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     startDirLister(viewPropsUrl);
 172
 173     emit modeChanged();
 174 }
 175
 176 DolphinView::Mode DolphinView::mode() const
 177 {
 178     return m_mode;
 179 }
 180
 181 void DolphinView::setShowPreview(bool show)
 182 {
 183     const KUrl viewPropsUrl = viewPropertiesUrl();
 184     ViewProperties props(viewPropsUrl);
 185     props.setShowPreview(show);
 186
 187     m_controller->setShowPreview(show);
 188     emit showPreviewChanged();
 189
 190     startDirLister(viewPropsUrl, true);
 191 }
 192
 193 bool DolphinView::showPreview() const
 194 {
 195     return m_controller->showPreview();
 196 }
 197
 198 void DolphinView::setShowHiddenFiles(bool show)
 199 {
 200     if (m_dirLister->showingDotFiles() == show) {
 201         return;
 202     }
 203
 204     const KUrl viewPropsUrl = viewPropertiesUrl();
 205     ViewProperties props(viewPropsUrl);
 206     props.setShowHiddenFiles(show);
 207
 208     m_dirLister->setShowingDotFiles(show);
 209     emit showHiddenFilesChanged();
 210
 211     startDirLister(viewPropsUrl, true);
 212 }
 213
 214 bool DolphinView::showHiddenFiles() const
 215 {
 216     return m_dirLister->showingDotFiles();
 217 }
 218
 219 void DolphinView::setCategorizedSorting(bool categorized)
 220 {
 221     if (categorized == categorizedSorting()) {
 222         return;
 223     }
 224
 225     if (!categorized && !supportsCategorizedSorting())
 226     {
 227         m_proxyModel->setCategorizedModel(categorized);
 228         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 229
 230         emit categorizedSortingChanged();
 231
 232         return;
 233     }
 234
 235     Q_ASSERT(m_iconsView != 0);
 236
 237     ViewProperties props(viewPropertiesUrl());
 238     props.setCategorizedSorting(categorized);
 239     props.save();
 240
 241     m_proxyModel->setCategorizedModel(categorized);
 242     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 243
 244     emit categorizedSortingChanged();
 245 }
 246
 247 bool DolphinView::categorizedSorting() const
 248 {
 249     return m_proxyModel->isCategorizedModel();
 250 }
 251
 252 bool DolphinView::supportsCategorizedSorting() const
 253 {
 254     return m_iconsView != 0;
 255 }
 256
 257 void DolphinView::selectAll()
 258 {
 259     itemView()->selectAll();
 260 }
 261
 262 void DolphinView::invertSelection()
 263 {
 264     if (isColumnViewActive()) {
 265         // QAbstractItemView does not offer a virtual method invertSelection()
 266         // as counterpart to QAbstractItemView::selectAll(). This makes it
 267         // necessary to delegate the inverting of the selection to the
 268         // column view, as only the selection of the active column should get
 269         // inverted.
 270         m_columnView->invertSelection();
 271     } else {
 272         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 273         const QAbstractItemModel* itemModel = selectionModel->model();
 274
 275         const QModelIndex topLeft = itemModel->index(0, 0);
 276         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 277                                                          itemModel->columnCount() - 1);
 278
 279         const QItemSelection selection(topLeft, bottomRight);
 280         selectionModel->select(selection, QItemSelectionModel::Toggle);
 281     }
 282 }
 283
 284 bool DolphinView::hasSelection() const
 285 {
 286     return itemView()->selectionModel()->hasSelection();
 287 }
 288
 289 void DolphinView::clearSelection()
 290 {
 291     itemView()->selectionModel()->clear();
 292 }
 293
 294 QList<KFileItem> DolphinView::selectedItems() const
 295 {
 296     const QAbstractItemView* view = itemView();
 297
 298     // Our view has a selection, we will map them back to the DolphinModel
 299     // and then fill the KFileItemList.
