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 <kdirlister.h>
  33 #include <kfileitemdelegate.h>
  34 #include <klocale.h>
  35 #include <kiconeffect.h>
  36 #include <kio/netaccess.h>
  37 #include <kio/renamedialog.h>
  38 #include <kio/previewjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41 #include <konq_operations.h>
  42 #include <kurl.h>
  43
  44 #include "dolphinmodel.h"
  45 #include "dolphincolumnview.h"
  46 #include "dolphincontroller.h"
  47 #include "dolphinsortfilterproxymodel.h"
  48 #include "dolphindetailsview.h"
  49 #include "dolphiniconsview.h"
  50 #include "renamedialog.h"
  51 #include "viewproperties.h"
  52 #include "dolphinsettings.h"
  53 #include "dolphin_generalsettings.h"
  54 #include "dolphincategorydrawer.h"
  55
  56 DolphinView::DolphinView(QWidget* parent,
  57                          const KUrl& url,
  58                          KDirLister* dirLister,
  59                          DolphinModel* dolphinModel,
  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_dolphinModel(dolphinModel),
  73     m_dirLister(dirLister),
  74     m_proxyModel(proxyModel),
  75     m_rootUrl(url)
  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 QList<KFileItem>&)),
  89             this, SLOT(generatePreviews(const QList<KFileItem>&)));
  90
  91     m_controller = new DolphinController(this);
  92     m_controller->setUrl(url);
  93     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  94             this, SIGNAL(urlChanged(const KUrl&)));
  95     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  96             this, SLOT(openContextMenu(const QPoint&)));
  97     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
  98             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
  99     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 100             this, SLOT(updateSorting(DolphinView::Sorting)));
 101     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 102             this, SLOT(updateSortOrder(Qt::SortOrder)));
 103     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 104             this, SLOT(triggerItem(const QModelIndex&)));
 105     connect(m_controller, SIGNAL(activated()),
 106             this, SLOT(activate()));
 107     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 108             this, SLOT(showHoverInformation(const QModelIndex&)));
 109     connect(m_controller, SIGNAL(viewportEntered()),
 110             this, SLOT(clearHoverInformation()));
 111
 112     applyViewProperties(url);
 113     m_topLayout->addWidget(itemView());
 114 }
 115
 116 DolphinView::~DolphinView()
 117 {
 118 }
 119
 120 const KUrl& DolphinView::url() const
 121 {
 122     return m_controller->url();
 123 }
 124
 125 void DolphinView::setRootUrl(const KUrl& url)
 126 {
 127     m_rootUrl = url;
 128 }
 129
 130 KUrl DolphinView::rootUrl() const
 131 {
 132     return isColumnViewActive() ? m_dirLister->url() : url();
 133 }
 134
 135 void DolphinView::setActive(bool active)
 136 {
 137     if (active == m_active) {
 138         return;
 139     }
 140
 141     m_active = active;
 142
 143     updateViewportColor();
 144     update();
 145
 146     if (active) {
 147         emit activated();
 148     }
 149 }
 150
 151 bool DolphinView::isActive() const
 152 {
 153     return m_active;
 154 }
 155
 156 void DolphinView::setMode(Mode mode)
 157 {
 158     if (mode == m_mode) {
 159         return; // the wished mode is already set
 160     }
 161
 162     m_mode = mode;
 163
 164     if (isColumnViewActive()) {
 165         // When changing the mode in the column view, it makes sense
 166         // to go back to the root URL of the column view automatically.
 167         // Otherwise there it would not be possible to turn off the column view
 168         // without focusing the first column.
