src/views/dolphinview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006-2009 by Peter Penz <peter.penz@gmx.at>             *
   3  *   Copyright (C) 2006 by Gregor Kališnik <gregor@podnapisi.net>          *
   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 "dolphinview.h"
  22
  23 #include <QAbstractItemView>
  24 #include <QApplication>
  25 #include <QClipboard>
  26 #include <QKeyEvent>
  27 #include <QItemSelection>
  28 #include <QBoxLayout>
  29 #include <QTimer>
  30 #include <QScrollBar>
  31
  32 #include <kactioncollection.h>
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kiconeffect.h>
  36 #include <kfileitem.h>
  37 #include <klocale.h>
  38 #include <kio/deletejob.h>
  39 #include <kio/netaccess.h>
  40 #include <kio/previewjob.h>
  41 #include <kjob.h>
  42 #include <kmenu.h>
  43 #include <kmessagebox.h>
  44 #include <kmimetyperesolver.h>
  45 #include <konq_fileitemcapabilities.h>
  46 #include <konq_operations.h>
  47 #include <konqmimedata.h>
  48 #include <ktoggleaction.h>
  49 #include <kurl.h>
  50
  51 #include "additionalinfoaccessor.h"
  52 #include "dolphinmodel.h"
  53 #include "dolphincolumnviewcontainer.h"
  54 #include "dolphinviewcontroller.h"
  55 #include "dolphindetailsview.h"
  56 #include "dolphinfileitemdelegate.h"
  57 #include "dolphinnewfilemenuobserver.h"
  58 #include "dolphinsortfilterproxymodel.h"
  59 #include "dolphin_detailsmodesettings.h"
  60 #include "dolphiniconsview.h"
  61 #include "dolphin_generalsettings.h"
  62 #include "draganddrophelper.h"
  63 #include "renamedialog.h"
  64 #include "settings/dolphinsettings.h"
  65 #include "viewmodecontroller.h"
  66 #include "viewproperties.h"
  67 #include "zoomlevelinfo.h"
  68 #include "dolphindetailsviewexpander.h"
  69
  70 DolphinView::DolphinView(QWidget* parent,
  71                          const KUrl& url,
  72                          DolphinSortFilterProxyModel* proxyModel) :
  73     QWidget(parent),
  74     m_active(true),
  75     m_showPreview(false),
  76     m_storedCategorizedSorting(false),
  77     m_tabsForFiles(false),
  78     m_isContextMenuOpen(false),
  79     m_assureVisibleCurrentIndex(false),
  80     m_mode(DolphinView::IconsView),
  81     m_topLayout(0),
  82     m_dolphinViewController(0),
  83     m_viewModeController(0),
  84     m_viewAccessor(proxyModel),
  85     m_selectionChangedTimer(0),
  86     m_rootUrl(),
  87     m_activeItemUrl(),
  88     m_restoredContentsPosition(),
  89     m_createdItemUrl(),
  90     m_selectedItems(),
  91     m_newFileNames()
  92 {
  93     m_topLayout = new QVBoxLayout(this);
  94     m_topLayout->setSpacing(0);
  95     m_topLayout->setMargin(0);
  96
  97     m_dolphinViewController = new DolphinViewController(this);
  98
  99     m_viewModeController = new ViewModeController(this);
 100     m_viewModeController->setUrl(url);
 101
 102     connect(m_viewModeController, SIGNAL(urlChanged(const KUrl&)),
 103             this, SIGNAL(urlChanged(const KUrl&)));
 104
 105     connect(m_dolphinViewController, SIGNAL(requestContextMenu(const QPoint&, const QList<QAction*>&)),
 106             this, SLOT(openContextMenu(const QPoint&, const QList<QAction*>&)));
 107     connect(m_dolphinViewController, SIGNAL(urlsDropped(const KFileItem&, const KUrl&, QDropEvent*)),
 108             this, SLOT(dropUrls(const KFileItem&, const KUrl&, QDropEvent*)));
 109     connect(m_dolphinViewController, SIGNAL(sortingChanged(DolphinView::Sorting)),
 110             this, SLOT(updateSorting(DolphinView::Sorting)));
 111     connect(m_dolphinViewController, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 112             this, SLOT(updateSortOrder(Qt::SortOrder)));
 113     connect(m_dolphinViewController, SIGNAL(sortFoldersFirstChanged(bool)),
 114             this, SLOT(updateSortFoldersFirst(bool)));
 115     connect(m_dolphinViewController, SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
 116             this, SLOT(updateAdditionalInfo(const KFileItemDelegate::InformationList&)));
 117     connect(m_dolphinViewController, SIGNAL(itemTriggered(const KFileItem&)),
 118             this, SLOT(triggerItem(const KFileItem&)));
 119     connect(m_dolphinViewController, SIGNAL(tabRequested(const KUrl&)),
 120             this, SIGNAL(tabRequested(const KUrl&)));
 121     connect(m_dolphinViewController, SIGNAL(activated()),
 122             this, SLOT(activate()));
 123     connect(m_dolphinViewController, SIGNAL(itemEntered(const KFileItem&)),
 124             this, SLOT(showHoverInformation(const KFileItem&)));
 125     connect(m_dolphinViewController, SIGNAL(viewportEntered()),
 126             this, SLOT(clearHoverInformation()));
 127     connect(m_dolphinViewController, SIGNAL(urlChangeRequested(KUrl)),
 128             m_viewModeController, SLOT(setUrl(KUrl)));
 129
 130     KDirLister* dirLister = m_viewAccessor.dirLister();
 131     connect(dirLister, SIGNAL(redirection(KUrl,KUrl)),
 132             this, SLOT(slotRedirection(KUrl,KUrl)));
 133     connect(dirLister, SIGNAL(completed()),
 134             this, SLOT(slotDirListerCompleted()));
 135     connect(dirLister, SIGNAL(refreshItems(const QList<QPair<KFileItem,KFileItem>>&)),
 136             this, SLOT(slotRefreshItems()));
 137
 138     // When a new item has been created by the "Create New..." menu, the item should
 139     // get selected and it must be assured that the item will get visible. As the
 140     // creation is done asynchronously, several signals must be checked:
 141     connect(&DolphinNewFileMenuObserver::instance(), SIGNAL(itemCreated(const KUrl&)),
 142             this, SLOT(observeCreatedItem(const KUrl&)));
 143
 144     m_selectionChangedTimer = new QTimer(this);
 145     m_selectionChangedTimer->setSingleShot(true);
 146     m_selectionChangedTimer->setInterval(300);
 147     connect(m_selectionChangedTimer, SIGNAL(timeout()),
 148             this, SLOT(emitSelectionChangedSignal()));
 149
 150     applyViewProperties();
 151     m_topLayout->addWidget(m_viewAccessor.layoutTarget());
 152 }
 153
 154 DolphinView::~DolphinView()
 155 {
 156 }
 157
 158 KUrl DolphinView::url() const
 159 {
 160     return m_viewModeController->url();
 161 }
 162
 163 KUrl DolphinView::rootUrl() const
 164 {
 165     const KUrl viewUrl = url();
 166     const KUrl root = m_viewAccessor.rootUrl();
