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 {
  76     setFocusPolicy(Qt::StrongFocus);
  77     m_topLayout = new QVBoxLayout(this);
  78     m_topLayout->setSpacing(0);
  79     m_topLayout->setMargin(0);
  80
  81     QClipboard* clipboard = QApplication::clipboard();
  82     connect(clipboard, SIGNAL(dataChanged()),
  83             this, SLOT(updateCutItems()));
  84
  85     connect(m_dirLister, SIGNAL(completed()),
  86             this, SLOT(updateCutItems()));
  87     connect(m_dirLister, SIGNAL(newItems(const QList<KFileItem>&)),
  88             this, SLOT(generatePreviews(const QList<KFileItem>&)));
  89
  90     m_controller = new DolphinController(this);
  91     m_controller->setUrl(url);
  92     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  93             this, SIGNAL(urlChanged(const KUrl&)));
  94     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
  95             this, SLOT(openContextMenu(const QPoint&)));
  96     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)),
  97             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const QModelIndex&, QWidget*)));
  98     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
  99             this, SLOT(updateSorting(DolphinView::Sorting)));
 100     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 101             this, SLOT(updateSortOrder(Qt::SortOrder)));
 102     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 103             this, SLOT(triggerItem(const QModelIndex&)));
 104     connect(m_controller, SIGNAL(activated()),
 105             this, SLOT(activate()));
 106     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 107             this, SLOT(showHoverInformation(const QModelIndex&)));
 108     connect(m_controller, SIGNAL(viewportEntered()),
 109             this, SLOT(clearHoverInformation()));
 110
 111     applyViewProperties(url);
 112     m_topLayout->addWidget(itemView());
 113 }
 114
 115 DolphinView::~DolphinView()
 116 {
 117 }
 118
 119 const KUrl& DolphinView::url() const
 120 {
 121     return m_controller->url();
 122 }
 123
 124 KUrl DolphinView::rootUrl() const
 125 {
 126     return isColumnViewActive() ? m_dirLister->url() : url();
 127 }
 128
 129 void DolphinView::setActive(bool active)
 130 {
 131     if (active == m_active) {
 132         return;
 133     }
 134
 135     m_active = active;
 136
 137     updateViewportColor();
 138     update();
 139
 140     if (active) {
 141         emit activated();
 142     }
 143 }
 144
 145 bool DolphinView::isActive() const
 146 {
 147     return m_active;
 148 }
 149
 150 void DolphinView::setMode(Mode mode)
 151 {
 152     if (mode == m_mode) {
 153         return; // the wished mode is already set
 154     }
 155
 156     m_mode = mode;
 157
 158     if (isColumnViewActive()) {
 159         // When changing the mode in the column view, it makes sense
 160         // to go back to the root URL of the column view automatically.
 161         // Otherwise there it would not be possible to turn off the column view
 162         // without focusing the first column.
 163         setUrl(m_dirLister->url());
 164         m_controller->setUrl(m_dirLister->url());
 165     }
 166
 167     const KUrl viewPropsUrl = viewPropertiesUrl();
 168     ViewProperties props(viewPropsUrl);
 169     props.setViewMode(m_mode);
 170
 171     createView();
 172     startDirLister(viewPropsUrl);
 173
 174     emit modeChanged();
 175 }
 176
 177 DolphinView::Mode DolphinView::mode() const
 178 {
 179     return m_mode;
 180 }
 181
 182 void DolphinView::setShowPreview(bool show)
 183 {
 184     const KUrl viewPropsUrl = viewPropertiesUrl();
 185     ViewProperties props(viewPropsUrl);
 186     props.setShowPreview(show);
 187
 188     m_controller->setShowPreview(show);
 189     emit showPreviewChanged();
 190
 191     startDirLister(viewPropsUrl, true);
 192 }
 193
 194 bool DolphinView::showPreview() const
 195 {
 196     return m_controller->showPreview();
 197 }
 198
 199 void DolphinView::setShowHiddenFiles(bool show)
 200 {
 201     if (m_dirLister->showingDotFiles() == show) {
 202         return;
 203     }
 204
 205     const KUrl viewPropsUrl = viewPropertiesUrl();
 206     ViewProperties props(viewPropsUrl);
 207     props.setShowHiddenFiles(show);
 208
 209     m_dirLister->setShowingDotFiles(show);
 210     emit showHiddenFilesChanged();
 211
 212     startDirLister(viewPropsUrl, true);
 213 }
 214
 215 bool DolphinView::showHiddenFiles() const
 216 {
 217     return m_dirLister->showingDotFiles();
 218 }
 219
 220 void DolphinView::setCategorizedSorting(bool categorized)
 221 {
 222     if (categorized == categorizedSorting()) {
 223         return;
 224     }
 225
 226     if (!categorized && !supportsCategorizedSorting())
 227     {
 228         m_proxyModel->setCategorizedModel(categorized);
 229         m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 230
 231         emit categorizedSortingChanged();
 232
 233         return;
 234     }
 235
