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     // setFocus() must be called after m_extensionsFactory is initialised (see bug 240374).
 163     setFocus();
 164 }
 165
 166 DolphinDetailsView::~DolphinDetailsView()
 167 {
 168 }
 169
 170 QSet<KUrl> DolphinDetailsView::expandedUrls() const
 171 {
 172     return m_expandedUrls;
 173 }
 174
 175 bool DolphinDetailsView::event(QEvent* event)
 176 {
 177     if (event->type() == QEvent::Polish) {
 178         header()->setResizeMode(QHeaderView::Interactive);
 179         updateColumnVisibility();
 180     }
 181
 182     return DolphinTreeView::event(event);
 183 }
 184
 185 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 186 {
 187     QStyleOptionViewItem viewOptions = DolphinTreeView::viewOptions();
 188     viewOptions.font = m_font;
 189     viewOptions.fontMetrics = QFontMetrics(m_font);
 190     viewOptions.showDecorationSelected = true;
 191     viewOptions.decorationSize = m_decorationSize;
 192     return viewOptions;
 193 }
 194
 195 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 196 {
 197     DolphinTreeView::contextMenuEvent(event);
 198
 199     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 200     m_expandableFoldersAction->setChecked(settings->expandableFolders());
 201     m_dolphinViewController->triggerContextMenuRequest(event->pos(),
 202                                             QList<QAction*>() << m_expandableFoldersAction);
 203 }
 204
 205 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 206 {
 207     m_dolphinViewController->requestActivation();
 208
 209     DolphinTreeView::mousePressEvent(event);
 210
 211     const QModelIndex index = indexAt(event->pos());
 212     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 213         // The mouse press is done somewhere outside the filename column
 214         if (QApplication::mouseButtons() & Qt::MidButton) {
 215             m_dolphinViewController->replaceUrlByClipboard();
 216         }
 217     }
 218 }
 219
 220 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 221 {
 222     DragAndDropHelper::instance().startDrag(this, supportedActions, m_dolphinViewController);
 223     DolphinTreeView::startDrag(supportedActions);
 224 }
 225
 226 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 227 {
 228     event->acceptProposedAction();
 229     DolphinTreeView::dragEnterEvent(event);
 230 }
 231
 232 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 233 {
 234     DolphinTreeView::dragMoveEvent(event);
 235     event->acceptProposedAction();
 236 }
 237
 238 void DolphinDetailsView::dropEvent(QDropEvent* event)
 239 {
 240     const QModelIndex index = indexAt(event->pos());
 241     KFileItem item;
 242     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 243         item = m_dolphinViewController->itemForIndex(index);
 244     }
 245     m_dolphinViewController->indicateDroppedUrls(item, m_viewModeController->url(), event);
 246     DolphinTreeView::dropEvent(event);
 247 }
 248
 249 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 250 {
 251     DolphinTreeView::keyPressEvent(event);
 252     m_dolphinViewController->handleKeyPressEvent(event);
 253 }
 254
 255 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 256 {
 257     DolphinTreeView::resizeEvent(event);
 258     if (m_autoResize) {
 259         resizeColumns();
 260     }
 261 }
 262
 263 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 264 {
 265     const int step = m_decorationSize.height();
 266     verticalScrollBar()->setSingleStep(step);
 267     DolphinTreeView::wheelEvent(event);
 268 }
 269
 270 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 271 {
 272     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 273     DolphinTreeView::currentChanged(current, previous);
 274
 275     // If folders are expanded, the width which is available for editing may have changed
 276     // because it depends on the level of the current item in the folder hierarchy.
 277     adjustMaximumSizeForEditing(current);
 278 }
 279
 280 bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
 281 {
 282     if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
 283         // If the mouse is above an item and moved very fast outside the widget,
 284         // no viewportEntered() signal might be emitted although the mouse has been moved
 285         // above the viewport.
 286         m_dolphinViewController->emitViewportEntered();
 287     }
 288
 289     return DolphinTreeView::eventFilter(watched, event);
 290 }
 291
 292 QRect DolphinDetailsView::visualRect(const QModelIndex& index) const
 293 {
 294     QRect rect = DolphinTreeView::visualRect(index);
 295     const KFileItem item = m_dolphinViewController->itemForIndex(index);
 296     if (!item.isNull()) {
 297         const int width = DolphinFileItemDelegate::nameColumnWidth(item.text(), viewOptions());
 298
 299         if (width < rect.width()) {
 300             rect.setWidth(width);
 301         }
 302     }
 303
 304     return rect;
 305 }
 306
 307 bool DolphinDetailsView::acceptsDrop(const QModelIndex& index) const
 308 {
 309     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 310         // Accept drops above directories
 311         const KFileItem item = m_dolphinViewController->itemForIndex(index);
 312         return !item.isNull() && item.isDir();
 313     }
 314
 315     return false;
 316 }
 317
 318 void DolphinDetailsView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
 319 {
 320     removeExpandedIndexes(parent, start, end);
 321     DolphinTreeView::rowsAboutToBeRemoved(parent, start, end);
 322 }
 323
 324 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 325 {
 326     header()->setSortIndicator(sorting, header()->sortIndicatorOrder());
 327 }
 328
 329 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 330 {
 331     header()->setSortIndicator(header()->sortIndicatorSection(), sortOrder);
 332 }
 333
 334 void DolphinDetailsView::synchronizeSortingState(int column)
 335 {
 336     // The sorting has already been changed in QTreeView if this slot is
 337     // invoked, but Dolphin is not informed about this.
