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 <kdirmodel.h>
  33 #include <kdirlister.h>
  34 #include <kfileitemdelegate.h>
  35 #include <klocale.h>
  36 #include <kiconeffect.h>
  37 #include <kio/netaccess.h>
  38 #include <kio/renamedialog.h>
  39 #include <kio/previewjob.h>
  40 #include <kmimetyperesolver.h>
  41 #include <konqmimedata.h>
  42 #include <konq_operations.h>
  43 #include <kurl.h>
  44
  45 #include "dolphincolumnview.h"
  46 #include "dolphincontroller.h"
  47 #include "dolphinsortfilterproxymodel.h"
  48 #include "dolphindetailsview.h"
  49 #include "dolphiniconsview.h"
  50 #include "dolphinitemcategorizer.h"
  51 #include "renamedialog.h"
  52 #include "viewproperties.h"
  53 #include "dolphinsettings.h"
  54 #include "dolphin_generalsettings.h"
  55
  56 DolphinView::DolphinView(QWidget* parent,
  57                          const KUrl& url,
  58                          KDirLister* dirLister,
  59                          KDirModel* dirModel,
  60                          DolphinSortFilterProxyModel* proxyModel) :
  61     QWidget(parent),
  62     m_active(true),
  63     m_loadingDirectory(false),
  64     m_initializeColumnView(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_dirModel(dirModel),
  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 QModelIndex&, QWidget*)),
  97             this, SLOT(dropUrls(const KUrl::List&, 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     QColor color = KColorScheme(KColorScheme::View).background();
 138     if (active) {
 139         emit urlChanged(url());
 140         emit selectionChanged(selectedItems());
 141     } else {
 142         color.setAlpha(0);
 143     }
 144
 145     QWidget* viewport = itemView()->viewport();
 146     QPalette palette;
 147     palette.setColor(viewport->backgroundRole(), color);
 148     viewport->setPalette(palette);
 149
 150     update();
 151
 152     if (active) {
 153         emit activated();
 154     }
 155 }
 156
 157 bool DolphinView::isActive() const
 158 {
 159     return m_active;
 160 }
 161
 162 void DolphinView::setMode(Mode mode)
 163 {
 164     if (mode == m_mode) {
 165         return; // the wished mode is already set
 166     }
 167
 168     m_mode = mode;
 169
 170     if (isColumnViewActive()) {
 171         // When changing the mode in the column view, it makes sense
 172         // to go back to the root URL of the column view automatically.
 173         // Otherwise there it would not be possible to turn off the column view
 174         // without focusing the first column.
 175         setUrl(m_dirLister->url());
 176         m_controller->setUrl(m_dirLister->url());
 177     }
 178
 179     ViewProperties props(url());
 180     props.setViewMode(m_mode);
 181
 182     createView();
 183     startDirLister(url());
 184
 185     emit modeChanged();
 186 }
 187
 188 DolphinView::Mode DolphinView::mode() const
 189 {
 190     return m_mode;
 191 }
 192
 193 void DolphinView::setShowPreview(bool show)
 194 {
 195     ViewProperties props(url());
 196     props.setShowPreview(show);
 197
 198     m_controller->setShowPreview(show);
 199     emit showPreviewChanged();
 200
 201     startDirLister(url(), true);
 202 }
 203
 204 bool DolphinView::showPreview() const
 205 {
 206     return m_controller->showPreview();
 207 }
 208
 209 void DolphinView::setShowHiddenFiles(bool show)
 210 {
 211     if (m_dirLister->showingDotFiles() == show) {
 212         return;
 213     }
 214
 215     ViewProperties props(url());
 216     props.setShowHiddenFiles(show);
 217
 218     m_dirLister->setShowingDotFiles(show);
 219     emit showHiddenFilesChanged();
 220
 221     startDirLister(url(), true);
 222 }
 223
 224 bool DolphinView::showHiddenFiles() const
 225 {
 226     return m_dirLister->showingDotFiles();
 227 }
 228
 229 void DolphinView::setCategorizedSorting(bool categorized)
 230 {
 231     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 232         return;
 233     }
 234
 235     Q_ASSERT(m_iconsView != 0);
 236     if (categorized) {
 237         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 238         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 239     } else {
 240         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 241         m_iconsView->setItemCategorizer(0);
 242         delete categorizer;
 243     }
 244
 245     ViewProperties props(url());
 246     props.setCategorizedSorting(categorized);
 247     props.save();
 248
 249     emit categorizedSortingChanged();
 250 }
 251
 252 bool DolphinView::categorizedSorting() const
 253 {
 254     if (!supportsCategorizedSorting()) {
 255         return false;
 256     }
 257
 258     Q_ASSERT(m_iconsView != 0);
 259     return m_iconsView->itemCategorizer() != 0;
 260 }
 261
 262 bool DolphinView::supportsCategorizedSorting() const
 263 {
