src/dolphinview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006-2009 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
  22 #ifndef DOLPHINVIEW_H
  23 #define DOLPHINVIEW_H
  24
  25 #include <config-nepomuk.h>
  26
  27 #include "libdolphin_export.h"
  28
  29 #include <kparts/part.h>
  30 #include <kfileitem.h>
  31 #include <kfileitemdelegate.h>
  32 #include <kio/fileundomanager.h>
  33 #include <kio/job.h>
  34
  35 #include <QBoxLayout>
  36 #include <QKeyEvent>
  37 #include <QLinkedList>
  38 #include <QListView>
  39 #include <QSet>
  40 #include <QWidget>
  41
  42 typedef KIO::FileUndoManager::CommandType CommandType;
  43
  44 class DolphinController;
  45 class DolphinColumnViewContainer;
  46 class DolphinDetailsView;
  47 class DolphinIconsView;
  48 class DolphinMainWindow;
  49 class DolphinModel;
  50 class DolphinSortFilterProxyModel;
  51 class KFilePreviewGenerator;
  52 class KAction;
  53 class KActionCollection;
  54 class KDirLister;
  55 class KUrl;
  56 class ViewProperties;
  57 class DolphinDetailsViewExpander;
  58
  59 /**
  60  * @short Represents a view for the directory content.
  61  *
  62  * View modes for icons, details and columns are supported. It's
  63  * possible to adjust:
  64  * - sort order
  65  * - sort type
  66  * - show hidden files
  67  * - show previews
  68  *
  69  * @see DolphinIconsView
  70  * @see DolphinDetailsView
  71  * @see DolphinColumnView
  72  */
  73 class LIBDOLPHINPRIVATE_EXPORT DolphinView : public QWidget
  74 {
  75     Q_OBJECT
  76
  77 public:
  78     /**
  79      * Defines the view mode for a directory. The view mode
  80      * can be defined when constructing a DolphinView. The
  81      * view mode is automatically updated if the directory itself
  82      * defines a view mode (see class ViewProperties for details).
  83      */
  84     enum Mode
  85     {
  86         /**
  87          * The directory items are shown as icons including an
  88          * icon name.
  89          */
  90         IconsView = 0,
  91
  92         /**
  93          * The icon, the name and at least the size of the directory
  94          * items are shown in a table. It is possible to add columns
  95          * for date, group and permissions.
  96          */
  97         DetailsView = 1,
  98
  99         /**
 100          * Each folder is shown in a separate column.
 101          */
 102         ColumnView = 2,
 103         MaxModeEnum = ColumnView
 104     };
 105
 106     /** Defines the sort order for the items of a directory. */
 107     enum Sorting
 108     {
 109         SortByName = 0,
 110         SortBySize,
 111         SortByDate,
 112         SortByPermissions,
 113         SortByOwner,
 114         SortByGroup,
 115         SortByType,
 116         SortByRating,
 117         SortByTags,
 118         MaxSortEnum = SortByTags
 119     };
 120
 121     /**
 122      * @param parent           Parent widget of the view.
 123      * @param url              Specifies the content which should be shown.
 124      * @param proxyModel       Used proxy model which specifies the sorting. The
 125      *                         model is not owned by the view and won't get
 126      *                         deleted.
 127      */
 128     DolphinView(QWidget* parent,
 129                 const KUrl& url,
 130                 DolphinSortFilterProxyModel* proxyModel);
 131
 132     virtual ~DolphinView();
 133
 134     /**
 135      * Returns the current active URL, where all actions are applied.
 136      * The URL navigator is synchronized with this URL.
 137      */
 138     const KUrl& url() const;
 139
 140     /**
 141      * Returns the root URL of the view, which is defined as the first
 142      * visible path of DolphinView::url(). Usually the root URL is
 143      * equal to DolphinView::url(), but in the case of the column view
 144      * when 2 columns are shown, the root URL might be:
 145      * /home/peter/Documents
 146      * and DolphinView::url() might return
 147      * /home/peter/Documents/Music/
 148      */
 149     KUrl rootUrl() const;
 150
 151     /**
 152      * If \a active is true, the view will marked as active. The active
 153      * view is defined as view where all actions are applied to.
