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 KFileItemList&)),
  88             this, SLOT(generatePreviews(const KFileItemList&)));
  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     QModelIndexList::const_iterator end = indexList.end();
 306     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 307         Q_ASSERT((*it).isValid());
 308
 309         KFileItem item = m_dirModel->itemForIndex(*it);
 310         if (!item.isNull()) {
 311             itemList.append(item);
 312         }
 313     }
 314
 315     return itemList;
 316 }
 317
 318 KUrl::List DolphinView::selectedUrls() const
 319 {
 320     KUrl::List urls;
 321     const QList<KFileItem> list = selectedItems();
 322     for ( QList<KFileItem>::const_iterator it = list.begin(), end = list.end();
 323           it != end; ++it ) {
 324         urls.append((*it).url());
 325     }
 326     return urls;
 327 }
 328
 329 KFileItem DolphinView::fileItem(const QModelIndex& index) const
 330 {
 331     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 332     return m_dirModel->itemForIndex(dirModelIndex);
 333 }
 334
 335 void DolphinView::setContentsPosition(int x, int y)
 336 {
 337     QAbstractItemView* view = itemView();
 338     view->horizontalScrollBar()->setValue(x);
 339     view->verticalScrollBar()->setValue(y);
 340
 341     m_loadingDirectory = false;
 342 }
 343
 344 QPoint DolphinView::contentsPosition() const
 345 {
 346     const int x = itemView()->horizontalScrollBar()->value();
 347     const int y = itemView()->verticalScrollBar()->value();
 348     return QPoint(x, y);
 349 }
 350
 351 void DolphinView::zoomIn()
 352 {
 353     m_controller->triggerZoomIn();
 354 }
 355
 356 void DolphinView::zoomOut()
 357 {
 358     m_controller->triggerZoomOut();
 359 }
 360
 361 bool DolphinView::isZoomInPossible() const
 362 {
 363     return m_controller->isZoomInPossible();
 364 }
 365
 366 bool DolphinView::isZoomOutPossible() const
 367 {
 368     return m_controller->isZoomOutPossible();
 369 }
 370
 371 void DolphinView::setSorting(Sorting sorting)
 372 {
 373     if (sorting != this->sorting()) {
 374         updateSorting(sorting);
 375     }
 376 }
 377
 378 DolphinView::Sorting DolphinView::sorting() const
 379 {
 380     return m_proxyModel->sorting();
 381 }
 382
 383 void DolphinView::setSortOrder(Qt::SortOrder order)
 384 {
 385     if (sortOrder() != order) {
 386         updateSortOrder(order);
 387     }
 388 }
 389
 390 Qt::SortOrder DolphinView::sortOrder() const
 391 {
 392     return m_proxyModel->sortOrder();
 393 }
 394
 395 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 396 {
 397     const KUrl viewPropsUrl = viewPropertiesUrl();
 398     ViewProperties props(viewPropsUrl);
 399     props.setAdditionalInfo(info);
 400
 401     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 402     m_fileItemDelegate->setAdditionalInformation(info);
 403
 404     emit additionalInfoChanged(info);
 405     startDirLister(viewPropsUrl, true);
 406 }
 407
 408 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 409 {
 410     return m_fileItemDelegate->additionalInformation();
 411 }
 412
 413 void DolphinView::reload()
 414 {
 415     setUrl(url());
 416     startDirLister(url(), true);
 417 }
 418
 419 void DolphinView::refresh()
 420 {
 421     createView();
 422     applyViewProperties(m_controller->url());
 423     reload();
 424     updateViewportColor();
 425 }
 426
 427 void DolphinView::setUrl(const KUrl& url)
 428 {
 429     if (m_controller->url() == url) {
 430         return;
 431     }
 432
 433     m_controller->setUrl(url);
 434
 435     applyViewProperties(url);
 436
 437     startDirLister(url);
 438     emit urlChanged(url);
 439 }
 440
 441 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 442 {
 443     QWidget::mouseReleaseEvent(event);
 444     setActive(true);;
 445 }
 446 void DolphinView::activate()
 447 {
 448     setActive(true);
 449 }
 450
 451 void DolphinView::triggerItem(const QModelIndex& index)
 452 {
 453     if (!isValidNameIndex(index)) {
 454         clearSelection();
 455         showHoverInformation(index);
 456         return;
 457     }
 458
 459     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 460     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 461         // items are selected by the user, hence don't trigger the
 462         // item specified by 'index'
 463         return;
 464     }
 465
 466     KFileItem item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 467     if (item.isNull()) {
 468         return;
 469     }
 470
 471     // The stuff below should be moved to ViewContainer and be just a signal?
