same buffer, this was an aborted rearrangement
 256     if (bufferId1 == bufferId2)
 257         return TreeViewTouch::dropEvent(event);
 258
 259     // Get index of buffer that was being dragged
 260     QModelIndex index2 = Client::networkModel()->bufferIndex(bufferId2);
 261
 262     // If the buffer being dragged is a channel and we're still joined to it, treat this as a rearrangement
 263     // This prevents us from being joined to a channel with no associated UI elements
 264     if (index2.data(NetworkModel::BufferTypeRole) == BufferInfo::ChannelBuffer && index2.data(NetworkModel::ItemActiveRole) == true)
 265         return TreeViewTouch::dropEvent(event);
 266
 267     //If the source buffer is not mergeable(AKA not a Channel and not a Query), try rearranging instead
 268     if (index2.data(NetworkModel::BufferTypeRole) != BufferInfo::ChannelBuffer && index2.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
 269         return TreeViewTouch::dropEvent(event);
 270
 271     // If the target buffer is not mergeable(AKA not a Channel and not a Query), try rearranging instead
 272     if (index.data(NetworkModel::BufferTypeRole) != BufferInfo::ChannelBuffer && index.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
 273         return TreeViewTouch::dropEvent(event);
 274
 275     // Confirm that the user really wants to merge the buffers before doing so
 276     int res = QMessageBox::question(0, tr("Merge buffers permanently?"),
 277         tr("Do you want to merge the buffer \"%1\" permanently into buffer \"%2\"?\n This cannot be reversed!").arg(Client::networkModel()->bufferName(bufferId2)).arg(Client::networkModel()->bufferName(bufferId1)),
 278         QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
 279     if (res == QMessageBox::Yes) {
 280         Client::mergeBuffersPermanently(bufferId1, bufferId2);
 281     }
 282 }
 283
 284
 285 void BufferView::removeSelectedBuffers(bool permanently)
 286 {
 287     if (!config())
 288         return;
 289
 290     BufferId bufferId;
 291     QSet<BufferId> removedRows;
 292     foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
 293         if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 294             continue;
 295
 296         bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 297         if (removedRows.contains(bufferId))
 298             continue;
 299
 300         removedRows << bufferId;
 301     }
 302
 303     foreach(BufferId bufferId, removedRows) {
 304         if (permanently)
 305             config()->requestRemoveBufferPermanently(bufferId);
 306         else
 307             config()->requestRemoveBuffer(bufferId);
 308     }
 309 }
 310
 311
 312 void BufferView::rowsInserted(const QModelIndex &parent, int start, int end)
 313 {
 314     TreeViewTouch::rowsInserted(parent, start, end);
 315
 316     // ensure that newly inserted network nodes are expanded per default
 317     if (parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 318         return;
 319
 320     setExpandedState(parent);
 321 }
 322
 323
 324 void BufferView::on_layoutChanged()
 325 {
 326     int numNets = model()->rowCount(QModelIndex());
 327     for (int row = 0; row < numNets; row++) {
 328         QModelIndex networkIdx = model()->index(row, 0, QModelIndex());
 329         setExpandedState(networkIdx);
 330     }
 331 }
 332
 333
 334 void BufferView::on_configChanged()
 335 {
 336     Q_ASSERT(model());
 337
 338     // Expand/collapse as needed
 339     setExpandedState();
 340
 341     if (config()) {
 342         // update selection to current one
 343         Client::bufferModel()->synchronizeView(this);
 344     }
 345 }
 346
 347
 348 void BufferView::setExpandedState()
 349 {
 350     // Expand all active networks, collapse inactive ones... unless manually changed
 351     QModelIndex networkIdx;
 352     NetworkId networkId;
 353     for (int row = 0; row < model()->rowCount(); row++) {
 354         networkIdx = model()->index(row, 0);
 355         if (model()->rowCount(networkIdx) ==  0)
