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
 104     const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 105     m_urlNavigator->setUrlEditable(settings->editableUrl());
 106     m_urlNavigator->setHomeUrl(settings->homeUrl());
 107
 108     connect(m_urlNavigator, SIGNAL(urlChanged(const KUrl&)),
 109             this, SLOT(changeDirectory(const KUrl&)));
 110     connect(m_urlNavigator, SIGNAL(urlsDropped(const KUrl::List&, const KUrl&)),
 111             this, SLOT(dropUrls(const KUrl::List&, const KUrl&)));
 112     connect(m_urlNavigator, SIGNAL(activated()),
 113             this, SLOT(requestActivation()));
 114     connect(this, SIGNAL(contentsMoved(int, int)),
 115             m_urlNavigator, SLOT(savePosition(int, int)));
 116
 117     m_statusBar = new DolphinStatusBar(this);
 118
 119     m_dirLister = new DolphinDirLister();
 120     m_dirLister->setAutoUpdate(true);
 121     m_dirLister->setMainWindow(this);
 122     m_dirLister->setShowingDotFiles(showHiddenFiles);
 123     m_dirLister->setDelayedMimeTypes(true);
 124
 125     connect(m_dirLister, SIGNAL(clear()),
 126             this, SLOT(updateStatusBar()));
 127     connect(m_dirLister, SIGNAL(percent(int)),
 128             this, SLOT(updateProgress(int)));
 129     connect(m_dirLister, SIGNAL(deleteItem(KFileItem*)),
 130             this, SLOT(updateStatusBar()));
 131     connect(m_dirLister, SIGNAL(completed()),
 132             this, SLOT(updateItemCount()));
 133     connect(m_dirLister, SIGNAL(completed()),
 134             this, SLOT(updateCutItems()));
 135     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 136             this, SLOT(generatePreviews(const KFileItemList&)));
 137     connect(m_dirLister, SIGNAL(infoMessage(const QString&)),
 138             this, SLOT(showInfoMessage(const QString&)));
 139     connect(m_dirLister, SIGNAL(errorMessage(const QString&)),
 140             this, SLOT(showErrorMessage(const QString&)));
 141
 142     m_dirModel = new KDirModel();
 143     m_dirModel->setDirLister(m_dirLister);
 144     m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
 145
 146     m_proxyModel = new DolphinSortFilterProxyModel(this);
 147     m_proxyModel->setSourceModel(m_dirModel);
 148
 149     m_controller = new DolphinController(this);
 150     connect(m_controller, SIGNAL(requestContextMenu(const QPoint&)),
 151             this, SLOT(openContextMenu(const QPoint&)));
 152     connect(m_controller, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&, QWidget*)),
 153             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&, QWidget*)));
 154     connect(m_controller, SIGNAL(sortingChanged(DolphinView::Sorting)),
 155             this, SLOT(updateSorting(DolphinView::Sorting)));
 156     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 157             this, SLOT(updateSortOrder(Qt::SortOrder)));
 158     connect(m_controller, SIGNAL(itemTriggered(const QModelIndex&)),
 159             this, SLOT(triggerItem(const QModelIndex&)));
 160     connect(m_controller, SIGNAL(selectionChanged()),
 161             this, SLOT(emitSelectionChangedSignal()));
 162     connect(m_controller, SIGNAL(activated()),
 163             this, SLOT(requestActivation()));
 164     connect(m_controller, SIGNAL(itemEntered(const QModelIndex&)),
 165             this, SLOT(showHoverInformation(const QModelIndex&)));
 166     connect(m_controller, SIGNAL(viewportEntered()),
 167             this, SLOT(clearHoverInformation()));
 168
 169     createView();
 170
 171     m_iconSize = K3Icon::SizeMedium;
 172
 173     m_filterBar = new FilterBar(this);
 174     m_filterBar->setVisible(settings->filterBar());
 175     connect(m_filterBar, SIGNAL(filterChanged(const QString&)),
 176             this, SLOT(changeNameFilter(const QString&)));
 177     connect(m_filterBar, SIGNAL(closeRequest()),
 178             this, SLOT(closeFilterBar()));
 179
 180     m_topLayout->addWidget(m_urlNavigator);
 181     m_topLayout->addWidget(itemView());
 182     m_topLayout->addWidget(m_filterBar);
 183     m_topLayout->addWidget(m_statusBar);
 184 }
 185
 186 DolphinView::~DolphinView()
 187 {
 188     delete m_dirLister;
 189     m_dirLister = 0;
 190 }
 191
 192 void DolphinView::setUrl(const KUrl& url)
 193 {
 194     m_urlNavigator->setUrl(url);
 195     m_controller->setUrl(url);
 196 }
 197
 198 const KUrl& DolphinView::url() const
 199 {
 200     return m_urlNavigator->url();
 201 }
 202
 203 KUrl DolphinView::rootUrl() const
 204 {
 205     return isColumnViewActive() ? m_dirLister->url() : url();
 206 }
 207
 208 bool DolphinView::isActive() const
 209 {
 210     return m_mainWindow->activeView() == this;
 211 }
 212
 213 void DolphinView::setMode(Mode mode)
 214 {
 215     if (mode == m_mode) {
 216         return; // the wished mode is already set
 217     }
 218
 219     m_mode = mode;
 220
 221     if (isColumnViewActive()) {
 222         // When changing the mode in the column view, it makes sense
 223         // to go back to the root URL of the column view automatically.