 472
 473     // Prefer the local path over the URL.
 474     bool isLocal;
 475     KUrl url = item.mostLocalUrl(isLocal);
 476
 477     if (item.isDir()) {
 478         setUrl(url);
 479     } else if (item.isFile()) {
 480         // allow to browse through ZIP and tar files
 481         KMimeType::Ptr mime = item.mimeTypePtr();
 482         if (mime->is("application/zip")) {
 483             url.setProtocol("zip");
 484             setUrl(url);
 485         } else if (mime->is("application/x-tar") ||
 486                    mime->is("application/x-tarz") ||
 487                    mime->is("application/x-bzip-compressed-tar") ||
 488                    mime->is("application/x-compressed-tar") ||
 489                    mime->is("application/x-tzo")) {
 490             url.setProtocol("tar");
 491             setUrl(url);
 492         } else {
 493             item.run();
 494         }
 495     } else {
 496         item.run();
 497     }
 498 }
 499
 500 void DolphinView::generatePreviews(const KFileItemList& items)
 501 {
 502     if (m_controller->showPreview()) {
 503         // QList<KFileItem*> must be turned to QList<KFileItem>...
 504         QList<KFileItem> itemsToPreview;
 505         foreach (KFileItem* it, items) {
 506             itemsToPreview.append(*it);
 507         }
 508
 509         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 510         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 511                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 512     }
 513 }
 514
 515 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 516 {
 517     Q_ASSERT(!item.isNull());
 518     if (item.url().directory() != m_dirLister->url().path()) {
 519         // the preview job is still working on items of an older URL, hence
 520         // the item is not part of the directory model anymore
 521         return;
 522     }
 523
 524     const QModelIndex idx = m_dirModel->indexForItem(item);
 525     if (idx.isValid() && (idx.column() == 0)) {
 526         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 527         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 528             KIconEffect iconEffect;
 529             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 530             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 531         } else {
 532             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 533         }
 534     }
 535 }
 536
 537 void DolphinView::emitSelectionChangedSignal()
 538 {
 539     emit selectionChanged(DolphinView::selectedItems());
 540 }
 541
 542 void DolphinView::startDirLister(const KUrl& url, bool reload)
 543 {
 544     if (!url.isValid()) {
 545         const QString location(url.pathOrUrl());
 546         if (location.isEmpty()) {
 547             emit errorMessage(i18nc("@info:status", "The location is empty."));
 548         } else {
 549             emit errorMessage(i18nc("@info:status", "The location '%1' is invalid.", location));
 550         }
 551         return;
 552     }
 553
 554     m_cutItemsCache.clear();
 555     m_loadingDirectory = true;
 556
 557     m_dirLister->stop();
 558
 559     bool openDir = true;
 560     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 561     m_initializeColumnView = false;
 562
 563     if (keepOldDirs) {
 564         if (reload) {
 565             keepOldDirs = false;
 566
 567             const KUrl& dirListerUrl = m_dirLister->url();
 568             if (dirListerUrl.isValid()) {
 569                 const KUrl::List dirs = m_dirLister->directories();
 570                 KUrl url;
 571                 foreach(url, dirs) {
 572                     m_dirLister->updateDirectory(url);
 573                 }
 574                 openDir = false;
 575             }
 576         } else if (m_dirLister->directories().contains(url)) {
 577             // The dir lister contains the directory already, so
 578             // KDirLister::openUrl() may not been invoked twice.