 167     if (root.isEmpty() || !root.isParentOf(viewUrl)) {
 168         return viewUrl;
 169     }
 170     return root;
 171 }
 172
 173 void DolphinView::setActive(bool active)
 174 {
 175     if (active == m_active) {
 176         return;
 177     }
 178
 179     m_active = active;
 180
 181     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 182     if (active) {
 183         emitSelectionChangedSignal();
 184     } else {
 185         color.setAlpha(150);
 186     }
 187
 188     QWidget* viewport = m_viewAccessor.itemView()->viewport();
 189     QPalette palette;
 190     palette.setColor(viewport->backgroundRole(), color);
 191     viewport->setPalette(palette);
 192
 193     update();
 194
 195     if (active) {
 196         m_viewAccessor.itemView()->setFocus();
 197         emit activated();
 198     }
 199
 200     m_viewModeController->indicateActivationChange(active);
 201 }
 202
 203 bool DolphinView::isActive() const
 204 {
 205     return m_active;
 206 }
 207
 208 void DolphinView::setMode(Mode mode)
 209 {
 210     if (mode == m_mode) {
 211         return; // the wished mode is already set
 212     }
 213
 214     const int oldZoomLevel = m_viewModeController->zoomLevel();
 215     m_mode = mode;
 216
 217     // remember the currently selected items, so that they will
 218     // be restored after reloading the directory
 219     m_selectedItems = selectedItems();
 220
 221     deleteView();
 222
 223     const KUrl viewPropsUrl = rootUrl();
 224     ViewProperties props(viewPropsUrl);
 225     props.setViewMode(m_mode);
 226     createView();
 227
 228     // the file item delegate has been recreated, apply the current
 229     // additional information manually
 230     const KFileItemDelegate::InformationList infoList = props.additionalInfo();
 231     m_viewAccessor.itemDelegate()->setShowInformation(infoList);
 232     emit additionalInfoChanged();
 233
 234     // Not all view modes support categorized sorting. Adjust the sorting model
 235     // if changing the view mode results in a change of the categorized sorting
 236     // capabilities.
 237     m_storedCategorizedSorting = props.categorizedSorting();
 238     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 239     if (categorized != m_viewAccessor.proxyModel()->isCategorizedModel()) {
 240         m_viewAccessor.proxyModel()->setCategorizedModel(categorized);
 241         emit categorizedSortingChanged();
 242     }
 243
 244     emit modeChanged();
 245
 246     updateZoomLevel(oldZoomLevel);
 247     loadDirectory(viewPropsUrl);
 248 }
 249
 250 DolphinView::Mode DolphinView::mode() const
 251 {
 252     return m_mode;
 253 }
 254
 255 bool DolphinView::showPreview() const
 256 {
 257     return m_showPreview;
 258 }
 259
 260 bool DolphinView::showHiddenFiles() const
 261 {
 262     return m_viewAccessor.dirLister()->showingDotFiles();
 263 }
 264
 265 bool DolphinView::categorizedSorting() const
 266 {
 267     // If all view modes would support categorized sorting, returning
 268     // m_viewAccessor.proxyModel()->isCategorizedModel() would be the way to go. As
 269     // currently only the icons view supports caterized sorting, we remember
 270     // the stored view properties state in m_storedCategorizedSorting and
 271     // return this state. The application takes care to disable the corresponding
 272     // checkbox by checking DolphinView::supportsCategorizedSorting() to indicate
 273     // that this setting is not applied to the current view mode.
 274     return m_storedCategorizedSorting;
 275 }
 276
 277 bool DolphinView::supportsCategorizedSorting() const
 278 {
 279     return m_viewAccessor.supportsCategorizedSorting();
 280 }
 281
 282 bool DolphinView::hasSelection() const
 283 {
 284     const QAbstractItemView* view = m_viewAccessor.itemView();
 285     return (view != 0) && view->selectionModel()->hasSelection();
 286 }
 287
 288 void DolphinView::markUrlsAsSelected(const QList<KUrl>& urls)
 289 {
 290     foreach (const KUrl& url, urls) {
 291         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 292         m_selectedItems.append(item);
 293     }
 294 }
 295
 296 KFileItemList DolphinView::selectedItems() const
 297 {
 298     KFileItemList itemList;
 299     const QAbstractItemView* view = m_viewAccessor.itemView();
 300     if (view == 0) {
 301         return itemList;
 302     }
 303
 304     const QItemSelection selection = m_viewAccessor.proxyModel()->mapSelectionToSource(view->selectionModel()->selection());
 305
 306     const QModelIndexList indexList = selection.indexes();
 307     foreach (const QModelIndex &index, indexList) {
 308         KFileItem item = m_viewAccessor.dirModel()->itemForIndex(index);
 309         if (!item.isNull()) {
 310             itemList.append(item);
 311         }
 312     }
 313
 314     return itemList;
 315 }
 316
 317 int DolphinView::selectedItemsCount() const
 318 {
 319     const QAbstractItemView* view = m_viewAccessor.itemView();
 320     if (view == 0) {
 321         return 0;
 322     }
 323
 324     return view->selectionModel()->selectedIndexes().count();
 325 }
 326
 327 QItemSelectionModel* DolphinView::selectionModel() const
 328 {
 329     return m_viewAccessor.itemView()->selectionModel();
 330 }
 331
 332 void DolphinView::setZoomLevel(int level)
 333 {
 334     if (level < ZoomLevelInfo::minimumLevel()) {
 335         level = ZoomLevelInfo::minimumLevel();
 336     } else if (level > ZoomLevelInfo::maximumLevel()) {
 337         level = ZoomLevelInfo::maximumLevel();
 338     }
 339
 340     if (level != zoomLevel()) {
 341         m_viewModeController->setZoomLevel(level);
 342         emit zoomLevelChanged(level);
 343     }
 344 }
 345
 346 int DolphinView::zoomLevel() const
 347 {
 348     return m_viewModeController->zoomLevel();
 349 }
 350
 351 void DolphinView::setSorting(Sorting sorting)
 352 {
 353     if (sorting != this->sorting()) {
 354         updateSorting(sorting);
 355     }
 356 }
 357
 358 DolphinView::Sorting DolphinView::sorting() const
 359 {
 360     return m_viewAccessor.proxyModel()->sorting();
 361 }
 362
 363 void DolphinView::setSortOrder(Qt::SortOrder order)
 364 {
 365     if (sortOrder() != order) {
 366         updateSortOrder(order);
 367     }
 368 }
 369