 236     Q_ASSERT(m_iconsView != 0);
 237
 238     ViewProperties props(viewPropertiesUrl());
 239     props.setCategorizedSorting(categorized);
 240     props.save();
 241
 242     m_proxyModel->setCategorizedModel(categorized);
 243     m_proxyModel->sort(m_proxyModel->sortColumn(), m_proxyModel->sortOrder());
 244
 245     emit categorizedSortingChanged();
 246 }
 247
 248 bool DolphinView::categorizedSorting() const
 249 {
 250     return m_proxyModel->isCategorizedModel();
 251 }
 252
 253 bool DolphinView::supportsCategorizedSorting() const
 254 {
 255     return m_iconsView != 0;
 256 }
 257
 258 void DolphinView::selectAll()
 259 {
 260     itemView()->selectAll();
 261 }
 262
 263 void DolphinView::invertSelection()
 264 {
 265     if (isColumnViewActive()) {
 266         // QAbstractItemView does not offer a virtual method invertSelection()
 267         // as counterpart to QAbstractItemView::selectAll(). This makes it
 268         // necessary to delegate the inverting of the selection to the
 269         // column view, as only the selection of the active column should get
 270         // inverted.
 271         m_columnView->invertSelection();
 272     } else {
 273         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 274         const QAbstractItemModel* itemModel = selectionModel->model();
 275
 276         const QModelIndex topLeft = itemModel->index(0, 0);
 277         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 278                                                          itemModel->columnCount() - 1);
 279
 280         const QItemSelection selection(topLeft, bottomRight);
 281         selectionModel->select(selection, QItemSelectionModel::Toggle);
 282     }
 283 }
 284
 285 bool DolphinView::hasSelection() const
 286 {
 287     return itemView()->selectionModel()->hasSelection();
 288 }
 289
 290 void DolphinView::clearSelection()
 291 {
 292     itemView()->selectionModel()->clear();
 293 }
 294
 295 QList<KFileItem> DolphinView::selectedItems() const
 296 {
 297     const QAbstractItemView* view = itemView();
 298
 299     // Our view has a selection, we will map them back to the DolphinModel
 300     // and then fill the KFileItemList.
 301     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 302
 303     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 304     QList<KFileItem> itemList;
 305
 306     const QModelIndexList indexList = selection.indexes();
 307     foreach (QModelIndex index, indexList) {
 308         KFileItem item = m_dolphinModel->itemForIndex(index);
 309         if (!item.isNull()) {
 310             itemList.append(item);
 311         }
 312     }
 313
 314     return itemList;
 315 }
 316
 317 KUrl::List DolphinView::selectedUrls() const
 318 {
 319     KUrl::List urls;
 320     const QList<KFileItem> list = selectedItems();
 321     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 322           it != end; ++it ) {
 323         urls.append((*it).url());
 324     }
 325     return urls;
 326 }
 327
 328 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 329 {
 330     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 331     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 332 }
 333
 334 void DolphinView::setContentsPosition(int x, int y)
 335 {
 336     QAbstractItemView* view = itemView();
 337
 338     // the ColumnView takes care itself for the horizontal scrolling
 339     if (!isColumnViewActive()) {
 340         view->horizontalScrollBar()->setValue(x);
 341     }
 342     view->verticalScrollBar()->setValue(y);
 343
 344     m_loadingDirectory = false;
 345 }
 346
 347 QPoint DolphinView::contentsPosition() const
 348 {
 349     const int x = itemView()->horizontalScrollBar()->value();
 350     const int y = itemView()->verticalScrollBar()->value();
 351     return QPoint(x, y);
 352 }
 353
 354 void DolphinView::zoomIn()
 355 {
 356     m_controller->triggerZoomIn();
 357 }
 358
 359 void DolphinView::zoomOut()
 360 {
 361     m_controller->triggerZoomOut();
 362 }
 363
 364 bool DolphinView::isZoomInPossible() const
 365 {
 366     return m_controller->isZoomInPossible();
 367 }
 368
 369 bool DolphinView::isZoomOutPossible() const
 370 {
 371     return m_controller->isZoomOutPossible();
 372 }
 373
 374 void DolphinView::setSorting(Sorting sorting)
 375 {
 376     if (sorting != this->sorting()) {
 377         updateSorting(sorting);
 378     }
 379 }
 380
 381 DolphinView::Sorting DolphinView::sorting() const
 382 {
 383     return m_proxyModel->sorting();
 384 }
 385
 386 void DolphinView::setSortOrder(Qt::SortOrder order)
 387 {
 388     if (sortOrder() != order) {
 389         updateSortOrder(order);
 390     }
 391 }
 392
 393 Qt::SortOrder DolphinView::sortOrder() const
 394 {
 395     return m_proxyModel->sortOrder();
 396 }
 397
 398 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 399 {
 400     const KUrl viewPropsUrl = viewPropertiesUrl();
 401     ViewProperties props(viewPropsUrl);
 402     props.setAdditionalInfo(info);
 403
