src/uisupport/bufferview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2015 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
  32 #include "action.h"
  33 #include "buffermodel.h"
  34 #include "bufferviewfilter.h"
  35 #include "buffersettings.h"
  36 #include "buffersyncer.h"
  37 #include "client.h"
  38 #include "contextmenuactionprovider.h"
  39 #include "graphicalui.h"
  40 #include "network.h"
  41 #include "networkmodel.h"
  42 #include "contextmenuactionprovider.h"
  43
  44 /*****************************************
  45 * The TreeView showing the Buffers
  46 *****************************************/
  47 // Please be carefull when reimplementing methods which are used to inform the view about changes to the data
  48 // to be on the safe side: call QTreeView's method aswell
  49 BufferView::BufferView(QWidget *parent)
  50     : QTreeView(parent)
  51 {
  52     connect(this, SIGNAL(collapsed(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
  53     connect(this, SIGNAL(expanded(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
  54
  55     setSelectionMode(QAbstractItemView::ExtendedSelection);
  56
  57     QAbstractItemDelegate *oldDelegate = itemDelegate();
  58     BufferViewDelegate *tristateDelegate = new BufferViewDelegate(this);
  59     setItemDelegate(tristateDelegate);
  60     delete oldDelegate;
  61 }
  62
  63
  64 void BufferView::init()
  65 {
  66     header()->setContextMenuPolicy(Qt::ActionsContextMenu);
  67     hideColumn(1);
  68     hideColumn(2);
  69     setIndentation(10);
  70
  71     expandAll();
  72
  73     header()->hide(); // nobody seems to use this anyway
  74
  75     // breaks with Qt 4.8
  76     if (QString("4.8.0") > qVersion()) // FIXME breaks with Qt versions >= 4.10!
  77         setAnimated(true);
  78
  79     // FIXME This is to workaround bug #663
  80     setUniformRowHeights(true);
  81
  82 #ifndef QT_NO_DRAGANDDROP
  83     setDragEnabled(true);
  84     setAcceptDrops(true);
  85     setDropIndicatorShown(true);
  86 #endif
  87
  88     setSortingEnabled(true);
  89     sortByColumn(0, Qt::AscendingOrder);
  90
  91     // activated() fails on X11 and Qtopia at least
  92 #if defined Q_WS_QWS || defined Q_WS_X11
  93     disconnect(this, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
  94     connect(this, SIGNAL(doubleClicked(QModelIndex)), SLOT(joinChannel(QModelIndex)));
  95 #else
  96     // afaik this is better on Mac and Windows
  97     disconnect(this, SIGNAL(activated(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
  98     connect(this, SIGNAL(activated(QModelIndex)), SLOT(joinChannel(QModelIndex)));
  99 #endif
 100 }
 101
 102
 103 void BufferView::setModel(QAbstractItemModel *model)
 104 {
 105     delete selectionModel();
 106
 107     QTreeView::setModel(model);
 108     init();
 109     // remove old Actions
 110     QList<QAction *> oldactions = header()->actions();
 111     foreach(QAction *action, oldactions) {
 112         header()->removeAction(action);
 113         action->deleteLater();
 114     }
 115
 116     if (!model)
 117         return;
 118
 119     QString sectionName;
 120     QAction *showSection;
 121     for (int i = 1; i < model->columnCount(); i++) {
 122         sectionName = (model->headerData(i, Qt::Horizontal, Qt::DisplayRole)).toString();
 123         showSection = new QAction(sectionName, header());
 124         showSection->setCheckable(true);
 125         showSection->setChecked(!isColumnHidden(i));
 126         showSection->setProperty("column", i);
 127         connect(showSection, SIGNAL(toggled(bool)), this, SLOT(toggleHeader(bool)));
 128         header()->addAction(showSection);
 129     }
 130
 131     connect(model, SIGNAL(layoutChanged()), this, SLOT(on_layoutChanged()));
 132 }
 133
 134
 135 void BufferView::setFilteredModel(QAbstractItemModel *model_, BufferViewConfig *config)
 136 {
 137     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 138     if (filter) {
 139         filter->setConfig(config);
 140         setConfig(config);
 141         return;
 142     }
 143
 144     if (model()) {
 145         disconnect(this, 0, model(), 0);
 146         disconnect(model(), 0, this, 0);
 147     }
 148
 149     if (!model_) {
 150         setModel(model_);
 151     }