 300     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 301
 302     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 303     QList<KFileItem> itemList;
 304
 305     const QModelIndexList indexList = selection.indexes();
 306     foreach (QModelIndex index, indexList) {
 307         KFileItem item = m_dolphinModel->itemForIndex(index);
 308         if (!item.isNull()) {
 309             itemList.append(item);
 310         }
 311     }
 312
 313     return itemList;
 314 }
 315
 316 KUrl::List DolphinView::selectedUrls() const
 317 {
 318     KUrl::List urls;
 319     const QList<KFileItem> list = selectedItems();
 320     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 321           it != end; ++it ) {
 322         urls.append((*it).url());
 323     }
 324     return urls;
 325 }
 326
 327 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 328 {
 329     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 330     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 331 }
 332
 333 void DolphinView::setContentsPosition(int x, int y)
 334 {
 335     QAbstractItemView* view = itemView();
 336
 337     // the ColumnView takes care itself for the horizontal scrolling
 338     if (!isColumnViewActive()) {
 339         view->horizontalScrollBar()->setValue(x);
 340     }
 341     view->verticalScrollBar()->setValue(y);
 342
 343     m_loadingDirectory = false;
 344 }
 345
 346 QPoint DolphinView::contentsPosition() const
 347 {
 348     const int x = itemView()->horizontalScrollBar()->value();
 349     const int y = itemView()->verticalScrollBar()->value();
 350     return QPoint(x, y);
 351 }
 352
 353 void DolphinView::zoomIn()
 354 {
 355     m_controller->triggerZoomIn();
 356 }
 357
 358 void DolphinView::zoomOut()
 359 {
 360     m_controller->triggerZoomOut();
 361 }
 362
 363 bool DolphinView::isZoomInPossible() const
 364 {
 365     return m_controller->isZoomInPossible();
 366 }
 367
 368 bool DolphinView::isZoomOutPossible() const
 369 {
 370     return m_controller->isZoomOutPossible();
 371 }
 372
 373 void DolphinView::setSorting(Sorting sorting)
 374 {
 375     if (sorting != this->sorting()) {
 376         updateSorting(sorting);
 377     }
 378 }
 379
 380 DolphinView::Sorting DolphinView::sorting() const
 381 {
 382     return m_proxyModel->sorting();
 383 }
 384
 385 void DolphinView::setSortOrder(Qt::SortOrder order)
 386 {
 387     if (sortOrder() != order) {
 388         updateSortOrder(order);
 389     }
 390 }
 391
 392 Qt::SortOrder DolphinView::sortOrder() const
 393 {
 394     return m_proxyModel->sortOrder();
 395 }
 396
 397 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 398 {
 399     const KUrl viewPropsUrl = viewPropertiesUrl();
 400     ViewProperties props(viewPropsUrl);
 401     props.setAdditionalInfo(info);
 402
 403     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 404     m_fileItemDelegate->setAdditionalInformation(info);
 405
 406     emit additionalInfoChanged(info);
 407     startDirLister(viewPropsUrl, true);
 408 }
 409
 410 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 411 {
 412     return m_fileItemDelegate->additionalInformation();
 413 }
 414
 415 void DolphinView::reload()
 416 {
 417     setUrl(url());
 418     startDirLister(url(), true);
 419 }
 420
 421 void DolphinView::refresh()
 422 {
 423     createView();
 424     applyViewProperties(m_controller->url());
 425     reload();
 426     updateViewportColor();
 427 }
 428
 429 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 430 {
 431     if (m_controller->url() == url) {
 432         return;
 433     }
 434
 435     const bool restoreColumnView =  !rootUrl.isEmpty()
 436                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 437                                     && rootUrl.isParentOf(url);
 438
 439     m_controller->setUrl(url); // emits urlChanged, which we forward
 440
 441     if (restoreColumnView) {
 442         applyViewProperties(rootUrl);
 443         Q_ASSERT(itemView() == m_columnView);
 444         startDirLister(rootUrl);
 445         m_columnView->showColumn(url);
 446     } else {
 447         applyViewProperties(url);
 448         startDirLister(url);
 449     }
 450
 451     itemView()->setFocus();
 452
 453     emit startedPathLoading(url);
 454 }
 455
 456 void DolphinView::setUrl(const KUrl& url)
 457 {
 458     updateView(url, KUrl());
 459 }
 460
 461 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 462 {
 463     QWidget::mouseReleaseEvent(event);
 464     setActive(true);
 465 }
 466 void DolphinView::activate()
 467 {
 468     setActive(true);
 469 }
 470
 471 void DolphinView::triggerItem(const QModelIndex& index)
 472 {
 473     Q_ASSERT(index.isValid());
 474
 475     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 476     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 477         // items are selected by the user, hence don't trigger the