 579             m_dirLister->updateDirectory(url);
 580             openDir = false;
 581         } else {
 582             const KUrl& dirListerUrl = m_dirLister->url();
 583             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 584                 // The current URL is not a child of the dir lister
 585                 // URL. This may happen when e. g. a bookmark has been selected
 586                 // and hence the view must be reset.
 587                 keepOldDirs = false;
 588             }
 589         }
 590     }
 591
 592     if (openDir) {
 593         m_dirLister->openUrl(url, keepOldDirs, reload);
 594     }
 595 }
 596
 597 KUrl DolphinView::viewPropertiesUrl() const
 598 {
 599     if (isColumnViewActive()) {
 600         return m_dirLister->url();
 601     }
 602
 603     return url();
 604 }
 605
 606 void DolphinView::applyViewProperties(const KUrl& url)
 607 {
 608     if (isColumnViewActive() && m_dirLister->url().isParentOf(url)) {
 609         // The column view is active, hence don't apply the view properties
 610         // of sub directories (represented by columns) to the view. The
 611         // view always represents the properties of the first column.
 612         return;
 613     }
 614
 615     const ViewProperties props(url);
 616
 617     const Mode mode = props.viewMode();
 618     if (m_mode != mode) {
 619         m_mode = mode;
 620         createView();
 621         emit modeChanged();
 622
 623         if (m_mode == ColumnView) {
 624             // The mode has been changed to the Column View. When starting the dir
 625             // lister with DolphinView::startDirLister() it is important to give a
 626             // hint that the dir lister may not keep the current directory
 627             // although this is the default for showing a hierarchy.
 628             m_initializeColumnView = true;
 629         }
 630     }
 631     if (itemView() == 0) {
 632         createView();
 633     }
 634     Q_ASSERT(itemView() != 0);
 635     Q_ASSERT(m_fileItemDelegate != 0);
 636
 637     const bool showHiddenFiles = props.showHiddenFiles();
 638     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 639         m_dirLister->setShowingDotFiles(showHiddenFiles);
 640         emit showHiddenFilesChanged();
 641     }
 642
 643     const bool categorized = props.categorizedSorting();
 644     if (categorized != categorizedSorting()) {
 645         if (supportsCategorizedSorting()) {
 646             Q_ASSERT(m_iconsView != 0);
 647             if (categorized) {
 648                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 649                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 650             } else {
 651                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 652                 m_iconsView->setItemCategorizer(0);
 653                 delete categorizer;
 654             }
 655         }
 656         emit categorizedSortingChanged();
 657     }
 658
 659     const DolphinView::Sorting sorting = props.sorting();
 660     if (sorting != m_proxyModel->sorting()) {
 661         m_proxyModel->setSorting(sorting);
 662         emit sortingChanged(sorting);
 663     }
 664
 665     const Qt::SortOrder sortOrder = props.sortOrder();
 666     if (sortOrder != m_proxyModel->sortOrder()) {
 667         m_proxyModel->setSortOrder(sortOrder);
 668         emit sortOrderChanged(sortOrder);
 669     }
 670
 671     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 672     if (info != m_fileItemDelegate->additionalInformation()) {
 673         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 674         m_fileItemDelegate->setAdditionalInformation(info);
 675         emit additionalInfoChanged(info);
 676     }
 677
 678     const bool showPreview = props.showPreview();
 679     if (showPreview != m_controller->showPreview()) {
 680         m_controller->setShowPreview(showPreview);
 681         emit showPreviewChanged();
 682     }
 683 }
 684
 685 void DolphinView::changeSelection(const QList<KFileItem>& selection)
 686 {
 687     clearSelection();
 688     if (selection.isEmpty()) {
 689         return;
 690     }
 691     const KUrl& baseUrl = url();
 692     KUrl url;
 693     QItemSelection new_selection;
 694     foreach(const KFileItem& item, selection) {
 695         url = item.url().upUrl();
 696         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 697             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(item));
 698             new_selection.select(index, index);
 699         }
 700     }
 701     itemView()->selectionModel()->select(new_selection,
 702                                          QItemSelectionModel::ClearAndSelect
 703                                          | QItemSelectionModel::Current);
 704 }
 705
 706 void DolphinView::openContextMenu(const QPoint& pos)
 707 {
 708     KFileItem item;
 709
 710     const QModelIndex index = itemView()->indexAt(pos);
 711     if (isValidNameIndex(index)) {
 712         item = fileItem(index);
 713     }
 714
 715     emit requestContextMenu(item, url());
 716 }
 717
 718 void DolphinView::dropUrls(const KUrl::List& urls,
 719                            const QModelIndex& index,
 720                            QWidget* source)
 721 {
 722     KFileItem directory;
 723     if (isValidNameIndex(index)) {
 724         KFileItem item = fileItem(index);
 725         Q_ASSERT(!item.isNull());
 726         if (item.isDir()) {
 727             // the URLs are dropped above a directory
 728             directory = item;
 729         }
 730     }
 731
 732     if ((directory.isNull()) && (source == itemView())) {
 733         // The dropping is done into the same viewport where
 734         // the dragging has been started. Just ignore this...