 154      */
 155     void setActive(bool active);
 156     bool isActive() const;
 157
 158     /**
 159      * Changes the view mode for the current directory to \a mode.
 160      * If the view properties should be remembered for each directory
 161      * (GeneralSettings::globalViewProps() returns false), then the
 162      * changed view mode will be stored automatically.
 163      */
 164     void setMode(Mode mode);
 165     Mode mode() const;
 166
 167     /** See setShowPreview */
 168     bool showPreview() const;
 169
 170     /** See setShowHiddenFiles */
 171     bool showHiddenFiles() const;
 172
 173     /** See setCategorizedSorting */
 174     bool categorizedSorting() const;
 175
 176     /**
 177      * Returns true, if the categorized sorting is supported by the current
 178      * used mode (see DolphinView::setMode()). Currently only DolphinView::IconsView
 179      * supports categorizations. To check whether the categorized
 180      * sorting is set, use DolphinView::categorizedSorting().
 181      */
 182     bool supportsCategorizedSorting() const;
 183
 184     /**
 185      * Returns the selected items. The list is empty if no item has been
 186      * selected.
 187      * @see DolphinView::selectedUrls()
 188      */
 189     KFileItemList selectedItems() const;
 190
 191     /**
 192      * Returns a list of URLs for all selected items. An empty list
 193      * is returned, if no item is selected.
 194      * @see DolphinView::selectedItems()
 195      */
 196     KUrl::List selectedUrls() const;
 197
 198     /**
 199      * Returns the number of selected items (this is faster than
 200      * invoking selectedItems().count()).
 201      */
 202     int selectedItemsCount() const;
 203
 204     QItemSelectionModel* selectionModel() const;
 205
 206     /**
 207      * Sets the upper left position of the view content
 208      * to (x,y). The content of the view might be larger than the visible area
 209      * and hence a scrolling must be done.
 210      */
 211     void setContentsPosition(int x, int y);
 212
 213     /**
 214      * Sets the upper left position of the view content
 215      * to (x,y) after the directory loading is finished.
 216      * This is useful when going back or forward in history.
 217      */
 218     void setRestoredContentsPosition(const QPoint& pos);
 219
 220     /** Returns the upper left position of the view content. */
 221     QPoint contentsPosition() const;
 222
 223     /**
 224      * Sets the zoom level to \a level. It is assured that the used
 225      * level is adjusted to be inside the range ZoomLevelInfo::minimumLevel() and
 226      * ZoomLevelInfo::maximumLevel().
 227      */
 228     void setZoomLevel(int level);
 229     int zoomLevel() const;
 230
 231     /**
 232      * Returns true, if zooming in is possible. If false is returned,
 233      * the maximum zooming level has been reached.
 234      */
 235     bool isZoomInPossible() const;
 236
 237     /**
 238      * Returns true, if zooming out is possible. If false is returned,
 239      * the minimum zooming level has been reached.
 240      */
 241     bool isZoomOutPossible() const;
 242
 243     /** Sets the sort order of the items inside a directory (see DolphinView::Sorting). */
 244     void setSorting(Sorting sorting);
 245
 246     /** Returns the sort order of the items inside a directory (see DolphinView::Sorting). */
 247     Sorting sorting() const;
 248
 249     /** Sets the sort order (Qt::Ascending or Qt::Descending) for the items. */
 250     void setSortOrder(Qt::SortOrder order);
 251
 252     /** Returns the current used sort order (Qt::Ascending or Qt::Descending). */
 253     Qt::SortOrder sortOrder() const;
 254
 255     /** Sets a separate sorting with folders first (true) or a mixed sorting of files and folders (false). */
 256     void setSortFoldersFirst(bool foldersFirst);
 257
 258     /** Returns if files and folders are sorted separately or not. */
 259     bool sortFoldersFirst() const;
 260
 261     /** Sets the additional information which should be shown for the items. */
 262     void setAdditionalInfo(KFileItemDelegate::InformationList info);
 263
 264     /** Returns the additional information which should be shown for the items. */
 265     KFileItemDelegate::InformationList additionalInfo() const;
 266
 267     /** Reloads the current directory. */
 268     void reload();
 269
 270     /**
 271      * Refreshes the view to get synchronized with the (updated) Dolphin settings.
