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 <kdirmodel.h>
  32 #include <kdirlister.h>
  33 #include <kfileitemdelegate.h>
  34 #include <kglobalsettings.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 = KGlobalSettings::baseColor();
 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     reload();
 419 }
 420
 421 void DolphinView::setUrl(const KUrl& url)
 422 {
 423     if (m_controller->url() == url) {
 424         return;
 425     }
 426
 427     m_controller->setUrl(url);
 428
 429     applyViewProperties(url);
 430
 431     startDirLister(url);
 432     emit urlChanged(url);
 433 }
 434
 435 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 436 {
 437     QWidget::mouseReleaseEvent(event);
 438     setActive(true);;
 439 }
 440 void DolphinView::activate()
 441 {
 442     setActive(true);
 443 }
 444
 445 void DolphinView::triggerItem(const QModelIndex& index)
 446 {
 447     if (!isValidNameIndex(index)) {
 448         clearSelection();
 449         showHoverInformation(index);
 450         return;
 451     }
 452
 453     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 454     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 455         // items are selected by the user, hence don't trigger the
 456         // item specified by 'index'
 457         return;
 458     }
 459
 460     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 461     if (item == 0) {
 462         return;
 463     }
 464
 465     // Prefer the local path over the URL. This assures that the
 466     // volume space information is correct. Assuming that the URL is media:/sda1,
 467     // and the local path is /windows/C: For the URL the space info is related
 468     // to the root partition (and hence wrong) and for the local path the space
 469     // info is related to the windows partition (-> correct).
 470     const QString localPath(item->localPath());
 471     KUrl url;
 472     if (localPath.isEmpty()) {
 473         url = item->url();
 474     } else {
 475         url = localPath;
 476     }
 477
 478     if (item->isDir()) {
 479         setUrl(url);
 480     } else if (item->isFile()) {
 481         // allow to browse through ZIP and tar files
 482         KMimeType::Ptr mime = item->mimeTypePtr();
 483         if (mime->is("application/zip")) {
 484             url.setProtocol("zip");
 485             setUrl(url);
 486         } else if (mime->is("application/x-tar") ||
 487                    mime->is("application/x-tarz") ||
 488                    mime->is("application/x-bzip-compressed-tar") ||
 489                    mime->is("application/x-compressed-tar") ||
 490                    mime->is("application/x-tzo")) {
 491             url.setProtocol("tar");
 492             setUrl(url);
 493         } else {
 494             item->run();
 495         }
 496     } else {
 497         item->run();
 498     }
 499 }
 500
 501 void DolphinView::generatePreviews(const KFileItemList& items)
 502 {
 503     if (m_controller->showPreview()) {
 504
 505         // Must turn QList<KFileItem *> to QList<KFileItem>...
 506         QList<KFileItem> itemsToPreview;
 507         foreach( KFileItem* it, items )
 508             itemsToPreview.append( *it );
 509
 510         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 511         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 512                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 513     }
 514 }
 515
 516 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 517 {
 518     Q_ASSERT(!item.isNull());
 519     if (item.url().directory() != m_dirLister->url().path()) {
 520         // the preview job is still working on items of an older URL, hence
 521         // the item is not part of the directory model anymore
 522         return;
 523     }
 524
 525     const QModelIndex idx = m_dirModel->indexForItem(item);
 526     if (idx.isValid() && (idx.column() == 0)) {
 527         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 528         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 529             KIconEffect iconEffect;
 530             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 531             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 532         } else {
 533             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 534         }
 535     }
 536 }
 537
 538 void DolphinView::emitSelectionChangedSignal()
 539 {
 540     emit selectionChanged(DolphinView::selectedItems());
 541 }
 542
 543 void DolphinView::startDirLister(const KUrl& url, bool reload)
 544 {
 545     if (!url.isValid()) {
 546         const QString location(url.pathOrUrl());
 547         if (location.isEmpty()) {
 548             emit errorMessage(i18n("The location is empty."));
 549         } else {
 550             emit errorMessage(i18n("The location '%1' is invalid.", location));
 551         }
 552         return;
 553     }
 554
 555     m_cutItemsCache.clear();
 556     m_loadingDirectory = true;
 557
 558     m_dirLister->stop();
 559
 560     bool openDir = true;
 561     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 562     m_initializeColumnView = false;
 563
 564     if (keepOldDirs) {
 565         if (reload) {
 566             keepOldDirs = false;
 567
 568             const KUrl& dirListerUrl = m_dirLister->url();
 569             if (dirListerUrl.isValid()) {
 570                 const KUrl::List dirs = m_dirLister->directories();
 571                 KUrl url;
 572                 foreach(url, dirs) {
 573                     m_dirLister->updateDirectory(url);
 574                 }
 575                 openDir = false;
 576             }
 577         } else if (m_dirLister->directories().contains(url)) {
 578             // The dir lister contains the directory already, so
 579             // KDirLister::openUrl() may not been invoked twice.
