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 <kglobalsettings.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 "dolphinstatusbar.h"
  48 #include "dolphinmainwindow.h"
  49 #include "dolphindirlister.h"
  50 #include "dolphinsortfilterproxymodel.h"
  51 #include "dolphindetailsview.h"
  52 #include "dolphiniconsview.h"
  53 #include "dolphincontextmenu.h"
  54 #include "dolphinitemcategorizer.h"
  55 #include "filterbar.h"
  56 #include "renamedialog.h"
  57 #include "kurlnavigator.h"
  58 #include "viewproperties.h"
  59 #include "dolphinsettings.h"
  60 #include "dolphin_generalsettings.h"
  61
  62 DolphinView::DolphinView(DolphinMainWindow* mainWindow,
  63                          QWidget* parent,
  64                          const KUrl& url,
  65                          Mode mode,
  66                          bool showHiddenFiles) :
  67     QWidget(parent),
  68     m_showProgress(false),
  69     m_blockContentsMovedSignal(false),
  70     m_initializeColumnView(false),
  71     m_mode(mode),
  72     m_iconSize(0),
  73     m_folderCount(0),
  74     m_fileCount(0),
  75     m_mainWindow(mainWindow),
  76     m_topLayout(0),
  77     m_urlNavigator(0),
  78     m_controller(0),
  79     m_iconsView(0),
  80     m_detailsView(0),
  81     m_columnView(0),
  82     m_fileItemDelegate(0),
  83     m_filterBar(0),
  84     m_statusBar(0),
  85     m_dirModel(0),
  86     m_dirLister(0),
  87     m_proxyModel(0)
  88 {
  89     hide();
  90     setFocusPolicy(Qt::StrongFocus);
  91     m_topLayout = new QVBoxLayout(this);
  92     m_topLayout->setSpacing(0);
  93     m_topLayout->setMargin(0);
  94
  95     connect(m_mainWindow, SIGNAL(activeViewChanged()),
  96             this, SLOT(updateActivationState()));
  97
  98     QClipboard* clipboard = QApplication::clipboard();
  99     connect(clipboard, SIGNAL(dataChanged()),
 100             this, SLOT(updateCutItems()));
 101
 102     m_urlNavigator = new KUrlNavigator(DolphinSettings::instance().placesModel(), url, this);
 103     m_urlNavigator->setUrlEditable(DolphinSettings::instance().generalSettings()->editableUrl());
 104     m_urlNavigator->setHomeUrl(DolphinSettings::instance().generalSettings()->homeUrl());
 105     connect(m_urlNavigator, SIGNAL(urlChanged(const KUrl&)),
 106             this, SLOT(changeDirectory(const KUrl&)));
 107     connect(m_urlNavigator, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&)),
 108             this, SLOT(dropUrls(const KUrl::List&, const KUrl&)));
 109     connect(m_urlNavigator, SIGNAL(activated()),
 110             this, SLOT(requestActivation()));
 111     connect(this, SIGNAL(contentsMoved(int, int)),
 112             m_urlNavigator, SLOT(savePosition(int, int)));
 113
 114     m_statusBar = new DolphinStatusBar(this);
 115
 116     m_dirLister = new DolphinDirLister();
 117     m_dirLister->setAutoUpdate(true);
 118     m_dirLister->setMainWindow(this);
 119     m_dirLister->setShowingDotFiles(showHiddenFiles);
 120     m_dirLister->setDelayedMimeTypes(true);
 121
 122     connect(m_dirLister, SIGNAL(clear()),
 123             this, SLOT(updateStatusBar()));
 124     connect(m_dirLister, SIGNAL(percent(int)),
 125             this, SLOT(updateProgress(int)));
 126     connect(m_dirLister, SIGNAL(deleteItem(KFileItem*)),
 127             this, SLOT(updateStatusBar()));
 128     connect(m_dirLister, SIGNAL(completed()),
 129             this, SLOT(updateItemCount()));
 130     connect(m_dirLister, SIGNAL(completed()),
 131             this, SLOT(updateCutItems()));
 132     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 133             this, SLOT(generatePreviews(const KFileItemList&)));
 134     connect(m_dirLister, SIGNAL(infoMessage(const QString&)),
 135             this, SLOT(showInfoMessage(const QString&)));
 136     connect(m_dirLister, SIGNAL(errorMessage(const QString&)),
 137             this, SLOT(showErrorMessage(const QString&)));
 138
 139     m_dirModel = new KDirModel();
 140     m_dirModel->setDirLister(m_dirLister);
 141     m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
 142
 143     m_proxyModel = new DolphinSortFilterProxyModel(this);
 144     m_proxyModel->setSourceModel(m_dirModel);
 145
 146     m_controller = new DolphinController(this);
 147     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 148             this, SLOT(openContextMenu(const QPoint&)));
 149     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&, QWidget*)),
 150             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&, QWidget*)));
 151     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 152             this, SLOT(updateSorting(DolphinView::Sorting)));
 153     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 154             this, SLOT(updateSortOrder(Qt::SortOrder)));
 155     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 156             this, SLOT(triggerItem(const QModelIndex&)));
 157     connect(m_controller, SIGNAL(selectionChanged()),
 158             this, SLOT(emitSelectionChangedSignal()));
 159     connect(m_controller, SIGNAL(activated()),
 160             this, SLOT(requestActivation()));
