src/dolphinview.h

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