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 #include <ktoggleaction.h>
  23 #include <kactioncollection.h>
  24
  25 #include <QApplication>
  26 #include <QClipboard>
  27 #include <QKeyEvent>
  28 #include <QItemSelection>
  29 #include <QBoxLayout>
  30 #include <QTimer>
  31 #include <QScrollBar>
  32
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kfileitemdelegate.h>
  36 #include <klocale.h>
  37 #include <kiconeffect.h>
  38 #include <kio/netaccess.h>
  39 #include <kio/renamedialog.h>
  40 #include <kio/previewjob.h>
  41 #include <kmimetyperesolver.h>
  42 #include <konqmimedata.h>
  43 #include <konq_operations.h>
  44 #include <kurl.h>
  45
  46 #include "dolphinmodel.h"
  47 #include "dolphincolumnview.h"
  48 #include "dolphincontroller.h"
  49 #include "dolphinsortfilterproxymodel.h"
  50 #include "dolphindetailsview.h"
  51 #include "dolphiniconsview.h"
  52 #include "renamedialog.h"
  53 #include "viewproperties.h"
  54 #include "dolphinsettings.h"
  55 #include "dolphin_generalsettings.h"
  56
  57 DolphinView::DolphinView(QWidget* parent,
  58                          const KUrl& url,
  59                          KDirLister* dirLister,
  60                          DolphinModel* dolphinModel,
  61                          DolphinSortFilterProxyModel* proxyModel) :
  62     QWidget(parent),
  63     m_active(true),
  64     m_loadingDirectory(false),
  65     m_storedCategorizedSorting(false),
  66     m_mode(DolphinView::IconsView),
  67     m_topLayout(0),
  68     m_controller(0),
  69     m_iconsView(0),
  70     m_detailsView(0),
  71     m_columnView(0),
  72     m_fileItemDelegate(0),
  73     m_dolphinModel(dolphinModel),
  74     m_dirLister(dirLister),
  75     m_proxyModel(proxyModel)
  76 {
  77     setFocusPolicy(Qt::StrongFocus);
  78     m_topLayout = new QVBoxLayout(this);
  79     m_topLayout->setSpacing(0);
  80     m_topLayout->setMargin(0);
  81
  82     QClipboard* clipboard = QApplication::clipboard();
  83     connect(clipboard, SIGNAL(dataChanged()),
  84             this, SLOT(updateCutItems()));
  85
  86     connect(m_dirLister, SIGNAL(completed()),
  87             this, SLOT(updateCutItems()));
  88     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
  89             this, SLOT(generatePreviews(const KFileItemList&)));
  90
  91     m_controller = new DolphinController(this);
  92     m_controller->setUrl(url);
  93
  94     // Receiver of the DolphinView signal 'urlChanged()' don't need
  95     // to care whether the internal controller changed the URL already or whether
  96     // the controller just requested an URL change and will be updated later.
  97     // In both cases the URL has been changed:
  98     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  99             this, SIGNAL(urlChanged(const KUrl&)));
 100     connect(m_controller, SIGNAL(requestUrlChange(const KUrl&)),
 101             this, SIGNAL(urlChanged(const KUrl&)));
 102
 103     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 104             this, SLOT(openContextMenu(const QPoint&)));
 105     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
 106             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
 107     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 108             this, SLOT(updateSorting(DolphinView::Sorting)));
 109     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 110             this, SLOT(updateSortOrder(Qt::SortOrder)));
 111     connect(m_controller, SIGNAL(itemTriggered(const KFileItem&)),
 112             this, SLOT(triggerItem(const KFileItem&)));
 113     connect(m_controller, SIGNAL(activated()),
 114             this, SLOT(activate()));
 115     connect(m_controller, SIGNAL(itemEntered(const KFileItem&)),
 116             this, SLOT(showHoverInformation(const KFileItem&)));
 117     connect(m_controller, SIGNAL(viewportEntered()),
 118             this, SLOT(clearHoverInformation()));
 119
 120     applyViewProperties(url);
 121     m_topLayout->addWidget(itemView());
 122 }
 123
 124 DolphinView::~DolphinView()
 125 {
 126 }
 127
 128 const KUrl& DolphinView::url() const
 129 {
 130     return m_controller->url();
 131 }
 132
 133 KUrl DolphinView::rootUrl() const
 134 {
 135     return isColumnViewActive() ? m_columnView->rootUrl() : url();
 136 }
 137
 138 void DolphinView::setActive(bool active)
 139 {
 140     if (active == m_active) {
 141         return;
 142     }
 143
 144     m_active = active;
 145
 146     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 147     if (active) {
 148         // TODO: emitting urlChanged() is a hack, as the URL hasn't really changed. It
 149         // bypasses the problem when having a split view and changing the active view to
 150         // update the some URL dependent states. A nicer approach should be no big deal...