 370 Qt::SortOrder DolphinView::sortOrder() const
 371 {
 372     return m_viewAccessor.proxyModel()->sortOrder();
 373 }
 374
 375 void DolphinView::setSortFoldersFirst(bool foldersFirst)
 376 {
 377     if (sortFoldersFirst() != foldersFirst) {
 378         updateSortFoldersFirst(foldersFirst);
 379     }
 380 }
 381
 382 bool DolphinView::sortFoldersFirst() const
 383 {
 384     return m_viewAccessor.proxyModel()->sortFoldersFirst();
 385 }
 386
 387 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 388 {
 389     const KUrl viewPropsUrl = rootUrl();
 390     ViewProperties props(viewPropsUrl);
 391     props.setAdditionalInfo(info);
 392     m_viewAccessor.itemDelegate()->setShowInformation(info);
 393
 394     emit additionalInfoChanged();
 395
 396     if (m_viewAccessor.reloadOnAdditionalInfoChange()) {
 397         loadDirectory(viewPropsUrl);
 398     }
 399 }
 400
 401 KFileItemDelegate::InformationList DolphinView::additionalInfo() const
 402 {
 403     return m_viewAccessor.itemDelegate()->showInformation();
 404 }
 405
 406 void DolphinView::reload()
 407 {
 408     QByteArray viewState;
 409     QDataStream saveStream(&viewState, QIODevice::WriteOnly);
 410     saveState(saveStream);
 411     m_selectedItems= selectedItems();
 412
 413     setUrl(url());
 414     loadDirectory(url(), true);
 415
 416     QDataStream restoreStream(viewState);
 417     restoreState(restoreStream);
 418 }
 419
 420 void DolphinView::stopLoading()
 421 {
 422     m_viewAccessor.dirLister()->stop();
 423 }
 424
 425 void DolphinView::refresh()
 426 {
 427     const bool oldActivationState = m_active;
 428     const int oldZoomLevel = m_viewModeController->zoomLevel();
 429     m_active = true;
 430
 431     createView();
 432     applyViewProperties();
 433     reload();
 434
 435     setActive(oldActivationState);
 436     updateZoomLevel(oldZoomLevel);
 437 }
 438
 439 void DolphinView::setNameFilter(const QString& nameFilter)
 440 {
 441     m_viewModeController->setNameFilter(nameFilter);
 442 }
 443
 444 void DolphinView::calculateItemCount(int& fileCount,
 445                                      int& folderCount,
 446                                      KIO::filesize_t& totalFileSize) const
 447 {
 448     foreach (const KFileItem& item, m_viewAccessor.dirLister()->items()) {
 449         if (item.isDir()) {
 450             ++folderCount;
 451         } else {
 452             ++fileCount;
 453             totalFileSize += item.size();
 454         }
 455     }
 456 }
 457
 458 QString DolphinView::statusBarText() const
 459 {
 460     QString text;
 461     int folderCount = 0;
 462     int fileCount = 0;
 463     KIO::filesize_t totalFileSize = 0;
 464
 465     if (hasSelection()) {
 466         // give a summary of the status of the selected files
 467         const KFileItemList list = selectedItems();
 468         if (list.isEmpty()) {
 469             // when an item is triggered, it is temporary selected but selectedItems()
 470             // will return an empty list
 471             return text;
 472         }
 473
 474         KFileItemList::const_iterator it = list.begin();
 475         const KFileItemList::const_iterator end = list.end();
 476         while (it != end) {
 477             const KFileItem& item = *it;
 478             if (item.isDir()) {
 479                 ++folderCount;
 480             } else {
 481                 ++fileCount;
 482                 totalFileSize += item.size();
 483             }
 484             ++it;
 485         }
 486
 487         if (folderCount + fileCount == 1) {
 488             // if only one item is selected, show the filename
 489             const QString name = list.first().text();
 490             text = (folderCount == 1) ? i18nc("@info:status", "<filename>%1</filename> selected", name) :
 491                                         i18nc("@info:status", "<filename>%1</filename> selected (%2)",
 492                                               name, KIO::convertSize(totalFileSize));
 493         } else {
 494             // at least 2 items are selected
 495             const QString foldersText = i18ncp("@info:status", "1 Folder selected", "%1 Folders selected", folderCount);
 496             const QString filesText = i18ncp("@info:status", "1 File selected", "%1 Files selected", fileCount);
 497             if ((folderCount > 0) && (fileCount > 0)) {
 498                 text = i18nc("@info:status folders, files (size)", "%1, %2 (%3)",
 499                              foldersText, filesText, KIO::convertSize(totalFileSize));
 500             } else if (fileCount > 0) {
 501                 text = i18nc("@info:status files (size)", "%1 (%2)", filesText, KIO::convertSize(totalFileSize));
 502             } else {
 503                 Q_ASSERT(folderCount > 0);
 504                 text = foldersText;
 505             }
 506         }
 507     } else {
 508         calculateItemCount(fileCount, folderCount, totalFileSize);
 509         text = KIO::itemsSummaryString(fileCount + folderCount,
 510                                        fileCount, folderCount,
 511                                        totalFileSize, true);
 512     }
 513
 514     return text;
 515 }
 516
 517 QList<QAction*> DolphinView::versionControlActions(const KFileItemList& items) const
 518 {
 519     return m_dolphinViewController->versionControlActions(items);
 520 }
 521
 522 void DolphinView::setUrl(const KUrl& url)
 523 {
 524     if (m_viewModeController->url() == url) {
 525         return;
 526     }
 527
 528     // The selection model might change in the case of the column view. Disconnect
 529     // from the current selection model and reconnect later after the URL switch.
 530     const bool hadSelection = hasSelection();
 531     QAbstractItemView* view = m_viewAccessor.itemView();
 532     disconnect(view->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 533                this, SLOT(slotSelectionChanged(QItemSelection, QItemSelection)));
 534
 535     m_newFileNames.clear();
 536
 537     m_viewModeController->setUrl(url); // emits urlChanged, which we forward
 538     m_viewAccessor.prepareUrlChange(url);
 539     applyViewProperties();
 540     loadDirectory(url);
 541
 542     // When changing the URL there is no need to keep the version
 543     // data of the previous URL.