 338     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 339     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 340     m_dolphinViewController->indicateSortingChange(sorting);
 341     m_dolphinViewController->indicateSortOrderChange(sortOrder);
 342 }
 343
 344 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 345 {
 346     if (index.column() == DolphinModel::Name) {
 347         m_dolphinViewController->emitItemEntered(index);
 348     } else {
 349         m_dolphinViewController->emitViewportEntered();
 350     }
 351 }
 352
 353 void DolphinDetailsView::setZoomLevel(int level)
 354 {
 355     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 356     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 357
 358     const bool showPreview = m_dolphinViewController->view()->showPreview();
 359     if (showPreview) {
 360         settings->setPreviewSize(size);
 361     } else {
 362         settings->setIconSize(size);
 363     }
 364
 365     updateDecorationSize(showPreview);
 366 }
 367
 368 void DolphinDetailsView::slotShowPreviewChanged()
 369 {
 370     const DolphinView* view = m_dolphinViewController->view();
 371     updateDecorationSize(view->showPreview());
 372 }
 373
 374 void DolphinDetailsView::configureSettings(const QPoint& pos)
 375 {
 376     KMenu popup(this);
 377     popup.addTitle(i18nc("@title:menu", "Columns"));
 378
 379     // Add checkbox items for each column
 380     QHeaderView* headerView = header();
 381     const int columns = model()->columnCount();
 382     for (int i = 0; i < columns; ++i) {
 383         const int logicalIndex = headerView->logicalIndex(i);
 384         const QString text = model()->headerData(logicalIndex, Qt::Horizontal).toString();
 385         if (!text.isEmpty()) {
 386             QAction* action = popup.addAction(text);
 387             action->setCheckable(true);
 388             action->setChecked(!headerView->isSectionHidden(logicalIndex));
 389             action->setData(logicalIndex);
 390             action->setEnabled(logicalIndex != DolphinModel::Name);
 391         }
 392     }
 393     popup.addSeparator();
 394
 395     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 396     if (activatedAction != 0) {
 397         const bool show = activatedAction->isChecked();
 398         const int columnIndex = activatedAction->data().toInt();
 399
 400         KFileItemDelegate::InformationList list = m_dolphinViewController->view()->additionalInfo();
 401         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 402         if (show) {
 403             Q_ASSERT(!list.contains(info));
 404             list.append(info);
 405         } else {
 406             Q_ASSERT(list.contains(info));
 407             const int index = list.indexOf(info);
 408             list.removeAt(index);
 409         }
 410
 411         m_dolphinViewController->indicateAdditionalInfoChange(list);
 412         setColumnHidden(columnIndex, !show);
 413         resizeColumns();
 414     }
 415 }
 416
 417 void DolphinDetailsView::updateColumnVisibility()
 418 {
 419     QHeaderView* headerView = header();
 420     disconnect(headerView, SIGNAL(sectionMoved(int, int, int)),
 421                this, SLOT(saveColumnPositions()));
 422
 423     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 424     const QList<int> columnPositions = settings->columnPositions();
 425
 426     const KFileItemDelegate::InformationList list = m_dolphinViewController->view()->additionalInfo();
 427     for (int i = DolphinModel::Name; i < DolphinModel::ExtraColumnCount; ++i) {
 428         const KFileItemDelegate::Information info = infoForColumn(i);
 429         const bool hide = !list.contains(info) && (i != DolphinModel::Name);
 430         if (isColumnHidden(i) != hide) {
 431             setColumnHidden(i, hide);
 432         }
 433
 434         // If the list columnPositions has been written by an older Dolphin version,
 435         // its length might be smaller than DolphinModel::ExtraColumnCount. Therefore,
 436         // we have to check if item number i exists before accessing it.
 437         if (i < columnPositions.length()) {
 438             const int position = columnPositions[i];
 439
 440             // The position might be outside the correct range if the list columnPositions
 441             // has been written by a newer Dolphin version with more columns.
