src/dolphinview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   3  *   Copyright (C) 2006 by Gregor Kališnik <gregor@podnapisi.net>          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "dolphinview.h"
  22
  23 #include <QApplication>
  24 #include <QClipboard>
  25 #include <QDropEvent>
  26 #include <QItemSelectionModel>
  27 #include <QMouseEvent>
  28 #include <QVBoxLayout>
  29 #include <QTimer>
  30 #include <QScrollBar>
  31
  32 #include <kdirmodel.h>
  33 #include <kfileitemdelegate.h>
  34 #include <kfileplacesmodel.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_mode(mode),
  71     m_iconSize(0),
  72     m_folderCount(0),
  73     m_fileCount(0),
  74     m_mainWindow(mainWindow),
  75     m_topLayout(0),
  76     m_urlNavigator(0),
  77     m_controller(0),
  78     m_iconsView(0),
  79     m_detailsView(0),
  80     m_columnView(0),
  81     m_fileItemDelegate(0),
  82     m_filterBar(0),
  83     m_statusBar(0),
  84     m_dirModel(0),
  85     m_dirLister(0),
  86     m_proxyModel(0),
  87     m_previewJob(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
 162     createView();
 163
 164     m_iconSize = K3Icon::SizeMedium;
 165
 166     m_filterBar = new FilterBar(this);
 167     m_filterBar->hide();
 168     connect(m_filterBar, SIGNAL(filterChanged(const QString&)),
 169             this, SLOT(changeNameFilter(const QString&)));
 170     connect(m_filterBar, SIGNAL(closeRequest()),
 171             this, SLOT(closeFilterBar()));
 172
 173     m_topLayout->addWidget(m_urlNavigator);
 174     m_topLayout->addWidget(itemView());
 175     m_topLayout->addWidget(m_filterBar);
 176     m_topLayout->addWidget(m_statusBar);
 177 }
 178
 179 DolphinView::~DolphinView()
 180 {
 181     if (m_previewJob != 0) {
 182         m_previewJob->doKill();
 183         m_previewJob = 0;
 184     }
 185
 186     delete m_dirLister;
 187     m_dirLister = 0;
 188 }
 189
 190 void DolphinView::setUrl(const KUrl& url)
 191 {
 192     m_urlNavigator->setUrl(url);
 193     m_controller->setUrl(url);
 194 }
 195
 196 const KUrl& DolphinView::url() const
 197 {
 198     return m_urlNavigator->url();
 199 }
 200
 201 bool DolphinView::isActive() const
 202 {
 203     return m_mainWindow->activeView() == this;
 204 }
 205
 206 void DolphinView::setMode(Mode mode)
 207 {
 208     if (mode == m_mode) {
 209         return; // the wished mode is already set
 210     }
 211
 212     m_mode = mode;
 213
 214     ViewProperties props(m_urlNavigator->url());
 215     props.setViewMode(m_mode);
 216
 217     createView();
 218     startDirLister(m_urlNavigator->url());
 219
 220     emit modeChanged();
 221 }
 222
 223 DolphinView::Mode DolphinView::mode() const
 224 {
 225     return m_mode;
 226 }
 227
 228 void DolphinView::setShowPreview(bool show)
 229 {
 230     ViewProperties props(m_urlNavigator->url());
 231     props.setShowPreview(show);
 232     props.save();
 233
 234     m_controller->setShowPreview(show);
 235
 236     emit showPreviewChanged();
 237     reload();
 238 }
 239
 240 bool DolphinView::showPreview() const
 241 {
 242     return m_controller->showPreview();
 243 }
 244
 245 void DolphinView::setShowHiddenFiles(bool show)
 246 {
 247     if (m_dirLister->showingDotFiles() == show) {
 248         return;
 249     }
 250
 251     ViewProperties props(m_urlNavigator->url());
 252     props.setShowHiddenFiles(show);
 253     props.save();
 254
 255     m_dirLister->setShowingDotFiles(show);
 256     emit showHiddenFilesChanged();
 257
 258     reload();
 259 }
 260
 261 bool DolphinView::showHiddenFiles() const
 262 {
 263     return m_dirLister->showingDotFiles();
 264 }
 265
 266 void DolphinView::setCategorizedSorting(bool categorized)
 267 {
 268     if (!supportsCategorizedSorting() || (categorized == categorizedSorting())) {
 269         return;
 270     }
 271
 272     Q_ASSERT(m_iconsView != 0);
 273     if (categorized) {
 274         Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 275         m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 276     } else {
 277         KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 278         m_iconsView->setItemCategorizer(0);
 279         delete categorizer;
 280     }
 281
 282     ViewProperties props(m_urlNavigator->url());
 283     props.setCategorizedSorting(categorized);
 284     props.save();
 285
 286     emit categorizedSortingChanged();
 287 }
 288
 289 bool DolphinView::categorizedSorting() const
 290 {
 291     if (!supportsCategorizedSorting()) {
 292         return false;
 293     }
 294
 295     Q_ASSERT(m_iconsView != 0);
 296     return m_iconsView->itemCategorizer() != 0;
 297 }
 298
 299 bool DolphinView::supportsCategorizedSorting() const
 300 {
 301     return m_iconsView != 0;
 302 }
 303
 304 void DolphinView::renameSelectedItems()
 305 {
 306     DolphinView* view = mainWindow()->activeView();
 307     const KUrl::List urls = selectedUrls();
 308     if (urls.count() > 1) {
 309         // More than one item has been selected for renaming. Open
 310         // a rename dialog and rename all items afterwards.
