src/dolphinview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 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 <QApplication>
  24 #include <QClipboard>
  25 #include <QKeyEvent>
  26 #include <QItemSelection>
  27 #include <QBoxLayout>
  28 #include <QTimer>
  29 #include <QScrollBar>
  30
  31 #include <kcolorscheme.h>
  32 #include <kdirlister.h>
  33 #include <kfileitemdelegate.h>
  34 #include <klocale.h>
  35 #include <kiconeffect.h>
  36 #include <kio/netaccess.h>
  37 #include <kio/renamedialog.h>
  38 #include <kio/previewjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41 #include <konq_operations.h>
  42 #include <kurl.h>
  43
  44 #include "dolphinmodel.h"
  45 #include "dolphincolumnview.h"
  46 #include "dolphincontroller.h"
  47 #include "dolphinsortfilterproxymodel.h"
  48 #include "dolphindetailsview.h"
  49 #include "dolphiniconsview.h"
  50 #include "renamedialog.h"
  51 #include "viewproperties.h"
  52 #include "dolphinsettings.h"
  53 #include "dolphin_generalsettings.h"
  54
  55 DolphinView::DolphinView(QWidget* parent,
  56                          const KUrl& url,
  57                          KDirLister* dirLister,
  58                          DolphinModel* dolphinModel,
  59                          DolphinSortFilterProxyModel* proxyModel) :
  60     QWidget(parent),
  61     m_active(true),
  62     m_loadingDirectory(false),
  63     m_storedCategorizedSorting(false),
  64     m_mode(DolphinView::IconsView),
  65     m_topLayout(0),
  66     m_controller(0),
  67     m_iconsView(0),
  68     m_detailsView(0),
  69     m_columnView(0),
  70     m_fileItemDelegate(0),
  71     m_dolphinModel(dolphinModel),
  72     m_dirLister(dirLister),
  73     m_proxyModel(proxyModel)
  74 {
  75     setFocusPolicy(Qt::StrongFocus);
  76     m_topLayout = new QVBoxLayout(this);
  77     m_topLayout->setSpacing(0);
  78     m_topLayout->setMargin(0);
  79
  80     QClipboard* clipboard = QApplication::clipboard();
  81     connect(clipboard, SIGNAL(dataChanged()),
  82             this, SLOT(updateCutItems()));
  83
  84     connect(m_dirLister, SIGNAL(completed()),
  85             this, SLOT(updateCutItems()));
  86     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
  87             this, SLOT(generatePreviews(const KFileItemList&)));
  88
  89     m_controller = new DolphinController(this);
  90     m_controller->setUrl(url);
  91     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  92             this, SIGNAL(urlChanged(const KUrl&)));
  93     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  94             this, SLOT(openContextMenu(const QPoint&)));
  95     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
  96             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
  97     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
  98             this, SLOT(updateSorting(DolphinView::Sorting)));
  99     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 100             this, SLOT(updateSortOrder(Qt::SortOrder)));
 101     connect(m_controller, SIGNAL(itemTriggered(const KFileItem&)),
 102             this, SLOT(triggerItem(const KFileItem&)));
 103     connect(m_controller, SIGNAL(activated()),
 104             this, SLOT(activate()));
 105     connect(m_controller, SIGNAL(itemEntered(const KFileItem&)),
 106             this, SLOT(showHoverInformation(const KFileItem&)));
 107     connect(m_controller, SIGNAL(viewportEntered()),
 108             this, SLOT(clearHoverInformation()));
 109
 110     applyViewProperties(url);
 111     m_topLayout->addWidget(itemView());
 112 }
 113
 114 DolphinView::~DolphinView()
 115 {
 116 }
 117
 118 const KUrl& DolphinView::url() const
 119 {
 120     return m_controller->url();
 121 }
 122
 123 KUrl DolphinView::rootUrl() const
 124 {
 125     return isColumnViewActive() ? m_columnView->rootUrl() : url();
 126 }
 127
 128 void DolphinView::setActive(bool active)
 129 {
 130     if (active == m_active) {
 131         return;
 132     }
 133
 134     m_active = active;
 135
 136     updateViewportColor();
 137     update();
 138
 139     if (active) {
 140         emit activated();
 141     }
 142 }
 143
 144 bool DolphinView::isActive() const
 145 {
 146     return m_active;
 147 }
 148
 149 void DolphinView::setMode(Mode mode)
 150 {
 151     if (mode == m_mode) {
 152         return; // the wished mode is already set
 153     }
 154
 155     m_mode = mode;
 156
 157     if (isColumnViewActive()) {
 158         // When changing the mode in the column view, it makes sense
 159         // to go back to the root URL of the column view automatically.
