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 <KMessageWidget>
  18 #include <KUrlNavigator>
  19
  20 #include <QElapsedTimer>
  21 #include <QPushButton>
  22 #include <QWidget>
  23
  24 #include <initializer_list>
  25
  26 namespace Admin
  27 {
  28 class Bar;
  29 }
  30 class FilterBar;
  31 class QAction;
  32 class QGridLayout;
  33 class QUrl;
  34 namespace Search
  35 {
  36 class Bar;
  37 }
  38 class DolphinStatusBar;
  39 class KFileItemList;
  40 namespace SelectionMode
  41 {
  42 class TopBar;
  43 }
  44
  45 /**
  46  * @return True if the URL protocol is a search URL (e. g. baloosearch:// or filenamesearch://).
  47  */
  48 bool isSearchUrl(const QUrl &url);
  49
  50 /**
  51  * @short Represents a view for the directory content
  52  *        including the navigation bar, filter bar and status bar.
  53  *
  54  * View modes for icons, compact and details are supported. Currently
  55  * Dolphin allows to have up to two views inside the main window.
  56  *
  57  * @see DolphinView
  58  * @see FilterBar
  59  * @see KUrlNavigator
  60  * @see DolphinStatusBar
  61  */
  62 class DolphinViewContainer : public QWidget
  63 {
  64     Q_OBJECT
  65
  66 public:
  67     DolphinViewContainer(const QUrl &url, QWidget *parent);
  68     ~DolphinViewContainer() override;
  69
  70     /**
  71      * Returns the current active URL, where all actions are applied.
  72      * The URL navigator is synchronized with this URL.
  73      */
  74     QUrl url() const;
  75     KFileItem rootItem() const;
  76
  77     /**
  78      * If \a active is true, the view container will marked as active. The active
  79      * view container is defined as view where all actions are applied to.
  80      */
  81     void setActive(bool active);
  82     bool isActive() const;
  83
  84     /**
  85      * If \a grab is set to true, the container automatically grabs the focus
  86      * as soon as the URL has been changed. Per default the grabbing
  87      * of the focus is enabled.
  88      */
  89     void setGrabFocusOnUrlChange(bool grabFocus);
  90
  91     const DolphinStatusBar *statusBar() const;
  92     DolphinStatusBar *statusBar();
  93
  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     const DolphinUrlNavigator *urlNavigator() const;
 104     /**
 105      * @return  An UrlNavigator that is controlling this view
 106      *          or nullptr if there is none.
 107      * @see connectUrlNavigator()
 108      * @see disconnectUrlNavigator()
 109      *
 110      * Use urlNavigatorInternalWithHistory() if you want to access the history.
 111      * @see urlNavigatorInternalWithHistory()
 112      */
 113     DolphinUrlNavigator *urlNavigator();
 114
 115     /**
 116      * @return An UrlNavigator that contains this view's history.
 117      * Use urlNavigator() instead when not accessing the history.
 118      */
 119     const DolphinUrlNavigator *urlNavigatorInternalWithHistory() const;
 120     /**
 121      * @return An UrlNavigator that contains this view's history.
 122      * Use urlNavigator() instead when not accessing the history.
 123      */
 124     DolphinUrlNavigator *urlNavigatorInternalWithHistory();
 125
 126     const DolphinView *view() const;
 127     DolphinView *view();
 128
 129     /**
 130      * @param urlNavigator  The UrlNavigator that is supposed to control
 131      *                      this view.
 132      */
 133     void connectUrlNavigator(DolphinUrlNavigator *urlNavigator);
 134
 135     /**
 136      * Disconnects the navigator that is currently controlling the view.
 137      * This method completely reverses connectUrlNavigator().
 138      */
 139     void disconnectUrlNavigator();
 140
 141     /**
 142      * Sets the visibility of this objects search configuration user interface. This search bar is the primary interface in Dolphin to search for files and
 143      * folders.
 144      *
 145      * The signal searchBarVisibilityChanged will be emitted when the new visibility state is different from the old.
 146      *
 147      * Typically an animation will play when the search bar is shown or hidden, so the visibility of the bar will not necessarily match @p visible when this
 148      * method returns. Instead use isSearchBarVisible(), which will always communicate the visibility state the search bar is heading to.
 149      *
 150      * @see Search::Bar.
 151      * @see isSearchBarVisible().
 152      */
 153     void setSearchBarVisible(bool visible);
 154
 155     /** @returns true if the search bar is visible while not being in the process to hide itself. */
 156     bool isSearchBarVisible() const;
 157
 158     /**
 159      * Moves keyboard focus to the search bar. The search term is fully selected to allow easy replacing.
