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     const KUrl viewPropsUrl = viewPropertiesUrl();
 180     ViewProperties props(viewPropsUrl);
 181     props.setViewMode(m_mode);
 182
 183     createView();
 184     startDirLister(viewPropsUrl);
 185
 186     emit modeChanged();
 187 }
 188
 189 DolphinView::Mode DolphinView::mode() const
 190 {
 191     return m_mode;
 192 }
 193
 194 void DolphinView::setShowPreview(bool show)
 195 {
 196     const KUrl viewPropsUrl = viewPropertiesUrl();
 197     ViewProperties props(viewPropsUrl);
 198     props.setShowPreview(show);
 199
 200     m_controller->setShowPreview(show);
 201     emit showPreviewChanged();
 202
 203     startDirLister(viewPropsUrl, true);
 204 }
 205
 206 bool DolphinView::showPreview() const
 207 {
 208     return m_controller->showPreview();
 209 }
 210
 211 void DolphinView::setShowHiddenFiles(bool show)
 212 {
 213     if (m_dirLister->showingDotFiles() == show) {
 214         return;
 215     }
 216
 217     const KUrl viewPropsUrl = viewPropertiesUrl();
 218     ViewProperties props(viewPropsUrl);
 219     props.setShowHiddenFiles(show);
 220
 221     m_dirLister->setShowingDotFiles(show);
 222     emit showHiddenFilesChanged();
 223
 224     startDirLister(viewPropsUrl, true);
 225 }
 226
 227 bool DolphinView::showHiddenFiles() const
 228 {
 229     return m_dirLister->showingDotFiles();
 230 }
 231
 232 void DolphinView::setCategorizedSorting(bool categorized)
 233 {
 234     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 235         return;
 236     }
 237
 238     Q_ASSERT(m_iconsView != 0);
 239     if (categorized) {
 240         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 241         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 242     } else {
 243         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 244         m_iconsView->setItemCategorizer(0);
 245         delete categorizer;
 246     }
 247
 248     ViewProperties props(viewPropertiesUrl());
 249     props.setCategorizedSorting(categorized);
 250     props.save();
 251
 252     emit categorizedSortingChanged();
 253 }
 254
 255 bool DolphinView::categorizedSorting() const
 256 {
 257     if (!supportsCategorizedSorting()) {
 258         return false;
 259     }
 260
 261     Q_ASSERT(m_iconsView != 0);
 262     return m_iconsView->itemCategorizer() != 0;
 263 }
 264
 265 bool DolphinView::supportsCategorizedSorting() const
 266 {
 267     return m_iconsView != 0;
 268 }
 269
 270 void DolphinView::selectAll()
 271 {
 272     itemView()->selectAll();
 273 }
 274
 275 void DolphinView::invertSelection()
 276 {
 277     if (isColumnViewActive()) {
 278         // In opposite to QAbstractItemView::selectAll() there is no virtual method
 279         // for adjusting the invertion of a selection. As the generic approach by using
 280         // the selection model does not work for the column view, we delegate this task:
 281         m_columnView->invertSelection();
 282     } else {
 283         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 284         const QAbstractItemModel* itemModel = selectionModel->model();
 285
 286         const QModelIndex topLeft = itemModel->index(0, 0);
 287         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 288                                                          itemModel->columnCount() - 1);
 289
 290         QItemSelection selection(topLeft, bottomRight);
 291         selectionModel->select(selection, QItemSelectionModel::Toggle);
 292     }
 293 }
 294
 295 bool DolphinView::hasSelection() const
 296 {
 297     return itemView()->selectionModel()->hasSelection();
 298 }
 299
 300 void DolphinView::clearSelection()
 301 {
 302     itemView()->selectionModel()->clear();
 303 }
 304
 305 KFileItemList DolphinView::selectedItems() const
 306 {
 307     const QAbstractItemView* view = itemView();
 308
 309     // Our view has a selection, we will map them back to the DirModel
 310     // and then fill the KFileItemList.