 160         // Otherwise there it would not be possible to turn off the column view
 161         // without focusing the first column.
 162         setUrl(m_dirLister->url());
 163         m_controller->setUrl(m_dirLister->url());
 164     }
 165
 166     const KUrl viewPropsUrl = viewPropertiesUrl();
 167     ViewProperties props(viewPropsUrl);
 168     props.setViewMode(m_mode);
 169
 170     createView();
 171
 172     // Not all view modes support categorized sorting. Adjust the sorting model
 173     // if changing the view mode results in a change of the categorized sorting
 174     // capabilities.
 175     m_storedCategorizedSorting = props.categorizedSorting();
 176     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 177     if (categorized != m_proxyModel->isCategorizedModel()) {
 178         m_proxyModel->setCategorizedModel(categorized);
 179         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 180         emit categorizedSortingChanged();
 181     }
 182
 183     loadDirectory(viewPropsUrl);
 184
 185     emit modeChanged();
 186 }
 187
 188 DolphinView::Mode DolphinView::mode() const
 189 {
 190     return m_mode;
 191 }
 192
 193 void DolphinView::setShowPreview(bool show)
 194 {
 195     const KUrl viewPropsUrl = viewPropertiesUrl();
 196     ViewProperties props(viewPropsUrl);
 197     props.setShowPreview(show);
 198
 199     m_controller->setShowPreview(show);
 200     emit showPreviewChanged();
 201
 202     loadDirectory(viewPropsUrl, true);
 203 }
 204
 205 bool DolphinView::showPreview() const
 206 {
 207     return m_controller->showPreview();
 208 }
 209
 210 void DolphinView::setShowHiddenFiles(bool show)
 211 {
 212     if (m_dirLister->showingDotFiles() == show) {
 213         return;
 214     }
 215
 216     const KUrl viewPropsUrl = viewPropertiesUrl();
 217     ViewProperties props(viewPropsUrl);
 218     props.setShowHiddenFiles(show);
 219
 220     m_dirLister->setShowingDotFiles(show);
 221     m_controller->setShowHiddenFiles(show);
 222     emit showHiddenFilesChanged();
 223
 224     loadDirectory(viewPropsUrl, true);
 225 }
 226
 227 bool DolphinView::showHiddenFiles() const
 228 {
 229     return m_dirLister->showingDotFiles();
 230 }
 231
 232 void DolphinView::setCategorizedSorting(bool categorized)
 233 {
 234     if (categorized == categorizedSorting()) {
 235         return;
 236     }
 237
 238     // setCategorizedSorting(true) may only get invoked
 239     // if the view supports categorized sorting
 240     Q_ASSERT(!categorized || supportsCategorizedSorting());
 241
 242     ViewProperties props(viewPropertiesUrl());
 243     props.setCategorizedSorting(categorized);
 244     props.save();
 245
 246     m_storedCategorizedSorting = categorized;
 247     m_proxyModel->setCategorizedModel(categorized);
 248     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 249
 250     emit categorizedSortingChanged();
 251 }
 252
 253 bool DolphinView::categorizedSorting() const
 254 {
 255     // If all view modes would support categorized sorting, returning
 256     // m_proxyModel->isCategorizedModel() would be the way to go. As
 257     // currently only the icons view supports caterized sorting, we remember
 258     // the stored view properties state in m_storedCategorizedSorting and
 259     // return this state. The application takes care to disable the corresponding
 260     // checkbox by checking DolphinView::supportsCategorizedSorting() to indicate
 261     // that this setting is not applied to the current view mode.