 152     else {
 153         BufferViewFilter *filter = new BufferViewFilter(model_, config);
 154         setModel(filter);
 155         connect(filter, SIGNAL(configChanged()), this, SLOT(on_configChanged()));
 156     }
 157     setConfig(config);
 158 }
 159
 160
 161 void BufferView::setConfig(BufferViewConfig *config)
 162 {
 163     if (_config == config)
 164         return;
 165
 166     if (_config) {
 167         disconnect(_config, 0, this, 0);
 168     }
 169
 170     _config = config;
 171     if (config) {
 172         connect(config, SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(setRootIndexForNetworkId(const NetworkId &)));
 173         setRootIndexForNetworkId(config->networkId());
 174     }
 175     else {
 176         setIndentation(10);
 177         setRootIndex(QModelIndex());
 178     }
 179 }
 180
 181
 182 void BufferView::setRootIndexForNetworkId(const NetworkId &networkId)
 183 {
 184     if (!networkId.isValid() || !model()) {
 185         setIndentation(10);
 186         setRootIndex(QModelIndex());
 187     }
 188     else {
 189         setIndentation(5);
 190         int networkCount = model()->rowCount();
 191         QModelIndex child;
 192         for (int i = 0; i < networkCount; i++) {
 193             child = model()->index(i, 0);
 194             if (networkId == model()->data(child, NetworkModel::NetworkIdRole).value<NetworkId>())
 195                 setRootIndex(child);
 196         }
 197     }
 198 }
 199
 200
 201 void BufferView::joinChannel(const QModelIndex &index)
 202 {
 203     BufferInfo::Type bufferType = (BufferInfo::Type)index.data(NetworkModel::BufferTypeRole).value<int>();
 204
 205     if (bufferType != BufferInfo::ChannelBuffer)
 206         return;
 207
 208     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
 209
 210     Client::userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
 211 }
 212
 213
 214 void BufferView::keyPressEvent(QKeyEvent *event)
 215 {
 216     if (event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
 217         event->accept();
 218         removeSelectedBuffers();
 219     }
 220     QTreeView::keyPressEvent(event);
 221 }
 222
 223
 224 void BufferView::dropEvent(QDropEvent *event)
 225 {
 226     QModelIndex index = indexAt(event->pos());
 227
 228     QRect indexRect = visualRect(index);
 229     QPoint cursorPos = event->pos();
 230
 231     // check if we're really _on_ the item and not indicating a move to just above or below the item
 232     const int margin = 2;
 233     if (cursorPos.y() - indexRect.top() < margin
 234         || indexRect.bottom() - cursorPos.y() < margin)
 235         return QTreeView::dropEvent(event);
 236
 237     QList<QPair<NetworkId, BufferId> > bufferList = Client::networkModel()->mimeDataToBufferList(event->mimeData());
 238     if (bufferList.count() != 1)
 239         return QTreeView::dropEvent(event);
 240
 241     BufferId bufferId2 = bufferList[0].second;
 242
 243     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 244         return QTreeView::dropEvent(event);
 245
 246     if (index.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
 247         return QTreeView::dropEvent(event);
 248
 249     BufferId bufferId1 = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 250     if (bufferId1 == bufferId2)
 251         return QTreeView::dropEvent(event);
 252
 253     int res = QMessageBox::question(0, tr("Merge buffers permanently?"),
 254         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)),
 255         QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
 256     if (res == QMessageBox::Yes) {
 257         Client::mergeBuffersPermanently(bufferId1, bufferId2);
 258     }
 259 }
 260
 261
 262 void BufferView::removeSelectedBuffers(bool permanently)
 263 {
 264     if (!config())
 265         return;
 266
 267     BufferId bufferId;
 268     QSet<BufferId> removedRows;
 269     foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
 270         if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 271             continue;
 272
 273         bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 274         if (removedRows.contains(bufferId))
 275             continue;
 276
 277         removedRows << bufferId;
 278     }
 279
 280     foreach(BufferId bufferId, removedRows) {
