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 <QtGui/QApplication>
  24 #include <QtGui/QClipboard>
  25 #include <QtGui/QKeyEvent>
  26 #include <QtGui/QItemSelection>
  27 #include <QtGui/QBoxLayout>
  28 #include <QtCore/QTimer>
  29 #include <QtGui/QScrollBar>
  30
  31 #include <kdirmodel.h>
  32 #include <kfileitemdelegate.h>
  33 #include <kfileplacesmodel.h>
  34 #include <klocale.h>
  35 #include <kiconeffect.h>
  36 #include <kio/netaccess.h>
  37 #include <kio/renamedialog.h>
  38 #include <kio/previewjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41 #include <konq_operations.h>
  42 #include <kurl.h>
  43
  44 #include "dolphincolumnview.h"
  45 #include "dolphincontroller.h"
  46 #include "dolphinstatusbar.h"
  47 #include "dolphinmainwindow.h"
  48 #include "dolphindirlister.h"
  49 #include "dolphinsortfilterproxymodel.h"
  50 #include "dolphindetailsview.h"
  51 #include "dolphiniconsview.h"
  52 #include "dolphincontextmenu.h"
  53 #include "dolphinitemcategorizer.h"
  54 #include "filterbar.h"
  55 #include "renamedialog.h"
  56 #include "kurlnavigator.h"
  57 #include "viewproperties.h"
  58 #include "dolphinsettings.h"
  59 #include "dolphin_generalsettings.h"
  60
  61 DolphinView::DolphinView(DolphinMainWindow* mainWindow,
  62                          QWidget* parent,
  63                          const KUrl& url,
  64                          Mode mode,
  65                          bool showHiddenFiles) :
  66     QWidget(parent),
  67     m_showProgress(false),
  68     m_blockContentsMovedSignal(false),
  69     m_initializeColumnView(false),
  70     m_mode(mode),
  71     m_iconSize(0),
  72     m_folderCount(0),
  73     m_fileCount(0),
  74     m_mainWindow(mainWindow),
  75     m_topLayout(0),
  76     m_urlNavigator(0),
  77     m_controller(0),
  78     m_iconsView(0),
  79     m_detailsView(0),
  80     m_columnView(0),
  81     m_fileItemDelegate(0),
  82     m_filterBar(0),
  83     m_statusBar(0),
  84     m_dirModel(0),
  85     m_dirLister(0),
  86     m_proxyModel(0)
  87 {
  88     hide();
  89     setFocusPolicy(Qt::StrongFocus);
  90     m_topLayout = new QVBoxLayout(this);
  91     m_topLayout->setSpacing(0);
  92     m_topLayout->setMargin(0);
  93
  94     connect(m_mainWindow, SIGNAL(activeViewChanged()),
  95             this, SLOT(updateActivationState()));
  96
  97     QClipboard* clipboard = QApplication::clipboard();
  98     connect(clipboard, SIGNAL(dataChanged()),
  99             this, SLOT(updateCutItems()));
 100
 101     m_urlNavigator = new KUrlNavigator(DolphinSettings::instance().placesModel(), url, this);
 102     m_urlNavigator->setUrlEditable(DolphinSettings::instance().generalSettings()->editableUrl());
 103     m_urlNavigator->setHomeUrl(DolphinSettings::instance().generalSettings()->homeUrl());
 104     connect(m_urlNavigator, SIGNAL(urlChanged(const KUrl&)),
 105             this, SLOT(changeDirectory(const KUrl&)));
 106     connect(m_urlNavigator, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&)),
 107             this, SLOT(dropUrls(const KUrl::List&, const KUrl&)));
 108     connect(m_urlNavigator, SIGNAL(activated()),
 109             this, SLOT(requestActivation()));
 110     connect(this, SIGNAL(contentsMoved(int, int)),
 111             m_urlNavigator, SLOT(savePosition(int, int)));
 112
 113     m_statusBar = new DolphinStatusBar(this);
 114
 115     m_dirLister = new DolphinDirLister();
 116     m_dirLister->setAutoUpdate(true);
 117     m_dirLister->setMainWindow(this);
 118     m_dirLister->setShowingDotFiles(showHiddenFiles);
 119     m_dirLister->setDelayedMimeTypes(true);
 120
 121     connect(m_dirLister, SIGNAL(clear()),
 122             this, SLOT(updateStatusBar()));
 123     connect(m_dirLister, SIGNAL(percent(int)),
 124             this, SLOT(updateProgress(int)));
 125     connect(m_dirLister, SIGNAL(deleteItem(KFileItem*)),
 126             this, SLOT(updateStatusBar()));
 127     connect(m_dirLister, SIGNAL(completed()),
 128             this, SLOT(updateItemCount()));
 129     connect(m_dirLister, SIGNAL(completed()),
 130             this, SLOT(updateCutItems()));
 131     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 132             this, SLOT(generatePreviews(const KFileItemList&)));
 133     connect(m_dirLister, SIGNAL(infoMessage(const QString&)),
 134             this, SLOT(showInfoMessage(const QString&)));
 135     connect(m_dirLister, SIGNAL(errorMessage(const QString&)),
 136             this, SLOT(showErrorMessage(const QString&)));
 137
 138     m_dirModel = new KDirModel();
 139     m_dirModel->setDirLister(m_dirLister);
 140     m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
 141
 142     m_proxyModel = new DolphinSortFilterProxyModel(this);
 143     m_proxyModel->setSourceModel(m_dirModel);
 144
 145     m_controller = new DolphinController(this);
 146     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 147             this, SLOT(openContextMenu(const QPoint&)));