 404     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 405     m_fileItemDelegate->setAdditionalInformation(info);
 406
 407     emit additionalInfoChanged(info);
 408     startDirLister(viewPropsUrl, true);
 409 }
 410
 411 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 412 {
 413     return m_fileItemDelegate->additionalInformation();
 414 }
 415
 416 void DolphinView::reload()
 417 {
 418     setUrl(url());
 419     startDirLister(url(), true);
 420 }
 421
 422 void DolphinView::refresh()
 423 {
 424     createView();
 425     applyViewProperties(m_controller->url());
 426     reload();
 427     updateViewportColor();
 428 }
 429
 430 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 431 {
 432     if (m_controller->url() == url) {
 433         return;
 434     }
 435
 436     const bool restoreColumnView =  !rootUrl.isEmpty()
 437                                     && !rootUrl.equals(url, KUrl::CompareWithoutTrailingSlash)
 438                                     && rootUrl.isParentOf(url);
 439
 440     m_controller->setUrl(url); // emits urlChanged, which we forward
 441
 442     if (restoreColumnView) {
 443         applyViewProperties(rootUrl);
 444         Q_ASSERT(itemView() == m_columnView);
 445         startDirLister(rootUrl);
 446         m_columnView->showColumn(url);
 447     } else {
 448         applyViewProperties(url);
 449         startDirLister(url);
 450     }
 451
 452     itemView()->setFocus();
 453
 454     emit startedPathLoading(url);
 455 }
 456
 457 void DolphinView::setUrl(const KUrl& url)
 458 {
 459     updateView(url, KUrl());
 460 }
 461
 462 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 463 {
 464     QWidget::mouseReleaseEvent(event);
 465     setActive(true);
 466 }
 467 void DolphinView::activate()
 468 {
 469     setActive(true);
 470 }
 471
 472 void DolphinView::triggerItem(const QModelIndex& index)
 473 {
 474     Q_ASSERT(index.isValid());
 475
 476     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 477     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 478         // items are selected by the user, hence don't trigger the
 479         // item specified by 'index'
 480         return;
 481     }
 482
 483     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 484
 485     if (item.isNull()) {
 486         return;
 487     }
 488
 489     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 490 }
 491
 492 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 493 {
 494     if (m_controller->showPreview()) {
 495         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 496         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 497                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 498     }
 499 }
 500
 501 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 502 {
 503     Q_ASSERT(!item.isNull());
 504     if (item.url().directory() != m_dirLister->url().path()) {
 505         // the preview job is still working on items of an older URL, hence
 506         // the item is not part of the directory model anymore
 507         return;
 508     }
 509
 510     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 511     if (idx.isValid() && (idx.column() == 0)) {
 512         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 513         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 514             KIconEffect iconEffect;
 515             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 516             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 517         } else {
 518             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 519         }
 520     }
 521 }
 522
 523 void DolphinView::emitSelectionChangedSignal()
 524 {
 525     emit selectionChanged(DolphinView::selectedItems());
 526 }
 527
 528 void DolphinView::startDirLister(const KUrl& url, bool reload)
 529 {
 530     if (!url.isValid()) {
 531         const QString location(url.pathOrUrl());
 532         if (location.isEmpty()) {
 533             emit errorMessage(i18nc("@info:status", "The location is empty."));
 534         } else {
 535             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 536         }
 537         return;
 538     }
 539
 540     m_cutItemsCache.clear();
 541     m_loadingDirectory = true;
 542
 543     m_dirLister->stop();
 544
 545     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 546     m_initializeColumnView = false;
 547
 548     if (keepOldDirs) {
 549         // keeping old directories is only necessary for hierarchical views
 550         // like the column view
 551         if (reload) {
 552             // for the column view it is not enough to reload the directory lister,
 553             // so this task is delegated to the column view directly
 554             m_columnView->reload();
 555         } else if (m_dirLister->directories().contains(url)) {
 556             // The dir lister contains the directory already, so
 557             // KDirLister::openUrl() may not get invoked twice.
