src/dolphinviewcontainer.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Peter Penz <peter.penz@gmx.at>                  *
   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
  21 #ifndef DOLPHINVIEWCONTAINER_H
  22 #define DOLPHINVIEWCONTAINER_H
  23
  24 #include <kfileitem.h>
  25 #include <kfileitemdelegate.h>
  26 #include <kglobalsettings.h>
  27 #include <kio/job.h>
  28
  29 #include <kurlnavigator.h>
  30
  31 #include <QElapsedTimer>
  32 #include <QWidget>
  33
  34 #include <views/dolphinview.h>
  35
  36 class FilterBar;
  37 class KUrl;
  38 class DolphinModel;
  39 class KUrlNavigator;
  40 class DolphinDirLister;
  41 class DolphinSearchBox;
  42 class DolphinSortFilterProxyModel;
  43 class DolphinStatusBar;
  44
  45 /**
  46  * @short Represents a view for the directory content
  47  *        including the navigation bar, filter bar and status bar.
  48  *
  49  * View modes for icons, details and columns are supported. Currently
  50  * Dolphin allows to have up to two views inside the main window.
  51  *
  52  * @see DolphinView
  53  * @see FilterBar
  54  * @see KUrlNavigator
  55  * @see DolphinStatusBar
  56  */
  57 class DolphinViewContainer : public QWidget
  58 {
  59     Q_OBJECT
  60
  61 public:
  62     DolphinViewContainer(const KUrl& url, QWidget* parent);
  63     virtual ~DolphinViewContainer();
  64
  65     /**
  66      * Returns the current active URL, where all actions are applied.
  67      * The URL navigator is synchronized with this URL.
  68      */
  69     KUrl url() const;
  70
  71     /**
  72      * If \a active is true, the view container will marked as active. The active
  73      * view container is defined as view where all actions are applied to.
  74      */
  75     void setActive(bool active);
  76     bool isActive() const;
  77
  78     const DolphinStatusBar* statusBar() const;
  79     DolphinStatusBar* statusBar();
  80
  81     const KUrlNavigator* urlNavigator() const;
  82     KUrlNavigator* urlNavigator();
  83
  84     const DolphinView* view() const;
  85     DolphinView* view();
  86
  87     /**
  88      * Refreshes the view container to get synchronized with the (updated) Dolphin settings.
  89      */
  90     void refresh();
  91
  92     /** Returns true, if the filter bar is visible. */
  93     bool isFilterBarVisible() const;
  94
  95     /**
  96      * Enables the search mode, if \p enabled is true. In the search mode the URL navigator
  97      * will be hidden and replaced by a line editor that allows to enter a search term.
  98      */
  99     void setSearchModeEnabled(bool enabled);
 100     bool isSearchModeEnabled() const;
 101
 102 public slots:
 103     /**
 104      * Sets the current active URL, where all actions are applied. The
 105      * URL navigator is synchronized with this URL. The signals
 106      * KUrlNavigator::urlChanged() and KUrlNavigator::historyChanged()
 107      * are emitted.
 108      * @see DolphinViewContainer::urlNavigator()
 109      */
 110     void setUrl(const KUrl& url);
 111
 112     /**
 113      * Popups the filter bar above the status bar if \a visible is true.
 114      */
 115     void setFilterBarVisible(bool visible);
 116
 117 signals:
 118     /**
 119      * Is emitted whenever the filter bar has changed its visibility state.
 120      */
 121     void showFilterBarChanged(bool shown);
 122
 123     /**
 124      * Is emitted when the write state of the folder has been changed. The application
 125      * should disable all actions like "Create New..." that depend on the write
 126      * state.
 127      */
 128     void writeStateChanged(bool isFolderWritable);
 129
 130     /**
 131      * Is emitted if the search mode has been enabled or disabled.
 132      * (see DolphinViewContainer::setSearchModeEnabled() and
 133      * DolphinViewContainer::isSearchModeEnabled())
 134      */
 135     void searchModeChanged(bool enabled);
 136
 137 private slots:
 138     /**
 139      * Updates the number of items (= number of files + number of
 140      * directories) in the statusbar. If files are selected, the number
 141      * of selected files and the sum of the filesize is shown. The update
 142      * is done asynchronously, as getting the sum of the
 143      * filesizes can be an expensive operation.
 144      */
 145     void delayedStatusBarUpdate();
 146
 147     /**
 148      * Is invoked by DolphinViewContainer::delayedStatusBarUpdate() and
 149      * updates the status bar synchronously.
 150      */
 151     void updateStatusBar();
 152
 153     void initializeProgress();
 154
 155     void updateProgress(int percent);
 156
 157     /**
 158      * Assures that the viewport position is restored and updates the
 159      * statusbar to reflect the current content.
