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 #include <ktoggleaction.h>
  23 #include <kactioncollection.h>
  24
  25 #include <QApplication>
  26 #include <QClipboard>
  27 #include <QKeyEvent>
  28 #include <QItemSelection>
  29 #include <QBoxLayout>
  30 #include <QTimer>
  31 #include <QScrollBar>
  32
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kfileitemdelegate.h>
  36 #include <klocale.h>
  37 #include <kiconeffect.h>
  38 #include <kio/netaccess.h>
  39 #include <kio/renamedialog.h>
  40 #include <kio/previewjob.h>
  41 #include <kmimetyperesolver.h>
  42 #include <konqmimedata.h>
  43 #include <konq_operations.h>
  44 #include <kurl.h>
  45
  46 #include "dolphinmodel.h"
  47 #include "dolphincolumnview.h"
  48 #include "dolphincontroller.h"
  49 #include "dolphinsortfilterproxymodel.h"
  50 #include "dolphindetailsview.h"
  51 #include "dolphiniconsview.h"
  52 #include "renamedialog.h"
  53 #include "viewproperties.h"
  54 #include "dolphinsettings.h"
  55 #include "dolphin_generalsettings.h"
  56
  57 DolphinView::DolphinView(QWidget* parent,
  58                          const KUrl& url,
  59                          KDirLister* dirLister,
  60                          DolphinModel* dolphinModel,
  61                          DolphinSortFilterProxyModel* proxyModel) :
  62     QWidget(parent),
  63     m_active(true),
  64     m_loadingDirectory(false),
  65     m_storedCategorizedSorting(false),
  66     m_mode(DolphinView::IconsView),
  67     m_topLayout(0),
  68     m_controller(0),
  69     m_iconsView(0),
  70     m_detailsView(0),
  71     m_columnView(0),
  72     m_fileItemDelegate(0),
  73     m_dolphinModel(dolphinModel),
  74     m_dirLister(dirLister),
  75     m_proxyModel(proxyModel)
  76 {
  77     setFocusPolicy(Qt::StrongFocus);
  78     m_topLayout = new QVBoxLayout(this);
  79     m_topLayout->setSpacing(0);
  80     m_topLayout->setMargin(0);
  81
  82     QClipboard* clipboard = QApplication::clipboard();
  83     connect(clipboard, SIGNAL(dataChanged()),
  84             this, SLOT(updateCutItems()));
  85
  86     connect(m_dirLister, SIGNAL(completed()),
  87             this, SLOT(updateCutItems()));
  88     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
  89             this, SLOT(generatePreviews(const KFileItemList&)));
  90
  91     m_controller = new DolphinController(this);
  92     m_controller->setUrl(url);
  93
  94     // Receiver of the DolphinView signal 'urlChanged()' don't need
  95     // to care whether the internal controller changed the URL already or whether
  96     // the controller just requested an URL change and will be updated later.
  97     // In both cases the URL has been changed:
  98     connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
  99             this, SIGNAL(urlChanged(const KUrl&)));
 100     connect(m_controller, SIGNAL(requestUrlChange(const KUrl&)),
 101             this, SIGNAL(urlChanged(const KUrl&)));
 102
 103     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 104             this, SLOT(openContextMenu(const QPoint&)));
 105     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&, const KFileItem&, QWidget*)),
 106             this, SLOT(dropUrls(const KUrl::List&, const KUrl&, const KFileItem&, QWidget*)));
 107     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 108             this, SLOT(updateSorting(DolphinView::Sorting)));
 109     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 110             this, SLOT(updateSortOrder(Qt::SortOrder)));
 111     connect(m_controller, SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
 112             this, SLOT(updateAdditionalInfo(const KFileItemDelegate::InformationList&)));
 113     connect(m_controller, SIGNAL(itemTriggered(const KFileItem&)),
 114             this, SLOT(triggerItem(const KFileItem&)));
 115     connect(m_controller, SIGNAL(activated()),
 116             this, SLOT(activate()));
 117     connect(m_controller, SIGNAL(itemEntered(const KFileItem&)),
 118             this, SLOT(showHoverInformation(const KFileItem&)));
 119     connect(m_controller, SIGNAL(viewportEntered()),
 120             this, SLOT(clearHoverInformation()));
 121
 122     applyViewProperties(url);
 123     m_topLayout->addWidget(itemView());
 124 }
 125
 126 DolphinView::~DolphinView()
 127 {
 128 }
 129
 130 const KUrl& DolphinView::url() const
 131 {
 132     return m_controller->url();
 133 }
 134
 135 KUrl DolphinView::rootUrl() const
 136 {
 137     return isColumnViewActive() ? m_columnView->rootUrl() : url();
 138 }
 139
 140 void DolphinView::setActive(bool active)
 141 {
 142     if (active == m_active) {
 143         return;
 144     }
 145
 146     m_active = active;
 147
 148     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 149     if (active) {
 150         // TODO: emitting urlChanged() is a hack, as the URL hasn't really changed. It
 151         // bypasses the problem when having a split view and changing the active view to
 152         // update the some URL dependent states. A nicer approach should be no big deal...
