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
  92     // Receiver of the DolphinView signal 'urlChanged()' don't need
  93     // to care whether the internal controller changed the URL already or whether
  94     // the controller just requested an URL change and will be updated later.
  95     // In both cases the URL has been changed:
  96     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  97             this, SIGNAL(urlChanged(const KUrl&)));
  98     connect(m_controller, SIGNAL(requestUrlChange(const KUrl&)),
  99             this, SIGNAL(urlChanged(const KUrl&)));
 100
 101     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 102             this, SLOT(openContextMenu(const QPoint&)));
 103     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
 104             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
 105     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 106             this, SLOT(updateSorting(DolphinView::Sorting)));
 107     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 108             this, SLOT(updateSortOrder(Qt::SortOrder)));
 109     connect(m_controller, SIGNAL(itemTriggered(const KFileItem&)),
 110             this, SLOT(triggerItem(const KFileItem&)));
 111     connect(m_controller, SIGNAL(activated()),
 112             this, SLOT(activate()));
 113     connect(m_controller, SIGNAL(itemEntered(const KFileItem&)),
 114             this, SLOT(showHoverInformation(const KFileItem&)));
 115     connect(m_controller, SIGNAL(viewportEntered()),
 116             this, SLOT(clearHoverInformation()));
 117
 118     applyViewProperties(url);
 119     m_topLayout->addWidget(itemView());
 120 }
 121
 122 DolphinView::~DolphinView()
 123 {
 124 }
 125
 126 const KUrl& DolphinView::url() const
 127 {
 128     return m_controller->url();
 129 }
 130
 131 KUrl DolphinView::rootUrl() const
 132 {
 133     return isColumnViewActive() ? m_columnView->rootUrl() : url();
 134 }
 135
 136 void DolphinView::setActive(bool active)
 137 {
 138     if (active == m_active) {
 139         return;
 140     }
 141
 142     m_active = active;
 143
 144     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 145     if (active) {
 146         // TODO: emitting urlChanged() is a hack, as the URL hasn't really changed. It
 147         // bypasses the problem when having a split view and changing the active view to
 148         // update the some URL dependent states. A nicer approach should be no big deal...
 149         emit urlChanged(url());
 150         emit selectionChanged(selectedItems());
 151     } else {
 152         color.setAlpha(150);
 153     }
 154
 155     QWidget* viewport = itemView()->viewport();
 156     QPalette palette;
 157     palette.setColor(viewport->backgroundRole(), color);
 158     viewport->setPalette(palette);
 159
 160     update();
 161
 162     if (active) {
 163         emit activated();
 164     }
 165
 166     m_controller->indicateActivationChange(active);
 167 }
 168
 169 bool DolphinView::isActive() const
 170 {
 171     return m_active;
 172 }
 173
 174 void DolphinView::setMode(Mode mode)
 175 {
 176     if (mode == m_mode) {
 177         return; // the wished mode is already set
 178     }
 179
 180     m_mode = mode;
 181
 182     if (isColumnViewActive()) {
 183         // When changing the mode in the column view, it makes sense
 184         // to go back to the root URL of the column view automatically.
 185         // Otherwise there it would not be possible to turn off the column view
 186         // without focusing the first column.
 187         const KUrl root = rootUrl();
 188         setUrl(root);
 189         m_controller->setUrl(root);
 190     }
 191
 192     const KUrl viewPropsUrl = viewPropertiesUrl();
 193     ViewProperties props(viewPropsUrl);
 194     props.setViewMode(m_mode);
 195
 196     createView();
 197
 198     // Not all view modes support categorized sorting. Adjust the sorting model
 199     // if changing the view mode results in a change of the categorized sorting
 200     // capabilities.