 580             m_dirLister->updateDirectory(url);
 581             openDir = false;
 582         } else {
 583             const KUrl& dirListerUrl = m_dirLister->url();
 584             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 585                 // The current URL is not a child of the dir lister
 586                 // URL. This may happen when e. g. a bookmark has been selected
 587                 // and hence the view must be reset.
 588                 keepOldDirs = false;
 589             }
 590         }
 591     }
 592
 593     if (openDir) {
 594         m_dirLister->openUrl(url, keepOldDirs, reload);
 595     }
 596 }
 597
 598 void DolphinView::applyViewProperties(const KUrl& url)
 599 {
 600     const ViewProperties props(url);
 601
 602     const Mode mode = props.viewMode();
 603     bool changeMode = (m_mode != mode);
 604     if (changeMode && isColumnViewActive()) {
 605         // The column view is active. Only change the
 606         // mode if the current URL is no child of the column view.
 607         if (m_dirLister->url().isParentOf(url)) {
 608             changeMode = false;
 609         }
 610     }
 611
 612     if (changeMode) {
 613         m_mode = mode;
 614         createView();
 615         emit modeChanged();
 616
 617         if (m_mode == ColumnView) {
 618             // The mode has been changed to the Column View. When starting the dir
 619             // lister with DolphinView::startDirLister() it is important to give a
 620             // hint that the dir lister may not keep the current directory
 621             // although this is the default for showing a hierarchy.
 622             m_initializeColumnView = true;
 623         }
 624     }
 625     if (itemView() == 0) {
 626         createView();
 627     }
 628     Q_ASSERT(itemView() != 0);
 629     Q_ASSERT(m_fileItemDelegate != 0);
 630
 631     const bool showHiddenFiles = props.showHiddenFiles();
 632     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 633         m_dirLister->setShowingDotFiles(showHiddenFiles);
 634         emit showHiddenFilesChanged();
 635     }
 636
 637     const bool categorized = props.categorizedSorting();
 638     if (categorized != categorizedSorting()) {
 639         if (supportsCategorizedSorting()) {
 640             Q_ASSERT(m_iconsView != 0);
 641             if (categorized) {
 642                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 643                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 644             } else {
 645                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 646                 m_iconsView->setItemCategorizer(0);
 647                 delete categorizer;
 648             }
 649         }
 650         emit categorizedSortingChanged();
 651     }
 652
 653     const DolphinView::Sorting sorting = props.sorting();
 654     if (sorting != m_proxyModel->sorting()) {
 655         m_proxyModel->setSorting(sorting);
 656         emit sortingChanged(sorting);
 657     }
 658
 659     const Qt::SortOrder sortOrder = props.sortOrder();
 660     if (sortOrder != m_proxyModel->sortOrder()) {
 661         m_proxyModel->setSortOrder(sortOrder);
 662         emit sortOrderChanged(sortOrder);
 663     }
 664
 665     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 666     if (info != m_fileItemDelegate->additionalInformation()) {
 667         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 668         m_fileItemDelegate->setAdditionalInformation(info);
 669         emit additionalInfoChanged(info);
 670     }
 671