 311         RenameDialog dialog(urls);
 312         if (dialog.exec() == QDialog::Rejected) {
 313             return;
 314         }
 315
 316         const QString& newName = dialog.newName();
 317         if (newName.isEmpty()) {
 318             view->statusBar()->setMessage(dialog.errorString(),
 319                                           DolphinStatusBar::Error);
 320         } else {
 321             // TODO: check how this can be integrated into KonqUndoManager/KonqOperations
 322             // as one operation instead of n rename operations like it is done now...
 323             Q_ASSERT(newName.contains('#'));
 324
 325             // iterate through all selected items and rename them...
 326             const int replaceIndex = newName.indexOf('#');
 327             Q_ASSERT(replaceIndex >= 0);
 328             int index = 1;
 329
 330             KUrl::List::const_iterator it = urls.begin();
 331             KUrl::List::const_iterator end = urls.end();
 332             while (it != end) {
 333                 const KUrl& oldUrl = *it;
 334                 QString number;
 335                 number.setNum(index++);
 336
 337                 QString name(newName);
 338                 name.replace(replaceIndex, 1, number);
 339
 340                 if (oldUrl.fileName() != name) {
 341                     KUrl newUrl = oldUrl;
 342                     newUrl.setFileName(name);
 343                     m_mainWindow->rename(oldUrl, newUrl);
 344                 }
 345                 ++it;
 346             }
 347         }
 348     } else {
 349         // Only one item has been selected for renaming. Use the custom
 350         // renaming mechanism from the views.
 351         Q_ASSERT(urls.count() == 1);
 352
 353         // TODO: Think about using KFileItemDelegate as soon as it supports editing.
 354         // Currently the RenameDialog is used, but I'm not sure whether inline renaming
 355         // is a benefit for the user at all -> let's wait for some input first...
 356         RenameDialog dialog(urls);
 357         if (dialog.exec() == QDialog::Rejected) {
 358             return;
 359         }
 360
 361         const QString& newName = dialog.newName();
 362         if (newName.isEmpty()) {
 363             view->statusBar()->setMessage(dialog.errorString(),
 364                                           DolphinStatusBar::Error);
 365         } else {
 366             const KUrl& oldUrl = urls.first();
 367             KUrl newUrl = oldUrl;
 368             newUrl.setFileName(newName);
 369             m_mainWindow->rename(oldUrl, newUrl);
 370         }
 371     }
 372 }
 373
 374 void DolphinView::selectAll()
 375 {
 376     selectAll(QItemSelectionModel::Select);
 377 }
 378
 379 void DolphinView::invertSelection()
 380 {
 381     selectAll(QItemSelectionModel::Toggle);
 382 }
 383
 384 DolphinStatusBar* DolphinView::statusBar() const
 385 {
 386     return m_statusBar;
 387 }
 388
 389 int DolphinView::contentsX() const
 390 {
 391     return itemView()->horizontalScrollBar()->value();
 392 }
 393
 394 int DolphinView::contentsY() const
 395 {
 396     return itemView()->verticalScrollBar()->value();
 397 }
 398
 399 void DolphinView::emitRequestItemInfo(const KUrl& url)
 400 {
 401     emit requestItemInfo(url);
 402 }
 403
 404 bool DolphinView::isFilterBarVisible() const
 405 {
 406     return m_filterBar->isVisible();
 407 }
 408
 409 bool DolphinView::isUrlEditable() const
 410 {
 411     return m_urlNavigator->isUrlEditable();
 412 }
 413
 414 void DolphinView::zoomIn()
 415 {
 416     m_controller->triggerZoomIn();
 417 }
 418
 419 void DolphinView::zoomOut()
 420 {
 421     m_controller->triggerZoomOut();
 422 }
 423
 424 bool DolphinView::isZoomInPossible() const
 425 {
 426     return m_controller->isZoomInPossible();
 427 }
 428
 429 bool DolphinView::isZoomOutPossible() const
 430 {
 431     return m_controller->isZoomOutPossible();