 544     m_viewAccessor.dirModel()->clearVersionData();
 545
 546     emit startedPathLoading(url);
 547
 548     // Reconnect to the (probably) new selection model
 549     view = m_viewAccessor.itemView();
 550     connect(view->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 551             this, SLOT(slotSelectionChanged(QItemSelection, QItemSelection)));
 552     if (hadSelection || hasSelection()) {
 553         emitSelectionChangedSignal();
 554     }
 555 }
 556
 557 void DolphinView::selectAll()
 558 {
 559     m_viewAccessor.itemView()->selectAll();
 560 }
 561
 562 void DolphinView::invertSelection()
 563 {
 564     QItemSelectionModel* selectionModel = m_viewAccessor.itemView()->selectionModel();
 565     const QAbstractItemModel* itemModel = selectionModel->model();
 566
 567     const QModelIndex topLeft = itemModel->index(0, 0);
 568     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 569                                                      itemModel->columnCount() - 1);
 570
 571     const QItemSelection selection(topLeft, bottomRight);
 572     selectionModel->select(selection, QItemSelectionModel::Toggle);
 573 }
 574
 575 void DolphinView::clearSelection()
 576 {
 577     m_viewAccessor.itemView()->clearSelection();
 578 }
 579
 580 void DolphinView::renameSelectedItems()
 581 {
 582     KFileItemList items = selectedItems();
 583     const int itemCount = items.count();
 584     if (itemCount < 1) {
 585         return;
 586     }
 587
 588     if ((itemCount == 1) && DolphinSettings::instance().generalSettings()->renameInline()) {
 589         const QModelIndex dirIndex = m_viewAccessor.dirModel()->indexForItem(items.first());
 590         const QModelIndex proxyIndex = m_viewAccessor.proxyModel()->mapFromSource(dirIndex);
 591         m_viewAccessor.itemView()->edit(proxyIndex);
 592     } else {
 593         RenameDialog* dialog = new RenameDialog(this, items);
 594         dialog->setAttribute(Qt::WA_DeleteOnClose);
 595         dialog->show();
 596         dialog->raise();
 597         dialog->activateWindow();
 598     }
 599 }
 600
 601 void DolphinView::trashSelectedItems()
 602 {
 603     const KUrl::List list = simplifiedSelectedUrls();
 604     KonqOperations::del(this, KonqOperations::TRASH, list);
 605 }
 606
 607 void DolphinView::deleteSelectedItems()
 608 {
 609     const KUrl::List list = simplifiedSelectedUrls();
 610     const bool del = KonqOperations::askDeleteConfirmation(list,
 611                      KonqOperations::DEL,
 612                      KonqOperations::DEFAULT_CONFIRMATION,
 613                      this);
 614
 615     if (del) {
 616         KIO::Job* job = KIO::del(list);
 617         connect(job, SIGNAL(result(KJob*)),
 618                 this, SLOT(slotDeleteFileFinished(KJob*)));
 619     }
 620 }
 621
 622 void DolphinView::cutSelectedItems()
 623 {
 624     QMimeData* mimeData = selectionMimeData();
 625     KonqMimeData::addIsCutSelection(mimeData, true);
 626     QApplication::clipboard()->setMimeData(mimeData);
 627 }
 628
 629 void DolphinView::copySelectedItems()
 630 {
 631     QMimeData* mimeData = selectionMimeData();
 632     QApplication::clipboard()->setMimeData(mimeData);
 633 }
 634
 635 void DolphinView::paste()
 636 {
 637     pasteToUrl(url());
 638 }
 639
 640 void DolphinView::pasteIntoFolder()
 641 {
 642     const KFileItemList items = selectedItems();
 643     if ((items.count() == 1) && items.first().isDir()) {
 644         pasteToUrl(items.first().url());
 645     }
 646 }
 647
 648 void DolphinView::setShowPreview(bool show)
 649 {
 650     if (m_showPreview == show) {
 651         return;
 652     }
 653
 654     const KUrl viewPropsUrl = rootUrl();
 655     ViewProperties props(viewPropsUrl);
 656     props.setShowPreview(show);
 657
 658     m_showPreview = show;
 659     const int oldZoomLevel = m_viewModeController->zoomLevel();
 660     emit showPreviewChanged();
 661
 662     // Enabling or disabling the preview might change the icon size of the view.
 663     // As the view does not emit a signal when the icon size has been changed,
 664     // the used zoom level of the controller must be adjusted manually:
 665     updateZoomLevel(oldZoomLevel);
 666 }
 667
 668 void DolphinView::setShowHiddenFiles(bool show)
 669 {
 670     if (m_viewAccessor.dirLister()->showingDotFiles() == show) {
 671         return;
 672     }
 673
 674     const KUrl viewPropsUrl = rootUrl();
 675     ViewProperties props(viewPropsUrl);
 676     props.setShowHiddenFiles(show);
 677
 678     m_viewAccessor.dirLister()->setShowingDotFiles(show);
 679     emit showHiddenFilesChanged();
 680 }
 681
 682 void DolphinView::setCategorizedSorting(bool categorized)
 683 {
 684     if (categorized == categorizedSorting()) {
 685         return;
 686     }
 687
 688     // setCategorizedSorting(true) may only get invoked
 689     // if the view supports categorized sorting
 690     Q_ASSERT(!categorized || supportsCategorizedSorting());
 691
 692     ViewProperties props(rootUrl());
 693     props.setCategorizedSorting(categorized);
 694     props.save();
 695
 696     m_storedCategorizedSorting = categorized;
 697     m_viewAccessor.proxyModel()->setCategorizedModel(categorized);
 698
 699     emit categorizedSortingChanged();
 700 }
 701
 702 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 703 {
 704     QWidget::mouseReleaseEvent(event);
 705     setActive(true);
 706 }
 707
 708 bool DolphinView::eventFilter(QObject* watched, QEvent* event)
 709 {
 710     switch (event->type()) {
 711     case QEvent::FocusIn:
 712         if (watched == m_viewAccessor.itemView()) {
 713             m_dolphinViewController->requestActivation();
 714         }
 715         break;
 716
 717     case QEvent::DragEnter:
 718         if (watched == m_viewAccessor.itemView()->viewport()) {
 719             setActive(true);
 720         }
 721         break;
 722
 723     case QEvent::KeyPress:
 724         if (watched == m_viewAccessor.itemView()) {
 725             // clear the selection when Escape has been pressed
 726             QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
 727             if (keyEvent->key() == Qt::Key_Escape) {
 728                 clearSelection();
 729             }
 730         }
 731         break;
 732
 733     case QEvent::Wheel:
 734         if (watched == m_viewAccessor.itemView()->viewport()) {
 735             // Ctrl+wheel events should cause icon zooming, but not if the left mouse button is pressed
 736             // (the user is probably trying to scroll during a selection in that case)
 737             QWheelEvent* wheelEvent = static_cast<QWheelEvent*>(event);
 738             if (wheelEvent->modifiers() & Qt::ControlModifier && !(wheelEvent->buttons() & Qt::LeftButton)) {
 739                 const int delta = wheelEvent->delta();
 740                 const int level = zoomLevel();
 741                 if (delta > 0) {
 742                     setZoomLevel(level + 1);
 743                 } else if (delta < 0) {
 744                     setZoomLevel(level - 1);
 745                 }
 746                 return true;
 747             }
 748         }
 749         break;
 750
 751     default:
 752         break;
 753     }
 754
 755     return QWidget::eventFilter(watched, event);
 756 }
 757
 758 void DolphinView::activate()
 759 {
 760     setActive(true);
 761 }
 762
 763 void DolphinView::triggerItem(const KFileItem& item)
 764 {
 765     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 766     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 767         // items are selected by the user, hence don't trigger the
 768         // item specified by 'index'
 769         return;
 770     }
 771
 772     // TODO: the m_isContextMenuOpen check is a workaround for Qt-issue 207192
 773     if (item.isNull() || m_isContextMenuOpen) {
 774         return;
 775     }
 776
 777     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 778 }
 779
 780 void DolphinView::slotSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 781 {
 782     const int count = selectedItemsCount();
 783     const bool selectionStateChanged = ((count >  0) && (selected.count() == count)) ||
 784                                        ((count == 0) && !deselected.isEmpty());
 785
 786     // If nothing has been selected before and something got selected (or if something
 787     // was selected before and now nothing is selected) the selectionChangedSignal must
 788     // be emitted asynchronously as fast as possible to update the edit-actions.