 262     return m_storedCategorizedSorting;
 263 }
 264
 265 bool DolphinView::supportsCategorizedSorting() const
 266 {
 267     return m_iconsView != 0;
 268 }
 269
 270 void DolphinView::selectAll()
 271 {
 272     itemView()->selectAll();
 273 }
 274
 275 void DolphinView::invertSelection()
 276 {
 277     if (isColumnViewActive()) {
 278         // QAbstractItemView does not offer a virtual method invertSelection()
 279         // as counterpart to QAbstractItemView::selectAll(). This makes it
 280         // necessary to delegate the inverting of the selection to the
 281         // column view, as only the selection of the active column should
 282         // get inverted.
 283         m_columnView->invertSelection();
 284     } else {
 285         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 286         const QAbstractItemModel* itemModel = selectionModel->model();
 287
 288         const QModelIndex topLeft = itemModel->index(0, 0);
 289         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 290                                                          itemModel->columnCount() - 1);
 291
 292         const QItemSelection selection(topLeft, bottomRight);
 293         selectionModel->select(selection, QItemSelectionModel::Toggle);
 294     }
 295 }
 296
 297 bool DolphinView::hasSelection() const
 298 {
 299     return itemView()->selectionModel()->hasSelection();
 300 }
 301
 302 void DolphinView::clearSelection()
 303 {
 304     itemView()->selectionModel()->clear();
 305 }
 306
 307 KFileItemList DolphinView::selectedItems() const
 308 {
 309     const QAbstractItemView* view = itemView();
 310
 311     // Our view has a selection, we will map them back to the DolphinModel
 312     // and then fill the KFileItemList.
 313     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 314
 315     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 316     KFileItemList itemList;
 317
 318     const QModelIndexList indexList = selection.indexes();
 319     foreach (QModelIndex index, indexList) {
 320         KFileItem item = m_dolphinModel->itemForIndex(index);
 321         if (!item.isNull()) {
 322             itemList.append(item);
 323         }
 324     }
 325
 326     return itemList;
 327 }
 328
 329 KUrl::List DolphinView::selectedUrls() const
 330 {
 331     KUrl::List urls;
 332     const KFileItemList list = selectedItems();
 333     foreach (KFileItem item, list) {
 334         urls.append(item.url());
 335     }
 336     return urls;
 337 }
 338
 339 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 340 {
 341     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 342     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 343 }
 344
 345 void DolphinView::setContentsPosition(int x, int y)
 346 {
 347     QAbstractItemView* view = itemView();
 348
 349     // the ColumnView takes care itself for the horizontal scrolling
 350     if (!isColumnViewActive()) {
 351         view->horizontalScrollBar()->setValue(x);
 352     }
 353     view->verticalScrollBar()->setValue(y);
 354
 355     m_loadingDirectory = false;
 356 }
 357
 358 QPoint DolphinView::contentsPosition() const
 359 {
 360     const int x = itemView()->horizontalScrollBar()->value();
 361     const int y = itemView()->verticalScrollBar()->value();
 362     return QPoint(x, y);
 363 }
 364
 365 void DolphinView::zoomIn()
 366 {
 367     m_controller->triggerZoomIn();
 368 }
 369
 370 void DolphinView::zoomOut()
 371 {
 372     m_controller->triggerZoomOut();
 373 }
 374
 375 bool DolphinView::isZoomInPossible() const
 376 {
 377     return m_controller->isZoomInPossible();
 378 }
 379
 380 bool DolphinView::isZoomOutPossible() const
 381 {
 382     return m_controller->isZoomOutPossible();
 383 }
 384
 385 void DolphinView::setSorting(Sorting sorting)
 386 {
 387     if (sorting != this->sorting()) {
 388         updateSorting(sorting);
 389     }
 390 }
 391
 392 DolphinView::Sorting DolphinView::sorting() const
 393 {
 394     return m_proxyModel->sorting();
 395 }
 396
 397 void DolphinView::setSortOrder(Qt::SortOrder order)
 398 {
 399     if (sortOrder() != order) {
 400         updateSortOrder(order);
 401     }
 402 }
 403
 404 Qt::SortOrder DolphinView::sortOrder() const
 405 {
 406     return m_proxyModel->sortOrder();
 407 }
 408
 409 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 410 {
 411     const KUrl viewPropsUrl = viewPropertiesUrl();
 412     ViewProperties props(viewPropsUrl);
 413     props.setAdditionalInfo(info);
 414
 415     m_controller->setAdditionalInfoCount(info.count());
 416     m_fileItemDelegate->setShowInformation(info);
 417
 418     emit additionalInfoChanged(info);