 281         if (permanently)
 282             config()->requestRemoveBufferPermanently(bufferId);
 283         else
 284             config()->requestRemoveBuffer(bufferId);
 285     }
 286 }
 287
 288
 289 void BufferView::rowsInserted(const QModelIndex &parent, int start, int end)
 290 {
 291     QTreeView::rowsInserted(parent, start, end);
 292
 293     // ensure that newly inserted network nodes are expanded per default
 294     if (parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 295         return;
 296
 297     setExpandedState(parent);
 298 }
 299
 300
 301 void BufferView::on_layoutChanged()
 302 {
 303     int numNets = model()->rowCount(QModelIndex());
 304     for (int row = 0; row < numNets; row++) {
 305         QModelIndex networkIdx = model()->index(row, 0, QModelIndex());
 306         setExpandedState(networkIdx);
 307     }
 308 }
 309
 310
 311 void BufferView::on_configChanged()
 312 {
 313     Q_ASSERT(model());
 314
 315     // expand all active networks... collapse inactive ones... unless manually changed
 316     QModelIndex networkIdx;
 317     NetworkId networkId;
 318     for (int row = 0; row < model()->rowCount(); row++) {
 319         networkIdx = model()->index(row, 0);
 320         if (model()->rowCount(networkIdx) ==  0)
 321             continue;
 322
 323         networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 324         if (!networkId.isValid())
 325             continue;
 326
 327         setExpandedState(networkIdx);
 328     }
 329
 330     if (config()) {
 331         // update selection to current one
 332         Client::bufferModel()->synchronizeView(this);
 333     }
 334 }
 335
 336
 337 void BufferView::storeExpandedState(const QModelIndex &networkIdx)
 338 {
 339     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 340
 341     int oldState = 0;
 342     if (isExpanded(networkIdx))
 343         oldState |= WasExpanded;
 344     if (model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool())
 345         oldState |= WasActive;
 346
 347     _expandedState[networkId] = oldState;
 348 }
 349
 350
 351 void BufferView::setExpandedState(const QModelIndex &networkIdx)
 352 {
 353     if (model()->data(networkIdx, NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 354         return;
 355
 356     if (model()->rowCount(networkIdx) == 0)
 357         return;
 358
 359     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 360
 361     bool networkActive = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
 362     bool expandNetwork = networkActive;
 363     if (_expandedState.contains(networkId)) {
 364         int oldState = _expandedState[networkId];
 365         if ((bool)(oldState & WasActive) == networkActive)
 366             expandNetwork = (bool)(oldState & WasExpanded);
 367     }
 368
 369     if (expandNetwork != isExpanded(networkIdx)) {
 370         update(networkIdx);
 371         setExpanded(networkIdx, expandNetwork);
 372     }
 373     storeExpandedState(networkIdx); // this call is needed to keep track of the isActive state
 374 }
 375
 376 #if QT_VERSION < 0x050000
 377 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 378 {
 379     QTreeView::dataChanged(topLeft, bottomRight);
 380 #else
 381 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles)
 382 {
 383     QTreeView::dataChanged(topLeft, bottomRight, roles);
 384 #endif
 385
 386     // determine how many items have been changed and if any of them is a networkitem
 387     // which just swichted from active to inactive or vice versa
 388     if (topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 389         return;
 390
 391     for (int i = topLeft.row(); i <= bottomRight.row(); i++) {
 392         QModelIndex networkIdx = topLeft.sibling(i, 0);
 393         setExpandedState(networkIdx);
 394     }
 395 }
 396
 397
 398 void BufferView::toggleHeader(bool checked)
 399 {
 400     QAction *action = qobject_cast<QAction *>(sender());
 401     header()->setSectionHidden((action->property("column")).toInt(), !checked);
 402 }
 403
 404
 405 void BufferView::contextMenuEvent(QContextMenuEvent *event)
 406 {
 407     QModelIndex index = indexAt(event->pos());
 408     if (!index.isValid())
 409         index = rootIndex();
 410
 411     QMenu contextMenu(this);