 169         setUrl(m_dirLister->url());
 170         m_controller->setUrl(m_dirLister->url());
 171     }
 172
 173     const KUrl viewPropsUrl = viewPropertiesUrl();
 174     ViewProperties props(viewPropsUrl);
 175     props.setViewMode(m_mode);
 176
 177     createView();
 178     startDirLister(viewPropsUrl);
 179
 180     emit modeChanged();
 181 }
 182
 183 DolphinView::Mode DolphinView::mode() const
 184 {
 185     return m_mode;
 186 }
 187
 188 void DolphinView::setShowPreview(bool show)
 189 {
 190     const KUrl viewPropsUrl = viewPropertiesUrl();
 191     ViewProperties props(viewPropsUrl);
 192     props.setShowPreview(show);
 193
 194     m_controller->setShowPreview(show);
 195     emit showPreviewChanged();
 196
 197     startDirLister(viewPropsUrl, true);
 198 }
 199
 200 bool DolphinView::showPreview() const
 201 {
 202     return m_controller->showPreview();
 203 }
 204
 205 void DolphinView::setShowHiddenFiles(bool show)
 206 {
 207     if (m_dirLister->showingDotFiles() == show) {
 208         return;
 209     }
 210
 211     const KUrl viewPropsUrl = viewPropertiesUrl();
 212     ViewProperties props(viewPropsUrl);
 213     props.setShowHiddenFiles(show);
 214
 215     m_dirLister->setShowingDotFiles(show);
 216     emit showHiddenFilesChanged();
 217
 218     startDirLister(viewPropsUrl, true);
 219 }
 220
 221 bool DolphinView::showHiddenFiles() const
 222 {
 223     return m_dirLister->showingDotFiles();
 224 }
 225
 226 void DolphinView::setCategorizedSorting(bool categorized)
 227 {
 228     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 229         return;
 230     }
 231
 232     Q_ASSERT(m_iconsView != 0);
 233
 234     ViewProperties props(viewPropertiesUrl());
 235     props.setCategorizedSorting(categorized);
 236     props.save();
 237
 238     m_proxyModel->setCategorizedModel(categorized);
 239     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 240
 241     emit categorizedSortingChanged();
 242 }
 243
 244 bool DolphinView::categorizedSorting() const
 245 {
 246     return m_proxyModel->isCategorizedModel();
 247 }
 248
 249 bool DolphinView::supportsCategorizedSorting() const
 250 {
 251     return m_iconsView != 0;
 252 }
 253
 254 void DolphinView::selectAll()
 255 {
 256     itemView()->selectAll();
 257 }
 258
 259 void DolphinView::invertSelection()
 260 {
 261     QItemSelectionModel* selectionModel = itemView()->selectionModel();
 262     const QAbstractItemModel* itemModel = selectionModel->model();
 263
 264     const QModelIndex topLeft = itemModel->index(0, 0);
 265     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 266                                                      itemModel->columnCount() - 1);
 267
 268     QItemSelection selection(topLeft, bottomRight);
 269     selectionModel->select(selection, QItemSelectionModel::Toggle);
 270 }
 271
 272 bool DolphinView::hasSelection() const
 273 {
 274     return itemView()->selectionModel()->hasSelection();
 275 }
 276
 277 void DolphinView::clearSelection()
 278 {
 279     itemView()->selectionModel()->clear();
 280 }
 281
 282 QList<KFileItem> DolphinView::selectedItems() const
 283 {
 284     const QAbstractItemView* view = itemView();
 285
 286     // Our view has a selection, we will map them back to the DolphinModel
 287     // and then fill the KFileItemList.
 288     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 289
 290     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 291     QList<KFileItem> itemList;
 292
 293     const QModelIndexList indexList = selection.indexes();
 294     foreach (QModelIndex index, indexList) {
 295         KFileItem item = m_dolphinModel->itemForIndex(index);
 296         if (!item.isNull()) {
 297             itemList.append(item);
 298         }
 299     }
 300
 301     return itemList;
 302 }
 303
 304 KUrl::List DolphinView::selectedUrls() const
 305 {
 306     KUrl::List urls;
 307     const QList<KFileItem> list = selectedItems();
 308     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 309           it != end; ++it ) {
 310         urls.append((*it).url());
 311     }
 312     return urls;
 313 }
 314
 315 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 316 {
 317     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 318     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 319 }
 320
 321 void DolphinView::setContentsPosition(int x, int y)
 322 {
 323     QAbstractItemView* view = itemView();
 324
 325     // the ColumnView takes care itself for the horizontal scrolling