 311     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 312
 313     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 314     KFileItemList itemList;
 315
 316     const QModelIndexList indexList = selection.indexes();
 317     QModelIndexList::const_iterator end = indexList.end();
 318     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 319         Q_ASSERT((*it).isValid());
 320
 321         KFileItem* item = m_dirModel->itemForIndex(*it);
 322         if (item != 0) {
 323             itemList.append(item);
 324         }
 325     }
 326
 327     return itemList;
 328 }
 329
 330 KUrl::List DolphinView::selectedUrls() const
 331 {
 332     KUrl::List urls;
 333
 334     const KFileItemList list = selectedItems();
 335     KFileItemList::const_iterator it = list.begin();
 336     const KFileItemList::const_iterator end = list.end();
 337     while (it != end) {
 338         KFileItem* item = *it;
 339         urls.append(item->url());
 340         ++it;
 341     }
 342
 343     return urls;
 344 }
 345
 346 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 347 {
 348     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 349     return m_dirModel->itemForIndex(dirModelIndex);
 350 }
 351
 352 void DolphinView::setContentsPosition(int x, int y)
 353 {
 354     QAbstractItemView* view = itemView();
 355     view->horizontalScrollBar()->setValue(x);
 356     view->verticalScrollBar()->setValue(y);
 357
 358     m_loadingDirectory = false;
 359 }
 360
 361 QPoint DolphinView::contentsPosition() const
 362 {
 363     const int x = itemView()->horizontalScrollBar()->value();
 364     const int y = itemView()->verticalScrollBar()->value();
 365     return QPoint(x, y);
 366 }
 367
 368 void DolphinView::zoomIn()
 369 {
 370     m_controller->triggerZoomIn();
 371 }
 372
 373 void DolphinView::zoomOut()
 374 {
 375     m_controller->triggerZoomOut();
 376 }
 377
 378 bool DolphinView::isZoomInPossible() const
 379 {
 380     return m_controller->isZoomInPossible();
 381 }
 382
 383 bool DolphinView::isZoomOutPossible() const
 384 {
 385     return m_controller->isZoomOutPossible();
 386 }
 387
 388 void DolphinView::setSorting(Sorting sorting)
 389 {
 390     if (sorting != this->sorting()) {
 391         updateSorting(sorting);
 392     }
 393 }
 394
 395 DolphinView::Sorting DolphinView::sorting() const
 396 {
 397     return m_proxyModel->sorting();
 398 }
 399
 400 void DolphinView::setSortOrder(Qt::SortOrder order)
 401 {
 402     if (sortOrder() != order) {
 403         updateSortOrder(order);
 404     }
 405 }
 406
 407 Qt::SortOrder DolphinView::sortOrder() const
 408 {
 409     return m_proxyModel->sortOrder();
 410 }
 411
 412 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 413 {
 414     const KUrl viewPropsUrl = viewPropertiesUrl();
 415     ViewProperties props(viewPropsUrl);
 416     props.setAdditionalInfo(info);
 417
 418     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 419     m_fileItemDelegate->setAdditionalInformation(info);
 420
 421     emit additionalInfoChanged(info);
 422     startDirLister(viewPropsUrl, true);
 423 }
 424
 425 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 426 {
 427     return m_fileItemDelegate->additionalInformation();
 428 }
 429
 430 void DolphinView::reload()
 431 {
 432     setUrl(url());
 433     startDirLister(url(), true);
 434 }
 435
 436 void DolphinView::refresh()
 437 {
 438     createView();
 439     applyViewProperties(m_controller->url());
 440     reload();
 441 }
 442
 443 void DolphinView::setUrl(const KUrl& url)
 444 {
 445     if (m_controller->url() == url) {
 446         return;
 447     }
 448
 449     m_controller->setUrl(url);
 450
 451     applyViewProperties(url);
 452
 453     startDirLister(url);
 454     emit urlChanged(url);
 455 }
 456
 457 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 458 {
 459     QWidget::mouseReleaseEvent(event);
 460     setActive(true);;
 461 }
 462 void DolphinView::activate()
 463 {
 464     setActive(true);
 465 }
 466
 467 void DolphinView::triggerItem(const QModelIndex& index)
 468 {
 469     if (!isValidNameIndex(index)) {
 470         clearSelection();
 471         showHoverInformation(index);
 472         return;
 473     }
 474
 475     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 476     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 477         // items are selected by the user, hence don't trigger the
 478         // item specified by 'index'
 479         return;
 480     }
 481
 482     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 483     if (item == 0) {
 484         return;
 485     }
 486
 487     // The stuff below should be moved to ViewContainer and be just a signal?