 264     return m_iconsView != 0;
 265 }
 266
 267 void DolphinView::selectAll()
 268 {
 269     selectAll(QItemSelectionModel::Select);
 270 }
 271
 272 void DolphinView::invertSelection()
 273 {
 274     selectAll(QItemSelectionModel::Toggle);
 275 }
 276
 277 bool DolphinView::hasSelection() const
 278 {
 279     return itemView()->selectionModel()->hasSelection();
 280 }
 281
 282 void DolphinView::clearSelection()
 283 {
 284     itemView()->selectionModel()->clear();
 285 }
 286
 287 KFileItemList DolphinView::selectedItems() const
 288 {
 289     const QAbstractItemView* view = itemView();
 290
 291     // Our view has a selection, we will map them back to the DirModel
 292     // and then fill the KFileItemList.
 293     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 294
 295     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 296     KFileItemList itemList;
 297
 298     const QModelIndexList indexList = selection.indexes();
 299     QModelIndexList::const_iterator end = indexList.end();
 300     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 301         Q_ASSERT((*it).isValid());
 302
 303         KFileItem* item = m_dirModel->itemForIndex(*it);
 304         if (item != 0) {
 305             itemList.append(item);
 306         }
 307     }
 308
 309     return itemList;
 310 }
 311
 312 KUrl::List DolphinView::selectedUrls() const
 313 {
 314     KUrl::List urls;
 315
 316     const KFileItemList list = selectedItems();
 317     KFileItemList::const_iterator it = list.begin();
 318     const KFileItemList::const_iterator end = list.end();
 319     while (it != end) {
 320         KFileItem* item = *it;
 321         urls.append(item->url());
 322         ++it;
 323     }
 324
 325     return urls;
 326 }
 327
 328 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 329 {
 330     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 331     return m_dirModel->itemForIndex(dirModelIndex);
 332 }
 333
 334 void DolphinView::setContentsPosition(int x, int y)
 335 {
 336     QAbstractItemView* view = itemView();
 337     view->horizontalScrollBar()->setValue(x);
 338     view->verticalScrollBar()->setValue(y);
 339
 340     m_loadingDirectory = false;
 341 }
 342
 343 QPoint DolphinView::contentsPosition() const
 344 {
 345     const int x = itemView()->horizontalScrollBar()->value();
 346     const int y = itemView()->verticalScrollBar()->value();
 347     return QPoint(x, y);
 348 }
 349
 350 void DolphinView::zoomIn()
 351 {
 352     m_controller->triggerZoomIn();
 353 }
 354
 355 void DolphinView::zoomOut()
 356 {
 357     m_controller->triggerZoomOut();
 358 }
 359
 360 bool DolphinView::isZoomInPossible() const
 361 {
 362     return m_controller->isZoomInPossible();
 363 }
 364
 365 bool DolphinView::isZoomOutPossible() const
 366 {
 367     return m_controller->isZoomOutPossible();
 368 }
 369
 370 void DolphinView::setSorting(Sorting sorting)
 371 {
 372     if (sorting != this->sorting()) {
 373         updateSorting(sorting);
 374     }
 375 }
 376
 377 DolphinView::Sorting DolphinView::sorting() const
 378 {
 379     return m_proxyModel->sorting();
 380 }
 381
 382 void DolphinView::setSortOrder(Qt::SortOrder order)
 383 {
 384     if (sortOrder() != order) {
 385         updateSortOrder(order);
 386     }
 387 }
 388
 389 Qt::SortOrder DolphinView::sortOrder() const
 390 {
 391     return m_proxyModel->sortOrder();
 392 }
 393
 394 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 395 {
 396     ViewProperties props(url());
 397     props.setAdditionalInfo(info);
 398
 399     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 400     m_fileItemDelegate->setAdditionalInformation(info);
 401
 402     emit additionalInfoChanged(info);
 403     startDirLister(url(), true);
 404 }
 405
 406 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 407 {
 408     return m_fileItemDelegate->additionalInformation();
 409 }
 410
 411 void DolphinView::reload()
 412 {
 413     setUrl(url());
 414     startDirLister(url(), true);
 415 }
 416
 417 void DolphinView::refresh()
 418 {
 419     createView();
 420     applyViewProperties(m_controller->url());
 421     reload();
 422 }
 423
 424 void DolphinView::setUrl(const KUrl& url)
 425 {
 426     if (m_controller->url() == url) {
 427         return;
 428     }
 429
 430     m_controller->setUrl(url);
 431
 432     applyViewProperties(url);
 433
 434     startDirLister(url);
 435     emit urlChanged(url);
 436 }
 437
 438 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 439 {
 440     QWidget::mouseReleaseEvent(event);
 441     setActive(true);;
 442 }
 443 void DolphinView::activate()
 444 {
 445     setActive(true);
 446 }
 447
 448 void DolphinView::triggerItem(const QModelIndex& index)
 449 {
 450     if (!isValidNameIndex(index)) {
 451         clearSelection();
 452         showHoverInformation(index);
