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     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
 135
 136 void BufferView::setFilteredModel(QAbstractItemModel *model_, BufferViewConfig *config)
 137 {
 138     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 139     if (filter) {
 140         filter->setConfig(config);
 141         setConfig(config);
 142         return;
 143     }
 144
 145     if (model()) {
 146         disconnect(this, 0, model(), 0);
 147         disconnect(model(), 0, this, 0);
 148     }
 149
 150     if (!model_) {
 151         setModel(model_);
 152     }
 153     else {
 154         BufferViewFilter *filter = new BufferViewFilter(model_, config);
 155         setModel(filter);
 156         connect(filter, SIGNAL(configChanged()), this, SLOT(on_configChanged()));
 157     }
 158     setConfig(config);
 159 }
 160
 161
 162 void BufferView::setConfig(BufferViewConfig *config)
 163 {
 164     if (_config == config)
 165         return;
 166
 167     if (_config) {
 168         disconnect(_config, 0, this, 0);
 169     }
 170
 171     _config = config;
 172     if (config) {
 173         connect(config, SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(setRootIndexForNetworkId(const NetworkId &)));
 174         setRootIndexForNetworkId(config->networkId());
 175     }
 176     else {
 177         setIndentation(10);
 178         setRootIndex(QModelIndex());
 179     }
 180 }
 181
 182
 183 void BufferView::setRootIndexForNetworkId(const NetworkId &networkId)
 184 {
 185     if (!networkId.isValid() || !model()) {
 186         setIndentation(10);
 187         setRootIndex(QModelIndex());
 188     }
 189     else {
 190         setIndentation(5);
 191         int networkCount = model()->rowCount();
 192         QModelIndex child;
 193         for (int i = 0; i < networkCount; i++) {
 194             child = model()->index(i, 0);
 195             if (networkId == model()->data(child, NetworkModel::NetworkIdRole).value<NetworkId>())
 196                 setRootIndex(child);
 197         }
 198     }
 199 }
 200
 201
 202 void BufferView::joinChannel(const QModelIndex &index)
 203 {
 204     BufferInfo::Type bufferType = (BufferInfo::Type)index.data(NetworkModel::BufferTypeRole).value<int>();
 205
 206     if (bufferType != BufferInfo::ChannelBuffer)
 207         return;
 208
 209     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
 210
 211     Client::userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
 212 }
 213
 214
 215 void BufferView::keyPressEvent(QKeyEvent *event)
 216 {
 217     if (event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
 218         event->accept();
 219         removeSelectedBuffers();
 220     }
 221     TreeViewTouch::keyPressEvent(event);
 222 }
 223
 224
 225 void BufferView::dropEvent(QDropEvent *event)
 226 {
 227     QModelIndex index = indexAt(event->pos());
 228
 229     QRect indexRect = visualRect(index);
 230     QPoint cursorPos = event->pos();
 231
 232     // check if we're really _on_ the item and not indicating a move to just above or below the item
 233     const int margin = 2;
 234     if (cursorPos.y() - indexRect.top() < margin
 235         || indexRect.bottom() - cursorPos.y() < margin)
 236         return TreeViewTouch::dropEvent(event);
 237
 238     QList<QPair<NetworkId, BufferId> > bufferList = Client::networkModel()->mimeDataToBufferList(event->mimeData());
 239     if (bufferList.count() != 1)
 240         return TreeViewTouch::dropEvent(event);
 241
 242     BufferId bufferId2 = bufferList[0].second;
 243
 244     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 245         return TreeViewTouch::dropEvent(event);
 246
 247     if (index.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
 248         return TreeViewTouch::dropEvent(event);
 249
 250     BufferId bufferId1 = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 251     if (bufferId1 == bufferId2)
 252         return TreeViewTouch::dropEvent(event);
 253
 254     int res = QMessageBox::question(0, tr("Merge buffers permanently?"),
 255         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)),
 256         QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
 257     if (res == QMessageBox::Yes) {
 258         Client::mergeBuffersPermanently(bufferId1, bufferId2);
 259     }
 260 }
 261
 262
 263 void BufferView::removeSelectedBuffers(bool permanently)
 264 {
 265     if (!config())
 266         return;
 267
 268     BufferId bufferId;
 269     QSet<BufferId> removedRows;
 270     foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
 271         if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 272             continue;
 273
 274         bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 275         if (removedRows.contains(bufferId))
