src/dolphinviewcontainer.h

   1 /*
   2  * SPDX-FileCopyrightText: 2007 Peter Penz <peter.penz19@gmail.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #ifndef DOLPHINVIEWCONTAINER_H
   8 #define DOLPHINVIEWCONTAINER_H
   9
  10 #include "config-dolphin.h"
  11 #include "dolphinurlnavigator.h"
  12 #include "selectionmode/bottombar.h"
  13 #include "views/dolphinview.h"
  14
  15 #include <KFileItem>
  16 #include <KIO/Job>
  17 #include <KUrlNavigator>
  18
  19 #include <QElapsedTimer>
  20 #include <QPushButton>
  21 #include <QWidget>
  22
  23 class FilterBar;
  24 class KMessageWidget;
  25 class QAction;
  26 class QGridLayout;
  27 class QUrl;
  28 class DolphinSearchBox;
  29 class DolphinStatusBar;
  30 namespace SelectionMode
  31 {
  32 class TopBar;
  33 }
  34
  35 /**
  36  * @short Represents a view for the directory content
  37  *        including the navigation bar, filter bar and status bar.
  38  *
  39  * View modes for icons, compact and details are supported. Currently
  40  * Dolphin allows to have up to two views inside the main window.
  41  *
  42  * @see DolphinView
  43  * @see FilterBar
  44  * @see KUrlNavigator
  45  * @see DolphinStatusBar
  46  */
  47 class DolphinViewContainer : public QWidget
  48 {
  49     Q_OBJECT
  50
  51 public:
  52     enum MessageType { Information, Warning, Error };
  53
  54     DolphinViewContainer(const QUrl &url, QWidget *parent);
  55     ~DolphinViewContainer() override;
  56
  57     /**
  58      * Returns the current active URL, where all actions are applied.
  59      * The URL navigator is synchronized with this URL.
  60      */
  61     QUrl url() const;
  62     KFileItem rootItem() const;
  63
  64     /**
  65      * If \a active is true, the view container will marked as active. The active
  66      * view container is defined as view where all actions are applied to.
  67      */
  68     void setActive(bool active);
  69     bool isActive() const;
  70
  71     /**
  72      * If \a grab is set to true, the container automatically grabs the focus
  73      * as soon as the URL has been changed. Per default the grabbing
  74      * of the focus is enabled.
  75      */
  76     void setAutoGrabFocus(bool grab);
  77     bool autoGrabFocus() const;
  78
  79     QString currentSearchText() const;
  80
  81     const DolphinStatusBar *statusBar() const;
  82     DolphinStatusBar *statusBar();
  83
  84     /**
  85      * @return  An UrlNavigator that is controlling this view
  86      *          or nullptr if there is none.
  87      * @see connectUrlNavigator()
  88      * @see disconnectUrlNavigator()
  89      *
  90      * Use urlNavigatorInternalWithHistory() if you want to access the history.
  91      * @see urlNavigatorInternalWithHistory()
  92      */
  93     const DolphinUrlNavigator *urlNavigator() const;
  94     /**
  95      * @return  An UrlNavigator that is controlling this view
  96      *          or nullptr if there is none.
  97      * @see connectUrlNavigator()
  98      * @see disconnectUrlNavigator()
  99      *
 100      * Use urlNavigatorInternalWithHistory() if you want to access the history.
 101      * @see urlNavigatorInternalWithHistory()
 102      */
 103     DolphinUrlNavigator *urlNavigator();
 104
 105     /**
 106      * @return An UrlNavigator that contains this view's history.
 107      * Use urlNavigator() instead when not accessing the history.
 108      */
 109     const DolphinUrlNavigator *urlNavigatorInternalWithHistory() const;
 110     /**
 111      * @return An UrlNavigator that contains this view's history.
 112      * Use urlNavigator() instead when not accessing the history.
 113      */
 114     DolphinUrlNavigator *urlNavigatorInternalWithHistory();
 115
 116     const DolphinView *view() const;
 117     DolphinView *view();
 118
 119     /**
 120      * @param urlNavigator  The UrlNavigator that is supposed to control
 121      *                      this view.