 789     m_selectionChangedTimer->setInterval(selectionStateChanged ? 0 : 300);
 790     m_selectionChangedTimer->start();
 791 }
 792
 793 void DolphinView::emitSelectionChangedSignal()
 794 {
 795     m_selectionChangedTimer->stop();
 796     emit selectionChanged(selectedItems());
 797 }
 798
 799 void DolphinView::openContextMenu(const QPoint& pos,
 800                                   const QList<QAction*>& customActions)
 801 {
 802     KFileItem item;
 803     const QModelIndex index = m_viewAccessor.itemView()->indexAt(pos);
 804     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 805         const QModelIndex dolphinModelIndex = m_viewAccessor.proxyModel()->mapToSource(index);
 806         item = m_viewAccessor.dirModel()->itemForIndex(dolphinModelIndex);
 807     }
 808
 809     m_isContextMenuOpen = true; // TODO: workaround for Qt-issue 207192
 810     emit requestContextMenu(item, url(), customActions);
 811     m_isContextMenuOpen = false;
 812 }
 813
 814 void DolphinView::dropUrls(const KFileItem& destItem,
 815                            const KUrl& destPath,
 816                            QDropEvent* event)
 817 {
 818     addNewFileNames(event->mimeData());
 819     DragAndDropHelper::instance().dropUrls(destItem, destPath, event, this);
 820 }
 821
 822 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 823 {
 824     ViewProperties props(rootUrl());
 825     props.setSorting(sorting);
 826
 827     m_viewAccessor.proxyModel()->setSorting(sorting);
 828
 829     emit sortingChanged(sorting);
 830 }
 831
 832 void DolphinView::updateSortOrder(Qt::SortOrder order)
 833 {
 834     ViewProperties props(rootUrl());
 835     props.setSortOrder(order);
 836
 837     m_viewAccessor.proxyModel()->setSortOrder(order);
 838
 839     emit sortOrderChanged(order);
 840 }
 841
 842 void DolphinView::updateSortFoldersFirst(bool foldersFirst)
 843 {
 844     ViewProperties props(rootUrl());
 845     props.setSortFoldersFirst(foldersFirst);
 846
 847     m_viewAccessor.proxyModel()->setSortFoldersFirst(foldersFirst);
 848
 849     emit sortFoldersFirstChanged(foldersFirst);
 850 }
 851
 852 void DolphinView::updateAdditionalInfo(const KFileItemDelegate::InformationList& info)
 853 {
 854     ViewProperties props(rootUrl());
 855     props.setAdditionalInfo(info);
 856     props.save();
 857
 858     m_viewAccessor.itemDelegate()->setShowInformation(info);
 859
 860     emit additionalInfoChanged();
 861 }
 862
 863 void DolphinView::updateAdditionalInfoActions(KActionCollection* collection)
 864 {
 865     const AdditionalInfoAccessor& infoAccessor = AdditionalInfoAccessor::instance();
 866
 867     const KFileItemDelegate::InformationList checkedInfo = m_viewAccessor.itemDelegate()->showInformation();
 868     const KFileItemDelegate::InformationList infoKeys = infoAccessor.keys();
 869
 870     const bool enable = (m_mode == DolphinView::DetailsView) ||
 871                         (m_mode == DolphinView::IconsView);
 872
 873     foreach (const KFileItemDelegate::Information& info, infoKeys) {
 874         const QString name = infoAccessor.actionCollectionName(info, AdditionalInfoAccessor::AdditionalInfoType);
 875         QAction* action = collection->action(name);
 876         Q_ASSERT(action != 0);
 877         action->setEnabled(enable);
 878         action->setChecked(checkedInfo.contains(info));
 879     }
 880 }
 881
 882 QPair<bool, QString> DolphinView::pasteInfo() const
 883 {
 884     return KonqOperations::pasteInfo(url());
 885 }
 886
 887 void DolphinView::setTabsForFilesEnabled(bool tabsForFiles)
 888 {
 889     m_tabsForFiles = tabsForFiles;
 890 }
 891
 892 bool DolphinView::isTabsForFilesEnabled() const
 893 {
 894     return m_tabsForFiles;
 895 }
 896
 897 bool DolphinView::itemsExpandable() const
 898 {
 899     return m_viewAccessor.itemsExpandable();
 900 }
 901
 902 void DolphinView::restoreState(QDataStream& stream)
 903 {
 904     // current item
 905     stream >> m_activeItemUrl;
 906
 907     // view position
 908     stream >> m_restoredContentsPosition;
 909
 910     // expanded folders (only relevant for the details view - will be ignored by the view in other view modes)
 911     QSet<KUrl> urlsToExpand;
 912     stream >> urlsToExpand;
 913     const DolphinDetailsViewExpander* expander = m_viewAccessor.setExpandedUrls(urlsToExpand);
 914     if (expander != 0) {
 915         m_expanderActive = true;
 916         connect (expander, SIGNAL(completed()), this, SLOT(slotLoadingCompleted()));
 917     }
 918     else {
 919         m_expanderActive = false;
 920     }
 921 }
 922
 923 void DolphinView::saveState(QDataStream& stream)
 924 {
 925     // current item
 926     KFileItem currentItem;
 927     const QAbstractItemView* view = m_viewAccessor.itemView();
 928
 929     if (view != 0) {
 930         const QModelIndex proxyIndex = view->currentIndex();
 931         const QModelIndex dirModelIndex = m_viewAccessor.proxyModel()->mapToSource(proxyIndex);
 932         currentItem = m_viewAccessor.dirModel()->itemForIndex(dirModelIndex);