 558             m_dirLister->updateDirectory(url);
 559         } else {
 560             const KUrl& dirListerUrl = m_dirLister->url();
 561             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 562                 // The current URL is not a child of the dir lister
 563                 // URL. This may happen when e. g. a place has been selected
 564                 // and hence the view must be reset.
 565                 m_dirLister->openUrl(url, false, false);
 566             }
 567         }
 568     } else {
 569         m_dirLister->openUrl(url, false, reload);
 570     }
 571 }
 572
 573 KUrl DolphinView::viewPropertiesUrl() const
 574 {
 575     if (isColumnViewActive()) {
 576         return m_dirLister->url();
 577     }
 578
 579     return url();
 580 }
 581
 582 void DolphinView::applyViewProperties(const KUrl& url)
 583 {
 584     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 585         // The column view is active, hence don't apply the view properties
 586         // of sub directories (represented by columns) to the view. The
 587         // view always represents the properties of the first column.
 588         return;
 589     }
 590
 591     const ViewProperties props(url);
 592
 593     const Mode mode = props.viewMode();
 594     if (m_mode != mode) {
 595         m_mode = mode;
 596         createView();
 597         emit modeChanged();
 598
 599         if (m_mode == ColumnView) {
 600             // The mode has been changed to the Column View. When starting the dir
 601             // lister with DolphinView::startDirLister() it is important to give a
 602             // hint that the dir lister may not keep the current directory
 603             // although this is the default for showing a hierarchy.
 604             m_initializeColumnView = true;
 605         }
 606     }
 607     if (itemView() == 0) {
 608         createView();
 609     }
 610     Q_ASSERT(itemView() != 0);
 611     Q_ASSERT(m_fileItemDelegate != 0);
 612
 613     const bool showHiddenFiles = props.showHiddenFiles();
 614     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 615         m_dirLister->setShowingDotFiles(showHiddenFiles);
 616         emit showHiddenFilesChanged();
 617     }
 618
 619     const bool categorized = props.categorizedSorting();
 620     if (categorized != categorizedSorting()) {
 621         m_proxyModel->setCategorizedModel(categorized);
 622         emit categorizedSortingChanged();
 623     }
 624
 625     const DolphinView::Sorting sorting = props.sorting();
 626     if (sorting != m_proxyModel->sorting()) {
 627         m_proxyModel->setSorting(sorting);
 628         emit sortingChanged(sorting);
 629     }
 630
 631     const Qt::SortOrder sortOrder = props.sortOrder();
 632     if (sortOrder != m_proxyModel->sortOrder()) {
 633         m_proxyModel->setSortOrder(sortOrder);
 634         emit sortOrderChanged(sortOrder);
 635     }
 636
 637     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 638     if (info != m_fileItemDelegate->additionalInformation()) {
 639         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 640         m_fileItemDelegate->setAdditionalInformation(info);
 641         emit additionalInfoChanged(info);
 642     }
 643
 644     const bool showPreview = props.showPreview();
 645     if (showPreview != m_controller->showPreview()) {
 646         m_controller->setShowPreview(showPreview);
 647         emit showPreviewChanged();
 648     }
 649 }
 650
 651 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 652 {
 653     clearSelection();
 654     if (selection.isEmpty()) {
 655         return;
 656     }
 657     const KUrl& baseUrl = url();
 658     KUrl url;
 659     QItemSelection new_selection;
 660     foreach(const KFileItem& item, selection) {
 661         url = item.url().upUrl();
 662         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 663             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 664             new_selection.select(index, index);
 665         }
 666     }
 667     itemView()->selectionModel()->select(new_selection,
 668                                          QItemSelectionModel::ClearAndSelect
 669                                          | QItemSelectionModel::Current);
 670 }
 671
 672 void DolphinView::openContextMenu(const QPoint& pos)
 673 {
 674     KFileItem item;
 675
 676     const QModelIndex index = itemView()->indexAt(pos);
 677     if (isValidNameIndex(index)) {
 678         item = fileItem(index);
 679     }
 680
 681     emit requestContextMenu(item, url());
 682 }
 683
 684 void DolphinView::dropUrls(const KUrl::List& urls,
 685                            const KUrl& destPath,
 686                            const QModelIndex& destIndex,
 687                            QWidget* source)
 688 {
 689     KFileItem directory;
 690     if (isValidNameIndex(destIndex)) {
 691         KFileItem item = fileItem(destIndex);
 692         Q_ASSERT(!item.isNull());
 693         if (item.isDir()) {
 694             // the URLs are dropped above a directory
 695             directory = item;
 696         }
 697     }
 698
 699     if ((directory.isNull()) && (source == itemView())) {
 700         // The dropping is done into the same viewport where
 701         // the dragging has been started. Just ignore this...