 272      * This method only needs to get invoked if the view settings for the Icons View,
 273      * Details View or Columns View have been changed.
 274      */
 275     void refresh();
 276
 277     /**
 278      * Changes the directory of the view to \a url. If \a rootUrl is empty, the view
 279      * properties from \a url are used for adjusting the view mode and the other properties.
 280      * If \a rootUrl is not empty, the view properties from the root URL are considered
 281      * instead. Specifying a root URL is only required if a view having a different root URL
 282      * (e. g. the column view) should be restored. Usually using DolphinView::setUrl()
 283      * is enough for changing the current URL.
 284      */
 285     void updateView(const KUrl& url, const KUrl& rootUrl);
 286
 287     /**
 288      * Filters the currently shown items by \a nameFilter. All items
 289      * which contain the given filter string will be shown.
 290      */
 291     void setNameFilter(const QString& nameFilter);
 292
 293     /**
 294      * Calculates the number of currently shown files into
 295      * \a fileCount and the number of folders into \a folderCount.
 296      * The size of all files is written into \a totalFileSize.
 297      * It is recommend using this method instead of asking the
 298      * directory lister or the model directly, as it takes
 299      * filtering and hierarchical previews into account.
 300      */
 301     void calculateItemCount(int& fileCount, int& folderCount, KIO::filesize_t& totalFileSize) const;
 302
 303     /**
 304      * Returns a textual representation of the state of the current
 305      * folder or selected items, suitable for use in the status bar.
 306      */
 307     QString statusBarText() const;
 308
 309     /**
 310      * Returns the version control actions that are provided for the items \p items.
 311      * Usually the actions are presented in the context menu.
 312      */
 313     QList<QAction*> versionControlActions(const KFileItemList& items) const;
 314
 315     /**
 316      * Updates the state of the 'Additional Information' actions in \a collection.
 317      */
 318     void updateAdditionalInfoActions(KActionCollection* collection);
 319
 320     /**
 321      * Returns the state of the paste action:
 322      * first is whether the action should be enabled
 323      * second is the text for the action
 324      */
 325     QPair<bool, QString> pasteInfo() const;
 326
 327     /**
 328      * If \a tabsForFiles is true, the signal tabRequested() will also
 329      * emitted also for files. Per default tabs for files is disabled
 330      * and hence the signal tabRequested() will only be emitted for
 331      * directories.
 332      */
 333     void setTabsForFilesEnabled(bool tabsForFiles);
 334     bool isTabsForFilesEnabled() const;
 335
 336     /**
 337      * Marks the item \a url as active item as soon as it has
 338      * been loaded by the directory lister. This is useful mark
 339      * the previously visited directory as active when going
 340      * back in history (the URL is known, but the item is not
 341      * loaded yet).
 342      */
 343     void activateItem(const KUrl& url);
 344
 345     /**
 346      * Returns true if the current view allows folders to be expanded,
 347      * i.e. presents a hierarchical view to the user.
 348      */
 349     bool itemsExpandable() const;
 350
 351     /**
 352      * Restores the view state (current item, contents position, details view expansion state)
 353      */
 354     void restoreState(QDataStream &stream);
 355
 356     /**
 357      * Saves the view state (current item, contents position, details view expansion state)
 358      */
 359     void saveState(QDataStream &stream);
 360
 361 public slots:
 362     /**
 363      * Changes the directory to \a url. If the current directory is equal to
 364      * \a url, nothing will be done (use DolphinView::reload() instead).
 365      */
 366     void setUrl(const KUrl& url);
 367
 368     /**
 369      * Selects all items.
 370      * @see DolphinView::selectedItems()
 371      */
 372     void selectAll();
 373
 374     /**
 375      * Inverts the current selection: selected items get unselected,
 376      * unselected items get selected.
 377      * @see DolphinView::selectedItems()
 378      */
 379     void invertSelection();
 380
 381     /** Returns true, if at least one item is selected. */
 382     bool hasSelection() const;
 383
 384     void clearSelection();
 385
 386     /**
 387      * Request of a selection change. The view will do its best to accommodate
 388      * the request, but it is not guaranteed that all items in \a selection
 389      * will actually get selected. The view will e.g. not select items which
 390      * are not in the currently displayed folder.