 276             continue;
 277
 278         removedRows << bufferId;
 279     }
 280
 281     foreach(BufferId bufferId, removedRows) {
 282         if (permanently)
 283             config()->requestRemoveBufferPermanently(bufferId);
 284         else
 285             config()->requestRemoveBuffer(bufferId);
 286     }
 287 }
 288
 289
 290 void BufferView::rowsInserted(const QModelIndex &parent, int start, int end)
 291 {
 292     TreeViewTouch::rowsInserted(parent, start, end);
 293
 294     // ensure that newly inserted network nodes are expanded per default
 295     if (parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 296         return;
 297
 298     setExpandedState(parent);
 299 }
 300
 301
 302 void BufferView::on_layoutChanged()
 303 {
 304     int numNets = model()->rowCount(QModelIndex());
 305     for (int row = 0; row < numNets; row++) {
 306         QModelIndex networkIdx = model()->index(row, 0, QModelIndex());
 307         setExpandedState(networkIdx);
 308     }
 309 }
 310
 311
 312 void BufferView::on_configChanged()
 313 {
 314     Q_ASSERT(model());
 315
 316     // expand all active networks... collapse inactive ones... unless manually changed
 317     QModelIndex networkIdx;
 318     NetworkId networkId;
 319     for (int row = 0; row < model()->rowCount(); row++) {
 320         networkIdx = model()->index(row, 0);
 321         if (model()->rowCount(networkIdx) ==  0)
 322             continue;
 323
 324         networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 325         if (!networkId.isValid())
 326             continue;
 327
 328         setExpandedState(networkIdx);
 329     }
 330
 331     if (config()) {
 332         // update selection to current one
 333         Client::bufferModel()->synchronizeView(this);
 334     }
 335 }
 336
 337
 338 void BufferView::storeExpandedState(const QModelIndex &networkIdx)
 339 {
 340     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 341
 342     int oldState = 0;
 343     if (isExpanded(networkIdx))
 344         oldState |= WasExpanded;
 345     if (model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool())
 346         oldState |= WasActive;
 347
 348     _expandedState[networkId] = oldState;
 349 }
 350
 351
 352 void BufferView::setExpandedState(const QModelIndex &networkIdx)
 353 {
 354     if (model()->data(networkIdx, NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 355         return;
 356
 357     if (model()->rowCount(networkIdx) == 0)
 358         return;
 359
 360     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
 361
 362     bool networkActive = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
 363     bool expandNetwork = networkActive;
 364     if (_expandedState.contains(networkId)) {
 365         int oldState = _expandedState[networkId];
 366         if ((bool)(oldState & WasActive) == networkActive)
 367             expandNetwork = (bool)(oldState & WasExpanded);
 368     }
 369
 370     if (expandNetwork != isExpanded(networkIdx)) {
 371         update(networkIdx);
 372         setExpanded(networkIdx, expandNetwork);
 373     }
 374     storeExpandedState(networkIdx); // this call is needed to keep track of the isActive state
 375 }
 376
 377 #if QT_VERSION < 0x050000
 378 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 379 {
 380     TreeViewTouch::dataChanged(topLeft, bottomRight);
 381 #else
 382 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles)
 383 {
 384     TreeViewTouch::dataChanged(topLeft, bottomRight, roles);
 385 #endif
 386
 387     // determine how many items have been changed and if any of them is a networkitem
 388     // which just swichted from active to inactive or vice versa
 389     if (topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
 390         return;
 391
 392     for (int i = topLeft.row(); i <= bottomRight.row(); i++) {
 393         QModelIndex networkIdx = topLeft.sibling(i, 0);
 394         setExpandedState(networkIdx);
 395     }
 396 }
 397
 398
 399 void BufferView::toggleHeader(bool checked)
 400 {
 401     QAction *action = qobject_cast<QAction *>(sender());
 402     header()->setSectionHidden((action->property("column")).toInt(), !checked);
 403 }
 404
 405
 406 void BufferView::contextMenuEvent(QContextMenuEvent *event)
 407 {
 408     QModelIndex index = indexAt(event->pos());
 409     if (!index.isValid())
 410         index = rootIndex();
 411
 412     QMenu contextMenu(this);
 413
 414     if (index.isValid()) {
 415         addActionsToMenu(&contextMenu, index);
 416     }
 417
 418     addFilterActions(&contextMenu, index);
 419
 420     if (!contextMenu.actions().isEmpty())
 421         contextMenu.exec(QCursor::pos());
 422 }
 423
 424
 425 void BufferView::addActionsToMenu(QMenu *contextMenu, const QModelIndex &index)