 151         emit urlChanged(url());
 152         emit selectionChanged(selectedItems());
 153     } else {
 154         color.setAlpha(150);
 155     }
 156
 157     QWidget* viewport = itemView()->viewport();
 158     QPalette palette;
 159     palette.setColor(viewport->backgroundRole(), color);
 160     viewport->setPalette(palette);
 161
 162     update();
 163
 164     if (active) {
 165         emit activated();
 166     }
 167
 168     m_controller->indicateActivationChange(active);
 169 }
 170
 171 bool DolphinView::isActive() const
 172 {
 173     return m_active;
 174 }
 175
 176 void DolphinView::setMode(Mode mode)
 177 {
 178     if (mode == m_mode) {
 179         return; // the wished mode is already set
 180     }
 181
 182     m_mode = mode;
 183
 184     if (isColumnViewActive()) {
 185         // When changing the mode in the column view, it makes sense
 186         // to go back to the root URL of the column view automatically.
 187         // Otherwise there it would not be possible to turn off the column view
 188         // without focusing the first column.
 189         const KUrl root = rootUrl();
 190         setUrl(root);
 191         m_controller->setUrl(root);
 192     }
 193
 194     const KUrl viewPropsUrl = viewPropertiesUrl();
 195     ViewProperties props(viewPropsUrl);
 196     props.setViewMode(m_mode);
 197
 198     createView();
 199
 200     // Not all view modes support categorized sorting. Adjust the sorting model
 201     // if changing the view mode results in a change of the categorized sorting
 202     // capabilities.
 203     m_storedCategorizedSorting = props.categorizedSorting();
 204     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 205     if (categorized != m_proxyModel->isCategorizedModel()) {
 206         m_proxyModel->setCategorizedModel(categorized);
 207         emit categorizedSortingChanged();
 208     }
 209
 210     loadDirectory(viewPropsUrl);
 211
 212     emit modeChanged();
 213 }
 214
 215 DolphinView::Mode DolphinView::mode() const
 216 {
 217     return m_mode;
 218 }
 219
 220 void DolphinView::setShowPreview(bool show)
 221 {
 222     const KUrl viewPropsUrl = viewPropertiesUrl();
 223     ViewProperties props(viewPropsUrl);
 224     props.setShowPreview(show);
 225
 226     m_controller->setShowPreview(show);
 227     emit showPreviewChanged();
 228
 229     loadDirectory(viewPropsUrl, true);
 230 }
 231
 232 bool DolphinView::showPreview() const
 233 {
 234     return m_controller->showPreview();
 235 }
 236
 237 void DolphinView::setShowHiddenFiles(bool show)
 238 {
 239     if (m_dirLister->showingDotFiles() == show) {
 240         return;
 241     }
 242
 243     const KUrl viewPropsUrl = viewPropertiesUrl();
 244     ViewProperties props(viewPropsUrl);
 245     props.setShowHiddenFiles(show);
 246
 247     m_dirLister->setShowingDotFiles(show);
 248     m_controller->setShowHiddenFiles(show);
 249     emit showHiddenFilesChanged();
 250
 251     loadDirectory(viewPropsUrl, true);
 252 }
 253
 254 bool DolphinView::showHiddenFiles() const
 255 {
 256     return m_dirLister->showingDotFiles();
 257 }
 258
 259 void DolphinView::setCategorizedSorting(bool categorized)
 260 {
 261     if (categorized == categorizedSorting()) {
 262         return;
 263     }
 264
 265     // setCategorizedSorting(true) may only get invoked
 266     // if the view supports categorized sorting