 419     loadDirectory(viewPropsUrl, true);
 420 }
 421
 422 KFileItemDelegate::InformationList DolphinView::additionalInfo() const
 423 {
 424     return m_fileItemDelegate->showInformation();
 425 }
 426
 427 void DolphinView::reload()
 428 {
 429     setUrl(url());
 430     loadDirectory(url(), true);
 431 }
 432
 433 void DolphinView::refresh()
 434 {
 435     createView();
 436     applyViewProperties(m_controller->url());
 437     reload();
 438     updateViewportColor();
 439 }
 440
 441 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 442 {
 443     if (m_controller->url() == url) {
 444         return;
 445     }
 446
 447     const bool restoreColumnView =  !rootUrl.isEmpty()
 448                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 449                                     && rootUrl.isParentOf(url);
 450
 451     m_controller->setUrl(url); // emits urlChanged, which we forward
 452
 453     if (restoreColumnView) {
 454         applyViewProperties(rootUrl);
 455         loadDirectory(rootUrl);
 456         // Restoring the column view relies on the URL-history. It might be possible
 457         // that the view properties have been changed or deleted in the meantime, so
 458         // it cannot be asserted that really a column view has been created:
 459         if (itemView() == m_columnView) {
 460             m_columnView->setRootUrl(rootUrl);
 461             m_columnView->showColumn(url);
 462         }
 463     } else {
 464         applyViewProperties(url);
 465         loadDirectory(url);
 466     }
 467
 468     itemView()->setFocus();
 469
 470     emit startedPathLoading(url);
 471 }
 472
 473 void DolphinView::setUrl(const KUrl& url)
 474 {
 475     updateView(url, KUrl());
 476 }
 477
 478 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 479 {
 480     QWidget::mouseReleaseEvent(event);
 481     setActive(true);
 482 }
 483 void DolphinView::activate()
 484 {
 485     setActive(true);
 486 }
 487
 488 void DolphinView::triggerItem(const KFileItem& item)
 489 {
 490     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 491     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 492         // items are selected by the user, hence don't trigger the
 493         // item specified by 'index'
 494         return;
 495     }
 496
 497     if (item.isNull()) {
 498         return;
 499     }
 500
 501     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 502 }
 503
 504 void DolphinView::generatePreviews(const KFileItemList& items)
 505 {
 506     if (m_controller->showPreview()) {
 507         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 508         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 509                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 510     }
 511 }
 512
 513 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 514 {
 515     Q_ASSERT(!item.isNull());
 516     if (item.url().directory() != m_dirLister->url().path()) {
 517         // the preview job is still working on items of an older URL, hence
 518         // the item is not part of the directory model anymore
 519         return;
 520     }
 521
 522     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 523     if (idx.isValid() && (idx.column() == 0)) {
 524         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 525         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 526             KIconEffect iconEffect;
 527             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 528             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 529         } else {
 530             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 531         }
 532     }
 533 }
 534
 535 void DolphinView::emitSelectionChangedSignal()
 536 {
 537     emit selectionChanged(DolphinView::selectedItems());
 538 }
 539
 540 void DolphinView::loadDirectory(const KUrl& url, bool reload)
 541 {
 542     if (!url.isValid()) {
 543         const QString location(url.pathOrUrl());
 544         if (location.isEmpty()) {
 545             emit errorMessage(i18nc("@info:status", "The location is empty."));
 546         } else {
 547             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 548         }
 549         return;
 550     }
 551
 552     m_cutItemsCache.clear();
 553     m_loadingDirectory = true;
 554
 555     m_dirLister->stop();
 556     m_dirLister->openUrl(url, reload ? KDirLister::Reload : KDirLister::NoFlags);
 557
 558     if (isColumnViewActive()) {
 559         // adjusting the directory lister is not enough in the case of the
 560         // column view, as each column has its own directory lister internally...