 426 {
 427     QModelIndexList indexList = selectedIndexes();
 428     // make sure the item we clicked on is first
 429     indexList.removeAll(index);
 430     indexList.prepend(index);
 431
 432     GraphicalUi::contextMenuActionProvider()->addActions(contextMenu, indexList, this, "menuActionTriggered", (bool)config());
 433 }
 434
 435
 436 void BufferView::addFilterActions(QMenu *contextMenu, const QModelIndex &index)
 437 {
 438     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 439     if (filter) {
 440         QList<QAction *> filterActions = filter->actions(index);
 441         if (!filterActions.isEmpty()) {
 442             contextMenu->addSeparator();
 443             foreach(QAction *action, filterActions) {
 444                 contextMenu->addAction(action);
 445             }
 446         }
 447     }
 448 }
 449
 450
 451 void BufferView::menuActionTriggered(QAction *result)
 452 {
 453     ContextMenuActionProvider::ActionType type = (ContextMenuActionProvider::ActionType)result->data().toInt();
 454     switch (type) {
 455     case ContextMenuActionProvider::HideBufferTemporarily:
 456         removeSelectedBuffers();
 457         break;
 458     case ContextMenuActionProvider::HideBufferPermanently:
 459         removeSelectedBuffers(true);
 460         break;
 461     default:
 462         return;
 463     }
 464 }
 465
 466
 467 void BufferView::nextBuffer()
 468 {
 469     changeBuffer(Forward);
 470 }
 471
 472
 473 void BufferView::previousBuffer()
 474 {
 475     changeBuffer(Backward);
 476 }
 477
 478
 479 void BufferView::changeBuffer(Direction direction)
 480 {
 481     QModelIndex currentIndex = selectionModel()->currentIndex();
 482     QModelIndex resultingIndex;
 483
 484     if (currentIndex.parent().isValid()) {
 485         //If we are a child node just switch among siblings unless it's the first/last child
 486         resultingIndex = currentIndex.sibling(currentIndex.row() + direction, 0);
 487
 488         if (!resultingIndex.isValid()) {
 489             QModelIndex parent = currentIndex.parent();
 490             if (direction == Backward)
 491                 resultingIndex = parent;
 492             else
 493                 resultingIndex = parent.sibling(parent.row() + direction, 0);
 494         }
 495     }
 496     else {
 497         //If we have a toplevel node, try and get an adjacent child
 498         if (direction == Backward) {
 499             QModelIndex newParent = currentIndex.sibling(currentIndex.row() - 1, 0);
 500             if (model()->hasChildren(newParent))
 501                 resultingIndex = newParent.child(model()->rowCount(newParent) - 1, 0);
 502             else
 503                 resultingIndex = newParent;
 504         }
 505         else {
 506             if (model()->hasChildren(currentIndex))
 507                 resultingIndex = currentIndex.child(0, 0);
 508             else
 509                 resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
 510         }
 511     }
 512
 513     if (!resultingIndex.isValid())
 514         return;
 515
 516     selectionModel()->setCurrentIndex(resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
 517     selectionModel()->select(resultingIndex, QItemSelectionModel::ClearAndSelect);
 518 }
 519
 520 void BufferView::selectFirstBuffer()
 521 {
 522     int networksCount = model()->rowCount(QModelIndex());
 523     if (networksCount == 0) {
 524         return;
 525     }
 526
 527     QModelIndex bufferIndex;
 528     for (int row = 0; row < networksCount; row++) {
 529         QModelIndex networkIndex = model()->index(row, 0, QModelIndex());
 530         int childCount = model()->rowCount(networkIndex);
 531         if (childCount > 0) {
 532             bufferIndex = model()->index(0, 0, networkIndex);
 533             break;
 534         }
 535     }
 536
 537     if (!bufferIndex.isValid()) {
 538         return;
 539     }
 540
 541     selectionModel()->setCurrentIndex(bufferIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
 542     selectionModel()->select(bufferIndex, QItemSelectionModel::ClearAndSelect);
 543 }
 544
 545 void BufferView::wheelEvent(QWheelEvent *event)
 546 {
 547     if (ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
 548         return TreeViewTouch::wheelEvent(event);
 549
 550     int rowDelta = (event->delta() > 0) ? -1 : 1;
 551     changeBuffer((Direction)rowDelta);
 552 }
 553
 554
 555 void BufferView::hideCurrentBuffer()
 556 {
 557     QModelIndex index = selectionModel()->currentIndex();
 558     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
 559         return;
 560
 561     BufferId bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
 562
 563     //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.