 453         return;
 454     }
 455
 456     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 457     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 458         // items are selected by the user, hence don't trigger the
 459         // item specified by 'index'
 460         return;
 461     }
 462
 463     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 464     if (item == 0) {
 465         return;
 466     }
 467
 468     // Prefer the local path over the URL. This assures that the
 469     // volume space information is correct. Assuming that the URL is media:/sda1,
 470     // and the local path is /windows/C: For the URL the space info is related
 471     // to the root partition (and hence wrong) and for the local path the space
 472     // info is related to the windows partition (-> correct).
 473     const QString localPath(item->localPath());
 474     KUrl url;
 475     if (localPath.isEmpty()) {
 476         url = item->url();
 477     } else {
 478         url = localPath;
 479     }
 480
 481     if (item->isDir()) {
 482         setUrl(url);
 483     } else if (item->isFile()) {
 484         // allow to browse through ZIP and tar files
 485         KMimeType::Ptr mime = item->mimeTypePtr();
 486         if (mime->is("application/zip")) {
 487             url.setProtocol("zip");
 488             setUrl(url);
 489         } else if (mime->is("application/x-tar") ||
 490                    mime->is("application/x-tarz") ||
 491                    mime->is("application/x-bzip-compressed-tar") ||
 492                    mime->is("application/x-compressed-tar") ||
 493                    mime->is("application/x-tzo")) {
 494             url.setProtocol("tar");
 495             setUrl(url);
 496         } else {
 497             item->run();
 498         }
 499     } else {
 500         item->run();
 501     }
 502 }
 503
 504 void DolphinView::generatePreviews(const KFileItemList& items)
 505 {
 506     if (m_controller->showPreview()) {
 507
 508         // Must turn QList<KFileItem *> to QList<KFileItem>...
 509         QList<KFileItem> itemsToPreview;
 510         foreach( KFileItem* it, items )
 511             itemsToPreview.append( *it );
 512
 513         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 514         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 515                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 516     }
 517 }
 518
 519 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 520 {
 521     Q_ASSERT(!item.isNull());
 522     if (item.url().directory() != m_dirLister->url().path()) {
 523         // the preview job is still working on items of an older URL, hence
 524         // the item is not part of the directory model anymore
 525         return;
 526     }
 527
 528     const QModelIndex idx = m_dirModel->indexForItem(item);
 529     if (idx.isValid() && (idx.column() == 0)) {
 530         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 531         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 532             KIconEffect iconEffect;
 533             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 534             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 535         } else {
 536             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 537         }
 538     }
 539 }
 540
 541 void DolphinView::emitSelectionChangedSignal()
 542 {
 543     emit selectionChanged(DolphinView::selectedItems());
 544 }
 545
 546 void DolphinView::startDirLister(const KUrl& url, bool reload)
 547 {
 548     if (!url.isValid()) {
 549         const QString location(url.pathOrUrl());
 550         if (location.isEmpty()) {
 551             emit errorMessage(i18n("The location is empty."));
 552         } else {
 553             emit errorMessage(i18n("The location '%1' is invalid.", location));
 554         }
 555         return;
 556     }
 557
 558     m_cutItemsCache.clear();
 559     m_loadingDirectory = true;
 560
 561     m_dirLister->stop();
 562
 563     bool openDir = true;
 564     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 565     m_initializeColumnView = false;
 566
 567     if (keepOldDirs) {
 568         if (reload) {
 569             keepOldDirs = false;
 570
 571             const KUrl& dirListerUrl = m_dirLister->url();
 572             if (dirListerUrl.isValid()) {
 573                 const KUrl::List dirs = m_dirLister->directories();
 574                 KUrl url;
 575                 foreach(url, dirs) {
 576                     m_dirLister->updateDirectory(url);
 577                 }
 578                 openDir = false;
 579             }
 580         } else if (m_dirLister->directories().contains(url)) {
 581             // The dir lister contains the directory already, so
 582             // KDirLister::openUrl() may not been invoked twice.