 224         // Otherwise there it would not be possible to turn off the column view
 225         // without focusing the first column.
 226         setUrl(m_dirLister->url());
 227     }
 228
 229     ViewProperties props(m_urlNavigator->url());
 230     props.setViewMode(m_mode);
 231
 232     createView();
 233     startDirLister(m_urlNavigator->url());
 234
 235     emit modeChanged();
 236 }
 237
 238 DolphinView::Mode DolphinView::mode() const
 239 {
 240     return m_mode;
 241 }
 242
 243 void DolphinView::setShowPreview(bool show)
 244 {
 245     ViewProperties props(m_urlNavigator->url());
 246     props.setShowPreview(show);
 247
 248     m_controller->setShowPreview(show);
 249     emit showPreviewChanged();
 250
 251     startDirLister(m_urlNavigator->url(), true);
 252 }
 253
 254 bool DolphinView::showPreview() const
 255 {
 256     return m_controller->showPreview();
 257 }
 258
 259 void DolphinView::setShowHiddenFiles(bool show)
 260 {
 261     if (m_dirLister->showingDotFiles() == show) {
 262         return;
 263     }
 264
 265     ViewProperties props(m_urlNavigator->url());
 266     props.setShowHiddenFiles(show);
 267
 268     m_dirLister->setShowingDotFiles(show);
 269     emit showHiddenFilesChanged();
 270
 271     startDirLister(m_urlNavigator->url(), true);
 272 }
 273
 274 bool DolphinView::showHiddenFiles() const
 275 {
 276     return m_dirLister->showingDotFiles();
 277 }
 278
 279 void DolphinView::setCategorizedSorting(bool categorized)
 280 {
 281     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 282         return;
 283     }
 284
 285     Q_ASSERT(m_iconsView != 0);
 286     if (categorized) {
 287         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 288         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 289     } else {
 290         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 291         m_iconsView->setItemCategorizer(0);
 292         delete categorizer;
 293     }
 294
 295     ViewProperties props(m_urlNavigator->url());
 296     props.setCategorizedSorting(categorized);
 297     props.save();
 298
 299     emit categorizedSortingChanged();
 300 }
 301
 302 bool DolphinView::categorizedSorting() const
 303 {
 304     if (!supportsCategorizedSorting()) {
 305         return false;
 306     }
 307
 308     Q_ASSERT(m_iconsView != 0);
 309     return m_iconsView->itemCategorizer() != 0;
 310 }
 311
 312 bool DolphinView::supportsCategorizedSorting() const
 313 {
 314     return m_iconsView != 0;
 315 }
 316
 317 void DolphinView::renameSelectedItems()
 318 {
 319     DolphinView* view = mainWindow()->activeView();
 320     const KUrl::List urls = selectedUrls();
 321     if (urls.count() > 1) {
 322         // More than one item has been selected for renaming. Open
 323         // a rename dialog and rename all items afterwards.
 324         RenameDialog dialog(urls);
 325         if (dialog.exec() == QDialog::Rejected) {
 326             return;
 327         }
 328
 329         const QString& newName = dialog.newName();
 330         if (newName.isEmpty()) {
 331             view->statusBar()->setMessage(dialog.errorString(),
 332                                           DolphinStatusBar::Error);
 333         } else {
 334             // TODO: check how this can be integrated into KonqUndoManager/KonqOperations
 335             // as one operation instead of n rename operations like it is done now...
 336             Q_ASSERT(newName.contains('#'));
 337
 338             // iterate through all selected items and rename them...
 339             const int replaceIndex = newName.indexOf('#');
 340             Q_ASSERT(replaceIndex >= 0);
 341             int index = 1;
 342
 343             KUrl::List::const_iterator it = urls.begin();
 344             KUrl::List::const_iterator end = urls.end();
 345             while (it != end) {
 346                 const KUrl& oldUrl = *it;
 347                 QString number;
 348                 number.setNum(index++);
 349
 350                 QString name(newName);
 351                 name.replace(replaceIndex, 1, number);
 352
 353                 if (oldUrl.fileName() != name) {
 354                     KUrl newUrl = oldUrl;
 355                     newUrl.setFileName(name);
 356                     m_mainWindow->rename(oldUrl, newUrl);
 357                 }
 358                 ++it;
 359             }
 360         }
 361     } else {
 362         // Only one item has been selected for renaming. Use the custom
 363         // renaming mechanism from the views.
 364         Q_ASSERT(urls.count() == 1);
 365
 366         // TODO: Think about using KFileItemDelegate as soon as it supports editing.
 367         // Currently the RenameDialog is used, but I'm not sure whether inline renaming
 368         // is a benefit for the user at all -> let's wait for some input first...