 122      */
 123     void connectUrlNavigator(DolphinUrlNavigator *urlNavigator);
 124
 125     /**
 126      * Disconnects the navigator that is currently controlling the view.
 127      * This method completely reverses connectUrlNavigator().
 128      */
 129     void disconnectUrlNavigator();
 130
 131     /**
 132      * Sets a selection mode that is useful for quick and easy selecting or deselecting of files.
 133      * This method is the central authority about enabling or disabling selection mode:
 134      * All other classes that want to enable or disable selection mode should trigger a call of this method.
 135      *
 136      * This method sets the selection mode for the view of this viewContainer and sets the visibility of the
 137      * selection mode top and bottom bar which also belong to this viewContainer.
 138      *
 139      * @param enabled           Whether to enable or disable selection mode.
 140      * @param actionCollection  The collection of actions from which the actions on the bottom bar are retrieved.
 141      * @param bottomBarContents The contents the bar is supposed to show after this call.
 142      */
 143     void setSelectionModeEnabled(bool enabled,
 144                                  KActionCollection *actionCollection = nullptr,
 145                                  SelectionMode::BottomBar::Contents bottomBarContents = SelectionMode::BottomBar::Contents::GeneralContents);
 146     /** @see setSelectionModeEnabled() */
 147     bool isSelectionModeEnabled() const;
 148
 149     /**
 150      * Shows the message \msg with the given type non-modal above
 151      * the view-content.
 152      */
 153     void showMessage(const QString &msg, MessageType type);
 154
 155     /**
 156      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
 157      */
 158     void readSettings();
 159
 160     /** @returns true, if the filter bar is visible.
 161      *           false, if it is hidden or currently animating towards a hidden state. */
 162     bool isFilterBarVisible() const;
 163
 164     /** Returns true if the search mode is enabled. */
 165     bool isSearchModeEnabled() const;
 166
 167     /**
 168      * @return Text that should be used for the current URL when creating
 169      *         a new place.
 170      */
 171     QString placesText() const;
 172
 173     /**
 174      * Reload the view of this container. This will also hide messages in a messagewidget.
 175      */
 176     void reload();
 177
 178     /**
 179      * @return Returns a Caption suitable for display in the window title.
 180      * It is calculated depending on GeneralSettings::showFullPathInTitlebar().
 181      * If it's false, it calls caption().
 182      */
 183     QString captionWindowTitle() const;
 184
 185     /**
 186      * @return Returns a Caption suitable for display to the user. It is
 187      * calculated depending on settings, if a search is active and other
 188      * factors.
 189      */
 190     QString caption() const;
 191
 192     /**
 193      * Disable/enable the behavior of "select child when moving to parent folder"
 194      * offered by KUrlNavigator.
 195      *
 196      * See KUrlNavigator::urlSelectionRequested
 197      */
 198     void disableUrlNavigatorSelectionRequests();
 199     void enableUrlNavigatorSelectionRequests();
 200     void clearFilterBar();
 201
 202 public Q_SLOTS:
 203     /**
 204      * Sets the current active URL, where all actions are applied. The
 205      * URL navigator is synchronized with this URL. The signals
 206      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 207      * are emitted.
 208      * @see DolphinViewContainer::urlNavigator()
 209      */
 210     void setUrl(const QUrl &url);
 211
 212     /**
 213      * Popups the filter bar above the status bar if \a visible is true.
 214      * It \a visible is true, it is assured that the filter bar gains
 215      * the keyboard focus.
 216      */
 217     void setFilterBarVisible(bool visible);
 218
 219     /**
 220      * Enables the search mode, if \p enabled is true. In the search mode the URL navigator
 221      * will be hidden and replaced by a line editor that allows to enter a search term.
 222      */
 223     void setSearchModeEnabled(bool enabled);
 224
 225     /** Used to notify the m_selectionModeBottomBar that there is no other ViewContainer in the tab. */
 226     void slotSplitTabDisabled();
 227
 228 Q_SIGNALS:
 229     /**
 230      * Is emitted whenever the filter bar has changed its visibility state.
 231      */
 232     void showFilterBarChanged(bool shown);
 233     /**
 234      * Is emitted whenever the search mode has changed its state.
