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 KUrl DolphinView::rootUrl() const
 201 {
 202     return isColumnViewActive() ? m_dirLister->url() : url();
 203 }
 204
 205 bool DolphinView::isActive() const
 206 {
 207     return m_mainWindow->activeView() == this;
 208 }
 209
 210 void DolphinView::setMode(Mode mode)
 211 {
 212     if (mode == m_mode) {
 213         return; // the wished mode is already set
 214     }
 215
 216     m_mode = mode;
 217
 218     if (isColumnViewActive()) {
 219         // When changing the mode in the column view, it makes sense
 220         // to go back to the root URL of the column view automatically.
 221         // Otherwise there it would not be possible to turn off the column view
 222         // without focusing the first column.
 223         setUrl(m_dirLister->url());
 224     }
 225
 226     ViewProperties props(m_urlNavigator->url());
 227     props.setViewMode(m_mode);
 228
 229     createView();
 230     startDirLister(m_urlNavigator->url());
 231
 232     emit modeChanged();
 233 }
 234
 235 DolphinView::Mode DolphinView::mode() const
 236 {
 237     return m_mode;
 238 }
 239
 240 void DolphinView::setShowPreview(bool show)
 241 {
 242     ViewProperties props(m_urlNavigator->url());
 243     props.setShowPreview(show);
 244
 245     m_controller->setShowPreview(show);
 246     emit showPreviewChanged();
 247
 248     startDirLister(m_urlNavigator->url(), true);
 249 }
 250
 251 bool DolphinView::showPreview() const
 252 {
 253     return m_controller->showPreview();
 254 }
 255
 256 void DolphinView::setShowHiddenFiles(bool show)
 257 {
 258     if (m_dirLister->showingDotFiles() == show) {
 259         return;
 260     }
 261
 262     ViewProperties props(m_urlNavigator->url());
 263     props.setShowHiddenFiles(show);
 264
 265     m_dirLister->setShowingDotFiles(show);
 266     emit showHiddenFilesChanged();
 267
 268     startDirLister(m_urlNavigator->url(), true);
 269 }
 270
 271 bool DolphinView::showHiddenFiles() const
 272 {
 273     return m_dirLister->showingDotFiles();
 274 }
 275
 276 void DolphinView::setCategorizedSorting(bool categorized)
 277 {
 278     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 279         return;
 280     }
 281
 282     Q_ASSERT(m_iconsView != 0);
 283     if (categorized) {
 284         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 285         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 286     } else {
 287         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 288         m_iconsView->setItemCategorizer(0);
 289         delete categorizer;
 290     }
 291
 292     ViewProperties props(m_urlNavigator->url());
 293     props.setCategorizedSorting(categorized);
 294     props.save();
 295
 296     emit categorizedSortingChanged();
 297 }
 298
 299 bool DolphinView::categorizedSorting() const
 300 {
 301     if (!supportsCategorizedSorting()) {
 302         return false;
 303     }
 304
 305     Q_ASSERT(m_iconsView != 0);
 306     return m_iconsView->itemCategorizer() != 0;
 307 }
 308
 309 bool DolphinView::supportsCategorizedSorting() const
 310 {
 311     return m_iconsView != 0;
 312 }
 313
 314 void DolphinView::renameSelectedItems()
 315 {
 316     DolphinView* view = mainWindow()->activeView();
 317     const KUrl::List urls = selectedUrls();
 318     if (urls.count() > 1) {
 319         // More than one item has been selected for renaming. Open
 320         // a rename dialog and rename all items afterwards.
 321         RenameDialog dialog(urls);
 322         if (dialog.exec() == QDialog::Rejected) {
 323             return;
 324         }
 325
 326         const QString& newName = dialog.newName();
 327         if (newName.isEmpty()) {
 328             view->statusBar()->setMessage(dialog.errorString(),
 329                                           DolphinStatusBar::Error);
 330         } else {
 331             // TODO: check how this can be integrated into KonqUndoManager/KonqOperations
 332             // as one operation instead of n rename operations like it is done now...
 333             Q_ASSERT(newName.contains('#'));
 334
 335             // iterate through all selected items and rename them...