 369         RenameDialog dialog(urls);
 370         if (dialog.exec() == QDialog::Rejected) {
 371             return;
 372         }
 373
 374         const QString& newName = dialog.newName();
 375         if (newName.isEmpty()) {
 376             view->statusBar()->setMessage(dialog.errorString(),
 377                                           DolphinStatusBar::Error);
 378         } else {
 379             const KUrl& oldUrl = urls.first();
 380             KUrl newUrl = oldUrl;
 381             newUrl.setFileName(newName);
 382             m_mainWindow->rename(oldUrl, newUrl);
 383         }
 384     }
 385 }
 386
 387 void DolphinView::selectAll()
 388 {
 389     selectAll(QItemSelectionModel::Select);
 390 }
 391
 392 void DolphinView::invertSelection()
 393 {
 394     selectAll(QItemSelectionModel::Toggle);
 395 }
 396
 397 DolphinStatusBar* DolphinView::statusBar() const
 398 {
 399     return m_statusBar;
 400 }
 401
 402 int DolphinView::contentsX() const
 403 {
 404     return itemView()->horizontalScrollBar()->value();
 405 }
 406
 407 int DolphinView::contentsY() const
 408 {
 409     return itemView()->verticalScrollBar()->value();
 410 }
 411
 412 void DolphinView::emitRequestItemInfo(const KUrl& url)
 413 {
 414     emit requestItemInfo(url);
 415 }
 416
 417 bool DolphinView::isFilterBarVisible() const
 418 {
 419     return m_filterBar->isVisible();
 420 }
 421
 422 bool DolphinView::isUrlEditable() const
 423 {
 424     return m_urlNavigator->isUrlEditable();
 425 }
 426
 427 void DolphinView::zoomIn()
 428 {
 429     m_controller->triggerZoomIn();
 430 }
 431
 432 void DolphinView::zoomOut()
 433 {
 434     m_controller->triggerZoomOut();
 435 }
 436
 437 bool DolphinView::isZoomInPossible() const
 438 {
 439     return m_controller->isZoomInPossible();
 440 }
 441
 442 bool DolphinView::isZoomOutPossible() const
 443 {
 444     return m_controller->isZoomOutPossible();
 445 }
 446
 447 void DolphinView::setSorting(Sorting sorting)
 448 {
 449     if (sorting != this->sorting()) {
 450         updateSorting(sorting);
 451     }
 452 }
 453
 454 DolphinView::Sorting DolphinView::sorting() const
 455 {
 456     return m_proxyModel->sorting();
 457 }
 458
 459 void DolphinView::setSortOrder(Qt::SortOrder order)
 460 {
 461     if (sortOrder() != order) {
 462         updateSortOrder(order);
 463     }
 464 }
 465
 466 Qt::SortOrder DolphinView::sortOrder() const
 467 {
 468     return m_proxyModel->sortOrder();
 469 }
 470
 471 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 472 {
 473     ViewProperties props(m_urlNavigator->url());
 474     props.setAdditionalInfo(info);
 475
 476     m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 477     m_fileItemDelegate->setAdditionalInformation(info);
 478
 479     emit additionalInfoChanged(info);
 480     startDirLister(m_urlNavigator->url(), true);
 481 }
 482
 483 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 484 {
 485     return m_fileItemDelegate->additionalInformation();
 486 }
 487
 488 void DolphinView::goBack()
 489 {
 490     m_urlNavigator->goBack();
 491 }
 492
 493 void DolphinView::goForward()
 494 {
 495     m_urlNavigator->goForward();
 496 }
 497
 498 void DolphinView::goUp()
 499 {
 500     m_urlNavigator->goUp();
 501 }
 502
 503 void DolphinView::goHome()
 504 {
 505     m_urlNavigator->goHome();
 506 }
 507
 508 void DolphinView::setUrlEditable(bool editable)
 509 {
 510     m_urlNavigator->setUrlEditable(editable);
 511 }
 512
 513 bool DolphinView::hasSelection() const
 514 {
 515     return itemView()->selectionModel()->hasSelection();
 516 }
 517
 518 void DolphinView::clearSelection()
 519 {
 520     itemView()->selectionModel()->clear();
 521 }
 522
 523 KFileItemList DolphinView::selectedItems() const
 524 {
 525     const QAbstractItemView* view = itemView();
 526
 527     // Our view has a selection, we will map them back to the DirModel
 528     // and then fill the KFileItemList.
 529     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 530
 531     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 532     KFileItemList itemList;
 533
 534     const QModelIndexList indexList = selection.indexes();
 535     QModelIndexList::const_iterator end = indexList.end();
 536     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 537         Q_ASSERT((*it).isValid());
 538
 539         KFileItem* item = m_dirModel->itemForIndex(*it);
 540         if (item != 0) {
 541             itemList.append(item);
 542         }
 543     }
 544
 545     return itemList;
 546 }
 547
 548 KUrl::List DolphinView::selectedUrls() const
 549 {
 550     KUrl::List urls;
 551
 552     const KFileItemList list = selectedItems();
 553     KFileItemList::const_iterator it = list.begin();
 554     const KFileItemList::const_iterator end = list.end();
 555     while (it != end) {
 556         KFileItem* item = *it;
 557         urls.append(item->url());
 558         ++it;
 559     }
 560
 561     return urls;
 562 }
 563
 564 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 565 {
 566     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 567     return m_dirModel->itemForIndex(dirModelIndex);
 568 }
 569
 570 void DolphinView::rename(const KUrl& source, const QString& newName)
 571 {
 572     bool ok = false;
 573
 574     if (newName.isEmpty() || (source.fileName() == newName)) {
 575         return;
 576     }
 577
 578     KUrl dest(source.upUrl());
 579     dest.addPath(newName);
 580
 581     const bool destExists = KIO::NetAccess::exists(dest,
 582                             false,
 583                             mainWindow()->activeView());
 584     if (destExists) {
 585         // the destination already exists, hence ask the user
 586         // how to proceed...
