src/dolphinviewcontainer.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #ifndef DOLPHINVIEWCONTAINER_H
  21 #define DOLPHINVIEWCONTAINER_H
  22
  23 #include <KFileItem>
  24 #include <KCompletion>
  25 #include <KIO/Job>
  26
  27 #include <KUrlNavigator>
  28
  29 #include <QElapsedTimer>
  30 #include <QWidget>
  31
  32 #include <views/dolphinview.h>
  33 #include <config-dolphin.h>
  34
  35 #ifdef KF5Activities_FOUND
  36 namespace KActivities {
  37     class ResourceInstance;
  38 }
  39 #endif
  40
  41 class FilterBar;
  42 class KMessageWidget;
  43 class QUrl;
  44 class KUrlNavigator;
  45 class DolphinSearchBox;
  46 class DolphinStatusBar;
  47
  48 /**
  49  * @short Represents a view for the directory content
  50  *        including the navigation bar, filter bar and status bar.
  51  *
  52  * View modes for icons, compact and details are supported. Currently
  53  * Dolphin allows to have up to two views inside the main window.
  54  *
  55  * @see DolphinView
  56  * @see FilterBar
  57  * @see KUrlNavigator
  58  * @see DolphinStatusBar
  59  */
  60 class DolphinViewContainer : public QWidget
  61 {
  62     Q_OBJECT
  63
  64 public:
  65     enum MessageType
  66     {
  67         Information,
  68         Warning,
  69         Error
  70     };
  71
  72     DolphinViewContainer(const QUrl& url, QWidget* parent);
  73     virtual ~DolphinViewContainer();
  74
  75     /**
  76      * Returns the current active URL, where all actions are applied.
  77      * The URL navigator is synchronized with this URL.
  78      */
  79     QUrl url() const;
  80
  81     /**
  82      * If \a active is true, the view container will marked as active. The active
  83      * view container is defined as view where all actions are applied to.
  84      */
  85     void setActive(bool active);
  86     bool isActive() const;
  87
  88     /**
  89      * If \a grab is set to true, the container automatically grabs the focus
  90      * as soon as the URL has been changed. Per default the grabbing
  91      * of the focus is enabled.
  92      */
  93     void setAutoGrabFocus(bool grab);
  94     bool autoGrabFocus() const;
  95
  96     const DolphinStatusBar* statusBar() const;
  97     DolphinStatusBar* statusBar();
  98
  99     const KUrlNavigator* urlNavigator() const;
 100     KUrlNavigator* urlNavigator();
 101
 102     const DolphinView* view() const;
 103     DolphinView* view();
 104
 105     /**
 106      * Shows the message \msg with the given type non-modal above
 107      * the view-content.
 108      */
 109     void showMessage(const QString& msg, MessageType type);
 110
 111     /**
 112      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
 113      */
 114     void readSettings();
 115
 116     /** Returns true, if the filter bar is visible. */
 117     bool isFilterBarVisible() const;
 118
 119     /**
 120      * Enables the search mode, if \p enabled is true. In the search mode the URL navigator
 121      * will be hidden and replaced by a line editor that allows to enter a search term.
 122      */
 123     void setSearchModeEnabled(bool enabled);
 124     bool isSearchModeEnabled() const;
 125
 126     /**
 127      * @return Text that should be used for the current URL when creating
 128      *         a new place.
 129      */
 130     QString placesText() const;
 131
 132 public slots:
 133     /**
 134      * Sets the current active URL, where all actions are applied. The
 135      * URL navigator is synchronized with this URL. The signals
 136      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 137      * are emitted.
 138      * @see DolphinViewContainer::urlNavigator()
 139      */
 140     void setUrl(const QUrl& url);
 141
 142     /**
 143      * Popups the filter bar above the status bar if \a visible is true.
 144      * It \a visible is true, it is assured that the filter bar gains
 145      * the keyboard focus.
 146      */
 147     void setFilterBarVisible(bool visible);
 148
 149 signals:
 150     /**
 151      * Is emitted whenever the filter bar has changed its visibility state.
 152      */
 153     void showFilterBarChanged(bool shown);
 154
 155     /**
 156      * Is emitted when the write state of the folder has been changed. The application
 157      * should disable all actions like "Create New..." that depend on the write
 158      * state.
 159      */
 160     void writeStateChanged(bool isFolderWritable);
 161
 162 private slots:
 163     /**
 164      * Updates the number of items (= number of files + number of
 165      * directories) in the statusbar. If files are selected, the number
 166      * of selected files and the sum of the filesize is shown. The update
 167      * is done asynchronously, as getting the sum of the
 168      * filesizes can be an expensive operation.
 169      * Unless a previous OperationCompletedMessage was set very shortly before
 170      * calling this method, it will be overwritten (see DolphinStatusBar::setMessage).
 171      * Previous ErrorMessages however are always preserved.
 172      */
 173     void delayedStatusBarUpdate();
 174
 175     /**
 176      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 177      * updates the status bar synchronously.