 933     }
 934
 935     KUrl currentUrl;
 936     if (!currentItem.isNull()) {
 937         currentUrl = currentItem.url();
 938     }
 939
 940     stream << currentUrl;
 941
 942     // view position
 943     const int x = view->horizontalScrollBar()->value();
 944     const int y = view->verticalScrollBar()->value();
 945     stream << QPoint(x, y);
 946
 947     // expanded folders (only relevant for the details view - the set will be empty in other view modes)
 948     stream << m_viewAccessor.expandedUrls();
 949 }
 950
 951 void DolphinView::observeCreatedItem(const KUrl& url)
 952 {
 953     m_createdItemUrl = url;
 954     connect(m_viewAccessor.dirModel(), SIGNAL(rowsInserted(const QModelIndex&, int, int)),
 955             this, SLOT(selectAndScrollToCreatedItem()));
 956 }
 957
 958 void DolphinView::selectAndScrollToCreatedItem()
 959 {
 960     const QModelIndex dirIndex = m_viewAccessor.dirModel()->indexForUrl(m_createdItemUrl);
 961     if (dirIndex.isValid()) {
 962         const QModelIndex proxyIndex = m_viewAccessor.proxyModel()->mapFromSource(dirIndex);
 963         m_viewAccessor.itemView()->setCurrentIndex(proxyIndex);
 964     }
 965
 966     disconnect(m_viewAccessor.dirModel(), SIGNAL(rowsInserted(const QModelIndex&, int, int)),
 967                this, SLOT(selectAndScrollToCreatedItem()));
 968     m_createdItemUrl = KUrl();
 969 }
 970
 971 void DolphinView::showHoverInformation(const KFileItem& item)
 972 {
 973     emit requestItemInfo(item);
 974 }
 975
 976 void DolphinView::clearHoverInformation()
 977 {
 978     emit requestItemInfo(KFileItem());
 979 }
 980
 981 void DolphinView::slotDeleteFileFinished(KJob* job)
 982 {
 983     if (job->error() == 0) {
 984         emit operationCompletedMessage(i18nc("@info:status", "Delete operation completed."));
 985     } else if (job->error() != KIO::ERR_USER_CANCELED) {
 986         emit errorMessage(job->errorString());
 987     }
 988 }
 989
 990 void DolphinView::slotDirListerCompleted()
 991 {
 992     if (!m_expanderActive) {
 993         slotLoadingCompleted();
 994     }
 995
 996     if (!m_newFileNames.isEmpty()) {
 997         // select all newly added items created by a paste operation or
 998         // a drag & drop operation, and clear the previous selection
 999         m_viewAccessor.itemView()->clearSelection();
1000         const int rowCount = m_viewAccessor.proxyModel()->rowCount();
1001         QItemSelection selection;
1002         for (int row = 0; row < rowCount; ++row) {
1003             const QModelIndex proxyIndex = m_viewAccessor.proxyModel()->index(row, 0);
1004             const QModelIndex dirIndex = m_viewAccessor.proxyModel()->mapToSource(proxyIndex);
1005             const KUrl url = m_viewAccessor.dirModel()->itemForIndex(dirIndex).url();
1006             if (m_newFileNames.contains(url.fileName())) {
1007                 selection.merge(QItemSelection(proxyIndex, proxyIndex), QItemSelectionModel::Select);
1008             }
1009         }
1010         m_viewAccessor.itemView()->selectionModel()->select(selection, QItemSelectionModel::Select);
1011
1012         m_newFileNames.clear();
1013     }
1014 }
1015
1016 void DolphinView::slotLoadingCompleted()
1017 {
1018     m_expanderActive = false;
1019
1020     if (!m_activeItemUrl.isEmpty()) {
1021         // assure that the current item remains visible
1022         const QModelIndex dirIndex = m_viewAccessor.dirModel()->indexForUrl(m_activeItemUrl);
1023         if (dirIndex.isValid()) {
1024             const QModelIndex proxyIndex = m_viewAccessor.proxyModel()->mapFromSource(dirIndex);
1025             QAbstractItemView* view = m_viewAccessor.itemView();
1026             const bool clearSelection = !hasSelection();
1027             view->setCurrentIndex(proxyIndex);
1028             if (clearSelection) {
1029                 view->clearSelection();
1030             }
1031             m_activeItemUrl.clear();
1032         }
1033     }
1034
1035     if (!m_selectedItems.isEmpty()) {
1036         const KUrl& baseUrl = url();
1037         KUrl url;
1038         QItemSelection newSelection;
1039         foreach(const KFileItem& item, m_selectedItems) {
1040             url = item.url().upUrl();
1041             if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1042                 QModelIndex index = m_viewAccessor.proxyModel()->mapFromSource(m_viewAccessor.dirModel()->indexForItem(item));
1043                 newSelection.select(index, index);
1044             }
1045         }
1046         m_viewAccessor.itemView()->selectionModel()->select(newSelection,
1047                                                             QItemSelectionModel::ClearAndSelect
1048                                                             | QItemSelectionModel::Current);
1049         m_selectedItems.clear();
1050     }
1051
1052     // Restore the contents position. This has to be done using a Qt::QueuedConnection
1053     // because the view might not be in its final state yet.