 153         emit urlChanged(url());
 154         emit selectionChanged(selectedItems());
 155     } else {
 156         color.setAlpha(150);
 157     }
 158
 159     QWidget* viewport = itemView()->viewport();
 160     QPalette palette;
 161     palette.setColor(viewport->backgroundRole(), color);
 162     viewport->setPalette(palette);
 163
 164     update();
 165
 166     if (active) {
 167         emit activated();
 168     }
 169
 170     m_controller->indicateActivationChange(active);
 171 }
 172
 173 bool DolphinView::isActive() const
 174 {
 175     return m_active;
 176 }
 177
 178 void DolphinView::setMode(Mode mode)
 179 {
 180     if (mode == m_mode) {
 181         return; // the wished mode is already set
 182     }
 183
 184     m_mode = mode;
 185
 186     if (isColumnViewActive()) {
 187         // When changing the mode in the column view, it makes sense
 188         // to go back to the root URL of the column view automatically.
 189         // Otherwise there it would not be possible to turn off the column view
 190         // without focusing the first column.
 191         const KUrl root = rootUrl();
 192         setUrl(root);
 193         m_controller->setUrl(root);
 194     }
 195
 196     const KUrl viewPropsUrl = viewPropertiesUrl();
 197     ViewProperties props(viewPropsUrl);
 198     props.setViewMode(m_mode);
 199
 200     createView();
 201
 202     // the file item delegate has been recreated, apply the current
 203     // additional information manually
 204     const KFileItemDelegate::InformationList infoList = props.additionalInfo();
 205     m_fileItemDelegate->setShowInformation(infoList);
 206     emit additionalInfoChanged(infoList);
 207
 208     // Not all view modes support categorized sorting. Adjust the sorting model
 209     // if changing the view mode results in a change of the categorized sorting
 210     // capabilities.