 735         return;
 736     }
 737
 738     const KUrl& destination = (directory.isNull()) ?
 739                               url() : directory.url();
 740     dropUrls(urls, destination);
 741 }
 742
 743 void DolphinView::dropUrls(const KUrl::List& urls,
 744                            const KUrl& destination)
 745 {
 746     emit urlsDropped(urls, destination);
 747 }
 748
 749 void DolphinView::updateSorting(DolphinView::Sorting sorting)
 750 {
 751     ViewProperties props(viewPropertiesUrl());
 752     props.setSorting(sorting);
 753
 754     m_proxyModel->setSorting(sorting);
 755
 756     emit sortingChanged(sorting);
 757 }
 758
 759 void DolphinView::updateSortOrder(Qt::SortOrder order)
 760 {
 761     ViewProperties props(viewPropertiesUrl());
 762     props.setSortOrder(order);
 763
 764     m_proxyModel->setSortOrder(order);
 765
 766     emit sortOrderChanged(order);
 767 }
 768
 769 void DolphinView::emitContentsMoved()
 770 {
 771     // only emit the contents moved signal if:
 772     // - no directory loading is ongoing (this would reset the contents position
 773     //   always to (0, 0))
 774     // - if the Column View is active: the column view does an automatic
 775     //   positioning during the loading operation, which must be remembered
 776     if (!m_loadingDirectory || isColumnViewActive()) {
 777         const QPoint pos(contentsPosition());
 778         emit contentsMoved(pos.x(), pos.y());
 779     }
 780 }
 781
 782 void DolphinView::updateCutItems()
 783 {
 784     // restore the icons of all previously selected items to the
 785     // original state...
 786     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
 787     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
 788     while (it != end) {
 789         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
 790         if (index.isValid()) {
 791             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
 792         }
 793         ++it;
 794     }
 795     m_cutItemsCache.clear();
 796
 797     // ... and apply an item effect to all currently cut items
 798     applyCutItemEffect();
 799 }
 800
 801 void DolphinView::showHoverInformation(const QModelIndex& index)
 802 {
 803     if (hasSelection()) {
 804         return;
 805     }
 806
 807     const KFileItem item = fileItem(index);
 808     if (!item.isNull()) {
 809         emit requestItemInfo(item);
 810     }
 811 }
 812
 813 void DolphinView::clearHoverInformation()
 814 {
 815     emit requestItemInfo(KFileItem());
 816 }
 817
 818
 819 void DolphinView::createView()
 820 {
 821     // delete current view
 822     QAbstractItemView* view = itemView();
 823     if (view != 0) {
 824         m_topLayout->removeWidget(view);
 825         view->close();
 826         if (view == m_iconsView) {
 827             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 828             m_iconsView->setItemCategorizer(0);
 829             delete categorizer;
 830         }
 831         view->deleteLater();
 832         view = 0;
 833         m_iconsView = 0;
 834         m_detailsView = 0;
 835         m_columnView = 0;
 836         m_fileItemDelegate = 0;
 837     }
 838
 839     Q_ASSERT(m_iconsView == 0);
 840     Q_ASSERT(m_detailsView == 0);
 841     Q_ASSERT(m_columnView == 0);
 842
 843     // ... and recreate it representing the current mode
 844     switch (m_mode) {
 845     case IconsView:
 846         m_iconsView = new DolphinIconsView(this, m_controller);
 847         view = m_iconsView;
 848         break;
 849
 850     case DetailsView:
 851         m_detailsView = new DolphinDetailsView(this, m_controller);
 852         view = m_detailsView;
 853         break;
 854
 855     case ColumnView:
 856         m_columnView = new DolphinColumnView(this, m_controller);
 857         view = m_columnView;