 356             continue;
 357
 358         networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 359         if (!networkId.isValid())
 360             continue;
 361
 362         setExpandedState(networkIdx);
 363     }
 364 }
 365
 366
 367 void BufferView::storeExpandedState(const QModelIndex &networkIdx)
 368 {
 369     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 370
 371     int oldState = 0;
 372     if (isExpanded(networkIdx))
 373         oldState |= WasExpanded;
 374     if (model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool())
 375         oldState |= WasActive;
 376
 377     _expandedState[networkId] = oldState;
 378 }
 379
 380
 381 void BufferView::setExpandedState(const QModelIndex &networkIdx)
 382 {
 383     if (model()->data(networkIdx, NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 384         return;
 385
 386     if (model()->rowCount(networkIdx) == 0)
 387         return;
 388
 389     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 390
 391     bool networkActive = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
 392     bool expandNetwork = networkActive;
 393     if (_expandedState.contains(networkId)) {
 394         int oldState = _expandedState[networkId];
 395         if ((bool)(oldState & WasActive) == networkActive)
 396             expandNetwork = (bool)(oldState & WasExpanded);
 397     }
 398
 399     if (expandNetwork != isExpanded(networkIdx)) {
 400         update(networkIdx);
 401         setExpanded(networkIdx, expandNetwork);
 402     }
 403     storeExpandedState(networkIdx); // this call is needed to keep track of the isActive state
 404 }
 405
 406 #if QT_VERSION < 0x050000
 407 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 408 {
 409     TreeViewTouch::dataChanged(topLeft, bottomRight);
 410 #else
 411 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles)
 412 {
 413     TreeViewTouch::dataChanged(topLeft, bottomRight, roles);
 414 #endif
 415
 416     // determine how many items have been changed and if any of them is a networkitem
 417     // which just swichted from active to inactive or vice versa
 418     if (topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 419         return;
 420
 421     for (int i = topLeft.row(); i <= bottomRight.row(); i++) {
 422         QModelIndex networkIdx = topLeft.sibling(i, 0);
 423         setExpandedState(networkIdx);
 424     }
 425 }
 426
 427
 428 void BufferView::toggleHeader(bool checked)
 429 {
 430     QAction *action = qobject_cast<QAction *>(sender());
 431     header()->setSectionHidden((action->property("column")).toInt(), !checked);
 432 }
 433
 434
 435 void BufferView::contextMenuEvent(QContextMenuEvent *event)
 436 {
 437     QModelIndex index = indexAt(event->pos());
 438     if (!index.isValid())
 439         index = rootIndex();
 440
 441     QMenu contextMenu(this);
 442
 443     if (index.isValid()) {
 444         addActionsToMenu(&contextMenu, index);
 445     }
 446
 447     addFilterActions(&contextMenu, index);
 448
 449     if (!contextMenu.actions().isEmpty())
 450         contextMenu.exec(QCursor::pos());
 451 }
 452
 453
 454 void BufferView::addActionsToMenu(QMenu *contextMenu, const QModelIndex &index)
 455 {
 456     QModelIndexList indexList = selectedIndexes();
 457     // make sure the item we clicked on is first
 458     indexList.removeAll(index);
 459     indexList.prepend(index);
 460
 461     GraphicalUi::contextMenuActionProvider()->addActions(contextMenu, indexList, this, "menuActionTriggered", (bool)config());
 462 }
 463
 464
 465 void BufferView::addFilterActions(QMenu *contextMenu, const QModelIndex &index)
 466 {
 467     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 468     if (filter) {
 469         QList<QAction *> filterActions = filter->actions(index);
 470         if (!filterActions.isEmpty()) {
 471             contextMenu->addSeparator();
 472             foreach(QAction *action, filterActions) {
 473                 contextMenu->addAction(action);
 474             }
