src/views/dolphindetailsview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at)                  *
   3  *   Copyright (C) 2008 by Simon St. James (kdedevel@etotheipiplusone.com) *
   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) any later version.                                   *
   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 "dolphindetailsview.h"
  22
  23 #include "additionalinfoaccessor.h"
  24 #include "dolphinmodel.h"
  25 #include "dolphinviewcontroller.h"
  26 #include "dolphinfileitemdelegate.h"
  27 #include "settings/dolphinsettings.h"
  28 #include "dolphinsortfilterproxymodel.h"
  29 #include "dolphinviewautoscroller.h"
  30 #include "draganddrophelper.h"
  31 #include "viewextensionsfactory.h"
  32 #include "viewmodecontroller.h"
  33 #include "viewproperties.h"
  34 #include "zoomlevelinfo.h"
  35
  36 #include "dolphin_detailsmodesettings.h"
  37 #include "dolphin_generalsettings.h"
  38
  39 #include <kdirmodel.h>
  40 #include <kdirlister.h>
  41 #include <klocale.h>
  42 #include <kmenu.h>
  43
  44 #include <QApplication>
  45 #include <QHeaderView>
  46 #include <QScrollBar>
  47
  48 DolphinDetailsView::DolphinDetailsView(QWidget* parent,
  49                                        DolphinViewController* dolphinViewController,
  50                                        const ViewModeController* viewModeController,
  51                                        DolphinSortFilterProxyModel* proxyModel) :
  52     DolphinTreeView(parent),
  53     m_autoResize(true),
  54     m_dolphinViewController(dolphinViewController),
  55     m_viewModeController(viewModeController),
  56     m_extensionsFactory(0),
  57     m_expandableFoldersAction(0),
  58     m_expandedUrls(),
  59     m_font(),
  60     m_decorationSize()
  61 {
  62     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  63     Q_ASSERT(settings != 0);
  64     Q_ASSERT(dolphinViewController != 0);
  65     Q_ASSERT(viewModeController != 0);
  66
  67     setLayoutDirection(Qt::LeftToRight);
  68     setAcceptDrops(true);
  69     setSortingEnabled(true);
  70     setUniformRowHeights(true);
  71     setSelectionBehavior(SelectItems);
  72     setDragDropMode(QAbstractItemView::DragDrop);
  73     setDropIndicatorShown(false);
  74     setAlternatingRowColors(true);
  75     setRootIsDecorated(settings->expandableFolders());
  76     setItemsExpandable(settings->expandableFolders());
  77     setEditTriggers(QAbstractItemView::NoEditTriggers);
  78     setModel(proxyModel);
  79
  80     setMouseTracking(true);
  81
  82     const ViewProperties props(viewModeController->url());
  83     setSortIndicatorSection(props.sorting());
  84     setSortIndicatorOrder(props.sortOrder());
  85
  86     QHeaderView* headerView = header();
  87     connect(headerView, SIGNAL(sectionClicked(int)),
  88             this, SLOT(synchronizeSortingState(int)));
  89     headerView->setContextMenuPolicy(Qt::CustomContextMenu);
  90     connect(headerView, SIGNAL(customContextMenuRequested(const QPoint&)),
  91             this, SLOT(configureSettings(const QPoint&)));
  92     connect(headerView, SIGNAL(sectionResized(int, int, int)),
  93             this, SLOT(slotHeaderSectionResized(int, int, int)));
  94     connect(headerView, SIGNAL(sectionHandleDoubleClicked(int)),
  95             this, SLOT(disableAutoResizing()));
  96
  97     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  98             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  99     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 100             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
 101
 102     connect(this, SIGNAL(clicked(const QModelIndex&)),
 103             dolphinViewController, SLOT(requestTab(const QModelIndex&)));
 104     if (KGlobalSettings::singleClick()) {
 105         connect(this, SIGNAL(clicked(const QModelIndex&)),
 106                 dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 107     } else {
 108         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 109                 dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 110     }
 111
 112     connect(this, SIGNAL(entered(const QModelIndex&)),
 113             this, SLOT(slotEntered(const QModelIndex&)));