 336             const int replaceIndex = newName.indexOf('#');
 337             Q_ASSERT(replaceIndex >= 0);
 338             int index = 1;
 339
 340             KUrl::List::const_iterator it = urls.begin();
 341             KUrl::List::const_iterator end = urls.end();
 342             while (it != end) {
 343                 const KUrl& oldUrl = *it;
 344                 QString number;
 345                 number.setNum(index++);
 346
 347                 QString name(newName);
 348                 name.replace(replaceIndex, 1, number);
 349
 350                 if (oldUrl.fileName() != name) {
 351                     KUrl newUrl = oldUrl;
 352                     newUrl.setFileName(name);
 353                     m_mainWindow->rename(oldUrl, newUrl);
 354                 }
 355                 ++it;
 356             }
 357         }
 358     } else {
 359         // Only one item has been selected for renaming. Use the custom
 360         // renaming mechanism from the views.
 361         Q_ASSERT(urls.count() == 1);
 362
 363         // TODO: Think about using KFileItemDelegate as soon as it supports editing.
 364         // Currently the RenameDialog is used, but I'm not sure whether inline renaming
 365         // is a benefit for the user at all -> let's wait for some input first...
 366         RenameDialog dialog(urls);
 367         if (dialog.exec() == QDialog::Rejected) {
 368             return;
 369         }
 370
 371         const QString& newName = dialog.newName();
 372         if (newName.isEmpty()) {
 373             view->statusBar()->setMessage(dialog.errorString(),
 374                                           DolphinStatusBar::Error);
 375         } else {
 376             const KUrl& oldUrl = urls.first();
 377             KUrl newUrl = oldUrl;
 378             newUrl.setFileName(newName);
 379             m_mainWindow->rename(oldUrl, newUrl);
 380         }
 381     }
 382 }
 383
 384 void DolphinView::selectAll()
 385 {
 386     selectAll(QItemSelectionModel::Select);
 387 }
 388
 389 void DolphinView::invertSelection()
 390 {
 391     selectAll(QItemSelectionModel::Toggle);
 392 }
 393
 394 DolphinStatusBar* DolphinView::statusBar() const
 395 {
 396     return m_statusBar;
 397 }
 398
 399 int DolphinView::contentsX() const
 400 {
 401     return itemView()->horizontalScrollBar()->value();
 402 }
 403
 404 int DolphinView::contentsY() const
 405 {
 406     return itemView()->verticalScrollBar()->value();
 407 }
 408
 409 void DolphinView::emitRequestItemInfo(const KUrl& url)
 410 {
 411     emit requestItemInfo(url);
 412 }
 413
 414 bool DolphinView::isFilterBarVisible() const
 415 {
 416     return m_filterBar->isVisible();
 417 }
 418
 419 bool DolphinView::isUrlEditable() const
 420 {
 421     return m_urlNavigator->isUrlEditable();
 422 }
 423
 424 void DolphinView::zoomIn()
 425 {
 426     m_controller->triggerZoomIn();
 427 }
 428
 429 void DolphinView::zoomOut()
 430 {
 431     m_controller->triggerZoomOut();
 432 }
 433
 434 bool DolphinView::isZoomInPossible() const
 435 {
 436     return m_controller->isZoomInPossible();
 437 }
 438
 439 bool DolphinView::isZoomOutPossible() const
 440 {
 441     return m_controller->isZoomOutPossible();
 442 }
 443
 444 void DolphinView::setSorting(Sorting sorting)
 445 {
 446     if (sorting != this->sorting()) {
 447         updateSorting(sorting);
 448     }
 449 }
 450
 451 DolphinView::Sorting DolphinView::sorting() const
 452 {
 453     return m_proxyModel->sorting();
 454 }
 455
 456 void DolphinView::setSortOrder(Qt::SortOrder order)
 457 {
 458     if (sortOrder() != order) {
 459         updateSortOrder(order);
 460     }
 461 }
 462
 463 Qt::SortOrder DolphinView::sortOrder() const
 464 {
 465     return m_proxyModel->sortOrder();
 466 }
 467
 468 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 469 {
 470     ViewProperties props(m_urlNavigator->url());
 471     props.setAdditionalInfo(info);
 472
 473     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 474     m_fileItemDelegate->setAdditionalInformation(info);
 475
 476     emit additionalInfoChanged(info);
 477     startDirLister(m_urlNavigator->url(), true);
 478 }
 479
 480 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 481 {
 482     return m_fileItemDelegate->additionalInformation();
 483 }
 484
 485 void DolphinView::goBack()
 486 {
 487     m_urlNavigator->goBack();
 488 }
 489
 490 void DolphinView::goForward()
 491 {
 492     m_urlNavigator->goForward();
 493 }
 494
 495 void DolphinView::goUp()
 496 {
 497     m_urlNavigator->goUp();
 498 }
 499
 500 void DolphinView::goHome()
 501 {
 502     m_urlNavigator->goHome();
 503 }
 504
 505 void DolphinView::setUrlEditable(bool editable)
 506 {
 507     m_urlNavigator->setUrlEditable(editable);
 508 }
 509
 510 bool DolphinView::hasSelection() const
 511 {
 512     return itemView()->selectionModel()->hasSelection();
 513 }
 514
 515 void DolphinView::clearSelection()
 516 {
 517     itemView()->selectionModel()->clear();
 518 }
 519
 520 KFileItemList DolphinView::selectedItems() const
 521 {
 522     const QAbstractItemView* view = itemView();
 523
 524     // Our view has a selection, we will map them back to the DirModel
 525     // and then fill the KFileItemList.