 564     changeBuffer(Backward);
 565
 566     /*if(removedRows.contains(bufferId))
 567       continue;
 568
 569     removedRows << bufferId;*/
 570     /*if(permanently)
 571       config()->requestRemoveBufferPermanently(bufferId);
 572     else*/
 573     config()->requestRemoveBuffer(bufferId);
 574 }
 575
 576 void BufferView::filterTextChanged(QString filterString)
 577 {
 578     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
 579     if (!filter) {
 580         return;
 581     }
 582     filter->setFilterString(filterString);
 583     on_configChanged(); // make sure collapsation is correct
 584 }
 585
 586
 587 QSize BufferView::sizeHint() const
 588 {
 589     return TreeViewTouch::sizeHint();
 590
 591     if (!model())
 592         return TreeViewTouch::sizeHint();
 593
 594     if (model()->rowCount() == 0)
 595         return QSize(120, 50);
 596
 597     int columnSize = 0;
 598     for (int i = 0; i < model()->columnCount(); i++) {
 599         if (!isColumnHidden(i))
 600             columnSize += sizeHintForColumn(i);
 601     }
 602     return QSize(columnSize, 50);
 603 }
 604
 605
 606 // ****************************************
 607 //  BufferViewDelgate
 608 // ****************************************
 609 class ColorsChangedEvent : public QEvent
 610 {
 611 public:
 612     ColorsChangedEvent() : QEvent(QEvent::User) {};
 613 };
 614
 615
 616 BufferViewDelegate::BufferViewDelegate(QObject *parent)
 617     : QStyledItemDelegate(parent)
 618 {
 619 }
 620
 621
 622 void BufferViewDelegate::customEvent(QEvent *event)
 623 {
 624     if (event->type() != QEvent::User)
 625         return;
 626
 627     event->accept();
 628 }
 629
 630
 631 bool BufferViewDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
 632 {
 633     if (event->type() != QEvent::MouseButtonRelease)
 634         return QStyledItemDelegate::editorEvent(event, model, option, index);
 635
 636     if (!(model->flags(index) & Qt::ItemIsUserCheckable))
 637         return QStyledItemDelegate::editorEvent(event, model, option, index);
 638
 639     QVariant value = index.data(Qt::CheckStateRole);
 640     if (!value.isValid())
 641         return QStyledItemDelegate::editorEvent(event, model, option, index);
 642
 643     QStyleOptionViewItemV4 viewOpt(option);
 644     initStyleOption(&viewOpt, index);
 645
 646     QRect checkRect = viewOpt.widget->style()->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &viewOpt, viewOpt.widget);
 647     QMouseEvent *me = static_cast<QMouseEvent *>(event);
 648
 649     if (me->button() != Qt::LeftButton || !checkRect.contains(me->pos()))
 650         return QStyledItemDelegate::editorEvent(event, model, option, index);
 651
 652     Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
 653     if (state == Qt::Unchecked)
 654         state = Qt::PartiallyChecked;
 655     else if (state == Qt::PartiallyChecked)
 656         state = Qt::Checked;
 657     else
 658         state = Qt::Unchecked;
 659     model->setData(index, state, Qt::CheckStateRole);
 660     return true;
 661 }
 662
 663
 664 // ==============================
 665 //  BufferView Dock
 666 // ==============================
 667 BufferViewDock::BufferViewDock(BufferViewConfig *config, QWidget *parent)
 668     : QDockWidget(parent),
 669     _childWidget(0),
 670     _widget(new QWidget(parent)),
 671     _filterEdit(new QLineEdit(parent)),
 672     _active(false),
 673     _title(config->bufferViewName())
 674 {
 675     setObjectName("BufferViewDock-" + QString::number(config->bufferViewId()));
 676     toggleViewAction()->setData(config->bufferViewId());
 677     setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
 678     connect(config, SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(bufferViewRenamed(const QString &)));
 679     connect(config, SIGNAL(configChanged()), SLOT(configChanged()));