 161     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 162             this, SLOT(showHoverInformation(const QModelIndex&)));
 163     connect(m_controller, SIGNAL(viewportEntered()),
 164             this, SLOT(clearHoverInformation()));
 165
 166     createView();
 167
 168     m_iconSize = K3Icon::SizeMedium;
 169
 170     m_filterBar = new FilterBar(this);
 171     m_filterBar->hide();
 172     connect(m_filterBar, SIGNAL(filterChanged(const QString&)),
 173             this, SLOT(changeNameFilter(const QString&)));
 174     connect(m_filterBar, SIGNAL(closeRequest()),
 175             this, SLOT(closeFilterBar()));
 176
 177     m_topLayout->addWidget(m_urlNavigator);
 178     m_topLayout->addWidget(itemView());
 179     m_topLayout->addWidget(m_filterBar);
 180     m_topLayout->addWidget(m_statusBar);
 181 }
 182
 183 DolphinView::~DolphinView()
 184 {
 185     delete m_dirLister;
 186     m_dirLister = 0;
 187 }
 188
 189 void DolphinView::setUrl(const KUrl& url)
 190 {
 191     m_urlNavigator->setUrl(url);
 192     m_controller->setUrl(url);
 193 }
 194
 195 const KUrl& DolphinView::url() const
 196 {
 197     return m_urlNavigator->url();
 198 }
 199
 200 bool DolphinView::isActive() const
 201 {
 202     return m_mainWindow->activeView() == this;
 203 }
 204
 205 void DolphinView::setMode(Mode mode)
 206 {
 207     if (mode == m_mode) {
 208         return; // the wished mode is already set
 209     }
 210
 211     m_mode = mode;
 212
 213     if (isColumnViewActive()) {
 214         // When changing the mode in the column view, it makes sense
 215         // to go back to the root URL of the column view automatically.
 216         // Otherwise there it would not be possible to turn off the column view
 217         // without focusing the first column.
 218         setUrl(m_dirLister->url());
 219     }
 220
 221     ViewProperties props(m_urlNavigator->url());
 222     props.setViewMode(m_mode);
 223
 224     createView();
 225     startDirLister(m_urlNavigator->url());
 226
 227     emit modeChanged();
 228 }
 229
 230 DolphinView::Mode DolphinView::mode() const
 231 {
 232     return m_mode;
 233 }
 234
 235 void DolphinView::setShowPreview(bool show)
 236 {
 237     ViewProperties props(m_urlNavigator->url());
 238     props.setShowPreview(show);
 239
 240     m_controller->setShowPreview(show);
 241     emit showPreviewChanged();
 242
 243     startDirLister(m_urlNavigator->url(), true);
 244 }
 245
 246 bool DolphinView::showPreview() const
 247 {
 248     return m_controller->showPreview();
 249 }
 250
 251 void DolphinView::setShowHiddenFiles(bool show)
 252 {
 253     if (m_dirLister->showingDotFiles() == show) {
 254         return;
 255     }
 256
 257     ViewProperties props(m_urlNavigator->url());
 258     props.setShowHiddenFiles(show);
 259
 260     m_dirLister->setShowingDotFiles(show);
 261     emit showHiddenFilesChanged();
 262
 263     startDirLister(m_urlNavigator->url(), true);
 264 }
 265
 266 bool DolphinView::showHiddenFiles() const
 267 {
 268     return m_dirLister->showingDotFiles();
 269 }
 270
 271 void DolphinView::setCategorizedSorting(bool categorized)
 272 {
 273     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 274         return;
 275     }
 276
 277     Q_ASSERT(m_iconsView != 0);
 278     if (categorized) {
 279         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 280         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 281     } else {
 282         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 283         m_iconsView->setItemCategorizer(0);
 284         delete categorizer;
 285     }
 286
 287     ViewProperties props(m_urlNavigator->url());
 288     props.setCategorizedSorting(categorized);
 289     props.save();
 290
 291     emit categorizedSortingChanged();
 292 }
 293
 294 bool DolphinView::categorizedSorting() const
 295 {
 296     if (!supportsCategorizedSorting()) {
 297         return false;
 298     }
 299
 300     Q_ASSERT(m_iconsView != 0);
 301     return m_iconsView->itemCategorizer() != 0;
 302 }
 303
 304 bool DolphinView::supportsCategorizedSorting() const
 305 {
 306     return m_iconsView != 0;
 307 }
 308
 309 void DolphinView::renameSelectedItems()
 310 {
 311     DolphinView* view = mainWindow()->activeView();
 312     const KUrl::List urls = selectedUrls();
 313     if (urls.count() > 1) {
 314         // More than one item has been selected for renaming. Open
 315         // a rename dialog and rename all items afterwards.
 316         RenameDialog dialog(urls);
 317         if (dialog.exec() == QDialog::Rejected) {
 318             return;
 319         }
 320
 321         const QString& newName = dialog.newName();
 322         if (newName.isEmpty()) {
 323             view->statusBar()->setMessage(dialog.errorString(),
 324                                           DolphinStatusBar::Error);
 325         } else {
 326             // TODO: check how this can be integrated into KonqUndoManager/KonqOperations
 327             // as one operation instead of n rename operations like it is done now...
 328             Q_ASSERT(newName.contains('#'));
 329
 330             // iterate through all selected items and rename them...
