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 <kdirmodel.h>
  33 #include <kdirlister.h>
  34 #include <kfileitemdelegate.h>
  35 #include <klocale.h>
  36 #include <kiconeffect.h>
  37 #include <kio/netaccess.h>
  38 #include <kio/renamedialog.h>
  39 #include <kio/previewjob.h>
  40 #include <kmimetyperesolver.h>
  41 #include <konqmimedata.h>
  42 #include <konq_operations.h>
  43 #include <kurl.h>
  44
  45 #include "dolphincolumnview.h"
  46 #include "dolphincontroller.h"
  47 #include "dolphinsortfilterproxymodel.h"
  48 #include "dolphindetailsview.h"
  49 #include "dolphiniconsview.h"
  50 #include "dolphinitemcategorizer.h"
  51 #include "renamedialog.h"
  52 #include "viewproperties.h"
  53 #include "dolphinsettings.h"
  54 #include "dolphin_generalsettings.h"
  55
  56 DolphinView::DolphinView(QWidget* parent,
  57                          const KUrl& url,
  58                          KDirLister* dirLister,
  59                          KDirModel* dirModel,
  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_dirModel(dirModel),
  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 QModelIndex&, QWidget*)),
  97             this, SLOT(dropUrls(const KUrl::List&, 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 (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 223         return;
 224     }
 225
 226     Q_ASSERT(m_iconsView != 0);
 227     if (categorized) {
 228         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 229         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 230     } else {
 231         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 232         m_iconsView->setItemCategorizer(0);
 233         delete categorizer;
 234     }
 235
 236     ViewProperties props(viewPropertiesUrl());
 237     props.setCategorizedSorting(categorized);
 238     props.save();
 239
 240     emit categorizedSortingChanged();
 241 }
 242
 243 bool DolphinView::categorizedSorting() const
 244 {
 245     if (!supportsCategorizedSorting()) {
 246         return false;
 247     }
 248
 249     Q_ASSERT(m_iconsView != 0);
 250     return m_iconsView->itemCategorizer() != 0;
 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         // In opposite to QAbstractItemView::selectAll() there is no virtual method
 267         // for adjusting the invertion of a selection. As the generic approach by using
 268         // the selection model does not work for the column view, we delegate this task:
 269         m_columnView->invertSelection();
 270     } else {
 271         QItemSelectionModel* selectionModel = itemView()->selectionModel();
 272         const QAbstractItemModel* itemModel = selectionModel->model();
 273
 274         const QModelIndex topLeft = itemModel->index(0, 0);
 275         const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
 276                                                          itemModel->columnCount() - 1);
 277
 278         QItemSelection selection(topLeft, bottomRight);
 279         selectionModel->select(selection, QItemSelectionModel::Toggle);
 280     }
 281 }
 282
 283 bool DolphinView::hasSelection() const
 284 {
 285     return itemView()->selectionModel()->hasSelection();
 286 }
 287
 288 void DolphinView::clearSelection()
 289 {
 290     itemView()->selectionModel()->clear();
 291 }
 292
 293 QList<KFileItem> DolphinView::selectedItems() const
 294 {
 295     const QAbstractItemView* view = itemView();
 296
 297     // Our view has a selection, we will map them back to the DirModel
 298     // and then fill the KFileItemList.