 211     m_storedCategorizedSorting = props.categorizedSorting();
 212     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 213     if (categorized != m_proxyModel->isCategorizedModel()) {
 214         m_proxyModel->setCategorizedModel(categorized);
 215         emit categorizedSortingChanged();
 216     }
 217
 218     loadDirectory(viewPropsUrl);
 219
 220     emit modeChanged();
 221 }
 222
 223 DolphinView::Mode DolphinView::mode() const
 224 {
 225     return m_mode;
 226 }
 227
 228 void DolphinView::setShowPreview(bool show)
 229 {
 230     const KUrl viewPropsUrl = viewPropertiesUrl();
 231     ViewProperties props(viewPropsUrl);
 232     props.setShowPreview(show);
 233
 234     m_controller->setShowPreview(show);
 235     emit showPreviewChanged();
 236
 237     loadDirectory(viewPropsUrl, true);
 238 }
 239
 240 bool DolphinView::showPreview() const
 241 {
 242     return m_controller->showPreview();
 243 }
 244
 245 void DolphinView::setShowHiddenFiles(bool show)
 246 {
 247     if (m_dirLister->showingDotFiles() == show) {
 248         return;
 249     }
 250
 251     const KUrl viewPropsUrl = viewPropertiesUrl();
 252     ViewProperties props(viewPropsUrl);
 253     props.setShowHiddenFiles(show);
 254
 255     m_dirLister->setShowingDotFiles(show);
 256     m_controller->setShowHiddenFiles(show);
 257     emit showHiddenFilesChanged();
 258
 259     loadDirectory(viewPropsUrl, true);
 260 }
 261
 262 bool DolphinView::showHiddenFiles() const
 263 {
 264     return m_dirLister->showingDotFiles();
 265 }
 266
 267 void DolphinView::setCategorizedSorting(bool categorized)
 268 {
 269     if (categorized == categorizedSorting()) {
 270         return;
 271     }
 272
 273     // setCategorizedSorting(true) may only get invoked
 274     // if the view supports categorized sorting
 275     Q_ASSERT(!categorized || supportsCategorizedSorting());
 276
 277     ViewProperties props(viewPropertiesUrl());
 278     props.setCategorizedSorting(categorized);
 279     props.save();
 280
 281     m_storedCategorizedSorting = categorized;
 282     m_proxyModel->setCategorizedModel(categorized);
 283
 284     emit categorizedSortingChanged();
 285 }
 286
 287 bool DolphinView::categorizedSorting() const
 288 {
 289     // If all view modes would support categorized sorting, returning
 290     // m_proxyModel->isCategorizedModel() would be the way to go. As
 291     // currently only the icons view supports caterized sorting, we remember
 292     // the stored view properties state in m_storedCategorizedSorting and
 293     // return this state. The application takes care to disable the corresponding
 294     // checkbox by checking DolphinView::supportsCategorizedSorting() to indicate
 295     // that this setting is not applied to the current view mode.
 296     return m_storedCategorizedSorting;
 297 }
 298
 299 bool DolphinView::supportsCategorizedSorting() const
 300 {
 301     return m_iconsView != 0;
 302 }
 303
 304 void DolphinView::selectAll()
 305 {
 306     itemView()->selectAll();
 307 }
 308
 309 void DolphinView::invertSelection()
 310 {
 311     if (isColumnViewActive()) {
 312         // QAbstractItemView does not offer a virtual method invertSelection()
 313         // as counterpart to QAbstractItemView::selectAll(). This makes it
 314         // necessary to delegate the inverting of the selection to the
 315         // column view, as only the selection of the active column should
 316         // get inverted.
 317         m_columnView->invertSelection();
 318     } else {
 319         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 320         const QAbstractItemModel* itemModel = selectionModel->model();
 321
 322         const QModelIndex topLeft = itemModel->index(0, 0);
 323         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 324                                                          itemModel->columnCount() - 1);
 325
 326         const QItemSelection selection(topLeft, bottomRight);
 327         selectionModel->select(selection, QItemSelectionModel::Toggle);
 328     }
 329 }
 330
 331 bool DolphinView::hasSelection() const
 332 {
 333     return itemView()->selectionModel()->hasSelection();
 334 }
 335
 336 void DolphinView::clearSelection()
 337 {
 338     itemView()->selectionModel()->clear();
 339 }
 340
 341 KFileItemList DolphinView::selectedItems() const
 342 {
 343     const QAbstractItemView* view = itemView();
 344
 345     // Our view has a selection, we will map them back to the DolphinModel
 346     // and then fill the KFileItemList.