 114     connect(this, SIGNAL(viewportEntered()),
 115             dolphinViewController, SLOT(emitViewportEntered()));
 116     connect(viewModeController, SIGNAL(zoomLevelChanged(int)),
 117             this, SLOT(setZoomLevel(int)));
 118     connect(dolphinViewController->view(), SIGNAL(additionalInfoChanged()),
 119             this, SLOT(updateColumnVisibility()));
 120     connect(viewModeController, SIGNAL(activationChanged(bool)),
 121             this, SLOT(slotActivationChanged(bool)));
 122
 123     if (settings->useSystemFont()) {
 124         m_font = KGlobalSettings::generalFont();
 125     } else {
 126         m_font = QFont(settings->fontFamily(),
 127                        qRound(settings->fontSize()),
 128                        settings->fontWeight(),
 129                        settings->italicFont());
 130         m_font.setPointSizeF(settings->fontSize());
 131     }
 132
 133     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 134     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 135
 136     const DolphinView* view = dolphinViewController->view();
 137     connect(view, SIGNAL(showPreviewChanged()),
 138             this, SLOT(slotShowPreviewChanged()));
 139
 140
 141     setFocus();
 142     viewport()->installEventFilter(this);
 143
 144     connect(KGlobalSettings::self(), SIGNAL(settingsChanged(int)),
 145             this, SLOT(slotGlobalSettingsChanged(int)));
 146
 147     m_expandableFoldersAction = new QAction(i18nc("@option:check", "Expandable Folders"), this);
 148     m_expandableFoldersAction->setCheckable(true);
 149     connect(m_expandableFoldersAction, SIGNAL(toggled(bool)),
 150             this, SLOT(setFoldersExpandable(bool)));
 151
 152     connect(this, SIGNAL(expanded(const QModelIndex&)), this, SLOT(slotExpanded(const QModelIndex&)));
 153     connect(this, SIGNAL(collapsed(const QModelIndex&)), this, SLOT(slotCollapsed(const QModelIndex&)));
 154
 155     updateDecorationSize(view->showPreview());
 156
 157     m_extensionsFactory = new ViewExtensionsFactory(this, dolphinViewController, viewModeController);
 158     m_extensionsFactory->fileItemDelegate()->setMinimizedNameColumn(true);
 159
 160     KDirLister *dirLister = qobject_cast<KDirModel*>(proxyModel->sourceModel())->dirLister();
 161     connect(dirLister, SIGNAL(newItems(KFileItemList)), this, SLOT(resizeColumns()));
 162 }
 163
 164 DolphinDetailsView::~DolphinDetailsView()
 165 {
 166 }
 167
 168 QSet<KUrl> DolphinDetailsView::expandedUrls() const
 169 {
 170     return m_expandedUrls;
 171 }
 172
 173 bool DolphinDetailsView::event(QEvent* event)
 174 {
 175     if (event->type() == QEvent::Polish) {
 176         header()->setResizeMode(QHeaderView::Interactive);
 177         updateColumnVisibility();
 178     }
 179
 180     return DolphinTreeView::event(event);
 181 }
 182
 183 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 184 {
 185     QStyleOptionViewItem viewOptions = DolphinTreeView::viewOptions();
 186     viewOptions.font = m_font;
 187     viewOptions.fontMetrics = QFontMetrics(m_font);
 188     viewOptions.showDecorationSelected = true;
 189     viewOptions.decorationSize = m_decorationSize;
 190     return viewOptions;
 191 }
 192
 193 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 194 {
 195     DolphinTreeView::contextMenuEvent(event);
 196
 197     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 198     m_expandableFoldersAction->setChecked(settings->expandableFolders());
 199     m_dolphinViewController->triggerContextMenuRequest(event->pos(),
 200                                             QList<QAction*>() << m_expandableFoldersAction);
 201 }
 202
 203 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 204 {
 205     m_dolphinViewController->requestActivation();
 206
 207     DolphinTreeView::mousePressEvent(event);
 208
 209     const QModelIndex index = indexAt(event->pos());
 210     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 211         // The mouse press is done somewhere outside the filename column
 212         if (QApplication::mouseButtons() & Qt::MidButton) {
 213             m_dolphinViewController->replaceUrlByClipboard();
 214         }
 215     }
 216 }
 217
 218 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 219 {