 326     if (!isColumnViewActive()) {
 327         view->horizontalScrollBar()->setValue(x);
 328     }
 329     view->verticalScrollBar()->setValue(y);
 330
 331     m_loadingDirectory = false;
 332 }
 333
 334 QPoint DolphinView::contentsPosition() const
 335 {
 336     const int x = itemView()->horizontalScrollBar()->value();
 337     const int y = itemView()->verticalScrollBar()->value();
 338     return QPoint(x, y);
 339 }
 340
 341 void DolphinView::zoomIn()
 342 {
 343     m_controller->triggerZoomIn();
 344 }
 345
 346 void DolphinView::zoomOut()
 347 {
 348     m_controller->triggerZoomOut();
 349 }
 350
 351 bool DolphinView::isZoomInPossible() const
 352 {
 353     return m_controller->isZoomInPossible();
 354 }
 355
 356 bool DolphinView::isZoomOutPossible() const
 357 {
 358     return m_controller->isZoomOutPossible();
 359 }
 360
 361 void DolphinView::setSorting(Sorting sorting)
 362 {
 363     if (sorting != this->sorting()) {
 364         updateSorting(sorting);
 365     }
 366 }
 367
 368 DolphinView::Sorting DolphinView::sorting() const
 369 {
 370     return m_proxyModel->sorting();
 371 }
 372
 373 void DolphinView::setSortOrder(Qt::SortOrder order)
 374 {
 375     if (sortOrder() != order) {
 376         updateSortOrder(order);
 377     }
 378 }
 379
 380 Qt::SortOrder DolphinView::sortOrder() const
 381 {
 382     return m_proxyModel->sortOrder();
 383 }
 384
 385 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 386 {
 387     const KUrl viewPropsUrl = viewPropertiesUrl();
 388     ViewProperties props(viewPropsUrl);
 389     props.setAdditionalInfo(info);
 390
 391     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 392     m_fileItemDelegate->setAdditionalInformation(info);
 393
 394     emit additionalInfoChanged(info);
 395     startDirLister(viewPropsUrl, true);
 396 }
 397
 398 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 399 {
 400     return m_fileItemDelegate->additionalInformation();
 401 }
 402
 403 void DolphinView::reload()
 404 {
 405     setUrl(url());
 406     startDirLister(url(), true);
 407 }
 408
 409 void DolphinView::refresh()
 410 {
 411     createView();
 412     applyViewProperties(m_controller->url());
 413     reload();
 414     updateViewportColor();
 415 }
 416
 417 void DolphinView::setUrl(const KUrl& url)
 418 {
 419     if (m_controller->url() == url) {
 420         return;
 421     }
 422
 423     const bool restoreColumnView = !isColumnViewActive()
 424                                     && !m_rootUrl.isEmpty()
 425                                     && m_rootUrl.isParentOf(url)
 426                                     && (m_rootUrl != url);
 427
 428     const KUrl oldRootUrl = rootUrl();
 429     m_controller->setUrl(url); // emits urlChanged, which we forward
 430
 431     if (restoreColumnView) {
 432         applyViewProperties(m_rootUrl);
 433         Q_ASSERT(itemView() == m_columnView);
 434         startDirLister(m_rootUrl);
 435         m_columnView->showColumn(url);
 436     } else {
 437         applyViewProperties(url);
 438         startDirLister(url);
 439     }
 440
 441     itemView()->setFocus();
 442
 443     const KUrl newRootUrl = rootUrl();
 444     if (newRootUrl != oldRootUrl) {
 445         emit rootUrlChanged(newRootUrl);
 446     }
 447 }
 448
 449 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 450 {
 451     QWidget::mouseReleaseEvent(event);
 452     setActive(true);
 453 }
 454 void DolphinView::activate()
 455 {
 456     setActive(true);
 457 }
 458
 459 void DolphinView::triggerItem(const QModelIndex& index)
 460 {
 461     Q_ASSERT(index.isValid());
 462
 463     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 464     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 465         // items are selected by the user, hence don't trigger the
 466         // item specified by 'index'
 467         return;
 468     }
 469
 470     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 471
 472     if (item.isNull()) {
 473         return;
 474     }
 475
 476     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 477 }
 478
 479 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 480 {
 481     if (m_controller->showPreview()) {
 482         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 483         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 484                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 485     }
 486 }
 487
 488 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 489 {
 490     Q_ASSERT(!item.isNull());