 201     m_storedCategorizedSorting = props.categorizedSorting();
 202     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 203     if (categorized != m_proxyModel->isCategorizedModel()) {
 204         m_proxyModel->setCategorizedModel(categorized);
 205         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 206         emit categorizedSortingChanged();
 207     }
 208
 209     loadDirectory(viewPropsUrl);
 210
 211     emit modeChanged();
 212 }
 213
 214 DolphinView::Mode DolphinView::mode() const
 215 {
 216     return m_mode;
 217 }
 218
 219 void DolphinView::setShowPreview(bool show)
 220 {
 221     const KUrl viewPropsUrl = viewPropertiesUrl();
 222     ViewProperties props(viewPropsUrl);
 223     props.setShowPreview(show);
 224
 225     m_controller->setShowPreview(show);
 226     emit showPreviewChanged();
 227
 228     loadDirectory(viewPropsUrl, true);
 229 }
 230
 231 bool DolphinView::showPreview() const
 232 {
 233     return m_controller->showPreview();
 234 }
 235
 236 void DolphinView::setShowHiddenFiles(bool show)
 237 {
 238     if (m_dirLister->showingDotFiles() == show) {
 239         return;
 240     }
 241
 242     const KUrl viewPropsUrl = viewPropertiesUrl();
 243     ViewProperties props(viewPropsUrl);
 244     props.setShowHiddenFiles(show);
 245
 246     m_dirLister->setShowingDotFiles(show);
 247     m_controller->setShowHiddenFiles(show);
 248     emit showHiddenFilesChanged();
 249
 250     loadDirectory(viewPropsUrl, true);
 251 }
 252
 253 bool DolphinView::showHiddenFiles() const
 254 {
 255     return m_dirLister->showingDotFiles();
 256 }
 257
 258 void DolphinView::setCategorizedSorting(bool categorized)
 259 {
 260     if (categorized == categorizedSorting()) {
 261         return;
 262     }
 263
 264     // setCategorizedSorting(true) may only get invoked
 265     // if the view supports categorized sorting
 266     Q_ASSERT(!categorized || supportsCategorizedSorting());
 267
 268     ViewProperties props(viewPropertiesUrl());
 269     props.setCategorizedSorting(categorized);
 270     props.save();
 271
 272     m_storedCategorizedSorting = categorized;
 273     m_proxyModel->setCategorizedModel(categorized);
 274     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 275
 276     emit categorizedSortingChanged();
 277 }
 278
 279 bool DolphinView::categorizedSorting() const
 280 {
 281     // If all view modes would support categorized sorting, returning
 282     // m_proxyModel->isCategorizedModel() would be the way to go. As
 283     // currently only the icons view supports caterized sorting, we remember
 284     // the stored view properties state in m_storedCategorizedSorting and
 285     // return this state. The application takes care to disable the corresponding
 286     // checkbox by checking DolphinView::supportsCategorizedSorting() to indicate
 287     // that this setting is not applied to the current view mode.
 288     return m_storedCategorizedSorting;
 289 }
 290
 291 bool DolphinView::supportsCategorizedSorting() const
 292 {
 293     return m_iconsView != 0;
 294 }
 295
 296 void DolphinView::selectAll()
 297 {
 298     itemView()->selectAll();
 299 }
 300
 301 void DolphinView::invertSelection()
 302 {
 303     if (isColumnViewActive()) {
 304         // QAbstractItemView does not offer a virtual method invertSelection()
 305         // as counterpart to QAbstractItemView::selectAll(). This makes it
 306         // necessary to delegate the inverting of the selection to the
 307         // column view, as only the selection of the active column should
 308         // get inverted.
 309         m_columnView->invertSelection();
 310     } else {
 311         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 312         const QAbstractItemModel* itemModel = selectionModel->model();
 313
 314         const QModelIndex topLeft = itemModel->index(0, 0);
 315         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 316                                                          itemModel->columnCount() - 1);
 317
 318         const QItemSelection selection(topLeft, bottomRight);
 319         selectionModel->select(selection, QItemSelectionModel::Toggle);
 320     }
 321 }
 322
 323 bool DolphinView::hasSelection() const
 324 {
 325     return itemView()->selectionModel()->hasSelection();
 326 }
 327
 328 void DolphinView::clearSelection()
 329 {
 330     itemView()->selectionModel()->clear();
 331 }
 332
 333 KFileItemList DolphinView::selectedItems() const
 334 {
 335     const QAbstractItemView* view = itemView();
 336
 337     // Our view has a selection, we will map them back to the DolphinModel
 338     // and then fill the KFileItemList.
