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