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(requestContextMenu(const QPoint&)),
  93             this, SLOT(openContextMenu(const QPoint&)));
  94     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&, QWidget*)),
  95             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&, QWidget*)));
  96     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
  97             this, SLOT(updateSorting(DolphinView::Sorting)));
  98     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  99             this, SLOT(updateSortOrder(Qt::SortOrder)));
 100     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 101             this, SLOT(triggerItem(const QModelIndex&)));
 102     connect(m_controller, SIGNAL(activated()),
 103             this, SLOT(activate()));
 104     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 105             this, SLOT(showHoverInformation(const QModelIndex&)));
 106     connect(m_controller, SIGNAL(viewportEntered()),
 107             this, SLOT(clearHoverInformation()));
 108
 109     applyViewProperties(url);
 110     m_topLayout->addWidget(itemView());
 111 }
 112
 113 DolphinView::~DolphinView()
 114 {
 115 }
 116
 117 const KUrl& DolphinView::url() const
 118 {
 119     return m_controller->url();
 120 }
 121
 122 KUrl DolphinView::rootUrl() const
 123 {
 124     return isColumnViewActive() ? m_dirLister->url() : url();
 125 }
 126
 127 void DolphinView::setActive(bool active)
 128 {
 129     if (active == m_active) {
 130         return;
 131     }
 132
 133     m_active = active;
 134
 135     QColor color = KColorScheme(KColorScheme::View).background();
 136     if (active) {
 137         emit urlChanged(url());
 138         emit selectionChanged(selectedItems());
 139     } else {
 140         color.setAlpha(0);
 141     }
 142
 143     QWidget* viewport = itemView()->viewport();
 144     QPalette palette;
 145     palette.setColor(viewport->backgroundRole(), color);
 146     viewport->setPalette(palette);
 147
 148     update();
 149
 150     if (active) {
 151         emit activated();
 152     }
 153 }
 154
 155 bool DolphinView::isActive() const
 156 {
 157     return m_active;
 158 }
 159
 160 void DolphinView::setMode(Mode mode)
 161 {
 162     if (mode == m_mode) {
 163         return; // the wished mode is already set
 164     }
 165
 166     m_mode = mode;
 167
 168     if (isColumnViewActive()) {
 169         // When changing the mode in the column view, it makes sense
 170         // to go back to the root URL of the column view automatically.
 171         // Otherwise there it would not be possible to turn off the column view
 172         // without focusing the first column.
 173         setUrl(m_dirLister->url());
 174         m_controller->setUrl(m_dirLister->url());
 175     }
 176
 177     ViewProperties props(url());
 178     props.setViewMode(m_mode);
 179
 180     createView();
 181     startDirLister(url());
 182
 183     emit modeChanged();
 184 }
 185
 186 DolphinView::Mode DolphinView::mode() const
 187 {
 188     return m_mode;
 189 }
 190
 191 void DolphinView::setShowPreview(bool show)
 192 {
 193     ViewProperties props(url());
 194     props.setShowPreview(show);
 195
 196     m_controller->setShowPreview(show);
 197     emit showPreviewChanged();
 198
 199     startDirLister(url(), true);
 200 }
 201
 202 bool DolphinView::showPreview() const
 203 {
 204     return m_controller->showPreview();
 205 }
 206
 207 void DolphinView::setShowHiddenFiles(bool show)
 208 {
 209     if (m_dirLister->showingDotFiles() == show) {
 210         return;
 211     }
 212
 213     ViewProperties props(url());
 214     props.setShowHiddenFiles(show);
 215
 216     m_dirLister->setShowingDotFiles(show);
 217     emit showHiddenFilesChanged();
 218
 219     startDirLister(url(), true);
 220 }
 221
 222 bool DolphinView::showHiddenFiles() const
 223 {
 224     return m_dirLister->showingDotFiles();
 225 }
 226
 227 void DolphinView::setCategorizedSorting(bool categorized)
 228 {
 229     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 230         return;
 231     }
 232
 233     Q_ASSERT(m_iconsView != 0);
 234     if (categorized) {
 235         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 236         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 237     } else {
 238         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 239         m_iconsView->setItemCategorizer(0);
 240         delete categorizer;
 241     }
 242
 243     ViewProperties props(url());
 244     props.setCategorizedSorting(categorized);
 245     props.save();
 246
 247     emit categorizedSortingChanged();
 248 }
 249
 250 bool DolphinView::categorizedSorting() const
 251 {
 252     if (!supportsCategorizedSorting()) {
 253         return false;
 254     }
 255
 256     Q_ASSERT(m_iconsView != 0);
 257     return m_iconsView->itemCategorizer() != 0;
 258 }
