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_initializeColumnView(false),
  64     m_storedCategorizedSorting(false),
  65     m_mode(DolphinView::IconsView),
  66     m_topLayout(0),
  67     m_controller(0),
  68     m_iconsView(0),
  69     m_detailsView(0),
  70     m_columnView(0),
  71     m_fileItemDelegate(0),
  72     m_dolphinModel(dolphinModel),
  73     m_dirLister(dirLister),
  74     m_proxyModel(proxyModel)
  75 {
  76     setFocusPolicy(Qt::StrongFocus);
  77     m_topLayout = new QVBoxLayout(this);
  78     m_topLayout->setSpacing(0);
  79     m_topLayout->setMargin(0);
  80
  81     QClipboard* clipboard = QApplication::clipboard();
  82     connect(clipboard, SIGNAL(dataChanged()),
  83             this, SLOT(updateCutItems()));
  84
  85     connect(m_dirLister, SIGNAL(completed()),
  86             this, SLOT(updateCutItems()));
  87     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
  88             this, SLOT(generatePreviews(const KFileItemList&)));
  89
  90     m_controller = new DolphinController(this);
  91     m_controller->setUrl(url);
  92     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  93             this, SIGNAL(urlChanged(const KUrl&)));
  94     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  95             this, SLOT(openContextMenu(const QPoint&)));
  96     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
  97             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
  98     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
  99             this, SLOT(updateSorting(DolphinView::Sorting)));
 100     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 101             this, SLOT(updateSortOrder(Qt::SortOrder)));
 102     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 103             this, SLOT(triggerItem(const QModelIndex&)));
 104     connect(m_controller, SIGNAL(activated()),
 105             this, SLOT(activate()));
 106     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 107             this, SLOT(showHoverInformation(const QModelIndex&)));
 108     connect(m_controller, SIGNAL(viewportEntered()),
 109             this, SLOT(clearHoverInformation()));
 110
 111     applyViewProperties(url);
 112     m_topLayout->addWidget(itemView());
 113 }
 114
 115 DolphinView::~DolphinView()
 116 {
 117 }
 118
 119 const KUrl& DolphinView::url() const
 120 {
 121     return m_controller->url();
 122 }
 123
 124 KUrl DolphinView::rootUrl() const
 125 {
 126     return isColumnViewActive() ? m_dirLister->url() : url();
 127 }
 128
 129 void DolphinView::setActive(bool active)
 130 {
 131     if (active == m_active) {
 132         return;
 133     }
 134
 135     m_active = active;
 136
 137     updateViewportColor();
 138     update();
 139
 140     if (active) {
 141         emit activated();
 142     }
 143 }
 144
 145 bool DolphinView::isActive() const
 146 {
 147     return m_active;
 148 }
 149
 150 void DolphinView::setMode(Mode mode)
 151 {
 152     if (mode == m_mode) {
 153         return; // the wished mode is already set
 154     }
 155
 156     m_mode = mode;
 157
 158     if (isColumnViewActive()) {
 159         // When changing the mode in the column view, it makes sense
 160         // to go back to the root URL of the column view automatically.
 161         // Otherwise there it would not be possible to turn off the column view
 162         // without focusing the first column.
 163         setUrl(m_dirLister->url());
 164         m_controller->setUrl(m_dirLister->url());
 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     startDirLister(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     startDirLister(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     emit showHiddenFilesChanged();
 223
 224     startDirLister(viewPropsUrl, true);
 225 }
 226
 227 bool DolphinView::showHiddenFiles() const
 228 {
 229     return m_dirLister->showingDotFiles();
 230 }
 231
 232 void DolphinView::setCategorizedSorting(bool categorized)
 233 {
 234     if (categorized == categorizedSorting()) {
 235         return;
 236     }
 237
 238     // setCategorizedSorting(true) may only get invoked
 239     // if the view supports categorized sorting
 240     Q_ASSERT(!categorized || supportsCategorizedSorting());
 241
 242     ViewProperties props(viewPropertiesUrl());
 243     props.setCategorizedSorting(categorized);
 244     props.save();
 245
 246     m_storedCategorizedSorting = categorized;
 247     m_proxyModel->setCategorizedModel(categorized);
 248     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 249
 250     emit categorizedSortingChanged();
 251 }
 252
 253 bool DolphinView::categorizedSorting() const
 254 {
 255     // If all view modes would support categorized sorting, returning
 256     // m_proxyModel->isCategorizedModel() would be the way to go. As
 257     // currently only the icons view supports caterized sorting, we remember
 258     // the stored view properties state in m_storedCategorizedSorting and
 259     // return this state. The application takes care to disable the corresponding
 260     // checkbox by checking DolphinView::supportsCategorizedSorting() to indicate
 261     // that this setting is not applied to the current view mode.