 672     const bool showPreview = props.showPreview();
 673     if (showPreview != m_controller->showPreview()) {
 674         m_controller->setShowPreview(showPreview);
 675         emit showPreviewChanged();
 676     }
 677 }
 678
 679 void DolphinView::changeSelection(const KFileItemList& selection)
 680 {
 681     clearSelection();
 682     if (selection.isEmpty()) {
 683         return;
 684     }
 685     const KUrl& baseUrl = url();
 686     KUrl url;
 687     QItemSelection new_selection;
 688     foreach(KFileItem* item, selection) {
 689         url = item->url().upUrl();
 690         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 691             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
 692             new_selection.select(index, index);
 693         }
 694     }
 695     itemView()->selectionModel()->select(new_selection,
 696                                          QItemSelectionModel::ClearAndSelect
 697                                          | QItemSelectionModel::Current);
 698 }
 699
 700 void DolphinView::openContextMenu(const QPoint& pos)
 701 {
 702     KFileItem* item = 0;
 703
 704     const QModelIndex index = itemView()->indexAt(pos);
 705     if (isValidNameIndex(index)) {
 706         item = fileItem(index);
 707     }
 708
 709     emit requestContextMenu(item, url());
 710 }
 711
 712 void DolphinView::dropUrls(const KUrl::List& urls,
 713                            const QModelIndex& index,
 714                            QWidget* source)
 715 {
 716     KFileItem* directory = 0;
 717     if (isValidNameIndex(index)) {
 718         KFileItem* item = fileItem(index);
 719         Q_ASSERT(item != 0);
 720         if (item->isDir()) {
 721             // the URLs are dropped above a directory
 722             directory = item;
 723         }
 724     }
 725
 726     if ((directory == 0) && (source == itemView())) {
 727         // The dropping is done into the same viewport where
 728         // the dragging has been started. Just ignore this...
 729         return;
 730     }
 731
 732     const KUrl& destination = (directory == 0) ?
 733                               url() : directory->url();
 734     dropUrls(urls, destination);
 735 }
 736
 737 void DolphinView::dropUrls(const KUrl::List& urls,
 738                            const KUrl& destination)
 739 {
 740     emit urlsDropped(urls, destination);
 741 }
 742
 743 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 744 {
 745     ViewProperties props(url());
 746     props.setSorting(sorting);
 747
 748     m_proxyModel->setSorting(sorting);
 749
 750     emit sortingChanged(sorting);
 751 }
 752
 753 void DolphinView::updateSortOrder(Qt::SortOrder order)
 754 {
 755     ViewProperties props(url());
 756     props.setSortOrder(order);
 757
 758     m_proxyModel->setSortOrder(order);
 759
 760     emit sortOrderChanged(order);
 761 }
 762
 763 void DolphinView::emitContentsMoved()
 764 {
 765     // only emit the contents moved signal if:
 766     // - no directory loading is ongoing (this would reset the contents position
 767     //   always to (0, 0))
 768     // - if the Column View is active: the column view does an automatic
 769     //   positioning during the loading operation, which must be remembered
 770     if (!m_loadingDirectory || isColumnViewActive()) {
 771         const QPoint pos(contentsPosition());
 772         emit contentsMoved(pos.x(), pos.y());
 773     }
 774 }
 775
 776 void DolphinView::updateCutItems()
 777 {
 778     // restore the icons of all previously selected items to the
 779     // original state...
