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                          Mode mode) :
  62     QWidget(parent),
  63     m_active(true),
  64     m_loadingDirectory(false),
  65     m_initializeColumnView(false),
  66     m_mode(mode),
  67     m_topLayout(0),
  68     m_controller(0),
  69     m_iconsView(0),
  70     m_detailsView(0),
  71     m_columnView(0),
  72     m_fileItemDelegate(0),
  73     m_dirModel(dirModel),
  74     m_dirLister(dirLister),
  75     m_proxyModel(proxyModel)
  76 {
  77     setFocusPolicy(Qt::StrongFocus);
  78     m_topLayout = new QVBoxLayout(this);
  79     m_topLayout->setSpacing(0);
  80     m_topLayout->setMargin(0);
  81
  82     QClipboard* clipboard = QApplication::clipboard();
  83     connect(clipboard, SIGNAL(dataChanged()),
  84             this, SLOT(updateCutItems()));
  85
  86     connect(m_dirLister, SIGNAL(completed()),
  87             this, SLOT(updateCutItems()));
  88     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
  89             this, SLOT(generatePreviews(const KFileItemList&)));
  90
  91     m_controller = new DolphinController(this);
  92     m_controller->setUrl(url);
  93     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  94             this, SLOT(openContextMenu(const QPoint&)));
  95     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&, QWidget*)),
  96             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&, QWidget*)));
  97     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
  98             this, SLOT(updateSorting(DolphinView::Sorting)));
  99     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 100             this, SLOT(updateSortOrder(Qt::SortOrder)));
 101     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 102             this, SLOT(triggerItem(const QModelIndex&)));
 103     connect(m_controller, SIGNAL(activated()),
 104             this, SLOT(activate()));
 105     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 106             this, SLOT(showHoverInformation(const QModelIndex&)));
 107     connect(m_controller, SIGNAL(viewportEntered()),
 108             this, SLOT(clearHoverInformation()));
 109
 110     createView();
 111     m_topLayout->addWidget(itemView());
 112 }
 113
 114 DolphinView::~DolphinView()
 115 {
 116 }
 117
 118 const KUrl& DolphinView::url() const
 119 {
 120     return m_controller->url();
 121 }
 122
 123 KUrl DolphinView::rootUrl() const
 124 {
 125     return isColumnViewActive() ? m_dirLister->url() : url();
 126 }
 127
 128 void DolphinView::setActive(bool active)
 129 {
 130     if (active == m_active) {
 131         return;
 132     }
 133
 134     m_active = active;
 135
 136     QColor color = KGlobalSettings::baseColor();
 137     if (active) {
 138         emit urlChanged(url());
 139         emit selectionChanged(selectedItems());
 140     } else {
 141         color.setAlpha(0);
 142     }
 143
 144     QWidget* viewport = itemView()->viewport();
 145     QPalette palette;
 146     palette.setColor(viewport->backgroundRole(), color);
 147     viewport->setPalette(palette);
 148
 149     update();
 150
 151     if (active) {
 152         emit activated();
 153     }
 154 }
 155
 156 bool DolphinView::isActive() const
 157 {
 158     return m_active;
 159 }
 160
 161 void DolphinView::setMode(Mode mode)
 162 {
 163     if (mode == m_mode) {
 164         return; // the wished mode is already set
 165     }
 166
 167     m_mode = mode;
 168
 169     if (isColumnViewActive()) {
 170         // When changing the mode in the column view, it makes sense
 171         // to go back to the root URL of the column view automatically.
 172         // Otherwise there it would not be possible to turn off the column view
 173         // without focusing the first column.