 262     return m_storedCategorizedSorting;
 263 }
 264
 265 bool DolphinView::supportsCategorizedSorting() const
 266 {
 267     return m_iconsView != 0;
 268 }
 269
 270 void DolphinView::selectAll()
 271 {
 272     itemView()->selectAll();
 273 }
 274
 275 void DolphinView::invertSelection()
 276 {
 277     if (isColumnViewActive()) {
 278         // QAbstractItemView does not offer a virtual method invertSelection()
 279         // as counterpart to QAbstractItemView::selectAll(). This makes it
 280         // necessary to delegate the inverting of the selection to the
 281         // column view, as only the selection of the active column should get
 282         // inverted.
 283         m_columnView->invertSelection();
 284     } else {
 285         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 286         const QAbstractItemModel* itemModel = selectionModel->model();
 287
 288         const QModelIndex topLeft = itemModel->index(0, 0);
 289         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 290                                                          itemModel->columnCount() - 1);
 291
 292         const QItemSelection selection(topLeft, bottomRight);
 293         selectionModel->select(selection, QItemSelectionModel::Toggle);
 294     }
 295 }
 296
 297 bool DolphinView::hasSelection() const
 298 {
 299     return itemView()->selectionModel()->hasSelection();
 300 }
 301
 302 void DolphinView::clearSelection()
 303 {
 304     itemView()->selectionModel()->clear();
 305 }
 306
 307 KFileItemList DolphinView::selectedItems() const
 308 {
 309     const QAbstractItemView* view = itemView();
 310
 311     // Our view has a selection, we will map them back to the DolphinModel
 312     // and then fill the KFileItemList.
 313     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 314
 315     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 316     KFileItemList itemList;
 317
 318     const QModelIndexList indexList = selection.indexes();
 319     foreach (QModelIndex index, indexList) {
 320         KFileItem item = m_dolphinModel->itemForIndex(index);
 321         if (!item.isNull()) {
 322             itemList.append(item);
 323         }
 324     }
 325
 326     return itemList;
 327 }
 328
 329 KUrl::List DolphinView::selectedUrls() const
 330 {
 331     KUrl::List urls;
 332     const KFileItemList list = selectedItems();
 333     foreach (KFileItem item, list) {
 334         urls.append(item.url());
 335     }
 336     return urls;
 337 }
 338
 339 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 340 {
 341     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 342     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 343 }
 344
 345 void DolphinView::setContentsPosition(int x, int y)
 346 {
 347     QAbstractItemView* view = itemView();
 348
 349     // the ColumnView takes care itself for the horizontal scrolling
 350     if (!isColumnViewActive()) {
 351         view->horizontalScrollBar()->setValue(x);
 352     }
 353     view->verticalScrollBar()->setValue(y);
 354
 355     m_loadingDirectory = false;
 356 }
 357
 358 QPoint DolphinView::contentsPosition() const
 359 {
 360     const int x = itemView()->horizontalScrollBar()->value();
 361     const int y = itemView()->verticalScrollBar()->value();
 362     return QPoint(x, y);
 363 }
 364
 365 void DolphinView::zoomIn()
 366 {
 367     m_controller->triggerZoomIn();
 368 }
 369
 370 void DolphinView::zoomOut()
 371 {
 372     m_controller->triggerZoomOut();
 373 }
 374
 375 bool DolphinView::isZoomInPossible() const
 376 {
 377     return m_controller->isZoomInPossible();
 378 }
 379
 380 bool DolphinView::isZoomOutPossible() const
 381 {
 382     return m_controller->isZoomOutPossible();
 383 }
 384
 385 void DolphinView::setSorting(Sorting sorting)
 386 {
 387     if (sorting != this->sorting()) {
 388         updateSorting(sorting);
 389     }
 390 }
 391
 392 DolphinView::Sorting DolphinView::sorting() const
 393 {
 394     return m_proxyModel->sorting();
 395 }
 396
 397 void DolphinView::setSortOrder(Qt::SortOrder order)
 398 {
 399     if (sortOrder() != order) {
 400         updateSortOrder(order);
 401     }
 402 }
 403
 404 Qt::SortOrder DolphinView::sortOrder() const
 405 {
 406     return m_proxyModel->sortOrder();
 407 }
 408
 409 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 410 {
 411     const KUrl viewPropsUrl = viewPropertiesUrl();
 412     ViewProperties props(viewPropsUrl);
 413     props.setAdditionalInfo(info);
 414
 415     m_controller->setAdditionalInfoCount(info.count());
 416     m_fileItemDelegate->setShowInformation(info);
 417
 418     emit additionalInfoChanged(info);
 419     startDirLister(viewPropsUrl, true);
 420 }
 421
 422 KFileItemDelegate::InformationList DolphinView::additionalInfo() const