 780     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 781     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 782     while (it != end) {
 783         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 784         if (index.isValid()) {
 785             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 786         }
 787         ++it;
 788     }
 789     m_cutItemsCache.clear();
 790
 791     // ... and apply an item effect to all currently cut items
 792     applyCutItemEffect();
 793 }
 794
 795 void DolphinView::showHoverInformation(const QModelIndex& index)
 796 {
 797     if (hasSelection()) {
 798         return;
 799     }
 800
 801     const KFileItem* item = fileItem(index);
 802     if (item != 0) {
 803         emit requestItemInfo(item->url());
 804     }
 805 }
 806
 807 void DolphinView::clearHoverInformation()
 808 {
 809     emit requestItemInfo(KUrl());
 810 }
 811
 812
 813 void DolphinView::createView()
 814 {
 815     // delete current view
 816     QAbstractItemView* view = itemView();
 817     if (view != 0) {
 818         m_topLayout->removeWidget(view);
 819         view->close();
 820         if (view == m_iconsView) {
 821             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 822             m_iconsView->setItemCategorizer(0);
 823             delete categorizer;
 824         }
 825         view->deleteLater();
 826         view = 0;
 827         m_iconsView = 0;
 828         m_detailsView = 0;
 829         m_columnView = 0;
 830         m_fileItemDelegate = 0;
 831     }
 832
 833     Q_ASSERT(m_iconsView == 0);
 834     Q_ASSERT(m_detailsView == 0);
 835     Q_ASSERT(m_columnView == 0);
 836
 837     // ... and recreate it representing the current mode
 838     switch (m_mode) {
 839     case IconsView:
 840         m_iconsView = new DolphinIconsView(this, m_controller);
 841         view = m_iconsView;
 842         break;
 843
 844     case DetailsView:
 845         m_detailsView = new DolphinDetailsView(this, m_controller);
 846         view = m_detailsView;
 847         break;
 848
 849     case ColumnView:
 850         m_columnView = new DolphinColumnView(this, m_controller);
 851         view = m_columnView;
 852         break;
 853     }
 854
 855     Q_ASSERT(view != 0);
 856
 857     m_fileItemDelegate = new KFileItemDelegate(view);
 858     view->setItemDelegate(m_fileItemDelegate);
 859
 860     view->setModel(m_proxyModel);
 861     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 862
 863     new KMimeTypeResolver(view, m_dirModel);
 864     m_topLayout->insertWidget(1, view);
 865
 866     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 867             this, SLOT(emitSelectionChangedSignal()));
 868     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 869             this, SLOT(emitContentsMoved()));
 870     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 871             this, SLOT(emitContentsMoved()));
 872 }
 873
 874 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
 875 {
 876     QItemSelectionModel* selectionModel = itemView()->selectionModel();
 877     const QAbstractItemModel* itemModel = selectionModel->model();
 878
 879     const QModelIndex topLeft = itemModel->index(0, 0);
 880     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 881                                     itemModel->columnCount() - 1);
 882
 883     QItemSelection selection(topLeft, bottomRight);
 884     selectionModel->select(selection, flags);
 885 }
 886
 887 QAbstractItemView* DolphinView::itemView() const
 888 {
 889     if (m_detailsView != 0) {
 890         return m_detailsView;
 891     } else if (m_columnView != 0) {
 892         return m_columnView;
 893     }
 894
 895     return m_iconsView;
 896 }
 897
 898 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 899 {
 900     return index.isValid() && (index.column() == KDirModel::Name);
 901 }
 902
 903 bool DolphinView::isCutItem(const KFileItem& item) const
 904 {
 905     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 906     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 907
 908     const KUrl& itemUrl = item.url();
 909     KUrl::List::const_iterator it = cutUrls.begin();
 910     const KUrl::List::const_iterator end = cutUrls.end();
 911     while (it != end) {
 912         if (*it == itemUrl) {
 913             return true;
 914         }
 915         ++it;
 916     }
 917
 918     return false;
 919 }
 920
 921 void DolphinView::applyCutItemEffect()
 922 {
 923     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 924     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 925         return;
 926     }
 927
 928     KFileItemList items(m_dirLister->items());
 929     KFileItemList::const_iterator it = items.begin();
 930     const KFileItemList::const_iterator end = items.end();
 931     while (it != end) {
 932         KFileItem* item = *it;
 933         if (isCutItem(*item)) {
 934             const QModelIndex index = m_dirModel->indexForItem(*item);
 935             const KFileItem* item = m_dirModel->itemForIndex(index);
 936             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 937             if ((value.type() == QVariant::Icon) && (item != 0)) {
 938                 const QIcon icon(qvariant_cast<QIcon>(value));
 939                 QPixmap pixmap = icon.pixmap(128, 128);
 940
 941                 // remember current pixmap for the item to be able
 942                 // to restore it when other items get cut
 943                 CutItem cutItem;
 944                 cutItem.url = item->url();
 945                 cutItem.pixmap = pixmap;
 946                 m_cutItemsCache.append(cutItem);
 947
 948                 // apply icon effect to the cut item
 949                 KIconEffect iconEffect;
 950                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 951                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 952             }
 953         }
 954         ++it;
 955     }
 956 }
 957
 958 #include "dolphinview.moc"