 412
 413     if (index.isValid()) {
 414         addActionsToMenu(&contextMenu, index);
 415     }
 416
 417     addFilterActions(&contextMenu, index);
 418
 419     if (!contextMenu.actions().isEmpty())
 420         contextMenu.exec(QCursor::pos());
 421 }
 422
 423
 424 void BufferView::addActionsToMenu(QMenu *contextMenu, const QModelIndex &index)
 425 {
 426     QModelIndexList indexList = selectedIndexes();
 427     // make sure the item we clicked on is first
 428     indexList.removeAll(index);
 429     indexList.prepend(index);
 430
 431     GraphicalUi::contextMenuActionProvider()->addActions(contextMenu, indexList, this, "menuActionTriggered", (bool)config());
 432 }
 433
 434
 435 void BufferView::addFilterActions(QMenu *contextMenu, const QModelIndex &index)
 436 {
 437     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 438     if (filter) {
 439         QList<QAction *> filterActions = filter->actions(index);
 440         if (!filterActions.isEmpty()) {
 441             contextMenu->addSeparator();
 442             foreach(QAction *action, filterActions) {
 443                 contextMenu->addAction(action);
 444             }
 445         }
 446     }
 447 }
 448
 449
 450 void BufferView::menuActionTriggered(QAction *result)
 451 {
 452     ContextMenuActionProvider::ActionType type = (ContextMenuActionProvider::ActionType)result->data().toInt();
 453     switch (type) {
 454     case ContextMenuActionProvider::HideBufferTemporarily:
 455         removeSelectedBuffers();
 456         break;
 457     case ContextMenuActionProvider::HideBufferPermanently:
 458         removeSelectedBuffers(true);
 459         break;
 460     default:
 461         return;
 462     }
 463 }
 464
 465
 466 void BufferView::nextBuffer()
 467 {
 468     changeBuffer(Forward);
 469 }
 470
 471
 472 void BufferView::previousBuffer()
 473 {
 474     changeBuffer(Backward);
 475 }
 476
 477
 478 void BufferView::changeBuffer(Direction direction)
 479 {
 480     QModelIndex currentIndex = selectionModel()->currentIndex();
 481     QModelIndex resultingIndex;
 482
 483     if (currentIndex.parent().isValid()) {
 484         //If we are a child node just switch among siblings unless it's the first/last child
 485         resultingIndex = currentIndex.sibling(currentIndex.row() + direction, 0);
 486
 487         if (!resultingIndex.isValid()) {
 488             QModelIndex parent = currentIndex.parent();
 489             if (direction == Backward)
 490                 resultingIndex = parent;
 491             else
 492                 resultingIndex = parent.sibling(parent.row() + direction, 0);
 493         }
 494     }
 495     else {
 496         //If we have a toplevel node, try and get an adjacent child
 497         if (direction == Backward) {
 498             QModelIndex newParent = currentIndex.sibling(currentIndex.row() - 1, 0);
 499             if (model()->hasChildren(newParent))
 500                 resultingIndex = newParent.child(model()->rowCount(newParent) - 1, 0);
 501             else
 502                 resultingIndex = newParent;
 503         }
 504         else {
 505             if (model()->hasChildren(currentIndex))
 506                 resultingIndex = currentIndex.child(0, 0);
 507             else
 508                 resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
 509         }
 510     }
 511
 512     if (!resultingIndex.isValid())
 513         return;
 514
 515     selectionModel()->setCurrentIndex(resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
 516     selectionModel()->select(resultingIndex, QItemSelectionModel::ClearAndSelect);
 517 }
 518
 519
 520 void BufferView::wheelEvent(QWheelEvent *event)
 521 {
 522     if (ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
 523         return QTreeView::wheelEvent(event);
 524
 525     int rowDelta = (event->delta() > 0) ? -1 : 1;
 526     changeBuffer((Direction)rowDelta);
 527 }
 528
 529
 530 void BufferView::hideCurrentBuffer()
 531 {
 532     QModelIndex index = selectionModel()->currentIndex();
 533     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 534         return;
 535
 536     BufferId bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 537
 538     //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.