 475         }
 476     }
 477 }
 478
 479
 480 void BufferView::menuActionTriggered(QAction *result)
 481 {
 482     ContextMenuActionProvider::ActionType type = (ContextMenuActionProvider::ActionType)result->data().toInt();
 483     switch (type) {
 484     case ContextMenuActionProvider::HideBufferTemporarily:
 485         removeSelectedBuffers();
 486         break;
 487     case ContextMenuActionProvider::HideBufferPermanently:
 488         removeSelectedBuffers(true);
 489         break;
 490     default:
 491         return;
 492     }
 493 }
 494
 495
 496 void BufferView::nextBuffer()
 497 {
 498     changeBuffer(Forward);
 499 }
 500
 501
 502 void BufferView::previousBuffer()
 503 {
 504     changeBuffer(Backward);
 505 }
 506
 507
 508 void BufferView::changeBuffer(Direction direction)
 509 {
 510     QModelIndex currentIndex = selectionModel()->currentIndex();
 511     QModelIndex resultingIndex;
 512
 513     if (currentIndex.parent().isValid()) {
 514         //If we are a child node just switch among siblings unless it's the first/last child
 515         resultingIndex = currentIndex.sibling(currentIndex.row() + direction, 0);
 516
 517         if (!resultingIndex.isValid()) {
 518             QModelIndex parent = currentIndex.parent();
 519             if (direction == Backward)
 520                 resultingIndex = parent;
 521             else
 522                 resultingIndex = parent.sibling(parent.row() + direction, 0);
 523         }
 524     }
 525     else {
 526         //If we have a toplevel node, try and get an adjacent child
 527         if (direction == Backward) {
 528             QModelIndex newParent = currentIndex.sibling(currentIndex.row() - 1, 0);
 529             if (model()->hasChildren(newParent))
 530                 resultingIndex = newParent.child(model()->rowCount(newParent) - 1, 0);
 531             else
 532                 resultingIndex = newParent;
 533         }
 534         else {
 535             if (model()->hasChildren(currentIndex))
 536                 resultingIndex = currentIndex.child(0, 0);
 537             else
 538                 resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
 539         }
 540     }
 541
 542     if (!resultingIndex.isValid())
 543         return;
 544
 545     selectionModel()->setCurrentIndex(resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
 546     selectionModel()->select(resultingIndex, QItemSelectionModel::ClearAndSelect);
 547 }
 548
 549 void BufferView::selectFirstBuffer()
 550 {
 551     int networksCount = model()->rowCount(QModelIndex());
 552     if (networksCount == 0) {
 553         return;
 554     }
 555
 556     QModelIndex bufferIndex;
 557     for (int row = 0; row < networksCount; row++) {
 558         QModelIndex networkIndex = model()->index(row, 0, QModelIndex());
 559         int childCount = model()->rowCount(networkIndex);
 560         if (childCount > 0) {
 561             bufferIndex = model()->index(0, 0, networkIndex);
 562             break;
 563         }
 564     }
 565
 566     if (!bufferIndex.isValid()) {
 567         return;
 568     }
 569
 570     selectionModel()->setCurrentIndex(bufferIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
 571     selectionModel()->select(bufferIndex, QItemSelectionModel::ClearAndSelect);
 572 }
 573
 574 void BufferView::wheelEvent(QWheelEvent *event)
 575 {
 576     if (ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
 577         return TreeViewTouch::wheelEvent(event);
 578
 579     int rowDelta = (event->delta() > 0) ? -1 : 1;
 580     changeBuffer((Direction)rowDelta);
 581 }
 582
 583
 584 void BufferView::hideCurrentBuffer()
 585 {
 586     QModelIndex index = selectionModel()->currentIndex();
 587     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 588         return;
 589
 590     BufferId bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 591
 592     //The check above means we won't be looking at a network, which should always be the first row, so we can just go backwards.