 488
 489     // Prefer the local path over the URL.
 490     bool isLocal;
 491     KUrl url = item->mostLocalUrl(isLocal);
 492
 493     if (item->isDir()) {
 494         setUrl(url);
 495     } else if (item->isFile()) {
 496         // allow to browse through ZIP and tar files
 497         KMimeType::Ptr mime = item->mimeTypePtr();
 498         if (mime->is("application/zip")) {
 499             url.setProtocol("zip");
 500             setUrl(url);
 501         } else if (mime->is("application/x-tar") ||
 502                    mime->is("application/x-tarz") ||
 503                    mime->is("application/x-bzip-compressed-tar") ||
 504                    mime->is("application/x-compressed-tar") ||
 505                    mime->is("application/x-tzo")) {
 506             url.setProtocol("tar");
 507             setUrl(url);
 508         } else {
 509             item->run();
 510         }
 511     } else {
 512         item->run();
 513     }
 514 }
 515
 516 void DolphinView::generatePreviews(const KFileItemList& items)
 517 {
 518     if (m_controller->showPreview()) {
 519
 520         // Must turn QList<KFileItem *> to QList<KFileItem>...
 521         QList<KFileItem> itemsToPreview;
 522         foreach( KFileItem* it, items )
 523             itemsToPreview.append( *it );
 524
 525         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 526         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 527                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 528     }
 529 }
 530
 531 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 532 {
 533     Q_ASSERT(!item.isNull());
 534     if (item.url().directory() != m_dirLister->url().path()) {
 535         // the preview job is still working on items of an older URL, hence
 536         // the item is not part of the directory model anymore
 537         return;
 538     }
 539
 540     const QModelIndex idx = m_dirModel->indexForItem(item);
 541     if (idx.isValid() && (idx.column() == 0)) {
 542         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 543         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 544             KIconEffect iconEffect;
 545             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 546             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 547         } else {
 548             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 549         }
 550     }
 551 }
 552
 553 void DolphinView::emitSelectionChangedSignal()
 554 {
 555     emit selectionChanged(DolphinView::selectedItems());
 556 }
 557
 558 void DolphinView::startDirLister(const KUrl& url, bool reload)
 559 {
 560     if (!url.isValid()) {
 561         const QString location(url.pathOrUrl());
 562         if (location.isEmpty()) {
 563             emit errorMessage(i18nc("@info:status", "The location is empty."));
 564         } else {
 565             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 566         }
 567         return;
 568     }
 569
 570     m_cutItemsCache.clear();
 571     m_loadingDirectory = true;
 572
 573     m_dirLister->stop();
 574
 575     bool openDir = true;
 576     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 577     m_initializeColumnView = false;
 578
 579     if (keepOldDirs) {
 580         if (reload) {
 581             keepOldDirs = false;
 582
 583             const KUrl& dirListerUrl = m_dirLister->url();
 584             if (dirListerUrl.isValid()) {
 585                 const KUrl::List dirs = m_dirLister->directories();
 586                 KUrl url;
 587                 foreach(url, dirs) {
 588                     m_dirLister->updateDirectory(url);
 589                 }
 590                 openDir = false;
 591             }
 592         } else if (m_dirLister->directories().contains(url)) {
 593             // The dir lister contains the directory already, so
 594             // KDirLister::openUrl() may not been invoked twice.