 174         // TODO: reactivate again after DolphinView/DolphinViewController split works
 175         //setUrl(m_dirLister->url());
 176         //m_controller->setUrl(m_dirLister->url());
 177     }
 178
 179     ViewProperties props(url());
 180     props.setViewMode(m_mode);
 181
 182     createView();
 183     startDirLister(url());
 184
 185     emit modeChanged();
 186 }
 187
 188 DolphinView::Mode DolphinView::mode() const
 189 {
 190     return m_mode;
 191 }
 192
 193 void DolphinView::setShowPreview(bool show)
 194 {
 195     ViewProperties props(url());
 196     props.setShowPreview(show);
 197
 198     m_controller->setShowPreview(show);
 199     emit showPreviewChanged();
 200
 201     startDirLister(url(), true);
 202 }
 203
 204 bool DolphinView::showPreview() const
 205 {
 206     return m_controller->showPreview();
 207 }
 208
 209 void DolphinView::setShowHiddenFiles(bool show)
 210 {
 211     if (m_dirLister->showingDotFiles() == show) {
 212         return;
 213     }
 214
 215     ViewProperties props(url());
 216     props.setShowHiddenFiles(show);
 217
 218     m_dirLister->setShowingDotFiles(show);
 219     emit showHiddenFilesChanged();
 220
 221     startDirLister(url(), true);
 222 }
 223
 224 bool DolphinView::showHiddenFiles() const
 225 {
 226     return m_dirLister->showingDotFiles();
 227 }
 228
 229 void DolphinView::setCategorizedSorting(bool categorized)
 230 {
 231     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 232         return;
 233     }
 234
 235     Q_ASSERT(m_iconsView != 0);
 236     if (categorized) {
 237         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 238         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 239     } else {
 240         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 241         m_iconsView->setItemCategorizer(0);
 242         delete categorizer;
 243     }
 244
 245     ViewProperties props(url());
 246     props.setCategorizedSorting(categorized);
 247     props.save();
 248
 249     emit categorizedSortingChanged();
 250 }
 251
 252 bool DolphinView::categorizedSorting() const
 253 {
 254     if (!supportsCategorizedSorting()) {
 255         return false;
 256     }
 257
 258     Q_ASSERT(m_iconsView != 0);
 259     return m_iconsView->itemCategorizer() != 0;
 260 }
 261
 262 bool DolphinView::supportsCategorizedSorting() const
 263 {
 264     return m_iconsView != 0;
 265 }
 266
 267 void DolphinView::selectAll()
 268 {
 269     selectAll(QItemSelectionModel::Select);
 270 }
 271
 272 void DolphinView::invertSelection()
 273 {
 274     selectAll(QItemSelectionModel::Toggle);
 275 }
 276
 277 bool DolphinView::hasSelection() const
 278 {
 279     return itemView()->selectionModel()->hasSelection();
 280 }
 281
 282 void DolphinView::clearSelection()
 283 {
 284     itemView()->selectionModel()->clear();
 285 }
 286
 287 KFileItemList DolphinView::selectedItems() const
 288 {
 289     const QAbstractItemView* view = itemView();
 290
 291     // Our view has a selection, we will map them back to the DirModel
 292     // and then fill the KFileItemList.
 293     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 294
 295     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 296     KFileItemList itemList;
 297
 298     const QModelIndexList indexList = selection.indexes();
 299     QModelIndexList::const_iterator end = indexList.end();
 300     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 301         Q_ASSERT((*it).isValid());
 302
 303         KFileItem* item = m_dirModel->itemForIndex(*it);
 304         if (item != 0) {
 305             itemList.append(item);
 306         }
 307     }
 308
 309     return itemList;
 310 }
 311
 312 KUrl::List DolphinView::selectedUrls() const
 313 {
 314     KUrl::List urls;
 315
 316     const KFileItemList list = selectedItems();
 317     KFileItemList::const_iterator it = list.begin();
 318     const KFileItemList::const_iterator end = list.end();
 319     while (it != end) {
 320         KFileItem* item = *it;
 321         urls.append(item->url());
 322         ++it;
 323     }
 324
 325     return urls;
 326 }
 327
 328 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 329 {
 330     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 331     return m_dirModel->itemForIndex(dirModelIndex);
 332 }
 333
 334 void DolphinView::setContentsPosition(int x, int y)
 335 {
 336     QAbstractItemView* view = itemView();
 337     view->horizontalScrollBar()->setValue(x);