 478         // item specified by 'index'
 479         return;
 480     }
 481
 482     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 483
 484     if (item.isNull()) {
 485         return;
 486     }
 487
 488     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 489 }
 490
 491 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 492 {
 493     if (m_controller->showPreview()) {
 494         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 495         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 496                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 497     }
 498 }
 499
 500 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 501 {
 502     Q_ASSERT(!item.isNull());
 503     if (item.url().directory() != m_dirLister->url().path()) {
 504         // the preview job is still working on items of an older URL, hence
 505         // the item is not part of the directory model anymore
 506         return;
 507     }
 508
 509     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 510     if (idx.isValid() && (idx.column() == 0)) {
 511         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 512         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 513             KIconEffect iconEffect;
 514             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 515             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 516         } else {
 517             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 518         }
 519     }
 520 }
 521
 522 void DolphinView::emitSelectionChangedSignal()
 523 {
 524     emit selectionChanged(DolphinView::selectedItems());
 525 }
 526
 527 void DolphinView::startDirLister(const KUrl& url, bool reload)
 528 {
 529     if (!url.isValid()) {
 530         const QString location(url.pathOrUrl());
 531         if (location.isEmpty()) {
 532             emit errorMessage(i18nc("@info:status", "The location is empty."));
 533         } else {
 534             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 535         }
 536         return;
 537     }
 538
 539     m_cutItemsCache.clear();
 540     m_loadingDirectory = true;
 541
 542     m_dirLister->stop();
 543
 544     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 545     m_initializeColumnView = false;
 546
 547     if (keepOldDirs) {
 548         // keeping old directories is only necessary for hierarchical views
 549         // like the column view
 550         if (reload) {
 551             // for the column view it is not enough to reload the directory lister,
 552             // so this task is delegated to the column view directly
 553             m_columnView->reload();
 554         } else if (m_dirLister->directories().contains(url)) {
 555             // The dir lister contains the directory already, so
 556             // KDirLister::openUrl() may not get invoked twice.
 557             m_dirLister->updateDirectory(url);
 558         } else {
 559             const KUrl& dirListerUrl = m_dirLister->url();
 560             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 561                 // The current URL is not a child of the dir lister
 562                 // URL. This may happen when e. g. a place has been selected
 563                 // and hence the view must be reset.
 564                 m_dirLister->openUrl(url, false, false);
 565             }
 566         }
 567     } else {
 568         m_dirLister->openUrl(url, false, reload);
 569     }
 570 }
 571
 572 KUrl DolphinView::viewPropertiesUrl() const
 573 {
 574     if (isColumnViewActive()) {
 575         return m_dirLister->url();
 576     }
 577
 578     return url();
 579 }
 580
 581 void DolphinView::applyViewProperties(const KUrl& url)
 582 {
 583     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 584         // The column view is active, hence don't apply the view properties
 585         // of sub directories (represented by columns) to the view. The
 586         // view always represents the properties of the first column.
 587         return;
 588     }
 589
 590     const ViewProperties props(url);
 591
 592     const Mode mode = props.viewMode();
 593     if (m_mode != mode) {
 594         m_mode = mode;
 595         createView();
 596         emit modeChanged();
 597
 598         if (m_mode == ColumnView) {
 599             // The mode has been changed to the Column View. When starting the dir
 600             // lister with DolphinView::startDirLister() it is important to give a
 601             // hint that the dir lister may not keep the current directory
 602             // although this is the default for showing a hierarchy.
 603             m_initializeColumnView = true;
 604         }
 605     }
 606     if (itemView() == 0) {
 607         createView();
 608     }
 609     Q_ASSERT(itemView() != 0);
 610     Q_ASSERT(m_fileItemDelegate != 0);
 611