 259
 260 bool DolphinView::supportsCategorizedSorting() const
 261 {
 262     return m_iconsView != 0;
 263 }
 264
 265 void DolphinView::selectAll()
 266 {
 267     selectAll(QItemSelectionModel::Select);
 268 }
 269
 270 void DolphinView::invertSelection()
 271 {
 272     selectAll(QItemSelectionModel::Toggle);
 273 }
 274
 275 bool DolphinView::hasSelection() const
 276 {
 277     return itemView()->selectionModel()->hasSelection();
 278 }
 279
 280 void DolphinView::clearSelection()
 281 {
 282     itemView()->selectionModel()->clear();
 283 }
 284
 285 KFileItemList DolphinView::selectedItems() const
 286 {
 287     const QAbstractItemView* view = itemView();
 288
 289     // Our view has a selection, we will map them back to the DirModel
 290     // and then fill the KFileItemList.
 291     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 292
 293     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 294     KFileItemList itemList;
 295
 296     const QModelIndexList indexList = selection.indexes();
 297     QModelIndexList::const_iterator end = indexList.end();
 298     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 299         Q_ASSERT((*it).isValid());
 300
 301         KFileItem* item = m_dirModel->itemForIndex(*it);
 302         if (item != 0) {
 303             itemList.append(item);
 304         }
 305     }
 306
 307     return itemList;
 308 }
 309
 310 KUrl::List DolphinView::selectedUrls() const
 311 {
 312     KUrl::List urls;
 313
 314     const KFileItemList list = selectedItems();
 315     KFileItemList::const_iterator it = list.begin();
 316     const KFileItemList::const_iterator end = list.end();
 317     while (it != end) {
 318         KFileItem* item = *it;
 319         urls.append(item->url());
 320         ++it;
 321     }
 322
 323     return urls;
 324 }
 325
 326 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 327 {
 328     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 329     return m_dirModel->itemForIndex(dirModelIndex);
 330 }
 331
 332 void DolphinView::setContentsPosition(int x, int y)
 333 {
 334     QAbstractItemView* view = itemView();
 335     view->horizontalScrollBar()->setValue(x);
 336     view->verticalScrollBar()->setValue(y);
 337
 338     m_loadingDirectory = false;
 339 }
 340
 341 QPoint DolphinView::contentsPosition() const
 342 {
 343     const int x = itemView()->horizontalScrollBar()->value();
 344     const int y = itemView()->verticalScrollBar()->value();
 345     return QPoint(x, y);
 346 }
 347
 348 void DolphinView::zoomIn()
 349 {
 350     m_controller->triggerZoomIn();
 351 }
 352
 353 void DolphinView::zoomOut()
 354 {
 355     m_controller->triggerZoomOut();
 356 }
 357
 358 bool DolphinView::isZoomInPossible() const
 359 {
 360     return m_controller->isZoomInPossible();
 361 }
 362
 363 bool DolphinView::isZoomOutPossible() const
 364 {
 365     return m_controller->isZoomOutPossible();
 366 }
 367
 368 void DolphinView::setSorting(Sorting sorting)
 369 {
 370     if (sorting != this->sorting()) {
 371         updateSorting(sorting);
 372     }
 373 }
 374
 375 DolphinView::Sorting DolphinView::sorting() const
 376 {
 377     return m_proxyModel->sorting();
 378 }
 379
 380 void DolphinView::setSortOrder(Qt::SortOrder order)
 381 {
 382     if (sortOrder() != order) {
 383         updateSortOrder(order);
 384     }
 385 }
 386
 387 Qt::SortOrder DolphinView::sortOrder() const
 388 {
 389     return m_proxyModel->sortOrder();
 390 }
 391
 392 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 393 {
 394     ViewProperties props(url());
 395     props.setAdditionalInfo(info);
 396
 397     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 398     m_fileItemDelegate->setAdditionalInformation(info);
 399
 400     emit additionalInfoChanged(info);
 401     startDirLister(url(), true);
 402 }
 403
 404 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 405 {
 406     return m_fileItemDelegate->additionalInformation();
 407 }
 408
 409 void DolphinView::reload()
 410 {
 411     setUrl(url());
 412     startDirLister(url(), true);
 413 }
 414
 415 void DolphinView::refresh()
 416 {
 417     createView();
 418     applyViewProperties(m_controller->url());
 419     reload();
 420 }
 421
 422 void DolphinView::setUrl(const KUrl& url)
 423 {
 424     if (m_controller->url() == url) {
 425         return;
 426     }
 427
 428     m_controller->setUrl(url);
 429
 430     applyViewProperties(url);
 431
 432     startDirLister(url);
 433     emit urlChanged(url);
 434 }
 435
 436 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 437 {
 438     QWidget::mouseReleaseEvent(event);
 439     setActive(true);;
 440 }
 441 void DolphinView::activate()
 442 {
 443     setActive(true);
 444 }
 445
 446 void DolphinView::triggerItem(const QModelIndex& index)
 447 {
 448     if (!isValidNameIndex(index)) {
 449         clearSelection();