 148     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&, QWidget*)),
 149             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&, QWidget*)));
 150     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 151             this, SLOT(updateSorting(DolphinView::Sorting)));
 152     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 153             this, SLOT(updateSortOrder(Qt::SortOrder)));
 154     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 155             this, SLOT(triggerItem(const QModelIndex&)));
 156     connect(m_controller, SIGNAL(selectionChanged()),
 157             this, SLOT(emitSelectionChangedSignal()));
 158     connect(m_controller, SIGNAL(activated()),
 159             this, SLOT(requestActivation()));
 160
 161     createView();
 162
 163     m_iconSize = K3Icon::SizeMedium;
 164
 165     m_filterBar = new FilterBar(this);
 166     m_filterBar->hide();
 167     connect(m_filterBar, SIGNAL(filterChanged(const QString&)),
 168             this, SLOT(changeNameFilter(const QString&)));
 169     connect(m_filterBar, SIGNAL(closeRequest()),
 170             this, SLOT(closeFilterBar()));
 171
 172     m_topLayout->addWidget(m_urlNavigator);
 173     m_topLayout->addWidget(itemView());
 174     m_topLayout->addWidget(m_filterBar);
 175     m_topLayout->addWidget(m_statusBar);
 176 }
 177
 178 DolphinView::~DolphinView()
 179 {
 180     delete m_dirLister;
 181     m_dirLister = 0;
 182 }
 183
 184 void DolphinView::setUrl(const KUrl& url)
 185 {
 186     m_urlNavigator->setUrl(url);
 187     m_controller->setUrl(url);
 188 }
 189
 190 const KUrl& DolphinView::url() const
 191 {
 192     return m_urlNavigator->url();
 193 }
 194
 195 bool DolphinView::isActive() const
 196 {
 197     return m_mainWindow->activeView() == this;
 198 }
 199
 200 void DolphinView::setMode(Mode mode)
 201 {
 202     if (mode == m_mode) {
 203         return; // the wished mode is already set
 204     }
 205
 206     m_mode = mode;
 207
 208     if (isColumnViewActive()) {
 209         // When changing the mode in the column view, it makes sense
 210         // to go back to the root URL of the column view automatically.
 211         // Otherwise there it would not be possible to turn off the column view
 212         // without focusing the first column.
 213         setUrl(m_dirLister->url());
 214     }
 215
 216     ViewProperties props(m_urlNavigator->url());
 217     props.setViewMode(m_mode);
 218
 219     createView();
 220     startDirLister(m_urlNavigator->url());
 221
 222     emit modeChanged();
 223 }
 224
 225 DolphinView::Mode DolphinView::mode() const
 226 {
 227     return m_mode;
 228 }
 229
 230 void DolphinView::setShowPreview(bool show)
 231 {
 232     ViewProperties props(m_urlNavigator->url());
 233     props.setShowPreview(show);
 234
 235     m_controller->setShowPreview(show);
 236     emit showPreviewChanged();
 237
 238     startDirLister(m_urlNavigator->url(), true);
 239 }
 240
 241 bool DolphinView::showPreview() const
 242 {
 243     return m_controller->showPreview();
 244 }
 245
 246 void DolphinView::setShowHiddenFiles(bool show)
 247 {
 248     if (m_dirLister->showingDotFiles() == show) {
 249         return;
 250     }
 251
 252     ViewProperties props(m_urlNavigator->url());
 253     props.setShowHiddenFiles(show);
 254
 255     m_dirLister->setShowingDotFiles(show);
 256     emit showHiddenFilesChanged();
 257
 258     startDirLister(m_urlNavigator->url(), true);
 259 }
 260
 261 bool DolphinView::showHiddenFiles() const
 262 {
 263     return m_dirLister->showingDotFiles();
 264 }
 265
 266 void DolphinView::setCategorizedSorting(bool categorized)
 267 {
 268     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 269         return;
 270     }
 271
 272     Q_ASSERT(m_iconsView != 0);
 273     if (categorized) {
 274         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 275         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 276     } else {
 277         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 278         m_iconsView->setItemCategorizer(0);
 279         delete categorizer;
 280     }
 281
 282     ViewProperties props(m_urlNavigator->url());
 283     props.setCategorizedSorting(categorized);
 284     props.save();
 285
 286     emit categorizedSortingChanged();
 287 }
 288
 289 bool DolphinView::categorizedSorting() const
 290 {
 291     if (!supportsCategorizedSorting()) {
 292         return false;
 293     }
 294
 295     Q_ASSERT(m_iconsView != 0);
 296     return m_iconsView->itemCategorizer() != 0;
 297 }
 298
 299 bool DolphinView::supportsCategorizedSorting() const
 300 {
 301     return m_iconsView != 0;
 302 }
 303
 304 void DolphinView::renameSelectedItems()
 305 {
 306     DolphinView* view = mainWindow()->activeView();
 307     const KUrl::List urls = selectedUrls();
 308     if (urls.count() > 1) {
 309         // More than one item has been selected for renaming. Open
 310         // a rename dialog and rename all items afterwards.