 539     changeBuffer(Backward);
 540
 541     /*if(removedRows.contains(bufferId))
 542       continue;
 543
 544     removedRows << bufferId;*/
 545     /*if(permanently)
 546       config()->requestRemoveBufferPermanently(bufferId);
 547     else*/
 548     config()->requestRemoveBuffer(bufferId);
 549 }
 550
 551
 552 QSize BufferView::sizeHint() const
 553 {
 554     return QTreeView::sizeHint();
 555
 556     if (!model())
 557         return QTreeView::sizeHint();
 558
 559     if (model()->rowCount() == 0)
 560         return QSize(120, 50);
 561
 562     int columnSize = 0;
 563     for (int i = 0; i < model()->columnCount(); i++) {
 564         if (!isColumnHidden(i))
 565             columnSize += sizeHintForColumn(i);
 566     }
 567     return QSize(columnSize, 50);
 568 }
 569
 570
 571 // ****************************************
 572 //  BufferViewDelgate
 573 // ****************************************
 574 class ColorsChangedEvent : public QEvent
 575 {
 576 public:
 577     ColorsChangedEvent() : QEvent(QEvent::User) {};
 578 };
 579
 580
 581 BufferViewDelegate::BufferViewDelegate(QObject *parent)
 582     : QStyledItemDelegate(parent)
 583 {
 584 }
 585
 586
 587 void BufferViewDelegate::customEvent(QEvent *event)
 588 {
 589     if (event->type() != QEvent::User)
 590         return;
 591
 592     event->accept();
 593 }
 594
 595
 596 bool BufferViewDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
 597 {
 598     if (event->type() != QEvent::MouseButtonRelease)
 599         return QStyledItemDelegate::editorEvent(event, model, option, index);
 600
 601     if (!(model->flags(index) & Qt::ItemIsUserCheckable))
 602         return QStyledItemDelegate::editorEvent(event, model, option, index);
 603
 604     QVariant value = index.data(Qt::CheckStateRole);
 605     if (!value.isValid())
 606         return QStyledItemDelegate::editorEvent(event, model, option, index);
 607
 608     QStyleOptionViewItemV4 viewOpt(option);
 609     initStyleOption(&viewOpt, index);
 610
 611     QRect checkRect = viewOpt.widget->style()->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &viewOpt, viewOpt.widget);
 612     QMouseEvent *me = static_cast<QMouseEvent *>(event);
 613
 614     if (me->button() != Qt::LeftButton || !checkRect.contains(me->pos()))
 615         return QStyledItemDelegate::editorEvent(event, model, option, index);
 616
 617     Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
 618     if (state == Qt::Unchecked)
 619         state = Qt::PartiallyChecked;
 620     else if (state == Qt::PartiallyChecked)
 621         state = Qt::Checked;
 622     else
 623         state = Qt::Unchecked;
 624     model->setData(index, state, Qt::CheckStateRole);
 625     return true;
 626 }
 627
 628
 629 // ==============================
 630 //  BufferView Dock
 631 // ==============================
 632 BufferViewDock::BufferViewDock(BufferViewConfig *config, QWidget *parent)
 633     : QDockWidget(parent),
 634     _active(false),
 635     _title(config->bufferViewName())
 636 {
 637     setObjectName("BufferViewDock-" + QString::number(config->bufferViewId()));
 638     toggleViewAction()->setData(config->bufferViewId());
 639     setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
 640     connect(config, SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(bufferViewRenamed(const QString &)));
 641     updateTitle();
 642 }
 643
 644
 645 void BufferViewDock::updateTitle()
 646 {
 647     QString title = _title;
 648     if (isActive())
 649         title.prepend(QString::fromUtf8("• "));
 650     setWindowTitle(title);
 651 }
 652
 653
 654 void BufferViewDock::setActive(bool active)
 655 {
 656     if (active != isActive()) {
 657         _active = active;
 658         updateTitle();
 659         if (active)
 660             raise();  // for tabbed docks
 661     }
 662 }
 663
 664
 665 void BufferViewDock::bufferViewRenamed(const QString &newName)
 666 {
 667     _title = newName;
 668     updateTitle();
 669     toggleViewAction()->setText(newName);
 670 }
 671
 672
 673 int BufferViewDock::bufferViewId() const
 674 {
 675     BufferView *view = bufferView();
 676     if (!view)
 677         return 0;
 678
 679     if (view->config())
 680         return view->config()->bufferViewId();
 681     else
 682         return 0;
 683 }
 684
 685
 686 BufferViewConfig *BufferViewDock::config() const
 687 {
 688     BufferView *view = bufferView();
 689     if (!view)
 690         return 0;
 691     else
 692         return view->config();
 693 }