 561         if (reload) {
 562             m_columnView->reload();
 563         } else {
 564             m_columnView->showColumn(url);
 565         }
 566     }
 567 }
 568
 569 KUrl DolphinView::viewPropertiesUrl() const
 570 {
 571     if (isColumnViewActive()) {
 572         return m_dirLister->url();
 573     }
 574
 575     return url();
 576 }
 577
 578 void DolphinView::applyViewProperties(const KUrl& url)
 579 {
 580     if (isColumnViewActive() && rootUrl().isParentOf(url)) {
 581         // The column view is active, hence don't apply the view properties
 582         // of sub directories (represented by columns) to the view. The
 583         // view always represents the properties of the first column.
 584         return;
 585     }
 586
 587     const ViewProperties props(url);
 588
 589     const Mode mode = props.viewMode();
 590     if (m_mode != mode) {
 591         m_mode = mode;
 592         createView();
 593         emit modeChanged();
 594     }
 595     if (itemView() == 0) {
 596         createView();
 597     }
 598     Q_ASSERT(itemView() != 0);
 599     Q_ASSERT(m_fileItemDelegate != 0);
 600
 601     const bool showHiddenFiles = props.showHiddenFiles();
 602     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 603         m_dirLister->setShowingDotFiles(showHiddenFiles);
 604         m_controller->setShowHiddenFiles(showHiddenFiles);
 605         emit showHiddenFilesChanged();
 606     }
 607
 608     m_storedCategorizedSorting = props.categorizedSorting();
 609     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 610     if (categorized != m_proxyModel->isCategorizedModel()) {
 611         m_proxyModel->setCategorizedModel(categorized);
 612         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 613         emit categorizedSortingChanged();
 614     }
 615
 616     const DolphinView::Sorting sorting = props.sorting();
 617     if (sorting != m_proxyModel->sorting()) {
 618         m_proxyModel->setSorting(sorting);
 619         emit sortingChanged(sorting);
 620     }
 621
 622     const Qt::SortOrder sortOrder = props.sortOrder();
 623     if (sortOrder != m_proxyModel->sortOrder()) {
 624         m_proxyModel->setSortOrder(sortOrder);
 625         emit sortOrderChanged(sortOrder);
 626     }
 627
 628     KFileItemDelegate::InformationList info = props.additionalInfo();
 629     if (info != m_fileItemDelegate->showInformation()) {
 630         m_controller->setAdditionalInfoCount(info.count());
 631         m_fileItemDelegate->setShowInformation(info);
 632         emit additionalInfoChanged(info);
 633     }
 634
 635     const bool showPreview = props.showPreview();
 636     if (showPreview != m_controller->showPreview()) {
 637         m_controller->setShowPreview(showPreview);
 638         emit showPreviewChanged();
 639     }
 640 }
 641
 642 void DolphinView::changeSelection(const KFileItemList& selection)
 643 {
 644     clearSelection();
 645     if (selection.isEmpty()) {
 646         return;
 647     }
 648     const KUrl& baseUrl = url();
 649     KUrl url;
 650     QItemSelection new_selection;
 651     foreach(const KFileItem& item, selection) {
 652         url = item.url().upUrl();
 653         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 654             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 655             new_selection.select(index, index);
 656         }
 657     }
 658     itemView()->selectionModel()->select(new_selection,
 659                                          QItemSelectionModel::ClearAndSelect
 660                                          | QItemSelectionModel::Current);
 661 }
 662
 663 void DolphinView::openContextMenu(const QPoint& pos)
 664 {
 665     KFileItem item;
 666
 667     const QModelIndex index = itemView()->indexAt(pos);
 668     if (isValidNameIndex(index)) {
 669         item = fileItem(index);
 670     }
 671
 672     emit requestContextMenu(item, url());
 673 }
 674
 675 void DolphinView::dropUrls(const KUrl::List& urls,
 676                            const KUrl& destPath,
 677                            const QModelIndex& destIndex,
 678                            QWidget* source)
 679 {
 680     KFileItem directory;
 681     if (isValidNameIndex(destIndex)) {
 682         KFileItem item = fileItem(destIndex);
 683         Q_ASSERT(!item.isNull());
 684         if (item.isDir()) {
 685             // the URLs are dropped above a directory
 686             directory = item;
 687         }
 688     }
 689
 690     if ((directory.isNull()) && (source == itemView())) {
 691         // The dropping is done into the same viewport where
 692         // the dragging has been started. Just ignore this...