 391      */
 392     void changeSelection(const KFileItemList& selection);
 393
 394     /**
 395      * Triggers the renaming of the currently selected items, where
 396      * the user must input a new name for the items.
 397      */
 398     void renameSelectedItems();
 399
 400     /**
 401      * Moves all selected items to the trash.
 402      */
 403     void trashSelectedItems();
 404
 405     /**
 406      * Deletes all selected items.
 407      */
 408     void deleteSelectedItems();
 409
 410     /**
 411      * Copies all selected items to the clipboard and marks
 412      * the items as cut.
 413      */
 414     void cutSelectedItems();
 415
 416     /** Copies all selected items to the clipboard. */
 417     void copySelectedItems();
 418
 419     /** Pastes the clipboard data to this view. */
 420     void paste();
 421
 422     /**
 423      * Pastes the clipboard data into the currently selected
 424      * folder. If the current selection is not exactly one folder, no
 425      * paste operation is done.
 426      */
 427     void pasteIntoFolder();
 428
 429     /**
 430      * Turns on the file preview for the all files of the current directory,
 431      * if \a show is true.
 432      * If the view properties should be remembered for each directory
 433      * (GeneralSettings::globalViewProps() returns false), then the
 434      * preview setting will be stored automatically.
 435      */
 436     void setShowPreview(bool show);
 437
 438     /**
 439      * Shows all hidden files of the current directory,
 440      * if \a show is true.
 441      * If the view properties should be remembered for each directory
 442      * (GeneralSettings::globalViewProps() returns false), then the
 443      * show hidden file setting will be stored automatically.
 444      */
 445     void setShowHiddenFiles(bool show);
 446
 447     /**
 448      * Summarizes all sorted items by their category \a categorized
 449      * is true.
 450      * If the view properties should be remembered for each directory
 451      * (GeneralSettings::globalViewProps() returns false), then the
 452      * categorized sorting setting will be stored automatically.
 453      */
 454     void setCategorizedSorting(bool categorized);
 455
 456     /** Switches between an ascending and descending sorting order. */
 457     void toggleSortOrder();
 458
 459     /** Switches between a separate sorting (with folders first) and a mixed sorting of files and folders. */
 460     void toggleSortFoldersFirst();
 461
 462     /**
 463      * Switches on or off the displaying of additional information
 464      * as specified by \a action.
 465      */
 466     void toggleAdditionalInfo(QAction* action);
 467
 468 signals:
 469     /**
 470      * Is emitted if the view has been activated by e. g. a mouse click.
 471      */
 472     void activated();
 473
 474     /** Is emitted if URL of the view has been changed to \a url. */
 475     void urlChanged(const KUrl& url);
 476
 477     /**
 478      * Is emitted if the view requests a changing of the current
 479      * URL to \a url (see DolphinController::triggerUrlChangeRequest()).
 480      */
 481     void requestUrlChange(const KUrl& url);
 482
 483     /**
 484      * Is emitted when clicking on an item with the left mouse button.
 485      */
 486     void itemTriggered(const KFileItem& item);
 487
 488     /**
 489      * Is emitted if a new tab should be opened for the URL \a url.
 490      */
 491     void tabRequested(const KUrl& url);
 492
 493     /**
 494      * Is emitted if the view mode (IconsView, DetailsView,
 495      * PreviewsView) has been changed.
 496      */
 497     void modeChanged();
 498
 499     /** Is emitted if the 'show preview' property has been changed. */
 500     void showPreviewChanged();
 501
 502     /** Is emitted if the 'show hidden files' property has been changed. */
 503     void showHiddenFilesChanged();
 504
 505     /** Is emitted if the 'categorized sorting' property has been changed. */
 506     void categorizedSortingChanged();
 507
 508     /** Is emitted if the sorting by name, size or date has been changed. */
 509     void sortingChanged(DolphinView::Sorting sorting);
 510
 511     /** Is emitted if the sort order (ascending or descending) has been changed. */
 512     void sortOrderChanged(Qt::SortOrder order);
 513
 514     /** Is emitted if the sorting of files and folders (separate with folders first or mixed) has been changed. */
 515     void sortFoldersFirstChanged(bool foldersFirst);
 516
 517     /** Is emitted if the additional information shown for this view has been changed. */
 518     void additionalInfoChanged();
 519
 520     /** Is emitted if the zoom level has been changed by zooming in or out. */
 521     void zoomLevelChanged(int level);
 522
 523     /**
 524      * Is emitted if information of an item is requested to be shown e. g. in the panel.
