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 #if HAVE_KACTIVITIES
  24 namespace KActivities {
  25     class ResourceInstance;
  26 }
  27 #endif
  28
  29 class FilterBar;
  30 class KMessageWidget;
  31 class QAction;
  32 class QGridLayout;
  33 class QUrl;
  34 class DolphinSearchBox;
  35 class DolphinStatusBar;
  36 namespace SelectionMode {
  37     class TopBar;
  38 }
  39
  40 /**
  41  * @short Represents a view for the directory content
  42  *        including the navigation bar, filter bar and status bar.
  43  *
  44  * View modes for icons, compact and details are supported. Currently
  45  * Dolphin allows to have up to two views inside the main window.
  46  *
  47  * @see DolphinView
  48  * @see FilterBar
  49  * @see KUrlNavigator
  50  * @see DolphinStatusBar
  51  */
  52 class DolphinViewContainer : public QWidget
  53 {
  54     Q_OBJECT
  55
  56 public:
  57     enum MessageType
  58     {
  59         Information,
  60         Warning,
  61         Error
  62     };
  63
  64     DolphinViewContainer(const QUrl& url, QWidget* parent);
  65     ~DolphinViewContainer() override;
  66
  67     /**
  68      * Returns the current active URL, where all actions are applied.
  69      * The URL navigator is synchronized with this URL.
  70      */
  71     QUrl url() const;
  72
  73     /**
  74      * If \a active is true, the view container will marked as active. The active
  75      * view container is defined as view where all actions are applied to.
  76      */
  77     void setActive(bool active);
  78     bool isActive() const;
  79
  80     /**
  81      * If \a grab is set to true, the container automatically grabs the focus
  82      * as soon as the URL has been changed. Per default the grabbing
  83      * of the focus is enabled.
  84      */
  85     void setAutoGrabFocus(bool grab);
  86     bool autoGrabFocus() const;
  87
  88     QString currentSearchText() const;
  89
  90     const DolphinStatusBar* statusBar() const;
  91     DolphinStatusBar* statusBar();
  92
  93     /**
  94      * @return  An UrlNavigator that is controlling this view
  95      *          or nullptr if there is none.
  96      * @see connectUrlNavigator()
  97      * @see disconnectUrlNavigator()
  98      *
  99      * Use urlNavigatorInternalWithHistory() if you want to access the history.
 100      * @see urlNavigatorInternalWithHistory()
 101      */
 102     const DolphinUrlNavigator *urlNavigator() const;
 103     /**
 104      * @return  An UrlNavigator that is controlling this view
 105      *          or nullptr if there is none.
 106      * @see connectUrlNavigator()
 107      * @see disconnectUrlNavigator()
 108      *
 109      * Use urlNavigatorInternalWithHistory() if you want to access the history.
 110      * @see urlNavigatorInternalWithHistory()
 111      */
 112     DolphinUrlNavigator *urlNavigator();
 113
 114     /**
 115      * @return An UrlNavigator that contains this view's history.
 116      * Use urlNavigator() instead when not accessing the history.
 117      */
 118     const DolphinUrlNavigator *urlNavigatorInternalWithHistory() const;
 119     /**
 120      * @return An UrlNavigator that contains this view's history.
 121      * Use urlNavigator() instead when not accessing the history.
 122      */
 123     DolphinUrlNavigator *urlNavigatorInternalWithHistory();
 124
 125     const DolphinView* view() const;
 126     DolphinView* view();
 127
 128     /**
 129      * @param urlNavigator  The UrlNavigator that is supposed to control
 130      *                      this view.
 131      */
 132     void connectUrlNavigator(DolphinUrlNavigator *urlNavigator);
 133
 134     /**
 135      * Disconnects the navigator that is currently controlling the view.
 136      * This method completely reverses connectUrlNavigator().
 137      */
 138     void disconnectUrlNavigator();
 139
 140     /**
 141      * Sets a selection mode that is useful for quick and easy selecting or deselecting of files.
 142      * This method is the central authority about enabling or disabling selection mode:
 143      * All other classes that want to enable or disable selection mode should trigger a call of this method.
