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
  55 DolphinView::DolphinView(QWidget* parent,
  56                          const KUrl& url,
  57                          KDirLister* dirLister,
  58                          DolphinModel* dolphinModel,
  59                          DolphinSortFilterProxyModel* proxyModel) :
  60     QWidget(parent),
  61     m_active(true),
  62     m_loadingDirectory(false),
  63     m_initializeColumnView(false),
  64     m_mode(DolphinView::IconsView),
  65     m_topLayout(0),
  66     m_controller(0),
  67     m_iconsView(0),
  68     m_detailsView(0),
  69     m_columnView(0),
  70     m_fileItemDelegate(0),
  71     m_dolphinModel(dolphinModel),
  72     m_dirLister(dirLister),
  73     m_proxyModel(proxyModel)
  74 {
  75     setFocusPolicy(Qt::StrongFocus);
  76     m_topLayout = new QVBoxLayout(this);
  77     m_topLayout->setSpacing(0);
  78     m_topLayout->setMargin(0);
  79
  80     QClipboard* clipboard = QApplication::clipboard();
  81     connect(clipboard, SIGNAL(dataChanged()),
  82             this, SLOT(updateCutItems()));
  83
  84     connect(m_dirLister, SIGNAL(completed()),
  85             this, SLOT(updateCutItems()));
  86     connect(m_dirLister, SIGNAL(newItems(const QList<KFileItem>&)),
  87             this, SLOT(generatePreviews(const QList<KFileItem>&)));
  88
  89     m_controller = new DolphinController(this);
  90     m_controller->setUrl(url);
  91     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  92             this, SIGNAL(urlChanged(const KUrl&)));
  93     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  94             this, SLOT(openContextMenu(const QPoint&)));
  95     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
  96             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, 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     applyViewProperties(url);
 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     updateViewportColor();
 137     update();
 138
 139     if (active) {
 140         emit activated();
 141     }
 142 }
 143
 144 bool DolphinView::isActive() const
 145 {
 146     return m_active;
 147 }
 148
 149 void DolphinView::setMode(Mode mode)
 150 {
 151     if (mode == m_mode) {
 152         return; // the wished mode is already set
 153     }
 154
 155     m_mode = mode;
 156
 157     if (isColumnViewActive()) {
 158         // When changing the mode in the column view, it makes sense
 159         // to go back to the root URL of the column view automatically.
 160         // Otherwise there it would not be possible to turn off the column view
 161         // without focusing the first column.
 162         setUrl(m_dirLister->url());
 163         m_controller->setUrl(m_dirLister->url());
 164     }
 165
 166     const KUrl viewPropsUrl = viewPropertiesUrl();
 167     ViewProperties props(viewPropsUrl);
 168     props.setViewMode(m_mode);
 169
 170     createView();
 171
 172     // Not all view modes support categorized sorting. Adjust the sorting model
 173     // if changing the view mode results in a change of the categorized sorting
 174     // capabilities.