 526     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 527
 528     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 529     KFileItemList itemList;
 530
 531     const QModelIndexList indexList = selection.indexes();
 532     QModelIndexList::const_iterator end = indexList.end();
 533     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 534         Q_ASSERT((*it).isValid());
 535
 536         KFileItem* item = m_dirModel->itemForIndex(*it);
 537         if (item != 0) {
 538             itemList.append(item);
 539         }
 540     }
 541
 542     return itemList;
 543 }
 544
 545 KUrl::List DolphinView::selectedUrls() const
 546 {
 547     KUrl::List urls;
 548
 549     const KFileItemList list = selectedItems();
 550     KFileItemList::const_iterator it = list.begin();
 551     const KFileItemList::const_iterator end = list.end();
 552     while (it != end) {
 553         KFileItem* item = *it;
 554         urls.append(item->url());
 555         ++it;
 556     }
 557
 558     return urls;
 559 }
 560
 561 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 562 {
 563     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 564     return m_dirModel->itemForIndex(dirModelIndex);
 565 }
 566
 567 void DolphinView::rename(const KUrl& source, const QString& newName)
 568 {
 569     bool ok = false;
 570
 571     if (newName.isEmpty() || (source.fileName() == newName)) {
 572         return;
 573     }
 574
 575     KUrl dest(source.upUrl());
 576     dest.addPath(newName);
 577
 578     const bool destExists = KIO::NetAccess::exists(dest,
 579                             false,
 580                             mainWindow()->activeView());
 581     if (destExists) {
 582         // the destination already exists, hence ask the user
 583         // how to proceed...
 584         KIO::RenameDialog renameDialog(this,
 585                                        i18n("File Already Exists"),
 586                                        source.path(),
 587                                        dest.path(),
 588                                        KIO::M_OVERWRITE);
 589         switch (renameDialog.exec()) {
 590         case KIO::R_OVERWRITE:
 591             // the destination should be overwritten
 592             ok = KIO::NetAccess::file_move(source, dest, -1, true);
 593             break;
 594
 595         case KIO::R_RENAME: {
 596             // a new name for the destination has been used
 597             KUrl newDest(renameDialog.newDestUrl());
 598             ok = KIO::NetAccess::file_move(source, newDest);
 599             break;
 600         }
 601
 602         default:
 603             // the renaming operation has been canceled
 604             return;
 605         }
 606     } else {
 607         // no destination exists, hence just move the file to
 608         // do the renaming
 609         ok = KIO::NetAccess::file_move(source, dest);
 610     }
 611
 612     const QString destFileName = dest.fileName();
 613     if (ok) {
 614         m_statusBar->setMessage(i18n("Renamed file '%1' to '%2'.", source.fileName(), destFileName),
 615                                 DolphinStatusBar::OperationCompleted);
 616
 617         KonqOperations::rename(this, source, destFileName);
 618     } else {
 619         m_statusBar->setMessage(i18n("Renaming of file '%1' to '%2' failed.", source.fileName(), destFileName),
 620                                 DolphinStatusBar::Error);
 621     }
 622 }
 623
 624 void DolphinView::reload()
 625 {
 626     const KUrl& url = m_urlNavigator->url();
 627     changeDirectory(url);
 628     startDirLister(url, true);
 629 }
 630
 631 void DolphinView::refresh()
 632 {
 633     createView();
 634     reload();
 635 }
 636
 637 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 638 {
 639     QWidget::mouseReleaseEvent(event);
 640     mainWindow()->setActiveView(this);
 641 }
 642
 643 DolphinMainWindow* DolphinView::mainWindow() const
 644 {
 645     return m_mainWindow;
 646 }
 647
 648 void DolphinView::changeDirectory(const KUrl& url)
 649 {
 650     if (!isActive()) {
 651         requestActivation();
 652     }
 653
 654     const ViewProperties props(url);
 655
 656     const Mode mode = props.viewMode();
 657     bool changeMode = (m_mode != mode);
 658     if (changeMode && isColumnViewActive()) {
 659         // The column view is active. Only change the
 660         // mode if the current URL is no child of the column view.
