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 QList<KFileItem>&)),
  88             this, SLOT(generatePreviews(const QList<KFileItem>&)));
  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 != categorizedSorting()) {
 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 QList<KFileItem> 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     QList<KFileItem> 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 QList<KFileItem> list = selectedItems();
 333     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 334           it != end; ++it ) {
 335         urls.append((*it).url());
 336     }
 337     return urls;
 338 }
 339
 340 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 341 {
 342     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 343     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 344 }
 345
 346 void DolphinView::setContentsPosition(int x, int y)
 347 {
 348     QAbstractItemView* view = itemView();
 349
 350     // the ColumnView takes care itself for the horizontal scrolling
 351     if (!isColumnViewActive()) {
 352         view->horizontalScrollBar()->setValue(x);
 353     }
 354     view->verticalScrollBar()->setValue(y);
 355
 356     m_loadingDirectory = false;
 357 }
 358
 359 QPoint DolphinView::contentsPosition() const
 360 {
 361     const int x = itemView()->horizontalScrollBar()->value();
 362     const int y = itemView()->verticalScrollBar()->value();
 363     return QPoint(x, y);
 364 }
 365
 366 void DolphinView::zoomIn()
 367 {
 368     m_controller->triggerZoomIn();
 369 }
 370
 371 void DolphinView::zoomOut()
 372 {
 373     m_controller->triggerZoomOut();
 374 }
 375
 376 bool DolphinView::isZoomInPossible() const
 377 {
 378     return m_controller->isZoomInPossible();
 379 }
 380
 381 bool DolphinView::isZoomOutPossible() const
 382 {
 383     return m_controller->isZoomOutPossible();
 384 }
 385
 386 void DolphinView::setSorting(Sorting sorting)
 387 {
 388     if (sorting != this->sorting()) {
 389         updateSorting(sorting);
 390     }
 391 }
 392
 393 DolphinView::Sorting DolphinView::sorting() const
 394 {
 395     return m_proxyModel->sorting();
 396 }
 397
 398 void DolphinView::setSortOrder(Qt::SortOrder order)
 399 {
 400     if (sortOrder() != order) {
 401         updateSortOrder(order);
 402     }
 403 }
 404
 405 Qt::SortOrder DolphinView::sortOrder() const
 406 {
 407     return m_proxyModel->sortOrder();
 408 }
 409
 410 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 411 {
 412     const KUrl viewPropsUrl = viewPropertiesUrl();
 413     ViewProperties props(viewPropsUrl);
 414     props.setAdditionalInfo(info);
 415
 416     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 417     m_fileItemDelegate->setAdditionalInformation(info);
 418
 419     emit additionalInfoChanged(info);
 420     startDirLister(viewPropsUrl, true);
 421 }
 422
 423 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 424 {
 425     return m_fileItemDelegate->additionalInformation();
 426 }
 427
 428 void DolphinView::reload()
 429 {
 430     setUrl(url());
 431     startDirLister(url(), true);
 432 }
 433
 434 void DolphinView::refresh()
 435 {
 436     createView();
 437     applyViewProperties(m_controller->url());
 438     reload();
 439     updateViewportColor();
 440 }
 441
 442 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 443 {
 444     if (m_controller->url() == url) {
 445         return;
 446     }
 447
 448     const bool restoreColumnView =  !rootUrl.isEmpty()
 449                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 450                                     && rootUrl.isParentOf(url);
 451
 452     m_controller->setUrl(url); // emits urlChanged, which we forward
 453
 454     if (restoreColumnView) {
 455         applyViewProperties(rootUrl);
 456         Q_ASSERT(itemView() == m_columnView);
 457         startDirLister(rootUrl);
 458         m_columnView->showColumn(url);
 459     } else {
 460         applyViewProperties(url);
 461         startDirLister(url);
 462     }
 463
 464     itemView()->setFocus();
 465
 466     emit startedPathLoading(url);
 467 }
 468
 469 void DolphinView::setUrl(const KUrl& url)
 470 {
 471     updateView(url, KUrl());
 472 }
 473
 474 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 475 {
 476     QWidget::mouseReleaseEvent(event);
 477     setActive(true);
 478 }
 479 void DolphinView::activate()
 480 {
 481     setActive(true);
 482 }
 483
 484 void DolphinView::triggerItem(const QModelIndex& index)
 485 {
 486     Q_ASSERT(index.isValid());
 487
 488     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 489     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 490         // items are selected by the user, hence don't trigger the