 311         RenameDialog dialog(urls);
 312         if (dialog.exec() == QDialog::Rejected) {
 313             return;
 314         }
 315
 316         const QString& newName = dialog.newName();
 317         if (newName.isEmpty()) {
 318             view->statusBar()->setMessage(dialog.errorString(),
 319                                           DolphinStatusBar::Error);
 320         } else {
 321             // TODO: check how this can be integrated into KonqUndoManager/KonqOperations
 322             // as one operation instead of n rename operations like it is done now...
 323             Q_ASSERT(newName.contains('#'));
 324
 325             // iterate through all selected items and rename them...
 326             const int replaceIndex = newName.indexOf('#');
 327             Q_ASSERT(replaceIndex >= 0);
 328             int index = 1;
 329
 330             KUrl::List::const_iterator it = urls.begin();
 331             KUrl::List::const_iterator end = urls.end();
 332             while (it != end) {
 333                 const KUrl& oldUrl = *it;
 334                 QString number;
 335                 number.setNum(index++);
 336
 337                 QString name(newName);
 338                 name.replace(replaceIndex, 1, number);
 339
 340                 if (oldUrl.fileName() != name) {
 341                     KUrl newUrl = oldUrl;
 342                     newUrl.setFileName(name);
 343                     m_mainWindow->rename(oldUrl, newUrl);
 344                 }
 345                 ++it;
 346             }
 347         }
 348     } else {
 349         // Only one item has been selected for renaming. Use the custom
 350         // renaming mechanism from the views.
 351         Q_ASSERT(urls.count() == 1);
 352
 353         // TODO: Think about using KFileItemDelegate as soon as it supports editing.
 354         // Currently the RenameDialog is used, but I'm not sure whether inline renaming
 355         // is a benefit for the user at all -> let's wait for some input first...
 356         RenameDialog dialog(urls);
 357         if (dialog.exec() == QDialog::Rejected) {
 358             return;
 359         }
 360
 361         const QString& newName = dialog.newName();
 362         if (newName.isEmpty()) {
 363             view->statusBar()->setMessage(dialog.errorString(),
 364                                           DolphinStatusBar::Error);
 365         } else {
 366             const KUrl& oldUrl = urls.first();
 367             KUrl newUrl = oldUrl;
 368             newUrl.setFileName(newName);
 369             m_mainWindow->rename(oldUrl, newUrl);
 370         }
 371     }
 372 }
 373
 374 void DolphinView::selectAll()
 375 {
 376     selectAll(QItemSelectionModel::Select);
 377 }
 378
 379 void DolphinView::invertSelection()
 380 {
 381     selectAll(QItemSelectionModel::Toggle);
 382 }
 383
 384 DolphinStatusBar* DolphinView::statusBar() const
 385 {
 386     return m_statusBar;
 387 }
 388
 389 int DolphinView::contentsX() const
 390 {
 391     return itemView()->horizontalScrollBar()->value();
 392 }
 393
 394 int DolphinView::contentsY() const
 395 {
 396     return itemView()->verticalScrollBar()->value();
 397 }
 398
 399 void DolphinView::emitRequestItemInfo(const KUrl& url)
 400 {
 401     emit requestItemInfo(url);
 402 }
 403
 404 bool DolphinView::isFilterBarVisible() const
 405 {
 406     return m_filterBar->isVisible();
 407 }
 408
 409 bool DolphinView::isUrlEditable() const
 410 {
 411     return m_urlNavigator->isUrlEditable();
 412 }
 413
 414 void DolphinView::zoomIn()
 415 {
 416     m_controller->triggerZoomIn();
 417 }
 418
 419 void DolphinView::zoomOut()
 420 {
 421     m_controller->triggerZoomOut();
 422 }
 423
 424 bool DolphinView::isZoomInPossible() const
 425 {
 426     return m_controller->isZoomInPossible();
 427 }
 428
 429 bool DolphinView::isZoomOutPossible() const
 430 {
 431     return m_controller->isZoomOutPossible();
 432 }
 433
 434 void DolphinView::setSorting(Sorting sorting)
 435 {
 436     if (sorting != this->sorting()) {
 437         updateSorting(sorting);
 438     }
 439 }
 440
 441 DolphinView::Sorting DolphinView::sorting() const
 442 {
 443     return m_proxyModel->sorting();
 444 }
 445
 446 void DolphinView::setSortOrder(Qt::SortOrder order)
 447 {
 448     if (sortOrder() != order) {
 449         updateSortOrder(order);
 450     }
 451 }
 452
 453 Qt::SortOrder DolphinView::sortOrder() const
 454 {
 455     return m_proxyModel->sortOrder();
 456 }
 457
 458 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 459 {
 460     ViewProperties props(m_urlNavigator->url());
 461     props.setAdditionalInfo(info);
 462
 463     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 464     m_fileItemDelegate->setAdditionalInformation(info);
 465
 466     emit additionalInfoChanged(info);
 467     startDirLister(m_urlNavigator->url(), true);
 468 }
 469
 470 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 471 {
 472     return m_fileItemDelegate->additionalInformation();
 473 }
 474
 475 void DolphinView::goBack()
 476 {
 477     m_urlNavigator->goBack();
 478 }
 479
 480 void DolphinView::goForward()
 481 {
 482     m_urlNavigator->goForward();
 483 }
 484
 485 void DolphinView::goUp()
 486 {
 487     m_urlNavigator->goUp();
 488 }
 489
 490 void DolphinView::goHome()
 491 {
 492     m_urlNavigator->goHome();
 493 }
 494
 495 void DolphinView::setUrlEditable(bool editable)
 496 {
 497     m_urlNavigator->setUrlEditable(editable);
 498 }
 499
 500 bool DolphinView::hasSelection() const
 501 {
 502     return itemView()->selectionModel()->hasSelection();
 503 }
 504
 505 void DolphinView::clearSelection()
 506 {
 507     itemView()->selectionModel()->clear();
 508 }
 509
 510 KFileItemList DolphinView::selectedItems() const
 511 {
 512     const QAbstractItemView* view = itemView();
 513
 514     // Our view has a selection, we will map them back to the DirModel
 515     // and then fill the KFileItemList.