 612     const bool showHiddenFiles = props.showHiddenFiles();
 613     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 614         m_dirLister->setShowingDotFiles(showHiddenFiles);
 615         emit showHiddenFilesChanged();
 616     }
 617
 618     const bool categorized = props.categorizedSorting();
 619     if (categorized != categorizedSorting()) {
 620         m_proxyModel->setCategorizedModel(categorized);
 621         emit categorizedSortingChanged();
 622     }
 623
 624     const DolphinView::Sorting sorting = props.sorting();
 625     if (sorting != m_proxyModel->sorting()) {
 626         m_proxyModel->setSorting(sorting);
 627         emit sortingChanged(sorting);
 628     }
 629
 630     const Qt::SortOrder sortOrder = props.sortOrder();
 631     if (sortOrder != m_proxyModel->sortOrder()) {
 632         m_proxyModel->setSortOrder(sortOrder);
 633         emit sortOrderChanged(sortOrder);
 634     }
 635
 636     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 637     if (info != m_fileItemDelegate->additionalInformation()) {
 638         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 639         m_fileItemDelegate->setAdditionalInformation(info);
 640         emit additionalInfoChanged(info);
 641     }
 642
 643     const bool showPreview = props.showPreview();
 644     if (showPreview != m_controller->showPreview()) {
 645         m_controller->setShowPreview(showPreview);
 646         emit showPreviewChanged();
 647     }
 648 }
 649
 650 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 651 {
 652     clearSelection();
 653     if (selection.isEmpty()) {
 654         return;
 655     }
 656     const KUrl& baseUrl = url();
 657     KUrl url;
 658     QItemSelection new_selection;
 659     foreach(const KFileItem& item, selection) {
 660         url = item.url().upUrl();
 661         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 662             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 663             new_selection.select(index, index);
 664         }
 665     }
 666     itemView()->selectionModel()->select(new_selection,
 667                                          QItemSelectionModel::ClearAndSelect
 668                                          | QItemSelectionModel::Current);
 669 }
 670
 671 void DolphinView::openContextMenu(const QPoint& pos)
 672 {
 673     KFileItem item;
 674
 675     const QModelIndex index = itemView()->indexAt(pos);
 676     if (isValidNameIndex(index)) {
 677         item = fileItem(index);
 678     }
 679
 680     emit requestContextMenu(item, url());
 681 }
 682
 683 void DolphinView::dropUrls(const KUrl::List& urls,
 684                            const KUrl& destPath,
 685                            const QModelIndex& destIndex,
 686                            QWidget* source)
 687 {
 688     KFileItem directory;
 689     if (isValidNameIndex(destIndex)) {
 690         KFileItem item = fileItem(destIndex);
 691         Q_ASSERT(!item.isNull());
 692         if (item.isDir()) {
 693             // the URLs are dropped above a directory
 694             directory = item;
 695         }
 696     }
 697
 698     if ((directory.isNull()) && (source == itemView())) {
 699         // The dropping is done into the same viewport where
 700         // the dragging has been started. Just ignore this...
 701         return;
 702     }
 703
 704     const KUrl& destination = (directory.isNull()) ?
 705                               destPath : directory.url();
 706     dropUrls(urls, destination);
 707 }
 708
 709 void DolphinView::dropUrls(const KUrl::List& urls,
 710                            const KUrl& destination)
 711 {
 712     emit urlsDropped(urls, destination);
 713 }
 714
 715 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 716 {
 717     ViewProperties props(viewPropertiesUrl());
 718     props.setSorting(sorting);
 719
 720     m_proxyModel->setSorting(sorting);
 721
 722     emit sortingChanged(sorting);
 723 }
 724
 725 void DolphinView::updateSortOrder(Qt::SortOrder order)
 726 {
 727     ViewProperties props(viewPropertiesUrl());
 728     props.setSortOrder(order);
 729
 730     m_proxyModel->setSortOrder(order);
 731
 732     emit sortOrderChanged(order);
 733 }
 734
 735 void DolphinView::emitContentsMoved()
 736 {
 737     // only emit the contents moved signal if:
 738     // - no directory loading is ongoing (this would reset the contents position
 739     //   always to (0, 0))
 740     // - if the Column View is active: the column view does an automatic
 741     //   positioning during the loading operation, which must be remembered
 742     if (!m_loadingDirectory || isColumnViewActive()) {
 743         const QPoint pos(contentsPosition());
 744         emit contentsMoved(pos.x(), pos.y());
 745     }
 746 }
 747
 748 void DolphinView::updateCutItems()
 749 {
 750     // restore the icons of all previously selected items to the
 751     // original state...