 491         // item specified by 'index'
 492         return;
 493     }
 494
 495     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 496
 497     if (item.isNull()) {
 498         return;
 499     }
 500
 501     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 502 }
 503
 504 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 505 {
 506     if (m_controller->showPreview()) {
 507         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 508         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 509                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 510     }
 511 }
 512
 513 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 514 {
 515     Q_ASSERT(!item.isNull());
 516     if (item.url().directory() != m_dirLister->url().path()) {
 517         // the preview job is still working on items of an older URL, hence
 518         // the item is not part of the directory model anymore
 519         return;
 520     }
 521
 522     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 523     if (idx.isValid() && (idx.column() == 0)) {
 524         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 525         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 526             KIconEffect iconEffect;
 527             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 528             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 529         } else {
 530             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 531         }
 532     }
 533 }
 534
 535 void DolphinView::emitSelectionChangedSignal()
 536 {
 537     emit selectionChanged(DolphinView::selectedItems());
 538 }
 539
 540 void DolphinView::startDirLister(const KUrl& url, bool reload)
 541 {
 542     if (!url.isValid()) {
 543         const QString location(url.pathOrUrl());
 544         if (location.isEmpty()) {
 545             emit errorMessage(i18nc("@info:status", "The location is empty."));
 546         } else {
 547             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 548         }
 549         return;
 550     }
 551
 552     m_cutItemsCache.clear();
 553     m_loadingDirectory = true;
 554
 555     m_dirLister->stop();
 556
 557     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 558     m_initializeColumnView = false;
 559
 560     if (keepOldDirs) {
 561         // keeping old directories is only necessary for hierarchical views
 562         // like the column view
 563         if (reload) {
 564             // for the column view it is not enough to reload the directory lister,
 565             // so this task is delegated to the column view directly
 566             m_columnView->reload();
 567         } else if (m_dirLister->directories().contains(url)) {
 568             // The dir lister contains the directory already, so
 569             // KDirLister::openUrl() may not get invoked twice.
 570             m_dirLister->updateDirectory(url);
 571         } else {
 572             const KUrl& dirListerUrl = m_dirLister->url();
 573             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 574                 // The current URL is not a child of the dir lister
 575                 // URL. This may happen when e. g. a place has been selected
 576                 // and hence the view must be reset.
 577                 m_dirLister->openUrl(url, false, false);
 578             }
 579         }
 580     } else {
 581         m_dirLister->openUrl(url, false, reload);
 582     }
 583 }
 584
 585 KUrl DolphinView::viewPropertiesUrl() const
 586 {
 587     if (isColumnViewActive()) {
 588         return m_dirLister->url();
 589     }
 590
 591     return url();
 592 }
 593
 594 void DolphinView::applyViewProperties(const KUrl& url)
 595 {
 596     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 597         // The column view is active, hence don't apply the view properties
 598         // of sub directories (represented by columns) to the view. The
 599         // view always represents the properties of the first column.
 600         return;
 601     }
 602
 603     const ViewProperties props(url);
 604
 605     const Mode mode = props.viewMode();
 606     if (m_mode != mode) {
 607         m_mode = mode;
 608         createView();
 609         emit modeChanged();
 610
 611         if (m_mode == ColumnView) {
 612             // The mode has been changed to the Column View. When starting the dir
 613             // lister with DolphinView::startDirLister() it is important to give a
 614             // hint that the dir lister may not keep the current directory
 615             // although this is the default for showing a hierarchy.