 491     if (item.url().directory() != m_dirLister->url().path()) {
 492         // the preview job is still working on items of an older URL, hence
 493         // the item is not part of the directory model anymore
 494         return;
 495     }
 496
 497     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 498     if (idx.isValid() && (idx.column() == 0)) {
 499         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 500         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 501             KIconEffect iconEffect;
 502             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 503             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 504         } else {
 505             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 506         }
 507     }
 508 }
 509
 510 void DolphinView::emitSelectionChangedSignal()
 511 {
 512     emit selectionChanged(DolphinView::selectedItems());
 513 }
 514
 515 void DolphinView::startDirLister(const KUrl& url, bool reload)
 516 {
 517     if (!url.isValid()) {
 518         const QString location(url.pathOrUrl());
 519         if (location.isEmpty()) {
 520             emit errorMessage(i18nc("@info:status", "The location is empty."));
 521         } else {
 522             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 523         }
 524         return;
 525     }
 526
 527     m_cutItemsCache.clear();
 528     m_loadingDirectory = true;
 529
 530     m_dirLister->stop();
 531
 532     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 533     m_initializeColumnView = false;
 534
 535     if (keepOldDirs) {
 536         // keeping old directories is only necessary for hierarchical views
 537         // like the column view
 538         if (reload) {
 539             // for the column view it is not enough to reload the directory lister,
 540             // so this task is delegated to the column view directly
 541             m_columnView->reload();
 542         } else if (m_dirLister->directories().contains(url)) {
 543             // The dir lister contains the directory already, so
 544             // KDirLister::openUrl() may not get invoked twice.
 545             m_dirLister->updateDirectory(url);
 546         } else {
 547             const KUrl& dirListerUrl = m_dirLister->url();
 548             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 549                 // The current URL is not a child of the dir lister
 550                 // URL. This may happen when e. g. a place has been selected
 551                 // and hence the view must be reset.
 552                 m_dirLister->openUrl(url, false, false);
 553             }
 554         }
 555     } else {
 556         m_dirLister->openUrl(url, false, reload);
 557     }
 558 }
 559
 560 KUrl DolphinView::viewPropertiesUrl() const
 561 {
 562     if (isColumnViewActive()) {
 563         return m_dirLister->url();
 564     }
 565
 566     return url();
 567 }
 568
 569 void DolphinView::applyViewProperties(const KUrl& url)
 570 {
 571     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 572         // The column view is active, hence don't apply the view properties
 573         // of sub directories (represented by columns) to the view. The
 574         // view always represents the properties of the first column.
 575         return;
 576     }
 577
 578     const ViewProperties props(url);
 579
 580     const Mode mode = props.viewMode();
 581     if (m_mode != mode) {
 582         m_mode = mode;
 583         createView();
 584         emit modeChanged();
 585
 586         if (m_mode == ColumnView) {
 587             // The mode has been changed to the Column View. When starting the dir
 588             // lister with DolphinView::startDirLister() it is important to give a
 589             // hint that the dir lister may not keep the current directory
 590             // although this is the default for showing a hierarchy.
 591             m_initializeColumnView = true;
 592         }
 593     }
 594     if (itemView() == 0) {
 595         createView();
 596     }
 597     Q_ASSERT(itemView() != 0);
 598     Q_ASSERT(m_fileItemDelegate != 0);
 599
 600     const bool showHiddenFiles = props.showHiddenFiles();
 601     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 602         m_dirLister->setShowingDotFiles(showHiddenFiles);
 603         emit showHiddenFilesChanged();
 604     }
 605
 606     const bool categorized = props.categorizedSorting();
 607     if (categorized != categorizedSorting()) {
 608         m_proxyModel->setCategorizedModel(categorized);