 160      */
 161     void setFocusToSearchBar();
 162
 163     /**
 164      * Sets a selection mode that is useful for quick and easy selecting or deselecting of files.
 165      * This method is the central authority about enabling or disabling selection mode:
 166      * All other classes that want to enable or disable selection mode should trigger a call of this method.
 167      *
 168      * This method sets the selection mode for the view of this viewContainer and sets the visibility of the
 169      * selection mode top and bottom bar which also belong to this viewContainer.
 170      *
 171      * @param enabled           Whether to enable or disable selection mode.
 172      * @param actionCollection  The collection of actions from which the actions on the bottom bar are retrieved.
 173      * @param bottomBarContents The contents the bar is supposed to show after this call.
 174      */
 175     void setSelectionModeEnabled(bool enabled,
 176                                  KActionCollection *actionCollection = nullptr,
 177                                  SelectionMode::BottomBar::Contents bottomBarContents = SelectionMode::BottomBar::Contents::GeneralContents);
 178     /** @see setSelectionModeEnabled() */
 179     bool isSelectionModeEnabled() const;
 180
 181     /**
 182      * Shows the message \message with the given type \messageType non-modal above the view-content.
 183      * \buttonActions defines actions which the user can trigger as a response to this message. They are presented as buttons below the \message.
 184      */
 185     void showMessage(const QString &message, KMessageWidget::MessageType messageType, std::initializer_list<QAction *> buttonActions = {});
 186
 187     /**
 188      * Forwards to DolphinStatusBar::showProgress(). Only exception: The button to cancel the task is hidden.
 189      * @see DolphinStatusBar::showProgress().
 190      */
 191     void showProgress(const QString &currentlyRunningTaskTitle, int progressPercent);
 192
 193     /**
 194      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
 195      */
 196     void readSettings();
 197
 198     /** @returns true, if the filter bar is visible.
 199      *           false, if it is hidden or currently animating towards a hidden state. */
 200     bool isFilterBarVisible() const;
 201
 202     /**
 203      * @return Text that should be used for the current URL when creating
 204      *         a new place.
 205      */
 206     QString placesText() const;
 207
 208     /**
 209      * Reload the view of this container. This will also hide messages in a messagewidget.
 210      */
 211     void reload();
 212
 213     /**
 214      * @return Returns a Caption suitable for display in the window title.
 215      * It is calculated depending on GeneralSettings::showFullPathInTitlebar().
 216      * If it's false, it calls caption().
 217      */
 218     QString captionWindowTitle() const;
 219
 220     /**
 221      * @return Returns a Caption suitable for display to the user. It is
 222      * calculated depending on settings, if a search is active and other
 223      * factors.
 224      */
 225     QString caption() const;
 226
 227     /**
 228      * Disable/enable the behavior of "select child when moving to parent folder"
 229      * offered by KUrlNavigator.
 230      *
 231      * See KUrlNavigator::urlSelectionRequested
 232      */
 233     void disableUrlNavigatorSelectionRequests();
 234     void enableUrlNavigatorSelectionRequests();
 235     void clearFilterBar();
 236
 237 public Q_SLOTS:
 238     /**
 239      * Sets the current active URL, where all actions are applied. The
 240      * URL navigator is synchronized with this URL. The signals
 241      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 242      * are emitted.
 243      * @see DolphinViewContainer::urlNavigator()
 244      */
 245     void setUrl(const QUrl &url);
 246
 247     /**
 248      * Popups the filter bar above the status bar if \a visible is true.
 249      * It \a visible is true, it is assured that the filter bar gains
 250      * the keyboard focus.
 251      */
 252     void setFilterBarVisible(bool visible);
 253
 254     /** Used to notify the m_selectionModeBottomBar that there is no other ViewContainer in the tab. */
 255     void slotSplitTabDisabled();
 256
 257 Q_SIGNALS:
 258     /**
 259      * Is emitted whenever the filter bar has changed its visibility state.
 260      */
 261     void showFilterBarChanged(bool shown);
 262     /**
 263      * Is emitted whenever a change to the search bar's visibility is invoked. The visibility change might not have actually already taken effect by the time
 264      * this signal is emitted because typically the showing and hiding is animated.
 265      * @param visible The visibility state the search bar is going to end up at.
 266      * @see Search::Bar.
 267      * @see setSearchBarVisible().
 268      * @see isSearchBarVisible().