 661         if (m_dirLister->url().isParentOf(url)) {
 662             changeMode = false;
 663         }
 664     }
 665
 666     if (changeMode) {
 667         m_mode = mode;
 668         createView();
 669         emit modeChanged();
 670
 671         if (m_mode == ColumnView) {
 672             // The mode has been changed to the Column View. When starting the dir
 673             // lister with DolphinView::startDirLister() it is important to give a
 674             // hint that the dir lister may not keep the current directory
 675             // although this is the default for showing a hierarchy.
 676             m_initializeColumnView = true;
 677         }
 678     }
 679
 680     const bool showHiddenFiles = props.showHiddenFiles();
 681     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 682         m_dirLister->setShowingDotFiles(showHiddenFiles);
 683         emit showHiddenFilesChanged();
 684     }
 685
 686     const bool categorized = props.categorizedSorting();
 687     if (categorized != categorizedSorting()) {
 688         if (supportsCategorizedSorting()) {
 689             Q_ASSERT(m_iconsView != 0);
 690             if (categorized) {
 691                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 692                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 693             } else {
 694                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 695                 m_iconsView->setItemCategorizer(0);
 696                 delete categorizer;
 697             }
 698         }
 699         emit categorizedSortingChanged();
 700     }
 701
 702     const DolphinView::Sorting sorting = props.sorting();
 703     if (sorting != m_proxyModel->sorting()) {
 704         m_proxyModel->setSorting(sorting);
 705         emit sortingChanged(sorting);
 706     }
 707
 708     const Qt::SortOrder sortOrder = props.sortOrder();
 709     if (sortOrder != m_proxyModel->sortOrder()) {
 710         m_proxyModel->setSortOrder(sortOrder);
 711         emit sortOrderChanged(sortOrder);
 712     }
 713
 714     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 715     if (info != m_fileItemDelegate->additionalInformation()) {
 716         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 717         m_fileItemDelegate->setAdditionalInformation(info);
 718         emit additionalInfoChanged(info);
 719     }
 720
 721     const bool showPreview = props.showPreview();
 722     if (showPreview != m_controller->showPreview()) {
 723         m_controller->setShowPreview(showPreview);
 724         emit showPreviewChanged();
 725     }
 726
 727     startDirLister(url);
 728     emit urlChanged(url);
 729
 730     m_statusBar->clear();
 731 }
 732
 733 void DolphinView::triggerItem(const QModelIndex& index)
 734 {
 735     if (!isValidNameIndex(index)) {
 736         return;
 737     }
 738
 739     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 740     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 741         // items are selected by the user, hence don't trigger the
 742         // item specified by 'index'
 743         return;
 744     }
 745
 746     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 747     if (item == 0) {
 748         return;
 749     }
 750
 751     // Prefer the local path over the URL. This assures that the
 752     // volume space information is correct. Assuming that the URL is media:/sda1,
 753     // and the local path is /windows/C: For the URL the space info is related
 754     // to the root partition (and hence wrong) and for the local path the space
 755     // info is related to the windows partition (-> correct).
 756     const QString localPath(item->localPath());
 757     KUrl url;
 758     if (localPath.isEmpty()) {
 759         url = item->url();
 760     } else {
 761         url = localPath;
 762     }
 763
 764     if (item->isDir()) {
 765         setUrl(url);
 766     } else if (item->isFile()) {
 767         // allow to browse through ZIP and tar files
 768         KMimeType::Ptr mime = item->mimeTypePtr();
 769         if (mime->is("application/zip")) {
 770             url.setProtocol("zip");
 771             setUrl(url);
 772         } else if (mime->is("application/x-tar") ||
 773                    mime->is("application/x-tarz") ||
 774                    mime->is("application/x-bzip-compressed-tar") ||
 775                    mime->is("application/x-compressed-tar") ||
 776                    mime->is("application/x-tzo")) {
 777             url.setProtocol("tar");
 778             setUrl(url);
 779         } else {
 780             item->run();
 781         }
 782     } else {
 783         item->run();
 784     }
 785 }
 786
 787 void DolphinView::updateProgress(int percent)
 788 {
 789     if (m_showProgress) {
 790         m_statusBar->setProgress(percent);
 791     }
 792 }
 793
 794 void DolphinView::updateItemCount()
 795 {
 796     if (m_showProgress) {
 797         m_statusBar->setProgressText(QString());
 798         m_statusBar->setProgress(100);
 799         m_showProgress = false;
 800     }
 801
 802     KFileItemList items(m_dirLister->items());
 803     KFileItemList::const_iterator it = items.begin();
 804     const KFileItemList::const_iterator end = items.end();
 805
 806     m_fileCount = 0;
 807     m_folderCount = 0;
 808
 809     while (it != end) {
 810         KFileItem* item = *it;
 811         if (item->isDir()) {
 812             ++m_folderCount;
 813         } else {
 814             ++m_fileCount;
 815         }
 816         ++it;
 817     }
 818
 819     updateStatusBar();
 820
 821     m_blockContentsMovedSignal = false;
 822     QTimer::singleShot(0, this, SLOT(restoreContentsPos()));
 823 }
 824
 825 void DolphinView::generatePreviews(const KFileItemList& items)
 826 {
 827     if (m_controller->showPreview()) {
 828
 829         // Must turn QList<KFileItem *> to QList<KFileItem>...