 347     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 348
 349     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 350     KFileItemList itemList;
 351
 352     const QModelIndexList indexList = selection.indexes();
 353     foreach (QModelIndex index, indexList) {
 354         KFileItem item = m_dolphinModel->itemForIndex(index);
 355         if (!item.isNull()) {
 356             itemList.append(item);
 357         }
 358     }
 359
 360     return itemList;
 361 }
 362
 363 KUrl::List DolphinView::selectedUrls() const
 364 {
 365     KUrl::List urls;
 366     const KFileItemList list = selectedItems();
 367     foreach (KFileItem item, list) {
 368         urls.append(item.url());
 369     }
 370     return urls;
 371 }
 372
 373 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 374 {
 375     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 376     return m_dolphinModel->itemForIndex(dolphinModelIndex);
 377 }
 378
 379 void DolphinView::setContentsPosition(int x, int y)
 380 {
 381     QAbstractItemView* view = itemView();
 382
 383     // the ColumnView takes care itself for the horizontal scrolling
 384     if (!isColumnViewActive()) {
 385         view->horizontalScrollBar()->setValue(x);
 386     }
 387     view->verticalScrollBar()->setValue(y);
 388
 389     m_loadingDirectory = false;
 390 }
 391
 392 QPoint DolphinView::contentsPosition() const
 393 {
 394     const int x = itemView()->horizontalScrollBar()->value();
 395     const int y = itemView()->verticalScrollBar()->value();
 396     return QPoint(x, y);
 397 }
 398
 399 void DolphinView::zoomIn()
 400 {
 401     m_controller->triggerZoomIn();
 402 }
 403
 404 void DolphinView::zoomOut()
 405 {
 406     m_controller->triggerZoomOut();
 407 }
 408
 409 bool DolphinView::isZoomInPossible() const
 410 {
 411     return m_controller->isZoomInPossible();
 412 }
 413
 414 bool DolphinView::isZoomOutPossible() const
 415 {
 416     return m_controller->isZoomOutPossible();
 417 }
 418
 419 void DolphinView::setSorting(Sorting sorting)
 420 {
 421     if (sorting != this->sorting()) {
 422         updateSorting(sorting);
 423     }
 424 }
 425
 426 DolphinView::Sorting DolphinView::sorting() const
 427 {
 428     return m_proxyModel->sorting();
 429 }
 430
 431 void DolphinView::setSortOrder(Qt::SortOrder order)
 432 {
 433     if (sortOrder() != order) {
 434         updateSortOrder(order);
 435     }
 436 }
 437
 438 Qt::SortOrder DolphinView::sortOrder() const
 439 {
 440     return m_proxyModel->sortOrder();
 441 }
 442
 443 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 444 {
 445     const KUrl viewPropsUrl = viewPropertiesUrl();
 446     ViewProperties props(viewPropsUrl);
 447     props.setAdditionalInfo(info);
 448     m_fileItemDelegate->setShowInformation(info);
 449
 450     emit additionalInfoChanged(info);
 451
 452     if (itemView() != m_detailsView) {
 453         // the details view requires no reloading of the directory, as it maps
 454         // the file item delegate info to its columns internally
 455         loadDirectory(viewPropsUrl, true);
 456     }
 457 }
 458
 459 KFileItemDelegate::InformationList DolphinView::additionalInfo() const
 460 {
 461     return m_fileItemDelegate->showInformation();
 462 }
 463
 464 void DolphinView::reload()
 465 {
 466     setUrl(url());
 467     loadDirectory(url(), true);
 468 }
 469
 470 void DolphinView::refresh()
 471 {
 472     const bool oldActivationState = m_active;
 473     m_active = true;
 474
 475     createView();
 476     applyViewProperties(m_controller->url());
 477     reload();
 478
 479     setActive(oldActivationState);
 480 }
 481
 482 void DolphinView::updateView(const KUrl& url, const KUrl& rootUrl)
 483 {
 484     if (m_controller->url() == url) {
 485         return;
 486     }
 487
 488     m_controller->setUrl(url); // emits urlChanged, which we forward
 489
 490     if (!rootUrl.isEmpty() && rootUrl.isParentOf(url)) {
 491         applyViewProperties(rootUrl);
 492         loadDirectory(rootUrl);
 493         if (itemView() == m_columnView) {
 494             m_columnView->setRootUrl(rootUrl);
 495             m_columnView->showColumn(url);
 496         }
 497     } else {
 498         applyViewProperties(url);
 499         loadDirectory(url);
 500     }
 501
 502     emit startedPathLoading(url);
 503 }
 504
 505 void DolphinView::setNameFilter(const QString& nameFilter)
 506 {
 507     m_proxyModel->setFilterRegExp(nameFilter);
 508
 509     if (isColumnViewActive()) {
 510         // adjusting the directory lister is not enough in the case of the
 511         // column view, as each column has its own directory lister internally...