 338     view->verticalScrollBar()->setValue(y);
 339
 340     m_loadingDirectory = false;
 341 }
 342
 343 QPoint DolphinView::contentsPosition() const
 344 {
 345     const int x = itemView()->horizontalScrollBar()->value();
 346     const int y = itemView()->verticalScrollBar()->value();
 347     return QPoint(x, y);
 348 }
 349
 350 void DolphinView::zoomIn()
 351 {
 352     m_controller->triggerZoomIn();
 353 }
 354
 355 void DolphinView::zoomOut()
 356 {
 357     m_controller->triggerZoomOut();
 358 }
 359
 360 bool DolphinView::isZoomInPossible() const
 361 {
 362     return m_controller->isZoomInPossible();
 363 }
 364
 365 bool DolphinView::isZoomOutPossible() const
 366 {
 367     return m_controller->isZoomOutPossible();
 368 }
 369
 370 void DolphinView::setSorting(Sorting sorting)
 371 {
 372     if (sorting != this->sorting()) {
 373         updateSorting(sorting);
 374     }
 375 }
 376
 377 DolphinView::Sorting DolphinView::sorting() const
 378 {
 379     return m_proxyModel->sorting();
 380 }
 381
 382 void DolphinView::setSortOrder(Qt::SortOrder order)
 383 {
 384     if (sortOrder() != order) {
 385         updateSortOrder(order);
 386     }
 387 }
 388
 389 Qt::SortOrder DolphinView::sortOrder() const
 390 {
 391     return m_proxyModel->sortOrder();
 392 }
 393
 394 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 395 {
 396     ViewProperties props(url());
 397     props.setAdditionalInfo(info);
 398
 399     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 400     m_fileItemDelegate->setAdditionalInformation(info);
 401
 402     emit additionalInfoChanged(info);
 403     startDirLister(url(), true);
 404 }
 405
 406 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 407 {
 408     return m_fileItemDelegate->additionalInformation();
 409 }
 410
 411 void DolphinView::reload()
 412 {
 413     setUrl(url());
 414     startDirLister(url(), true);
 415 }
 416
 417 void DolphinView::refresh()
 418 {
 419     createView();
 420     reload();
 421 }
 422
 423 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 424 {
 425     QWidget::mouseReleaseEvent(event);
 426     setActive(true);;
 427 }
 428 void DolphinView::activate()
 429 {
 430     setActive(true);
 431 }
 432
 433 void DolphinView::triggerItem(const QModelIndex& index)
 434 {
 435     if (!isValidNameIndex(index)) {
 436         clearSelection();
 437         showHoverInformation(index);
 438         return;
 439     }
 440
 441     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 442     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 443         // items are selected by the user, hence don't trigger the
 444         // item specified by 'index'
 445         return;
 446     }
 447
 448     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 449     if (item == 0) {
 450         return;
 451     }
 452
 453     // Prefer the local path over the URL. This assures that the
 454     // volume space information is correct. Assuming that the URL is media:/sda1,
 455     // and the local path is /windows/C: For the URL the space info is related
 456     // to the root partition (and hence wrong) and for the local path the space
 457     // info is related to the windows partition (-> correct).
 458     const QString localPath(item->localPath());
 459     KUrl url;
 460     if (localPath.isEmpty()) {
 461         url = item->url();
 462     } else {
 463         url = localPath;
 464     }
 465
 466     if (item->isDir()) {
 467         setUrl(url);
 468     } else if (item->isFile()) {
 469         // allow to browse through ZIP and tar files
 470         KMimeType::Ptr mime = item->mimeTypePtr();
 471         if (mime->is("application/zip")) {
 472             url.setProtocol("zip");
 473             setUrl(url);
 474         } else if (mime->is("application/x-tar") ||
 475                    mime->is("application/x-tarz") ||
 476                    mime->is("application/x-bzip-compressed-tar") ||
 477                    mime->is("application/x-compressed-tar") ||
 478                    mime->is("application/x-tzo")) {
 479             url.setProtocol("tar");
 480             setUrl(url);
 481         } else {
 482             item->run();
 483         }
 484     } else {
 485         item->run();
 486     }
 487 }
 488
 489 void DolphinView::generatePreviews(const KFileItemList& items)
 490 {
 491     if (m_controller->showPreview()) {
 492
 493         // Must turn QList<KFileItem *> to QList<KFileItem>...