 752     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 753     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 754     while (it != end) {
 755         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 756         if (index.isValid()) {
 757             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 758         }
 759         ++it;
 760     }
 761     m_cutItemsCache.clear();
 762
 763     // ... and apply an item effect to all currently cut items
 764     applyCutItemEffect();
 765 }
 766
 767 void DolphinView::showHoverInformation(const QModelIndex& index)
 768 {
 769     if (hasSelection()) {
 770         return;
 771     }
 772
 773     const KFileItem item = fileItem(index);
 774     if (!item.isNull()) {
 775         emit requestItemInfo(item);
 776     }
 777 }
 778
 779 void DolphinView::clearHoverInformation()
 780 {
 781     emit requestItemInfo(KFileItem());
 782 }
 783
 784
 785 void DolphinView::createView()
 786 {
 787     // delete current view
 788     QAbstractItemView* view = itemView();
 789     if (view != 0) {
 790         m_topLayout->removeWidget(view);
 791         view->close();
 792         view->deleteLater();
 793         view = 0;
 794         m_iconsView = 0;
 795         m_detailsView = 0;
 796         m_columnView = 0;
 797         m_fileItemDelegate = 0;
 798     }
 799
 800     Q_ASSERT(m_iconsView == 0);
 801     Q_ASSERT(m_detailsView == 0);
 802     Q_ASSERT(m_columnView == 0);
 803
 804     // ... and recreate it representing the current mode
 805     switch (m_mode) {
 806     case IconsView: {
 807         m_iconsView = new DolphinIconsView(this, m_controller);
 808         view = m_iconsView;
 809         break;
 810     }
 811
 812     case DetailsView:
 813         m_detailsView = new DolphinDetailsView(this, m_controller);
 814         view = m_detailsView;
 815
 816         // categorized sorting is not supported yet for the details
 817         // view, even if the view properties indicate this
 818         setCategorizedSorting(false);
 819         break;
 820
 821     case ColumnView:
 822         m_columnView = new DolphinColumnView(this, m_controller);
 823         view = m_columnView;
 824
 825         // categorized sorting is not supported yet for the column
 826         // view, even if the view properties indicate this
 827         setCategorizedSorting(false);
 828         break;
 829     }
 830
 831     Q_ASSERT(view != 0);
 832
 833     m_fileItemDelegate = new KFileItemDelegate(view);
 834     view->setItemDelegate(m_fileItemDelegate);
 835
 836     view->setModel(m_proxyModel);
 837     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 838
 839     new KMimeTypeResolver(view, m_dolphinModel);
 840     m_topLayout->insertWidget(1, view);
 841
 842     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 843             this, SLOT(emitSelectionChangedSignal()));
 844     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 845             this, SLOT(emitContentsMoved()));
 846     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 847             this, SLOT(emitContentsMoved()));
 848     view->setFocus();
 849 }
 850
 851 QAbstractItemView* DolphinView::itemView() const
 852 {
 853     if (m_detailsView != 0) {
 854         return m_detailsView;
 855     } else if (m_columnView != 0) {
 856         return m_columnView;
 857     }
 858
 859     return m_iconsView;
 860 }
 861
 862 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 863 {
 864     return index.isValid() && (index.column() == DolphinModel::Name);
 865 }
 866
 867 bool DolphinView::isCutItem(const KFileItem& item) const
 868 {
 869     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 870     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 871
 872     const KUrl& itemUrl = item.url();
 873     KUrl::List::const_iterator it = cutUrls.begin();
 874     const KUrl::List::const_iterator end = cutUrls.end();
 875     while (it != end) {
 876         if (*it == itemUrl) {
 877             return true;
 878         }
 879         ++it;
 880     }
 881
 882     return false;
 883 }
 884
 885 void DolphinView::applyCutItemEffect()
 886 {
 887     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 888     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 889         return;
 890     }
 891
 892     KFileItemList items(m_dirLister->items());
 893     KFileItemList::const_iterator it = items.begin();
 894     const KFileItemList::const_iterator end = items.end();
 895     while (it != end) {
 896         KFileItem* item = *it;
 897         if (isCutItem(*item)) {
 898             const QModelIndex index = m_dolphinModel->indexForItem(*item);
 899             // Huh? the item is already known
 900             //const KFileItem item = m_dolphinModel->itemForIndex(index);
 901             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 902             if (value.type() == QVariant::Icon) {
 903                 const QIcon icon(qvariant_cast<QIcon>(value));
 904                 QPixmap pixmap = icon.pixmap(128, 128);
 905
 906                 // remember current pixmap for the item to be able
 907                 // to restore it when other items get cut
 908                 CutItem cutItem;
 909                 cutItem.url = item->url();
 910                 cutItem.pixmap = pixmap;
 911                 m_cutItemsCache.append(cutItem);
 912
 913                 // apply icon effect to the cut item
 914                 KIconEffect iconEffect;
 915                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 916                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 917             }
 918         }
 919         ++it;
 920     }
 921 }
 922
 923 void DolphinView::updateViewportColor()
 924 {
 925     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 926     if (m_active) {
 927         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 928         emit selectionChanged(selectedItems());
 929     } else {
 930         color.setAlpha(0);
 931     }
 932
 933     QWidget* viewport = itemView()->viewport();
 934     QPalette palette;
 935     palette.setColor(viewport->backgroundRole(), color);
 936     viewport->setPalette(palette);
 937 }
 938
 939 #include "dolphinview.moc"