 339     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 340
 341     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 342     KFileItemList itemList;
 343
 344     const QModelIndexList indexList = selection.indexes();
 345     foreach (QModelIndex index, indexList) {
 346         KFileItem item = m_dolphinModel->itemForIndex(index);
 347         if (!item.isNull()) {
 348             itemList.append(item);
 349         }
 350     }
 351
 352     return itemList;
 353 }
 354
 355 KUrl::List DolphinView::selectedUrls() const
 356 {
 357     KUrl::List urls;
 358     const KFileItemList list = selectedItems();
 359     foreach (KFileItem item, list) {
 360         urls.append(item.url());
 361     }
 362     return urls;
 363 }
 364
 365 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 366 {
 367     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 368     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 369 }
 370
 371 void DolphinView::setContentsPosition(int x, int y)
 372 {
 373     QAbstractItemView* view = itemView();
 374
 375     // the ColumnView takes care itself for the horizontal scrolling
 376     if (!isColumnViewActive()) {
 377         view->horizontalScrollBar()->setValue(x);
 378     }
 379     view->verticalScrollBar()->setValue(y);
 380
 381     m_loadingDirectory = false;
 382 }
 383
 384 QPoint DolphinView::contentsPosition() const
 385 {
 386     const int x = itemView()->horizontalScrollBar()->value();
 387     const int y = itemView()->verticalScrollBar()->value();
 388     return QPoint(x, y);
 389 }
 390
 391 void DolphinView::zoomIn()
 392 {
 393     m_controller->triggerZoomIn();
 394 }
 395
 396 void DolphinView::zoomOut()
 397 {
 398     m_controller->triggerZoomOut();
 399 }
 400
 401 bool DolphinView::isZoomInPossible() const
 402 {
 403     return m_controller->isZoomInPossible();
 404 }
 405
 406 bool DolphinView::isZoomOutPossible() const
 407 {
 408     return m_controller->isZoomOutPossible();
 409 }
 410
 411 void DolphinView::setSorting(Sorting sorting)
 412 {
 413     if (sorting != this->sorting()) {
 414         updateSorting(sorting);
 415     }
 416 }
 417
 418 DolphinView::Sorting DolphinView::sorting() const
 419 {
 420     return m_proxyModel->sorting();
 421 }
 422
 423 void DolphinView::setSortOrder(Qt::SortOrder order)
 424 {
 425     if (sortOrder() != order) {
 426         updateSortOrder(order);
 427     }
 428 }
 429
 430 Qt::SortOrder DolphinView::sortOrder() const
 431 {
 432     return m_proxyModel->sortOrder();
 433 }
 434
 435 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 436 {
 437     const KUrl viewPropsUrl = viewPropertiesUrl();
 438     ViewProperties props(viewPropsUrl);
 439     props.setAdditionalInfo(info);
 440
 441     m_controller->setAdditionalInfoCount(info.count());
 442     m_fileItemDelegate->setShowInformation(info);
 443
 444     emit additionalInfoChanged(info);
 445     loadDirectory(viewPropsUrl, true);
 446 }
 447
 448 KFileItemDelegate::InformationList DolphinView::additionalInfo() const
 449 {
 450     return m_fileItemDelegate->showInformation();
 451 }
 452
 453 void DolphinView::reload()
 454 {
 455     setUrl(url());
 456     loadDirectory(url(), true);
 457 }
 458
 459 void DolphinView::refresh()
 460 {
 461     const bool oldActivationState = m_active;
 462     m_active = true;
 463
 464     createView();
 465     applyViewProperties(m_controller->url());
 466     reload();
 467
 468     setActive(oldActivationState);
 469 }
 470
 471 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 472 {
 473     if (m_controller->url() == url) {
 474         return;
 475     }
 476
 477     m_controller->setUrl(url); // emits urlChanged, which we forward
 478
 479     if (!rootUrl.isEmpty() && rootUrl.isParentOf(url)) {
 480         applyViewProperties(rootUrl);
 481         loadDirectory(rootUrl);
 482         if (itemView() == m_columnView) {
 483             m_columnView->setRootUrl(rootUrl);
 484             m_columnView->showColumn(url);
 485         }
 486     } else {
 487         applyViewProperties(url);
 488         loadDirectory(url);
 489     }
 490
 491     itemView()->setFocus();
 492
 493     emit startedPathLoading(url);
 494 }
 495
 496 void DolphinView::setNameFilter(const QString& nameFilter)
 497 {
 498     // The name filter of KDirLister does a 'hard' filtering, which
 499     // means that only the items are shown where the names match
 500     // exactly the filter. This is non-transparent for the user, which
 501     // just wants to have a 'soft' filtering: does the name contain
 502     // the filter string?
 503     QString adjustedFilter(nameFilter);
 504     adjustedFilter.insert(0, '*');
 505     adjustedFilter.append('*');
 506
 507     m_dirLister->setNameFilter(adjustedFilter);
 508     m_dirLister->emitChanges();
 509
 510     if (isColumnViewActive()) {
 511         // adjusting the directory lister is not enough in the case of the
 512         // column view, as each column has its own directory lister internally...