 516     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 517
 518     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 519     KFileItemList itemList;
 520
 521     const QModelIndexList indexList = selection.indexes();
 522     QModelIndexList::const_iterator end = indexList.end();
 523     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 524         Q_ASSERT((*it).isValid());
 525
 526         KFileItem* item = m_dirModel->itemForIndex(*it);
 527         if (item != 0) {
 528             itemList.append(item);
 529         }
 530     }
 531
 532     return itemList;
 533 }
 534
 535 KUrl::List DolphinView::selectedUrls() const
 536 {
 537     KUrl::List urls;
 538
 539     const KFileItemList list = selectedItems();
 540     KFileItemList::const_iterator it = list.begin();
 541     const KFileItemList::const_iterator end = list.end();
 542     while (it != end) {
 543         KFileItem* item = *it;
 544         urls.append(item->url());
 545         ++it;
 546     }
 547
 548     return urls;
 549 }
 550
 551 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 552 {
 553     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 554     return m_dirModel->itemForIndex(dirModelIndex);
 555 }
 556
 557 void DolphinView::rename(const KUrl& source, const QString& newName)
 558 {
 559     bool ok = false;
 560
 561     if (newName.isEmpty() || (source.fileName() == newName)) {
 562         return;
 563     }
 564
 565     KUrl dest(source.upUrl());
 566     dest.addPath(newName);
 567
 568     const bool destExists = KIO::NetAccess::exists(dest,
 569                             false,
 570                             mainWindow()->activeView());
 571     if (destExists) {
 572         // the destination already exists, hence ask the user
 573         // how to proceed...
 574         KIO::RenameDialog renameDialog(this,
 575                                        i18n("File Already Exists"),
 576                                        source.path(),
 577                                        dest.path(),
 578                                        KIO::M_OVERWRITE);
 579         switch (renameDialog.exec()) {
 580         case KIO::R_OVERWRITE:
 581             // the destination should be overwritten
 582             ok = KIO::NetAccess::file_move(source, dest, -1, true);
 583             break;
 584
 585         case KIO::R_RENAME: {
 586             // a new name for the destination has been used
 587             KUrl newDest(renameDialog.newDestUrl());
 588             ok = KIO::NetAccess::file_move(source, newDest);
 589             break;
 590         }
 591
 592         default:
 593             // the renaming operation has been canceled
 594             return;
 595         }
 596     } else {
 597         // no destination exists, hence just move the file to
 598         // do the renaming
 599         ok = KIO::NetAccess::file_move(source, dest);
 600     }
 601
 602     const QString destFileName = dest.fileName();
 603     if (ok) {
 604         m_statusBar->setMessage(i18n("Renamed file '%1' to '%2'.", source.fileName(), destFileName),
 605                                 DolphinStatusBar::OperationCompleted);
 606
 607         KonqOperations::rename(this, source, destFileName);
 608     } else {
 609         m_statusBar->setMessage(i18n("Renaming of file '%1' to '%2' failed.", source.fileName(), destFileName),
 610                                 DolphinStatusBar::Error);
 611     }
 612 }
 613
 614 void DolphinView::reload()
 615 {
 616     const KUrl& url = m_urlNavigator->url();
 617     changeDirectory(url);
 618     startDirLister(url, true);
 619 }
 620
 621 void DolphinView::refresh()
 622 {
 623     createView();
 624 }
 625
 626 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 627 {
 628     QWidget::mouseReleaseEvent(event);
 629     mainWindow()->setActiveView(this);
 630 }
 631
 632 DolphinMainWindow* DolphinView::mainWindow() const
 633 {
 634     return m_mainWindow;
 635 }
 636
 637 void DolphinView::changeDirectory(const KUrl& url)
 638 {
 639     if (!isActive()) {
 640         requestActivation();
 641     }
 642
 643     const ViewProperties props(url);
 644
 645     const Mode mode = props.viewMode();
 646     bool changeMode = (m_mode != mode);
 647     if (changeMode && isColumnViewActive()) {
 648         // The column view is active. Only change the
 649         // mode if the current URL is no child of the column view.
 650         if (m_dirLister->url().isParentOf(url)) {
 651             changeMode = false;
 652         }
 653     }
 654
 655     if (changeMode) {
 656         m_mode = mode;
 657         createView();
 658         emit modeChanged();
 659
 660         if (m_mode == ColumnView) {
 661             // The mode has been changed to the Column View. When starting the dir
 662             // lister with DolphinView::startDirLister() it is important to give a
 663             // hint that the dir lister may not keep the current directory
 664             // although this is the default for showing a hierarchy.