 442             if (position < DolphinModel::ExtraColumnCount) {
 443                 const int from = headerView->visualIndex(i);
 444                 headerView->moveSection(from, position);
 445             }
 446         }
 447     }
 448
 449     resizeColumns();
 450
 451     connect(headerView, SIGNAL(sectionMoved(int, int, int)),
 452             this, SLOT(saveColumnPositions()));
 453 }
 454
 455 void DolphinDetailsView::resizeColumns()
 456 {
 457     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 458     // around 3 seconds for each (!) resize operation when having > 10000 items).
 459     // This gets a problem especially when opening large directories, where several
 460     // resize operations are received for showing the currently available items during
 461     // loading (the application hangs around 20 seconds when loading > 10000 items).
 462
 463     QHeaderView* headerView = header();
 464     const int rowCount = model()->rowCount();
 465     QFontMetrics fontMetrics(viewport()->font());
 466
 467     // Define the maximum number of rows, where an exact (but expensive) calculation
 468     // of the widths is done.
 469     const int maxRowCount = 200;
 470
 471     // Calculate the required with for each column and store it in columnWidth[]
 472     int columnWidth[DolphinModel::ExtraColumnCount];
 473
 474     for (int column = 0; column < DolphinModel::ExtraColumnCount; ++column) {
 475         columnWidth[column] = 0;
 476         if (!isColumnHidden(column)) {
 477             // Calculate the required width for the current column and consider only
 478             // up to maxRowCount columns for performance reasons
 479             if (rowCount > 0) {
 480                 const QAbstractProxyModel* proxyModel = qobject_cast<const QAbstractProxyModel*>(model());
 481                 const KDirModel* dirModel = qobject_cast<const KDirModel*>(proxyModel->sourceModel());
 482
 483                 const int count = qMin(rowCount, maxRowCount);
 484                 const QStyleOptionViewItem option = viewOptions();
 485                 for (int row = 0; row < count; ++row) {
 486                     const QModelIndex index = dirModel->index(row, column);
 487                     const int width = itemDelegate()->sizeHint(option, index).width();
 488                     if (width > columnWidth[column]) {
 489                         columnWidth[column] = width;
 490                     }
 491                 }
 492             }
 493
 494             // Assure that the required width is sufficient for the header too
 495             const int logicalIndex = headerView->logicalIndex(column);
 496             const QString headline = model()->headerData(logicalIndex, Qt::Horizontal).toString();
 497             // TODO: check Qt-sources which left/right-gap is used for the headlines
 498             const int headlineWidth = fontMetrics.width(headline) + 20;
 499
 500             columnWidth[column] = qMax(columnWidth[column], headlineWidth);
 501         }
 502     }
 503
 504     // Resize all columns except of the name column
 505     int requiredWidth = 0;
 506     for (int column = KDirModel::Size; column < DolphinModel::ExtraColumnCount; ++column) {
 507         if (!isColumnHidden(column)) {
 508             requiredWidth += columnWidth[column];
 509             headerView->resizeSection(column, columnWidth[column]);
 510         }
 511     }
 512
 513     // Resize the name column in a way that the whole available width is used
 514     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 515
 516     const int minNameWidth = 300;
 517     if (columnWidth[KDirModel::Name] < minNameWidth) {
 518         columnWidth[KDirModel::Name] = minNameWidth;
 519
 520         if ((rowCount > 0) && (rowCount < maxRowCount)) {
 521             // Try to decrease the name column width without clipping any text
 522             const int nameWidth = sizeHintForColumn(DolphinModel::Name);
 523             if (nameWidth + requiredWidth <= viewport()->width()) {
 524                 columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 525             } else if (nameWidth < minNameWidth) {
 526                 columnWidth[KDirModel::Name] = nameWidth;
 527             }
 528         }
 529     }
 530
 531     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 532 }
 533
 534 void DolphinDetailsView::saveColumnPositions()
 535 {
 536     QList<int> columnPositions;
 537     for (int i = DolphinModel::Name; i < DolphinModel::ExtraColumnCount; ++i) {
 538         columnPositions.append(header()->visualIndex(i));
 539     }
 540
 541     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 542     settings->setColumnPositions(columnPositions);
 543 }
 544
 545 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 546 {
 547     Q_UNUSED(logicalIndex);
 548     Q_UNUSED(oldSize);
 549     Q_UNUSED(newSize);
 550     // If the user changes the size of the headers, the autoresize feature should be
 551     // turned off. As there is no dedicated interface to find out whether the header
 552     // section has been resized by the user or by a resize event, another approach is used.
 553     // Attention: Take care when changing the if-condition to verify that there is no
 554     // regression in combination with bug 178630 (see fix in comment #8).
