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