 702         return;
 703     }
 704
 705     const KUrl& destination = (directory.isNull()) ?
 706                               destPath : directory.url();
 707     dropUrls(urls, destination);
 708 }
 709
 710 void DolphinView::dropUrls(const KUrl::List& urls,
 711                            const KUrl& destination)
 712 {
 713     emit urlsDropped(urls, destination);
 714 }
 715
 716 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 717 {
 718     ViewProperties props(viewPropertiesUrl());
 719     props.setSorting(sorting);
 720
 721     m_proxyModel->setSorting(sorting);
 722
 723     emit sortingChanged(sorting);
 724 }
 725
 726 void DolphinView::updateSortOrder(Qt::SortOrder order)
 727 {
 728     ViewProperties props(viewPropertiesUrl());
 729     props.setSortOrder(order);
 730
 731     m_proxyModel->setSortOrder(order);
 732
 733     emit sortOrderChanged(order);
 734 }
 735
 736 void DolphinView::emitContentsMoved()
 737 {
 738     // only emit the contents moved signal if:
 739     // - no directory loading is ongoing (this would reset the contents position
 740     //   always to (0, 0))
 741     // - if the Column View is active: the column view does an automatic
 742     //   positioning during the loading operation, which must be remembered
 743     if (!m_loadingDirectory || isColumnViewActive()) {
 744         const QPoint pos(contentsPosition());
 745         emit contentsMoved(pos.x(), pos.y());
 746     }
 747 }
 748
 749 void DolphinView::updateCutItems()
 750 {
 751     // restore the icons of all previously selected items to the
 752     // original state...
 753     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 754     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 755     while (it != end) {
 756         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 757         if (index.isValid()) {
 758             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 759         }
 760         ++it;
 761     }
 762     m_cutItemsCache.clear();
 763
 764     // ... and apply an item effect to all currently cut items
 765     applyCutItemEffect();
 766 }
 767
 768 void DolphinView::showHoverInformation(const QModelIndex& index)
 769 {
 770     if (hasSelection()) {
 771         return;
 772     }
 773
 774     const KFileItem item = fileItem(index);
 775     if (!item.isNull()) {
 776         emit requestItemInfo(item);
 777     }
 778 }
 779
 780 void DolphinView::clearHoverInformation()
 781 {
 782     emit requestItemInfo(KFileItem());
 783 }
 784
 785
 786 void DolphinView::createView()
 787 {
 788     // delete current view
 789     QAbstractItemView* view = itemView();
 790     if (view != 0) {
 791         m_topLayout->removeWidget(view);
 792         view->close();
 793         view->deleteLater();
 794         view = 0;
 795         m_iconsView = 0;
 796         m_detailsView = 0;
 797         m_columnView = 0;
 798         m_fileItemDelegate = 0;
 799     }
 800
 801     Q_ASSERT(m_iconsView == 0);
 802     Q_ASSERT(m_detailsView == 0);
 803     Q_ASSERT(m_columnView == 0);
 804
 805     // ... and recreate it representing the current mode
 806     switch (m_mode) {
 807     case IconsView: {
 808         const KUrl viewPropsUrl = viewPropertiesUrl();
 809         const ViewProperties props(viewPropsUrl);
 810
 811         m_iconsView = new DolphinIconsView(this, m_controller);
 812         m_iconsView->setCategoryDrawer(new DolphinCategoryDrawer());
 813         view = m_iconsView;
 814         setCategorizedSorting(props.categorizedSorting());
 815         break;
 816     }
 817
 818     case DetailsView:
 819         m_detailsView = new DolphinDetailsView(this, m_controller);
 820         view = m_detailsView;
 821         setCategorizedSorting(false);
 822         break;
 823
 824     case ColumnView:
 825         m_columnView = new DolphinColumnView(this, m_controller);
 826         view = m_columnView;
 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"