 175     const bool categorized = props.categorizedSorting() && supportsCategorizedSorting();
 176     if (categorized != categorizedSorting()) {
 177         m_proxyModel->setCategorizedModel(categorized);
 178         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 179         emit categorizedSortingChanged();
 180     }
 181
 182     startDirLister(viewPropsUrl);
 183
 184     emit modeChanged();
 185 }
 186
 187 DolphinView::Mode DolphinView::mode() const
 188 {
 189     return m_mode;
 190 }
 191
 192 void DolphinView::setShowPreview(bool show)
 193 {
 194     const KUrl viewPropsUrl = viewPropertiesUrl();
 195     ViewProperties props(viewPropsUrl);
 196     props.setShowPreview(show);
 197
 198     m_controller->setShowPreview(show);
 199     emit showPreviewChanged();
 200
 201     startDirLister(viewPropsUrl, 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     const KUrl viewPropsUrl = viewPropertiesUrl();
 216     ViewProperties props(viewPropsUrl);
 217     props.setShowHiddenFiles(show);
 218
 219     m_dirLister->setShowingDotFiles(show);
 220     emit showHiddenFilesChanged();
 221
 222     startDirLister(viewPropsUrl, true);
 223 }
 224
 225 bool DolphinView::showHiddenFiles() const
 226 {
 227     return m_dirLister->showingDotFiles();
 228 }
 229
 230 void DolphinView::setCategorizedSorting(bool categorized)
 231 {
 232     if (categorized == categorizedSorting()) {
 233         return;
 234     }
 235
 236     // setCategorizedSorting(true) may only get invoked
 237     // if the view supports categorized sorting
 238     Q_ASSERT(!categorized || supportsCategorizedSorting());
 239
 240     ViewProperties props(viewPropertiesUrl());
 241     props.setCategorizedSorting(categorized);
 242     props.save();
 243
 244     m_proxyModel->setCategorizedModel(categorized);
 245     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 246
 247     emit categorizedSortingChanged();
 248 }
 249
 250 bool DolphinView::categorizedSorting() const
 251 {
 252     return m_proxyModel->isCategorizedModel();
 253 }
 254
 255 bool DolphinView::supportsCategorizedSorting() const
 256 {
 257     return m_iconsView != 0;
 258 }
 259
 260 void DolphinView::selectAll()
 261 {
 262     itemView()->selectAll();
 263 }
 264
 265 void DolphinView::invertSelection()
 266 {
 267     if (isColumnViewActive()) {
 268         // QAbstractItemView does not offer a virtual method invertSelection()
 269         // as counterpart to QAbstractItemView::selectAll(). This makes it
 270         // necessary to delegate the inverting of the selection to the
 271         // column view, as only the selection of the active column should get
 272         // inverted.
 273         m_columnView->invertSelection();
 274     } else {
 275         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 276         const QAbstractItemModel* itemModel = selectionModel->model();
 277
 278         const QModelIndex topLeft = itemModel->index(0, 0);
 279         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 280                                                          itemModel->columnCount() - 1);
 281
 282         const QItemSelection selection(topLeft, bottomRight);
 283         selectionModel->select(selection, QItemSelectionModel::Toggle);
 284     }
 285 }
 286
 287 bool DolphinView::hasSelection() const
 288 {
 289     return itemView()->selectionModel()->hasSelection();
 290 }
 291
 292 void DolphinView::clearSelection()
 293 {
 294     itemView()->selectionModel()->clear();
 295 }
 296
 297 QList<KFileItem> DolphinView::selectedItems() const
 298 {
 299     const QAbstractItemView* view = itemView();
 300
 301     // Our view has a selection, we will map them back to the DolphinModel
 302     // and then fill the KFileItemList.
 303     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 304
 305     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 306     QList<KFileItem> itemList;
 307
 308     const QModelIndexList indexList = selection.indexes();
 309     foreach (QModelIndex index, indexList) {
 310         KFileItem item = m_dolphinModel->itemForIndex(index);
 311         if (!item.isNull()) {
 312             itemList.append(item);
 313         }
 314     }
 315
 316     return itemList;
 317 }
 318
 319 KUrl::List DolphinView::selectedUrls() const
 320 {
 321     KUrl::List urls;
 322     const QList<KFileItem> list = selectedItems();
 323     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 324           it != end; ++it ) {
 325         urls.append((*it).url());
 326     }
 327     return urls;
 328 }
 329
 330 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 331 {
 332     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 333     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 334 }
 335
 336 void DolphinView::setContentsPosition(int x, int y)
 337 {
 338     QAbstractItemView* view = itemView();
 339
 340     // the ColumnView takes care itself for the horizontal scrolling
 341     if (!isColumnViewActive()) {
 342         view->horizontalScrollBar()->setValue(x);
 343     }
 344     view->verticalScrollBar()->setValue(y);
 345
 346     m_loadingDirectory = false;
 347 }
 348
 349 QPoint DolphinView::contentsPosition() const
 350 {
 351     const int x = itemView()->horizontalScrollBar()->value();
 352     const int y = itemView()->verticalScrollBar()->value();
 353     return QPoint(x, y);
 354 }
 355
 356 void DolphinView::zoomIn()
 357 {
 358     m_controller->triggerZoomIn();
 359 }
 360
 361 void DolphinView::zoomOut()
 362 {
 363     m_controller->triggerZoomOut();
 364 }
 365
 366 bool DolphinView::isZoomInPossible() const
 367 {
 368     return m_controller->isZoomInPossible();
 369 }
 370
 371 bool DolphinView::isZoomOutPossible() const
 372 {
