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