 144      *
 145      * This method sets the selection mode for the view of this viewContainer and sets the visibility of the
 146      * selection mode top and bottom bar which also belong to this viewContainer.
 147      *
 148      * @param enabled           Whether to enable or disable selection mode.
 149      * @param actionCollection  The collection of actions from which the actions on the bottom bar are retrieved.
 150      * @param bottomBarContents The contents the bar is supposed to show after this call.
 151      */
 152     void setSelectionModeEnabled(bool enabled, KActionCollection *actionCollection = nullptr, SelectionMode::BottomBar::Contents bottomBarContents = SelectionMode::BottomBar::Contents::GeneralContents);
 153     /** @see setSelectionModeEnabled() */
 154     bool isSelectionModeEnabled() const;
 155
 156     /**
 157      * Shows the message \msg with the given type non-modal above
 158      * the view-content.
 159      */
 160     void showMessage(const QString& msg, MessageType type);
 161
 162     /**
 163      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
 164      */
 165     void readSettings();
 166
 167     /** Returns true, if the filter bar is visible. */
 168     bool isFilterBarVisible() const;
 169
 170
 171     /** Returns true if the search mode is enabled. */
 172     bool isSearchModeEnabled() const;
 173
 174     /**
 175      * @return Text that should be used for the current URL when creating
 176      *         a new place.
 177      */
 178     QString placesText() const;
 179
 180     /**
 181      * Reload the view of this container. This will also hide messages in a messagewidget.
 182      */
 183     void reload();
 184
 185     /**
 186      * @return Returns a Caption suitable for display in the window title.
 187      * It is calculated depending on GeneralSettings::showFullPathInTitlebar().
 188      * If it's false, it calls caption().
 189      */
 190     QString captionWindowTitle() const;
 191
 192     /**
 193      * @return Returns a Caption suitable for display to the user. It is
 194      * calculated depending on settings, if a search is active and other
 195      * factors.
 196      */
 197     QString caption() const;
 198
 199     /**
 200      * Disable/enable the behavior of "select child when moving to parent folder"
 201      * offered by KUrlNavigator.
 202      *
 203      * See KUrlNavigator::urlSelectionRequested
 204      */
 205     void disableUrlNavigatorSelectionRequests();
 206     void enableUrlNavigatorSelectionRequests();
 207
 208 public Q_SLOTS:
 209     /**
 210      * Sets the current active URL, where all actions are applied. The
 211      * URL navigator is synchronized with this URL. The signals
 212      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 213      * are emitted.
 214      * @see DolphinViewContainer::urlNavigator()
 215      */
 216     void setUrl(const QUrl& url);
 217
 218     /**
 219      * Popups the filter bar above the status bar if \a visible is true.
 220      * It \a visible is true, it is assured that the filter bar gains
 221      * the keyboard focus.
 222      */
 223     void setFilterBarVisible(bool visible);
 224
 225     /**
 226      * Enables the search mode, if \p enabled is true. In the search mode the URL navigator
 227      * will be hidden and replaced by a line editor that allows to enter a search term.
 228      */
 229     void setSearchModeEnabled(bool enabled);
 230
 231     /** Used to notify the m_selectionModeBottomBar that there is no other ViewContainer in the tab. */
 232     void slotSplitTabDisabled();
 233
 234 Q_SIGNALS:
 235     /**
 236      * Is emitted whenever the filter bar has changed its visibility state.
 237      */
 238     void showFilterBarChanged(bool shown);
 239     /**
 240      * Is emitted whenever the search mode has changed its state.
 241      */
 242     void searchModeEnabledChanged(bool enabled);
 243
 244     void selectionModeChanged(bool enabled);
 245
 246     /**
 247      * Is emitted when the write state of the folder has been changed. The application
 248      * should disable all actions like "Create New..." that depend on the write
 249      * state.
 250      */
 251     void writeStateChanged(bool isFolderWritable);
 252
 253     /**
 254      * Is emitted when the Caption has been changed.
 255      * @see DolphinViewContainer::caption()
 256      */
 257     void captionChanged();
 258
 259     /**
 260      * Is emitted if a new tab should be opened in the background for the URL \a url.