 693         return;
 694     }
 695
 696     const KUrl& destination = (directory.isNull()) ?
 697                               destPath : directory.url();
 698     dropUrls(urls, destination);
 699 }
 700
 701 void DolphinView::dropUrls(const KUrl::List& urls,
 702                            const KUrl& destination)
 703 {
 704     emit urlsDropped(urls, destination);
 705 }
 706
 707 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 708 {
 709     ViewProperties props(viewPropertiesUrl());
 710     props.setSorting(sorting);
 711
 712     m_proxyModel->setSorting(sorting);
 713
 714     emit sortingChanged(sorting);
 715 }
 716
 717 void DolphinView::updateSortOrder(Qt::SortOrder order)
 718 {
 719     ViewProperties props(viewPropertiesUrl());
 720     props.setSortOrder(order);
 721
 722     m_proxyModel->setSortOrder(order);
 723
 724     emit sortOrderChanged(order);
 725 }
 726
 727 void DolphinView::emitContentsMoved()
 728 {
 729     // only emit the contents moved signal if:
 730     // - no directory loading is ongoing (this would reset the contents position
 731     //   always to (0, 0))
 732     // - if the Column View is active: the column view does an automatic
 733     //   positioning during the loading operation, which must be remembered
 734     if (!m_loadingDirectory || isColumnViewActive()) {
 735         const QPoint pos(contentsPosition());
 736         emit contentsMoved(pos.x(), pos.y());
 737     }
 738 }
 739
 740 void DolphinView::updateCutItems()
 741 {
 742     // restore the icons of all previously selected items to the
 743     // original state...
 744     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 745     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 746     while (it != end) {
 747         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 748         if (index.isValid()) {
 749             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 750         }
 751         ++it;
 752     }
 753     m_cutItemsCache.clear();
 754
 755     // ... and apply an item effect to all currently cut items
 756     applyCutItemEffect();
 757 }
 758
 759 void DolphinView::showHoverInformation(const KFileItem& item)
 760 {
 761     if (hasSelection()) {
 762         return;
 763     }
 764
 765     emit requestItemInfo(item);
 766 }
 767
 768 void DolphinView::clearHoverInformation()
 769 {
 770     emit requestItemInfo(KFileItem());
 771 }
 772
 773
 774 void DolphinView::createView()
 775 {
 776     KFileItemDelegate::InformationList infoList;
 777     if (m_fileItemDelegate != 0) {
 778         infoList = m_fileItemDelegate->showInformation();
 779     }
 780
 781     // delete current view
 782     QAbstractItemView* view = itemView();
 783     if (view != 0) {
 784         m_topLayout->removeWidget(view);
 785         view->close();
 786         view->deleteLater();
 787         view = 0;
 788         m_iconsView = 0;
 789         m_detailsView = 0;
 790         m_columnView = 0;
 791         m_fileItemDelegate = 0;
 792     }
 793
 794     Q_ASSERT(m_iconsView == 0);
 795     Q_ASSERT(m_detailsView == 0);
 796     Q_ASSERT(m_columnView == 0);
 797
 798     // ... and recreate it representing the current mode
 799     switch (m_mode) {
 800     case IconsView: {
 801         m_iconsView = new DolphinIconsView(this, m_controller);
 802         view = m_iconsView;
 803         break;
 804     }
 805
 806     case DetailsView:
 807         m_detailsView = new DolphinDetailsView(this, m_controller);
 808         view = m_detailsView;
 809         break;
 810
 811     case ColumnView:
 812         m_columnView = new DolphinColumnView(this, m_controller);
 813         view = m_columnView;
 814         break;
 815     }
 816
 817     Q_ASSERT(view != 0);
 818
 819     m_fileItemDelegate = new KFileItemDelegate(view);