 450         showHoverInformation(index);
 451         return;
 452     }
 453
 454     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 455     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 456         // items are selected by the user, hence don't trigger the
 457         // item specified by 'index'
 458         return;
 459     }
 460
 461     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 462     if (item == 0) {
 463         return;
 464     }
 465
 466     // Prefer the local path over the URL. This assures that the
 467     // volume space information is correct. Assuming that the URL is media:/sda1,
 468     // and the local path is /windows/C: For the URL the space info is related
 469     // to the root partition (and hence wrong) and for the local path the space
 470     // info is related to the windows partition (-> correct).
 471     const QString localPath(item->localPath());
 472     KUrl url;
 473     if (localPath.isEmpty()) {
 474         url = item->url();
 475     } else {
 476         url = localPath;
 477     }
 478
 479     if (item->isDir()) {
 480         setUrl(url);
 481     } else if (item->isFile()) {
 482         // allow to browse through ZIP and tar files
 483         KMimeType::Ptr mime = item->mimeTypePtr();
 484         if (mime->is("application/zip")) {
 485             url.setProtocol("zip");
 486             setUrl(url);
 487         } else if (mime->is("application/x-tar") ||
 488                    mime->is("application/x-tarz") ||
 489                    mime->is("application/x-bzip-compressed-tar") ||
 490                    mime->is("application/x-compressed-tar") ||
 491                    mime->is("application/x-tzo")) {
 492             url.setProtocol("tar");
 493             setUrl(url);
 494         } else {
 495             item->run();
 496         }
 497     } else {
 498         item->run();
 499     }
 500 }
 501
 502 void DolphinView::generatePreviews(const KFileItemList& items)
 503 {
 504     if (m_controller->showPreview()) {
 505
 506         // Must turn QList<KFileItem *> to QList<KFileItem>...
 507         QList<KFileItem> itemsToPreview;
 508         foreach( KFileItem* it, items )
 509             itemsToPreview.append( *it );
 510
 511         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 512         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 513                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 514     }
 515 }
 516
 517 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 518 {
 519     Q_ASSERT(!item.isNull());
 520     if (item.url().directory() != m_dirLister->url().path()) {
 521         // the preview job is still working on items of an older URL, hence
 522         // the item is not part of the directory model anymore
 523         return;
 524     }
 525
 526     const QModelIndex idx = m_dirModel->indexForItem(item);
 527     if (idx.isValid() && (idx.column() == 0)) {
 528         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 529         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 530             KIconEffect iconEffect;
 531             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 532             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 533         } else {
 534             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 535         }
 536     }
 537 }
 538
 539 void DolphinView::emitSelectionChangedSignal()
 540 {
 541     emit selectionChanged(DolphinView::selectedItems());
 542 }
 543
 544 void DolphinView::startDirLister(const KUrl& url, bool reload)
 545 {
 546     if (!url.isValid()) {
 547         const QString location(url.pathOrUrl());
 548         if (location.isEmpty()) {
 549             emit errorMessage(i18n("The location is empty."));
 550         } else {
 551             emit errorMessage(i18n("The location '%1' is invalid.", location));
 552         }
 553         return;
 554     }
 555
 556     m_cutItemsCache.clear();
 557     m_loadingDirectory = true;
 558
 559     m_dirLister->stop();
 560
 561     bool openDir = true;
 562     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 563     m_initializeColumnView = false;
 564
 565     if (keepOldDirs) {
 566         if (reload) {
 567             keepOldDirs = false;
 568
 569             const KUrl& dirListerUrl = m_dirLister->url();
 570             if (dirListerUrl.isValid()) {
 571                 const KUrl::List dirs = m_dirLister->directories();
 572                 KUrl url;
 573                 foreach(url, dirs) {
 574                     m_dirLister->updateDirectory(url);
 575                 }
 576                 openDir = false;
 577             }
 578         } else if (m_dirLister->directories().contains(url)) {
 579             // The dir lister contains the directory already, so
 580             // KDirLister::openUrl() may not been invoked twice.