 220     DragAndDropHelper::instance().startDrag(this, supportedActions, m_dolphinViewController);
 221     DolphinTreeView::startDrag(supportedActions);
 222 }
 223
 224 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 225 {
 226     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 227         event->acceptProposedAction();
 228     }
 229     DolphinTreeView::dragEnterEvent(event);
 230 }
 231
 232 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 233 {
 234     DolphinTreeView::dragMoveEvent(event);
 235
 236     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 237         // Accept URL drops, independently from the destination item
 238         event->acceptProposedAction();
 239     }
 240 }
 241
 242 void DolphinDetailsView::dropEvent(QDropEvent* event)
 243 {
 244     const QModelIndex index = indexAt(event->pos());
 245     KFileItem item;
 246     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 247         item = m_dolphinViewController->itemForIndex(index);
 248     }
 249     m_dolphinViewController->indicateDroppedUrls(item, m_viewModeController->url(), event);
 250     DolphinTreeView::dropEvent(event);
 251 }
 252
 253 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 254 {
 255     DolphinTreeView::keyPressEvent(event);
 256     m_dolphinViewController->handleKeyPressEvent(event);
 257 }
 258
 259 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 260 {
 261     DolphinTreeView::resizeEvent(event);
 262     if (m_autoResize) {
 263         resizeColumns();
 264     }
 265 }
 266
 267 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 268 {
 269     const int step = m_decorationSize.height();
 270     verticalScrollBar()->setSingleStep(step);
 271     DolphinTreeView::wheelEvent(event);
 272 }
 273
 274 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 275 {
 276     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 277     DolphinTreeView::currentChanged(current, previous);
 278
 279     // If folders are expanded, the width which is available for editing may have changed
 280     // because it depends on the level of the current item in the folder hierarchy.
 281     adjustMaximumSizeForEditing(current);
 282 }
 283
 284 bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
 285 {
 286     if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
 287         // If the mouse is above an item and moved very fast outside the widget,
 288         // no viewportEntered() signal might be emitted although the mouse has been moved
 289         // above the viewport.
 290         m_dolphinViewController->emitViewportEntered();
 291     }
 292
 293     return DolphinTreeView::eventFilter(watched, event);
 294 }
 295
 296 QRect DolphinDetailsView::visualRect(const QModelIndex& index) const
 297 {
 298     QRect rect = DolphinTreeView::visualRect(index);
 299     const KFileItem item = m_dolphinViewController->itemForIndex(index);
 300     if (!item.isNull()) {
 301         const int width = DolphinFileItemDelegate::nameColumnWidth(item.text(), viewOptions());
 302         rect.setWidth(width);
 303     }
 304
 305     return rect;
 306 }
 307
 308 bool DolphinDetailsView::acceptsDrop(const QModelIndex& index) const
 309 {
 310     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 311         // Accept drops above directories
 312         const KFileItem item = m_dolphinViewController->itemForIndex(index);
 313         return !item.isNull() && item.isDir();
 314     }
 315
 316     return false;
 317 }
 318
 319 void DolphinDetailsView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
 320 {
 321     removeExpandedIndexes(parent, start, end);
 322     DolphinTreeView::rowsAboutToBeRemoved(parent, start, end);
 323 }
 324
 325 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 326 {
 327     header()->setSortIndicator(sorting, header()->sortIndicatorOrder());
 328 }
 329
 330 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 331 {
 332     header()->setSortIndicator(header()->sortIndicatorSection(), sortOrder);
 333 }
 334
 335 void DolphinDetailsView::synchronizeSortingState(int column)
 336 {
 337     // The sorting has already been changed in QTreeView if this slot is
 338     // invoked, but Dolphin is not informed about this.