 583             m_dirLister->updateDirectory(url);
 584             openDir = false;
 585         } else {
 586             const KUrl& dirListerUrl = m_dirLister->url();
 587             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 588                 // The current URL is not a child of the dir lister
 589                 // URL. This may happen when e. g. a bookmark has been selected
 590                 // and hence the view must be reset.
 591                 keepOldDirs = false;
 592             }
 593         }
 594     }
 595
 596     if (openDir) {
 597         m_dirLister->openUrl(url, keepOldDirs, reload);
 598     }
 599 }
 600
 601 void DolphinView::applyViewProperties(const KUrl& url)
 602 {
 603     const ViewProperties props(url);
 604
 605     const Mode mode = props.viewMode();
 606     bool changeMode = (m_mode != mode);
 607     if (changeMode && isColumnViewActive()) {
 608         // The column view is active. Only change the
 609         // mode if the current URL is no child of the column view.
 610         if (m_dirLister->url().isParentOf(url)) {
 611             changeMode = false;
 612         }
 613     }
 614
 615     if (changeMode) {
 616         m_mode = mode;
 617         createView();
 618         emit modeChanged();
 619
 620         if (m_mode == ColumnView) {
 621             // The mode has been changed to the Column View. When starting the dir
 622             // lister with DolphinView::startDirLister() it is important to give a
 623             // hint that the dir lister may not keep the current directory
 624             // although this is the default for showing a hierarchy.
 625             m_initializeColumnView = true;
 626         }
 627     }
 628     if (itemView() == 0) {
 629         createView();
 630     }
 631     Q_ASSERT(itemView() != 0);
 632     Q_ASSERT(m_fileItemDelegate != 0);
 633
 634     const bool showHiddenFiles = props.showHiddenFiles();
 635     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 636         m_dirLister->setShowingDotFiles(showHiddenFiles);
 637         emit showHiddenFilesChanged();
 638     }
 639
 640     const bool categorized = props.categorizedSorting();
 641     if (categorized != categorizedSorting()) {
 642         if (supportsCategorizedSorting()) {
 643             Q_ASSERT(m_iconsView != 0);
 644             if (categorized) {
 645                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 646                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 647             } else {
 648                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 649                 m_iconsView->setItemCategorizer(0);
 650                 delete categorizer;
 651             }
 652         }
 653         emit categorizedSortingChanged();
 654     }
 655
 656     const DolphinView::Sorting sorting = props.sorting();
 657     if (sorting != m_proxyModel->sorting()) {
 658         m_proxyModel->setSorting(sorting);
 659         emit sortingChanged(sorting);
 660     }
 661
 662     const Qt::SortOrder sortOrder = props.sortOrder();
 663     if (sortOrder != m_proxyModel->sortOrder()) {
 664         m_proxyModel->setSortOrder(sortOrder);
 665         emit sortOrderChanged(sortOrder);
 666     }
 667
 668     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 669     if (info != m_fileItemDelegate->additionalInformation()) {
 670         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 671         m_fileItemDelegate->setAdditionalInformation(info);
 672         emit additionalInfoChanged(info);
 673     }
 674