 373     return m_controller->isZoomOutPossible();
 374 }
 375
 376 void DolphinView::setSorting(Sorting sorting)
 377 {
 378     if (sorting != this->sorting()) {
 379         updateSorting(sorting);
 380     }
 381 }
 382
 383 DolphinView::Sorting DolphinView::sorting() const
 384 {
 385     return m_proxyModel->sorting();
 386 }
 387
 388 void DolphinView::setSortOrder(Qt::SortOrder order)
 389 {
 390     if (sortOrder() != order) {
 391         updateSortOrder(order);
 392     }
 393 }
 394
 395 Qt::SortOrder DolphinView::sortOrder() const
 396 {
 397     return m_proxyModel->sortOrder();
 398 }
 399
 400 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 401 {
 402     const KUrl viewPropsUrl = viewPropertiesUrl();
 403     ViewProperties props(viewPropsUrl);
 404     props.setAdditionalInfo(info);
 405
 406     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 407     m_fileItemDelegate->setAdditionalInformation(info);
 408
 409     emit additionalInfoChanged(info);
 410     startDirLister(viewPropsUrl, true);
 411 }
 412
 413 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 414 {
 415     return m_fileItemDelegate->additionalInformation();
 416 }
 417
 418 void DolphinView::reload()
 419 {
 420     setUrl(url());
 421     startDirLister(url(), true);
 422 }
 423
 424 void DolphinView::refresh()
 425 {
 426     createView();
 427     applyViewProperties(m_controller->url());
 428     reload();
 429     updateViewportColor();
 430 }
 431
 432 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 433 {
 434     if (m_controller->url() == url) {
 435         return;
 436     }
 437
 438     const bool restoreColumnView =  !rootUrl.isEmpty()
 439                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 440                                     && rootUrl.isParentOf(url);
 441
 442     m_controller->setUrl(url); // emits urlChanged, which we forward
 443
 444     if (restoreColumnView) {
 445         applyViewProperties(rootUrl);
 446         Q_ASSERT(itemView() == m_columnView);
 447         startDirLister(rootUrl);
 448         m_columnView->showColumn(url);
 449     } else {
 450         applyViewProperties(url);
 451         startDirLister(url);
 452     }
 453
 454     itemView()->setFocus();
 455
 456     emit startedPathLoading(url);
 457 }
 458
 459 void DolphinView::setUrl(const KUrl& url)
 460 {
 461     updateView(url, KUrl());
 462 }
 463
 464 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 465 {
 466     QWidget::mouseReleaseEvent(event);
 467     setActive(true);
 468 }
 469 void DolphinView::activate()
 470 {
 471     setActive(true);
 472 }
 473
 474 void DolphinView::triggerItem(const QModelIndex& index)
 475 {
 476     Q_ASSERT(index.isValid());
 477
 478     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 479     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 480         // items are selected by the user, hence don't trigger the
 481         // item specified by 'index'
 482         return;
 483     }
 484
 485     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 486
 487     if (item.isNull()) {
 488         return;
 489     }
 490
 491     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 492 }
 493
 494 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 495 {
 496     if (m_controller->showPreview()) {
 497         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 498         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 499                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 500     }
 501 }
 502
 503 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 504 {
 505     Q_ASSERT(!item.isNull());
 506     if (item.url().directory() != m_dirLister->url().path()) {
 507         // the preview job is still working on items of an older URL, hence
 508         // the item is not part of the directory model anymore
 509         return;
 510     }
 511
 512     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 513     if (idx.isValid() && (idx.column() == 0)) {
 514         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 515         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 516             KIconEffect iconEffect;
 517             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 518             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 519         } else {
 520             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 521         }
 522     }
 523 }
 524
 525 void DolphinView::emitSelectionChangedSignal()
 526 {
 527     emit selectionChanged(DolphinView::selectedItems());
 528 }
 529
 530 void DolphinView::startDirLister(const KUrl& url, bool reload)
 531 {
 532     if (!url.isValid()) {
 533         const QString location(url.pathOrUrl());
 534         if (location.isEmpty()) {
 535             emit errorMessage(i18nc("@info:status", "The location is empty."));
 536         } else {
 537             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 538         }
 539         return;
 540     }
 541
 542     m_cutItemsCache.clear();
 543     m_loadingDirectory = true;
 544
 545     m_dirLister->stop();
 546
 547     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 548     m_initializeColumnView = false;
 549
 550     if (keepOldDirs) {
 551         // keeping old directories is only necessary for hierarchical views
 552         // like the column view
 553         if (reload) {
 554             // for the column view it is not enough to reload the directory lister,
 555             // so this task is delegated to the column view directly
 556             m_columnView->reload();
 557         } else if (m_dirLister->directories().contains(url)) {
 558             // The dir lister contains the directory already, so
 559             // KDirLister::openUrl() may not get invoked twice.