 432 }
 433
 434 void DolphinView::setSorting(Sorting sorting)
 435 {
 436     if (sorting != this->sorting()) {
 437         updateSorting(sorting);
 438     }
 439 }
 440
 441 DolphinView::Sorting DolphinView::sorting() const
 442 {
 443     return m_proxyModel->sorting();
 444 }
 445
 446 void DolphinView::setSortOrder(Qt::SortOrder order)
 447 {
 448     if (sortOrder() != order) {
 449         updateSortOrder(order);
 450     }
 451 }
 452
 453 Qt::SortOrder DolphinView::sortOrder() const
 454 {
 455     return m_proxyModel->sortOrder();
 456 }
 457
 458 void DolphinView::setAdditionalInfo(KFileItemDelegate::AdditionalInformation info)
 459 {
 460     ViewProperties props(m_urlNavigator->url());
 461     props.setAdditionalInfo(info);
 462
 463     m_fileItemDelegate->setAdditionalInformation(info);
 464
 465     emit additionalInfoChanged(info);
 466     reload();
 467 }
 468
 469 KFileItemDelegate::AdditionalInformation DolphinView::additionalInfo() const
 470 {
 471     return m_fileItemDelegate->additionalInformation();
 472 }
 473
 474 void DolphinView::goBack()
 475 {
 476     m_urlNavigator->goBack();
 477 }
 478
 479 void DolphinView::goForward()
 480 {
 481     m_urlNavigator->goForward();
 482 }
 483
 484 void DolphinView::goUp()
 485 {
 486     m_urlNavigator->goUp();
 487 }
 488
 489 void DolphinView::goHome()
 490 {
 491     m_urlNavigator->goHome();
 492 }
 493
 494 void DolphinView::setUrlEditable(bool editable)
 495 {
 496     m_urlNavigator->setUrlEditable(editable);
 497 }
 498
 499 bool DolphinView::hasSelection() const
 500 {
 501     return itemView()->selectionModel()->hasSelection();
 502 }
 503
 504 void DolphinView::clearSelection()
 505 {
 506     itemView()->selectionModel()->clear();
 507 }
 508
 509 KFileItemList DolphinView::selectedItems() const
 510 {
 511     const QAbstractItemView* view = itemView();
 512
 513     // Our view has a selection, we will map them back to the DirModel
 514     // and then fill the KFileItemList.
 515     Q_ASSERT((view != 0) && (view->selectionModel() != 0));
 516
 517     const QItemSelection selection = m_proxyModel->mapSelectionToSource(view->selectionModel()->selection());
 518     KFileItemList itemList;
 519
 520     const QModelIndexList indexList = selection.indexes();
 521     QModelIndexList::const_iterator end = indexList.end();
 522     for (QModelIndexList::const_iterator it = indexList.begin(); it != end; ++it) {
 523         Q_ASSERT((*it).isValid());
 524
 525         KFileItem* item = m_dirModel->itemForIndex(*it);
 526         if (item != 0) {
 527             itemList.append(item);
 528         }
 529     }
 530
 531     return itemList;
 532 }
 533
 534 KUrl::List DolphinView::selectedUrls() const
 535 {
 536     KUrl::List urls;
 537
 538     const KFileItemList list = selectedItems();
 539     KFileItemList::const_iterator it = list.begin();
 540     const KFileItemList::const_iterator end = list.end();
 541     while (it != end) {
 542         KFileItem* item = *it;
 543         urls.append(item->url());
 544         ++it;
 545     }
 546
 547     return urls;
 548 }
 549
 550 KFileItem* DolphinView::fileItem(const QModelIndex index) const
 551 {
 552     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 553     return m_dirModel->itemForIndex(dirModelIndex);
 554 }
 555
 556 void DolphinView::rename(const KUrl& source, const QString& newName)
 557 {
 558     bool ok = false;
 559
 560     if (newName.isEmpty() || (source.fileName() == newName)) {
 561         return;
 562     }
 563
 564     KUrl dest(source.upUrl());
 565     dest.addPath(newName);
 566
 567     const bool destExists = KIO::NetAccess::exists(dest,
 568                             false,
 569                             mainWindow()->activeView());
 570     if (destExists) {
 571         // the destination already exists, hence ask the user
 572         // how to proceed...