 830         QList<KFileItem> itemsToPreview;
 831         foreach( KFileItem* it, items )
 832             itemsToPreview.append( *it );
 833
 834         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 835         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 836                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 837     }
 838 }
 839
 840 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 841 {
 842     Q_ASSERT(!item.isNull());
 843     if (item.url().directory() != m_dirLister->url().path()) {
 844         // the preview job is still working on items of an older URL, hence
 845         // the item is not part of the directory model anymore
 846         return;
 847     }
 848
 849     const QModelIndex idx = m_dirModel->indexForItem(item);
 850     if (idx.isValid() && (idx.column() == 0)) {
 851         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 852         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 853             KIconEffect iconEffect;
 854             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 855             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 856         } else {
 857             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 858         }
 859     }
 860 }
 861
 862 void DolphinView::restoreContentsPos()
 863 {
 864     KUrl currentUrl = m_urlNavigator->url();
 865     if (!currentUrl.isEmpty()) {
 866         QAbstractItemView* view = itemView();
 867         // TODO: view->setCurrentItem(m_urlNavigator->currentFileName());
 868         QPoint pos = m_urlNavigator->savedPosition();
 869         view->horizontalScrollBar()->setValue(pos.x());
 870         view->verticalScrollBar()->setValue(pos.y());
 871     }
 872 }
 873
 874 void DolphinView::showInfoMessage(const QString& msg)
 875 {
 876     m_statusBar->setMessage(msg, DolphinStatusBar::Information);
 877 }
 878
 879 void DolphinView::showErrorMessage(const QString& msg)
 880 {
 881     m_statusBar->setMessage(msg, DolphinStatusBar::Error);
 882 }
 883
 884 void DolphinView::emitSelectionChangedSignal()
 885 {
 886     emit selectionChanged(DolphinView::selectedItems());
 887 }
 888
 889 void DolphinView::closeFilterBar()
 890 {
 891     m_filterBar->hide();
 892     emit showFilterBarChanged(false);
 893 }
 894
 895 void DolphinView::startDirLister(const KUrl& url, bool reload)
 896 {
 897     if (!url.isValid()) {
 898         const QString location(url.pathOrUrl());
 899         if (location.isEmpty()) {
 900             m_statusBar->setMessage(i18n("The location is empty."), DolphinStatusBar::Error);
 901         } else {
 902             m_statusBar->setMessage(i18n("The location '%1' is invalid.", location),
 903                                     DolphinStatusBar::Error);
 904         }
 905         return;
 906     }
 907
 908     // Only show the directory loading progress if the status bar does
 909     // not contain another progress information. This means that
 910     // the directory loading progress information has the lowest priority.
 911     const QString progressText(m_statusBar->progressText());
 912     m_showProgress = progressText.isEmpty() ||
 913                      (progressText == i18n("Loading folder..."));
 914     if (m_showProgress) {
 915         m_statusBar->setProgressText(i18n("Loading folder..."));
 916         m_statusBar->setProgress(0);
 917     }
 918
 919     m_cutItemsCache.clear();
 920     m_blockContentsMovedSignal = true;
 921     m_dirLister->stop();
 922
 923     bool openDir = true;
 924     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 925     m_initializeColumnView = false;
 926
 927     if (keepOldDirs) {
 928         if (reload) {
 929             keepOldDirs = false;
 930
 931             const KUrl& dirListerUrl = m_dirLister->url();
 932             if (dirListerUrl.isValid()) {
 933                 const KUrl::List dirs = m_dirLister->directories();
 934                 KUrl url;
 935                 foreach(url, dirs) {
 936                     m_dirLister->updateDirectory(url);
 937                 }
 938                 openDir = false;
 939             }
 940         } else if (m_dirLister->directories().contains(url)) {
 941             // The dir lister contains the directory already, so
 942             // KDirLister::openUrl() may not been invoked twice.