 560             m_dirLister->updateDirectory(url);
 561         } else {
 562             const KUrl& dirListerUrl = m_dirLister->url();
 563             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 564                 // The current URL is not a child of the dir lister
 565                 // URL. This may happen when e. g. a place has been selected
 566                 // and hence the view must be reset.
 567                 m_dirLister->openUrl(url, false, false);
 568             }
 569         }
 570     } else {
 571         m_dirLister->openUrl(url, false, reload);
 572     }
 573 }
 574
 575 KUrl DolphinView::viewPropertiesUrl() const
 576 {
 577     if (isColumnViewActive()) {
 578         return m_dirLister->url();
 579     }
 580
 581     return url();
 582 }
 583
 584 void DolphinView::applyViewProperties(const KUrl& url)
 585 {
 586     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 587         // The column view is active, hence don't apply the view properties
 588         // of sub directories (represented by columns) to the view. The
 589         // view always represents the properties of the first column.
 590         return;
 591     }
 592
 593     const ViewProperties props(url);
 594
 595     const Mode mode = props.viewMode();
 596     if (m_mode != mode) {
 597         m_mode = mode;
 598         createView();
 599         emit modeChanged();
 600
 601         if (m_mode == ColumnView) {
 602             // The mode has been changed to the Column View. When starting the dir
 603             // lister with DolphinView::startDirLister() it is important to give a
 604             // hint that the dir lister may not keep the current directory
 605             // although this is the default for showing a hierarchy.
 606             m_initializeColumnView = true;
 607         }
 608     }
 609     if (itemView() == 0) {
 610         createView();
 611     }
 612     Q_ASSERT(itemView() != 0);
 613     Q_ASSERT(m_fileItemDelegate != 0);
 614
 615     const bool showHiddenFiles = props.showHiddenFiles();
 616     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 617         m_dirLister->setShowingDotFiles(showHiddenFiles);
 618         emit showHiddenFilesChanged();
 619     }
 620
 621     const bool categorized = props.categorizedSorting() && supportsCategorizedSorting();
 622     if (categorized != categorizedSorting()) {
 623         m_proxyModel->setCategorizedModel(categorized);
 624         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 625         emit categorizedSortingChanged();
 626     }
 627
 628     const DolphinView::Sorting sorting = props.sorting();
 629     if (sorting != m_proxyModel->sorting()) {
 630         m_proxyModel->setSorting(sorting);
 631         emit sortingChanged(sorting);
 632     }
 633
 634     const Qt::SortOrder sortOrder = props.sortOrder();
 635     if (sortOrder != m_proxyModel->sortOrder()) {
 636         m_proxyModel->setSortOrder(sortOrder);
 637         emit sortOrderChanged(sortOrder);
 638     }
 639
 640     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 641     if (info != m_fileItemDelegate->additionalInformation()) {
 642         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 643         m_fileItemDelegate->setAdditionalInformation(info);
 644         emit additionalInfoChanged(info);
 645     }
 646
 647     const bool showPreview = props.showPreview();
 648     if (showPreview != m_controller->showPreview()) {
 649         m_controller->setShowPreview(showPreview);