 593     changeBuffer(Backward);
 594
 595     /*if(removedRows.contains(bufferId))
 596       continue;
 597
 598     removedRows << bufferId;*/
 599     /*if(permanently)
 600       config()->requestRemoveBufferPermanently(bufferId);
 601     else*/
 602     config()->requestRemoveBuffer(bufferId);
 603 }
 604
 605 void BufferView::filterTextChanged(QString filterString)
 606 {
 607     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 608     if (!filter) {
 609         return;
 610     }
 611     filter->setFilterString(filterString);
 612     on_configChanged(); // make sure collapsation is correct
 613 }
 614
 615
 616 QSize BufferView::sizeHint() const
 617 {
 618     return TreeViewTouch::sizeHint();
 619
 620     if (!model())
 621         return TreeViewTouch::sizeHint();
 622
 623     if (model()->rowCount() == 0)
 624         return QSize(120, 50);
 625
 626     int columnSize = 0;
 627     for (int i = 0; i < model()->columnCount(); i++) {
 628         if (!isColumnHidden(i))
 629             columnSize += sizeHintForColumn(i);
 630     }
 631     return QSize(columnSize, 50);
 632 }
 633
 634
 635 // ****************************************
 636 //  BufferViewDelgate
 637 // ****************************************
 638 class ColorsChangedEvent : public QEvent
 639 {
 640 public:
 641     ColorsChangedEvent() : QEvent(QEvent::User) {};
 642 };
 643
 644
 645 BufferViewDelegate::BufferViewDelegate(QObject *parent)
 646     : QStyledItemDelegate(parent)
 647 {
 648 }
 649
 650
 651 void BufferViewDelegate::customEvent(QEvent *event)
 652 {
 653     if (event->type() != QEvent::User)
 654         return;
 655
 656     event->accept();
 657 }
 658
 659
 660 bool BufferViewDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
 661 {
 662     if (event->type() != QEvent::MouseButtonRelease)
 663         return QStyledItemDelegate::editorEvent(event, model, option, index);
 664
 665     if (!(model->flags(index) & Qt::ItemIsUserCheckable))
 666         return QStyledItemDelegate::editorEvent(event, model, option, index);
 667
 668     QVariant value = index.data(Qt::CheckStateRole);
 669     if (!value.isValid())
 670         return QStyledItemDelegate::editorEvent(event, model, option, index);
 671
 672 #if QT_VERSION < 0x050000
 673     QStyleOptionViewItemV4 viewOpt(option);
 674 #else
 675     QStyleOptionViewItem viewOpt(option);
 676 #endif
 677     initStyleOption(&viewOpt, index);
 678
 679     QRect checkRect = viewOpt.widget->style()->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &viewOpt, viewOpt.widget);
 680     QMouseEvent *me = static_cast<QMouseEvent *>(event);
 681
 682     if (me->button() != Qt::LeftButton || !checkRect.contains(me->pos()))
 683         return QStyledItemDelegate::editorEvent(event, model, option, index);
 684
 685     Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
 686     if (state == Qt::Unchecked)
 687         state = Qt::PartiallyChecked;
 688     else if (state == Qt::PartiallyChecked)
 689         state = Qt::Checked;
 690     else
 691         state = Qt::Unchecked;
 692     model->setData(index, state, Qt::CheckStateRole);
 693     return true;
 694 }
 695
 696
 697 // ==============================
 698 //  BufferView Dock
 699 // ==============================
 700 BufferViewDock::BufferViewDock(BufferViewConfig *config, QWidget *parent)
 701     : QDockWidget(parent),
 702     _childWidget(0),
 703     _widget(new QWidget(parent)),
 704     _filterEdit(new QLineEdit(parent)),
 705     _active(false),
 706     _title(config->bufferViewName())
 707 {
 708     setObjectName("BufferViewDock-" + QString::number(config->bufferViewId()));
 709     toggleViewAction()->setData(config->bufferViewId());
 710     setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
 711     connect(config, SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(bufferViewRenamed(const QString &)));