 160      */
 161     void slotDirListerCompleted();
 162
 163     /**
 164      * Handles clicking on an item. If the item is a directory, the
 165      * directory is opened in the view. If the item is a file, the file
 166      * gets started by the corresponding application.
 167      */
 168     void slotItemTriggered(const KFileItem& item);
 169
 170     /**
 171      * Opens a the file \a url by opening the corresponding application.
 172      * Is connected with the signal urlIsFile() from DolphinDirLister and will
 173      * get invoked if the user manually has entered a file into the URL navigator.
 174      */
 175     void openFile(const KUrl& url);
 176
 177     /**
 178      * Shows the information for the item \a item inside the statusbar. If the
 179      * item is null, the default statusbar information is shown.
 180      */
 181     void showItemInfo(const KFileItem& item);
 182
 183     /** Shows the information \a msg inside the statusbar. */
 184     void showInfoMessage(const QString& msg);
 185
 186     /** Shows the error message \a msg inside the statusbar. */
 187     void showErrorMessage(const QString& msg);
 188
 189     /** Shows the "operation completed" message \a msg inside the statusbar. */
 190     void showOperationCompletedMessage(const QString& msg);
 191
 192     void closeFilterBar();
 193
 194     /**
 195      * Filters the currently shown items by \a nameFilter. All items
 196      * which contain the given filter string will be shown.
 197      */
 198     void setNameFilter(const QString& nameFilter);
 199
 200     /**
 201      * Marks the view container as active
 202      * (see DolphinViewContainer::setActive()).
 203      */
 204     void activate();
 205
 206     /**
 207      * Saves the state of the current view: contents position,
 208      * root URL, ...
 209      */
 210     void saveViewState();
 211
 212     /**
 213      * Restores the current view to show \a url and assures
 214      * that the root URL of the view is respected.
 215      */
 216     void slotUrlNavigatorLocationChanged(const KUrl& url);
 217
 218     /**
 219      * Is connected with the URL navigator and drops the URLs
 220      * above the destination \a destination.
 221      */
 222     void dropUrls(const KUrl& destination, QDropEvent* event);
 223
 224     /**
 225      * Is invoked when a redirection is done and changes the
 226      * URL of the URL navigator to \a newUrl without triggering
 227      * a reloading of the directory.
 228      */
 229     void redirect(const KUrl& oldUrl, const KUrl& newUrl);
 230
 231     /** Requests the focus for the view \a m_view. */
 232     void requestFocus();
 233
 234     /**
 235      * Saves the currently used URL completion mode of
 236      * the URL navigator.
 237      */
 238     void saveUrlCompletionMode(KGlobalSettings::Completion completion);
 239
 240     void slotHistoryChanged();
 241
 242     /**
 243      * Gets the search URL from the searchbox and starts searching.
 244      * @param text Text the user has entered into the searchbox.
 245      */
 246     void startSearching(const QString& text);
 247     void closeSearchBox();
 248
 249 private:
 250     /**
 251      * @return True if the URL protocol is a search URL (e. g. nepomuksearch:// or filenamesearch://).
 252      */
 253     bool isSearchUrl(const KUrl& url) const;
 254
 255 private:
 256     bool m_isFolderWritable;
 257
 258     QVBoxLayout* m_topLayout;
 259     KUrlNavigator* m_urlNavigator;
 260     DolphinSearchBox* m_searchBox;
 261
 262     DolphinView* m_view;
 263
 264     FilterBar* m_filterBar;
 265
 266     DolphinStatusBar* m_statusBar;
 267     QTimer* m_statusBarTimer;            // Triggers a delayed update
 268     QElapsedTimer m_statusBarTimestamp;  // Time in ms since last update
 269
 270     DolphinModel* m_dolphinModel;
 271     DolphinDirLister* m_dirLister;
 272     DolphinSortFilterProxyModel* m_proxyModel;
 273 };
 274
 275 inline const DolphinStatusBar* DolphinViewContainer::statusBar() const
 276 {
 277     return m_statusBar;
 278 }
 279
 280 inline DolphinStatusBar* DolphinViewContainer::statusBar()
 281 {
 282     return m_statusBar;
 283 }
 284
 285 inline const KUrlNavigator* DolphinViewContainer::urlNavigator() const
 286 {
 287     return m_urlNavigator;
 288 }
 289
 290 inline KUrlNavigator* DolphinViewContainer::urlNavigator()
 291 {
 292     return m_urlNavigator;
 293 }
 294
 295 inline const DolphinView* DolphinViewContainer::view() const
 296 {
 297     return m_view;
 298 }
 299
 300 inline DolphinView* DolphinViewContainer::view()
 301 {
 302     return m_view;
 303 }
 304
 305 #endif // DOLPHINVIEWCONTAINER_H