 665             m_initializeColumnView = true;
 666         }
 667     }
 668
 669     const bool showHiddenFiles = props.showHiddenFiles();
 670     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 671         m_dirLister->setShowingDotFiles(showHiddenFiles);
 672         emit showHiddenFilesChanged();
 673     }
 674
 675     const bool categorized = props.categorizedSorting();
 676     if (categorized != categorizedSorting()) {
 677         if (supportsCategorizedSorting()) {
 678             Q_ASSERT(m_iconsView != 0);
 679             if (categorized) {
 680                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 681                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 682             } else {
 683                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 684                 m_iconsView->setItemCategorizer(0);
 685                 delete categorizer;
 686             }
 687         }
 688         emit categorizedSortingChanged();
 689     }
 690
 691     const DolphinView::Sorting sorting = props.sorting();
 692     if (sorting != m_proxyModel->sorting()) {
 693         m_proxyModel->setSorting(sorting);
 694         emit sortingChanged(sorting);
 695     }
 696
 697     const Qt::SortOrder sortOrder = props.sortOrder();
 698     if (sortOrder != m_proxyModel->sortOrder()) {
 699         m_proxyModel->setSortOrder(sortOrder);
 700         emit sortOrderChanged(sortOrder);
 701     }
 702
 703     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 704     if (info != m_fileItemDelegate->additionalInformation()) {
 705         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 706         m_fileItemDelegate->setAdditionalInformation(info);
 707         emit additionalInfoChanged(info);
 708     }
 709
 710     const bool showPreview = props.showPreview();
 711     if (showPreview != m_controller->showPreview()) {
 712         m_controller->setShowPreview(showPreview);
 713         emit showPreviewChanged();
 714     }
 715
 716     startDirLister(url);
 717     emit urlChanged(url);
 718
 719     m_statusBar->clear();
 720 }
 721
 722 void DolphinView::triggerItem(const QModelIndex& index)
 723 {
 724     if (!isValidNameIndex(index)) {
 725         return;
 726     }
 727
 728     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 729     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 730         // items are selected by the user, hence don't trigger the
 731         // item specified by 'index'
 732         return;
 733     }
 734
 735     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 736     if (item == 0) {
 737         return;
 738     }
 739
 740     // Prefer the local path over the URL. This assures that the
 741     // volume space information is correct. Assuming that the URL is media:/sda1,
 742     // and the local path is /windows/C: For the URL the space info is related
 743     // to the root partition (and hence wrong) and for the local path the space
 744     // info is related to the windows partition (-> correct).
 745     const QString localPath(item->localPath());
 746     KUrl url;
 747     if (localPath.isEmpty()) {
 748         url = item->url();
 749     } else {
 750         url = localPath;
 751     }
 752
 753     if (item->isDir()) {
 754         setUrl(url);
 755     } else if (item->isFile()) {
 756         // allow to browse through ZIP and tar files
 757         KMimeType::Ptr mime = item->mimeTypePtr();
 758         if (mime->is("application/zip")) {
 759             url.setProtocol("zip");
 760             setUrl(url);
 761         } else if (mime->is("application/x-tar") ||
 762                    mime->is("application/x-tarz") ||
 763                    mime->is("application/x-bzip-compressed-tar") ||
 764                    mime->is("application/x-compressed-tar") ||
 765                    mime->is("application/x-tzo")) {
 766             url.setProtocol("tar");
 767             setUrl(url);
 768         } else {
 769             item->run();
 770         }
 771     } else {
 772         item->run();
 773     }
 774 }
 775
 776 void DolphinView::updateProgress(int percent)
 777 {
 778     if (m_showProgress) {
 779         m_statusBar->setProgress(percent);
 780     }
 781 }
 782
 783 void DolphinView::updateItemCount()
 784 {
 785     if (m_showProgress) {
 786         m_statusBar->setProgressText(QString());
 787         m_statusBar->setProgress(100);
 788         m_showProgress = false;
 789     }
 790
 791     KFileItemList items(m_dirLister->items());
 792     KFileItemList::const_iterator it = items.begin();
 793     const KFileItemList::const_iterator end = items.end();
 794
 795     m_fileCount = 0;
 796     m_folderCount = 0;
 797
 798     while (it != end) {
 799         KFileItem* item = *it;
 800         if (item->isDir()) {
 801             ++m_folderCount;
 802         } else {
 803             ++m_fileCount;
 804         }
 805         ++it;
 806     }
 807
 808     updateStatusBar();
 809
 810     m_blockContentsMovedSignal = false;
 811     QTimer::singleShot(0, this, SLOT(restoreContentsPos()));
 812 }
 813
 814 void DolphinView::generatePreviews(const KFileItemList& items)
 815 {
 816     if (m_controller->showPreview()) {
 817
 818         // Must turn QList<KFileItem *> to QList<KFileItem>...