 261      */
 262     void tabRequested(const QUrl &url);
 263
 264     /**
 265      * Is emitted if a new tab should be opened for the URL \a url and set as active.
 266      */
 267     void activeTabRequested(const QUrl &url);
 268
 269 private Q_SLOTS:
 270     /**
 271      * Updates the number of items (= number of files + number of
 272      * directories) in the statusbar. If files are selected, the number
 273      * of selected files and the sum of the filesize is shown. The update
 274      * is done asynchronously, as getting the sum of the
 275      * filesizes can be an expensive operation.
 276      * Unless a previous OperationCompletedMessage was set very shortly before
 277      * calling this method, it will be overwritten (see DolphinStatusBar::setMessage).
 278      * Previous ErrorMessages however are always preserved.
 279      */
 280     void delayedStatusBarUpdate();
 281
 282     /**
 283      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 284      * updates the status bar synchronously.
 285      */
 286     void updateStatusBar();
 287
 288     void updateDirectoryLoadingProgress(int percent);
 289
 290     void updateDirectorySortingProgress(int percent);
 291
 292     /**
 293      * Updates the statusbar to show an undetermined progress with the correct
 294      * context information whether a searching or a directory loading is done.
 295      */
 296     void slotDirectoryLoadingStarted();
 297
 298     /**
 299      * Assures that the viewport position is restored and updates the
 300      * statusbar to reflect the current content.
 301      */
 302     void slotDirectoryLoadingCompleted();
 303
 304     /**
 305      * Updates the statusbar to show, that the directory loading has
 306      * been canceled.
 307      */
 308     void slotDirectoryLoadingCanceled();
 309
 310     /**
 311      * Is called if the URL set by DolphinView::setUrl() represents
 312      * a file and not a directory. Takes care to activate the file.
 313      */
 314     void slotUrlIsFileError(const QUrl& url);
 315
 316     /**
 317      * Handles clicking on an item. If the item is a directory, the
 318      * directory is opened in the view. If the item is a file, the file
 319      * gets started by the corresponding application.
 320      */
 321     void slotItemActivated(const KFileItem &item);
 322
 323     /**
 324      * Handles activation of multiple files. The files get started by
 325      * the corresponding applications.
 326      */
 327     void slotItemsActivated(const KFileItemList& items);
 328
 329     /**
 330      * Shows the information for the item \a item inside the statusbar. If the
 331      * item is null, the default statusbar information is shown.
 332      */
 333     void showItemInfo(const KFileItem& item);
 334
 335     void closeFilterBar();
 336
 337     /**
 338      * Filters the currently shown items by \a nameFilter. All items
 339      * which contain the given filter string will be shown.
 340      */
 341     void setNameFilter(const QString& nameFilter);
 342
 343     /**
 344      * Marks the view container as active
 345      * (see DolphinViewContainer::setActive()).
 346      */
 347     void activate();
 348
 349     /**
 350      * Is invoked if the signal urlAboutToBeChanged() from the URL navigator
 351      * is emitted. Tries to save the view-state.
 352      */
 353     void slotUrlNavigatorLocationAboutToBeChanged(const QUrl& url);
 354
 355     /**
 356      * Restores the current view to show \a url and assures
 357      * that the root URL of the view is respected.
 358      */
 359     void slotUrlNavigatorLocationChanged(const QUrl& url);
 360
 361     /**
 362      * @see KUrlNavigator::urlSelectionRequested
 363      */
 364     void slotUrlSelectionRequested(const QUrl& url);
 365
 366     /**
 367      * Is invoked when a redirection is done and changes the
 368      * URL of the URL navigator to \a newUrl without triggering
 369      * a reloading of the directory.
 370      */
 371     void redirect(const QUrl& oldUrl, const QUrl& newUrl);
 372
 373     /** Requests the focus for the view \a m_view. */
 374     void requestFocus();
 375
 376     /**
 377      * Gets the search URL from the searchbox and starts searching.
 378      */
 379     void startSearching();
 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 #if HAVE_KACTIVITIES
 473 private:
 474     KActivities::ResourceInstance * m_activityResourceInstance;
 475 #endif
 476 };
 477
 478 #endif // DOLPHINVIEWCONTAINER_H