 494         QList<KFileItem> itemsToPreview;
 495         foreach( KFileItem* it, items )
 496             itemsToPreview.append( *it );
 497
 498         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 499         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 500                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 501     }
 502 }
 503
 504 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 505 {
 506     Q_ASSERT(!item.isNull());
 507     if (item.url().directory() != m_dirLister->url().path()) {
 508         // the preview job is still working on items of an older URL, hence
 509         // the item is not part of the directory model anymore
 510         return;
 511     }
 512
 513     const QModelIndex idx = m_dirModel->indexForItem(item);
 514     if (idx.isValid() && (idx.column() == 0)) {
 515         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 516         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 517             KIconEffect iconEffect;
 518             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 519             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 520         } else {
 521             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 522         }
 523     }
 524 }
 525
 526 void DolphinView::emitSelectionChangedSignal()
 527 {
 528     emit selectionChanged(DolphinView::selectedItems());
 529 }
 530
 531 void DolphinView::startDirLister(const KUrl& url, bool reload)
 532 {
 533     if (!url.isValid()) {
 534         const QString location(url.pathOrUrl());
 535         if (location.isEmpty()) {
 536             emit errorMessage(i18n("The location is empty."));
 537         } else {
 538             emit errorMessage(i18n("The location '%1' is invalid.", location));
 539         }
 540         return;
 541     }
 542
 543     m_cutItemsCache.clear();
 544     m_loadingDirectory = true;
 545
 546     m_dirLister->stop();
 547
 548     bool openDir = true;
 549     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 550     m_initializeColumnView = false;
 551
 552     if (keepOldDirs) {
 553         if (reload) {
 554             keepOldDirs = false;
 555
 556             const KUrl& dirListerUrl = m_dirLister->url();
 557             if (dirListerUrl.isValid()) {
 558                 const KUrl::List dirs = m_dirLister->directories();
 559                 KUrl url;
 560                 foreach(url, dirs) {
 561                     m_dirLister->updateDirectory(url);
 562                 }
 563                 openDir = false;
 564             }
 565         } else if (m_dirLister->directories().contains(url)) {
 566             // The dir lister contains the directory already, so
 567             // KDirLister::openUrl() may not been invoked twice.
 568             m_dirLister->updateDirectory(url);
 569             openDir = false;
 570         } else {
 571             const KUrl& dirListerUrl = m_dirLister->url();
 572             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 573                 // The current URL is not a child of the dir lister
 574                 // URL. This may happen when e. g. a bookmark has been selected
 575                 // and hence the view must be reset.
 576                 keepOldDirs = false;
 577             }
 578         }
 579     }
 580
 581     if (openDir) {
 582         m_dirLister->openUrl(url, keepOldDirs, reload);
 583     }
 584 }
 585
 586 void DolphinView::setUrl(const KUrl& url)
 587 {
 588     if (m_controller->url() == url) {
 589         return;
 590     }
 591
 592     m_controller->setUrl(url);
 593
 594     const ViewProperties props(url);
 595
 596     const Mode mode = props.viewMode();
 597     bool changeMode = (m_mode != mode);
 598     if (changeMode && isColumnViewActive()) {
 599         // The column view is active. Only change the
 600         // mode if the current URL is no child of the column view.
 601         if (m_dirLister->url().isParentOf(url)) {
 602             changeMode = false;
 603         }
 604     }
 605
 606     if (changeMode) {
 607         m_mode = mode;
 608         createView();
 609         emit modeChanged();
 610
 611         if (m_mode == ColumnView) {
 612             // The mode has been changed to the Column View. When starting the dir
 613             // lister with DolphinView::startDirLister() it is important to give a
 614             // hint that the dir lister may not keep the current directory
 615             // although this is the default for showing a hierarchy.
 616             m_initializeColumnView = true;
 617         }
 618     }
 619
 620     const bool showHiddenFiles = props.showHiddenFiles();
 621     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 622         m_dirLister->setShowingDotFiles(showHiddenFiles);
 623         emit showHiddenFilesChanged();
 624     }
 625
 626     const bool categorized = props.categorizedSorting();
 627     if (categorized != categorizedSorting()) {