 299     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 300
 301     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 302     QList<KFileItem> itemList;
 303
 304     const QModelIndexList indexList = selection.indexes();
 305     foreach (QModelIndex index, indexList) {
 306         KFileItem item = m_dirModel->itemForIndex(index);
 307         if (!item.isNull()) {
 308             itemList.append(item);
 309         }
 310     }
 311
 312     return itemList;
 313 }
 314
 315 KUrl::List DolphinView::selectedUrls() const
 316 {
 317     KUrl::List urls;
 318     const QList<KFileItem> list = selectedItems();
 319     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 320           it != end; ++it ) {
 321         urls.append((*it).url());
 322     }
 323     return urls;
 324 }
 325
 326 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 327 {
 328     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 329     return m_dirModel->itemForIndex(dirModelIndex);
 330 }
 331
 332 void DolphinView::setContentsPosition(int x, int y)
 333 {
 334     QAbstractItemView* view = itemView();
 335     view->horizontalScrollBar()->setValue(x);
 336     view->verticalScrollBar()->setValue(y);
 337
 338     m_loadingDirectory = false;
 339 }
 340
 341 QPoint DolphinView::contentsPosition() const
 342 {
 343     const int x = itemView()->horizontalScrollBar()->value();
 344     const int y = itemView()->verticalScrollBar()->value();
 345     return QPoint(x, y);
 346 }
 347
 348 void DolphinView::zoomIn()
 349 {
 350     m_controller->triggerZoomIn();
 351 }
 352
 353 void DolphinView::zoomOut()
 354 {
 355     m_controller->triggerZoomOut();
 356 }
 357
 358 bool DolphinView::isZoomInPossible() const
 359 {
 360     return m_controller->isZoomInPossible();
 361 }
 362
 363 bool DolphinView::isZoomOutPossible() const
 364 {
 365     return m_controller->isZoomOutPossible();
 366 }
 367
 368 void DolphinView::setSorting(Sorting sorting)
 369 {
 370     if (sorting != this->sorting()) {
 371         updateSorting(sorting);
 372     }
 373 }
 374
 375 DolphinView::Sorting DolphinView::sorting() const
 376 {
 377     return m_proxyModel->sorting();
 378 }
 379
 380 void DolphinView::setSortOrder(Qt::SortOrder order)
 381 {
 382     if (sortOrder() != order) {
 383         updateSortOrder(order);
 384     }
 385 }
 386
 387 Qt::SortOrder DolphinView::sortOrder() const
 388 {
 389     return m_proxyModel->sortOrder();
 390 }
 391
 392 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 393 {
 394     const KUrl viewPropsUrl = viewPropertiesUrl();
 395     ViewProperties props(viewPropsUrl);
 396     props.setAdditionalInfo(info);
 397
 398     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 399     m_fileItemDelegate->setAdditionalInformation(info);
 400
 401     emit additionalInfoChanged(info);
 402     startDirLister(viewPropsUrl, true);
 403 }
 404
 405 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 406 {
 407     return m_fileItemDelegate->additionalInformation();
 408 }
 409
 410 void DolphinView::reload()
 411 {
 412     setUrl(url());
 413     startDirLister(url(), true);
 414 }
 415
 416 void DolphinView::refresh()
 417 {
 418     createView();
 419     applyViewProperties(m_controller->url());
 420     reload();
 421     updateViewportColor();
 422 }
 423
 424 void DolphinView::setUrl(const KUrl& url)
 425 {
 426     if (m_controller->url() == url) {
 427         return;
 428     }
 429
 430     m_controller->setUrl(url); // emits urlChanged, which we forward
 431
 432     applyViewProperties(url);
 433
 434     startDirLister(url);
 435     itemView()->setFocus();
 436 }
 437
 438 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 439 {
 440     QWidget::mouseReleaseEvent(event);
 441     setActive(true);;
 442 }
 443 void DolphinView::activate()
 444 {
 445     setActive(true);
 446 }
 447
 448 void DolphinView::triggerItem(const QModelIndex& index)
 449 {
 450     Q_ASSERT(index.isValid());
 451
 452     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 453     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 454         // items are selected by the user, hence don't trigger the
 455         // item specified by 'index'
 456         return;
 457     }
 458
 459     const KFileItem item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 460     if (item.isNull()) {
 461         return;
 462     }
 463
 464     emit itemTriggered(item); // caught by DolphinViewContainer or DolphinPart
 465 }
 466
 467 void DolphinView::generatePreviews(const QList<KFileItem>& items)
 468 {
 469     if (m_controller->showPreview()) {
 470         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 471         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 472                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 473     }
 474 }
 475