 178      */
 179     void updateStatusBar();
 180
 181     void updateDirectoryLoadingProgress(int percent);
 182
 183     void updateDirectorySortingProgress(int percent);
 184
 185     /**
 186      * Updates the statusbar to show an undetermined progress with the correct
 187      * context information whether a searching or a directory loading is done.
 188      */
 189     void slotDirectoryLoadingStarted();
 190
 191     /**
 192      * Assures that the viewport position is restored and updates the
 193      * statusbar to reflect the current content.
 194      */
 195     void slotDirectoryLoadingCompleted();
 196
 197     /**
 198      * Updates the statusbar to show, that the directory loading has
 199      * been canceled.
 200      */
 201     void slotDirectoryLoadingCanceled();
 202
 203     /**
 204      * Is called if the URL set by DolphinView::setUrl() represents
 205      * a file and not a directory. Takes care to activate the file.
 206      */
 207     void slotUrlIsFileError(const QUrl& url);
 208
 209     /**
 210      * Handles clicking on an item. If the item is a directory, the
 211      * directory is opened in the view. If the item is a file, the file
 212      * gets started by the corresponding application.
 213      */
 214     void slotItemActivated(const KFileItem& item);
 215
 216     /**
 217      * Handles activation of multiple files. The files get started by
 218      * the corresponding applications.
 219      */
 220     void slotItemsActivated(const KFileItemList& items);
 221
 222     /**
 223      * Shows the information for the item \a item inside the statusbar. If the
 224      * item is null, the default statusbar information is shown.
 225      */
 226     void showItemInfo(const KFileItem& item);
 227
 228     void closeFilterBar();
 229
 230     /**
 231      * Filters the currently shown items by \a nameFilter. All items
 232      * which contain the given filter string will be shown.
 233      */
 234     void setNameFilter(const QString& nameFilter);
 235
 236     /**
 237      * Marks the view container as active
 238      * (see DolphinViewContainer::setActive()).
 239      */
 240     void activate();
 241
 242     /**
 243      * Is invoked if the signal urlAboutToBeChanged() from the DolphinView
 244      * is emitted. Tries to save the view-state.
 245      */
 246     void slotViewUrlAboutToBeChanged(const QUrl& url);
 247
 248     /**
 249      * Is invoked if the signal urlAboutToBeChanged() from the URL navigator
 250      * is emitted. Tries to save the view-state.
 251      */
 252     void slotUrlNavigatorLocationAboutToBeChanged(const QUrl& url);
 253
 254     /**
 255      * Restores the current view to show \a url and assures
 256      * that the root URL of the view is respected.
 257      */
 258     void slotUrlNavigatorLocationChanged(const QUrl& url);
 259
 260     /**
 261      * Is invoked when a redirection is done and changes the
 262      * URL of the URL navigator to \a newUrl without triggering
 263      * a reloading of the directory.
 264      */
 265     void redirect(const QUrl& oldUrl, const QUrl& newUrl);
 266
 267     /** Requests the focus for the view \a m_view. */
 268     void requestFocus();
 269
 270     /**
 271      * Saves the currently used URL completion mode of
 272      * the URL navigator.
 273      */
 274     void saveUrlCompletionMode(KCompletion::CompletionMode completion);
 275
 276     void slotHistoryChanged();
 277
 278     void slotReturnPressed();
 279
 280     /**
 281      * Gets the search URL from the searchbox and starts searching.
 282      */
 283     void startSearching();
 284     void closeSearchBox();
 285
 286     /**
 287      * Stops the loading of a directory. Is connected with the "stopPressed" signal
 288      * from the statusbar.
 289      */
 290     void stopDirectoryLoading();
 291
 292     void slotStatusBarZoomLevelChanged(int zoomLevel);
 293
 294     /**
 295      * Slot that calls showMessage(msg, Error).
 296      */
 297     void showErrorMessage(const QString& msg);
 298
 299 private:
 300     /**
 301      * @return True if the URL protocol is a search URL (e. g. baloosearch:// or filenamesearch://).
 302      */
 303     bool isSearchUrl(const QUrl& url) const;
 304
 305     /**
 306      * Saves the state of the current view: contents position,
 307      * root URL, ...
 308      */
 309     void saveViewState();
 310
 311 private:
 312     QVBoxLayout* m_topLayout;
 313     KUrlNavigator* m_urlNavigator;
 314     DolphinSearchBox* m_searchBox;
 315     KMessageWidget* m_messageWidget;
 316
 317     DolphinView* m_view;
 318
 319     FilterBar* m_filterBar;
 320
 321     DolphinStatusBar* m_statusBar;
 322     QTimer* m_statusBarTimer;            // Triggers a delayed update
 323     QElapsedTimer m_statusBarTimestamp;  // Time in ms since last update
 324     bool m_autoGrabFocus;
 325
 326 #ifdef KF5Activities_FOUND
 327 private:
 328     KActivities::ResourceInstance * m_activityResourceInstance;
 329 #endif
 330 };
 331
 332 #endif // DOLPHINVIEWCONTAINER_H