 680     updateTitle();
 681
 682     _widget->setLayout(new QVBoxLayout);
 683     _widget->layout()->setSpacing(0);
 684     _widget->layout()->setContentsMargins(0, 0, 0, 0);
 685
 686     // We need to potentially hide it early, so it doesn't flicker
 687     _filterEdit->setVisible(config->showSearch());
 688     _filterEdit->setFocusPolicy(Qt::ClickFocus);
 689     _filterEdit->installEventFilter(this);
 690     _filterEdit->setPlaceholderText(tr("Search..."));
 691     connect(_filterEdit, SIGNAL(returnPressed()), SLOT(onFilterReturnPressed()));
 692
 693     _widget->layout()->addWidget(_filterEdit);
 694     QDockWidget::setWidget(_widget);
 695 }
 696
 697
 698 void BufferViewDock::updateTitle()
 699 {
 700     QString title = _title;
 701     if (isActive())
 702         title.prepend(QString::fromUtf8("• "));
 703     setWindowTitle(title);
 704 }
 705
 706 void BufferViewDock::configChanged()
 707 {
 708     if (_filterEdit->isVisible() != config()->showSearch()) {
 709         _filterEdit->setVisible(config()->showSearch());
 710         _filterEdit->clear();
 711     }
 712 }
 713
 714 void BufferViewDock::onFilterReturnPressed()
 715 {
 716     if (_oldFocusItem) {
 717         _oldFocusItem->setFocus();
 718         _oldFocusItem = 0;
 719     }
 720
 721     if (!config()->showSearch()) {
 722         _filterEdit->setVisible(false);
 723     }
 724
 725     BufferView *view = bufferView();
 726     if (!view || _filterEdit->text().isEmpty()) {
 727         return;
 728     }
 729
 730     view->selectFirstBuffer();
 731     _filterEdit->clear();
 732 }
 733
 734 void BufferViewDock::setActive(bool active)
 735 {
 736     if (active != isActive()) {
 737         _active = active;
 738         updateTitle();
 739         if (active) {
 740             raise();  // for tabbed docks
 741         }
 742     }
 743 }
 744
 745 bool BufferViewDock::eventFilter(QObject *object, QEvent *event)
 746 {
 747    if (object != _filterEdit)  {
 748        return false;
 749    }
 750
 751    if (event->type() == QEvent::FocusOut) {
 752        if (!config()->showSearch() && _filterEdit->text().isEmpty()) {
 753            _filterEdit->setVisible(false);
 754            return true;
 755        }
 756    } else if (event->type() == QEvent::KeyRelease) {
 757        QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 758        if (keyEvent->key() != Qt::Key_Escape) {
 759            return false;
 760        }
 761
 762        _filterEdit->clear();
 763
 764        if (_oldFocusItem) {
 765            _oldFocusItem->setFocus();
 766            _oldFocusItem = 0;
 767        }
 768
 769        return true;
 770    }
 771
 772    return false;
 773 }
 774
 775 void BufferViewDock::bufferViewRenamed(const QString &newName)
 776 {
 777     _title = newName;
 778     updateTitle();
 779     toggleViewAction()->setText(newName);
 780 }
 781
 782
 783 int BufferViewDock::bufferViewId() const
 784 {
 785     BufferView *view = bufferView();
 786     if (!view)
 787         return 0;
 788
 789     if (view->config())
 790         return view->config()->bufferViewId();
 791     else
 792         return 0;
 793 }
 794
 795
 796 BufferViewConfig *BufferViewDock::config() const
 797 {
 798     BufferView *view = bufferView();
 799     if (!view)
 800         return 0;
 801     else
 802         return view->config();
 803 }
 804
 805 void BufferViewDock::setWidget(QWidget *newWidget)
 806 {
 807     _widget->layout()->addWidget(newWidget);
 808     _childWidget = newWidget;
 809
 810     connect(_filterEdit, SIGNAL(textChanged(QString)), bufferView(), SLOT(filterTextChanged(QString)));
 811 }
 812
 813 void BufferViewDock::activateFilter()
 814 {
 815     if (!_filterEdit->isVisible()) {
 816         _filterEdit->setVisible(true);
 817     }
 818
 819     _oldFocusItem = qApp->focusWidget();
 820
 821     _filterEdit->setFocus();
 822 }