 628         if (supportsCategorizedSorting()) {
 629             Q_ASSERT(m_iconsView != 0);
 630             if (categorized) {
 631                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 632                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 633             } else {
 634                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 635                 m_iconsView->setItemCategorizer(0);
 636                 delete categorizer;
 637             }
 638         }
 639         emit categorizedSortingChanged();
 640     }
 641
 642     const DolphinView::Sorting sorting = props.sorting();
 643     if (sorting != m_proxyModel->sorting()) {
 644         m_proxyModel->setSorting(sorting);
 645         emit sortingChanged(sorting);
 646     }
 647
 648     const Qt::SortOrder sortOrder = props.sortOrder();
 649     if (sortOrder != m_proxyModel->sortOrder()) {
 650         m_proxyModel->setSortOrder(sortOrder);
 651         emit sortOrderChanged(sortOrder);
 652     }
 653
 654     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 655     if (info != m_fileItemDelegate->additionalInformation()) {
 656         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 657         m_fileItemDelegate->setAdditionalInformation(info);
 658         emit additionalInfoChanged(info);
 659     }
 660
 661     const bool showPreview = props.showPreview();
 662     if (showPreview != m_controller->showPreview()) {
 663         m_controller->setShowPreview(showPreview);
 664         emit showPreviewChanged();
 665     }
 666
 667     startDirLister(url);
 668     emit urlChanged(url);
 669 }
 670
 671 void DolphinView::changeSelection(const KFileItemList& selection)
 672 {
 673     clearSelection();
 674     if (selection.isEmpty()) {
 675         return;
 676     }
 677     const KUrl& baseUrl = url();
 678     KUrl url;
 679     QItemSelection new_selection;
 680     foreach(KFileItem* item, selection) {
 681         url = item->url().upUrl();
 682         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 683             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
 684             new_selection.select(index, index);
 685         }
 686     }
 687     itemView()->selectionModel()->select(new_selection,
 688                                          QItemSelectionModel::ClearAndSelect
 689                                          | QItemSelectionModel::Current);
 690 }
 691
 692 void DolphinView::openContextMenu(const QPoint& pos)
 693 {
 694     KFileItem* item = 0;
 695
 696     const QModelIndex index = itemView()->indexAt(pos);
 697     if (isValidNameIndex(index)) {
 698         item = fileItem(index);
 699     }
 700
 701     emit requestContextMenu(item, url());
 702 }
 703
 704 void DolphinView::dropUrls(const KUrl::List& urls,
 705                            const QModelIndex& index,
 706                            QWidget* source)
 707 {
 708     KFileItem* directory = 0;
 709     if (isValidNameIndex(index)) {
 710         KFileItem* item = fileItem(index);
 711         Q_ASSERT(item != 0);
 712         if (item->isDir()) {
 713             // the URLs are dropped above a directory
 714             directory = item;
 715         }
 716     }
 717
 718     if ((directory == 0) && (source == itemView())) {
 719         // The dropping is done into the same viewport where
 720         // the dragging has been started. Just ignore this...
 721         return;
 722     }
 723
 724     const KUrl& destination = (directory == 0) ?
 725                               url() : directory->url();
 726     dropUrls(urls, destination);
 727 }
 728
 729 void DolphinView::dropUrls(const KUrl::List& urls,
 730                            const KUrl& destination)
 731 {
 732     emit urlsDropped(urls, destination);
 733 }
 734
 735 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 736 {
 737     ViewProperties props(url());
 738     props.setSorting(sorting);
 739
 740     m_proxyModel->setSorting(sorting);
 741
 742     emit sortingChanged(sorting);
 743 }
 744
 745 void DolphinView::updateSortOrder(Qt::SortOrder order)
 746 {
 747     ViewProperties props(url());
 748     props.setSortOrder(order);
 749
 750     m_proxyModel->setSortOrder(order);
 751
 752     emit sortOrderChanged(order);
 753 }
 754
 755 void DolphinView::emitContentsMoved()
 756 {
 757     // only emit the contents moved signal if:
 758     // - no directory loading is ongoing (this would reset the contents position
 759     //   always to (0, 0))
 760     // - if the Column View is active: the column view does an automatic
 761     //   positioning during the loading operation, which must be remembered
 762     if (!m_loadingDirectory || isColumnViewActive()) {
 763         const QPoint pos(contentsPosition());
 764         emit contentsMoved(pos.x(), pos.y());
 765     }
 766 }
 767
 768 void DolphinView::updateCutItems()
 769 {
 770     // restore the icons of all previously selected items to the
 771     // original state...