 476 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 477 {
 478     Q_ASSERT(!item.isNull());
 479     if (item.url().directory() != m_dirLister->url().path()) {
 480         // the preview job is still working on items of an older URL, hence
 481         // the item is not part of the directory model anymore
 482         return;
 483     }
 484
 485     const QModelIndex idx = m_dirModel->indexForItem(item);
 486     if (idx.isValid() && (idx.column() == 0)) {
 487         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 488         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 489             KIconEffect iconEffect;
 490             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 491             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 492         } else {
 493             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 494         }
 495     }
 496 }
 497
 498 void DolphinView::emitSelectionChangedSignal()
 499 {
 500     emit selectionChanged(DolphinView::selectedItems());
 501 }
 502
 503 void DolphinView::startDirLister(const KUrl& url, bool reload)
 504 {
 505     if (!url.isValid()) {
 506         const QString location(url.pathOrUrl());
 507         if (location.isEmpty()) {
 508             emit errorMessage(i18nc("@info:status", "The location is empty."));
 509         } else {
 510             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 511         }
 512         return;
 513     }
 514
 515     m_cutItemsCache.clear();
 516     m_loadingDirectory = true;
 517
 518     m_dirLister->stop();
 519
 520     bool openDir = true;
 521     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 522     m_initializeColumnView = false;
 523
 524     if (keepOldDirs) {
 525         if (reload) {
 526             keepOldDirs = false;
 527
 528             const KUrl& dirListerUrl = m_dirLister->url();
 529             if (dirListerUrl.isValid()) {
 530                 const KUrl::List dirs = m_dirLister->directories();
 531                 KUrl url;
 532                 foreach(url, dirs) {
 533                     m_dirLister->updateDirectory(url);
 534                 }
 535                 openDir = false;
 536             }
 537         } else if (m_dirLister->directories().contains(url)) {
 538             // The dir lister contains the directory already, so
 539             // KDirLister::openUrl() may not been invoked twice.
 540             m_dirLister->updateDirectory(url);
 541             openDir = false;
 542         } else {
 543             const KUrl& dirListerUrl = m_dirLister->url();
 544             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 545                 // The current URL is not a child of the dir lister
 546                 // URL. This may happen when e. g. a place has been selected
 547                 // and hence the view must be reset.
 548                 keepOldDirs = false;
 549             }
 550         }
 551     }
 552
 553     if (openDir) {
 554         m_dirLister->openUrl(url, keepOldDirs, reload);
 555     }
 556 }
 557
 558 KUrl DolphinView::viewPropertiesUrl() const
 559 {
 560     if (isColumnViewActive()) {
 561         return m_dirLister->url();
 562     }
 563
 564     return url();
 565 }
 566
 567 void DolphinView::applyViewProperties(const KUrl& url)
 568 {
 569     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 570         // The column view is active, hence don't apply the view properties
 571         // of sub directories (represented by columns) to the view. The
 572         // view always represents the properties of the first column.
 573         return;
 574     }
 575
 576     const ViewProperties props(url);
 577
 578     const Mode mode = props.viewMode();
 579     if (m_mode != mode) {
 580         m_mode = mode;
 581         createView();
 582         emit modeChanged();
 583
 584         if (m_mode == ColumnView) {
 585             // The mode has been changed to the Column View. When starting the dir
 586             // lister with DolphinView::startDirLister() it is important to give a
 587             // hint that the dir lister may not keep the current directory
 588             // although this is the default for showing a hierarchy.
 589             m_initializeColumnView = true;
 590         }
 591     }
 592     if (itemView() == 0) {
 593         createView();
 594     }
 595     Q_ASSERT(itemView() != 0);
 596     Q_ASSERT(m_fileItemDelegate != 0);
 597
 598     const bool showHiddenFiles = props.showHiddenFiles();
 599     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 600         m_dirLister->setShowingDotFiles(showHiddenFiles);
 601         emit showHiddenFilesChanged();
 602     }
 603
 604     const bool categorized = props.categorizedSorting();
 605     if (categorized != categorizedSorting()) {
 606         if (supportsCategorizedSorting()) {
 607             Q_ASSERT(m_iconsView != 0);