 587         KIO::RenameDialog renameDialog(this,
 588                                        i18n("File Already Exists"),
 589                                        source.path(),
 590                                        dest.path(),
 591                                        KIO::M_OVERWRITE);
 592         switch (renameDialog.exec()) {
 593         case KIO::R_OVERWRITE:
 594             // the destination should be overwritten
 595             ok = KIO::NetAccess::file_move(source, dest, -1, true);
 596             break;
 597
 598         case KIO::R_RENAME: {
 599             // a new name for the destination has been used
 600             KUrl newDest(renameDialog.newDestUrl());
 601             ok = KIO::NetAccess::file_move(source, newDest);
 602             break;
 603         }
 604
 605         default:
 606             // the renaming operation has been canceled
 607             return;
 608         }
 609     } else {
 610         // no destination exists, hence just move the file to
 611         // do the renaming
 612         ok = KIO::NetAccess::file_move(source, dest);
 613     }
 614
 615     const QString destFileName = dest.fileName();
 616     if (ok) {
 617         m_statusBar->setMessage(i18n("Renamed file '%1' to '%2'.", source.fileName(), destFileName),
 618                                 DolphinStatusBar::OperationCompleted);
 619
 620         KonqOperations::rename(this, source, destFileName);
 621     } else {
 622         m_statusBar->setMessage(i18n("Renaming of file '%1' to '%2' failed.", source.fileName(), destFileName),
 623                                 DolphinStatusBar::Error);
 624     }
 625 }
 626
 627 void DolphinView::reload()
 628 {
 629     const KUrl& url = m_urlNavigator->url();
 630     changeDirectory(url);
 631     startDirLister(url, true);
 632 }
 633
 634 void DolphinView::refresh()
 635 {
 636     createView();
 637     reload();
 638 }
 639
 640 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 641 {
 642     QWidget::mouseReleaseEvent(event);
 643     mainWindow()->setActiveView(this);
 644 }
 645
 646 DolphinMainWindow* DolphinView::mainWindow() const
 647 {
 648     return m_mainWindow;
 649 }
 650
 651 void DolphinView::changeDirectory(const KUrl& url)
 652 {
 653     if (!isActive()) {
 654         requestActivation();
 655     }
 656
 657     const ViewProperties props(url);
 658
 659     const Mode mode = props.viewMode();
 660     bool changeMode = (m_mode != mode);
 661     if (changeMode && isColumnViewActive()) {
 662         // The column view is active. Only change the
 663         // mode if the current URL is no child of the column view.
 664         if (m_dirLister->url().isParentOf(url)) {
 665             changeMode = false;
 666         }
 667     }
 668
 669     if (changeMode) {
 670         m_mode = mode;
 671         createView();
 672         emit modeChanged();
 673
 674         if (m_mode == ColumnView) {
 675             // The mode has been changed to the Column View. When starting the dir
 676             // lister with DolphinView::startDirLister() it is important to give a
 677             // hint that the dir lister may not keep the current directory
 678             // although this is the default for showing a hierarchy.
 679             m_initializeColumnView = true;
 680         }
 681     }
 682
 683     const bool showHiddenFiles = props.showHiddenFiles();
 684     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 685         m_dirLister->setShowingDotFiles(showHiddenFiles);
 686         emit showHiddenFilesChanged();
 687     }
 688
 689     const bool categorized = props.categorizedSorting();
 690     if (categorized != categorizedSorting()) {
 691         if (supportsCategorizedSorting()) {
 692             Q_ASSERT(m_iconsView != 0);
 693             if (categorized) {
 694                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 695                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 696             } else {
 697                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 698                 m_iconsView->setItemCategorizer(0);
 699                 delete categorizer;
 700             }
 701         }
 702         emit categorizedSortingChanged();
 703     }
 704
 705     const DolphinView::Sorting sorting = props.sorting();
 706     if (sorting != m_proxyModel->sorting()) {
 707         m_proxyModel->setSorting(sorting);
 708         emit sortingChanged(sorting);
 709     }
 710
 711     const Qt::SortOrder sortOrder = props.sortOrder();
 712     if (sortOrder != m_proxyModel->sortOrder()) {
 713         m_proxyModel->setSortOrder(sortOrder);
 714         emit sortOrderChanged(sortOrder);
 715     }
 716
 717     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 718     if (info != m_fileItemDelegate->additionalInformation()) {
 719         m_controller->setShowAdditionalInfo(info != KFileItemDelegate::NoInformation);
 720         m_fileItemDelegate->setAdditionalInformation(info);
 721         emit additionalInfoChanged(info);
 722     }
 723
 724     const bool showPreview = props.showPreview();
 725     if (showPreview != m_controller->showPreview()) {
 726         m_controller->setShowPreview(showPreview);
 727         emit showPreviewChanged();
 728     }
 729
 730     startDirLister(url);
 731     emit urlChanged(url);
 732
 733     m_statusBar->clear();
 734 }
 735
 736 void DolphinView::triggerItem(const QModelIndex& index)
 737 {
 738     if (!isValidNameIndex(index)) {
 739         return;
 740     }
 741
 742     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 743     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 744         // items are selected by the user, hence don't trigger the
 745         // item specified by 'index'
 746         return;
 747     }
 748
 749     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 750     if (item == 0) {
 751         return;
 752     }
 753
 754     // Prefer the local path over the URL. This assures that the
 755     // volume space information is correct. Assuming that the URL is media:/sda1,
 756     // and the local path is /windows/C: For the URL the space info is related
 757     // to the root partition (and hence wrong) and for the local path the space
 758     // info is related to the windows partition (-> correct).