 595             m_dirLister->updateDirectory(url);
 596             openDir = false;
 597         } else {
 598             const KUrl& dirListerUrl = m_dirLister->url();
 599             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 600                 // The current URL is not a child of the dir lister
 601                 // URL. This may happen when e. g. a bookmark has been selected
 602                 // and hence the view must be reset.
 603                 keepOldDirs = false;
 604             }
 605         }
 606     }
 607
 608     if (openDir) {
 609         m_dirLister->openUrl(url, keepOldDirs, reload);
 610     }
 611 }
 612
 613 KUrl DolphinView::viewPropertiesUrl() const
 614 {
 615     if (isColumnViewActive()) {
 616         return m_dirLister->url();
 617     }
 618
 619     return url();
 620 }
 621
 622 void DolphinView::applyViewProperties(const KUrl& url)
 623 {
 624     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 625         // The column view is active, hence don't apply the view properties
 626         // of sub directories (represented by columns) to the view. The
 627         // view always represents the properties of the first column.
 628         return;
 629     }
 630
 631     const ViewProperties props(url);
 632
 633     const Mode mode = props.viewMode();
 634     if (m_mode != mode) {
 635         m_mode = mode;
 636         createView();
 637         emit modeChanged();
 638
 639         if (m_mode == ColumnView) {
 640             // The mode has been changed to the Column View. When starting the dir
 641             // lister with DolphinView::startDirLister() it is important to give a
 642             // hint that the dir lister may not keep the current directory
 643             // although this is the default for showing a hierarchy.
 644             m_initializeColumnView = true;
 645         }
 646     }
 647     if (itemView() == 0) {
 648         createView();
 649     }
 650     Q_ASSERT(itemView() != 0);
 651     Q_ASSERT(m_fileItemDelegate != 0);
 652
 653     const bool showHiddenFiles = props.showHiddenFiles();
 654     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 655         m_dirLister->setShowingDotFiles(showHiddenFiles);
 656         emit showHiddenFilesChanged();
 657     }
 658
 659     const bool categorized = props.categorizedSorting();
 660     if (categorized != categorizedSorting()) {
 661         if (supportsCategorizedSorting()) {
 662             Q_ASSERT(m_iconsView != 0);
 663             if (categorized) {
 664                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 665                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 666             } else {
 667                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 668                 m_iconsView->setItemCategorizer(0);
 669                 delete categorizer;
 670             }
 671         }
 672         emit categorizedSortingChanged();
 673     }
 674
 675     const DolphinView::Sorting sorting = props.sorting();
 676     if (sorting != m_proxyModel->sorting()) {
 677         m_proxyModel->setSorting(sorting);
 678         emit sortingChanged(sorting);
 679     }
 680
 681     const Qt::SortOrder sortOrder = props.sortOrder();
 682     if (sortOrder != m_proxyModel->sortOrder()) {
 683         m_proxyModel->setSortOrder(sortOrder);
 684         emit sortOrderChanged(sortOrder);
 685     }
 686
 687     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 688     if (info != m_fileItemDelegate->additionalInformation()) {
 689         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 690         m_fileItemDelegate->setAdditionalInformation(info);