 819         QList<KFileItem> itemsToPreview;
 820         foreach( KFileItem* it, items )
 821             itemsToPreview.append( *it );
 822
 823         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 824         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 825                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 826     }
 827 }
 828
 829 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 830 {
 831     Q_ASSERT(!item.isNull());
 832     if (item.url().directory() != m_dirLister->url().path()) {
 833         // the preview job is still working on items of an older URL, hence
 834         // the item is not part of the directory model anymore
 835         return;
 836     }
 837
 838     const QModelIndex idx = m_dirModel->indexForItem(item);
 839     if (idx.isValid() && (idx.column() == 0)) {
 840         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 841         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 842             KIconEffect iconEffect;
 843             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 844             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 845         } else {
 846             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 847         }
 848     }
 849 }
 850
 851 void DolphinView::restoreContentsPos()
 852 {
 853     KUrl currentUrl = m_urlNavigator->url();
 854     if (!currentUrl.isEmpty()) {
 855         QAbstractItemView* view = itemView();
 856         // TODO: view->setCurrentItem(m_urlNavigator->currentFileName());
 857         QPoint pos = m_urlNavigator->savedPosition();
 858         view->horizontalScrollBar()->setValue(pos.x());
 859         view->verticalScrollBar()->setValue(pos.y());
 860     }
 861 }
 862
 863 void DolphinView::showInfoMessage(const QString& msg)
 864 {
 865     m_statusBar->setMessage(msg, DolphinStatusBar::Information);
 866 }
 867
 868 void DolphinView::showErrorMessage(const QString& msg)
 869 {
 870     m_statusBar->setMessage(msg, DolphinStatusBar::Error);
 871 }
 872
 873 void DolphinView::emitSelectionChangedSignal()
 874 {
 875     emit selectionChanged(DolphinView::selectedItems());
 876 }
 877
 878 void DolphinView::closeFilterBar()
 879 {
 880     m_filterBar->hide();
 881     emit showFilterBarChanged(false);
 882 }
 883
 884 void DolphinView::startDirLister(const KUrl& url, bool reload)
 885 {
 886     if (!url.isValid()) {
 887         const QString location(url.pathOrUrl());
 888         if (location.isEmpty()) {
 889             m_statusBar->setMessage(i18n("The location is empty."), DolphinStatusBar::Error);
 890         } else {
 891             m_statusBar->setMessage(i18n("The location '%1' is invalid.", location),
 892                                     DolphinStatusBar::Error);
 893         }
 894         return;
 895     }
 896
 897     // Only show the directory loading progress if the status bar does
 898     // not contain another progress information. This means that
 899     // the directory loading progress information has the lowest priority.
 900     const QString progressText(m_statusBar->progressText());
 901     m_showProgress = progressText.isEmpty() ||
 902                      (progressText == i18n("Loading folder..."));
 903     if (m_showProgress) {
 904         m_statusBar->setProgressText(i18n("Loading folder..."));
 905         m_statusBar->setProgress(0);
 906     }
 907
 908     m_cutItemsCache.clear();
 909     m_blockContentsMovedSignal = true;
 910     m_dirLister->stop();
 911
 912     bool openDir = true;
 913     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 914     m_initializeColumnView = false;
 915
 916     if (keepOldDirs) {
 917         if (reload) {
 918             keepOldDirs = false;
 919
 920             const KUrl& dirListerUrl = m_dirLister->url();
 921             if (dirListerUrl.isValid()) {
 922                 const KUrl::List dirs = m_dirLister->directories();
 923                 KUrl url;
 924                 foreach(url, dirs) {
 925                     m_dirLister->updateDirectory(url);
 926                 }
 927                 openDir = false;
 928             }
 929         } else if (m_dirLister->directories().contains(url)) {
 930             // The dir lister contains the directory already, so
 931             // KDirLister::openUrl() may not been invoked twice.
 932             m_dirLister->updateDirectory(url);
 933             openDir = false;
 934         } else {
 935             const KUrl& dirListerUrl = m_dirLister->url();
 936             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 937                 // The current URL is not a child of the dir lister
 938                 // URL. This may happen when e. g. a bookmark has been selected
 939                 // and hence the view must be reset.