 339     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 340     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 341     m_dolphinViewController->indicateSortingChange(sorting);
 342     m_dolphinViewController->indicateSortOrderChange(sortOrder);
 343 }
 344
 345 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 346 {
 347     if (index.column() == DolphinModel::Name) {
 348         m_dolphinViewController->emitItemEntered(index);
 349     } else {
 350         m_dolphinViewController->emitViewportEntered();
 351     }
 352 }
 353
 354 void DolphinDetailsView::setZoomLevel(int level)
 355 {
 356     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 357     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 358
 359     const bool showPreview = m_dolphinViewController->view()->showPreview();
 360     if (showPreview) {
 361         settings->setPreviewSize(size);
 362     } else {
 363         settings->setIconSize(size);
 364     }
 365
 366     updateDecorationSize(showPreview);
 367 }
 368
 369 void DolphinDetailsView::slotShowPreviewChanged()
 370 {
 371     const DolphinView* view = m_dolphinViewController->view();
 372     updateDecorationSize(view->showPreview());
 373 }
 374
 375 void DolphinDetailsView::configureSettings(const QPoint& pos)
 376 {
 377     KMenu popup(this);
 378     popup.addTitle(i18nc("@title:menu", "Columns"));
 379
 380     // Add checkbox items for each column
 381     QHeaderView* headerView = header();
 382     const int columns = model()->columnCount();
 383     for (int i = 0; i < columns; ++i) {
 384         const int logicalIndex = headerView->logicalIndex(i);
 385         const QString text = model()->headerData(logicalIndex, Qt::Horizontal).toString();
 386         if (!text.isEmpty()) {
 387             QAction* action = popup.addAction(text);
 388             action->setCheckable(true);
 389             action->setChecked(!headerView->isSectionHidden(logicalIndex));
 390             action->setData(logicalIndex);
 391             action->setEnabled(logicalIndex != DolphinModel::Name);
 392         }
 393     }
 394     popup.addSeparator();
 395
 396     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 397     if (activatedAction != 0) {
 398         const bool show = activatedAction->isChecked();
 399         const int columnIndex = activatedAction->data().toInt();
 400
 401         KFileItemDelegate::InformationList list = m_dolphinViewController->view()->additionalInfo();
 402         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 403         if (show) {
 404             Q_ASSERT(!list.contains(info));
 405             list.append(info);
 406         } else {
 407             Q_ASSERT(list.contains(info));
 408             const int index = list.indexOf(info);
 409             list.removeAt(index);
 410         }
 411
 412         m_dolphinViewController->indicateAdditionalInfoChange(list);
 413         setColumnHidden(columnIndex, !show);
 414         resizeColumns();
 415     }
 416 }
 417
 418 void DolphinDetailsView::updateColumnVisibility()
 419 {
 420     QHeaderView* headerView = header();
 421     disconnect(headerView, SIGNAL(sectionMoved(int, int, int)),
 422                this, SLOT(saveColumnPositions()));
 423
 424     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 425     const QList<int> columnPositions = settings->columnPositions();
 426
 427     const KFileItemDelegate::InformationList list = m_dolphinViewController->view()->additionalInfo();
 428     for (int i = DolphinModel::Name; i < DolphinModel::ExtraColumnCount; ++i) {
 429         const KFileItemDelegate::Information info = infoForColumn(i);
 430         const bool hide = !list.contains(info) && (i != DolphinModel::Name);
 431         if (isColumnHidden(i) != hide) {
 432             setColumnHidden(i, hide);
 433         }
 434
 435         // If the list columnPositions has been written by an older Dolphin version,
 436         // its length might be smaller than DolphinModel::ExtraColumnCount. Therefore,
 437         // we have to check if item number i exists before accessing it.
 438         if (i < columnPositions.length()) {
 439             const int position = columnPositions[i];
 440
 441             // The position might be outside the correct range if the list columnPositions
 442             // has been written by a newer Dolphin version with more columns.
 443             if (position < DolphinModel::ExtraColumnCount) {
 444                 const int from = headerView->visualIndex(i);
 445                 headerView->moveSection(from, position);
 446             }
 447         }
 448     }
 449
 450     resizeColumns();
 451
 452     connect(headerView, SIGNAL(sectionMoved(int, int, int)),
 453             this, SLOT(saveColumnPositions()));
 454 }
 455
 456 void DolphinDetailsView::resizeColumns()
 457 {
 458     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 459     // around 3 seconds for each (!) resize operation when having > 10000 items).
 460     // This gets a problem especially when opening large directories, where several
 461     // resize operations are received for showing the currently available items during
 462     // loading (the application hangs around 20 seconds when loading > 10000 items).
 463
 464     QHeaderView* headerView = header();
 465     const int rowCount = model()->rowCount();
 466     QFontMetrics fontMetrics(viewport()->font());
 467
 468     // Define the maximum number of rows, where an exact (but expensive) calculation
 469     // of the widths is done.