 573         KIO::RenameDialog renameDialog(this,
 574                                        i18n("File Already Exists"),
 575                                        source.path(),
 576                                        dest.path(),
 577                                        KIO::M_OVERWRITE);
 578         switch (renameDialog.exec()) {
 579         case KIO::R_OVERWRITE:
 580             // the destination should be overwritten
 581             ok = KIO::NetAccess::file_move(source, dest, -1, true);
 582             break;
 583
 584         case KIO::R_RENAME: {
 585             // a new name for the destination has been used
 586             KUrl newDest(renameDialog.newDestUrl());
 587             ok = KIO::NetAccess::file_move(source, newDest);
 588             break;
 589         }
 590
 591         default:
 592             // the renaming operation has been canceled
 593             reload();
 594             return;
 595         }
 596     } else {
 597         // no destination exists, hence just move the file to
 598         // do the renaming
 599         ok = KIO::NetAccess::file_move(source, dest);
 600     }
 601
 602     const QString destFileName = dest.fileName();
 603     if (ok) {
 604         m_statusBar->setMessage(i18n("Renamed file '%1' to '%2'.", source.fileName(), destFileName),
 605                                 DolphinStatusBar::OperationCompleted);
 606
 607         KonqOperations::rename(this, source, destFileName);
 608     } else {
 609         m_statusBar->setMessage(i18n("Renaming of file '%1' to '%2' failed.", source.fileName(), destFileName),
 610                                 DolphinStatusBar::Error);
 611         reload();
 612     }
 613 }
 614
 615 void DolphinView::reload()
 616 {
 617     const KUrl& url = m_urlNavigator->url();
 618     changeDirectory(url);
 619     startDirLister(url, true);
 620 }
 621
 622 void DolphinView::mouseReleaseEvent(QMouseEvent* event)
 623 {
 624     QWidget::mouseReleaseEvent(event);
 625     mainWindow()->setActiveView(this);
 626 }
 627
 628 DolphinMainWindow* DolphinView::mainWindow() const
 629 {
 630     return m_mainWindow;
 631 }
 632
 633 void DolphinView::changeDirectory(const KUrl& url)
 634 {
 635     if (!isActive()) {
 636         requestActivation();
 637     }
 638
 639     const ViewProperties props(url);
 640
 641     const Mode mode = props.viewMode();
 642     bool changeMode = (m_mode != mode);
 643     if (changeMode && isColumnViewActive()) {
 644         // The column view is active. Only change the
 645         // mode if the current URL is no child of the column view.
 646         if (m_dirLister->url().isParentOf(url)) {
 647             changeMode = false;
 648         }
 649     }
 650
 651     if (changeMode) {
 652         m_mode = mode;
 653         createView();
 654         emit modeChanged();
 655     }
 656
 657     const bool showHiddenFiles = props.showHiddenFiles();
 658     if (showHiddenFiles != m_dirLister->showingDotFiles()) {
 659         m_dirLister->setShowingDotFiles(showHiddenFiles);
 660         emit showHiddenFilesChanged();
 661     }
 662
 663     const bool categorized = props.categorizedSorting();
 664     if (categorized != categorizedSorting()) {
 665         if (supportsCategorizedSorting()) {
 666             Q_ASSERT(m_iconsView != 0);
 667             if (categorized) {
 668                 Q_ASSERT(m_iconsView->itemCategorizer() == 0);
 669                 m_iconsView->setItemCategorizer(new DolphinItemCategorizer());
 670             } else {
 671                 KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
 672                 m_iconsView->setItemCategorizer(0);
 673                 delete categorizer;
 674             }
 675         }
 676         emit categorizedSortingChanged();
 677     }
 678
 679     const DolphinView::Sorting sorting = props.sorting();
 680     if (sorting != m_proxyModel->sorting()) {
 681         m_proxyModel->setSorting(sorting);
 682         emit sortingChanged(sorting);
 683     }
 684
 685     const Qt::SortOrder sortOrder = props.sortOrder();
 686     if (sortOrder != m_proxyModel->sortOrder()) {
 687         m_proxyModel->setSortOrder(sortOrder);
 688         emit sortOrderChanged(sortOrder);
 689     }
 690
 691     KFileItemDelegate::AdditionalInformation info = props.additionalInfo();
 692     if (info != m_fileItemDelegate->additionalInformation()) {
 693         m_fileItemDelegate->setAdditionalInformation(info);
 694
 695         emit additionalInfoChanged(info);
 696     }
 697
 698     const bool showPreview = props.showPreview();
 699     if (showPreview != m_controller->showPreview()) {
 700         m_controller->setShowPreview(showPreview);
 701         emit showPreviewChanged();
 702     }
 703
 704     startDirLister(url);
 705     emit urlChanged(url);
 706
 707     m_statusBar->clear();
 708 }
 709
 710 void DolphinView::triggerItem(const QModelIndex& index)
 711 {
 712     if (!isValidNameIndex(index)) {
 713         return;
 714     }
 715
 716     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 717     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 718         // items are selected by the user, hence don't trigger the
 719         // item specified by 'index'
 720         return;
 721     }
 722
 723     KFileItem* item = m_dirModel->itemForIndex(m_proxyModel->mapToSource(index));
 724     if (item == 0) {
 725         return;
 726     }
 727
 728     // Prefer the local path over the URL. This assures that the
 729     // volume space information is correct. Assuming that the URL is media:/sda1,
 730     // and the local path is /windows/C: For the URL the space info is related
 731     // to the root partition (and hence wrong) and for the local path the space
 732     // info is related to the windows partition (-> correct).