 772     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 773     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 774     while (it != end) {
 775         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 776         if (index.isValid()) {
 777             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 778         }
 779         ++it;
 780     }
 781     m_cutItemsCache.clear();
 782
 783     // ... and apply an item effect to all currently cut items
 784     applyCutItemEffect();
 785 }
 786
 787 void DolphinView::showHoverInformation(const QModelIndex& index)
 788 {
 789     if (hasSelection()) {
 790         return;
 791     }
 792
 793     const KFileItem* item = fileItem(index);
 794     if (item != 0) {
 795         emit requestItemInfo(item->url());
 796     }
 797 }
 798
 799 void DolphinView::clearHoverInformation()
 800 {
 801     emit requestItemInfo(KUrl());
 802 }
 803
 804
 805 void DolphinView::createView()
 806 {
 807     // delete current view
 808     QAbstractItemView* view = itemView();
 809     if (view != 0) {
 810         m_topLayout->removeWidget(view);
 811         view->close();
 812         if (view == m_iconsView) {
 813             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 814             m_iconsView->setItemCategorizer(0);
 815             delete categorizer;
 816         }
 817         view->deleteLater();
 818         view = 0;
 819         m_iconsView = 0;
 820         m_detailsView = 0;
 821         m_columnView = 0;
 822         m_fileItemDelegate = 0;
 823     }
 824
 825     Q_ASSERT(m_iconsView == 0);
 826     Q_ASSERT(m_detailsView == 0);
 827     Q_ASSERT(m_columnView == 0);
 828
 829     // ... and recreate it representing the current mode
 830     switch (m_mode) {
 831     case IconsView:
 832         m_iconsView = new DolphinIconsView(this, m_controller);
 833         view = m_iconsView;
 834         break;
 835
 836     case DetailsView:
 837         m_detailsView = new DolphinDetailsView(this, m_controller);
 838         view = m_detailsView;
 839         break;
 840
 841     case ColumnView:
 842         m_columnView = new DolphinColumnView(this, m_controller);
 843         view = m_columnView;
 844         break;
 845     }
 846
 847     Q_ASSERT(view != 0);
 848
 849     m_fileItemDelegate = new KFileItemDelegate(view);
 850     view->setItemDelegate(m_fileItemDelegate);
 851
 852     view->setModel(m_proxyModel);
 853     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 854
 855     new KMimeTypeResolver(view, m_dirModel);
 856     m_topLayout->insertWidget(1, view);
 857
 858     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 859             this, SLOT(emitSelectionChangedSignal()));
 860     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 861             this, SLOT(emitContentsMoved()));
 862     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 863             this, SLOT(emitContentsMoved()));
 864 }
 865
 866 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
 867 {
 868     QItemSelectionModel* selectionModel = itemView()->selectionModel();
 869     const QAbstractItemModel* itemModel = selectionModel->model();
 870
 871     const QModelIndex topLeft = itemModel->index(0, 0);
 872     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 873                                     itemModel->columnCount() - 1);
 874
 875     QItemSelection selection(topLeft, bottomRight);
 876     selectionModel->select(selection, flags);
 877 }
 878
 879 QAbstractItemView* DolphinView::itemView() const
 880 {
 881     if (m_detailsView != 0) {
 882         return m_detailsView;
 883     } else if (m_columnView != 0) {
 884         return m_columnView;
 885     }
 886
 887     return m_iconsView;
 888 }
 889
 890 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 891 {
 892     return index.isValid() && (index.column() == KDirModel::Name);
 893 }
 894
 895 bool DolphinView::isCutItem(const KFileItem& item) const
 896 {
 897     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 898     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 899
 900     const KUrl& itemUrl = item.url();
 901     KUrl::List::const_iterator it = cutUrls.begin();
 902     const KUrl::List::const_iterator end = cutUrls.end();
 903     while (it != end) {
 904         if (*it == itemUrl) {
 905             return true;
 906         }
 907         ++it;
 908     }
 909
 910     return false;
 911 }
 912
 913 void DolphinView::applyCutItemEffect()
 914 {
 915     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 916     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 917         return;
 918     }
 919
 920     KFileItemList items(m_dirLister->items());
 921     KFileItemList::const_iterator it = items.begin();
 922     const KFileItemList::const_iterator end = items.end();
 923     while (it != end) {
 924         KFileItem* item = *it;
 925         if (isCutItem(*item)) {
 926             const QModelIndex index = m_dirModel->indexForItem(*item);
 927             const KFileItem* item = m_dirModel->itemForIndex(index);
 928             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 929             if ((value.type() == QVariant::Icon) && (item != 0)) {
 930                 const QIcon icon(qvariant_cast<QIcon>(value));
 931                 QPixmap pixmap = icon.pixmap(128, 128);
 932
 933                 // remember current pixmap for the item to be able
 934                 // to restore it when other items get cut
 935                 CutItem cutItem;
 936                 cutItem.url = item->url();
 937                 cutItem.pixmap = pixmap;
 938                 m_cutItemsCache.append(cutItem);
 939
 940                 // apply icon effect to the cut item
 941                 KIconEffect iconEffect;
 942                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 943                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 944             }
 945         }
 946         ++it;
 947     }
 948 }
 949
 950 #include "dolphinview.moc"