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 KUrlNavigator;
  32 class DolphinSearchBox;
  33 class DolphinStatusBar;
  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
  53     {
  54         Information,
  55         Warning,
  56         Error
  57     };
  58
  59     DolphinViewContainer(const QUrl& url, QWidget* parent);
  60     ~DolphinViewContainer() override;
  61
  62     /**
  63      * Returns the current active URL, where all actions are applied.
  64      * The URL navigator is synchronized with this URL.
  65      */
  66     QUrl url() const;
  67
  68     /**
  69      * If \a active is true, the view container will marked as active. The active
  70      * view container is defined as view where all actions are applied to.
  71      */
  72     void setActive(bool active);
  73     bool isActive() const;
  74
  75     /**
  76      * If \a grab is set to true, the container automatically grabs the focus
  77      * as soon as the URL has been changed. Per default the grabbing
  78      * of the focus is enabled.
  79      */
  80     void setAutoGrabFocus(bool grab);
  81     bool autoGrabFocus() const;
  82
  83     QString currentSearchText() const;
  84
  85     const DolphinStatusBar* statusBar() const;
  86     DolphinStatusBar* statusBar();
  87
  88     /**
  89      * @return  An UrlNavigator that is controlling this view
  90      *          or nullptr if there is none.
  91      * @see connectUrlNavigator()
  92      * @see disconnectUrlNavigator()
  93      *
  94      * Use urlNavigatorInternal() if you want to access the history.
  95      * @see urlNavigatorInternal()
  96      */
  97     const DolphinUrlNavigator *urlNavigator() const;
  98     /**
  99      * @return  An UrlNavigator that is controlling this view
 100      *          or nullptr if there is none.
 101      * @see connectUrlNavigator()
 102      * @see disconnectUrlNavigator()
 103      *
 104      * Use urlNavigatorInternal() if you want to access the history.
 105      * @see urlNavigatorInternal()
 106      */
 107     DolphinUrlNavigator *urlNavigator();
 108
 109     /**
 110      * @return An UrlNavigator that contains this view's history.
 111      * Use urlNavigator() instead when not accessing the history.
 112      */
 113     const DolphinUrlNavigator *urlNavigatorInternal() const;
 114     /**
 115      * @return An UrlNavigator that contains this view's history.
 116      * Use urlNavigator() instead when not accessing the history.
 117      */
 118     DolphinUrlNavigator *urlNavigatorInternal();
 119
 120     const DolphinView* view() const;
 121     DolphinView* view();
 122
 123     /**
 124      * @param urlNavigator  The UrlNavigator that is supposed to control
 125      *                      this view.
 126      */
 127     void connectUrlNavigator(DolphinUrlNavigator *urlNavigator);
 128
 129     inline void connectToInternalUrlNavigator()
 130     {
 131         connectUrlNavigator(m_urlNavigator);
 132     }
 133
 134     /**
 135      * Disconnects the navigator that is currently controling the view.
 136      * This method completely reverses connectUrlNavigator().
 137      */
 138     void disconnectUrlNavigator();
 139
 140     /**
 141      * Shows the message \msg with the given type non-modal above
 142      * the view-content.
 143      * @return the KMessageWidget used to show the message
 144      */
 145     KMessageWidget *showMessage(const QString& msg, MessageType type);
 146
 147     /**
 148      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
 149      */
 150     void readSettings();
 151
 152     /** Returns true, if the filter bar is visible. */
 153     bool isFilterBarVisible() const;
 154
 155
 156     /** Returns true if the search mode is enabled. */
 157     bool isSearchModeEnabled() const;
 158
 159     /**
 160      * @return Text that should be used for the current URL when creating
 161      *         a new place.
 162      */
 163     QString placesText() const;
 164
 165     /**
 166      * Reload the view of this container. This will also hide messages in a messagewidget.
 167      */
 168     void reload();
 169
 170     /**
 171      * @return Returns a Caption suitable for display in the window title.
 172      * It is calculated depending on GeneralSettings::showFullPathInTitlebar().