 759     const QString localPath(item->localPath());
 760     KUrl url;
 761     if (localPath.isEmpty()) {
 762         url = item->url();
 763     } else {
 764         url = localPath;
 765     }
 766
 767     if (item->isDir()) {
 768         setUrl(url);
 769     } else if (item->isFile()) {
 770         // allow to browse through ZIP and tar files
 771         KMimeType::Ptr mime = item->mimeTypePtr();
 772         if (mime->is("application/zip")) {
 773             url.setProtocol("zip");
 774             setUrl(url);
 775         } else if (mime->is("application/x-tar") ||
 776                    mime->is("application/x-tarz") ||
 777                    mime->is("application/x-bzip-compressed-tar") ||
 778                    mime->is("application/x-compressed-tar") ||
 779                    mime->is("application/x-tzo")) {
 780             url.setProtocol("tar");
 781             setUrl(url);
 782         } else {
 783             item->run();
 784         }
 785     } else {
 786         item->run();
 787     }
 788 }
 789
 790 void DolphinView::updateProgress(int percent)
 791 {
 792     if (m_showProgress) {
 793         m_statusBar->setProgress(percent);
 794     }
 795 }
 796
 797 void DolphinView::updateItemCount()
 798 {
 799     if (m_showProgress) {
 800         m_statusBar->setProgressText(QString());
 801         m_statusBar->setProgress(100);
 802         m_showProgress = false;
 803     }
 804
 805     KFileItemList items(m_dirLister->items());
 806     KFileItemList::const_iterator it = items.begin();
 807     const KFileItemList::const_iterator end = items.end();
 808
 809     m_fileCount = 0;
 810     m_folderCount = 0;
 811
 812     while (it != end) {
 813         KFileItem* item = *it;
 814         if (item->isDir()) {
 815             ++m_folderCount;
 816         } else {
 817             ++m_fileCount;
 818         }
 819         ++it;
 820     }
 821
 822     updateStatusBar();
 823
 824     m_blockContentsMovedSignal = false;
 825     QTimer::singleShot(0, this, SLOT(restoreContentsPos()));
 826 }
 827
 828 void DolphinView::generatePreviews(const KFileItemList& items)
 829 {
 830     if (m_controller->showPreview()) {
 831
 832         // Must turn QList<KFileItem *> to QList<KFileItem>...
 833         QList<KFileItem> itemsToPreview;
 834         foreach( KFileItem* it, items )
 835             itemsToPreview.append( *it );
 836
 837         KIO::PreviewJob* job = KIO::filePreview(itemsToPreview, 128);
 838         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 839                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 840     }
 841 }
 842
 843 void DolphinView::showPreview(const KFileItem& item, const QPixmap& pixmap)
 844 {
 845     Q_ASSERT(!item.isNull());
 846     if (item.url().directory() != m_dirLister->url().path()) {
 847         // the preview job is still working on items of an older URL, hence
 848         // the item is not part of the directory model anymore
 849         return;
 850     }
 851
 852     const QModelIndex idx = m_dirModel->indexForItem(item);
 853     if (idx.isValid() && (idx.column() == 0)) {
 854         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 855         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 856             KIconEffect iconEffect;
 857             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 858             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 859         } else {
 860             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 861         }
 862     }
 863 }
 864
 865 void DolphinView::restoreContentsPos()
 866 {
 867     KUrl currentUrl = m_urlNavigator->url();
 868     if (!currentUrl.isEmpty()) {
 869         QAbstractItemView* view = itemView();
 870         // TODO: view->setCurrentItem(m_urlNavigator->currentFileName());
 871         QPoint pos = m_urlNavigator->savedPosition();
 872         view->horizontalScrollBar()->setValue(pos.x());
 873         view->verticalScrollBar()->setValue(pos.y());
 874     }
 875 }
 876
 877 void DolphinView::showInfoMessage(const QString& msg)
 878 {
 879     m_statusBar->setMessage(msg, DolphinStatusBar::Information);
 880 }
 881
 882 void DolphinView::showErrorMessage(const QString& msg)
 883 {
 884     m_statusBar->setMessage(msg, DolphinStatusBar::Error);
 885 }
 886
 887 void DolphinView::emitSelectionChangedSignal()
 888 {
 889     emit selectionChanged(DolphinView::selectedItems());
 890 }
 891
 892 void DolphinView::closeFilterBar()
 893 {
 894     m_filterBar->hide();
 895     emit showFilterBarChanged(false);
 896 }
 897
 898 void DolphinView::startDirLister(const KUrl& url, bool reload)
 899 {
 900     if (!url.isValid()) {
 901         const QString location(url.pathOrUrl());
 902         if (location.isEmpty()) {
 903             m_statusBar->setMessage(i18n("The location is empty."), DolphinStatusBar::Error);
 904         } else {
 905             m_statusBar->setMessage(i18n("The location '%1' is invalid.", location),
 906                                     DolphinStatusBar::Error);
 907         }
 908         return;
 909     }
 910
 911     // Only show the directory loading progress if the status bar does
 912     // not contain another progress information. This means that
 913     // the directory loading progress information has the lowest priority.