 267     Q_ASSERT(!categorized || supportsCategorizedSorting());
 268
 269     ViewProperties props(viewPropertiesUrl());
 270     props.setCategorizedSorting(categorized);
 271     props.save();
 272
 273     m_storedCategorizedSorting = categorized;
 274     m_proxyModel->setCategorizedModel(categorized);
 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         emit categorizedSortingChanged();
 668     }
 669
 670     const DolphinView::Sorting sorting = props.sorting();
 671     if (sorting != m_proxyModel->sorting()) {
 672         m_proxyModel->setSorting(sorting);
 673         emit sortingChanged(sorting);
 674     }
 675
 676     const Qt::SortOrder sortOrder = props.sortOrder();
 677     if (sortOrder != m_proxyModel->sortOrder()) {
 678         m_proxyModel->setSortOrder(sortOrder);
 679         emit sortOrderChanged(sortOrder);
 680     }
 681
 682     KFileItemDelegate::InformationList info = props.additionalInfo();
 683     if (info != m_fileItemDelegate->showInformation()) {
 684         m_controller->setAdditionalInfoCount(info.count());
 685         m_fileItemDelegate->setShowInformation(info);
 686         emit additionalInfoChanged(info);
 687     }
 688
 689     const bool showPreview = props.showPreview();
 690     if (showPreview != m_controller->showPreview()) {
 691         m_controller->setShowPreview(showPreview);
 692         emit showPreviewChanged();
 693     }
 694 }
 695
 696 void DolphinView::changeSelection(const KFileItemList& selection)
 697 {
 698     clearSelection();
 699     if (selection.isEmpty()) {
 700         return;
 701     }
 702     const KUrl& baseUrl = url();
 703     KUrl url;
 704     QItemSelection new_selection;
 705     foreach(const KFileItem& item, selection) {
 706         url = item.url().upUrl();
 707         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 708             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 709             new_selection.select(index, index);
 710         }
 711     }
 712     itemView()->selectionModel()->select(new_selection,
 713                                          QItemSelectionModel::ClearAndSelect
 714                                          | QItemSelectionModel::Current);
 715 }
 716
 717 void DolphinView::openContextMenu(const QPoint& pos)
 718 {
 719     KFileItem item;
 720
 721     const QModelIndex index = itemView()->indexAt(pos);
 722     if (isValidNameIndex(index)) {
 723         item = fileItem(index);
 724     }
 725
 726     emit requestContextMenu(item, url());
 727 }
 728
 729 void DolphinView::dropUrls(const KUrl::List& urls,
 730                            const KUrl& destPath,
 731                            const QModelIndex& destIndex,
 732                            QWidget* source)
 733 {
 734     KFileItem directory;
 735     if (isValidNameIndex(destIndex)) {
 736         KFileItem item = fileItem(destIndex);
 737         Q_ASSERT(!item.isNull());
 738         if (item.isDir()) {
 739             // the URLs are dropped above a directory
 740             directory = item;
 741         }
 742     }
 743
 744     if ((directory.isNull()) && (source == itemView())) {
 745         // The dropping is done into the same viewport where
 746         // the dragging has been started. Just ignore this...
 747         return;
 748     }
 749
 750     const KUrl& destination = (directory.isNull()) ?