 173      * If it's false, it calls caption().
 174      */
 175     QString captionWindowTitle() const;
 176
 177     /**
 178      * @return Returns a Caption suitable for display to the user. It is
 179      * calculated depending on settings, if a search is active and other
 180      * factors.
 181      */
 182     QString caption() const;
 183
 184 public slots:
 185     /**
 186      * Sets the current active URL, where all actions are applied. The
 187      * URL navigator is synchronized with this URL. The signals
 188      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 189      * are emitted.
 190      * @see DolphinViewContainer::urlNavigator()
 191      */
 192     void setUrl(const QUrl& url);
 193
 194     /**
 195      * Popups the filter bar above the status bar if \a visible is true.
 196      * It \a visible is true, it is assured that the filter bar gains
 197      * the keyboard focus.
 198      */
 199     void setFilterBarVisible(bool visible);
 200
 201     /**
 202      * Enables the search mode, if \p enabled is true. In the search mode the URL navigator
 203      * will be hidden and replaced by a line editor that allows to enter a search term.
 204      */
 205     void setSearchModeEnabled(bool enabled);
 206
 207 signals:
 208     /**
 209      * Is emitted whenever the filter bar has changed its visibility state.
 210      */
 211     void showFilterBarChanged(bool shown);
 212     /**
 213      * Is emitted whenever the search mode has changed its state.
 214      */
 215     void searchModeEnabledChanged(bool enabled);
 216
 217     /**
 218      * Is emitted when the write state of the folder has been changed. The application
 219      * should disable all actions like "Create New..." that depend on the write
 220      * state.
 221      */
 222     void writeStateChanged(bool isFolderWritable);
 223
 224 private slots:
 225     /**
 226      * Updates the number of items (= number of files + number of
 227      * directories) in the statusbar. If files are selected, the number
 228      * of selected files and the sum of the filesize is shown. The update
 229      * is done asynchronously, as getting the sum of the
 230      * filesizes can be an expensive operation.
 231      * Unless a previous OperationCompletedMessage was set very shortly before
 232      * calling this method, it will be overwritten (see DolphinStatusBar::setMessage).
 233      * Previous ErrorMessages however are always preserved.
 234      */
 235     void delayedStatusBarUpdate();
 236
 237     /**
 238      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 239      * updates the status bar synchronously.
 240      */
 241     void updateStatusBar();
 242
 243     void updateDirectoryLoadingProgress(int percent);
 244
 245     void updateDirectorySortingProgress(int percent);
 246
 247     void updateNavigatorWidgetVisibility();
 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     QWidget* m_navigatorWidget;
 373
 374     /**
 375      * The UrlNavigator within the m_navigatorWidget. m_urlNavigator is
 376      * used even when another UrlNavigator is controlling the view to keep
 377      * track of this view containers history.
 378      */
 379     DolphinUrlNavigator *m_urlNavigator;
 380
 381     /**
 382      * The UrlNavigator that is currently connected to the view. This could
 383      * either be m_urlNavigator, the urlNavigator in the toolbar or nullptr.
 384      */
 385     QPointer<DolphinUrlNavigator> m_urlNavigatorConnected;
 386     QPushButton* m_emptyTrashButton;
 387     DolphinSearchBox* m_searchBox;
 388     bool m_searchModeEnabled;
 389     KMessageWidget* m_messageWidget;
 390
 391     DolphinView* m_view;
 392
 393     FilterBar* m_filterBar;
 394
 395     DolphinStatusBar* m_statusBar;
 396     QTimer* m_statusBarTimer;            // Triggers a delayed update
 397     QElapsedTimer m_statusBarTimestamp;  // Time in ms since last update
 398     bool m_autoGrabFocus;
 399
 400 #ifdef HAVE_KACTIVITIES
 401 private:
 402     KActivities::ResourceInstance * m_activityResourceInstance;
 403 #endif
 404 };
 405
 406 #endif // DOLPHINVIEWCONTAINER_H