 423 {
 424     return m_fileItemDelegate->showInformation();
 425 }
 426
 427 void DolphinView::reload()
 428 {
 429     setUrl(url());
 430     startDirLister(url(), true);
 431 }
 432
 433 void DolphinView::refresh()
 434 {
 435     createView();
 436     applyViewProperties(m_controller->url());
 437     reload();
 438     updateViewportColor();
 439 }
 440
 441 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 442 {
 443     if (m_controller->url() == url) {
 444         return;
 445     }
 446
 447     const bool restoreColumnView =  !rootUrl.isEmpty()
 448                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 449                                     && rootUrl.isParentOf(url);
 450
 451     m_controller->setUrl(url); // emits urlChanged, which we forward
 452
 453     if (restoreColumnView) {
 454         applyViewProperties(rootUrl);
 455         startDirLister(rootUrl);
 456         // Restoring the column view relies on the URL-history. It might be possible
 457         // that the view properties have been changed or deleted in the meantime, so
 458         // it cannot be asserted that really a column view has been created:
 459         if (itemView() == m_columnView) {
 460             m_columnView->showColumn(url);
 461         }
 462     } else {
 463         applyViewProperties(url);
 464         startDirLister(url);
 465     }
 466
 467     itemView()->setFocus();
 468
 469     emit startedPathLoading(url);
 470 }
 471
 472 void DolphinView::setUrl(const KUrl& url)
 473 {
 474     updateView(url, KUrl());
 475 }
 476
 477 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 478 {
 479     QWidget::mouseReleaseEvent(event);
 480     setActive(true);
 481 }
 482 void DolphinView::activate()
 483 {
 484     setActive(true);
 485 }
 486
 487 void DolphinView::triggerItem(const QModelIndex& index)
 488 {
 489     Q_ASSERT(index.isValid());
 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     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 499
 500     if (item.isNull()) {
 501         return;
 502     }
 503
 504     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 505 }
 506
 507 void DolphinView::generatePreviews(const KFileItemList& items)
 508 {
 509     if (m_controller->showPreview()) {
 510         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 511         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 512                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 513     }
 514 }
 515
 516 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 517 {
 518     Q_ASSERT(!item.isNull());
 519     if (item.url().directory() != m_dirLister->url().path()) {
 520         // the preview job is still working on items of an older URL, hence
 521         // the item is not part of the directory model anymore
 522         return;
 523     }
 524
 525     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 526     if (idx.isValid() && (idx.column() == 0)) {
 527         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 528         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 529             KIconEffect iconEffect;
 530             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 531             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 532         } else {
 533             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 534         }
 535     }
 536 }
 537
 538 void DolphinView::emitSelectionChangedSignal()
 539 {
 540     emit selectionChanged(DolphinView::selectedItems());
 541 }
 542
 543 void DolphinView::startDirLister(const KUrl& url, bool reload)
 544 {
 545     if (!url.isValid()) {
 546         const QString location(url.pathOrUrl());
 547         if (location.isEmpty()) {
 548             emit errorMessage(i18nc("@info:status", "The location is empty."));
 549         } else {
 550             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 551         }
 552         return;
 553     }
 554
 555     m_cutItemsCache.clear();
 556     m_loadingDirectory = true;
 557
 558     m_dirLister->stop();
 559
 560     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 561     m_initializeColumnView = false;
 562
 563     if (keepOldDirs) {
 564         // keeping old directories is only necessary for hierarchical views
 565         // like the column view
 566         if (reload) {
 567             // for the column view it is not enough to reload the directory lister,
 568             // so this task is delegated to the column view directly
 569             m_columnView->reload();
 570         } else if (m_dirLister->directories().contains(url)) {
 571             // The dir lister contains the directory already, so
 572             // KDirLister::openUrl() may not get invoked twice.