 331             const int replaceIndex = newName.indexOf('#');
 332             Q_ASSERT(replaceIndex >= 0);
 333             int index = 1;
 334
 335             KUrl::List::const_iterator it = urls.begin();
 336             KUrl::List::const_iterator end = urls.end();
 337             while (it != end) {
 338                 const KUrl& oldUrl = *it;
 339                 QString number;
 340                 number.setNum(index++);
 341
 342                 QString name(newName);
 343                 name.replace(replaceIndex, 1, number);
 344
 345                 if (oldUrl.fileName() != name) {
 346                     KUrl newUrl = oldUrl;
 347                     newUrl.setFileName(name);
 348                     m_mainWindow->rename(oldUrl, newUrl);
 349                 }
 350                 ++it;
 351             }
 352         }
 353     } else {
 354         // Only one item has been selected for renaming. Use the custom
 355         // renaming mechanism from the views.
 356         Q_ASSERT(urls.count() == 1);
 357
 358         // TODO: Think about using KFileItemDelegate as soon as it supports editing.
 359         // Currently the RenameDialog is used, but I'm not sure whether inline renaming
 360         // is a benefit for the user at all -> let's wait for some input first...
 361         RenameDialog dialog(urls);
 362         if (dialog.exec() == QDialog::Rejected) {
 363             return;
 364         }
 365
 366         const QString& newName = dialog.newName();
 367         if (newName.isEmpty()) {
 368             view->statusBar()->setMessage(dialog.errorString(),
 369                                           DolphinStatusBar::Error);
 370         } else {
 371             const KUrl& oldUrl = urls.first();
 372             KUrl newUrl = oldUrl;
 373             newUrl.setFileName(newName);
 374             m_mainWindow->rename(oldUrl, newUrl);
 375         }
 376     }
 377 }
 378
 379 void DolphinView::selectAll()
 380 {
 381     selectAll(QItemSelectionModel::Select);
 382 }
 383
 384 void DolphinView::invertSelection()
 385 {
 386     selectAll(QItemSelectionModel::Toggle);
 387 }
 388
 389 DolphinStatusBar* DolphinView::statusBar() const
 390 {
 391     return m_statusBar;
 392 }
 393
 394 int DolphinView::contentsX() const
 395 {
 396     return itemView()->horizontalScrollBar()->value();
 397 }
 398
 399 int DolphinView::contentsY() const
 400 {
 401     return itemView()->verticalScrollBar()->value();
 402 }
 403
 404 void DolphinView::emitRequestItemInfo(const KUrl& url)
 405 {
 406     emit requestItemInfo(url);
 407 }
 408
 409 bool DolphinView::isFilterBarVisible() const
 410 {
 411     return m_filterBar->isVisible();
 412 }
 413
 414 bool DolphinView::isUrlEditable() const
 415 {
 416     return m_urlNavigator->isUrlEditable();
 417 }
 418
 419 void DolphinView::zoomIn()
 420 {
 421     m_controller->triggerZoomIn();
 422 }
 423
 424 void DolphinView::zoomOut()
 425 {
 426     m_controller->triggerZoomOut();
 427 }
 428
 429 bool DolphinView::isZoomInPossible() const
 430 {
 431     return m_controller->isZoomInPossible();
 432 }
 433
 434 bool DolphinView::isZoomOutPossible() const
 435 {
 436     return m_controller->isZoomOutPossible();
 437 }
 438
 439 void DolphinView::setSorting(Sorting sorting)
 440 {
 441     if (sorting != this->sorting()) {
 442         updateSorting(sorting);
 443     }
 444 }
 445
 446 DolphinView::Sorting DolphinView::sorting() const
 447 {
 448     return m_proxyModel->sorting();
 449 }
 450
 451 void DolphinView::setSortOrder(Qt::SortOrder order)
 452 {
 453     if (sortOrder() != order) {
 454         updateSortOrder(order);
 455     }
 456 }
 457
 458 Qt::SortOrder DolphinView::sortOrder() const
 459 {
 460     return m_proxyModel->sortOrder();
 461 }
 462
 463 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 464 {
 465     ViewProperties props(m_urlNavigator->url());
 466     props.setAdditionalInfo(info);
 467
 468     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 469     m_fileItemDelegate->setAdditionalInformation(info);
 470
 471     emit additionalInfoChanged(info);
 472     startDirLister(m_urlNavigator->url(), true);
 473 }
 474
 475 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 476 {
 477     return m_fileItemDelegate->additionalInformation();
 478 }
 479
 480 void DolphinView::goBack()
 481 {
 482     m_urlNavigator->goBack();
 483 }
 484
 485 void DolphinView::goForward()
 486 {
 487     m_urlNavigator->goForward();
 488 }
 489
 490 void DolphinView::goUp()
 491 {
 492     m_urlNavigator->goUp();
 493 }
 494
 495 void DolphinView::goHome()
 496 {
 497     m_urlNavigator->goHome();
 498 }
 499
 500 void DolphinView::setUrlEditable(bool editable)
 501 {
 502     m_urlNavigator->setUrlEditable(editable);
 503 }
 504
 505 bool DolphinView::hasSelection() const
 506 {
 507     return itemView()->selectionModel()->hasSelection();
 508 }
 509
 510 void DolphinView::clearSelection()
 511 {
 512     itemView()->selectionModel()->clear();
 513 }
 514
 515 KFileItemList DolphinView::selectedItems() const
 516 {
 517     const QAbstractItemView* view = itemView();
 518
 519     // Our view has a selection, we will map them back to the DirModel
 520     // and then fill the KFileItemList.