 513         m_columnView->setNameFilter(nameFilter);
 514     }
 515 }
 516
 517 void DolphinView::calculateItemCount(int& fileCount, int& folderCount)
 518 {
 519     foreach (KFileItem item, m_dirLister->items()) {
 520         if (item.isDir()) {
 521             ++folderCount;
 522         } else {
 523             ++fileCount;
 524         }
 525     }
 526 }
 527
 528 void DolphinView::setUrl(const KUrl& url)
 529 {
 530     updateView(url, KUrl());
 531 }
 532
 533 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 534 {
 535     QWidget::mouseReleaseEvent(event);
 536     setActive(true);
 537 }
 538 void DolphinView::activate()
 539 {
 540     setActive(true);
 541 }
 542
 543 void DolphinView::triggerItem(const KFileItem& item)
 544 {
 545     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 546     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 547         // items are selected by the user, hence don't trigger the
 548         // item specified by 'index'
 549         return;
 550     }
 551
 552     if (item.isNull()) {
 553         return;
 554     }
 555
 556     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 557 }
 558
 559 void DolphinView::generatePreviews(const KFileItemList& items)
 560 {
 561     if (m_controller->showPreview()) {
 562         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 563         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 564                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 565     }
 566 }
 567
 568 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 569 {
 570     Q_ASSERT(!item.isNull());
 571     if (item.url().directory() != m_dirLister->url().path()) {
 572         // the preview job is still working on items of an older URL, hence
 573         // the item is not part of the directory model anymore
 574         return;
 575     }
 576
 577     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 578     if (idx.isValid() && (idx.column() == 0)) {
 579         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 580         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 581             KIconEffect iconEffect;
 582             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 583             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 584         } else {
 585             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 586         }
 587     }
 588 }
 589
 590 void DolphinView::emitSelectionChangedSignal()
 591 {
 592     emit selectionChanged(DolphinView::selectedItems());
 593 }
 594
 595 void DolphinView::loadDirectory(const KUrl& url, bool reload)
 596 {
 597     if (!url.isValid()) {
 598         const QString location(url.pathOrUrl());
 599         if (location.isEmpty()) {
 600             emit errorMessage(i18nc("@info:status", "The location is empty."));
 601         } else {
 602             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 603         }
 604         return;
 605     }
 606
 607     m_cutItemsCache.clear();
 608     m_loadingDirectory = true;
 609
 610     m_dirLister->stop();
 611     m_dirLister->openUrl(url, reload ? KDirLister::Reload : KDirLister::NoFlags);
 612
 613     if (isColumnViewActive()) {
 614         // adjusting the directory lister is not enough in the case of the
 615         // column view, as each column has its own directory lister internally...
 616         if (reload) {
 617             m_columnView->reload();
 618         } else {
 619             m_columnView->showColumn(url);
 620         }
 621     }
 622 }
 623
 624 KUrl DolphinView::viewPropertiesUrl() const
 625 {
 626     if (isColumnViewActive()) {
 627         return m_dirLister->url();
 628     }
 629
 630     return url();
 631 }
 632
 633 void DolphinView::applyViewProperties(const KUrl& url)
 634 {
 635     if (isColumnViewActive() && rootUrl().isParentOf(url)) {
 636         // The column view is active, hence don't apply the view properties
 637         // of sub directories (represented by columns) to the view. The
 638         // view always represents the properties of the first column.