 712     connect(config, SIGNAL(configChanged()), SLOT(configChanged()));
 713     updateTitle();
 714
 715     _widget->setLayout(new QVBoxLayout);
 716     _widget->layout()->setSpacing(0);
 717     _widget->layout()->setContentsMargins(0, 0, 0, 0);
 718
 719     // We need to potentially hide it early, so it doesn't flicker
 720     _filterEdit->setVisible(config->showSearch());
 721     _filterEdit->setFocusPolicy(Qt::ClickFocus);
 722     _filterEdit->installEventFilter(this);
 723     _filterEdit->setPlaceholderText(tr("Search..."));
 724     connect(_filterEdit, SIGNAL(returnPressed()), SLOT(onFilterReturnPressed()));
 725
 726     _widget->layout()->addWidget(_filterEdit);
 727     QDockWidget::setWidget(_widget);
 728 }
 729
 730
 731 void BufferViewDock::updateTitle()
 732 {
 733     QString title = _title;
 734     if (isActive())
 735         title.prepend(QString::fromUtf8("• "));
 736     setWindowTitle(title);
 737 }
 738
 739 void BufferViewDock::configChanged()
 740 {
 741     if (_filterEdit->isVisible() != config()->showSearch()) {
 742         _filterEdit->setVisible(config()->showSearch());
 743         _filterEdit->clear();
 744     }
 745 }
 746
 747 void BufferViewDock::onFilterReturnPressed()
 748 {
 749     if (_oldFocusItem) {
 750         _oldFocusItem->setFocus();
 751         _oldFocusItem = 0;
 752     }
 753
 754     if (!config()->showSearch()) {
 755         _filterEdit->setVisible(false);
 756     }
 757
 758     BufferView *view = bufferView();
 759     if (!view || _filterEdit->text().isEmpty()) {
 760         return;
 761     }
 762
 763     view->selectFirstBuffer();
 764     _filterEdit->clear();
 765 }
 766
 767 void BufferViewDock::setActive(bool active)
 768 {
 769     if (active != isActive()) {
 770         _active = active;
 771         updateTitle();
 772         if (active) {
 773             raise();  // for tabbed docks
 774         }
 775     }
 776 }
 777
 778 bool BufferViewDock::eventFilter(QObject *object, QEvent *event)
 779 {
 780    if (object != _filterEdit)  {
 781        return false;
 782    }
 783
 784    if (event->type() == QEvent::FocusOut) {
 785        if (!config()->showSearch() && _filterEdit->text().isEmpty()) {
 786            _filterEdit->setVisible(false);
 787            return true;
 788        }
 789    } else if (event->type() == QEvent::KeyRelease) {
 790        QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 791        if (keyEvent->key() != Qt::Key_Escape) {
 792            return false;
 793        }
 794
 795        _filterEdit->clear();
 796
 797        if (_oldFocusItem) {
 798            _oldFocusItem->setFocus();
 799            _oldFocusItem = 0;
 800        }
 801
 802        return true;
 803    }
 804
 805    return false;
 806 }
 807
 808 void BufferViewDock::bufferViewRenamed(const QString &newName)
 809 {
 810     _title = newName;
 811     updateTitle();
 812     toggleViewAction()->setText(newName);
 813 }
 814
 815
 816 int BufferViewDock::bufferViewId() const
 817 {
 818     BufferView *view = bufferView();
 819     if (!view)
 820         return 0;
 821
 822     if (view->config())
 823         return view->config()->bufferViewId();
 824     else
 825         return 0;
 826 }
 827
 828
 829 BufferViewConfig *BufferViewDock::config() const
 830 {
 831     BufferView *view = bufferView();
 832     if (!view)
 833         return 0;
 834     else
 835         return view->config();
 836 }
 837
 838 void BufferViewDock::setWidget(QWidget *newWidget)
 839 {
 840     _widget->layout()->addWidget(newWidget);
 841     _childWidget = newWidget;
 842
 843     connect(_filterEdit, SIGNAL(textChanged(QString)), bufferView(), SLOT(filterTextChanged(QString)));
 844 }
 845
 846 void BufferViewDock::activateFilter()
 847 {
 848     if (!_filterEdit->isVisible()) {
 849         _filterEdit->setVisible(true);
 850     }
 851
 852     _oldFocusItem = qApp->focusWidget();
 853
 854     _filterEdit->setFocus();
 855 }