 521     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 522
 523     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 524     KFileItemList itemList;
 525
 526     const QModelIndexList indexList = selection.indexes();
 527     QModelIndexList::const_iterator end = indexList.end();
 528     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 529         Q_ASSERT((*it).isValid());
 530
 531         KFileItem* item = m_dirModel->itemForIndex(*it);
 532         if (item != 0) {
 533             itemList.append(item);
 534         }
 535     }
 536
 537     return itemList;
 538 }
 539
 540 KUrl::List DolphinView::selectedUrls() const
 541 {
 542     KUrl::List urls;
 543
 544     const KFileItemList list = selectedItems();
 545     KFileItemList::const_iterator it = list.begin();
 546     const KFileItemList::const_iterator end = list.end();
 547     while (it != end) {
 548         KFileItem* item = *it;
 549         urls.append(item->url());
 550         ++it;
 551     }
 552
 553     return urls;
 554 }
 555
 556 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 557 {
 558     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 559     return m_dirModel->itemForIndex(dirModelIndex);
 560 }
 561
 562 void DolphinView::rename(const KUrl& source, const QString& newName)
 563 {
 564     bool ok = false;
 565
 566     if (newName.isEmpty() || (source.fileName() == newName)) {
 567         return;
 568     }
 569
 570     KUrl dest(source.upUrl());
 571     dest.addPath(newName);
 572
 573     const bool destExists = KIO::NetAccess::exists(dest,
 574                             false,
 575                             mainWindow()->activeView());
 576     if (destExists) {
 577         // the destination already exists, hence ask the user
 578         // how to proceed...
 579         KIO::RenameDialog renameDialog(this,
 580                                        i18n("File Already Exists"),
 581                                        source.path(),
 582                                        dest.path(),
 583                                        KIO::M_OVERWRITE);
 584         switch (renameDialog.exec()) {
 585         case KIO::R_OVERWRITE:
 586             // the destination should be overwritten
 587             ok = KIO::NetAccess::file_move(source, dest, -1, true);
 588             break;
 589
 590         case KIO::R_RENAME: {
 591             // a new name for the destination has been used
 592             KUrl newDest(renameDialog.newDestUrl());
 593             ok = KIO::NetAccess::file_move(source, newDest);
 594             break;
 595         }
 596
 597         default:
 598             // the renaming operation has been canceled
 599             return;
 600         }
 601     } else {
 602         // no destination exists, hence just move the file to
 603         // do the renaming
 604         ok = KIO::NetAccess::file_move(source, dest);
 605     }
 606
 607     const QString destFileName = dest.fileName();
 608     if (ok) {
 609         m_statusBar->setMessage(i18n("Renamed file '%1' to '%2'.", source.fileName(), destFileName),
 610                                 DolphinStatusBar::OperationCompleted);
 611
 612         KonqOperations::rename(this, source, destFileName);
 613     } else {
 614         m_statusBar->setMessage(i18n("Renaming of file '%1' to '%2' failed.", source.fileName(), destFileName),
 615                                 DolphinStatusBar::Error);
 616     }
 617 }
 618
 619 void DolphinView::reload()
 620 {
 621     const KUrl& url = m_urlNavigator->url();
 622     changeDirectory(url);
 623     startDirLister(url, true);
 624 }
 625
 626 void DolphinView::refresh()
 627 {
 628     createView();
 629     reload();
 630 }
 631
 632 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 633 {
 634     QWidget::mouseReleaseEvent(event);
 635     mainWindow()->setActiveView(this);
 636 }
 637
 638 DolphinMainWindow* DolphinView::mainWindow() const
 639 {
 640     return m_mainWindow;
 641 }
 642
 643 void DolphinView::changeDirectory(const KUrl& url)
 644 {
 645     if (!isActive()) {
 646         requestActivation();
 647     }
 648
 649     const ViewProperties props(url);
 650
 651     const Mode mode = props.viewMode();
 652     bool changeMode = (m_mode != mode);
 653     if (changeMode && isColumnViewActive()) {
 654         // The column view is active. Only change the
 655         // mode if the current URL is no child of the column view.
 656         if (m_dirLister->url().isParentOf(url)) {
 657             changeMode = false;
 658         }
 659     }
 660
 661     if (changeMode) {
 662         m_mode = mode;
 663         createView();
 664         emit modeChanged();
 665
 666         if (m_mode == ColumnView) {
 667             // The mode has been changed to the Column View. When starting the dir
 668             // lister with DolphinView::startDirLister() it is important to give a
 669             // hint that the dir lister may not keep the current directory
 670             // although this is the default for showing a hierarchy.