 914     const QString progressText(m_statusBar->progressText());
 915     m_showProgress = progressText.isEmpty() ||
 916                      (progressText == i18n("Loading folder..."));
 917     if (m_showProgress) {
 918         m_statusBar->setProgressText(i18n("Loading folder..."));
 919         m_statusBar->setProgress(0);
 920     }
 921
 922     m_cutItemsCache.clear();
 923     m_blockContentsMovedSignal = true;
 924     m_dirLister->stop();
 925
 926     bool openDir = true;
 927     bool keepOldDirs = isColumnViewActive() && !m_initializeColumnView;
 928     m_initializeColumnView = false;
 929
 930     if (keepOldDirs) {
 931         if (reload) {
 932             keepOldDirs = false;
 933
 934             const KUrl& dirListerUrl = m_dirLister->url();
 935             if (dirListerUrl.isValid()) {
 936                 const KUrl::List dirs = m_dirLister->directories();
 937                 KUrl url;
 938                 foreach(url, dirs) {
 939                     m_dirLister->updateDirectory(url);
 940                 }
 941                 openDir = false;
 942             }
 943         } else if (m_dirLister->directories().contains(url)) {
 944             // The dir lister contains the directory already, so
 945             // KDirLister::openUrl() may not been invoked twice.
 946             m_dirLister->updateDirectory(url);
 947             openDir = false;
 948         } else {
 949             const KUrl& dirListerUrl = m_dirLister->url();
 950             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 951                 // The current URL is not a child of the dir lister
 952                 // URL. This may happen when e. g. a bookmark has been selected
 953                 // and hence the view must be reset.
 954                 keepOldDirs = false;
 955             }
 956         }
 957     }
 958
 959     if (openDir) {
 960         m_dirLister->openUrl(url, keepOldDirs, reload);
 961     }
 962 }
 963
 964 QString DolphinView::defaultStatusBarText() const
 965 {
 966     return KIO::itemsSummaryString(m_fileCount + m_folderCount,
 967                                    m_fileCount,
 968                                    m_folderCount,
 969                                    0, false);
 970 }
 971
 972 QString DolphinView::selectionStatusBarText() const
 973 {
 974     QString text;
 975     const KFileItemList list = selectedItems();
 976     if (list.isEmpty()) {
 977         // when an item is triggered, it is temporary selected but selectedItems()
 978         // will return an empty list
 979         return QString();
 980     }
 981
 982     int fileCount = 0;
 983     int folderCount = 0;
 984     KIO::filesize_t byteSize = 0;
 985     KFileItemList::const_iterator it = list.begin();
 986     const KFileItemList::const_iterator end = list.end();
 987     while (it != end) {
 988         KFileItem* item = *it;
 989         if (item->isDir()) {
 990             ++folderCount;
 991         } else {
 992             ++fileCount;
 993             byteSize += item->size();
 994         }
 995         ++it;
 996     }
 997
 998     if (folderCount > 0) {
 999         text = i18np("1 Folder selected", "%1 Folders selected", folderCount);
1000         if (fileCount > 0) {
1001             text += ", ";
1002         }
1003     }
1004
1005     if (fileCount > 0) {
1006         const QString sizeText(KIO::convertSize(byteSize));
1007         text += i18np("1 File selected (%2)", "%1 Files selected (%2)", fileCount, sizeText);
1008     }
1009
1010     return text;
1011 }
1012
1013 void DolphinView::showFilterBar(bool show)
1014 {
1015     Q_ASSERT(m_filterBar != 0);
1016     if (show) {
1017         m_filterBar->show();
1018     } else {
1019         m_filterBar->hide();
1020     }
1021 }
1022
1023 void DolphinView::updateStatusBar()
1024 {
1025     // As the item count information is less important
1026     // in comparison with other messages, it should only
1027     // be shown if:
1028     // - the status bar is empty or
1029     // - shows already the item count information or
1030     // - shows only a not very important information
1031     // - if any progress is given don't show the item count info at all
1032     const QString msg(m_statusBar->message());
1033     const bool updateStatusBarMsg = (msg.isEmpty() ||
1034                                      (msg == m_statusBar->defaultText()) ||
1035                                      (m_statusBar->type() == DolphinStatusBar::Information)) &&
1036                                     (m_statusBar->progress() == 100);
1037
1038     const QString text(hasSelection() ? selectionStatusBarText() : defaultStatusBarText());
1039     m_statusBar->setDefaultText(text);
1040
1041     if (updateStatusBarMsg) {
1042         m_statusBar->setMessage(text, DolphinStatusBar::Default);
1043     }
1044 }
1045
1046 void DolphinView::requestActivation()
1047 {
1048     m_mainWindow->setActiveView(this);
1049 }
1050
1051 void DolphinView::changeSelection(const KFileItemList& selection)
1052 {
1053     clearSelection();
1054     if (selection.isEmpty()) {
1055         return;
1056     }
1057     KUrl baseUrl = url();
1058     KUrl url;
1059     QItemSelection new_selection;
1060     foreach(KFileItem* item, selection) {
1061         url = item->url().upUrl();
1062         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1063             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
1064             new_selection.select(index, index);
1065         }
1066     }
1067     itemView()->selectionModel()->select(new_selection,
1068                                          QItemSelectionModel::ClearAndSelect
1069                                          | QItemSelectionModel::Current);
1070 }
1071
1072 void DolphinView::changeNameFilter(const QString& nameFilter)
1073 {
1074     // The name filter of KDirLister does a 'hard' filtering, which
1075     // means that only the items are shown where the names match
1076     // exactly the filter. This is non-transparent for the user, which
1077     // just wants to have a 'soft' filtering: does the name contain
1078     // the filter string?