 650         emit showPreviewChanged();
 651     }
 652 }
 653
 654 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 655 {
 656     clearSelection();
 657     if (selection.isEmpty()) {
 658         return;
 659     }
 660     const KUrl& baseUrl = url();
 661     KUrl url;
 662     QItemSelection new_selection;
 663     foreach(const KFileItem& item, selection) {
 664         url = item.url().upUrl();
 665         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 666             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 667             new_selection.select(index, index);
 668         }
 669     }
 670     itemView()->selectionModel()->select(new_selection,
 671                                          QItemSelectionModel::ClearAndSelect
 672                                          | QItemSelectionModel::Current);
 673 }
 674
 675 void DolphinView::openContextMenu(const QPoint& pos)
 676 {
 677     KFileItem item;
 678
 679     const QModelIndex index = itemView()->indexAt(pos);
 680     if (isValidNameIndex(index)) {
 681         item = fileItem(index);
 682     }
 683
 684     emit requestContextMenu(item, url());
 685 }
 686
 687 void DolphinView::dropUrls(const KUrl::List& urls,
 688                            const KUrl& destPath,
 689                            const QModelIndex& destIndex,
 690                            QWidget* source)
 691 {
 692     KFileItem directory;
 693     if (isValidNameIndex(destIndex)) {
 694         KFileItem item = fileItem(destIndex);
 695         Q_ASSERT(!item.isNull());
 696         if (item.isDir()) {
 697             // the URLs are dropped above a directory
 698             directory = item;
 699         }
 700     }
 701
 702     if ((directory.isNull()) && (source == itemView())) {
 703         // The dropping is done into the same viewport where
 704         // the dragging has been started. Just ignore this...
 705         return;
 706     }
 707
 708     const KUrl& destination = (directory.isNull()) ?
 709                               destPath : directory.url();
 710     dropUrls(urls, destination);
 711 }
 712
 713 void DolphinView::dropUrls(const KUrl::List& urls,
 714                            const KUrl& destination)
 715 {
 716     emit urlsDropped(urls, destination);
 717 }
 718
 719 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 720 {
 721     ViewProperties props(viewPropertiesUrl());
 722     props.setSorting(sorting);
 723
 724     m_proxyModel->setSorting(sorting);
 725
 726     emit sortingChanged(sorting);
 727 }
 728
 729 void DolphinView::updateSortOrder(Qt::SortOrder order)
 730 {
 731     ViewProperties props(viewPropertiesUrl());
 732     props.setSortOrder(order);
 733
 734     m_proxyModel->setSortOrder(order);
 735
 736     emit sortOrderChanged(order);
 737 }
 738
 739 void DolphinView::emitContentsMoved()
 740 {
 741     // only emit the contents moved signal if:
 742     // - no directory loading is ongoing (this would reset the contents position
 743     //   always to (0, 0))
 744     // - if the Column View is active: the column view does an automatic
 745     //   positioning during the loading operation, which must be remembered
 746     if (!m_loadingDirectory || isColumnViewActive()) {
 747         const QPoint pos(contentsPosition());
 748         emit contentsMoved(pos.x(), pos.y());
 749     }
 750 }
 751
 752 void DolphinView::updateCutItems()
 753 {
 754     // restore the icons of all previously selected items to the
 755     // original state...