 671             m_initializeColumnView = true;
 672         }
 673     }
 674
 675     const bool showHiddenFiles = props.showHiddenFiles();
 676     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 677         m_dirLister->setShowingDotFiles(showHiddenFiles);
 678         emit showHiddenFilesChanged();
 679     }
 680
 681     const bool categorized = props.categorizedSorting();
 682     if (categorized != categorizedSorting()) {
 683         if (supportsCategorizedSorting()) {
 684             Q_ASSERT(m_iconsView != 0);
 685             if (categorized) {
 686                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 687                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 688             } else {
 689                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 690                 m_iconsView->setItemCategorizer(0);
 691                 delete categorizer;
 692             }
 693         }
 694         emit categorizedSortingChanged();
 695     }
 696
 697     const DolphinView::Sorting sorting = props.sorting();
 698     if (sorting != m_proxyModel->sorting()) {
 699         m_proxyModel->setSorting(sorting);
 700         emit sortingChanged(sorting);
 701     }
 702
 703     const Qt::SortOrder sortOrder = props.sortOrder();
 704     if (sortOrder != m_proxyModel->sortOrder()) {
 705         m_proxyModel->setSortOrder(sortOrder);
 706         emit sortOrderChanged(sortOrder);
 707     }
 708
 709     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 710     if (info != m_fileItemDelegate->additionalInformation()) {
 711         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 712         m_fileItemDelegate->setAdditionalInformation(info);
 713         emit additionalInfoChanged(info);
 714     }
 715
 716     const bool showPreview = props.showPreview();
 717     if (showPreview != m_controller->showPreview()) {
 718         m_controller->setShowPreview(showPreview);
 719         emit showPreviewChanged();
 720     }
 721
 722     startDirLister(url);
 723     emit urlChanged(url);
 724
 725     m_statusBar->clear();
 726 }
 727
 728 void DolphinView::triggerItem(const QModelIndex& index)
 729 {
 730     if (!isValidNameIndex(index)) {
 731         return;
 732     }
 733
 734     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 735     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 736         // items are selected by the user, hence don't trigger the
 737         // item specified by 'index'
 738         return;
 739     }
 740
 741     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 742     if (item == 0) {
 743         return;
 744     }
 745
 746     // Prefer the local path over the URL. This assures that the
 747     // volume space information is correct. Assuming that the URL is media:/sda1,
 748     // and the local path is /windows/C: For the URL the space info is related
 749     // to the root partition (and hence wrong) and for the local path the space
 750     // info is related to the windows partition (-> correct).
 751     const QString localPath(item->localPath());
 752     KUrl url;
 753     if (localPath.isEmpty()) {
 754         url = item->url();
 755     } else {
 756         url = localPath;
 757     }
 758
 759     if (item->isDir()) {
 760         setUrl(url);
 761     } else if (item->isFile()) {
 762         // allow to browse through ZIP and tar files
 763         KMimeType::Ptr mime = item->mimeTypePtr();
 764         if (mime->is("application/zip")) {
 765             url.setProtocol("zip");
 766             setUrl(url);
 767         } else if (mime->is("application/x-tar") ||
 768                    mime->is("application/x-tarz") ||
 769                    mime->is("application/x-bzip-compressed-tar") ||
 770                    mime->is("application/x-compressed-tar") ||
 771                    mime->is("application/x-tzo")) {
 772             url.setProtocol("tar");
 773             setUrl(url);
 774         } else {
 775             item->run();
 776         }
 777     } else {
 778         item->run();
 779     }
 780 }
 781
 782 void DolphinView::updateProgress(int percent)
 783 {
 784     if (m_showProgress) {
 785         m_statusBar->setProgress(percent);
 786     }
 787 }
 788
 789 void DolphinView::updateItemCount()
 790 {
 791     if (m_showProgress) {
 792         m_statusBar->setProgressText(QString());
 793         m_statusBar->setProgress(100);
 794         m_showProgress = false;
 795     }
 796
 797     KFileItemList items(m_dirLister->items());
 798     KFileItemList::const_iterator it = items.begin();
 799     const KFileItemList::const_iterator end = items.end();
 800
 801     m_fileCount = 0;
 802     m_folderCount = 0;
 803
 804     while (it != end) {
 805         KFileItem* item = *it;
 806         if (item->isDir()) {
 807             ++m_folderCount;
 808         } else {
 809             ++m_fileCount;
 810         }
 811         ++it;
 812     }
 813
 814     updateStatusBar();
 815
 816     m_blockContentsMovedSignal = false;
 817     QTimer::singleShot(0, this, SLOT(restoreContentsPos()));
 818 }
 819
 820 void DolphinView::generatePreviews(const KFileItemList& items)
 821 {
 822     if (m_controller->showPreview()) {
 823
 824         // Must turn QList<KFileItem *> to QList<KFileItem>...