 943             m_dirLister->updateDirectory(url);
 944             openDir = false;
 945         } else {
 946             const KUrl& dirListerUrl = m_dirLister->url();
 947             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 948                 // The current URL is not a child of the dir lister
 949                 // URL. This may happen when e. g. a bookmark has been selected
 950                 // and hence the view must be reset.
 951                 keepOldDirs = false;
 952             }
 953         }
 954     }
 955
 956     if (openDir) {
 957         m_dirLister->openUrl(url, keepOldDirs, reload);
 958     }
 959 }
 960
 961 QString DolphinView::defaultStatusBarText() const
 962 {
 963     return KIO::itemsSummaryString(m_fileCount + m_folderCount,
 964                                    m_fileCount,
 965                                    m_folderCount,
 966                                    0, false);
 967 }
 968
 969 QString DolphinView::selectionStatusBarText() const
 970 {
 971     QString text;
 972     const KFileItemList list = selectedItems();
 973     if (list.isEmpty()) {
 974         // when an item is triggered, it is temporary selected but selectedItems()
 975         // will return an empty list
 976         return QString();
 977     }
 978
 979     int fileCount = 0;
 980     int folderCount = 0;
 981     KIO::filesize_t byteSize = 0;
 982     KFileItemList::const_iterator it = list.begin();
 983     const KFileItemList::const_iterator end = list.end();
 984     while (it != end) {
 985         KFileItem* item = *it;
 986         if (item->isDir()) {
 987             ++folderCount;
 988         } else {
 989             ++fileCount;
 990             byteSize += item->size();
 991         }
 992         ++it;
 993     }
 994
 995     if (folderCount > 0) {
 996         text = i18np("1 Folder selected", "%1 Folders selected", folderCount);
 997         if (fileCount > 0) {
 998             text += ", ";
 999         }
1000     }
1001
1002     if (fileCount > 0) {
1003         const QString sizeText(KIO::convertSize(byteSize));
1004         text += i18np("1 File selected (%2)", "%1 Files selected (%2)", fileCount, sizeText);
1005     }
1006
1007     return text;
1008 }
1009
1010 void DolphinView::showFilterBar(bool show)
1011 {
1012     Q_ASSERT(m_filterBar != 0);
1013     if (show) {
1014         m_filterBar->show();
1015     } else {
1016         m_filterBar->hide();
1017     }
1018 }
1019
1020 void DolphinView::updateStatusBar()
1021 {
1022     // As the item count information is less important
1023     // in comparison with other messages, it should only
1024     // be shown if:
1025     // - the status bar is empty or
1026     // - shows already the item count information or
1027     // - shows only a not very important information
1028     // - if any progress is given don't show the item count info at all
1029     const QString msg(m_statusBar->message());
1030     const bool updateStatusBarMsg = (msg.isEmpty() ||
1031                                      (msg == m_statusBar->defaultText()) ||
1032                                      (m_statusBar->type() == DolphinStatusBar::Information)) &&
1033                                     (m_statusBar->progress() == 100);
1034
1035     const QString text(hasSelection() ? selectionStatusBarText() : defaultStatusBarText());
1036     m_statusBar->setDefaultText(text);
1037
1038     if (updateStatusBarMsg) {
1039         m_statusBar->setMessage(text, DolphinStatusBar::Default);
1040     }
1041 }
1042
1043 void DolphinView::requestActivation()
1044 {
1045     m_mainWindow->setActiveView(this);
1046 }
1047
1048 void DolphinView::changeSelection(const KFileItemList& selection)
1049 {
1050     clearSelection();
1051     if (selection.isEmpty()) {
1052         return;
1053     }
1054     KUrl baseUrl = url();
1055     KUrl url;
1056     QItemSelection new_selection;
1057     foreach(KFileItem* item, selection) {
1058         url = item->url().upUrl();
1059         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1060             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
1061             new_selection.select(index, index);
1062         }
1063     }
1064     itemView()->selectionModel()->select(new_selection,
1065                                          QItemSelectionModel::ClearAndSelect
1066                                          | QItemSelectionModel::Current);
1067 }
1068
1069 void DolphinView::changeNameFilter(const QString& nameFilter)
1070 {
1071     // The name filter of KDirLister does a 'hard' filtering, which
1072     // means that only the items are shown where the names match
1073     // exactly the filter. This is non-transparent for the user, which
1074     // just wants to have a 'soft' filtering: does the name contain
1075     // the filter string?