 691         emit additionalInfoChanged(info);
 692     }
 693
 694     const bool showPreview = props.showPreview();
 695     if (showPreview != m_controller->showPreview()) {
 696         m_controller->setShowPreview(showPreview);
 697         emit showPreviewChanged();
 698     }
 699 }
 700
 701 void DolphinView::changeSelection(const KFileItemList& selection)
 702 {
 703     clearSelection();
 704     if (selection.isEmpty()) {
 705         return;
 706     }
 707     const KUrl& baseUrl = url();
 708     KUrl url;
 709     QItemSelection new_selection;
 710     foreach(KFileItem* item, selection) {
 711         url = item->url().upUrl();
 712         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 713             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
 714             new_selection.select(index, index);
 715         }
 716     }
 717     itemView()->selectionModel()->select(new_selection,
 718                                          QItemSelectionModel::ClearAndSelect
 719                                          | QItemSelectionModel::Current);
 720 }
 721
 722 void DolphinView::openContextMenu(const QPoint& pos)
 723 {
 724     KFileItem* item = 0;
 725
 726     const QModelIndex index = itemView()->indexAt(pos);
 727     if (isValidNameIndex(index)) {
 728         item = fileItem(index);
 729     }
 730
 731     emit requestContextMenu(item, url());
 732 }
 733
 734 void DolphinView::dropUrls(const KUrl::List& urls,
 735                            const QModelIndex& index,
 736                            QWidget* source)
 737 {
 738     KFileItem* directory = 0;
 739     if (isValidNameIndex(index)) {
 740         KFileItem* item = fileItem(index);
 741         Q_ASSERT(item != 0);
 742         if (item->isDir()) {
 743             // the URLs are dropped above a directory
 744             directory = item;
 745         }
 746     }
 747
 748     if ((directory == 0) && (source == itemView())) {
 749         // The dropping is done into the same viewport where
 750         // the dragging has been started. Just ignore this...
 751         return;
 752     }
 753
 754     const KUrl& destination = (directory == 0) ?
 755                               url() : directory->url();
 756     dropUrls(urls, destination);
 757 }
 758
 759 void DolphinView::dropUrls(const KUrl::List& urls,
 760                            const KUrl& destination)
 761 {
 762     emit urlsDropped(urls, destination);
 763 }
 764
 765 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 766 {
 767     ViewProperties props(viewPropertiesUrl());
 768     props.setSorting(sorting);
 769
 770     m_proxyModel->setSorting(sorting);
 771
 772     emit sortingChanged(sorting);
 773 }
 774
 775 void DolphinView::updateSortOrder(Qt::SortOrder order)
 776 {
 777     ViewProperties props(viewPropertiesUrl());
 778     props.setSortOrder(order);
 779
 780     m_proxyModel->setSortOrder(order);
 781
 782     emit sortOrderChanged(order);
 783 }
 784
 785 void DolphinView::emitContentsMoved()
 786 {
 787     // only emit the contents moved signal if:
 788     // - no directory loading is ongoing (this would reset the contents position
 789     //   always to (0, 0))
 790     // - if the Column View is active: the column view does an automatic
 791     //   positioning during the loading operation, which must be remembered
 792     if (!m_loadingDirectory || isColumnViewActive()) {
 793         const QPoint pos(contentsPosition());
 794         emit contentsMoved(pos.x(), pos.y());
 795     }
 796 }
 797
 798 void DolphinView::updateCutItems()
 799 {
 800     // restore the icons of all previously selected items to the
 801     // original state...