 581             m_dirLister->updateDirectory(url);
 582             openDir = false;
 583         } else {
 584             const KUrl& dirListerUrl = m_dirLister->url();
 585             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 586                 // The current URL is not a child of the dir lister
 587                 // URL. This may happen when e. g. a bookmark has been selected
 588                 // and hence the view must be reset.
 589                 keepOldDirs = false;
 590             }
 591         }
 592     }
 593
 594     if (openDir) {
 595         m_dirLister->openUrl(url, keepOldDirs, reload);
 596     }
 597 }
 598
 599 void DolphinView::applyViewProperties(const KUrl& url)
 600 {
 601     const ViewProperties props(url);
 602
 603     const Mode mode = props.viewMode();
 604     bool changeMode = (m_mode != mode);
 605     if (changeMode && isColumnViewActive()) {
 606         // The column view is active. Only change the
 607         // mode if the current URL is no child of the column view.
 608         if (m_dirLister->url().isParentOf(url)) {
 609             changeMode = false;
 610         }
 611     }
 612
 613     if (changeMode) {
 614         m_mode = mode;
 615         createView();
 616         emit modeChanged();
 617
 618         if (m_mode == ColumnView) {
 619             // The mode has been changed to the Column View. When starting the dir
 620             // lister with DolphinView::startDirLister() it is important to give a
 621             // hint that the dir lister may not keep the current directory
 622             // although this is the default for showing a hierarchy.
 623             m_initializeColumnView = true;
 624         }
 625     }
 626     if (itemView() == 0) {
 627         createView();
 628     }
 629     Q_ASSERT(itemView() != 0);
 630     Q_ASSERT(m_fileItemDelegate != 0);
 631
 632     const bool showHiddenFiles = props.showHiddenFiles();
 633     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 634         m_dirLister->setShowingDotFiles(showHiddenFiles);
 635         emit showHiddenFilesChanged();
 636     }
 637
 638     const bool categorized = props.categorizedSorting();
 639     if (categorized != categorizedSorting()) {
 640         if (supportsCategorizedSorting()) {
 641             Q_ASSERT(m_iconsView != 0);
 642             if (categorized) {
 643                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 644                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 645             } else {
 646                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 647                 m_iconsView->setItemCategorizer(0);
 648                 delete categorizer;
 649             }
 650         }
 651         emit categorizedSortingChanged();
 652     }
 653
 654     const DolphinView::Sorting sorting = props.sorting();
 655     if (sorting != m_proxyModel->sorting()) {
 656         m_proxyModel->setSorting(sorting);
 657         emit sortingChanged(sorting);
 658     }
 659
 660     const Qt::SortOrder sortOrder = props.sortOrder();
 661     if (sortOrder != m_proxyModel->sortOrder()) {
 662         m_proxyModel->setSortOrder(sortOrder);
 663         emit sortOrderChanged(sortOrder);
 664     }
 665
 666     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 667     if (info != m_fileItemDelegate->additionalInformation()) {
 668         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 669         m_fileItemDelegate->setAdditionalInformation(info);
 670         emit additionalInfoChanged(info);
 671     }
 672