 820     m_fileItemDelegate->setShowInformation(infoList);
 821     view->setItemDelegate(m_fileItemDelegate);
 822
 823     view->setModel(m_proxyModel);
 824     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 825
 826     new KMimeTypeResolver(view, m_dolphinModel);
 827     m_topLayout->insertWidget(1, view);
 828
 829     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 830             this, SLOT(emitSelectionChangedSignal()));
 831     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 832             this, SLOT(emitContentsMoved()));
 833     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 834             this, SLOT(emitContentsMoved()));
 835     view->setFocus();
 836 }
 837
 838 QAbstractItemView* DolphinView::itemView() const
 839 {
 840     if (m_detailsView != 0) {
 841         return m_detailsView;
 842     } else if (m_columnView != 0) {
 843         return m_columnView;
 844     }
 845
 846     return m_iconsView;
 847 }
 848
 849 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 850 {
 851     return index.isValid() && (index.column() == DolphinModel::Name);
 852 }
 853
 854 bool DolphinView::isCutItem(const KFileItem& item) const
 855 {
 856     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 857     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 858
 859     const KUrl& itemUrl = item.url();
 860     KUrl::List::const_iterator it = cutUrls.begin();
 861     const KUrl::List::const_iterator end = cutUrls.end();
 862     while (it != end) {
 863         if (*it == itemUrl) {
 864             return true;
 865         }
 866         ++it;
 867     }
 868
 869     return false;
 870 }
 871
 872 void DolphinView::applyCutItemEffect()
 873 {
 874     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 875     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 876         return;
 877     }
 878
 879     KFileItemList items(m_dirLister->items());
 880     KFileItemList::const_iterator it = items.begin();
 881     const KFileItemList::const_iterator end = items.end();
 882     while (it != end) {
 883         const KFileItem item = *it;
 884         if (isCutItem(item)) {
 885             const QModelIndex index = m_dolphinModel->indexForItem(item);
 886             // Huh? the item is already known
 887             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 888             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 889             if (value.type() == QVariant::Icon) {
 890                 const QIcon icon(qvariant_cast<QIcon>(value));
 891                 QPixmap pixmap = icon.pixmap(128, 128);
 892
 893                 // remember current pixmap for the item to be able
 894                 // to restore it when other items get cut
 895                 CutItem cutItem;
 896                 cutItem.url = item.url();
 897                 cutItem.pixmap = pixmap;
 898                 m_cutItemsCache.append(cutItem);
 899
 900                 // apply icon effect to the cut item
 901                 KIconEffect iconEffect;
 902                 pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 903                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 904             }
 905         }
 906         ++it;
 907     }
 908 }
 909
 910 void DolphinView::updateViewportColor()
 911 {
 912     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 913     if (m_active) {
 914         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 915         emit selectionChanged(selectedItems());
 916     } else {
 917         color.setAlpha(0);
 918     }
 919
 920     QWidget* viewport = itemView()->viewport();
 921     QPalette palette;
 922     palette.setColor(viewport->backgroundRole(), color);
 923     viewport->setPalette(palette);
 924 }
 925
 926 #include "dolphinview.moc"