 512         m_columnView->setNameFilter(nameFilter);
 513     }
 514 }
 515
 516 void DolphinView::calculateItemCount(int& fileCount, int& folderCount)
 517 {
 518     foreach (KFileItem item, m_dirLister->items()) {
 519         if (item.isDir()) {
 520             ++folderCount;
 521         } else {
 522             ++fileCount;
 523         }
 524     }
 525 }
 526
 527 void DolphinView::setUrl(const KUrl& url)
 528 {
 529     updateView(url, KUrl());
 530 }
 531
 532 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 533 {
 534     QWidget::mouseReleaseEvent(event);
 535     setActive(true);
 536 }
 537 void DolphinView::activate()
 538 {
 539     setActive(true);
 540 }
 541
 542 void DolphinView::triggerItem(const KFileItem& item)
 543 {
 544     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 545     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 546         // items are selected by the user, hence don't trigger the
 547         // item specified by 'index'
 548         return;
 549     }
 550
 551     if (item.isNull()) {
 552         return;
 553     }
 554
 555     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 556 }
 557
 558 void DolphinView::generatePreviews(const KFileItemList& items)
 559 {
 560     if (m_controller->showPreview()) {
 561         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 562         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 563                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 564     }
 565 }
 566
 567 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 568 {
 569     Q_ASSERT(!item.isNull());
 570     if (item.url().directory() != m_dirLister->url().path()) {
 571         // the preview job is still working on items of an older URL, hence
 572         // the item is not part of the directory model anymore
 573         return;
 574     }
 575
 576     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 577     if (idx.isValid() && (idx.column() == 0)) {
 578         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 579         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 580             KIconEffect iconEffect;
 581             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 582             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 583         } else {
 584             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 585         }
 586     }
 587 }
 588
 589 void DolphinView::emitSelectionChangedSignal()
 590 {
 591     emit selectionChanged(DolphinView::selectedItems());
 592 }
 593
 594 void DolphinView::loadDirectory(const KUrl& url, bool reload)
 595 {
 596     if (!url.isValid()) {
 597         const QString location(url.pathOrUrl());
 598         if (location.isEmpty()) {
 599             emit errorMessage(i18nc("@info:status", "The location is empty."));
 600         } else {
 601             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 602         }
 603         return;
 604     }
 605
 606     m_cutItemsCache.clear();
 607     m_loadingDirectory = true;
 608
 609     m_dirLister->stop();
 610     m_dirLister->openUrl(url, reload ? KDirLister::Reload : KDirLister::NoFlags);
 611
 612     if (isColumnViewActive()) {
 613         // adjusting the directory lister is not enough in the case of the
 614         // column view, as each column has its own directory lister internally...
 615         if (reload) {
 616             m_columnView->reload();
 617         } else {
 618             m_columnView->showColumn(url);
 619         }
 620     }
 621 }
 622
 623 KUrl DolphinView::viewPropertiesUrl() const
 624 {
 625     if (isColumnViewActive()) {
 626         return m_dirLister->url();
 627     }
 628
 629     return url();
 630 }
 631
 632 void DolphinView::applyViewProperties(const KUrl& url)
 633 {
 634     if (isColumnViewActive() && rootUrl().isParentOf(url)) {
 635         // The column view is active, hence don't apply the view properties
 636         // of sub directories (represented by columns) to the view. The
 637         // view always represents the properties of the first column.