1079     QString adjustedFilter(nameFilter);
1080     adjustedFilter.insert(0, '*');
1081     adjustedFilter.append('*');
1082
1083     // Use the ProxyModel to filter:
1084     // This code is #ifdefed as setNameFilter behaves
1085     // slightly different than the QSortFilterProxyModel
1086     // as it will not remove directories. I will ask
1087     // our beloved usability experts for input
1088     // -- z.
1089 #if 0
1090     m_dirLister->setNameFilter(adjustedFilter);
1091     m_dirLister->emitChanges();
1092 #else
1093     m_proxyModel->setFilterRegExp(nameFilter);
1094 #endif
1095 }
1096
1097 void DolphinView::openContextMenu(const QPoint& pos)
1098 {
1099     KFileItem* item = 0;
1100
1101     const QModelIndex index = itemView()->indexAt(pos);
1102     if (isValidNameIndex(index)) {
1103         item = fileItem(index);
1104     }
1105
1106     DolphinContextMenu contextMenu(m_mainWindow, item, url());
1107     contextMenu.open();
1108 }
1109
1110 void DolphinView::dropUrls(const KUrl::List& urls,
1111                            const QModelIndex& index,
1112                            QWidget* source)
1113 {
1114     KFileItem* directory = 0;
1115     if (isValidNameIndex(index)) {
1116         KFileItem* item = fileItem(index);
1117         Q_ASSERT(item != 0);
1118         if (item->isDir()) {
1119             // the URLs are dropped above a directory
1120             directory = item;
1121         }
1122     }
1123
1124     if ((directory == 0) && (source == itemView())) {
1125         // The dropping is done into the same viewport where
1126         // the dragging has been started. Just ignore this...
1127         return;
1128     }
1129
1130     const KUrl& destination = (directory == 0) ? url() :
1131                               directory->url();
1132     dropUrls(urls, destination);
1133 }
1134
1135 void DolphinView::dropUrls(const KUrl::List& urls,
1136                            const KUrl& destination)
1137 {
1138     m_mainWindow->dropUrls(urls, destination);
1139 }
1140
1141 void DolphinView::updateSorting(DolphinView::Sorting sorting)
1142 {
1143     ViewProperties props(url());
1144     props.setSorting(sorting);
1145
1146     m_proxyModel->setSorting(sorting);
1147
1148     emit sortingChanged(sorting);
1149 }
1150
1151 void DolphinView::updateSortOrder(Qt::SortOrder order)
1152 {
1153     ViewProperties props(url());
1154     props.setSortOrder(order);
1155
1156     m_proxyModel->setSortOrder(order);
1157
1158     emit sortOrderChanged(order);
1159 }
1160
1161 void DolphinView::emitContentsMoved()
1162 {
1163     if (!m_blockContentsMovedSignal) {
1164         emit contentsMoved(contentsX(), contentsY());
1165     }
1166 }
1167
1168 void DolphinView::updateActivationState()
1169 {
1170     m_urlNavigator->setActive(isActive());
1171
1172     QColor color = KGlobalSettings::baseColor();
1173     if (isActive()) {
1174         emit urlChanged(url());
1175         emit selectionChanged(selectedItems());
1176     } else {
1177         // darken the background if the view is inactive
1178         // TODO: does not work for a black background
1179         color = color.darker(105);
1180     }
1181
1182     QWidget* viewport = itemView()->viewport();
1183     QPalette palette;
1184     palette.setColor(viewport->backgroundRole(), color);
1185     viewport->setPalette(palette);
1186
1187     update();
1188 }
1189
1190 void DolphinView::updateCutItems()
1191 {
1192     // restore the icons of all previously selected items to the
1193     // original state...