 525      * If item is null, no item information request is pending.
 526      */
 527     void requestItemInfo(const KFileItem& item);
 528
 529     /** Is emitted if the contents has been moved to \a x, \a y. */
 530     void contentsMoved(int x, int y);
 531
 532     /**
 533      * Is emitted whenever the selection has been changed.
 534      */
 535     void selectionChanged(const KFileItemList& selection);
 536
 537     /**
 538      * Is emitted if a context menu is requested for the item \a item,
 539      * which is part of \a url. If the item is null, the context menu
 540      * for the URL should be shown and the custom actions \a customActions
 541      * will be added.
 542      */
 543     void requestContextMenu(const KFileItem& item,
 544                             const KUrl& url,
 545                             const QList<QAction*>& customActions);
 546
 547     /**
 548      * Is emitted if an information message with the content \a msg
 549      * should be shown.
 550      */
 551     void infoMessage(const QString& msg);
 552
 553     /**
 554      * Is emitted if an error message with the content \a msg
 555      * should be shown.
 556      */
 557     void errorMessage(const QString& msg);
 558
 559     /**
 560      * Is emitted if an "operation completed" message with the content \a msg
 561      * should be shown.
 562      */
 563     void operationCompletedMessage(const QString& msg);
 564
 565     /**
 566      * Is emitted after DolphinView::setUrl() has been invoked and
 567      * the path \a url is currently loaded. If this signal is emitted,
 568      * it is assured that the view contains already the correct root
 569      * URL and property settings.
 570      */
 571     void startedPathLoading(const KUrl& url);
 572
 573     /**
 574      * Emitted when KDirLister emits redirection.
 575      * Testcase: fish://localhost
 576      */
 577     void redirection(const KUrl& oldUrl, const KUrl& newUrl);
 578
 579 protected:
 580     /** @see QWidget::mouseReleaseEvent */
 581     virtual void mouseReleaseEvent(QMouseEvent* event);
 582     virtual bool eventFilter(QObject* watched, QEvent* event);
 583
 584 private slots:
 585     /**
 586      * Marks the view as active (DolphinView:isActive() will return true)
 587      * and emits the 'activated' signal if it is not already active.
 588      */
 589     void activate();
 590
 591     /**
 592      * If the item \a item is a directory, then this
 593      * directory will be loaded. If the  item is a file, the corresponding
 594      * application will get started.
 595      */
 596     void triggerItem(const KFileItem& index);
 597
 598     /**
 599      * Emits the signal \a selectionChanged() with a small delay. This is
 600      * because getting all file items for the signal can be an expensive
 601      * operation. Fast selection changes are collected in this case and
 602      * the signal is emitted only after no selection change has been done
 603      * within a small delay.
 604      */
 605     void emitDelayedSelectionChangedSignal();
 606
 607     /**
 608      * Is called by emitDelayedSelectionChangedSignal() and emits the
 609      * signal \a selectionChanged() with all selected file items as parameter.
 610      */
 611     void emitSelectionChangedSignal();
 612
 613     /**
 614      * Opens the context menu on position \a pos. The position
 615      * is used to check whether the context menu is related to an
 616      * item or to the viewport.
 617      */
 618     void openContextMenu(const QPoint& pos, const QList<QAction*>& customActions);
 619
 620     /**
 621      * Drops dragged URLs to the destination path \a destPath. If
 622      * the URLs are dropped above an item inside the destination path,
 623      * the item is indicated by \a destItem.
 624      */
 625     void dropUrls(const KFileItem& destItem,
 626                   const KUrl& destPath,
 627                   QDropEvent* event);
 628
 629     /**
 630      * Updates the view properties of the current URL to the
 631      * sorting given by \a sorting.