 638         return;
 639     }
 640
 641     const ViewProperties props(url);
 642
 643     const Mode mode = props.viewMode();
 644     if (m_mode != mode) {
 645         m_mode = mode;
 646         createView();
 647         emit modeChanged();
 648     }
 649     if (itemView() == 0) {
 650         createView();
 651     }
 652     Q_ASSERT(itemView() != 0);
 653     Q_ASSERT(m_fileItemDelegate != 0);
 654
 655     const bool showHiddenFiles = props.showHiddenFiles();
 656     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 657         m_dirLister->setShowingDotFiles(showHiddenFiles);
 658         m_controller->setShowHiddenFiles(showHiddenFiles);
 659         emit showHiddenFilesChanged();
 660     }
 661
 662     m_storedCategorizedSorting = props.categorizedSorting();
 663     const bool categorized = m_storedCategorizedSorting && supportsCategorizedSorting();
 664     if (categorized != m_proxyModel->isCategorizedModel()) {
 665         m_proxyModel->setCategorizedModel(categorized);
 666         emit categorizedSortingChanged();
 667     }
 668
 669     const DolphinView::Sorting sorting = props.sorting();
 670     if (sorting != m_proxyModel->sorting()) {
 671         m_proxyModel->setSorting(sorting);
 672         emit sortingChanged(sorting);
 673     }
 674
 675     const Qt::SortOrder sortOrder = props.sortOrder();
 676     if (sortOrder != m_proxyModel->sortOrder()) {
 677         m_proxyModel->setSortOrder(sortOrder);
 678         emit sortOrderChanged(sortOrder);
 679     }
 680
 681     KFileItemDelegate::InformationList info = props.additionalInfo();
 682     if (info != m_fileItemDelegate->showInformation()) {
 683         m_fileItemDelegate->setShowInformation(info);
 684         emit additionalInfoChanged(info);
 685     }
 686
 687     const bool showPreview = props.showPreview();
 688     if (showPreview != m_controller->showPreview()) {
 689         m_controller->setShowPreview(showPreview);
 690         emit showPreviewChanged();
 691     }
 692 }
 693
 694 void DolphinView::changeSelection(const KFileItemList& selection)
 695 {
 696     clearSelection();
 697     if (selection.isEmpty()) {
 698         return;
 699     }
 700     const KUrl& baseUrl = url();
 701     KUrl url;
 702     QItemSelection new_selection;
 703     foreach(const KFileItem& item, selection) {
 704         url = item.url().upUrl();
 705         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 706             QModelIndex index = m_proxyModel->mapFromSource(m_dolphinModel->indexForItem(item));
 707             new_selection.select(index, index);
 708         }
 709     }
 710     itemView()->selectionModel()->select(new_selection,
 711                                          QItemSelectionModel::ClearAndSelect
 712                                          | QItemSelectionModel::Current);
 713 }
 714
 715 void DolphinView::openContextMenu(const QPoint& pos)
 716 {
 717     KFileItem item;
 718
 719     const QModelIndex index = itemView()->indexAt(pos);
 720     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 721         item = fileItem(index);
 722     }
 723
 724     emit requestContextMenu(item, url());
 725 }
 726
 727 void DolphinView::dropUrls(const KUrl::List& urls,
 728                            const KUrl& destPath,
 729                            const KFileItem& destItem,
 730                            QWidget* source)
 731 {
 732     bool dropAboveDir = false;
 733     if (!destItem.isNull()) {
 734         dropAboveDir = destItem.isDir();
 735         if (!dropAboveDir) {
 736             // the dropping is done above a file
 737             return;
 738         }
 739     } else if (source == itemView()) {
 740         // the dropping is done into the same viewport where the dragging
 741         // has been started
 742         return;
 743     }
 744
 745     const KUrl& destination = dropAboveDir ? destItem.url() : destPath;
 746     dropUrls(urls, destination);
 747 }
 748
 749 void DolphinView::dropUrls(const KUrl::List& urls,
 750                            const KUrl& destination)
 751 {
 752     emit urlsDropped(urls, destination);
 753 }
 754