 673     const bool showPreview = props.showPreview();
 674     if (showPreview != m_controller->showPreview()) {
 675         m_controller->setShowPreview(showPreview);
 676         emit showPreviewChanged();
 677     }
 678 }
 679
 680 void DolphinView::changeSelection(const KFileItemList& selection)
 681 {
 682     clearSelection();
 683     if (selection.isEmpty()) {
 684         return;
 685     }
 686     const KUrl& baseUrl = url();
 687     KUrl url;
 688     QItemSelection new_selection;
 689     foreach(KFileItem* item, selection) {
 690         url = item->url().upUrl();
 691         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 692             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
 693             new_selection.select(index, index);
 694         }
 695     }
 696     itemView()->selectionModel()->select(new_selection,
 697                                          QItemSelectionModel::ClearAndSelect
 698                                          | QItemSelectionModel::Current);
 699 }
 700
 701 void DolphinView::openContextMenu(const QPoint& pos)
 702 {
 703     KFileItem* item = 0;
 704
 705     const QModelIndex index = itemView()->indexAt(pos);
 706     if (isValidNameIndex(index)) {
 707         item = fileItem(index);
 708     }
 709
 710     emit requestContextMenu(item, url());
 711 }
 712
 713 void DolphinView::dropUrls(const KUrl::List& urls,
 714                            const QModelIndex& index,
 715                            QWidget* source)
 716 {
 717     KFileItem* directory = 0;
 718     if (isValidNameIndex(index)) {
 719         KFileItem* item = fileItem(index);
 720         Q_ASSERT(item != 0);
 721         if (item->isDir()) {
 722             // the URLs are dropped above a directory
 723             directory = item;
 724         }
 725     }
 726
 727     if ((directory == 0) && (source == itemView())) {
 728         // The dropping is done into the same viewport where
 729         // the dragging has been started. Just ignore this...
 730         return;
 731     }
 732
 733     const KUrl& destination = (directory == 0) ?
 734                               url() : directory->url();
 735     dropUrls(urls, destination);
 736 }
 737
 738 void DolphinView::dropUrls(const KUrl::List& urls,
 739                            const KUrl& destination)
 740 {
 741     emit urlsDropped(urls, destination);
 742 }
 743
 744 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 745 {
 746     ViewProperties props(url());
 747     props.setSorting(sorting);
 748
 749     m_proxyModel->setSorting(sorting);
 750
 751     emit sortingChanged(sorting);
 752 }
 753
 754 void DolphinView::updateSortOrder(Qt::SortOrder order)
 755 {
 756     ViewProperties props(url());
 757     props.setSortOrder(order);
 758
 759     m_proxyModel->setSortOrder(order);
 760
 761     emit sortOrderChanged(order);
 762 }
 763
 764 void DolphinView::emitContentsMoved()
 765 {
 766     // only emit the contents moved signal if:
 767     // - no directory loading is ongoing (this would reset the contents position
 768     //   always to (0, 0))
 769     // - if the Column View is active: the column view does an automatic
 770     //   positioning during the loading operation, which must be remembered
 771     if (!m_loadingDirectory || isColumnViewActive()) {
 772         const QPoint pos(contentsPosition());
 773         emit contentsMoved(pos.x(), pos.y());
 774     }
 775 }
 776
 777 void DolphinView::updateCutItems()
 778 {
 779     // restore the icons of all previously selected items to the
 780     // original state...