 825         QList<KFileItem> itemsToPreview;
 826         foreach( KFileItem* it, items )
 827             itemsToPreview.append( *it );
 828
 829         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 830         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 831                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 832     }
 833 }
 834
 835 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 836 {
 837     Q_ASSERT(!item.isNull());
 838     if (item.url().directory() != m_dirLister->url().path()) {
 839         // the preview job is still working on items of an older URL, hence
 840         // the item is not part of the directory model anymore
 841         return;
 842     }
 843
 844     const QModelIndex idx = m_dirModel->indexForItem(item);
 845     if (idx.isValid() && (idx.column() == 0)) {
 846         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 847         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 848             KIconEffect iconEffect;
 849             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 850             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 851         } else {
 852             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 853         }
 854     }
 855 }
 856
 857 void DolphinView::restoreContentsPos()
 858 {
 859     KUrl currentUrl = m_urlNavigator->url();
 860     if (!currentUrl.isEmpty()) {
 861         QAbstractItemView* view = itemView();
 862         // TODO: view->setCurrentItem(m_urlNavigator->currentFileName());
 863         QPoint pos = m_urlNavigator->savedPosition();
 864         view->horizontalScrollBar()->setValue(pos.x());
 865         view->verticalScrollBar()->setValue(pos.y());
 866     }
 867 }
 868
 869 void DolphinView::showInfoMessage(const QString& msg)
 870 {
 871     m_statusBar->setMessage(msg, DolphinStatusBar::Information);
 872 }
 873
 874 void DolphinView::showErrorMessage(const QString& msg)
 875 {
 876     m_statusBar->setMessage(msg, DolphinStatusBar::Error);
 877 }
 878
 879 void DolphinView::emitSelectionChangedSignal()
 880 {
 881     emit selectionChanged(DolphinView::selectedItems());
 882 }
 883
 884 void DolphinView::closeFilterBar()
 885 {
 886     m_filterBar->hide();
 887     emit showFilterBarChanged(false);
 888 }
 889
 890 void DolphinView::startDirLister(const KUrl& url, bool reload)
 891 {
 892     if (!url.isValid()) {
 893         const QString location(url.pathOrUrl());
 894         if (location.isEmpty()) {
 895             m_statusBar->setMessage(i18n("The location is empty."), DolphinStatusBar::Error);
 896         } else {
 897             m_statusBar->setMessage(i18n("The location '%1' is invalid.", location),
 898                                     DolphinStatusBar::Error);
 899         }
 900         return;
 901     }
 902
 903     // Only show the directory loading progress if the status bar does
 904     // not contain another progress information. This means that
 905     // the directory loading progress information has the lowest priority.
 906     const QString progressText(m_statusBar->progressText());
 907     m_showProgress = progressText.isEmpty() ||
 908                      (progressText == i18n("Loading folder..."));
 909     if (m_showProgress) {
 910         m_statusBar->setProgressText(i18n("Loading folder..."));
 911         m_statusBar->setProgress(0);
 912     }
 913
 914     m_cutItemsCache.clear();
 915     m_blockContentsMovedSignal = true;
 916     m_dirLister->stop();
 917
 918     bool openDir = true;
 919     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 920     m_initializeColumnView = false;
 921
 922     if (keepOldDirs) {
 923         if (reload) {
 924             keepOldDirs = false;
 925
 926             const KUrl& dirListerUrl = m_dirLister->url();
 927             if (dirListerUrl.isValid()) {
 928                 const KUrl::List dirs = m_dirLister->directories();
 929                 KUrl url;
 930                 foreach(url, dirs) {
 931                     m_dirLister->updateDirectory(url);
 932                 }
 933                 openDir = false;
 934             }
 935         } else if (m_dirLister->directories().contains(url)) {
 936             // The dir lister contains the directory already, so
 937             // KDirLister::openUrl() may not been invoked twice.
 938             m_dirLister->updateDirectory(url);
 939             openDir = false;
 940         } else {
 941             const KUrl& dirListerUrl = m_dirLister->url();
 942             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 943                 // The current URL is not a child of the dir lister
 944                 // URL. This may happen when e. g. a bookmark has been selected
 945                 // and hence the view must be reset.
 946                 keepOldDirs = false;
 947             }
 948         }
 949     }
 950
 951     if (openDir) {
 952         m_dirLister->openUrl(url, keepOldDirs, reload);
 953     }
 954 }
 955
 956 QString DolphinView::defaultStatusBarText() const
 957 {
 958     return KIO::itemsSummaryString(m_fileCount + m_folderCount,
 959                                    m_fileCount,
 960                                    m_folderCount,
 961                                    0, false);
 962 }
 963
 964 QString DolphinView::selectionStatusBarText() const
 965 {
 966     QString text;
 967     const KFileItemList list = selectedItems();
 968     if (list.isEmpty()) {
 969         // when an item is triggered, it is temporary selected but selectedItems()
 970         // will return an empty list
 971         return QString();
 972     }
 973
 974     int fileCount = 0;
 975     int folderCount = 0;
 976     KIO::filesize_t byteSize = 0;
 977     KFileItemList::const_iterator it = list.begin();
 978     const KFileItemList::const_iterator end = list.end();
 979     while (it != end) {
 980         KFileItem* item = *it;
 981         if (item->isDir()) {
 982             ++folderCount;
 983         } else {
 984             ++fileCount;
 985             byteSize += item->size();
 986         }
 987         ++it;
 988     }
 989
 990     if (folderCount > 0) {
 991         text = i18np("1 Folder selected", "%1 Folders selected", folderCount);
 992         if (fileCount > 0) {
 993             text += ", ";
 994         }
 995     }
 996