 616             m_initializeColumnView = true;
 617         }
 618     }
 619     if (itemView() == 0) {
 620         createView();
 621     }
 622     Q_ASSERT(itemView() != 0);
 623     Q_ASSERT(m_fileItemDelegate != 0);
 624
 625     const bool showHiddenFiles = props.showHiddenFiles();
 626     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 627         m_dirLister->setShowingDotFiles(showHiddenFiles);
 628         emit showHiddenFilesChanged();
 629     }
 630
 631     m_storedCategorizedSorting = props.categorizedSorting();
 632     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 633     if (categorized != categorizedSorting()) {
 634         m_proxyModel->setCategorizedModel(categorized);
 635         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 636         emit categorizedSortingChanged();
 637     }
 638
 639     const DolphinView::Sorting sorting = props.sorting();
 640     if (sorting != m_proxyModel->sorting()) {
 641         m_proxyModel->setSorting(sorting);
 642         emit sortingChanged(sorting);
 643     }
 644
 645     const Qt::SortOrder sortOrder = props.sortOrder();
 646     if (sortOrder != m_proxyModel->sortOrder()) {
 647         m_proxyModel->setSortOrder(sortOrder);
 648         emit sortOrderChanged(sortOrder);
 649     }
 650
 651     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 652     if (info != m_fileItemDelegate->additionalInformation()) {
 653         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 654         m_fileItemDelegate->setAdditionalInformation(info);
 655         emit additionalInfoChanged(info);
 656     }
 657
 658     const bool showPreview = props.showPreview();
 659     if (showPreview != m_controller->showPreview()) {
 660         m_controller->setShowPreview(showPreview);
 661         emit showPreviewChanged();
 662     }
 663 }
 664
 665 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 666 {
 667     clearSelection();
 668     if (selection.isEmpty()) {
 669         return;
 670     }
 671     const KUrl& baseUrl = url();
 672     KUrl url;
 673     QItemSelection new_selection;
 674     foreach(const KFileItem& item, selection) {
 675         url = item.url().upUrl();
 676         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 677             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 678             new_selection.select(index, index);
 679         }
 680     }
 681     itemView()->selectionModel()->select(new_selection,
 682                                          QItemSelectionModel::ClearAndSelect
 683                                          | QItemSelectionModel::Current);
 684 }
 685
 686 void DolphinView::openContextMenu(const QPoint& pos)
 687 {
 688     KFileItem item;
 689
 690     const QModelIndex index = itemView()->indexAt(pos);
 691     if (isValidNameIndex(index)) {
 692         item = fileItem(index);
 693     }
 694
 695     emit requestContextMenu(item, url());
 696 }
 697
 698 void DolphinView::dropUrls(const KUrl::List& urls,
 699                            const KUrl& destPath,
 700                            const QModelIndex& destIndex,
 701                            QWidget* source)
 702 {
 703     KFileItem directory;
 704     if (isValidNameIndex(destIndex)) {
 705         KFileItem item = fileItem(destIndex);
 706         Q_ASSERT(!item.isNull());
 707         if (item.isDir()) {
 708             // the URLs are dropped above a directory
 709             directory = item;
 710         }
 711     }
 712
 713     if ((directory.isNull()) && (source == itemView())) {
 714         // The dropping is done into the same viewport where
 715         // the dragging has been started. Just ignore this...
 716         return;
 717     }
 718
 719     const KUrl& destination = (directory.isNull()) ?
 720                               destPath : directory.url();
 721     dropUrls(urls, destination);
 722 }
 723
 724 void DolphinView::dropUrls(const KUrl::List& urls,
 725                            const KUrl& destination)
 726 {
 727     emit urlsDropped(urls, destination);
 728 }
 729
 730 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 731 {
 732     ViewProperties props(viewPropertiesUrl());
 733     props.setSorting(sorting);
 734
 735     m_proxyModel->setSorting(sorting);
 736
 737     emit sortingChanged(sorting);
 738 }
 739
 740 void DolphinView::updateSortOrder(Qt::SortOrder order)
 741 {
 742     ViewProperties props(viewPropertiesUrl());
 743     props.setSortOrder(order);
 744
 745     m_proxyModel->setSortOrder(order);
 746
 747     emit sortOrderChanged(order);
 748 }
 749
 750 void DolphinView::emitContentsMoved()
 751 {
 752     // only emit the contents moved signal if:
 753     // - no directory loading is ongoing (this would reset the contents position
 754     //   always to (0, 0))
 755     // - if the Column View is active: the column view does an automatic
 756     //   positioning during the loading operation, which must be remembered
 757     if (!m_loadingDirectory || isColumnViewActive()) {
 758         const QPoint pos(contentsPosition());
 759         emit contentsMoved(pos.x(), pos.y());
 760     }
 761 }
 762
 763 void DolphinView::updateCutItems()
 764 {
 765     // restore the icons of all previously selected items to the
 766     // original state...