 940                 keepOldDirs = false;
 941             }
 942         }
 943     }
 944
 945     if (openDir) {
 946         m_dirLister->openUrl(url, keepOldDirs, reload);
 947     }
 948 }
 949
 950 QString DolphinView::defaultStatusBarText() const
 951 {
 952     return KIO::itemsSummaryString(m_fileCount + m_folderCount,
 953                                    m_fileCount,
 954                                    m_folderCount,
 955                                    0, false);
 956 }
 957
 958 QString DolphinView::selectionStatusBarText() const
 959 {
 960     QString text;
 961     const KFileItemList list = selectedItems();
 962     if (list.isEmpty()) {
 963         // when an item is triggered, it is temporary selected but selectedItems()
 964         // will return an empty list
 965         return QString();
 966     }
 967
 968     int fileCount = 0;
 969     int folderCount = 0;
 970     KIO::filesize_t byteSize = 0;
 971     KFileItemList::const_iterator it = list.begin();
 972     const KFileItemList::const_iterator end = list.end();
 973     while (it != end) {
 974         KFileItem* item = *it;
 975         if (item->isDir()) {
 976             ++folderCount;
 977         } else {
 978             ++fileCount;
 979             byteSize += item->size();
 980         }
 981         ++it;
 982     }
 983
 984     if (folderCount > 0) {
 985         text = i18np("1 Folder selected", "%1 Folders selected", folderCount);
 986         if (fileCount > 0) {
 987             text += ", ";
 988         }
 989     }
 990
 991     if (fileCount > 0) {
 992         const QString sizeText(KIO::convertSize(byteSize));
 993         text += i18np("1 File selected (%2)", "%1 Files selected (%2)", fileCount, sizeText);
 994     }
 995
 996     return text;
 997 }
 998
 999 void DolphinView::showFilterBar(bool show)
1000 {
1001     Q_ASSERT(m_filterBar != 0);
1002     if (show) {
1003         m_filterBar->show();
1004     } else {
1005         m_filterBar->hide();
1006     }
1007 }
1008
1009 void DolphinView::updateStatusBar()
1010 {
1011     // As the item count information is less important
1012     // in comparison with other messages, it should only
1013     // be shown if:
1014     // - the status bar is empty or
1015     // - shows already the item count information or
1016     // - shows only a not very important information
1017     // - if any progress is given don't show the item count info at all
1018     const QString msg(m_statusBar->message());
1019     const bool updateStatusBarMsg = (msg.isEmpty() ||
1020                                      (msg == m_statusBar->defaultText()) ||
1021                                      (m_statusBar->type() == DolphinStatusBar::Information)) &&
1022                                     (m_statusBar->progress() == 100);
1023
1024     const QString text(hasSelection() ? selectionStatusBarText() : defaultStatusBarText());
1025     m_statusBar->setDefaultText(text);
1026
1027     if (updateStatusBarMsg) {
1028         m_statusBar->setMessage(text, DolphinStatusBar::Default);
1029     }
1030 }
1031
1032 void DolphinView::requestActivation()
1033 {
1034     m_mainWindow->setActiveView(this);
1035 }
1036
1037 void DolphinView::changeSelection(const KFileItemList& selection)
1038 {
1039     clearSelection();
1040     if (selection.isEmpty()) {
1041         return;
1042     }
1043     KUrl baseUrl = url();
1044     KUrl url;
1045     QItemSelection new_selection;
1046     foreach(KFileItem* item, selection) {
1047         url = item->url().upUrl();
1048         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1049             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
1050             new_selection.select(index, index);
1051         }
1052     }
1053     itemView()->selectionModel()->select(new_selection,
1054                                          QItemSelectionModel::ClearAndSelect
1055                                          | QItemSelectionModel::Current);
1056 }
1057
1058 void DolphinView::changeNameFilter(const QString& nameFilter)
1059 {
1060     // The name filter of KDirLister does a 'hard' filtering, which
1061     // means that only the items are shown where the names match
1062     // exactly the filter. This is non-transparent for the user, which
1063     // just wants to have a 'soft' filtering: does the name contain
1064     // the filter string?
1065     QString adjustedFilter(nameFilter);
1066     adjustedFilter.insert(0, '*');
1067     adjustedFilter.append('*');
1068
1069     // Use the ProxyModel to filter:
1070     // This code is #ifdefed as setNameFilter behaves
1071     // slightly different than the QSortFilterProxyModel
1072     // as it will not remove directories. I will ask
1073     // our beloved usability experts for input
1074     // -- z.
1075 #if 0
1076     m_dirLister->setNameFilter(adjustedFilter);
1077     m_dirLister->emitChanges();
1078 #else
1079     m_proxyModel->setFilterRegExp(nameFilter);
1080 #endif
1081 }
1082
1083 void DolphinView::openContextMenu(const QPoint& pos)
1084 {
1085     KFileItem* item = 0;
1086
1087     const QModelIndex index = itemView()->indexAt(pos);
1088     if (isValidNameIndex(index)) {
1089         item = fileItem(index);
1090     }
1091
1092     DolphinContextMenu contextMenu(m_mainWindow, item, url());
1093     contextMenu.open();
1094 }
1095
1096 void DolphinView::dropUrls(const KUrl::List& urls,
1097                            const QModelIndex& index,
1098                            QWidget* source)
1099 {
1100     KFileItem* directory = 0;
1101     if (isValidNameIndex(index)) {
1102         KFileItem* item = fileItem(index);
1103         Q_ASSERT(item != 0);
1104         if (item->isDir()) {
1105             // the URLs are dropped above a directory
1106             directory = item;
1107         }
1108     }
1109
1110     if ((directory == 0) && (source == itemView())) {
1111         // The dropping is done into the same viewport where
1112         // the dragging has been started. Just ignore this...
1113         return;
1114     }
1115
1116     const KUrl& destination = (directory == 0) ? url() :
1117                               directory->url();
1118     dropUrls(urls, destination);
1119 }
1120
1121 void DolphinView::dropUrls(const KUrl::List& urls,
1122                            const KUrl& destination)
1123 {
1124     m_mainWindow->dropUrls(urls, destination);
1125 }
1126
1127 void DolphinView::updateSorting(DolphinView::Sorting sorting)
1128 {
1129     ViewProperties props(url());
1130     props.setSorting(sorting);
1131
1132     m_proxyModel->setSorting(sorting);
1133
1134     emit sortingChanged(sorting);
1135 }
1136
1137 void DolphinView::updateSortOrder(Qt::SortOrder order)
1138 {
1139     ViewProperties props(url());
1140     props.setSortOrder(order);
1141
1142     m_proxyModel->setSortOrder(order);
1143
1144     emit sortOrderChanged(order);
1145 }
1146
1147 void DolphinView::emitContentsMoved()
1148 {
1149     if (!m_blockContentsMovedSignal) {
1150         emit contentsMoved(contentsX(), contentsY());
1151     }
1152 }
1153
1154 void DolphinView::updateActivationState()
1155 {
1156     m_urlNavigator->setActive(isActive());
1157     if (isActive()) {
1158         emit urlChanged(url());
1159         emit selectionChanged(selectedItems());
1160     }
1161 }
1162
1163 void DolphinView::updateCutItems()
1164 {
1165     // restore the icons of all previously selected items to the
1166     // original state...