 755 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 756 {
 757     ViewProperties props(viewPropertiesUrl());
 758     props.setSorting(sorting);
 759
 760     m_proxyModel->setSorting(sorting);
 761
 762     emit sortingChanged(sorting);
 763 }
 764
 765 void DolphinView::updateSortOrder(Qt::SortOrder order)
 766 {
 767     ViewProperties props(viewPropertiesUrl());
 768     props.setSortOrder(order);
 769
 770     m_proxyModel->setSortOrder(order);
 771
 772     emit sortOrderChanged(order);
 773 }
 774
 775 void DolphinView::updateAdditionalInfo(const KFileItemDelegate::InformationList& info)
 776 {
 777     ViewProperties props(viewPropertiesUrl());
 778     props.setAdditionalInfo(info);
 779
 780     m_fileItemDelegate->setShowInformation(info);
 781
 782     emit additionalInfoChanged(info);
 783
 784 }
 785
 786 void DolphinView::emitContentsMoved()
 787 {
 788     // only emit the contents moved signal if:
 789     // - no directory loading is ongoing (this would reset the contents position
 790     //   always to (0, 0))
 791     // - if the Column View is active: the column view does an automatic
 792     //   positioning during the loading operation, which must be remembered
 793     if (!m_loadingDirectory || isColumnViewActive()) {
 794         const QPoint pos(contentsPosition());
 795         emit contentsMoved(pos.x(), pos.y());
 796     }
 797 }
 798
 799 void DolphinView::updateCutItems()
 800 {
 801     // restore the icons of all previously selected items to the
 802     // original state...
 803     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 804     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 805     while (it != end) {
 806         const QModelIndex index = m_dolphinModel->indexForUrl((*it).url);
 807         if (index.isValid()) {
 808             m_dolphinModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 809         }
 810         ++it;
 811     }
 812     m_cutItemsCache.clear();
 813
 814     // ... and apply an item effect to all currently cut items
 815     applyCutItemEffect();
 816 }
 817
 818 void DolphinView::showHoverInformation(const KFileItem& item)
 819 {
 820     if (hasSelection()) {
 821         return;
 822     }
 823
 824     emit requestItemInfo(item);
 825 }
 826
 827 void DolphinView::clearHoverInformation()
 828 {
 829     emit requestItemInfo(KFileItem());
 830 }
 831
 832
 833 void DolphinView::createView()
 834 {
 835     // delete current view
 836     QAbstractItemView* view = itemView();
 837     if (view != 0) {
 838         m_topLayout->removeWidget(view);
 839         view->close();
 840         view->deleteLater();
 841         view = 0;
 842         m_iconsView = 0;
 843         m_detailsView = 0;
 844         m_columnView = 0;
 845         m_fileItemDelegate = 0;
 846     }
 847
 848     Q_ASSERT(m_iconsView == 0);
 849     Q_ASSERT(m_detailsView == 0);
 850     Q_ASSERT(m_columnView == 0);
 851
 852     // ... and recreate it representing the current mode
 853     switch (m_mode) {
 854     case IconsView: {
 855         m_iconsView = new DolphinIconsView(this, m_controller);
 856         view = m_iconsView;
 857         break;
 858     }
 859
 860     case DetailsView:
 861         m_detailsView = new DolphinDetailsView(this, m_controller);
 862         view = m_detailsView;
 863         break;
 864
 865     case ColumnView:
 866         m_columnView = new DolphinColumnView(this, m_controller);
 867         view = m_columnView;
 868         break;
 869     }
 870
 871     Q_ASSERT(view != 0);
 872
 873     m_fileItemDelegate = new KFileItemDelegate(view);
 874     view->setItemDelegate(m_fileItemDelegate);
 875
 876     view->setModel(m_proxyModel);
 877     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 878
 879     new KMimeTypeResolver(view, m_dolphinModel);
 880     m_topLayout->insertWidget(1, view);
 881
 882     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 883             this, SLOT(emitSelectionChangedSignal()));
 884     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 885             this, SLOT(emitContentsMoved()));
 886     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 887             this, SLOT(emitContentsMoved()));