 751                               destPath : directory.url();
 752     dropUrls(urls, destination);
 753 }
 754
 755 void DolphinView::dropUrls(const KUrl::List& urls,
 756                            const KUrl& destination)
 757 {
 758     emit urlsDropped(urls, destination);
 759 }
 760
 761 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 762 {
 763     ViewProperties props(viewPropertiesUrl());
 764     props.setSorting(sorting);
 765
 766     m_proxyModel->setSorting(sorting);
 767
 768     emit sortingChanged(sorting);
 769 }
 770
 771 void DolphinView::updateSortOrder(Qt::SortOrder order)
 772 {
 773     ViewProperties props(viewPropertiesUrl());
 774     props.setSortOrder(order);
 775
 776     m_proxyModel->setSortOrder(order);
 777
 778     emit sortOrderChanged(order);
 779 }
 780
 781 void DolphinView::emitContentsMoved()
 782 {
 783     // only emit the contents moved signal if:
 784     // - no directory loading is ongoing (this would reset the contents position
 785     //   always to (0, 0))
 786     // - if the Column View is active: the column view does an automatic
 787     //   positioning during the loading operation, which must be remembered
 788     if (!m_loadingDirectory || isColumnViewActive()) {
 789         const QPoint pos(contentsPosition());
 790         emit contentsMoved(pos.x(), pos.y());
 791     }
 792 }
 793
 794 void DolphinView::updateCutItems()
 795 {
 796     // restore the icons of all previously selected items to the
 797     // original state...
 798     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 799     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 800     while (it != end) {
 801         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 802         if (index.isValid()) {
 803             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 804         }
 805         ++it;
 806     }
 807     m_cutItemsCache.clear();
 808
 809     // ... and apply an item effect to all currently cut items
 810     applyCutItemEffect();
 811 }
 812
 813 void DolphinView::showHoverInformation(const KFileItem& item)
 814 {
 815     if (hasSelection()) {
 816         return;
 817     }
 818
 819     emit requestItemInfo(item);
 820 }
 821
 822 void DolphinView::clearHoverInformation()
 823 {
 824     emit requestItemInfo(KFileItem());
 825 }
 826
 827
 828 void DolphinView::createView()
 829 {
 830     KFileItemDelegate::InformationList infoList;
 831     if (m_fileItemDelegate != 0) {
 832         infoList = m_fileItemDelegate->showInformation();
 833     }
 834
 835     // delete current view
 836     QAbstractItemView* view = itemView();
 837     if (view != 0) {
 838         m_topLayout->removeWidget(view);
 839         view->close();
 840         view->deleteLater();
 841         view = 0;
 842         m_iconsView = 0;
 843         m_detailsView = 0;
 844         m_columnView = 0;
 845         m_fileItemDelegate = 0;
 846     }
 847
 848     Q_ASSERT(m_iconsView == 0);
 849     Q_ASSERT(m_detailsView == 0);
 850     Q_ASSERT(m_columnView == 0);
 851
 852     // ... and recreate it representing the current mode
 853     switch (m_mode) {
 854     case IconsView: {
 855         m_iconsView = new DolphinIconsView(this, m_controller);
 856         view = m_iconsView;
 857         break;
 858     }
 859
 860     case DetailsView:
 861         m_detailsView = new DolphinDetailsView(this, m_controller);
 862         view = m_detailsView;
 863         break;
 864
 865     case ColumnView:
 866         m_columnView = new DolphinColumnView(this, m_controller);
 867         view = m_columnView;
 868         break;
 869     }
 870
 871     Q_ASSERT(view != 0);
 872
 873     m_fileItemDelegate = new KFileItemDelegate(view);
 874     m_fileItemDelegate->setShowInformation(infoList);
 875     view->setItemDelegate(m_fileItemDelegate);
 876
 877     view->setModel(m_proxyModel);
 878     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 879
 880     new KMimeTypeResolver(view, m_dolphinModel);
 881     m_topLayout->insertWidget(1, view);
 882
 883     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 884             this, SLOT(emitSelectionChangedSignal()));
 885     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 886             this, SLOT(emitContentsMoved()));