 269      */
 270     void searchBarVisibilityChanged(bool visible);
 271
 272     void selectionModeChanged(bool enabled);
 273
 274     /**
 275      * Is emitted when the write state of the folder has been changed. The application
 276      * should disable all actions like "Create New..." that depend on the write
 277      * state.
 278      */
 279     void writeStateChanged(bool isFolderWritable);
 280
 281     /**
 282      * Is emitted when the Caption has been changed.
 283      * @see DolphinViewContainer::caption()
 284      */
 285     void captionChanged();
 286
 287     /**
 288      * Is emitted if a new tab should be opened in the background for the URL \a url.
 289      */
 290     void tabRequested(const QUrl &url);
 291
 292     /**
 293      * Is emitted if a new tab should be opened for the URL \a url and set as active.
 294      */
 295     void activeTabRequested(const QUrl &url);
 296
 297 private Q_SLOTS:
 298     /**
 299      * Updates the number of items (= number of files + number of
 300      * directories) in the statusbar. If files are selected, the number
 301      * of selected files and the sum of the filesize is shown. The update
 302      * is done asynchronously, as getting the sum of the
 303      * filesizes can be an expensive operation.
 304      * Unless a previous OperationCompletedMessage was set very shortly before
 305      * calling this method, it will be overwritten (see DolphinStatusBar::setMessage).
 306      * Previous ErrorMessages however are always preserved.
 307      */
 308     void delayedStatusBarUpdate();
 309
 310     /**
 311      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 312      * updates the status bar synchronously.
 313      */
 314     void updateStatusBar();
 315
 316     /**
 317      * Updates the statusbar to show an undetermined progress with the correct
 318      * context information whether a searching or a directory loading is done.
 319      */
 320     void slotDirectoryLoadingStarted();
 321
 322     /**
 323      * Assures that the viewport position is restored and updates the
 324      * statusbar to reflect the current content.
 325      */
 326     void slotDirectoryLoadingCompleted();
 327
 328     /**
 329      * Updates the statusbar to show, that the directory loading has
 330      * been canceled.
 331      */
 332     void slotDirectoryLoadingCanceled();
 333
 334     /**
 335      * Is called if the URL set by DolphinView::setUrl() represents
 336      * a file and not a directory. Takes care to activate the file.
 337      */
 338     void slotUrlIsFileError(const QUrl &url);
 339
 340     /**
 341      * Handles clicking on an item. If the item is a directory, the
 342      * directory is opened in the view. If the item is a file, the file
 343      * gets started by the corresponding application.
 344      */
 345     void slotItemActivated(const KFileItem &item);
 346
 347     /**
 348      * Handles activation of multiple files. The files get started by
 349      * the corresponding applications.
 350      */
 351     void slotItemsActivated(const KFileItemList &items);
 352
 353     /**
 354      * Handles middle click of file. It opens the file passed using the second application associated with the file's mimetype.
 355      */
 356     void slotfileMiddleClickActivated(const KFileItem &item);
 357
 358     /**
 359      * Shows the information for the item \a item inside the statusbar. If the
 360      * item is null, the default statusbar information is shown.
 361      */
 362     void showItemInfo(const KFileItem &item);
 363
 364     void closeFilterBar();
 365
 366     /**
 367      * Filters the currently shown items by \a nameFilter. All items
 368      * which contain the given filter string will be shown.
 369      */
 370     void setNameFilter(const QString &nameFilter);
 371
 372     /**
 373      * Marks the view container as active
 374      * (see DolphinViewContainer::setActive()).
 375      */
 376     void activate();
 377
 378     /**
 379      * Is invoked if the signal urlAboutToBeChanged() from the URL navigator
 380      * is emitted. Tries to save the view-state.
 381      */
 382     void slotUrlNavigatorLocationAboutToBeChanged(const QUrl &url);
 383
 384     /**
 385      * Restores the current view to show \a url and assures
 386      * that the root URL of the view is respected.
 387      */
 388     void slotUrlNavigatorLocationChanged(const QUrl &url);
 389
 390     /**
 391      * @see KUrlNavigator::urlSelectionRequested
 392      */
 393     void slotUrlSelectionRequested(const QUrl &url);
 394
 395     /**
 396      * Is invoked when a redirection is done and changes the
 397      * URL of the URL navigator to \a newUrl without triggering
 398      * a reloading of the directory.