 888 }
 889
 890 QAbstractItemView* DolphinView::itemView() const
 891 {
 892     if (m_detailsView != 0) {
 893         return m_detailsView;
 894     } else if (m_columnView != 0) {
 895         return m_columnView;
 896     }
 897
 898     return m_iconsView;
 899 }
 900
 901 bool DolphinView::isCutItem(const KFileItem& item) const
 902 {
 903     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 904     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 905
 906     const KUrl& itemUrl = item.url();
 907     KUrl::List::const_iterator it = cutUrls.begin();
 908     const KUrl::List::const_iterator end = cutUrls.end();
 909     while (it != end) {
 910         if (*it == itemUrl) {
 911             return true;
 912         }
 913         ++it;
 914     }
 915
 916     return false;
 917 }
 918
 919 void DolphinView::applyCutItemEffect()
 920 {
 921     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 922     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 923         return;
 924     }
 925
 926     KFileItemList items(m_dirLister->items());
 927     KFileItemList::const_iterator it = items.begin();
 928     const KFileItemList::const_iterator end = items.end();
 929     while (it != end) {
 930         const KFileItem item = *it;
 931         if (isCutItem(item)) {
 932             const QModelIndex index = m_dolphinModel->indexForItem(item);
 933             const QVariant value = m_dolphinModel->data(index, Qt::DecorationRole);
 934             if (value.type() == QVariant::Icon) {
 935                 const QIcon icon(qvariant_cast<QIcon>(value));
 936                 QPixmap pixmap = icon.pixmap(128, 128);
 937
 938                 // remember current pixmap for the item to be able
 939                 // to restore it when other items get cut
 940                 CutItem cutItem;
 941                 cutItem.url = item.url();
 942                 cutItem.pixmap = pixmap;
 943                 m_cutItemsCache.append(cutItem);
 944
 945                 // apply icon effect to the cut item
 946                 KIconEffect iconEffect;
 947                 pixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 948                 m_dolphinModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 949             }
 950         }
 951         ++it;
 952     }
 953 }
 954
 955 KToggleAction* DolphinView::iconsModeAction(KActionCollection* actionCollection)
 956 {
 957     KToggleAction* iconsView = actionCollection->add<KToggleAction>("icons");
 958     iconsView->setText(i18nc("@action:inmenu View Mode", "Icons"));
 959     iconsView->setShortcut(Qt::CTRL | Qt::Key_1);
 960     iconsView->setIcon(KIcon("fileview-icon"));
 961     iconsView->setData(QVariant::fromValue(IconsView));
 962     return iconsView;
 963 }
 964
 965 KToggleAction* DolphinView::detailsModeAction(KActionCollection* actionCollection)
 966 {
 967     KToggleAction* detailsView = actionCollection->add<KToggleAction>("details");
 968     detailsView->setText(i18nc("@action:inmenu View Mode", "Details"));
 969     detailsView->setShortcut(Qt::CTRL | Qt::Key_2);
 970     detailsView->setIcon(KIcon("fileview-detailed"));
 971     detailsView->setData(QVariant::fromValue(DetailsView));
 972     return detailsView;
 973 }
 974
 975 KToggleAction* DolphinView::columnsModeAction(KActionCollection* actionCollection)
 976 {
 977     KToggleAction* columnView = actionCollection->add<KToggleAction>("columns");
 978     columnView->setText(i18nc("@action:inmenu View Mode", "Columns"));
 979     columnView->setShortcut(Qt::CTRL | Qt::Key_3);
 980     columnView->setIcon(KIcon("fileview-column"));
 981     columnView->setData(QVariant::fromValue(ColumnView));
 982     return columnView;
 983 }
 984
 985 QString DolphinView::currentViewModeActionName() const
 986 {
 987     switch (m_mode) {
 988     case DolphinView::IconsView:
 989         return "icons";
 990     case DolphinView::DetailsView:
 991         return "details";
 992     case DolphinView::ColumnView:
 993         return "columns";
 994     }
 995     return QString(); // can't happen
 996 }
 997
 998 #include "dolphinview.moc"