 639         return;
 640     }
 641
 642     const ViewProperties props(url);
 643
 644     const Mode mode = props.viewMode();
 645     if (m_mode != mode) {
 646         m_mode = mode;
 647         createView();
 648         emit modeChanged();
 649     }
 650     if (itemView() == 0) {
 651         createView();
 652     }
 653     Q_ASSERT(itemView() != 0);
 654     Q_ASSERT(m_fileItemDelegate != 0);
 655
 656     const bool showHiddenFiles = props.showHiddenFiles();
 657     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 658         m_dirLister->setShowingDotFiles(showHiddenFiles);
 659         m_controller->setShowHiddenFiles(showHiddenFiles);
 660         emit showHiddenFilesChanged();
 661     }
 662
 663     m_storedCategorizedSorting = props.categorizedSorting();
 664     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 665     if (categorized != m_proxyModel->isCategorizedModel()) {
 666         m_proxyModel->setCategorizedModel(categorized);
 667         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 668         emit categorizedSortingChanged();
 669     }
 670
 671     const DolphinView::Sorting sorting = props.sorting();
 672     if (sorting != m_proxyModel->sorting()) {
 673         m_proxyModel->setSorting(sorting);
 674         emit sortingChanged(sorting);
 675     }
 676
 677     const Qt::SortOrder sortOrder = props.sortOrder();
 678     if (sortOrder != m_proxyModel->sortOrder()) {
 679         m_proxyModel->setSortOrder(sortOrder);
 680         emit sortOrderChanged(sortOrder);
 681     }
 682
 683     KFileItemDelegate::InformationList info = props.additionalInfo();
 684     if (info != m_fileItemDelegate->showInformation()) {
 685         m_controller->setAdditionalInfoCount(info.count());
 686         m_fileItemDelegate->setShowInformation(info);
 687         emit additionalInfoChanged(info);
 688     }
 689
 690     const bool showPreview = props.showPreview();
 691     if (showPreview != m_controller->showPreview()) {
 692         m_controller->setShowPreview(showPreview);
 693         emit showPreviewChanged();
 694     }
 695 }
 696
 697 void DolphinView::changeSelection(const KFileItemList& selection)
 698 {
 699     clearSelection();
 700     if (selection.isEmpty()) {
 701         return;
 702     }
 703     const KUrl& baseUrl = url();
 704     KUrl url;
 705     QItemSelection new_selection;
 706     foreach(const KFileItem& item, selection) {
 707         url = item.url().upUrl();
 708         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 709             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 710             new_selection.select(index, index);
 711         }
 712     }
 713     itemView()->selectionModel()->select(new_selection,
 714                                          QItemSelectionModel::ClearAndSelect
 715                                          | QItemSelectionModel::Current);
 716 }
 717
 718 void DolphinView::openContextMenu(const QPoint& pos)
 719 {
 720     KFileItem item;
 721
 722     const QModelIndex index = itemView()->indexAt(pos);
 723     if (isValidNameIndex(index)) {
 724         item = fileItem(index);
 725     }
 726
 727     emit requestContextMenu(item, url());
 728 }
 729
 730 void DolphinView::dropUrls(const KUrl::List& urls,
 731                            const KUrl& destPath,
 732                            const QModelIndex& destIndex,
 733                            QWidget* source)
 734 {
 735     KFileItem directory;
 736     if (isValidNameIndex(destIndex)) {
 737         KFileItem item = fileItem(destIndex);
 738         Q_ASSERT(!item.isNull());
 739         if (item.isDir()) {
 740             // the URLs are dropped above a directory
 741             directory = item;
 742         }
 743     }
 744
 745     if ((directory.isNull()) && (source == itemView())) {
 746         // The dropping is done into the same viewport where
 747         // the dragging has been started. Just ignore this...
 748         return;
 749     }
 750
 751     const KUrl& destination = (directory.isNull()) ?
 752                               destPath : directory.url();
 753     dropUrls(urls, destination);
 754 }
 755
 756 void DolphinView::dropUrls(const KUrl::List& urls,
 757                            const KUrl& destination)
 758 {
 759     emit urlsDropped(urls, destination);
 760 }
 761
 762 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 763 {
 764     ViewProperties props(viewPropertiesUrl());
 765     props.setSorting(sorting);
 766
 767     m_proxyModel->setSorting(sorting);
 768
 769     emit sortingChanged(sorting);
 770 }
 771
 772 void DolphinView::updateSortOrder(Qt::SortOrder order)
 773 {
 774     ViewProperties props(viewPropertiesUrl());
 775     props.setSortOrder(order);
 776
 777     m_proxyModel->setSortOrder(order);
 778
 779     emit sortOrderChanged(order);
 780 }
 781
 782 void DolphinView::emitContentsMoved()
 783 {
 784     // only emit the contents moved signal if:
 785     // - no directory loading is ongoing (this would reset the contents position
 786     //   always to (0, 0))
 787     // - if the Column View is active: the column view does an automatic
 788     //   positioning during the loading operation, which must be remembered
 789     if (!m_loadingDirectory || isColumnViewActive()) {
 790         const QPoint pos(contentsPosition());
 791         emit contentsMoved(pos.x(), pos.y());
 792     }
 793 }
 794
 795 void DolphinView::updateCutItems()
 796 {
 797     // restore the icons of all previously selected items to the
 798     // original state...