 609         emit categorizedSortingChanged();
 610     }
 611
 612     const DolphinView::Sorting sorting = props.sorting();
 613     if (sorting != m_proxyModel->sorting()) {
 614         m_proxyModel->setSorting(sorting);
 615         emit sortingChanged(sorting);
 616     }
 617
 618     const Qt::SortOrder sortOrder = props.sortOrder();
 619     if (sortOrder != m_proxyModel->sortOrder()) {
 620         m_proxyModel->setSortOrder(sortOrder);
 621         emit sortOrderChanged(sortOrder);
 622     }
 623
 624     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 625     if (info != m_fileItemDelegate->additionalInformation()) {
 626         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 627         m_fileItemDelegate->setAdditionalInformation(info);
 628         emit additionalInfoChanged(info);
 629     }
 630
 631     const bool showPreview = props.showPreview();
 632     if (showPreview != m_controller->showPreview()) {
 633         m_controller->setShowPreview(showPreview);
 634         emit showPreviewChanged();
 635     }
 636 }
 637
 638 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 639 {
 640     clearSelection();
 641     if (selection.isEmpty()) {
 642         return;
 643     }
 644     const KUrl& baseUrl = url();
 645     KUrl url;
 646     QItemSelection new_selection;
 647     foreach(const KFileItem& item, selection) {
 648         url = item.url().upUrl();
 649         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 650             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 651             new_selection.select(index, index);
 652         }
 653     }
 654     itemView()->selectionModel()->select(new_selection,
 655                                          QItemSelectionModel::ClearAndSelect
 656                                          | QItemSelectionModel::Current);
 657 }
 658
 659 void DolphinView::openContextMenu(const QPoint& pos)
 660 {
 661     KFileItem item;
 662
 663     const QModelIndex index = itemView()->indexAt(pos);
 664     if (isValidNameIndex(index)) {
 665         item = fileItem(index);
 666     }
 667
 668     emit requestContextMenu(item, url());
 669 }
 670
 671 void DolphinView::dropUrls(const KUrl::List& urls,
 672                            const KUrl& destPath,
 673                            const QModelIndex& destIndex,
 674                            QWidget* source)
 675 {
 676     KFileItem directory;
 677     if (isValidNameIndex(destIndex)) {
 678         KFileItem item = fileItem(destIndex);
 679         Q_ASSERT(!item.isNull());
 680         if (item.isDir()) {
 681             // the URLs are dropped above a directory
 682             directory = item;
 683         }
 684     }
 685
 686     if ((directory.isNull()) && (source == itemView())) {
 687         // The dropping is done into the same viewport where
 688         // the dragging has been started. Just ignore this...
 689         return;
 690     }
 691
 692     const KUrl& destination = (directory.isNull()) ?
 693                               destPath : directory.url();
 694     dropUrls(urls, destination);
 695 }
 696
 697 void DolphinView::dropUrls(const KUrl::List& urls,
 698                            const KUrl& destination)
 699 {
 700     emit urlsDropped(urls, destination);
 701 }
 702
 703 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 704 {
 705     ViewProperties props(viewPropertiesUrl());
 706     props.setSorting(sorting);
 707
 708     m_proxyModel->setSorting(sorting);
 709
 710     emit sortingChanged(sorting);
 711 }
 712
 713 void DolphinView::updateSortOrder(Qt::SortOrder order)
 714 {
 715     ViewProperties props(viewPropertiesUrl());
 716     props.setSortOrder(order);
 717
 718     m_proxyModel->setSortOrder(order);
 719
 720     emit sortOrderChanged(order);
 721 }
 722
 723 void DolphinView::emitContentsMoved()
 724 {
 725     // only emit the contents moved signal if:
 726     // - no directory loading is ongoing (this would reset the contents position
 727     //   always to (0, 0))
 728     // - if the Column View is active: the column view does an automatic
 729     //   positioning during the loading operation, which must be remembered
 730     if (!m_loadingDirectory || isColumnViewActive()) {
 731         const QPoint pos(contentsPosition());
 732         emit contentsMoved(pos.x(), pos.y());
 733     }
 734 }
 735
 736 void DolphinView::updateCutItems()
 737 {
 738     // restore the icons of all previously selected items to the
 739     // original state...