 470     const int maxRowCount = 200;
 471
 472     // Calculate the required with for each column and store it in columnWidth[]
 473     int columnWidth[DolphinModel::ExtraColumnCount];
 474
 475     for (int column = 0; column < DolphinModel::ExtraColumnCount; ++column) {
 476         columnWidth[column] = 0;
 477         if (!isColumnHidden(column)) {
 478             // Calculate the required width for the current column and consider only
 479             // up to maxRowCount columns for performance reasons
 480             if (rowCount > 0) {
 481                 const QAbstractProxyModel* proxyModel = qobject_cast<const QAbstractProxyModel*>(model());
 482                 const KDirModel* dirModel = qobject_cast<const KDirModel*>(proxyModel->sourceModel());
 483
 484                 const int count = qMin(rowCount, maxRowCount);
 485                 const QStyleOptionViewItem option = viewOptions();
 486                 for (int row = 0; row < count; ++row) {
 487                     const QModelIndex index = dirModel->index(row, column);
 488                     const int width = itemDelegate()->sizeHint(option, index).width();
 489                     if (width > columnWidth[column]) {
 490                         columnWidth[column] = width;
 491                     }
 492                 }
 493             }
 494
 495             // Assure that the required width is sufficient for the header too
 496             const int logicalIndex = headerView->logicalIndex(column);
 497             const QString headline = model()->headerData(logicalIndex, Qt::Horizontal).toString();
 498             // TODO: check Qt-sources which left/right-gap is used for the headlines
 499             const int headlineWidth = fontMetrics.width(headline) + 20;
 500
 501             columnWidth[column] = qMax(columnWidth[column], headlineWidth);
 502         }
 503     }
 504
 505     // Resize all columns except of the name column
 506     int requiredWidth = 0;
 507     for (int column = KDirModel::Size; column < DolphinModel::ExtraColumnCount; ++column) {
 508         if (!isColumnHidden(column)) {
 509             requiredWidth += columnWidth[column];
 510             headerView->resizeSection(column, columnWidth[column]);
 511         }
 512     }
 513
 514     // Resize the name column in a way that the whole available width is used
 515     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 516
 517     const int minNameWidth = 300;
 518     if (columnWidth[KDirModel::Name] < minNameWidth) {
 519         columnWidth[KDirModel::Name] = minNameWidth;
 520
 521         if ((rowCount > 0) && (rowCount < maxRowCount)) {
 522             // Try to decrease the name column width without clipping any text
 523             const int nameWidth = sizeHintForColumn(DolphinModel::Name);
 524             if (nameWidth + requiredWidth <= viewport()->width()) {
 525                 columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 526             } else if (nameWidth < minNameWidth) {
 527                 columnWidth[KDirModel::Name] = nameWidth;
 528             }
 529         }
 530     }
 531
 532     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 533 }
 534
 535 void DolphinDetailsView::saveColumnPositions()
 536 {
 537     QList<int> columnPositions;
 538     for (int i = DolphinModel::Name; i < DolphinModel::ExtraColumnCount; ++i) {
 539         columnPositions.append(header()->visualIndex(i));
 540     }
 541
 542     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 543     settings->setColumnPositions(columnPositions);
 544 }
 545
 546 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 547 {
 548     Q_UNUSED(logicalIndex);
 549     Q_UNUSED(oldSize);
 550     Q_UNUSED(newSize);
 551     // If the user changes the size of the headers, the autoresize feature should be
 552     // turned off. As there is no dedicated interface to find out whether the header
 553     // section has been resized by the user or by a resize event, another approach is used.
 554     // Attention: Take care when changing the if-condition to verify that there is no
 555     // regression in combination with bug 178630 (see fix in comment #8).