 235      */
 236     void searchModeEnabledChanged(bool enabled);
 237
 238     void selectionModeChanged(bool enabled);
 239
 240     /**
 241      * Is emitted when the write state of the folder has been changed. The application
 242      * should disable all actions like "Create New..." that depend on the write
 243      * state.
 244      */
 245     void writeStateChanged(bool isFolderWritable);
 246
 247     /**
 248      * Is emitted when the Caption has been changed.
 249      * @see DolphinViewContainer::caption()
 250      */
 251     void captionChanged();
 252
 253     /**
 254      * Is emitted if a new tab should be opened in the background for the URL \a url.
 255      */
 256     void tabRequested(const QUrl &url);
 257
 258     /**
 259      * Is emitted if a new tab should be opened for the URL \a url and set as active.
 260      */
 261     void activeTabRequested(const QUrl &url);
 262
 263 private Q_SLOTS:
 264     /**
 265      * Updates the number of items (= number of files + number of
 266      * directories) in the statusbar. If files are selected, the number
 267      * of selected files and the sum of the filesize is shown. The update
 268      * is done asynchronously, as getting the sum of the
 269      * filesizes can be an expensive operation.
 270      * Unless a previous OperationCompletedMessage was set very shortly before
 271      * calling this method, it will be overwritten (see DolphinStatusBar::setMessage).
 272      * Previous ErrorMessages however are always preserved.
 273      */
 274     void delayedStatusBarUpdate();
 275
 276     /**
 277      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 278      * updates the status bar synchronously.
 279      */
 280     void updateStatusBar();
 281
 282     void updateDirectoryLoadingProgress(int percent);
 283
 284     void updateDirectorySortingProgress(int percent);
 285
 286     /**
 287      * Updates the statusbar to show an undetermined progress with the correct
 288      * context information whether a searching or a directory loading is done.
 289      */
 290     void slotDirectoryLoadingStarted();
 291
 292     /**
 293      * Assures that the viewport position is restored and updates the
 294      * statusbar to reflect the current content.
 295      */
 296     void slotDirectoryLoadingCompleted();
 297
 298     /**
 299      * Updates the statusbar to show, that the directory loading has
 300      * been canceled.
 301      */
 302     void slotDirectoryLoadingCanceled();
 303
 304     /**
 305      * Is called if the URL set by DolphinView::setUrl() represents
 306      * a file and not a directory. Takes care to activate the file.
 307      */
 308     void slotUrlIsFileError(const QUrl &url);
 309
 310     /**
 311      * Handles clicking on an item. If the item is a directory, the
 312      * directory is opened in the view. If the item is a file, the file
 313      * gets started by the corresponding application.
 314      */
 315     void slotItemActivated(const KFileItem &item);
 316
 317     /**
 318      * Handles activation of multiple files. The files get started by
 319      * the corresponding applications.
 320      */
 321     void slotItemsActivated(const KFileItemList &items);
 322
 323     /**
 324      * Handles middle click of file. It opens the file passed using the second application associated with the file's mimetype.
 325      */
 326     void slotfileMiddleClickActivated(const KFileItem &item);
 327
 328     /**
 329      * Shows the information for the item \a item inside the statusbar. If the
 330      * item is null, the default statusbar information is shown.
 331      */
 332     void showItemInfo(const KFileItem &item);
 333
 334     void closeFilterBar();
 335
 336     /**
 337      * Filters the currently shown items by \a nameFilter. All items
 338      * which contain the given filter string will be shown.
 339      */
 340     void setNameFilter(const QString &nameFilter);
 341
 342     /**
 343      * Marks the view container as active
 344      * (see DolphinViewContainer::setActive()).
 345      */
 346     void activate();
 347
 348     /**
 349      * Is invoked if the signal urlAboutToBeChanged() from the URL navigator
 350      * is emitted. Tries to save the view-state.
 351      */
 352     void slotUrlNavigatorLocationAboutToBeChanged(const QUrl &url);
 353
 354     /**
 355      * Restores the current view to show \a url and assures
 356      * that the root URL of the view is respected.