 608             if (categorized) {
 609                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 610                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 611             } else {
 612                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 613                 m_iconsView->setItemCategorizer(0);
 614                 delete categorizer;
 615             }
 616         }
 617         emit categorizedSortingChanged();
 618     }
 619
 620     const DolphinView::Sorting sorting = props.sorting();
 621     if (sorting != m_proxyModel->sorting()) {
 622         m_proxyModel->setSorting(sorting);
 623         emit sortingChanged(sorting);
 624     }
 625
 626     const Qt::SortOrder sortOrder = props.sortOrder();
 627     if (sortOrder != m_proxyModel->sortOrder()) {
 628         m_proxyModel->setSortOrder(sortOrder);
 629         emit sortOrderChanged(sortOrder);
 630     }
 631
 632     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 633     if (info != m_fileItemDelegate->additionalInformation()) {
 634         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 635         m_fileItemDelegate->setAdditionalInformation(info);
 636         emit additionalInfoChanged(info);
 637     }
 638
 639     const bool showPreview = props.showPreview();
 640     if (showPreview != m_controller->showPreview()) {
 641         m_controller->setShowPreview(showPreview);
 642         emit showPreviewChanged();
 643     }
 644 }
 645
 646 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 647 {
 648     clearSelection();
 649     if (selection.isEmpty()) {
 650         return;
 651     }
 652     const KUrl& baseUrl = url();
 653     KUrl url;
 654     QItemSelection new_selection;
 655     foreach(const KFileItem& item, selection) {
 656         url = item.url().upUrl();
 657         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 658             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(item));
 659             new_selection.select(index, index);
 660         }
 661     }
 662     itemView()->selectionModel()->select(new_selection,
 663                                          QItemSelectionModel::ClearAndSelect
 664                                          | QItemSelectionModel::Current);
 665 }
 666
 667 void DolphinView::openContextMenu(const QPoint& pos)
 668 {
 669     KFileItem item;
 670
 671     const QModelIndex index = itemView()->indexAt(pos);
 672     if (isValidNameIndex(index)) {
 673         item = fileItem(index);
 674     }
 675
 676     emit requestContextMenu(item, url());
 677 }
 678
 679 void DolphinView::dropUrls(const KUrl::List& urls,
 680                            const QModelIndex& index,
 681                            QWidget* source)
 682 {
 683     KFileItem directory;
 684     if (isValidNameIndex(index)) {
 685         KFileItem item = fileItem(index);
 686         Q_ASSERT(!item.isNull());
 687         if (item.isDir()) {
 688             // the URLs are dropped above a directory
 689             directory = item;
 690         }
 691     }
 692
 693     if ((directory.isNull()) && (source == itemView())) {
 694         // The dropping is done into the same viewport where
 695         // the dragging has been started. Just ignore this...
 696         return;
 697     }
 698
 699     const KUrl& destination = (directory.isNull()) ?
 700                               url() : directory.url();
 701     dropUrls(urls, destination);
 702 }
 703
 704 void DolphinView::dropUrls(const KUrl::List& urls,
 705                            const KUrl& destination)
 706 {
 707     emit urlsDropped(urls, destination);
 708 }
 709
 710 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 711 {
 712     ViewProperties props(viewPropertiesUrl());
 713     props.setSorting(sorting);
 714
 715     m_proxyModel->setSorting(sorting);
 716
 717     emit sortingChanged(sorting);
 718 }
 719
 720 void DolphinView::updateSortOrder(Qt::SortOrder order)
 721 {
 722     ViewProperties props(viewPropertiesUrl());
 723     props.setSortOrder(order);
 724
 725     m_proxyModel->setSortOrder(order);
 726
 727     emit sortOrderChanged(order);
 728 }
 729
 730 void DolphinView::emitContentsMoved()
 731 {
 732     // only emit the contents moved signal if:
 733     // - no directory loading is ongoing (this would reset the contents position
 734     //   always to (0, 0))
 735     // - if the Column View is active: the column view does an automatic
 736     //   positioning during the loading operation, which must be remembered
 737     if (!m_loadingDirectory || isColumnViewActive()) {
 738         const QPoint pos(contentsPosition());
 739         emit contentsMoved(pos.x(), pos.y());
 740     }
 741 }
 742
 743 void DolphinView::updateCutItems()
 744 {
 745     // restore the icons of all previously selected items to the
 746     // original state...