 858         break;
 859     }
 860
 861     Q_ASSERT(view != 0);
 862
 863     m_fileItemDelegate = new KFileItemDelegate(view);
 864     view->setItemDelegate(m_fileItemDelegate);
 865
 866     view->setModel(m_proxyModel);
 867     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
 868
 869     new KMimeTypeResolver(view, m_dirModel);
 870     m_topLayout->insertWidget(1, view);
 871
 872     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
 873             this, SLOT(emitSelectionChangedSignal()));
 874     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
 875             this, SLOT(emitContentsMoved()));
 876     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
 877             this, SLOT(emitContentsMoved()));
 878 }
 879
 880 QAbstractItemView* DolphinView::itemView() const
 881 {
 882     if (m_detailsView != 0) {
 883         return m_detailsView;
 884     } else if (m_columnView != 0) {
 885         return m_columnView;
 886     }
 887
 888     return m_iconsView;
 889 }
 890
 891 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
 892 {
 893     return index.isValid() && (index.column() == KDirModel::Name);
 894 }
 895
 896 bool DolphinView::isCutItem(const KFileItem& item) const
 897 {
 898     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 899     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 900
 901     const KUrl& itemUrl = item.url();
 902     KUrl::List::const_iterator it = cutUrls.begin();
 903     const KUrl::List::const_iterator end = cutUrls.end();
 904     while (it != end) {
 905         if (*it == itemUrl) {
 906             return true;
 907         }
 908         ++it;
 909     }
 910
 911     return false;
 912 }
 913
 914 void DolphinView::applyCutItemEffect()
 915 {
 916     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 917     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
 918         return;
 919     }
 920
 921     KFileItemList items(m_dirLister->items());
 922     KFileItemList::const_iterator it = items.begin();
 923     const KFileItemList::const_iterator end = items.end();
 924     while (it != end) {
 925         KFileItem* item = *it;
 926         if (isCutItem(*item)) {
 927             const QModelIndex index = m_dirModel->indexForItem(*item);
 928             // Huh? the item is already known
 929             //const KFileItem item = m_dirModel->itemForIndex(index);
 930             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
 931             if (value.type() == QVariant::Icon) {
 932                 const QIcon icon(qvariant_cast<QIcon>(value));
 933                 QPixmap pixmap = icon.pixmap(128, 128);
 934
 935                 // remember current pixmap for the item to be able
 936                 // to restore it when other items get cut
 937                 CutItem cutItem;
 938                 cutItem.url = item->url();
 939                 cutItem.pixmap = pixmap;
 940                 m_cutItemsCache.append(cutItem);
 941
 942                 // apply icon effect to the cut item
 943                 KIconEffect iconEffect;
 944                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 945                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
 946             }
 947         }
 948         ++it;
 949     }
 950 }
 951
 952 void DolphinView::updateViewportColor()
 953 {
 954     QColor color = KColorScheme(KColorScheme::View).background();
 955     if (m_active) {
 956         emit urlChanged(url());
 957         emit selectionChanged(selectedItems());
 958     } else {
 959         color.setAlpha(0);
 960     }
 961
 962     QWidget* viewport = itemView()->viewport();
 963     QPalette palette;
 964     palette.setColor(viewport->backgroundRole(), color);
 965     viewport->setPalette(palette);
 966 }
 967
 968 #include "dolphinview.moc"