 357      */
 358     void slotUrlNavigatorLocationChanged(const QUrl &url);
 359
 360     /**
 361      * @see KUrlNavigator::urlSelectionRequested
 362      */
 363     void slotUrlSelectionRequested(const QUrl &url);
 364
 365     /**
 366      * Is invoked when a redirection is done and changes the
 367      * URL of the URL navigator to \a newUrl without triggering
 368      * a reloading of the directory.
 369      */
 370     void redirect(const QUrl &oldUrl, const QUrl &newUrl);
 371
 372     /** Requests the focus for the view \a m_view. */
 373     void requestFocus();
 374
 375     /**
 376      * Gets the search URL from the searchbox and starts searching.
 377      */
 378     void startSearching();
 379     void openSearchBox();
 380     void closeSearchBox();
 381
 382     /**
 383      * Stops the loading of a directory. Is connected with the "stopPressed" signal
 384      * from the statusbar.
 385      */
 386     void stopDirectoryLoading();
 387
 388     void slotStatusBarZoomLevelChanged(int zoomLevel);
 389
 390     /**
 391      * Slot that calls showMessage(msg, Error).
 392      */
 393     void showErrorMessage(const QString &msg);
 394
 395     /**
 396      * Is invoked when a KFilePlacesModel has been changed
 397      * @see DolphinPlacesModelSingleton::instance().placesModel()
 398      */
 399     void slotPlacesModelChanged();
 400
 401     void slotHiddenFilesShownChanged(bool showHiddenFiles);
 402     void slotSortHiddenLastChanged(bool hiddenLast);
 403     void slotCurrentDirectoryRemoved();
 404
 405     void slotOpenUrlFinished(KJob *job);
 406
 407 private:
 408     /**
 409      * @return True if the URL protocol is a search URL (e. g. baloosearch:// or filenamesearch://).
 410      */
 411     bool isSearchUrl(const QUrl &url) const;
 412
 413     /**
 414      * Saves the state of the current view: contents position,
 415      * root URL, ...
 416      */
 417     void saveViewState();
 418
 419     /**
 420      * Restores the state of the current view iff the URL navigator contains a
 421      * non-empty location state.
 422      */
 423     void tryRestoreViewState();
 424
 425     /**
 426      * @return Path of nearest existing ancestor directory.
 427      */
 428     QString getNearestExistingAncestorOfPath(const QString &path) const;
 429
 430 private:
 431     QGridLayout *m_topLayout;
 432
 433     /**
 434      * The internal UrlNavigator which is never visible to the user.
 435      * m_urlNavigator is used even when another UrlNavigator is controlling
 436      * the view to keep track of this object's history.
 437      */
 438     std::unique_ptr<DolphinUrlNavigator> m_urlNavigator;
 439
 440     /**
 441      * The UrlNavigator that is currently connected to the view.
 442      * This is a nullptr if no UrlNavigator is connected.
 443      * Otherwise it's one of the UrlNavigators visible in the toolbar.
 444      */
 445     QPointer<DolphinUrlNavigator> m_urlNavigatorConnected;
 446
 447     DolphinSearchBox *m_searchBox;
 448     bool m_searchModeEnabled;
 449
 450     KMessageWidget *m_messageWidget;
 451
 452     /// A bar shown at the top of the view to signify that selection mode is currently active.
 453     SelectionMode::TopBar *m_selectionModeTopBar;
 454
 455     DolphinView *m_view;
 456
 457     FilterBar *m_filterBar;
 458
 459     /// A bar shown at the bottom of the view whose contents depend on what the user is currently doing.
 460     SelectionMode::BottomBar *m_selectionModeBottomBar;
 461
 462     DolphinStatusBar *m_statusBar;
 463     QTimer *m_statusBarTimer; // Triggers a delayed update
 464     QElapsedTimer m_statusBarTimestamp; // Time in ms since last update
 465     bool m_autoGrabFocus;
 466     /**
 467      * The visual state to be applied to the next UrlNavigator that gets
 468      * connected to this ViewContainer.
 469      */
 470     std::unique_ptr<DolphinUrlNavigator::VisualState> m_urlNavigatorVisualState;
 471 };
 472
 473 #endif // DOLPHINVIEWCONTAINER_H