 399      */
 400     void redirect(const QUrl &oldUrl, const QUrl &newUrl);
 401
 402     /** Requests the focus for the view \a m_view. */
 403     void requestFocus();
 404
 405     /**
 406      * Stops the loading of a directory. Is connected with the "stopPressed" signal
 407      * from the statusbar.
 408      */
 409     void stopDirectoryLoading();
 410
 411     void slotStatusBarZoomLevelChanged(int zoomLevel);
 412
 413     /**
 414      * Creates and shows an error message based on \p message and \p kioErrorCode.
 415      */
 416     void slotErrorMessageFromView(const QString &message, const int kioErrorCode);
 417
 418     /**
 419      * Slot that calls showMessage(message, KMessageWidget::Error).
 420      */
 421     void showErrorMessage(const QString &message);
 422
 423     /**
 424      * Is invoked when a KFilePlacesModel has been changed
 425      * @see DolphinPlacesModelSingleton::instance().placesModel()
 426      */
 427     void slotPlacesModelChanged();
 428
 429     void slotHiddenFilesShownChanged(bool showHiddenFiles);
 430     void slotSortHiddenLastChanged(bool hiddenLast);
 431     void slotCurrentDirectoryRemoved();
 432
 433     void slotOpenUrlFinished(KJob *job);
 434
 435 private:
 436     /**
 437      * Saves the state of the current view: contents position,
 438      * root URL, ...
 439      */
 440     void saveViewState();
 441
 442     /**
 443      * Restores the state of the current view iff the URL navigator contains a
 444      * non-empty location state.
 445      */
 446     void tryRestoreViewState();
 447
 448     /**
 449      * @return Path of nearest existing ancestor directory.
 450      */
 451     QString getNearestExistingAncestorOfPath(const QString &path) const;
 452
 453     /**
 454      * Update the geometry of statusbar depending on what mode it is using.
 455      */
 456     void updateStatusBarGeometry();
 457
 458     /**
 459      * @return Preferred geometry of the small statusbar.
 460      */
 461     QRect preferredSmallStatusBarGeometry();
 462
 463     /**
 464      * Check if a folder can be created at url.
 465      * This method supports only local URLs.
 466      */
 467     bool isFolderCreatable(QUrl url);
 468
 469 protected:
 470     bool eventFilter(QObject *object, QEvent *event) override;
 471
 472 private:
 473     QGridLayout *m_topLayout;
 474
 475     /**
 476      * The internal UrlNavigator which is never visible to the user.
 477      * m_urlNavigator is used even when another UrlNavigator is controlling
 478      * the view to keep track of this object's history.
 479      */
 480     std::unique_ptr<DolphinUrlNavigator> m_urlNavigator;
 481
 482     /**
 483      * The UrlNavigator that is currently connected to the view.
 484      * This is a nullptr if no UrlNavigator is connected.
 485      * Otherwise it's one of the UrlNavigators visible in the toolbar.
 486      */
 487     QPointer<DolphinUrlNavigator> m_urlNavigatorConnected;
 488
 489     Search::Bar *m_searchBar;
 490     bool m_searchModeEnabled;
 491
 492     /// A bar shown at the top of the view to signify that the view is currently viewed and acted on with elevated privileges.
 493     Admin::Bar *m_adminBar;
 494     /// An action to switch to the admin protocol. This variable will always be nullptr unless kio-admin was installed. @see Admin::WorkerIntegration.
 495     QAction *m_authorizeToEnterFolderAction;
 496     /// An action to create new folder in case user enters a nonexistent URL in the location bar.
 497     QAction *m_createFolderAction;
 498
 499     KMessageWidget *m_messageWidget;
 500
 501     /// A bar shown at the top of the view to signify that selection mode is currently active.
 502     SelectionMode::TopBar *m_selectionModeTopBar;
 503
 504     DolphinView *m_view;
 505
 506     FilterBar *m_filterBar;
 507
 508     /// A bar shown at the bottom of the view whose contents depend on what the user is currently doing.
 509     SelectionMode::BottomBar *m_selectionModeBottomBar;
 510
 511     DolphinStatusBar *m_statusBar;
 512     QTimer *m_statusBarTimer; // Triggers a delayed update
 513     QElapsedTimer m_statusBarTimestamp; // Time in ms since last update
 514     bool m_grabFocusOnUrlChange;
 515     /**
 516      * The visual state to be applied to the next UrlNavigator that gets
 517      * connected to this ViewContainer.
 518      */
 519     std::unique_ptr<DolphinUrlNavigator::VisualState> m_urlNavigatorVisualState;
 520 };
 521
 522 #endif // DOLPHINVIEWCONTAINER_H