 632      */
 633     void updateSorting(DolphinView::Sorting sorting);
 634
 635     /**
 636      * Updates the view properties of the current URL to the
 637      * sort order given by \a order.
 638      */
 639     void updateSortOrder(Qt::SortOrder order);
 640
 641     /**
 642      * Updates the view properties of the current URL to the
 643      * sorting of files and folders (separate with folders first or mixed) given by \a foldersFirst.
 644      */
 645     void updateSortFoldersFirst(bool foldersFirst);
 646
 647     /**
 648      * Updates the view properties of the current URL to the
 649      * additional information given by \a info.
 650      */
 651     void updateAdditionalInfo(const KFileItemDelegate::InformationList& info);
 652
 653     /**
 654      * Emits the signal contentsMoved with the current coordinates
 655      * of the viewport as parameters.
 656      */
 657     void emitContentsMoved();
 658
 659     /**
 660      * Updates the status bar to show hover information for the
 661      * item \a item. If currently other items are selected,
 662      * no hover information is shown.
 663      * @see DolphinView::clearHoverInformation()
 664      */
 665     void showHoverInformation(const KFileItem& item);
 666
 667     /**
 668      * Clears the hover information shown in the status bar.
 669      * @see DolphinView::showHoverInformation().
 670      */
 671     void clearHoverInformation();
 672
 673     /**
 674      * Indicates in the status bar that the delete operation
 675      * of the job \a job has been finished.
 676      */
 677     void slotDeleteFileFinished(KJob* job);
 678
 679     /**
 680      * Is emitted if the controller requests a changing of the current
 681      * URL to \a url
 682      */
 683     void slotRequestUrlChange(const KUrl& url);
 684
 685     /**
 686      * Invoked when the directory lister has completed the loading of
 687      * items. Assures that pasted items and renamed items get seleced.
 688      */
 689     void slotDirListerCompleted();
 690
 691     /**
 692      * Invoked when the loading of the directory is finished.
 693      * Restores the active item and the scroll position if possible.
 694      */
 695     void slotLoadingCompleted();
 696
 697     /**
 698      * Is invoked when the KDirLister indicates refreshed items.
 699      */
 700     void slotRefreshItems();
 701
 702     /**
 703      * Observes the item with the URL \a url. As soon as the directory
 704      * model indicates that the item is available, the item will
 705      * get selected and it is assure that the item stays visible.
 706      *
 707      * @see selectAndScrollToCreatedItem()
 708      */
 709     void observeCreatedItem(const KUrl& url);
 710
 711     /**
 712      * Selects and scrolls to the item that got observed
 713      * by observeCreatedItem().
 714      */
 715     void selectAndScrollToCreatedItem();
 716
 717     /**
 718      * Called when a redirection happens.
 719      * Testcase: fish://localhost
 720      */
 721     void slotRedirection(const KUrl& oldUrl, const KUrl& newUrl);
 722
 723     /**
 724      * Restores the contents position, if history information about the old position is available.
 725      */
 726     void restoreContentsPosition();
 727
 728 private:
 729     void loadDirectory(const KUrl& url, bool reload = false);
 730
 731     /**
 732      * Applies the view properties which are defined by the current URL
 733      * to the DolphinView properties.
 734      */
 735     void applyViewProperties();
 736
 737     /**
 738      * Creates a new view representing the given view mode (DolphinView::mode()).
 739      * The current view will get deleted.
 740      */
 741     void createView();
 742
 743     void deleteView();
 744
 745     /**
 746      * Helper method for DolphinView::paste() and DolphinView::pasteIntoFolder().
 747      * Pastes the clipboard data into the URL \a url.
 748      */
 749     void pasteToUrl(const KUrl& url);
 750
 751     /**
 752      * Checks whether the current item view has the same zoom level
 753      * as \a oldZoomLevel. If this is not the case, the zoom level
 754      * of the controller is updated and a zoomLevelChanged() signal
 755      * is emitted.
 756      */
 757     void updateZoomLevel(int oldZoomLevel);
 758
 759     /**
 760      * Returns a list of URLs for all selected items. The list is
 761      * simplified, so that when the URLs are part of different tree
 762      * levels, only the parent is returned.