 756     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 757     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 758     while (it != end) {
 759         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 760         if (index.isValid()) {
 761             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 762         }
 763         ++it;
 764     }
 765     m_cutItemsCache.clear();
 766
 767     // ... and apply an item effect to all currently cut items
 768     applyCutItemEffect();
 769 }
 770
 771 void DolphinView::showHoverInformation(const QModelIndex& index)
 772 {
 773     if (hasSelection()) {
 774         return;
 775     }
 776
 777     const KFileItem item = fileItem(index);
 778     if (!item.isNull()) {
 779         emit requestItemInfo(item);
 780     }
 781 }
 782
 783 void DolphinView::clearHoverInformation()
 784 {
 785     emit requestItemInfo(KFileItem());
 786 }
 787
 788
 789 void DolphinView::createView()
 790 {
 791     // delete current view
 792     QAbstractItemView* view = itemView();
 793     if (view != 0) {
 794         m_topLayout->removeWidget(view);
 795         view->close();
 796         view->deleteLater();
 797         view = 0;
 798         m_iconsView = 0;
 799         m_detailsView = 0;
 800         m_columnView = 0;
 801         m_fileItemDelegate = 0;
 802     }
 803
 804     Q_ASSERT(m_iconsView == 0);
 805     Q_ASSERT(m_detailsView == 0);
 806     Q_ASSERT(m_columnView == 0);
 807
 808     // ... and recreate it representing the current mode
 809     switch (m_mode) {
 810     case IconsView: {
 811         m_iconsView = new DolphinIconsView(this, m_controller);
 812         view = m_iconsView;
 813         break;
 814     }
 815
 816     case DetailsView:
 817         m_detailsView = new DolphinDetailsView(this, m_controller);
 818         view = m_detailsView;
 819         break;
 820
 821     case ColumnView:
 822         m_columnView = new DolphinColumnView(this, m_controller);
 823         view = m_columnView;
 824         break;
 825     }
 826
 827     Q_ASSERT(view != 0);
 828
 829     m_fileItemDelegate = new KFileItemDelegate(view);
 830     view->setItemDelegate(m_fileItemDelegate);
 831
 832     view->setModel(m_proxyModel);
 833     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 834
 835     new KMimeTypeResolver(view, m_dolphinModel);
 836     m_topLayout->insertWidget(1, view);
 837
 838     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 839             this, SLOT(emitSelectionChangedSignal()));
 840     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 841             this, SLOT(emitContentsMoved()));
 842     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 843             this, SLOT(emitContentsMoved()));
 844     view->setFocus();
 845 }
 846
 847 QAbstractItemView* DolphinView::itemView() const
 848 {
 849     if (m_detailsView != 0) {
 850         return m_detailsView;
 851     } else if (m_columnView != 0) {
 852         return m_columnView;
 853     }
 854
 855     return m_iconsView;
 856 }
 857
 858 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 859 {
 860     return index.isValid() && (index.column() == DolphinModel::Name);
 861 }
 862
 863 bool DolphinView::isCutItem(const KFileItem& item) const
 864 {
 865     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 866     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 867
 868     const KUrl& itemUrl = item.url();
 869     KUrl::List::const_iterator it = cutUrls.begin();
 870     const KUrl::List::const_iterator end = cutUrls.end();
 871     while (it != end) {
 872         if (*it == itemUrl) {
 873             return true;
 874         }
 875         ++it;
 876     }
 877
 878     return false;
 879 }
 880
 881 void DolphinView::applyCutItemEffect()
 882 {
 883     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 884     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 885         return;
 886     }
 887
 888     KFileItemList items(m_dirLister->items());
 889     KFileItemList::const_iterator it = items.begin();
 890     const KFileItemList::const_iterator end = items.end();
 891     while (it != end) {
 892         KFileItem* item = *it;
 893         if (isCutItem(*item)) {
 894             const QModelIndex index = m_dolphinModel->indexForItem(*item);
 895             // Huh? the item is already known
 896             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 897             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 898             if (value.type() == QVariant::Icon) {
 899                 const QIcon icon(qvariant_cast<QIcon>(value));
 900                 QPixmap pixmap = icon.pixmap(128, 128);
 901
 902                 // remember current pixmap for the item to be able
 903                 // to restore it when other items get cut
 904                 CutItem cutItem;
 905                 cutItem.url = item->url();
 906                 cutItem.pixmap = pixmap;
 907                 m_cutItemsCache.append(cutItem);
 908
 909                 // apply icon effect to the cut item
 910                 KIconEffect iconEffect;
 911                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 912                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 913             }
 914         }
 915         ++it;
 916     }
 917 }
 918
 919 void DolphinView::updateViewportColor()
 920 {
 921     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 922     if (m_active) {
 923         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 924         emit selectionChanged(selectedItems());
 925     } else {
 926         color.setAlpha(0);
 927     }
 928
 929     QWidget* viewport = itemView()->viewport();
 930     QPalette palette;
 931     palette.setColor(viewport->backgroundRole(), color);
 932     viewport->setPalette(palette);
 933 }
 934
 935 #include "dolphinview.moc"