 997     if (fileCount > 0) {
 998         const QString sizeText(KIO::convertSize(byteSize));
 999         text += i18np("1 File selected (%2)", "%1 Files selected (%2)", fileCount, sizeText);
1000     }
1001
1002     return text;
1003 }
1004
1005 void DolphinView::showFilterBar(bool show)
1006 {
1007     Q_ASSERT(m_filterBar != 0);
1008     if (show) {
1009         m_filterBar->show();
1010     } else {
1011         m_filterBar->hide();
1012     }
1013 }
1014
1015 void DolphinView::updateStatusBar()
1016 {
1017     // As the item count information is less important
1018     // in comparison with other messages, it should only
1019     // be shown if:
1020     // - the status bar is empty or
1021     // - shows already the item count information or
1022     // - shows only a not very important information
1023     // - if any progress is given don't show the item count info at all
1024     const QString msg(m_statusBar->message());
1025     const bool updateStatusBarMsg = (msg.isEmpty() ||
1026                                      (msg == m_statusBar->defaultText()) ||
1027                                      (m_statusBar->type() == DolphinStatusBar::Information)) &&
1028                                     (m_statusBar->progress() == 100);
1029
1030     const QString text(hasSelection() ? selectionStatusBarText() : defaultStatusBarText());
1031     m_statusBar->setDefaultText(text);
1032
1033     if (updateStatusBarMsg) {
1034         m_statusBar->setMessage(text, DolphinStatusBar::Default);
1035     }
1036 }
1037
1038 void DolphinView::requestActivation()
1039 {
1040     m_mainWindow->setActiveView(this);
1041 }
1042
1043 void DolphinView::changeSelection(const KFileItemList& selection)
1044 {
1045     clearSelection();
1046     if (selection.isEmpty()) {
1047         return;
1048     }
1049     KUrl baseUrl = url();
1050     KUrl url;
1051     QItemSelection new_selection;
1052     foreach(KFileItem* item, selection) {
1053         url = item->url().upUrl();
1054         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1055             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
1056             new_selection.select(index, index);
1057         }
1058     }
1059     itemView()->selectionModel()->select(new_selection,
1060                                          QItemSelectionModel::ClearAndSelect
1061                                          | QItemSelectionModel::Current);
1062 }
1063
1064 void DolphinView::changeNameFilter(const QString& nameFilter)
1065 {
1066     // The name filter of KDirLister does a 'hard' filtering, which
1067     // means that only the items are shown where the names match
1068     // exactly the filter. This is non-transparent for the user, which
1069     // just wants to have a 'soft' filtering: does the name contain
1070     // the filter string?
1071     QString adjustedFilter(nameFilter);
1072     adjustedFilter.insert(0, '*');
1073     adjustedFilter.append('*');
1074
1075     // Use the ProxyModel to filter:
1076     // This code is #ifdefed as setNameFilter behaves
1077     // slightly different than the QSortFilterProxyModel
1078     // as it will not remove directories. I will ask
1079     // our beloved usability experts for input
1080     // -- z.
1081 #if 0
1082     m_dirLister->setNameFilter(adjustedFilter);
1083     m_dirLister->emitChanges();
1084 #else
1085     m_proxyModel->setFilterRegExp(nameFilter);
1086 #endif
1087 }
1088
1089 void DolphinView::openContextMenu(const QPoint& pos)
1090 {
1091     KFileItem* item = 0;
1092
1093     const QModelIndex index = itemView()->indexAt(pos);
1094     if (isValidNameIndex(index)) {
1095         item = fileItem(index);
1096     }
1097
1098     DolphinContextMenu contextMenu(m_mainWindow, item, url());
1099     contextMenu.open();
1100 }
1101
1102 void DolphinView::dropUrls(const KUrl::List& urls,
1103                            const QModelIndex& index,
1104                            QWidget* source)
1105 {
1106     KFileItem* directory = 0;
1107     if (isValidNameIndex(index)) {
1108         KFileItem* item = fileItem(index);
1109         Q_ASSERT(item != 0);
1110         if (item->isDir()) {
1111             // the URLs are dropped above a directory
1112             directory = item;
1113         }
1114     }
1115
1116     if ((directory == 0) && (source == itemView())) {
1117         // The dropping is done into the same viewport where
1118         // the dragging has been started. Just ignore this...
1119         return;
1120     }
1121
1122     const KUrl& destination = (directory == 0) ? url() :
1123                               directory->url();
1124     dropUrls(urls, destination);
1125 }
1126
1127 void DolphinView::dropUrls(const KUrl::List& urls,
1128                            const KUrl& destination)
1129 {
1130     m_mainWindow->dropUrls(urls, destination);
1131 }
1132
1133 void DolphinView::updateSorting(DolphinView::Sorting sorting)
1134 {
1135     ViewProperties props(url());
1136     props.setSorting(sorting);
1137
1138     m_proxyModel->setSorting(sorting);
1139
1140     emit sortingChanged(sorting);
1141 }
1142
1143 void DolphinView::updateSortOrder(Qt::SortOrder order)
1144 {
1145     ViewProperties props(url());
1146     props.setSortOrder(order);
1147
1148     m_proxyModel->setSortOrder(order);
1149
1150     emit sortOrderChanged(order);
1151 }
1152
1153 void DolphinView::emitContentsMoved()
1154 {
1155     if (!m_blockContentsMovedSignal) {
1156         emit contentsMoved(contentsX(), contentsY());
1157     }
1158 }
1159
1160 void DolphinView::updateActivationState()
1161 {
1162     m_urlNavigator->setActive(isActive());
1163
1164     QColor color = KGlobalSettings::baseColor();
1165     if (isActive()) {
1166         emit urlChanged(url());
1167         emit selectionChanged(selectedItems());
1168     } else {
1169         // darken the background if the view is inactive
1170         // TODO: does not work for a black background
1171         color = color.darker(105);
1172     }
1173
1174     QWidget* viewport = itemView()->viewport();
1175     QPalette palette;
1176     palette.setColor(viewport->backgroundRole(), color);
1177     viewport->setPalette(palette);
1178
1179     update();
1180 }
1181
1182 void DolphinView::updateCutItems()
1183 {
1184     // restore the icons of all previously selected items to the
1185     // original state...