1054     QMetaObject::invokeMethod(this, "restoreContentsPosition", Qt::QueuedConnection);
1055
1056     emit finishedPathLoading(url());
1057 }
1058
1059 void DolphinView::slotRefreshItems()
1060 {
1061     if (m_assureVisibleCurrentIndex) {
1062         m_assureVisibleCurrentIndex = false;
1063         m_viewAccessor.itemView()->scrollTo(m_viewAccessor.itemView()->currentIndex());
1064     }
1065 }
1066
1067 void DolphinView::loadDirectory(const KUrl& url, bool reload)
1068 {
1069     if (!url.isValid()) {
1070         const QString location(url.pathOrUrl());
1071         if (location.isEmpty()) {
1072             emit errorMessage(i18nc("@info:status", "The location is empty."));
1073         } else {
1074             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
1075         }
1076         return;
1077     }
1078
1079     KDirLister* dirLister = m_viewAccessor.dirLister();
1080     dirLister->openUrl(url, reload ? KDirLister::Reload : KDirLister::NoFlags);
1081 }
1082
1083 void DolphinView::applyViewProperties()
1084 {
1085     const ViewProperties props(rootUrl());
1086
1087     const Mode mode = props.viewMode();
1088     if (m_mode != mode) {
1089         const int oldZoomLevel = m_viewModeController->zoomLevel();
1090
1091         m_mode = mode;
1092         createView();
1093         emit modeChanged();
1094
1095         updateZoomLevel(oldZoomLevel);
1096     }
1097     if (m_viewAccessor.itemView() == 0) {
1098         createView();
1099     }
1100     Q_ASSERT(m_viewAccessor.itemView() != 0);
1101     Q_ASSERT(m_viewAccessor.itemDelegate() != 0);
1102
1103     const bool showHiddenFiles = props.showHiddenFiles();
1104     if (showHiddenFiles != m_viewAccessor.dirLister()->showingDotFiles()) {
1105         m_viewAccessor.dirLister()->setShowingDotFiles(showHiddenFiles);
1106         emit showHiddenFilesChanged();
1107     }
1108
1109     m_storedCategorizedSorting = props.categorizedSorting();
1110     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
1111     if (categorized != m_viewAccessor.proxyModel()->isCategorizedModel()) {
1112         m_viewAccessor.proxyModel()->setCategorizedModel(categorized);
1113         emit categorizedSortingChanged();
1114     }
1115
1116     const DolphinView::Sorting sorting = props.sorting();
1117     if (sorting != m_viewAccessor.proxyModel()->sorting()) {
1118         m_viewAccessor.proxyModel()->setSorting(sorting);
1119         emit sortingChanged(sorting);
1120     }
1121
1122     const Qt::SortOrder sortOrder = props.sortOrder();
1123     if (sortOrder != m_viewAccessor.proxyModel()->sortOrder()) {
1124         m_viewAccessor.proxyModel()->setSortOrder(sortOrder);
1125         emit sortOrderChanged(sortOrder);
1126     }
1127
1128     const bool sortFoldersFirst = props.sortFoldersFirst();
1129     if (sortFoldersFirst != m_viewAccessor.proxyModel()->sortFoldersFirst()) {
1130         m_viewAccessor.proxyModel()->setSortFoldersFirst(sortFoldersFirst);
1131         emit sortFoldersFirstChanged(sortFoldersFirst);
1132     }
1133
1134     KFileItemDelegate::InformationList info = props.additionalInfo();
1135     if (info != m_viewAccessor.itemDelegate()->showInformation()) {
1136         m_viewAccessor.itemDelegate()->setShowInformation(info);
1137         emit additionalInfoChanged();
1138     }
1139
1140     const bool showPreview = props.showPreview();
1141     if (showPreview != m_showPreview) {
1142         m_showPreview = showPreview;
1143         const int oldZoomLevel = m_viewModeController->zoomLevel();
1144         emit showPreviewChanged();
1145
1146         // Enabling or disabling the preview might change the icon size of the view.
1147         // As the view does not emit a signal when the icon size has been changed,
1148         // the used zoom level of the controller must be adjusted manually:
1149         updateZoomLevel(oldZoomLevel);
1150     }
1151 }
1152
1153 void DolphinView::createView()
1154 {
1155     deleteView();
1156
1157     Q_ASSERT(m_viewAccessor.itemView() == 0);
1158     Q_ASSERT(m_dolphinViewController->itemView() == 0);
1159     m_viewAccessor.createView(this, m_dolphinViewController, m_viewModeController, m_mode);
1160
1161     QAbstractItemView* view = m_viewAccessor.itemView();
1162     Q_ASSERT(view != 0);
1163     view->installEventFilter(this);
1164     view->viewport()->installEventFilter(this);
1165
1166     m_dolphinViewController->setItemView(view);
1167
1168     const int zoomLevel = ZoomLevelInfo::zoomLevelForIconSize(view->iconSize());
1169     m_viewModeController->setZoomLevel(zoomLevel);
1170
1171     connect(view->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
1172             this, SLOT(slotSelectionChanged(QItemSelection, QItemSelection)));
1173
1174     setFocusProxy(m_viewAccessor.layoutTarget());
1175     m_topLayout->insertWidget(1, m_viewAccessor.layoutTarget());
1176 }
1177
1178 void DolphinView::deleteView()
1179 {
1180     QAbstractItemView* view = m_viewAccessor.itemView();
1181     Q_ASSERT((m_dolphinViewController->itemView() == 0) || (m_dolphinViewController->itemView() == view));
1182     m_dolphinViewController->setItemView(0);
1183
1184     if (view != 0) {
1185         if (view->selectionModel() != 0) {
1186             disconnect(view->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
1187                        this, SLOT(slotSelectionChanged(QItemSelection, QItemSelection)));
1188         }
1189
1190         // It's important to set the keyboard focus to the parent
1191         // before deleting the view: Otherwise when having a split
1192         // view the other view will get the focus and will request
1193         // an activation (see DolphinView::eventFilter()).
1194         setFocusProxy(0);
1195         setFocus();
1196
1197         m_viewModeController->disconnect(view);
1198
1199         m_viewAccessor.deleteView();
1200     }
1201 }
1202
1203 void DolphinView::pasteToUrl(const KUrl& url)
1204 {
1205     addNewFileNames(QApplication::clipboard()->mimeData());
1206     KonqOperations::doPaste(this, url);
1207 }
1208
1209 void DolphinView::updateZoomLevel(int oldZoomLevel)
1210 {
1211     const int newZoomLevel = ZoomLevelInfo::zoomLevelForIconSize(m_viewAccessor.itemView()->iconSize());
1212     if (oldZoomLevel != newZoomLevel) {
1213         m_viewModeController->setZoomLevel(newZoomLevel);
1214         emit zoomLevelChanged(newZoomLevel);
1215     }
1216 }
1217
1218 KUrl::List DolphinView::simplifiedSelectedUrls() const
1219 {
1220     KUrl::List urls;
1221
1222     const KFileItemList items = selectedItems();
1223     foreach (const KFileItem &item, items) {
1224         urls.append(item.url());
1225     }
1226
1227
1228     if (itemsExpandable()) {
1229         urls = KDirModel::simplifiedUrlList(urls);
1230     }
1231
1232     return urls;
1233 }
1234
1235 QMimeData* DolphinView::selectionMimeData() const
1236 {
1237     const QAbstractItemView* view = m_viewAccessor.itemView();
1238     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
1239     const QItemSelection selection = m_viewAccessor.proxyModel()->mapSelectionToSource(view->selectionModel()->selection());
1240     return m_viewAccessor.dirModel()->mimeData(selection.indexes());
1241 }
1242
1243 void DolphinView::addNewFileNames(const QMimeData* mimeData)
1244 {
1245     const KUrl::List urls = KUrl::List::fromMimeData(mimeData);
1246     foreach (const KUrl& url, urls) {
1247         m_newFileNames.insert(url.fileName());
1248     }
1249 }
1250
1251 DolphinView::ViewAccessor::ViewAccessor(DolphinSortFilterProxyModel* proxyModel) :
1252     m_iconsView(0),
1253     m_detailsView(0),
1254     m_columnsContainer(0),
1255     m_proxyModel(proxyModel),
1256     m_dragSource(0)
1257 {
1258 }
1259
1260 DolphinView::ViewAccessor::~ViewAccessor()
1261 {
1262     delete m_dragSource;
1263     m_dragSource = 0;
1264 }
1265
1266 void DolphinView::ViewAccessor::createView(QWidget* parent,
1267                                            DolphinViewController* dolphinViewController,
1268                                            const ViewModeController* viewModeController,
1269                                            Mode mode)
1270 {
1271     Q_ASSERT(itemView() == 0);
1272
1273     switch (mode) {
1274     case IconsView:
1275         m_iconsView = new DolphinIconsView(parent,
1276                                            dolphinViewController,
1277                                            viewModeController,
1278                                            m_proxyModel);
1279         break;
1280
1281     case DetailsView:
1282         m_detailsView = new DolphinDetailsView(parent,
1283                                                dolphinViewController,
1284                                                viewModeController,
1285                                                m_proxyModel);
1286         break;
1287
1288     case ColumnView:
1289         m_columnsContainer = new DolphinColumnViewContainer(parent,
1290                                                             dolphinViewController,
1291                                                             viewModeController);
1292         break;
1293
1294     default:
1295         Q_ASSERT(false);
1296     }
1297 }
1298
1299 void DolphinView::ViewAccessor::deleteView()
1300 {
1301     if (m_columnsContainer != 0) {
1302         m_columnsContainer->close();
1303         m_columnsContainer->disconnect();
1304         m_columnsContainer->deleteLater();
1305         m_columnsContainer = 0;
1306     } else {
1307         QAbstractItemView* view = itemView();
1308         if (view != 0) {
1309             view->close();
1310             view->disconnect();
1311
1312             if (DragAndDropHelper::instance().isDragSource(view)) {
1313                 // The view is a drag source (the feature "Open folders
1314                 // during drag operations" is used). Deleting the view
1315                 // during an ongoing drag operation is not allowed, so
1316                 // this will postponed.