 675     const bool showPreview = props.showPreview();
 676     if (showPreview != m_controller->showPreview()) {
 677         m_controller->setShowPreview(showPreview);
 678         emit showPreviewChanged();
 679     }
 680 }
 681
 682 void DolphinView::changeSelection(const KFileItemList& selection)
 683 {
 684     clearSelection();
 685     if (selection.isEmpty()) {
 686         return;
 687     }
 688     const KUrl& baseUrl = url();
 689     KUrl url;
 690     QItemSelection new_selection;
 691     foreach(KFileItem* item, selection) {
 692         url = item->url().upUrl();
 693         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 694             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
 695             new_selection.select(index, index);
 696         }
 697     }
 698     itemView()->selectionModel()->select(new_selection,
 699                                          QItemSelectionModel::ClearAndSelect
 700                                          | QItemSelectionModel::Current);
 701 }
 702
 703 void DolphinView::openContextMenu(const QPoint& pos)
 704 {
 705     KFileItem* item = 0;
 706
 707     const QModelIndex index = itemView()->indexAt(pos);
 708     if (isValidNameIndex(index)) {
 709         item = fileItem(index);
 710     }
 711
 712     emit requestContextMenu(item, url());
 713 }
 714
 715 void DolphinView::dropUrls(const KUrl::List& urls,
 716                            const QModelIndex& index,
 717                            QWidget* source)
 718 {
 719     KFileItem* directory = 0;
 720     if (isValidNameIndex(index)) {
 721         KFileItem* item = fileItem(index);
 722         Q_ASSERT(item != 0);
 723         if (item->isDir()) {
 724             // the URLs are dropped above a directory
 725             directory = item;
 726         }
 727     }
 728
 729     if ((directory == 0) && (source == itemView())) {
 730         // The dropping is done into the same viewport where
 731         // the dragging has been started. Just ignore this...
 732         return;
 733     }
 734
 735     const KUrl& destination = (directory == 0) ?
 736                               url() : directory->url();
 737     dropUrls(urls, destination);
 738 }
 739
 740 void DolphinView::dropUrls(const KUrl::List& urls,
 741                            const KUrl& destination)
 742 {
 743     emit urlsDropped(urls, destination);
 744 }
 745
 746 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 747 {
 748     ViewProperties props(url());
 749     props.setSorting(sorting);
 750
 751     m_proxyModel->setSorting(sorting);
 752
 753     emit sortingChanged(sorting);
 754 }
 755
 756 void DolphinView::updateSortOrder(Qt::SortOrder order)
 757 {
 758     ViewProperties props(url());
 759     props.setSortOrder(order);
 760
 761     m_proxyModel->setSortOrder(order);
 762
 763     emit sortOrderChanged(order);
 764 }
 765
 766 void DolphinView::emitContentsMoved()
 767 {
 768     // only emit the contents moved signal if:
 769     // - no directory loading is ongoing (this would reset the contents position
 770     //   always to (0, 0))
 771     // - if the Column View is active: the column view does an automatic
 772     //   positioning during the loading operation, which must be remembered
 773     if (!m_loadingDirectory || isColumnViewActive()) {
 774         const QPoint pos(contentsPosition());
 775         emit contentsMoved(pos.x(), pos.y());
 776     }
 777 }
 778
 779 void DolphinView::updateCutItems()
 780 {
 781     // restore the icons of all previously selected items to the
 782     // original state...