 733     const QString localPath(item->localPath());
 734     KUrl url;
 735     if (localPath.isEmpty()) {
 736         url = item->url();
 737     } else {
 738         url = localPath;
 739     }
 740
 741     if (item->isDir()) {
 742         setUrl(url);
 743     } else if (item->isFile()) {
 744         // allow to browse through ZIP and tar files
 745         KMimeType::Ptr mime = item->mimeTypePtr();
 746         if (mime->is("application/zip")) {
 747             url.setProtocol("zip");
 748             setUrl(url);
 749         } else if (mime->is("application/x-tar") ||
 750                    mime->is("application/x-tarz") ||
 751                    mime->is("application/x-bzip-compressed-tar") ||
 752                    mime->is("application/x-compressed-tar") ||
 753                    mime->is("application/x-tzo")) {
 754             url.setProtocol("tar");
 755             setUrl(url);
 756         } else {
 757             item->run();
 758         }
 759     } else {
 760         item->run();
 761     }
 762 }
 763
 764 void DolphinView::updateProgress(int percent)
 765 {
 766     if (m_showProgress) {
 767         m_statusBar->setProgress(percent);
 768     }
 769 }
 770
 771 void DolphinView::updateItemCount()
 772 {
 773     if (m_showProgress) {
 774         m_statusBar->setProgressText(QString());
 775         m_statusBar->setProgress(100);
 776         m_showProgress = false;
 777     }
 778
 779     KFileItemList items(m_dirLister->items());
 780     KFileItemList::const_iterator it = items.begin();
 781     const KFileItemList::const_iterator end = items.end();
 782
 783     m_fileCount = 0;
 784     m_folderCount = 0;
 785
 786     while (it != end) {
 787         KFileItem* item = *it;
 788         if (item->isDir()) {
 789             ++m_folderCount;
 790         } else {
 791             ++m_fileCount;
 792         }
 793         ++it;
 794     }
 795
 796     updateStatusBar();
 797
 798     m_blockContentsMovedSignal = false;
 799     QTimer::singleShot(0, this, SLOT(restoreContentsPos()));
 800 }
 801
 802 void DolphinView::generatePreviews(const KFileItemList& items)
 803 {
 804     if (m_controller->showPreview()) {
 805         if (m_previewJob != 0) {
 806             m_previewJob->doKill();
 807         }
 808         m_previewJob = KIO::filePreview(items, 128);
 809         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem*, const QPixmap&)),
 810                 this, SLOT(showPreview(const KFileItem*, const QPixmap&)));
 811         connect(m_previewJob, SIGNAL(result(KJob*)),
 812                 this, SLOT(slotPreviewResult(KJob*)));
 813     }
 814 }
 815
 816 void DolphinView::showPreview(const KFileItem* item, const QPixmap& pixmap)
 817 {
 818     Q_ASSERT(item != 0);
 819     const QModelIndex idx = m_dirModel->indexForItem(*item);
 820     if (idx.isValid() && (idx.column() == 0)) {
 821         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 822         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(*item)) {
 823             KIconEffect iconEffect;
 824             const QPixmap cutPixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
 825             m_dirModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 826         } else {
 827             m_dirModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 828         }
 829     }
 830 }
 831
 832 void DolphinView::restoreContentsPos()
 833 {
 834     KUrl currentUrl = m_urlNavigator->url();
 835     if (!currentUrl.isEmpty()) {
 836         QAbstractItemView* view = itemView();
 837         // TODO: view->setCurrentItem(m_urlNavigator->currentFileName());
 838         QPoint pos = m_urlNavigator->savedPosition();
 839         view->horizontalScrollBar()->setValue(pos.x());
 840         view->verticalScrollBar()->setValue(pos.y());
 841     }
 842 }
 843
 844 void DolphinView::showInfoMessage(const QString& msg)
 845 {
 846     m_statusBar->setMessage(msg, DolphinStatusBar::Information);
 847 }
 848
 849 void DolphinView::showErrorMessage(const QString& msg)
 850 {
 851     m_statusBar->setMessage(msg, DolphinStatusBar::Error);
 852 }
 853
 854 void DolphinView::emitSelectionChangedSignal()
 855 {
 856     emit selectionChanged(DolphinView::selectedItems());
 857 }
 858
 859 void DolphinView::closeFilterBar()
 860 {
 861     m_filterBar->hide();
 862     emit showFilterBarChanged(false);
 863 }
 864
 865 void DolphinView::startDirLister(const KUrl& url, bool reload)
 866 {
 867     if (!url.isValid()) {
 868         const QString location(url.pathOrUrl());
 869         if (location.isEmpty()) {
 870             m_statusBar->setMessage(i18n("The location is empty."), DolphinStatusBar::Error);
 871         } else {
 872             m_statusBar->setMessage(i18n("The location '%1' is invalid.", location),
 873                                     DolphinStatusBar::Error);
 874         }
 875         return;
 876     }
 877
 878     // Only show the directory loading progress if the status bar does
 879     // not contain another progress information. This means that
 880     // the directory loading progress information has the lowest priority.