 556     if ((QApplication::mouseButtons() & Qt::LeftButton) && header()->underMouse()) {
 557         disableAutoResizing();
 558     }
 559
 560     adjustMaximumSizeForEditing(currentIndex());
 561 }
 562
 563 void DolphinDetailsView::slotActivationChanged(bool active)
 564 {
 565     setAlternatingRowColors(active);
 566 }
 567
 568 void DolphinDetailsView::disableAutoResizing()
 569 {
 570     m_autoResize = false;
 571 }
 572
 573 void DolphinDetailsView::requestActivation()
 574 {
 575     m_dolphinViewController->requestActivation();
 576 }
 577
 578 void DolphinDetailsView::slotGlobalSettingsChanged(int category)
 579 {
 580     Q_UNUSED(category);
 581
 582     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 583     Q_ASSERT(settings != 0);
 584     if (settings->useSystemFont()) {
 585         m_font = KGlobalSettings::generalFont();
 586     }
 587     // Disconnect then reconnect, since the settings have been changed, the connection requirements may have also.
 588     disconnect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 589     disconnect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 590     if (KGlobalSettings::singleClick()) {
 591         connect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 592     } else {
 593         connect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 594     }
 595 }
 596
 597
 598 void DolphinDetailsView::setFoldersExpandable(bool expandable)
 599 {
 600     if (!expandable) {
 601         // Collapse all expanded folders, as QTreeView::setItemsExpandable(false)
 602         // does not do this task
 603         const int rowCount = model()->rowCount();
 604         for (int row = 0; row < rowCount; ++row) {
 605             setExpanded(model()->index(row, 0), false);
 606         }
 607     }
 608     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 609     settings->setExpandableFolders(expandable);
 610     setRootIsDecorated(expandable);
 611     setItemsExpandable(expandable);
 612
 613     // The width of the space which is available for editing has changed
 614     // because of the (dis)appearance of the expanding toggles
 615     adjustMaximumSizeForEditing(currentIndex());
 616 }
 617
 618 void DolphinDetailsView::slotExpanded(const QModelIndex& index)
 619 {
 620     KFileItem item = m_dolphinViewController->itemForIndex(index);
 621     if (!item.isNull()) {
 622         m_expandedUrls.insert(item.url());
 623     }
 624 }
 625
 626 void DolphinDetailsView::slotCollapsed(const QModelIndex& index)
 627 {
 628     KFileItem item = m_dolphinViewController->itemForIndex(index);
 629     if (!item.isNull()) {
 630         m_expandedUrls.remove(item.url());
 631     }
 632 }
 633
 634 void DolphinDetailsView::removeExpandedIndexes(const QModelIndex& parent, int start, int end)
 635 {
 636     if (m_expandedUrls.isEmpty()) {
 637         return;
 638     }
 639
 640     for (int row = start; row <= end; row++) {
 641         const QModelIndex index = model()->index(row, 0, parent);
 642         if (isExpanded(index)) {
 643             slotCollapsed(index);
 644             removeExpandedIndexes(index, 0, model()->rowCount(index) - 1);
 645         }
 646     }
 647 }
 648
 649 void DolphinDetailsView::updateDecorationSize(bool showPreview)
 650 {
 651     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 652     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 653     setIconSize(QSize(iconSize, iconSize));
 654     m_decorationSize = QSize(iconSize, iconSize);
 655
 656     if (m_extensionsFactory) {
 657         // The old maximumSize used by KFileItemDelegate is not valid any more after the icon size change.
 658         // It must be discarded before doItemsLayout() is called (see bug 234600).
 659         m_extensionsFactory->fileItemDelegate()->setMaximumSize(QSize());
 660     }
 661
 662     doItemsLayout();
 663
 664     // Calculate the new maximumSize for KFileItemDelegate after the icon size change.
 665     QModelIndex current = currentIndex();
 666     if (current.isValid()) {
 667         adjustMaximumSizeForEditing(current);
 668     }
 669 }
 670
 671 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 672 {
 673     return AdditionalInfoAccessor::instance().keyForColumn(columnIndex);
 674 }
 675
 676 void DolphinDetailsView::adjustMaximumSizeForEditing(const QModelIndex& index)
 677 {
 678     // Make sure that the full width of the "Name" column is available for "Rename Inline".
 679     // Before we do that, we have to check if m_extensionsFactory has been initialised because
 680     // it is possible that we end up here before the constructor is finished (see bug 257035)
 681     if (m_extensionsFactory) {
 682         m_extensionsFactory->fileItemDelegate()->setMaximumSize(QTreeView::visualRect(index).size());
 683     }
 684 }
 685
 686 #include "dolphindetailsview.moc"