1194     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
1195     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
1196     while (it != end) {
1197         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
1198         if (index.isValid()) {
1199             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
1200         }
1201         ++it;
1202     }
1203     m_cutItemsCache.clear();
1204
1205     // ... and apply an item effect to all currently cut items
1206     applyCutItemEffect();
1207 }
1208
1209 void DolphinView::showHoverInformation(const QModelIndex& index)
1210 {
1211     if (hasSelection()) {
1212         return;
1213     }
1214
1215     const KFileItem* item = fileItem(index);
1216     if (item != 0) {
1217         m_statusBar->setMessage(item->getStatusBarInfo(), DolphinStatusBar::Default);
1218         emit requestItemInfo(item->url());
1219     }
1220 }
1221
1222 void DolphinView::clearHoverInformation()
1223 {
1224     m_statusBar->clear();
1225 }
1226
1227
1228 void DolphinView::createView()
1229 {
1230     // delete current view
1231     QAbstractItemView* view = itemView();
1232     if (view != 0) {
1233         m_topLayout->removeWidget(view);
1234         view->close();
1235         if (view == m_iconsView) {
1236             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
1237             m_iconsView->setItemCategorizer(0);
1238             delete categorizer;
1239         }
1240         view->deleteLater();
1241         view = 0;
1242         m_iconsView = 0;
1243         m_detailsView = 0;
1244         m_columnView = 0;
1245         m_fileItemDelegate = 0;
1246     }
1247
1248     Q_ASSERT(m_iconsView == 0);
1249     Q_ASSERT(m_detailsView == 0);
1250     Q_ASSERT(m_columnView == 0);
1251
1252     // ... and recreate it representing the current mode
1253     switch (m_mode) {
1254     case IconsView:
1255         m_iconsView = new DolphinIconsView(this, m_controller);
1256         view = m_iconsView;
1257         break;
1258
1259     case DetailsView:
1260         m_detailsView = new DolphinDetailsView(this, m_controller);
1261         view = m_detailsView;
1262         break;
1263
1264     case ColumnView:
1265         m_columnView = new DolphinColumnView(this, m_controller);
1266         view = m_columnView;
1267         break;
1268     }
1269
1270     Q_ASSERT(view != 0);
1271
1272     m_fileItemDelegate = new KFileItemDelegate(view);
1273     view->setItemDelegate(m_fileItemDelegate);
1274
1275     view->setModel(m_proxyModel);
1276     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
1277
1278     new KMimeTypeResolver(view, m_dirModel);
1279     m_topLayout->insertWidget(1, view);
1280
1281     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
1282             m_controller, SLOT(indicateSelectionChange()));
1283     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
1284             this, SLOT(emitContentsMoved()));
1285     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
1286             this, SLOT(emitContentsMoved()));
1287 }
1288
1289 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
1290 {
1291     QItemSelectionModel* selectionModel = itemView()->selectionModel();
1292     const QAbstractItemModel* itemModel = selectionModel->model();
1293
1294     const QModelIndex topLeft = itemModel->index(0, 0);
1295     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
1296                                     itemModel->columnCount() - 1);
1297
1298     QItemSelection selection(topLeft, bottomRight);
1299     selectionModel->select(selection, flags);
1300 }
1301
1302 QAbstractItemView* DolphinView::itemView() const
1303 {
1304     if (m_detailsView != 0) {
1305         return m_detailsView;
1306     } else if (m_columnView != 0) {
1307         return m_columnView;
1308     }
1309
1310     return m_iconsView;
1311 }
1312
1313 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
1314 {
1315     return index.isValid() && (index.column() == KDirModel::Name);
1316 }
1317
1318 bool DolphinView::isCutItem(const KFileItem& item) const
1319 {
1320     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1321     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
1322
1323     const KUrl& itemUrl = item.url();
1324     KUrl::List::const_iterator it = cutUrls.begin();
1325     const KUrl::List::const_iterator end = cutUrls.end();
1326     while (it != end) {
1327         if (*it == itemUrl) {
1328             return true;
1329         }
1330         ++it;
1331     }
1332
1333     return false;
1334 }
1335
1336 void DolphinView::applyCutItemEffect()
1337 {
1338     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1339     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
1340         return;
1341     }
1342
1343     KFileItemList items(m_dirLister->items());
1344     KFileItemList::const_iterator it = items.begin();
1345     const KFileItemList::const_iterator end = items.end();
1346     while (it != end) {
1347         KFileItem* item = *it;
1348         if (isCutItem(*item)) {
1349             const QModelIndex index = m_dirModel->indexForItem(*item);
1350             const KFileItem* item = m_dirModel->itemForIndex(index);
1351             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
1352             if ((value.type() == QVariant::Icon) && (item != 0)) {
1353                 const QIcon icon(qvariant_cast<QIcon>(value));
1354                 QPixmap pixmap = icon.pixmap(128, 128);
1355
1356                 // remember current pixmap for the item to be able
1357                 // to restore it when other items get cut
1358                 CutItem cutItem;
1359                 cutItem.url = item->url();
1360                 cutItem.pixmap = pixmap;
1361                 m_cutItemsCache.append(cutItem);
1362
1363                 // apply icon effect to the cut item
1364                 KIconEffect iconEffect;
1365                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
1366                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
1367             }
1368         }
1369         ++it;
1370     }
1371 }
1372
1373 #include "dolphinview.moc"