 573             m_dirLister->updateDirectory(url);
 574         } else {
 575             const KUrl& dirListerUrl = m_dirLister->url();
 576             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 577                 // The current URL is not a child of the dir lister
 578                 // URL. This may happen when e. g. a place has been selected
 579                 // and hence the view must be reset.
 580                 m_dirLister->openUrl(url, KDirLister::NoFlags);
 581             }
 582         }
 583     } else {
 584         m_dirLister->openUrl(url, reload ? KDirLister::Reload : KDirLister::NoFlags);
 585     }
 586 }
 587
 588 KUrl DolphinView::viewPropertiesUrl() const
 589 {
 590     if (isColumnViewActive()) {
 591         return m_dirLister->url();
 592     }
 593
 594     return url();
 595 }
 596
 597 void DolphinView::applyViewProperties(const KUrl& url)
 598 {
 599     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 600         // The column view is active, hence don't apply the view properties
 601         // of sub directories (represented by columns) to the view. The
 602         // view always represents the properties of the first column.
 603         return;
 604     }
 605
 606     const ViewProperties props(url);
 607
 608     const Mode mode = props.viewMode();
 609     if (m_mode != mode) {
 610         m_mode = mode;
 611         createView();
 612         emit modeChanged();
 613
 614         if (m_mode == ColumnView) {
 615             // The mode has been changed to the Column View. When starting the dir
 616             // lister with DolphinView::startDirLister() it is important to give a
 617             // hint that the dir lister may not keep the current directory
 618             // although this is the default for showing a hierarchy.
 619             m_initializeColumnView = true;
 620         }
 621     }
 622     if (itemView() == 0) {
 623         createView();
 624     }
 625     Q_ASSERT(itemView() != 0);
 626     Q_ASSERT(m_fileItemDelegate != 0);
 627
 628     const bool showHiddenFiles = props.showHiddenFiles();
 629     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 630         m_dirLister->setShowingDotFiles(showHiddenFiles);
 631         emit showHiddenFilesChanged();
 632     }
 633
 634     m_storedCategorizedSorting = props.categorizedSorting();
 635     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 636     if (categorized != m_proxyModel->isCategorizedModel()) {
 637         m_proxyModel->setCategorizedModel(categorized);
 638         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 639         emit categorizedSortingChanged();
 640     }
 641
 642     const DolphinView::Sorting sorting = props.sorting();
 643     if (sorting != m_proxyModel->sorting()) {
 644         m_proxyModel->setSorting(sorting);
 645         emit sortingChanged(sorting);
 646     }
 647
 648     const Qt::SortOrder sortOrder = props.sortOrder();
 649     if (sortOrder != m_proxyModel->sortOrder()) {
 650         m_proxyModel->setSortOrder(sortOrder);
 651         emit sortOrderChanged(sortOrder);
 652     }
 653
 654     KFileItemDelegate::InformationList info = props.additionalInfo();
 655     if (info != m_fileItemDelegate->showInformation()) {
 656         m_controller->setAdditionalInfoCount(info.count());
 657         m_fileItemDelegate->setShowInformation(info);
 658         emit additionalInfoChanged(info);
 659     }
 660
 661     const bool showPreview = props.showPreview();
 662     if (showPreview != m_controller->showPreview()) {