1317                 if (m_dragSource != 0) {
1318                     // the old stored view is obviously not the drag source anymore
1319                     m_dragSource->deleteLater();
1320                     m_dragSource = 0;
1321                 }
1322                 view->hide();
1323                 m_dragSource = view;
1324             } else {
1325                 view->deleteLater();
1326                 view = 0;
1327             }
1328         }
1329
1330         m_iconsView = 0;
1331         m_detailsView = 0;
1332     }
1333 }
1334
1335
1336 void DolphinView::ViewAccessor::prepareUrlChange(const KUrl& url)
1337 {
1338     if (m_columnsContainer != 0) {
1339         m_columnsContainer->showColumn(url);
1340     }
1341 }
1342
1343 QAbstractItemView* DolphinView::ViewAccessor::itemView() const
1344 {
1345     if (m_iconsView != 0) {
1346         return m_iconsView;
1347     }
1348
1349     if (m_detailsView != 0) {
1350         return m_detailsView;
1351     }
1352
1353     if (m_columnsContainer != 0) {
1354         return m_columnsContainer->activeColumn();
1355     }
1356
1357     return 0;
1358 }
1359
1360 KFileItemDelegate* DolphinView::ViewAccessor::itemDelegate() const
1361 {
1362     return static_cast<KFileItemDelegate*>(itemView()->itemDelegate());
1363 }
1364
1365 QWidget* DolphinView::ViewAccessor::layoutTarget() const
1366 {
1367     if (m_columnsContainer != 0) {
1368         return m_columnsContainer;
1369     }
1370     return itemView();
1371 }
1372
1373 KUrl DolphinView::ViewAccessor::rootUrl() const
1374 {
1375     return (m_columnsContainer != 0) ? m_columnsContainer->rootUrl() : KUrl();
1376 }
1377
1378 bool DolphinView::ViewAccessor::supportsCategorizedSorting() const
1379 {
1380     return m_iconsView != 0;
1381 }
1382
1383 bool DolphinView::ViewAccessor::itemsExpandable() const
1384 {
1385     return (m_detailsView != 0) && m_detailsView->itemsExpandable();
1386 }
1387
1388
1389 QSet<KUrl> DolphinView::ViewAccessor::expandedUrls() const
1390 {
1391     if (m_detailsView != 0) {
1392         return m_detailsView->expandedUrls();
1393     }
1394
1395     return QSet<KUrl>();
1396 }
1397
1398 const DolphinDetailsViewExpander* DolphinView::ViewAccessor::setExpandedUrls(const QSet<KUrl>& urlsToExpand)
1399 {
1400     if ((m_detailsView != 0) && m_detailsView->itemsExpandable() && !urlsToExpand.isEmpty()) {
1401         // Check if another expander is already active and stop it if necessary.
1402         if(!m_detailsViewExpander.isNull()) {
1403             m_detailsViewExpander->stop();
1404         }
1405
1406         m_detailsViewExpander = new DolphinDetailsViewExpander(m_detailsView, urlsToExpand);
1407         return m_detailsViewExpander;
1408     }
1409     else {
1410         return 0;
1411     }
1412 }
1413
1414 bool DolphinView::ViewAccessor::reloadOnAdditionalInfoChange() const
1415 {
1416     // the details view requires no reloading of the directory, as it maps
1417     // the file item delegate info to its columns internally
1418     return m_detailsView != 0;
1419 }
1420
1421 DolphinModel* DolphinView::ViewAccessor::dirModel() const
1422 {
1423     return static_cast<DolphinModel*>(proxyModel()->sourceModel());
1424 }
1425
1426 DolphinSortFilterProxyModel* DolphinView::ViewAccessor::proxyModel() const
1427 {
1428     if (m_columnsContainer != 0) {
1429         return static_cast<DolphinSortFilterProxyModel*>(m_columnsContainer->activeColumn()->model());
1430     }
1431     return m_proxyModel;
1432 }
1433
1434 KDirLister* DolphinView::ViewAccessor::dirLister() const
1435 {
1436     return dirModel()->dirLister();
1437 }
1438
1439 void DolphinView::slotRedirection(const KUrl& oldUrl, const KUrl& newUrl)
1440 {
1441     if (oldUrl.equals(url(), KUrl::CompareWithoutTrailingSlash)) {
1442         emit redirection(oldUrl, newUrl);
1443         m_viewModeController->redirectToUrl(newUrl); // #186947
1444     }
1445 }
1446
1447 void DolphinView::restoreContentsPosition()
1448 {
1449     if (!m_restoredContentsPosition.isNull()) {
1450         const int x = m_restoredContentsPosition.x();
1451         const int y = m_restoredContentsPosition.y();
1452         m_restoredContentsPosition = QPoint();
1453
1454         QAbstractItemView* view = m_viewAccessor.itemView();
1455         Q_ASSERT(view != 0);
1456         view->horizontalScrollBar()->setValue(x);
1457         view->verticalScrollBar()->setValue(y);
1458     }
1459 }
1460
1461 #include "dolphinview.moc"