 887     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 888             this, SLOT(emitContentsMoved()));
 889     view->setFocus();
 890 }
 891
 892 QAbstractItemView* DolphinView::itemView() const
 893 {
 894     if (m_detailsView != 0) {
 895         return m_detailsView;
 896     } else if (m_columnView != 0) {
 897         return m_columnView;
 898     }
 899
 900     return m_iconsView;
 901 }
 902
 903 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 904 {
 905     return index.isValid() && (index.column() == DolphinModel::Name);
 906 }
 907
 908 bool DolphinView::isCutItem(const KFileItem& item) const
 909 {
 910     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 911     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 912
 913     const KUrl& itemUrl = item.url();
 914     KUrl::List::const_iterator it = cutUrls.begin();
 915     const KUrl::List::const_iterator end = cutUrls.end();
 916     while (it != end) {
 917         if (*it == itemUrl) {
 918             return true;
 919         }
 920         ++it;
 921     }
 922
 923     return false;
 924 }
 925
 926 void DolphinView::applyCutItemEffect()
 927 {
 928     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 929     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 930         return;
 931     }
 932
 933     KFileItemList items(m_dirLister->items());
 934     KFileItemList::const_iterator it = items.begin();
 935     const KFileItemList::const_iterator end = items.end();
 936     while (it != end) {
 937         const KFileItem item = *it;
 938         if (isCutItem(item)) {
 939             const QModelIndex index = m_dolphinModel->indexForItem(item);
 940             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 941             if (value.type() == QVariant::Icon) {
 942                 const QIcon icon(qvariant_cast<QIcon>(value));
 943                 QPixmap pixmap = icon.pixmap(128, 128);
 944
 945                 // remember current pixmap for the item to be able
 946                 // to restore it when other items get cut
 947                 CutItem cutItem;
 948                 cutItem.url = item.url();
 949                 cutItem.pixmap = pixmap;
 950                 m_cutItemsCache.append(cutItem);
 951
 952                 // apply icon effect to the cut item
 953                 KIconEffect iconEffect;
 954                 pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 955                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 956             }
 957         }
 958         ++it;
 959     }
 960 }
 961
 962 KToggleAction* DolphinView::iconsModeAction(KActionCollection* actionCollection)
 963 {
 964     KToggleAction* iconsView = actionCollection->add<KToggleAction>("icons");
 965     iconsView->setText(i18nc("@action:inmenu View Mode", "Icons"));
 966     iconsView->setShortcut(Qt::CTRL | Qt::Key_1);
 967     iconsView->setIcon(KIcon("fileview-icon"));
 968     iconsView->setData(QVariant::fromValue(IconsView));
 969     return iconsView;
 970 }
 971
 972 KToggleAction* DolphinView::detailsModeAction(KActionCollection* actionCollection)
 973 {
 974     KToggleAction* detailsView = actionCollection->add<KToggleAction>("details");
 975     detailsView->setText(i18nc("@action:inmenu View Mode", "Details"));
 976     detailsView->setShortcut(Qt::CTRL | Qt::Key_2);
 977     detailsView->setIcon(KIcon("fileview-detailed"));
 978     detailsView->setData(QVariant::fromValue(DetailsView));
 979     return detailsView;
 980 }
 981
 982 KToggleAction* DolphinView::columnsModeAction(KActionCollection* actionCollection)
 983 {
 984     KToggleAction* columnView = actionCollection->add<KToggleAction>("columns");
 985     columnView->setText(i18nc("@action:inmenu View Mode", "Columns"));
 986     columnView->setShortcut(Qt::CTRL | Qt::Key_3);
 987     columnView->setIcon(KIcon("fileview-column"));
 988     columnView->setData(QVariant::fromValue(ColumnView));
 989     return columnView;
 990 }
 991
 992 QString DolphinView::currentViewModeActionName() const
 993 {
 994     switch (m_mode) {
 995     case DolphinView::IconsView:
 996         return "icons";
 997     case DolphinView::DetailsView:
 998         return "details";
 999     case DolphinView::ColumnView:
1000         return "columns";
1001     }
1002     return QString(); // can't happen
1003 }
1004
1005 #include "dolphinview.moc"