 763      */
 764     KUrl::List simplifiedSelectedUrls() const;
 765
 766     /**
 767      * Returns the MIME data for all selected items.
 768      */
 769     QMimeData* selectionMimeData() const;
 770
 771     /**
 772      * Is invoked after a paste operation or a drag & drop
 773      * operation and adds the filenames of all URLs from \a mimeData to
 774      * m_newFileNames. This allows to select all newly added
 775      * items in slotDirListerCompleted().
 776      */
 777     void addNewFileNames(const QMimeData* mimeData);
 778
 779 private:
 780     /**
 781      * Abstracts the access to the different view implementations
 782      * for icons-, details- and column-view.
 783      */
 784     class ViewAccessor
 785     {
 786     public:
 787         ViewAccessor(DolphinSortFilterProxyModel* proxyModel);
 788         ~ViewAccessor();
 789
 790         void createView(QWidget* parent, DolphinController* controller, Mode mode);
 791         void deleteView();
 792
 793         /**
 794          * Must be invoked before the URL has been changed and allows view implementations
 795          * like the column view to create a new column.
 796          */
 797         void prepareUrlChange(const KUrl& url);
 798
 799         QAbstractItemView* itemView() const;
 800         KFileItemDelegate* itemDelegate() const;
 801
 802         /**
 803          * Returns the widget that should be added to the layout as target. Usually
 804          * the item view itself is returned, but in the case of the column view
 805          * a container widget is returned.
 806          */
 807         QWidget* layoutTarget() const;
 808
 809         KUrl rootUrl() const;
 810
 811         bool supportsCategorizedSorting() const;
 812         bool itemsExpandable() const;
 813         QSet<KUrl> expandedUrls() const;
 814         const DolphinDetailsViewExpander* setExpandedUrls(const QSet<KUrl>& urlsToExpand);
 815
 816         /**
 817          * Returns true, if a reloading of the items is required
 818          * when the additional information properties have been changed
 819          * by the user.
 820          */
 821         bool reloadOnAdditionalInfoChange() const;
 822
 823         DolphinModel* dirModel() const;
 824         DolphinSortFilterProxyModel* proxyModel() const;
 825         KDirLister* dirLister() const;
 826
 827     private:
 828         DolphinIconsView* m_iconsView;
 829         DolphinDetailsView* m_detailsView;
 830         DolphinColumnViewContainer* m_columnsContainer;
 831         DolphinSortFilterProxyModel* m_proxyModel;
 832         QAbstractItemView* m_dragSource;
 833         QPointer<DolphinDetailsViewExpander> m_detailsViewExpander;
 834     };
 835
 836     bool m_active : 1;
 837     bool m_showPreview : 1;
 838     bool m_loadingDirectory : 1;
 839     bool m_storedCategorizedSorting : 1;
 840     bool m_tabsForFiles : 1;
 841     bool m_isContextMenuOpen : 1;   // TODO: workaround for Qt-issue 207192
 842     bool m_ignoreViewProperties : 1;
 843     bool m_assureVisibleCurrentIndex : 1;
 844     bool m_expanderActive : 1;
 845
 846     Mode m_mode;
 847
 848     DolphinMainWindow* m_mainWindow;
 849     QVBoxLayout* m_topLayout;
 850
 851     DolphinController* m_controller;
 852     ViewAccessor m_viewAccessor;
 853
 854     QItemSelectionModel* m_selectionModel; // allow to switch views without losing the selection
 855     QTimer* m_selectionChangedTimer;
 856
 857     KUrl m_rootUrl;
 858     KUrl m_activeItemUrl;
 859     QPoint m_restoredContentsPosition;
 860     KUrl m_createdItemUrl; // URL for a new item that got created by the "Create New..." menu
 861     KFileItemList m_selectedItems; // this is used for making the View to remember selections after F5
 862
 863     /**
 864      * Remembers the filenames that have been added by a paste operation
 865      * or a drag & drop operation. Allows to select the items in
 866      * slotDirListerCompleted().
 867      */
 868     QSet<QString> m_newFileNames;
 869 };
 870
 871 /// Allow using DolphinView::Mode in QVariant
 872 Q_DECLARE_METATYPE(DolphinView::Mode)
 873
 874 #endif // DOLPHINVIEW_H