1076     QString adjustedFilter(nameFilter);
1077     adjustedFilter.insert(0, '*');
1078     adjustedFilter.append('*');
1079
1080     // Use the ProxyModel to filter:
1081     // This code is #ifdefed as setNameFilter behaves
1082     // slightly different than the QSortFilterProxyModel
1083     // as it will not remove directories. I will ask
1084     // our beloved usability experts for input
1085     // -- z.
1086 #if 0
1087     m_dirLister->setNameFilter(adjustedFilter);
1088     m_dirLister->emitChanges();
1089 #else
1090     m_proxyModel->setFilterRegExp(nameFilter);
1091 #endif
1092 }
1093
1094 void DolphinView::openContextMenu(const QPoint& pos)
1095 {
1096     KFileItem* item = 0;
1097
1098     const QModelIndex index = itemView()->indexAt(pos);
1099     if (isValidNameIndex(index)) {
1100         item = fileItem(index);
1101     }
1102
1103     DolphinContextMenu contextMenu(m_mainWindow, item, url());
1104     contextMenu.open();
1105 }
1106
1107 void DolphinView::dropUrls(const KUrl::List& urls,
1108                            const QModelIndex& index,
1109                            QWidget* source)
1110 {
1111     KFileItem* directory = 0;
1112     if (isValidNameIndex(index)) {
1113         KFileItem* item = fileItem(index);
1114         Q_ASSERT(item != 0);
1115         if (item->isDir()) {
1116             // the URLs are dropped above a directory
1117             directory = item;
1118         }
1119     }
1120
1121     if ((directory == 0) && (source == itemView())) {
1122         // The dropping is done into the same viewport where
1123         // the dragging has been started. Just ignore this...
1124         return;
1125     }
1126
1127     const KUrl& destination = (directory == 0) ? url() :
1128                               directory->url();
1129     dropUrls(urls, destination);
1130 }
1131
1132 void DolphinView::dropUrls(const KUrl::List& urls,
1133                            const KUrl& destination)
1134 {
1135     m_mainWindow->dropUrls(urls, destination);
1136 }
1137
1138 void DolphinView::updateSorting(DolphinView::Sorting sorting)
1139 {
1140     ViewProperties props(url());
1141     props.setSorting(sorting);
1142
1143     m_proxyModel->setSorting(sorting);
1144
1145     emit sortingChanged(sorting);
1146 }
1147
1148 void DolphinView::updateSortOrder(Qt::SortOrder order)
1149 {
1150     ViewProperties props(url());
1151     props.setSortOrder(order);
1152
1153     m_proxyModel->setSortOrder(order);
1154
1155     emit sortOrderChanged(order);
1156 }
1157
1158 void DolphinView::emitContentsMoved()
1159 {
1160     if (!m_blockContentsMovedSignal) {
1161         emit contentsMoved(contentsX(), contentsY());
1162     }
1163 }
1164
1165 void DolphinView::updateActivationState()
1166 {
1167     m_urlNavigator->setActive(isActive());
1168
1169     QColor color = KGlobalSettings::baseColor();
1170     if (isActive()) {
1171         emit urlChanged(url());
1172         emit selectionChanged(selectedItems());
1173     } else {
1174         // darken the background if the view is inactive
1175         // TODO: does not work for a black background
1176         color = color.darker(105);
1177     }
1178
1179     QWidget* viewport = itemView()->viewport();
1180     QPalette palette;
1181     palette.setColor(viewport->backgroundRole(), color);
1182     viewport->setPalette(palette);
1183
1184     update();
1185 }
1186
1187 void DolphinView::updateCutItems()
1188 {
1189     // restore the icons of all previously selected items to the
1190     // original state...