 881     const QString progressText(m_statusBar->progressText());
 882     m_showProgress = progressText.isEmpty() ||
 883                      (progressText == i18n("Loading folder..."));
 884     if (m_showProgress) {
 885         m_statusBar->setProgressText(i18n("Loading folder..."));
 886         m_statusBar->setProgress(0);
 887     }
 888
 889     m_cutItemsCache.clear();
 890     m_blockContentsMovedSignal = true;
 891     m_dirLister->stop();
 892
 893     if (m_previewJob != 0) {
 894         m_previewJob->doKill();
 895         m_previewJob = 0;
 896     }
 897
 898     bool openDir = true;
 899     bool keepOldDirs = isColumnViewActive();
 900     if (keepOldDirs) {
 901         if (reload) {
 902             keepOldDirs = false;
 903
 904             const KUrl& dirListerUrl = m_dirLister->url();
 905             if (dirListerUrl.isValid()) {
 906                 const KUrl::List dirs = m_dirLister->directories();
 907                 KUrl url;
 908                 foreach(url, dirs) {
 909                     m_dirLister->updateDirectory(url);
 910                 }
 911                 openDir = false;
 912             }
 913         } else if (m_dirLister->directories().contains(url)) {
 914             // The dir lister contains the directory already, so
 915             // KDirLister::openUrl() may not been invoked twice.
 916             m_dirLister->updateDirectory(url);
 917             openDir = false;
 918         } else {
 919             const KUrl& dirListerUrl = m_dirLister->url();
 920             if ((dirListerUrl == url) || !m_dirLister->url().isParentOf(url)) {
 921                 // The current URL is not a child of the dir lister
 922                 // URL. This may happen when e. g. a bookmark has been selected
 923                 // and hence the view must be reset.
 924                 keepOldDirs = false;
 925             }
 926         }
 927     }
 928
 929     if (openDir) {
 930         m_dirLister->openUrl(url, keepOldDirs, reload);
 931     }
 932 }
 933
 934 QString DolphinView::defaultStatusBarText() const
 935 {
 936     return KIO::itemsSummaryString(m_fileCount + m_folderCount,
 937                                    m_fileCount,
 938                                    m_folderCount,
 939                                    0, false);
 940 }
 941
 942 QString DolphinView::selectionStatusBarText() const
 943 {
 944     QString text;
 945     const KFileItemList list = selectedItems();
 946     if (list.isEmpty()) {
 947         // when an item is triggered, it is temporary selected but selectedItems()
 948         // will return an empty list
 949         return QString();
 950     }
 951
 952     int fileCount = 0;
 953     int folderCount = 0;
 954     KIO::filesize_t byteSize = 0;
 955     KFileItemList::const_iterator it = list.begin();
 956     const KFileItemList::const_iterator end = list.end();
 957     while (it != end) {
 958         KFileItem* item = *it;
 959         if (item->isDir()) {
 960             ++folderCount;
 961         } else {
 962             ++fileCount;
 963             byteSize += item->size();
 964         }
 965         ++it;
 966     }
 967
 968     if (folderCount > 0) {
 969         text = i18np("1 Folder selected", "%1 Folders selected", folderCount);
 970         if (fileCount > 0) {
 971             text += ", ";
 972         }
 973     }
 974
 975     if (fileCount > 0) {
 976         const QString sizeText(KIO::convertSize(byteSize));
 977         text += i18np("1 File selected (%2)", "%1 Files selected (%2)", fileCount, sizeText);
 978     }
 979
 980     return text;
 981 }
 982
 983 void DolphinView::showFilterBar(bool show)
 984 {
 985     Q_ASSERT(m_filterBar != 0);
 986     if (show) {
 987         m_filterBar->show();
 988     } else {
 989         m_filterBar->hide();
 990     }
 991 }
 992
 993 void DolphinView::updateStatusBar()
 994 {
 995     // As the item count information is less important
 996     // in comparison with other messages, it should only
 997     // be shown if:
 998     // - the status bar is empty or
 999     // - shows already the item count information or
1000     // - shows only a not very important information
1001     // - if any progress is given don't show the item count info at all
1002     const QString msg(m_statusBar->message());
1003     const bool updateStatusBarMsg = (msg.isEmpty() ||
1004                                      (msg == m_statusBar->defaultText()) ||
1005                                      (m_statusBar->type() == DolphinStatusBar::Information)) &&
1006                                     (m_statusBar->progress() == 100);
1007
1008     const QString text(hasSelection() ? selectionStatusBarText() : defaultStatusBarText());
1009     m_statusBar->setDefaultText(text);
1010
1011     if (updateStatusBarMsg) {
1012         m_statusBar->setMessage(text, DolphinStatusBar::Default);
1013     }
1014 }
1015
1016 void DolphinView::requestActivation()
1017 {
1018     m_mainWindow->setActiveView(this);
1019 }
1020
1021 void DolphinView::changeSelection(const KFileItemList& selection)
1022 {
1023     clearSelection();
1024     if (selection.isEmpty()) {
1025         return;
1026     }
1027     KUrl baseUrl = url();
1028     KUrl url;
1029     QItemSelection new_selection;
1030     foreach(KFileItem* item, selection) {
1031         url = item->url().upUrl();
1032         if (baseUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
1033             QModelIndex index = m_proxyModel->mapFromSource(m_dirModel->indexForItem(*item));
1034             new_selection.select(index, index);
1035         }
1036     }
1037     itemView()->selectionModel()->select(new_selection,
1038                                          QItemSelectionModel::ClearAndSelect
1039                                          | QItemSelectionModel::Current);
1040 }
1041
1042 void DolphinView::changeNameFilter(const QString& nameFilter)
1043 {
1044     // The name filter of KDirLister does a 'hard' filtering, which
1045     // means that only the items are shown where the names match
1046     // exactly the filter. This is non-transparent for the user, which
1047     // just wants to have a 'soft' filtering: does the name contain
1048     // the filter string?