 767     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 768     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 769     while (it != end) {
 770         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 771         if (index.isValid()) {
 772             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 773         }
 774         ++it;
 775     }
 776     m_cutItemsCache.clear();
 777
 778     // ... and apply an item effect to all currently cut items
 779     applyCutItemEffect();
 780 }
 781
 782 void DolphinView::showHoverInformation(const QModelIndex& index)
 783 {
 784     if (hasSelection()) {
 785         return;
 786     }
 787
 788     const KFileItem item = fileItem(index);
 789     if (!item.isNull()) {
 790         emit requestItemInfo(item);
 791     }
 792 }
 793
 794 void DolphinView::clearHoverInformation()
 795 {
 796     emit requestItemInfo(KFileItem());
 797 }
 798
 799
 800 void DolphinView::createView()
 801 {
 802     // delete current view
 803     QAbstractItemView* view = itemView();
 804     if (view != 0) {
 805         m_topLayout->removeWidget(view);
 806         view->close();
 807         view->deleteLater();
 808         view = 0;
 809         m_iconsView = 0;
 810         m_detailsView = 0;
 811         m_columnView = 0;
 812         m_fileItemDelegate = 0;
 813     }
 814
 815     Q_ASSERT(m_iconsView == 0);
 816     Q_ASSERT(m_detailsView == 0);
 817     Q_ASSERT(m_columnView == 0);
 818
 819     // ... and recreate it representing the current mode
 820     switch (m_mode) {
 821     case IconsView: {
 822         m_iconsView = new DolphinIconsView(this, m_controller);
 823         view = m_iconsView;
 824         break;
 825     }
 826
 827     case DetailsView:
 828         m_detailsView = new DolphinDetailsView(this, m_controller);
 829         view = m_detailsView;
 830         break;
 831
 832     case ColumnView:
 833         m_columnView = new DolphinColumnView(this, m_controller);
 834         view = m_columnView;
 835         break;
 836     }
 837
 838     Q_ASSERT(view != 0);
 839
 840     m_fileItemDelegate = new KFileItemDelegate(view);
 841     view->setItemDelegate(m_fileItemDelegate);
 842
 843     view->setModel(m_proxyModel);
 844     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 845
 846     new KMimeTypeResolver(view, m_dolphinModel);
 847     m_topLayout->insertWidget(1, view);
 848
 849     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 850             this, SLOT(emitSelectionChangedSignal()));
 851     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 852             this, SLOT(emitContentsMoved()));
 853     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 854             this, SLOT(emitContentsMoved()));
 855     view->setFocus();
 856 }
 857
 858 QAbstractItemView* DolphinView::itemView() const
 859 {
 860     if (m_detailsView != 0) {
 861         return m_detailsView;
 862     } else if (m_columnView != 0) {
 863         return m_columnView;
 864     }
 865
 866     return m_iconsView;
 867 }
 868
 869 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 870 {
 871     return index.isValid() && (index.column() == DolphinModel::Name);
 872 }
 873
 874 bool DolphinView::isCutItem(const KFileItem& item) const
 875 {
 876     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 877     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 878
 879     const KUrl& itemUrl = item.url();
 880     KUrl::List::const_iterator it = cutUrls.begin();
 881     const KUrl::List::const_iterator end = cutUrls.end();
 882     while (it != end) {
 883         if (*it == itemUrl) {
 884             return true;
 885         }
 886         ++it;
 887     }
 888
 889     return false;
 890 }
 891
 892 void DolphinView::applyCutItemEffect()
 893 {
 894     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 895     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 896         return;
 897     }
 898
 899     KFileItemList items(m_dirLister->items());
 900     KFileItemList::const_iterator it = items.begin();
 901     const KFileItemList::const_iterator end = items.end();
 902     while (it != end) {
 903         KFileItem* item = *it;
 904         if (isCutItem(*item)) {
 905             const QModelIndex index = m_dolphinModel->indexForItem(*item);
 906             // Huh? the item is already known
 907             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 908             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 909             if (value.type() == QVariant::Icon) {
 910                 const QIcon icon(qvariant_cast<QIcon>(value));
 911                 QPixmap pixmap = icon.pixmap(128, 128);
 912
 913                 // remember current pixmap for the item to be able
 914                 // to restore it when other items get cut
 915                 CutItem cutItem;
 916                 cutItem.url = item->url();
 917                 cutItem.pixmap = pixmap;
 918                 m_cutItemsCache.append(cutItem);
 919
 920                 // apply icon effect to the cut item
 921                 KIconEffect iconEffect;
 922                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 923                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 924             }
 925         }
 926         ++it;
 927     }
 928 }
 929
 930 void DolphinView::updateViewportColor()
 931 {
 932     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 933     if (m_active) {
 934         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 935         emit selectionChanged(selectedItems());
 936     } else {
 937         color.setAlpha(0);
 938     }
 939
 940     QWidget* viewport = itemView()->viewport();
 941     QPalette palette;
 942     palette.setColor(viewport->backgroundRole(), color);
 943     viewport->setPalette(palette);
 944 }
 945
 946 #include "dolphinview.moc"