 663         m_controller->setShowPreview(showPreview);
 664         emit showPreviewChanged();
 665     }
 666 }
 667
 668 void DolphinView::changeSelection(const KFileItemList& selection)
 669 {
 670     clearSelection();
 671     if (selection.isEmpty()) {
 672         return;
 673     }
 674     const KUrl& baseUrl = url();
 675     KUrl url;
 676     QItemSelection new_selection;
 677     foreach(const KFileItem& item, selection) {
 678         url = item.url().upUrl();
 679         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 680             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 681             new_selection.select(index, index);
 682         }
 683     }
 684     itemView()->selectionModel()->select(new_selection,
 685                                          QItemSelectionModel::ClearAndSelect
 686                                          | QItemSelectionModel::Current);
 687 }
 688
 689 void DolphinView::openContextMenu(const QPoint& pos)
 690 {
 691     KFileItem item;
 692
 693     const QModelIndex index = itemView()->indexAt(pos);
 694     if (isValidNameIndex(index)) {
 695         item = fileItem(index);
 696     }
 697
 698     emit requestContextMenu(item, url());
 699 }
 700
 701 void DolphinView::dropUrls(const KUrl::List& urls,
 702                            const KUrl& destPath,
 703                            const QModelIndex& destIndex,
 704                            QWidget* source)
 705 {
 706     KFileItem directory;
 707     if (isValidNameIndex(destIndex)) {
 708         KFileItem item = fileItem(destIndex);
 709         Q_ASSERT(!item.isNull());
 710         if (item.isDir()) {
 711             // the URLs are dropped above a directory
 712             directory = item;
 713         }
 714     }
 715
 716     if ((directory.isNull()) && (source == itemView())) {
 717         // The dropping is done into the same viewport where
 718         // the dragging has been started. Just ignore this...
 719         return;
 720     }
 721
 722     const KUrl& destination = (directory.isNull()) ?
 723                               destPath : directory.url();
 724     dropUrls(urls, destination);
 725 }
 726
 727 void DolphinView::dropUrls(const KUrl::List& urls,
 728                            const KUrl& destination)
 729 {
 730     emit urlsDropped(urls, destination);
 731 }
 732
 733 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 734 {
 735     ViewProperties props(viewPropertiesUrl());
 736     props.setSorting(sorting);
 737
 738     m_proxyModel->setSorting(sorting);
 739
 740     emit sortingChanged(sorting);
 741 }
 742
 743 void DolphinView::updateSortOrder(Qt::SortOrder order)
 744 {
 745     ViewProperties props(viewPropertiesUrl());
 746     props.setSortOrder(order);
 747
 748     m_proxyModel->setSortOrder(order);
 749
 750     emit sortOrderChanged(order);
 751 }
 752
 753 void DolphinView::emitContentsMoved()
 754 {
 755     // only emit the contents moved signal if:
 756     // - no directory loading is ongoing (this would reset the contents position
 757     //   always to (0, 0))
 758     // - if the Column View is active: the column view does an automatic
 759     //   positioning during the loading operation, which must be remembered
 760     if (!m_loadingDirectory || isColumnViewActive()) {
 761         const QPoint pos(contentsPosition());
 762         emit contentsMoved(pos.x(), pos.y());
 763     }
 764 }
 765
 766 void DolphinView::updateCutItems()
 767 {
 768     // restore the icons of all previously selected items to the
 769     // original state...
