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