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