 555     if ((QApplication::mouseButtons() & Qt::LeftButton) && header()->underMouse()) {
 556         disableAutoResizing();
 557     }
 558
 559     adjustMaximumSizeForEditing(currentIndex());
 560 }
 561
 562 void DolphinDetailsView::slotActivationChanged(bool active)
 563 {
 564     setAlternatingRowColors(active);
 565 }
 566
 567 void DolphinDetailsView::disableAutoResizing()
 568 {
 569     m_autoResize = false;
 570 }
 571
 572 void DolphinDetailsView::requestActivation()
 573 {
 574     m_dolphinViewController->requestActivation();
 575 }
 576
 577 void DolphinDetailsView::slotGlobalSettingsChanged(int category)
 578 {
 579     Q_UNUSED(category);
 580
 581     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 582     Q_ASSERT(settings != 0);
 583     if (settings->useSystemFont()) {
 584         m_font = KGlobalSettings::generalFont();
 585     }
 586     // Disconnect then reconnect, since the settings have been changed, the connection requirements may have also.
 587     disconnect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 588     disconnect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 589     if (KGlobalSettings::singleClick()) {
 590         connect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 591     } else {
 592         connect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
 593     }
 594 }
 595
 596
 597 void DolphinDetailsView::setFoldersExpandable(bool expandable)
 598 {
 599     if (!expandable) {
 600         // Collapse all expanded folders, as QTreeView::setItemsExpandable(false)
 601         // does not do this task
 602         const int rowCount = model()->rowCount();
 603         for (int row = 0; row < rowCount; ++row) {
 604             setExpanded(model()->index(row, 0), false);
 605         }
 606     }
 607     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 608     settings->setExpandableFolders(expandable);
 609     setRootIsDecorated(expandable);
 610     setItemsExpandable(expandable);
 611
 612     // The width of the space which is available for editing has changed
 613     // because of the (dis)appearance of the expanding toggles
 614     adjustMaximumSizeForEditing(currentIndex());
 615 }
 616
 617 void DolphinDetailsView::slotExpanded(const QModelIndex& index)
 618 {
 619     KFileItem item = m_dolphinViewController->itemForIndex(index);
 620     if (!item.isNull()) {
 621         m_expandedUrls.insert(item.url());
 622     }
 623 }
 624
 625 void DolphinDetailsView::slotCollapsed(const QModelIndex& index)
 626 {
 627     KFileItem item = m_dolphinViewController->itemForIndex(index);
 628     if (!item.isNull()) {
 629         m_expandedUrls.remove(item.url());
 630     }
 631 }
 632
 633 void DolphinDetailsView::removeExpandedIndexes(const QModelIndex& parent, int start, int end)
 634 {
 635     if (m_expandedUrls.isEmpty()) {
 636         return;
 637     }
 638
 639     for (int row = start; row <= end; row++) {
 640         const QModelIndex index = model()->index(row, 0, parent);
 641         if (isExpanded(index)) {
 642             slotCollapsed(index);
 643             removeExpandedIndexes(index, 0, model()->rowCount(index) - 1);
 644         }
 645     }
 646 }
 647
 648 void DolphinDetailsView::updateDecorationSize(bool showPreview)
 649 {
 650     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 651     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 652     setIconSize(QSize(iconSize, iconSize));
 653     m_decorationSize = QSize(iconSize, iconSize);
 654
 655     if (m_extensionsFactory) {
 656         // The old maximumSize used by KFileItemDelegate is not valid any more after the icon size change.
 657         // It must be discarded before doItemsLayout() is called (see bug 234600).
 658         m_extensionsFactory->fileItemDelegate()->setMaximumSize(QSize());
 659     }
 660
 661     doItemsLayout();
 662
 663     // Calculate the new maximumSize for KFileItemDelegate after the icon size change.
 664     QModelIndex current = currentIndex();
 665     if (current.isValid()) {
 666         adjustMaximumSizeForEditing(current);
 667     }
 668 }
 669
 670 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 671 {
 672     return AdditionalInfoAccessor::instance().keyForColumn(columnIndex);
 673 }
 674
 675 void DolphinDetailsView::adjustMaximumSizeForEditing(const QModelIndex& index)
 676 {
 677     // Make sure that the full width of the "Name" column is available for "Rename Inline".
 678     // Before we do that, we have to check if m_extensionsFactory has been initialised because
 679     // it is possible that we end up here before the constructor is finished (see bug 257035)
 680     if (m_extensionsFactory) {
 681         m_extensionsFactory->fileItemDelegate()->setMaximumSize(QTreeView::visualRect(index).size());
 682     }
 683 }
 684
 685 #include "dolphindetailsview.moc"