1167     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
1168     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
1169     while (it != end) {
1170         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
1171         if (index.isValid()) {
1172             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
1173         }
1174         ++it;
1175     }
1176     m_cutItemsCache.clear();
1177
1178     // ... and apply an item effect to all currently cut items
1179     applyCutItemEffect();
1180 }
1181
1182 void DolphinView::createView()
1183 {
1184     // delete current view
1185     QAbstractItemView* view = itemView();
1186     if (view != 0) {
1187         m_topLayout->removeWidget(view);
1188         view->close();
1189         if (view == m_iconsView) {
1190             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
1191             m_iconsView->setItemCategorizer(0);
1192             delete categorizer;
1193         }
1194         view->deleteLater();
1195         view = 0;
1196         m_iconsView = 0;
1197         m_detailsView = 0;
1198         m_columnView = 0;
1199         m_fileItemDelegate = 0;
1200     }
1201
1202     Q_ASSERT(m_iconsView == 0);
1203     Q_ASSERT(m_detailsView == 0);
1204     Q_ASSERT(m_columnView == 0);
1205
1206     // ... and recreate it representing the current mode
1207     switch (m_mode) {
1208     case IconsView:
1209         m_iconsView = new DolphinIconsView(this, m_controller);
1210         view = m_iconsView;
1211         break;
1212
1213     case DetailsView:
1214         m_detailsView = new DolphinDetailsView(this, m_controller);
1215         view = m_detailsView;
1216         break;
1217
1218     case ColumnView:
1219         m_columnView = new DolphinColumnView(this, m_controller);
1220         view = m_columnView;
1221         break;
1222     }
1223
1224     Q_ASSERT(view != 0);
1225
1226     m_fileItemDelegate = new KFileItemDelegate(view);
1227     view->setItemDelegate(m_fileItemDelegate);
1228
1229     view->setModel(m_proxyModel);
1230     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
1231
1232     new KMimeTypeResolver(view, m_dirModel);
1233     m_topLayout->insertWidget(1, view);
1234
1235     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
1236             m_controller, SLOT(indicateSelectionChange()));
1237     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
1238             this, SLOT(emitContentsMoved()));
1239     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
1240             this, SLOT(emitContentsMoved()));
1241 }
1242
1243 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
1244 {
1245     QItemSelectionModel* selectionModel = itemView()->selectionModel();
1246     const QAbstractItemModel* itemModel = selectionModel->model();
1247
1248     const QModelIndex topLeft = itemModel->index(0, 0);
1249     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
1250                                     itemModel->columnCount() - 1);
1251
1252     QItemSelection selection(topLeft, bottomRight);
1253     selectionModel->select(selection, flags);
1254 }
1255
1256 QAbstractItemView* DolphinView::itemView() const
1257 {
1258     if (m_detailsView != 0) {
1259         return m_detailsView;
1260     } else if (m_columnView != 0) {
1261         return m_columnView;
1262     }
1263
1264     return m_iconsView;
1265 }
1266
1267 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
1268 {
1269     return index.isValid() && (index.column() == KDirModel::Name);
1270 }
1271
1272 bool DolphinView::isCutItem(const KFileItem& item) const
1273 {
1274     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1275     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
1276
1277     const KUrl& itemUrl = item.url();
1278     KUrl::List::const_iterator it = cutUrls.begin();
1279     const KUrl::List::const_iterator end = cutUrls.end();
1280     while (it != end) {
1281         if (*it == itemUrl) {
1282             return true;
1283         }
1284         ++it;
1285     }
1286
1287     return false;
1288 }
1289
1290 void DolphinView::applyCutItemEffect()
1291 {
1292     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1293     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
1294         return;
1295     }
1296
1297     KFileItemList items(m_dirLister->items());
1298     KFileItemList::const_iterator it = items.begin();
1299     const KFileItemList::const_iterator end = items.end();
1300     while (it != end) {
1301         KFileItem* item = *it;
1302         if (isCutItem(*item)) {
1303             const QModelIndex index = m_dirModel->indexForItem(*item);
1304             const KFileItem* item = m_dirModel->itemForIndex(index);
1305             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
1306             if ((value.type() == QVariant::Icon) && (item != 0)) {
1307                 const QIcon icon(qvariant_cast<QIcon>(value));
1308                 QPixmap pixmap = icon.pixmap(128, 128);
1309
1310                 // remember current pixmap for the item to be able
1311                 // to restore it when other items get cut
1312                 CutItem cutItem;
1313                 cutItem.url = item->url();
1314                 cutItem.pixmap = pixmap;
1315                 m_cutItemsCache.append(cutItem);
1316
1317                 // apply icon effect to the cut item
1318                 KIconEffect iconEffect;
1319                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
1320                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
1321             }
1322         }
1323         ++it;
1324     }
1325 }
1326
1327 #include "dolphinview.moc"