 740     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 741     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 742     while (it != end) {
 743         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 744         if (index.isValid()) {
 745             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 746         }
 747         ++it;
 748     }
 749     m_cutItemsCache.clear();
 750
 751     // ... and apply an item effect to all currently cut items
 752     applyCutItemEffect();
 753 }
 754
 755 void DolphinView::showHoverInformation(const QModelIndex& index)
 756 {
 757     if (hasSelection()) {
 758         return;
 759     }
 760
 761     const KFileItem item = fileItem(index);
 762     if (!item.isNull()) {
 763         emit requestItemInfo(item);
 764     }
 765 }
 766
 767 void DolphinView::clearHoverInformation()
 768 {
 769     emit requestItemInfo(KFileItem());
 770 }
 771
 772
 773 void DolphinView::createView()
 774 {
 775     // delete current view
 776     QAbstractItemView* view = itemView();
 777     if (view != 0) {
 778         m_topLayout->removeWidget(view);
 779         view->close();
 780         view->deleteLater();
 781         view = 0;
 782         m_iconsView = 0;
 783         m_detailsView = 0;
 784         m_columnView = 0;
 785         m_fileItemDelegate = 0;
 786     }
 787
 788     Q_ASSERT(m_iconsView == 0);
 789     Q_ASSERT(m_detailsView == 0);
 790     Q_ASSERT(m_columnView == 0);
 791
 792     // ... and recreate it representing the current mode
 793     switch (m_mode) {
 794     case IconsView:
 795         m_iconsView = new DolphinIconsView(this, m_controller);
 796         m_iconsView->setCategoryDrawer(new DolphinCategoryDrawer());
 797         view = m_iconsView;
 798         break;
 799
 800     case DetailsView:
 801         m_detailsView = new DolphinDetailsView(this, m_controller);
 802         view = m_detailsView;
 803         break;
 804
 805     case ColumnView:
 806         m_columnView = new DolphinColumnView(this, m_controller);
 807         view = m_columnView;
 808         break;
 809     }
 810
 811     Q_ASSERT(view != 0);
 812
 813     m_fileItemDelegate = new KFileItemDelegate(view);
 814     view->setItemDelegate(m_fileItemDelegate);
 815
 816     view->setModel(m_proxyModel);
 817     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 818
 819     new KMimeTypeResolver(view, m_dolphinModel);
 820     m_topLayout->insertWidget(1, view);
 821
 822     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 823             this, SLOT(emitSelectionChangedSignal()));
 824     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 825             this, SLOT(emitContentsMoved()));
 826     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 827             this, SLOT(emitContentsMoved()));
 828     view->setFocus();
 829 }
 830
 831 QAbstractItemView* DolphinView::itemView() const
 832 {
 833     if (m_detailsView != 0) {
 834         return m_detailsView;
 835     } else if (m_columnView != 0) {
 836         return m_columnView;
 837     }
 838
 839     return m_iconsView;
 840 }
 841
 842 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 843 {
 844     return index.isValid() && (index.column() == DolphinModel::Name);
 845 }
 846
 847 bool DolphinView::isCutItem(const KFileItem& item) const
 848 {
 849     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 850     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 851
 852     const KUrl& itemUrl = item.url();
 853     KUrl::List::const_iterator it = cutUrls.begin();
 854     const KUrl::List::const_iterator end = cutUrls.end();
 855     while (it != end) {
 856         if (*it == itemUrl) {
 857             return true;
 858         }
 859         ++it;
 860     }
 861
 862     return false;
 863 }
 864
 865 void DolphinView::applyCutItemEffect()
 866 {
 867     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 868     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 869         return;
 870     }
 871
 872     KFileItemList items(m_dirLister->items());
 873     KFileItemList::const_iterator it = items.begin();
 874     const KFileItemList::const_iterator end = items.end();
 875     while (it != end) {
 876         KFileItem* item = *it;
 877         if (isCutItem(*item)) {
 878             const QModelIndex index = m_dolphinModel->indexForItem(*item);
 879             // Huh? the item is already known
 880             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 881             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 882             if (value.type() == QVariant::Icon) {
 883                 const QIcon icon(qvariant_cast<QIcon>(value));
 884                 QPixmap pixmap = icon.pixmap(128, 128);
 885
 886                 // remember current pixmap for the item to be able
 887                 // to restore it when other items get cut
 888                 CutItem cutItem;
 889                 cutItem.url = item->url();
 890                 cutItem.pixmap = pixmap;
 891                 m_cutItemsCache.append(cutItem);
 892
 893                 // apply icon effect to the cut item
 894                 KIconEffect iconEffect;
 895                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 896                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 897             }
 898         }
 899         ++it;
 900     }
 901 }
 902
 903 void DolphinView::updateViewportColor()
 904 {
 905     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 906     if (m_active) {
 907         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 908         emit selectionChanged(selectedItems());
 909     } else {
 910         color.setAlpha(0);
 911     }
 912
 913     QWidget* viewport = itemView()->viewport();
 914     QPalette palette;
 915     palette.setColor(viewport->backgroundRole(), color);
 916     viewport->setPalette(palette);
 917 }
 918
 919 #include "dolphinview.moc"