 747     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 748     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 749     while (it != end) {
 750         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 751         if (index.isValid()) {
 752             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 753         }
 754         ++it;
 755     }
 756     m_cutItemsCache.clear();
 757
 758     // ... and apply an item effect to all currently cut items
 759     applyCutItemEffect();
 760 }
 761
 762 void DolphinView::showHoverInformation(const QModelIndex& index)
 763 {
 764     if (hasSelection()) {
 765         return;
 766     }
 767
 768     const KFileItem item = fileItem(index);
 769     if (!item.isNull()) {
 770         emit requestItemInfo(item);
 771     }
 772 }
 773
 774 void DolphinView::clearHoverInformation()
 775 {
 776     emit requestItemInfo(KFileItem());
 777 }
 778
 779
 780 void DolphinView::createView()
 781 {
 782     // delete current view
 783     QAbstractItemView* view = itemView();
 784     if (view != 0) {
 785         m_topLayout->removeWidget(view);
 786         view->close();
 787         if (view == m_iconsView) {
 788             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 789             m_iconsView->setItemCategorizer(0);
 790             delete categorizer;
 791         }
 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     case DetailsView:
 812         m_detailsView = new DolphinDetailsView(this, m_controller);
 813         view = m_detailsView;
 814         break;
 815
 816     case ColumnView:
 817         m_columnView = new DolphinColumnView(this, m_controller);
 818         view = m_columnView;
 819         break;
 820     }
 821
 822     Q_ASSERT(view != 0);
 823
 824     m_fileItemDelegate = new KFileItemDelegate(view);
 825     view->setItemDelegate(m_fileItemDelegate);
 826
 827     view->setModel(m_proxyModel);
 828     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 829
 830     new KMimeTypeResolver(view, m_dirModel);
 831     m_topLayout->insertWidget(1, view);
 832
 833     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 834             this, SLOT(emitSelectionChangedSignal()));
 835     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 836             this, SLOT(emitContentsMoved()));
 837     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 838             this, SLOT(emitContentsMoved()));
 839     view->setFocus();
 840 }
 841
 842 QAbstractItemView* DolphinView::itemView() const
 843 {
 844     if (m_detailsView != 0) {
 845         return m_detailsView;
 846     } else if (m_columnView != 0) {
 847         return m_columnView;
 848     }
 849
 850     return m_iconsView;
 851 }
 852
 853 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 854 {
 855     return index.isValid() && (index.column() == KDirModel::Name);
 856 }
 857
 858 bool DolphinView::isCutItem(const KFileItem& item) const
 859 {
 860     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 861     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 862
 863     const KUrl& itemUrl = item.url();
 864     KUrl::List::const_iterator it = cutUrls.begin();
 865     const KUrl::List::const_iterator end = cutUrls.end();
 866     while (it != end) {
 867         if (*it == itemUrl) {
 868             return true;
 869         }
 870         ++it;
 871     }
 872
 873     return false;
 874 }
 875
 876 void DolphinView::applyCutItemEffect()
 877 {
 878     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 879     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 880         return;
 881     }
 882
 883     KFileItemList items(m_dirLister->items());
 884     KFileItemList::const_iterator it = items.begin();
 885     const KFileItemList::const_iterator end = items.end();
 886     while (it != end) {
 887         KFileItem* item = *it;
 888         if (isCutItem(*item)) {
 889             const QModelIndex index = m_dirModel->indexForItem(*item);
 890             // Huh? the item is already known
 891             //const KFileItem item = m_dirModel->itemForIndex(index);
 892             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 893             if (value.type() == QVariant::Icon) {
 894                 const QIcon icon(qvariant_cast<QIcon>(value));
 895                 QPixmap pixmap = icon.pixmap(128, 128);
 896
 897                 // remember current pixmap for the item to be able
 898                 // to restore it when other items get cut
 899                 CutItem cutItem;
 900                 cutItem.url = item->url();
 901                 cutItem.pixmap = pixmap;
 902                 m_cutItemsCache.append(cutItem);
 903
 904                 // apply icon effect to the cut item
 905                 KIconEffect iconEffect;
 906                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 907                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 908             }
 909         }
 910         ++it;
 911     }
 912 }
 913
 914 void DolphinView::updateViewportColor()
 915 {
 916     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 917     if (m_active) {
 918         emit urlChanged(url()); // Hmm, this is a hack; the url hasn't really changed.
 919         emit selectionChanged(selectedItems());
 920     } else {
 921         color.setAlpha(0);
 922     }
 923
 924     QWidget* viewport = itemView()->viewport();
 925     QPalette palette;
 926     palette.setColor(viewport->backgroundRole(), color);
 927     viewport->setPalette(palette);
 928 }
 929
 930 #include "dolphinview.moc"