 802     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 803     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 804     while (it != end) {
 805         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 806         if (index.isValid()) {
 807             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 808         }
 809         ++it;
 810     }
 811     m_cutItemsCache.clear();
 812
 813     // ... and apply an item effect to all currently cut items
 814     applyCutItemEffect();
 815 }
 816
 817 void DolphinView::showHoverInformation(const QModelIndex& index)
 818 {
 819     if (hasSelection()) {
 820         return;
 821     }
 822
 823     const KFileItem* item = fileItem(index);
 824     if (item != 0) {
 825         emit requestItemInfo(*item);
 826     }
 827 }
 828
 829 void DolphinView::clearHoverInformation()
 830 {
 831     emit requestItemInfo(KFileItem());
 832 }
 833
 834
 835 void DolphinView::createView()
 836 {
 837     // delete current view
 838     QAbstractItemView* view = itemView();
 839     if (view != 0) {
 840         m_topLayout->removeWidget(view);
 841         view->close();
 842         if (view == m_iconsView) {
 843             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 844             m_iconsView->setItemCategorizer(0);
 845             delete categorizer;
 846         }
 847         view->deleteLater();
 848         view = 0;
 849         m_iconsView = 0;
 850         m_detailsView = 0;
 851         m_columnView = 0;
 852         m_fileItemDelegate = 0;
 853     }
 854
 855     Q_ASSERT(m_iconsView == 0);
 856     Q_ASSERT(m_detailsView == 0);
 857     Q_ASSERT(m_columnView == 0);
 858
 859     // ... and recreate it representing the current mode
 860     switch (m_mode) {
 861     case IconsView:
 862         m_iconsView = new DolphinIconsView(this, m_controller);
 863         view = m_iconsView;
 864         break;
 865
 866     case DetailsView:
 867         m_detailsView = new DolphinDetailsView(this, m_controller);
 868         view = m_detailsView;
 869         break;
 870
 871     case ColumnView:
 872         m_columnView = new DolphinColumnView(this, m_controller);
 873         view = m_columnView;
 874         break;
 875     }
 876
 877     Q_ASSERT(view != 0);
 878
 879     m_fileItemDelegate = new KFileItemDelegate(view);
 880     view->setItemDelegate(m_fileItemDelegate);
 881
 882     view->setModel(m_proxyModel);
 883     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 884
 885     new KMimeTypeResolver(view, m_dirModel);
 886     m_topLayout->insertWidget(1, view);
 887
 888     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 889             this, SLOT(emitSelectionChangedSignal()));
 890     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 891             this, SLOT(emitContentsMoved()));
 892     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 893             this, SLOT(emitContentsMoved()));
 894 }
 895
 896 QAbstractItemView* DolphinView::itemView() const
 897 {
 898     if (m_detailsView != 0) {
 899         return m_detailsView;
 900     } else if (m_columnView != 0) {
 901         return m_columnView;
 902     }
 903
 904     return m_iconsView;
 905 }
 906
 907 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 908 {
 909     return index.isValid() && (index.column() == KDirModel::Name);
 910 }
 911
 912 bool DolphinView::isCutItem(const KFileItem& item) const
 913 {
 914     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 915     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 916
 917     const KUrl& itemUrl = item.url();
 918     KUrl::List::const_iterator it = cutUrls.begin();
 919     const KUrl::List::const_iterator end = cutUrls.end();
 920     while (it != end) {
 921         if (*it == itemUrl) {
 922             return true;
 923         }
 924         ++it;
 925     }
 926
 927     return false;
 928 }
 929
 930 void DolphinView::applyCutItemEffect()
 931 {
 932     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 933     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 934         return;
 935     }
 936
 937     KFileItemList items(m_dirLister->items());
 938     KFileItemList::const_iterator it = items.begin();
 939     const KFileItemList::const_iterator end = items.end();
 940     while (it != end) {
 941         KFileItem* item = *it;
 942         if (isCutItem(*item)) {
 943             const QModelIndex index = m_dirModel->indexForItem(*item);
 944             const KFileItem* item = m_dirModel->itemForIndex(index);
 945             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 946             if ((value.type() == QVariant::Icon) && (item != 0)) {
 947                 const QIcon icon(qvariant_cast<QIcon>(value));
 948                 QPixmap pixmap = icon.pixmap(128, 128);
 949
 950                 // remember current pixmap for the item to be able
 951                 // to restore it when other items get cut
 952                 CutItem cutItem;
 953                 cutItem.url = item->url();
 954                 cutItem.pixmap = pixmap;
 955                 m_cutItemsCache.append(cutItem);
 956
 957                 // apply icon effect to the cut item
 958                 KIconEffect iconEffect;
 959                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 960                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 961             }
 962         }
 963         ++it;
 964     }
 965 }
 966
 967 #include "dolphinview.moc"