1049     QString adjustedFilter(nameFilter);
1050     adjustedFilter.insert(0, '*');
1051     adjustedFilter.append('*');
1052
1053     // Use the ProxyModel to filter:
1054     // This code is #ifdefed as setNameFilter behaves
1055     // slightly different than the QSortFilterProxyModel
1056     // as it will not remove directories. I will ask
1057     // our beloved usability experts for input
1058     // -- z.
1059 #if 0
1060     m_dirLister->setNameFilter(adjustedFilter);
1061     m_dirLister->emitChanges();
1062 #else
1063     m_proxyModel->setFilterRegExp(nameFilter);
1064 #endif
1065 }
1066
1067 void DolphinView::openContextMenu(const QPoint& pos)
1068 {
1069     KFileItem* item = 0;
1070
1071     const QModelIndex index = itemView()->indexAt(pos);
1072     if (isValidNameIndex(index)) {
1073         item = fileItem(index);
1074     }
1075
1076     DolphinContextMenu contextMenu(m_mainWindow, item, url());
1077     contextMenu.open();
1078 }
1079
1080 void DolphinView::dropUrls(const KUrl::List& urls,
1081                            const QModelIndex& index,
1082                            QWidget* source)
1083 {
1084     KFileItem* directory = 0;
1085     if (isValidNameIndex(index)) {
1086         KFileItem* item = fileItem(index);
1087         Q_ASSERT(item != 0);
1088         if (item->isDir()) {
1089             // the URLs are dropped above a directory
1090             directory = item;
1091         }
1092     }
1093
1094     if ((directory == 0) && (source == itemView())) {
1095         // The dropping is done into the same viewport where
1096         // the dragging has been started. Just ignore this...
1097         return;
1098     }
1099
1100     const KUrl& destination = (directory == 0) ? url() :
1101                               directory->url();
1102     dropUrls(urls, destination);
1103 }
1104
1105 void DolphinView::dropUrls(const KUrl::List& urls,
1106                            const KUrl& destination)
1107 {
1108     m_mainWindow->dropUrls(urls, destination);
1109 }
1110
1111 void DolphinView::updateSorting(DolphinView::Sorting sorting)
1112 {
1113     ViewProperties props(url());
1114     props.setSorting(sorting);
1115
1116     m_proxyModel->setSorting(sorting);
1117
1118     emit sortingChanged(sorting);
1119 }
1120
1121 void DolphinView::updateSortOrder(Qt::SortOrder order)
1122 {
1123     ViewProperties props(url());
1124     props.setSortOrder(order);
1125
1126     m_proxyModel->setSortOrder(order);
1127
1128     emit sortOrderChanged(order);
1129 }
1130
1131 void DolphinView::emitContentsMoved()
1132 {
1133     if (!m_blockContentsMovedSignal) {
1134         emit contentsMoved(contentsX(), contentsY());
1135     }
1136 }
1137
1138 void DolphinView::updateActivationState()
1139 {
1140     m_urlNavigator->setActive(isActive());
1141     if (isActive()) {
1142         emit urlChanged(url());
1143         emit selectionChanged(selectedItems());
1144     }
1145 }
1146
1147 void DolphinView::updateCutItems()
1148 {
1149     // restore the icons of all previously selected items to the
1150     // original state...