 781     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 782     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 783     while (it != end) {
 784         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 785         if (index.isValid()) {
 786             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 787         }
 788         ++it;
 789     }
 790     m_cutItemsCache.clear();
 791
 792     // ... and apply an item effect to all currently cut items
 793     applyCutItemEffect();
 794 }
 795
 796 void DolphinView::showHoverInformation(const QModelIndex& index)
 797 {
 798     if (hasSelection()) {
 799         return;
 800     }
 801
 802     const KFileItem* item = fileItem(index);
 803     if (item != 0) {
 804         emit requestItemInfo(item->url());
 805     }
 806 }
 807
 808 void DolphinView::clearHoverInformation()
 809 {
 810     emit requestItemInfo(KUrl());
 811 }
 812
 813
 814 void DolphinView::createView()
 815 {
 816     // delete current view
 817     QAbstractItemView* view = itemView();
 818     if (view != 0) {
 819         m_topLayout->removeWidget(view);
 820         view->close();
 821         if (view == m_iconsView) {
 822             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 823             m_iconsView->setItemCategorizer(0);
 824             delete categorizer;
 825         }
 826         view->deleteLater();
 827         view = 0;
 828         m_iconsView = 0;
 829         m_detailsView = 0;
 830         m_columnView = 0;
 831         m_fileItemDelegate = 0;
 832     }
 833
 834     Q_ASSERT(m_iconsView == 0);
 835     Q_ASSERT(m_detailsView == 0);
 836     Q_ASSERT(m_columnView == 0);
 837
 838     // ... and recreate it representing the current mode
 839     switch (m_mode) {
 840     case IconsView:
 841         m_iconsView = new DolphinIconsView(this, m_controller);
 842         view = m_iconsView;
 843         break;
 844
 845     case DetailsView:
 846         m_detailsView = new DolphinDetailsView(this, m_controller);
 847         view = m_detailsView;
 848         break;
 849
 850     case ColumnView:
 851         m_columnView = new DolphinColumnView(this, m_controller);
 852         view = m_columnView;
 853         break;
 854     }
 855
 856     Q_ASSERT(view != 0);
 857
 858     m_fileItemDelegate = new KFileItemDelegate(view);
 859     view->setItemDelegate(m_fileItemDelegate);
 860
 861     view->setModel(m_proxyModel);
 862     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 863
 864     new KMimeTypeResolver(view, m_dirModel);
 865     m_topLayout->insertWidget(1, view);
 866
 867     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 868             this, SLOT(emitSelectionChangedSignal()));
 869     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 870             this, SLOT(emitContentsMoved()));
 871     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 872             this, SLOT(emitContentsMoved()));
 873 }
 874
 875 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
 876 {
 877     QItemSelectionModel* selectionModel = itemView()->selectionModel();
 878     const QAbstractItemModel* itemModel = selectionModel->model();
 879
 880     const QModelIndex topLeft = itemModel->index(0, 0);
 881     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 882                                     itemModel->columnCount() - 1);
 883
 884     QItemSelection selection(topLeft, bottomRight);
 885     selectionModel->select(selection, flags);
 886 }
 887
 888 QAbstractItemView* DolphinView::itemView() const
 889 {
 890     if (m_detailsView != 0) {
 891         return m_detailsView;
 892     } else if (m_columnView != 0) {
 893         return m_columnView;
 894     }
 895
 896     return m_iconsView;
 897 }
 898
 899 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 900 {
 901     return index.isValid() && (index.column() == KDirModel::Name);
 902 }
 903
 904 bool DolphinView::isCutItem(const KFileItem& item) const
 905 {
 906     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 907     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 908
 909     const KUrl& itemUrl = item.url();
 910     KUrl::List::const_iterator it = cutUrls.begin();
 911     const KUrl::List::const_iterator end = cutUrls.end();
 912     while (it != end) {
 913         if (*it == itemUrl) {
 914             return true;
 915         }
 916         ++it;
 917     }
 918
 919     return false;
 920 }
 921
 922 void DolphinView::applyCutItemEffect()
 923 {
 924     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 925     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 926         return;
 927     }
 928
 929     KFileItemList items(m_dirLister->items());
 930     KFileItemList::const_iterator it = items.begin();
 931     const KFileItemList::const_iterator end = items.end();
 932     while (it != end) {
 933         KFileItem* item = *it;
 934         if (isCutItem(*item)) {
 935             const QModelIndex index = m_dirModel->indexForItem(*item);
 936             const KFileItem* item = m_dirModel->itemForIndex(index);
 937             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 938             if ((value.type() == QVariant::Icon) && (item != 0)) {
 939                 const QIcon icon(qvariant_cast<QIcon>(value));
 940                 QPixmap pixmap = icon.pixmap(128, 128);
 941
 942                 // remember current pixmap for the item to be able
 943                 // to restore it when other items get cut
 944                 CutItem cutItem;
 945                 cutItem.url = item->url();
 946                 cutItem.pixmap = pixmap;
 947                 m_cutItemsCache.append(cutItem);
 948
 949                 // apply icon effect to the cut item
 950                 KIconEffect iconEffect;
 951                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 952                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 953             }
 954         }
 955         ++it;
 956     }
 957 }
 958
 959 #include "dolphinview.moc"