 799     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 800     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 801     while (it != end) {
 802         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 803         if (index.isValid()) {
 804             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 805         }
 806         ++it;
 807     }
 808     m_cutItemsCache.clear();
 809
 810     // ... and apply an item effect to all currently cut items
 811     applyCutItemEffect();
 812 }
 813
 814 void DolphinView::showHoverInformation(const KFileItem& item)
 815 {
 816     if (hasSelection()) {
 817         return;
 818     }
 819
 820     emit requestItemInfo(item);
 821 }
 822
 823 void DolphinView::clearHoverInformation()
 824 {
 825     emit requestItemInfo(KFileItem());
 826 }
 827
 828
 829 void DolphinView::createView()
 830 {
 831     KFileItemDelegate::InformationList infoList;
 832     if (m_fileItemDelegate != 0) {
 833         infoList = m_fileItemDelegate->showInformation();
 834     }
 835
 836     // delete current view
 837     QAbstractItemView* view = itemView();
 838     if (view != 0) {
 839         m_topLayout->removeWidget(view);
 840         view->close();
 841         view->deleteLater();
 842         view = 0;
 843         m_iconsView = 0;
 844         m_detailsView = 0;
 845         m_columnView = 0;
 846         m_fileItemDelegate = 0;
 847     }
 848
 849     Q_ASSERT(m_iconsView == 0);
 850     Q_ASSERT(m_detailsView == 0);
 851     Q_ASSERT(m_columnView == 0);
 852
 853     // ... and recreate it representing the current mode
 854     switch (m_mode) {
 855     case IconsView: {
 856         m_iconsView = new DolphinIconsView(this, m_controller);
 857         view = m_iconsView;
 858         break;
 859     }
 860
 861     case DetailsView:
 862         m_detailsView = new DolphinDetailsView(this, m_controller);
 863         view = m_detailsView;
 864         break;
 865
 866     case ColumnView:
 867         m_columnView = new DolphinColumnView(this, m_controller);
 868         view = m_columnView;
 869         break;
 870     }
 871
 872     Q_ASSERT(view != 0);
 873
 874     m_fileItemDelegate = new KFileItemDelegate(view);
 875     m_fileItemDelegate->setShowInformation(infoList);
 876     view->setItemDelegate(m_fileItemDelegate);
 877
 878     view->setModel(m_proxyModel);
 879     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 880
 881     new KMimeTypeResolver(view, m_dolphinModel);
 882     m_topLayout->insertWidget(1, view);
 883
 884     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 885             this, SLOT(emitSelectionChangedSignal()));
 886     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 887             this, SLOT(emitContentsMoved()));
 888     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 889             this, SLOT(emitContentsMoved()));
 890     view->setFocus();
 891 }
 892
 893 QAbstractItemView* DolphinView::itemView() const
 894 {
 895     if (m_detailsView != 0) {
 896         return m_detailsView;
 897     } else if (m_columnView != 0) {
 898         return m_columnView;
 899     }
 900
 901     return m_iconsView;
 902 }
 903
 904 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 905 {
 906     return index.isValid() && (index.column() == DolphinModel::Name);
 907 }
 908
 909 bool DolphinView::isCutItem(const KFileItem& item) const
 910 {
 911     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 912     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 913
 914     const KUrl& itemUrl = item.url();
 915     KUrl::List::const_iterator it = cutUrls.begin();
 916     const KUrl::List::const_iterator end = cutUrls.end();
 917     while (it != end) {
 918         if (*it == itemUrl) {
 919             return true;
 920         }
 921         ++it;
 922     }
 923
 924     return false;
 925 }
 926
 927 void DolphinView::applyCutItemEffect()
 928 {
 929     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 930     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 931         return;
 932     }
 933
 934     KFileItemList items(m_dirLister->items());
 935     KFileItemList::const_iterator it = items.begin();
 936     const KFileItemList::const_iterator end = items.end();
 937     while (it != end) {
 938         const KFileItem item = *it;
 939         if (isCutItem(item)) {
 940             const QModelIndex index = m_dolphinModel->indexForItem(item);
 941             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 942             if (value.type() == QVariant::Icon) {
 943                 const QIcon icon(qvariant_cast<QIcon>(value));
 944                 QPixmap pixmap = icon.pixmap(128, 128);
 945
 946                 // remember current pixmap for the item to be able
 947                 // to restore it when other items get cut
 948                 CutItem cutItem;
 949                 cutItem.url = item.url();
 950                 cutItem.pixmap = pixmap;
 951                 m_cutItemsCache.append(cutItem);
 952
 953                 // apply icon effect to the cut item
 954                 KIconEffect iconEffect;
 955                 pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 956                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 957             }
 958         }
 959         ++it;
 960     }
 961 }
 962
 963 #include "dolphinview.moc"