1151     QList<CutItem>::const_iterator it = m_cutItemsCache.begin();
1152     QList<CutItem>::const_iterator end = m_cutItemsCache.end();
1153     while (it != end) {
1154         const QModelIndex index = m_dirModel->indexForUrl((*it).url);
1155         if (index.isValid()) {
1156             m_dirModel->setData(index, QIcon((*it).pixmap), Qt::DecorationRole);
1157         }
1158         ++it;
1159     }
1160     m_cutItemsCache.clear();
1161
1162     // ... and apply an item effect to all currently cut items
1163     applyCutItemEffect();
1164 }
1165
1166 void DolphinView::slotPreviewResult(KJob* job)
1167 {
1168     Q_UNUSED(job);
1169     m_previewJob = 0;
1170 }
1171
1172 void DolphinView::createView()
1173 {
1174     // delete current view
1175     QAbstractItemView* view = itemView();
1176     if (view != 0) {
1177         m_topLayout->removeWidget(view);
1178         view->close();
1179         if (view == m_iconsView) {
1180             KItemCategorizer* categorizer = m_iconsView->itemCategorizer();
1181             m_iconsView->setItemCategorizer(0);
1182             delete categorizer;
1183         }
1184         view->deleteLater();
1185         view = 0;
1186         m_iconsView = 0;
1187         m_detailsView = 0;
1188         m_columnView = 0;
1189         m_fileItemDelegate = 0;
1190     }
1191
1192     Q_ASSERT(m_iconsView == 0);
1193     Q_ASSERT(m_detailsView == 0);
1194     Q_ASSERT(m_columnView == 0);
1195
1196     // ... and recreate it representing the current mode
1197     switch (m_mode) {
1198     case IconsView:
1199         m_iconsView = new DolphinIconsView(this, m_controller);
1200         view = m_iconsView;
1201         break;
1202
1203     case DetailsView:
1204         m_detailsView = new DolphinDetailsView(this, m_controller);
1205         view = m_detailsView;
1206         break;
1207
1208     case ColumnView:
1209         m_columnView = new DolphinColumnView(this, m_controller);
1210         view = m_columnView;
1211         break;
1212     }
1213
1214     Q_ASSERT(view != 0);
1215
1216     m_fileItemDelegate = new KFileItemDelegate(view);
1217     view->setItemDelegate(m_fileItemDelegate);
1218
1219     view->setModel(m_proxyModel);
1220     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
1221
1222     new KMimeTypeResolver(view, m_dirModel);
1223     m_topLayout->insertWidget(1, view);
1224
1225     connect(view->selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
1226             m_controller, SLOT(indicateSelectionChange()));
1227     connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
1228             this, SLOT(emitContentsMoved()));
1229     connect(view->horizontalScrollBar(), SIGNAL(valueChanged(int)),
1230             this, SLOT(emitContentsMoved()));
1231 }
1232
1233 void DolphinView::selectAll(QItemSelectionModel::SelectionFlags flags)
1234 {
1235     QItemSelectionModel* selectionModel = itemView()->selectionModel();
1236     const QAbstractItemModel* itemModel = selectionModel->model();
1237
1238     const QModelIndex topLeft = itemModel->index(0, 0);
1239     const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
1240                                     itemModel->columnCount() - 1);
1241
1242     QItemSelection selection(topLeft, bottomRight);
1243     selectionModel->select(selection, flags);
1244 }
1245
1246 QAbstractItemView* DolphinView::itemView() const
1247 {
1248     if (m_detailsView != 0) {
1249         return m_detailsView;
1250     } else if (m_columnView != 0) {
1251         return m_columnView;
1252     }
1253
1254     return m_iconsView;
1255 }
1256
1257 bool DolphinView::isValidNameIndex(const QModelIndex& index) const
1258 {
1259     return index.isValid() && (index.column() == KDirModel::Name);
1260 }
1261
1262 bool DolphinView::isCutItem(const KFileItem& item) const
1263 {
1264     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1265     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
1266
1267     const KUrl& itemUrl = item.url();
1268     KUrl::List::const_iterator it = cutUrls.begin();
1269     const KUrl::List::const_iterator end = cutUrls.end();
1270     while (it != end) {
1271         if (*it == itemUrl) {
1272             return true;
1273         }
1274         ++it;
1275     }
1276
1277     return false;
1278 }
1279
1280 void DolphinView::applyCutItemEffect()
1281 {
1282     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
1283     if (!KonqMimeData::decodeIsCutSelection(mimeData)) {
1284         return;
1285     }
1286
1287     KFileItemList items(m_dirLister->items());
1288     KFileItemList::const_iterator it = items.begin();
1289     const KFileItemList::const_iterator end = items.end();
1290     while (it != end) {
1291         KFileItem* item = *it;
1292         if (isCutItem(*item)) {
1293             const QModelIndex index = m_dirModel->indexForItem(*item);
1294             const KFileItem* item = m_dirModel->itemForIndex(index);
1295             const QVariant value = m_dirModel->data(index, Qt::DecorationRole);
1296             if ((value.type() == QVariant::Icon) && (item != 0)) {
1297                 const QIcon icon(qvariant_cast<QIcon>(value));
1298                 QPixmap pixmap = icon.pixmap(128, 128);
1299
1300                 // remember current pixmap for the item to be able
1301                 // to restore it when other items get cut
1302                 CutItem cutItem;
1303                 cutItem.url = item->url();
1304                 cutItem.pixmap = pixmap;
1305                 m_cutItemsCache.append(cutItem);
1306
1307                 // apply icon effect to the cut item
1308                 KIconEffect iconEffect;
1309                 pixmap = iconEffect.apply(pixmap, K3Icon::Desktop, K3Icon::DisabledState);
1310                 m_dirModel->setData(index, QIcon(pixmap), Qt::DecorationRole);
1311             }
1312         }
1313         ++it;
1314     }
1315 }
1316
1317 #include "dolphinview.moc"