1186     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
1187     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
1188     while (it != end) {
1189         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
1190         if (index.isValid()) {
1191             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
1192         }
1193         ++it;
1194     }
1195     m_cutItemsCache.clear();
1196
1197     // ... and apply an item effect to all currently cut items
1198     applyCutItemEffect();
1199 }
1200
1201 void DolphinView::showHoverInformation(const QModelIndex& index)
1202 {
1203     if (hasSelection()) {
1204         return;
1205     }
1206
1207     const KFileItem* item = fileItem(index);
1208     if (item != 0) {
1209         m_statusBar->setMessage(item->getStatusBarInfo(), DolphinStatusBar::Default);
1210         emit requestItemInfo(item->url());
1211     }
1212 }
1213
1214 void DolphinView::clearHoverInformation()
1215 {
1216     m_statusBar->clear();
1217 }
1218
1219
1220 void DolphinView::createView()
1221 {
1222     // delete current view
1223     QAbstractItemView* view = itemView();
1224     if (view != 0) {
1225         m_topLayout->removeWidget(view);
1226         view->close();
1227         if (view == m_iconsView) {
1228             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
1229             m_iconsView->setItemCategorizer(0);
1230             delete categorizer;
1231         }
1232         view->deleteLater();
1233         view = 0;
1234         m_iconsView = 0;
1235         m_detailsView = 0;
1236         m_columnView = 0;
1237         m_fileItemDelegate = 0;
1238     }
1239
1240     Q_ASSERT(m_iconsView == 0);
1241     Q_ASSERT(m_detailsView == 0);
1242     Q_ASSERT(m_columnView == 0);
1243
1244     // ... and recreate it representing the current mode
1245     switch (m_mode) {
1246     case IconsView:
1247         m_iconsView = new DolphinIconsView(this, m_controller);
1248         view = m_iconsView;
1249         break;
1250
1251     case DetailsView:
1252         m_detailsView = new DolphinDetailsView(this, m_controller);
1253         view = m_detailsView;
1254         break;
1255
1256     case ColumnView:
1257         m_columnView = new DolphinColumnView(this, m_controller);
1258         view = m_columnView;
1259         break;
1260     }
1261
1262     Q_ASSERT(view != 0);
1263
1264     m_fileItemDelegate = new KFileItemDelegate(view);
1265     view->setItemDelegate(m_fileItemDelegate);
1266
1267     view->setModel(m_proxyModel);
1268     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
1269
1270     new KMimeTypeResolver(view, m_dirModel);
1271     m_topLayout->insertWidget(1, view);
1272
1273     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
1274             m_controller, SLOT(indicateSelectionChange()));
1275     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
1276             this, SLOT(emitContentsMoved()));
1277     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
1278             this, SLOT(emitContentsMoved()));
1279 }
1280
1281 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
1282 {
1283     QItemSelectionModel* selectionModel = itemView()->selectionModel();
1284     const QAbstractItemModel* itemModel = selectionModel->model();
1285
1286     const QModelIndex topLeft = itemModel->index(0, 0);
1287     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
1288                                     itemModel->columnCount() - 1);
1289
1290     QItemSelection selection(topLeft, bottomRight);
1291     selectionModel->select(selection, flags);
1292 }
1293
1294 QAbstractItemView* DolphinView::itemView() const
1295 {
1296     if (m_detailsView != 0) {
1297         return m_detailsView;
1298     } else if (m_columnView != 0) {
1299         return m_columnView;
1300     }
1301
1302     return m_iconsView;
1303 }
1304
1305 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
1306 {
1307     return index.isValid() && (index.column() == KDirModel::Name);
1308 }
1309
1310 bool DolphinView::isCutItem(const KFileItem& item) const
1311 {
1312     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1313     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
1314
1315     const KUrl& itemUrl = item.url();
1316     KUrl::List::const_iterator it = cutUrls.begin();
1317     const KUrl::List::const_iterator end = cutUrls.end();
1318     while (it != end) {
1319         if (*it == itemUrl) {
1320             return true;
1321         }
1322         ++it;
1323     }
1324
1325     return false;
1326 }
1327
1328 void DolphinView::applyCutItemEffect()
1329 {
1330     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1331     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
1332         return;
1333     }
1334
1335     KFileItemList items(m_dirLister->items());
1336     KFileItemList::const_iterator it = items.begin();
1337     const KFileItemList::const_iterator end = items.end();
1338     while (it != end) {
1339         KFileItem* item = *it;
1340         if (isCutItem(*item)) {
1341             const QModelIndex index = m_dirModel->indexForItem(*item);
1342             const KFileItem* item = m_dirModel->itemForIndex(index);
1343             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
1344             if ((value.type() == QVariant::Icon) && (item != 0)) {
1345                 const QIcon icon(qvariant_cast<QIcon>(value));
1346                 QPixmap pixmap = icon.pixmap(128, 128);
1347
1348                 // remember current pixmap for the item to be able
1349                 // to restore it when other items get cut
1350                 CutItem cutItem;
1351                 cutItem.url = item->url();
1352                 cutItem.pixmap = pixmap;
1353                 m_cutItemsCache.append(cutItem);
1354
1355                 // apply icon effect to the cut item
1356                 KIconEffect iconEffect;
1357                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
1358                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
1359             }
1360         }
1361         ++it;
1362     }
1363 }
1364
1365 #include "dolphinview.moc"