 770     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 771     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 772     while (it != end) {
 773         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 774         if (index.isValid()) {
 775             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 776         }
 777         ++it;
 778     }
 779     m_cutItemsCache.clear();
 780
 781     // ... and apply an item effect to all currently cut items
 782     applyCutItemEffect();
 783 }
 784
 785 void DolphinView::showHoverInformation(const QModelIndex& index)
 786 {
 787     if (hasSelection()) {
 788         return;
 789     }
 790
 791     const KFileItem item = fileItem(index);
 792     if (!item.isNull()) {
 793         emit requestItemInfo(item);
 794     }
 795 }
 796
 797 void DolphinView::clearHoverInformation()
 798 {
 799     emit requestItemInfo(KFileItem());
 800 }
 801
 802
 803 void DolphinView::createView()
 804 {
 805     KFileItemDelegate::InformationList infoList;
 806     if (m_fileItemDelegate != 0) {
 807         infoList = m_fileItemDelegate->showInformation();
 808     }
 809
 810     // delete current view
 811     QAbstractItemView* view = itemView();
 812     if (view != 0) {
 813         m_topLayout->removeWidget(view);
 814         view->close();
 815         view->deleteLater();
 816         view = 0;
 817         m_iconsView = 0;
 818         m_detailsView = 0;
 819         m_columnView = 0;
 820         m_fileItemDelegate = 0;
 821     }
 822
 823     Q_ASSERT(m_iconsView == 0);
 824     Q_ASSERT(m_detailsView == 0);
 825     Q_ASSERT(m_columnView == 0);
 826
 827     // ... and recreate it representing the current mode
 828     switch (m_mode) {
 829     case IconsView: {
 830         m_iconsView = new DolphinIconsView(this, m_controller);
 831         view = m_iconsView;
 832         break;
 833     }
 834
 835     case DetailsView:
 836         m_detailsView = new DolphinDetailsView(this, m_controller);
 837         view = m_detailsView;
 838         break;
 839
 840     case ColumnView:
 841         m_columnView = new DolphinColumnView(this, m_controller);
 842         view = m_columnView;
 843         break;
 844     }
 845
 846     Q_ASSERT(view != 0);
 847
 848     m_fileItemDelegate = new KFileItemDelegate(view);
 849     m_fileItemDelegate->setShowInformation(infoList);
 850     view->setItemDelegate(m_fileItemDelegate);
 851
 852     view->setModel(m_proxyModel);
 853     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 854
 855     new KMimeTypeResolver(view, m_dolphinModel);
 856     m_topLayout->insertWidget(1, view);
 857
 858     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 859             this, SLOT(emitSelectionChangedSignal()));
 860     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 861             this, SLOT(emitContentsMoved()));
 862     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 863             this, SLOT(emitContentsMoved()));
 864     view->setFocus();
 865 }
 866
 867 QAbstractItemView* DolphinView::itemView() const
 868 {
 869     if (m_detailsView != 0) {
 870         return m_detailsView;
 871     } else if (m_columnView != 0) {
 872         return m_columnView;
 873     }
 874
 875     return m_iconsView;
 876 }
 877
 878 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 879 {
 880     return index.isValid() && (index.column() == DolphinModel::Name);
 881 }
 882
 883 bool DolphinView::isCutItem(const KFileItem& item) const
 884 {
 885     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 886     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 887
 888     const KUrl& itemUrl = item.url();
 889     KUrl::List::const_iterator it = cutUrls.begin();
 890     const KUrl::List::const_iterator end = cutUrls.end();
 891     while (it != end) {
 892         if (*it == itemUrl) {
 893             return true;
 894         }
 895         ++it;
 896     }
 897
 898     return false;
 899 }
 900
 901 void DolphinView::applyCutItemEffect()
 902 {
 903     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 904     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 905         return;
 906     }
 907
 908     KFileItemList items(m_dirLister->items());
 909     KFileItemList::const_iterator it = items.begin();
 910     const KFileItemList::const_iterator end = items.end();
 911     while (it != end) {
 912         const KFileItem item = *it;
 913         if (isCutItem(item)) {
 914             const QModelIndex index = m_dolphinModel->indexForItem(item);
 915             // Huh? the item is already known
 916             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 917             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 918             if (value.type() == QVariant::Icon) {
 919                 const QIcon icon(qvariant_cast<QIcon>(value));
 920                 QPixmap pixmap = icon.pixmap(128, 128);
 921
 922                 // remember current pixmap for the item to be able
 923                 // to restore it when other items get cut
 924                 CutItem cutItem;
 925                 cutItem.url = item.url();
 926                 cutItem.pixmap = pixmap;
 927                 m_cutItemsCache.append(cutItem);
 928
 929                 // apply icon effect to the cut item
 930                 KIconEffect iconEffect;
 931                 pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 932                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 933             }
 934         }
 935         ++it;
 936     }
 937 }
 938
 939 void DolphinView::updateViewportColor()
 940 {
 941     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 942     if (m_active) {
 943         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 944         emit selectionChanged(selectedItems());
 945     } else {
 946         color.setAlpha(0);
 947     }
 948
 949     QWidget* viewport = itemView()->viewport();
 950     QPalette palette;
 951     palette.setColor(viewport->backgroundRole(), color);
 952     viewport->setPalette(palette);
 953 }
 954
 955 #include "dolphinview.moc"