1191     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
1192     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
1193     while (it != end) {
1194         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
1195         if (index.isValid()) {
1196             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
1197         }
1198         ++it;
1199     }
1200     m_cutItemsCache.clear();
1201
1202     // ... and apply an item effect to all currently cut items
1203     applyCutItemEffect();
1204 }
1205
1206 void DolphinView::showHoverInformation(const QModelIndex& index)
1207 {
1208     if (hasSelection()) {
1209         return;
1210     }
1211
1212     const KFileItem* item = fileItem(index);
1213     if (item != 0) {
1214         m_statusBar->setMessage(item->getStatusBarInfo(), DolphinStatusBar::Default);
1215         emit requestItemInfo(item->url());
1216     }
1217 }
1218
1219 void DolphinView::clearHoverInformation()
1220 {
1221     m_statusBar->clear();
1222 }
1223
1224
1225 void DolphinView::createView()
1226 {
1227     // delete current view
1228     QAbstractItemView* view = itemView();
1229     if (view != 0) {
1230         m_topLayout->removeWidget(view);
1231         view->close();
1232         if (view == m_iconsView) {
1233             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
1234             m_iconsView->setItemCategorizer(0);
1235             delete categorizer;
1236         }
1237         view->deleteLater();
1238         view = 0;
1239         m_iconsView = 0;
1240         m_detailsView = 0;
1241         m_columnView = 0;
1242         m_fileItemDelegate = 0;
1243     }
1244
1245     Q_ASSERT(m_iconsView == 0);
1246     Q_ASSERT(m_detailsView == 0);
1247     Q_ASSERT(m_columnView == 0);
1248
1249     // ... and recreate it representing the current mode
1250     switch (m_mode) {
1251     case IconsView:
1252         m_iconsView = new DolphinIconsView(this, m_controller);
1253         view = m_iconsView;
1254         break;
1255
1256     case DetailsView:
1257         m_detailsView = new DolphinDetailsView(this, m_controller);
1258         view = m_detailsView;
1259         break;
1260
1261     case ColumnView:
1262         m_columnView = new DolphinColumnView(this, m_controller);
1263         view = m_columnView;
1264         break;
1265     }
1266
1267     Q_ASSERT(view != 0);
1268
1269     m_fileItemDelegate = new KFileItemDelegate(view);
1270     view->setItemDelegate(m_fileItemDelegate);
1271
1272     view->setModel(m_proxyModel);
1273     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
1274
1275     new KMimeTypeResolver(view, m_dirModel);
1276     m_topLayout->insertWidget(1, view);
1277
1278     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
1279             m_controller, SLOT(indicateSelectionChange()));
1280     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
1281             this, SLOT(emitContentsMoved()));
1282     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
1283             this, SLOT(emitContentsMoved()));
1284 }
1285
1286 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
1287 {
1288     QItemSelectionModel* selectionModel = itemView()->selectionModel();
1289     const QAbstractItemModel* itemModel = selectionModel->model();
1290
1291     const QModelIndex topLeft = itemModel->index(0, 0);
1292     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
1293                                     itemModel->columnCount() - 1);
1294
1295     QItemSelection selection(topLeft, bottomRight);
1296     selectionModel->select(selection, flags);
1297 }
1298
1299 QAbstractItemView* DolphinView::itemView() const
1300 {
1301     if (m_detailsView != 0) {
1302         return m_detailsView;
1303     } else if (m_columnView != 0) {
1304         return m_columnView;
1305     }
1306
1307     return m_iconsView;
1308 }
1309
1310 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
1311 {
1312     return index.isValid() && (index.column() == KDirModel::Name);
1313 }
1314
1315 bool DolphinView::isCutItem(const KFileItem& item) const
1316 {
1317     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1318     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
1319
1320     const KUrl& itemUrl = item.url();
1321     KUrl::List::const_iterator it = cutUrls.begin();
1322     const KUrl::List::const_iterator end = cutUrls.end();
1323     while (it != end) {
1324         if (*it == itemUrl) {
1325             return true;
1326         }
1327         ++it;
1328     }
1329
1330     return false;
1331 }
1332
1333 void DolphinView::applyCutItemEffect()
1334 {
1335     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1336     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
1337         return;
1338     }
1339
1340     KFileItemList items(m_dirLister->items());
1341     KFileItemList::const_iterator it = items.begin();
1342     const KFileItemList::const_iterator end = items.end();
1343     while (it != end) {
1344         KFileItem* item = *it;
1345         if (isCutItem(*item)) {
1346             const QModelIndex index = m_dirModel->indexForItem(*item);
1347             const KFileItem* item = m_dirModel->itemForIndex(index);
1348             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
1349             if ((value.type() == QVariant::Icon) && (item != 0)) {
1350                 const QIcon icon(qvariant_cast<QIcon>(value));
1351                 QPixmap pixmap = icon.pixmap(128, 128);
1352
1353                 // remember current pixmap for the item to be able
1354                 // to restore it when other items get cut
1355                 CutItem cutItem;
1356                 cutItem.url = item->url();
1357                 cutItem.pixmap = pixmap;
1358                 m_cutItemsCache.append(cutItem);
1359
1360                 // apply icon effect to the cut item
1361                 KIconEffect iconEffect;
1362                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
1363                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
1364             }
1365         }
1366         ++it;
1367     }
1368 }
1369
1370 #include "dolphinview.moc"