 783     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 784     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 785     while (it != end) {
 786         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 787         if (index.isValid()) {
 788             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 789         }
 790         ++it;
 791     }
 792     m_cutItemsCache.clear();
 793
 794     // ... and apply an item effect to all currently cut items
 795     applyCutItemEffect();
 796 }
 797
 798 void DolphinView::showHoverInformation(const QModelIndex& index)
 799 {
 800     if (hasSelection()) {
 801         return;
 802     }
 803
 804     const KFileItem* item = fileItem(index);
 805     if (item != 0) {
 806         emit requestItemInfo(*item);
 807     }
 808 }
 809
 810 void DolphinView::clearHoverInformation()
 811 {
 812     emit requestItemInfo(KFileItem());
 813 }
 814
 815
 816 void DolphinView::createView()
 817 {
 818     // delete current view
 819     QAbstractItemView* view = itemView();
 820     if (view != 0) {
 821         m_topLayout->removeWidget(view);
 822         view->close();
 823         if (view == m_iconsView) {
 824             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 825             m_iconsView->setItemCategorizer(0);
 826             delete categorizer;
 827         }
 828         view->deleteLater();
 829         view = 0;
 830         m_iconsView = 0;
 831         m_detailsView = 0;
 832         m_columnView = 0;
 833         m_fileItemDelegate = 0;
 834     }
 835
 836     Q_ASSERT(m_iconsView == 0);
 837     Q_ASSERT(m_detailsView == 0);
 838     Q_ASSERT(m_columnView == 0);
 839
 840     // ... and recreate it representing the current mode
 841     switch (m_mode) {
 842     case IconsView:
 843         m_iconsView = new DolphinIconsView(this, m_controller);
 844         view = m_iconsView;
 845         break;
 846
 847     case DetailsView:
 848         m_detailsView = new DolphinDetailsView(this, m_controller);
 849         view = m_detailsView;
 850         break;
 851
 852     case ColumnView:
 853         m_columnView = new DolphinColumnView(this, m_controller);
 854         view = m_columnView;
 855         break;
 856     }
 857
 858     Q_ASSERT(view != 0);
 859
 860     m_fileItemDelegate = new KFileItemDelegate(view);
 861     view->setItemDelegate(m_fileItemDelegate);
 862
 863     view->setModel(m_proxyModel);
 864     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 865
 866     new KMimeTypeResolver(view, m_dirModel);
 867     m_topLayout->insertWidget(1, view);
 868
 869     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 870             this, SLOT(emitSelectionChangedSignal()));
 871     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 872             this, SLOT(emitContentsMoved()));
 873     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 874             this, SLOT(emitContentsMoved()));
 875 }
 876
 877 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
 878 {
 879     QItemSelectionModel* selectionModel = itemView()->selectionModel();
 880     const QAbstractItemModel* itemModel = selectionModel->model();
 881
 882     const QModelIndex topLeft = itemModel->index(0, 0);
 883     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 884                                     itemModel->columnCount() - 1);
 885
 886     QItemSelection selection(topLeft, bottomRight);
 887     selectionModel->select(selection, flags);
 888 }
 889
 890 QAbstractItemView* DolphinView::itemView() const
 891 {
 892     if (m_detailsView != 0) {
 893         return m_detailsView;
 894     } else if (m_columnView != 0) {
 895         return m_columnView;
 896     }
 897
 898     return m_iconsView;
 899 }
 900
 901 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 902 {
 903     return index.isValid() && (index.column() == KDirModel::Name);
 904 }
 905
 906 bool DolphinView::isCutItem(const KFileItem& item) const
 907 {
 908     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 909     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 910
 911     const KUrl& itemUrl = item.url();
 912     KUrl::List::const_iterator it = cutUrls.begin();
 913     const KUrl::List::const_iterator end = cutUrls.end();
 914     while (it != end) {
 915         if (*it == itemUrl) {
 916             return true;
 917         }
 918         ++it;
 919     }
 920
 921     return false;
 922 }
 923
 924 void DolphinView::applyCutItemEffect()
 925 {
 926     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 927     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 928         return;
 929     }
 930
 931     KFileItemList items(m_dirLister->items());
 932     KFileItemList::const_iterator it = items.begin();
 933     const KFileItemList::const_iterator end = items.end();
 934     while (it != end) {
 935         KFileItem* item = *it;
 936         if (isCutItem(*item)) {
 937             const QModelIndex index = m_dirModel->indexForItem(*item);
 938             const KFileItem* item = m_dirModel->itemForIndex(index);
 939             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 940             if ((value.type() == QVariant::Icon) && (item != 0)) {
 941                 const QIcon icon(qvariant_cast<QIcon>(value));
 942                 QPixmap pixmap = icon.pixmap(128, 128);
 943
 944                 // remember current pixmap for the item to be able
 945                 // to restore it when other items get cut
 946                 CutItem cutItem;
 947                 cutItem.url = item->url();
 948                 cutItem.pixmap = pixmap;
 949                 m_cutItemsCache.append(cutItem);
 950
 951                 // apply icon effect to the cut item
 952                 KIconEffect iconEffect;
 953                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 954                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 955             }
 956         }
 957         ++it;
 958     }
 959 }
 960
 961 #include "dolphinview.moc"