apps/dolphin/src/viewproperties.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (<peter.penz@gmx.at>)                *
   3  *   Copyright (C) 2006 by Aaron J. Seigo (<aseigo@kde.org>)               *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #ifndef VIEWPROPERTIES_H
  22 #define VIEWPROPERTIES_H
  23
  24 #include <dolphinview.h>
  25 #include <kurl.h>
  26 #include <libdolphin_export.h>
  27
  28 class ViewPropertySettings;
  29 /**
  30  * @brief Maintains the view properties like 'view mode' or
  31  *        'show hidden files' for a directory.
  32  *
  33  * The view properties are automatically stored as part of the file
  34  * .directory inside the corresponding path. To read out the view properties
  35  * just construct an instance by passing the path of the directory:
  36  *
  37  * \code
  38  * ViewProperties props(KUrl("/home/peter/Documents"));
  39  * const DolphinView::Mode mode = props.viewMode();
  40  * const bool showHiddenFiles = props.isShowHiddenFilesEnabled();
  41  * \endcode
  42  *
  43  * When modifying a view property, the '.directory' file is automatically updated
  44  * inside the destructor.
  45  *
  46  * If no .directory file is available or the global view mode is turned on
  47  * (see GeneralSettings::globalViewMode()), the values from the global .directory file
  48  * are used for initialization.
  49  */
  50 class LIBDOLPHINPRIVATE_EXPORT ViewProperties
  51 {
  52 public:
  53     explicit ViewProperties(const KUrl& url);
  54     virtual ~ViewProperties();
  55
  56     void setViewMode(DolphinView::Mode mode);
  57     DolphinView::Mode viewMode() const;
  58
  59     void setShowPreview(bool show);
  60     bool showPreview() const;
  61
  62     void setShowHiddenFiles(bool show);
  63     bool showHiddenFiles() const;
  64
  65     void setCategorizedSorting(bool categorized);
  66     bool categorizedSorting() const;
  67
  68     void setSorting(DolphinView::Sorting sorting);
  69     DolphinView::Sorting sorting() const;
  70
  71     void setSortOrder(Qt::SortOrder sortOrder);
  72     Qt::SortOrder sortOrder() const;
  73
  74     /**
  75      * Sets the additional information for the current set view-mode.
  76      * Note that the additional-info property is the only property where
  77      * the value is dependent from another property (in this case the view-mode).
  78      */
  79     void setAdditionalInfo(KFileItemDelegate::InformationList info);
  80
  81     /**
  82      * Returns the additional information for the current set view-mode.
  83      * Note that the additional-info property is the only property where
  84      * the value is dependent from another property (in this case the view-mode).
  85      */
  86     KFileItemDelegate::InformationList additionalInfo() const;
  87
  88     /**
  89      * Sets the directory properties view mode, show preview,
  90      * show hidden files, sorting and sort order like
  91      * set in \a props.
  92      */
  93     void setDirProperties(const ViewProperties& props);
  94
  95     /**
  96      * If \a autoSave is true, the properties are automatically
  97      * saved when the destructor is called. Per default autosaving
  98      * is enabled.
  99      */
 100     void setAutoSaveEnabled(bool autoSave);
 101     bool isAutoSaveEnabled() const;
 102
 103     void updateTimeStamp();
 104
 105     /**
 106      * Saves the view properties for the directory specified
 107      * in the constructor. The method is automatically
 108      * invoked in the destructor, if
 109      * ViewProperties::isAutoSaveEnabled() returns true and
 110      * at least one property has been changed.
 111      */
 112     void save();
 113
 114     /**
 115      * Returns the URL of the directory, where the mirrored view properties
 116      * are stored into. Mirrored view properties are used if:
 117      * - there is no write access for storing the view properties into
 118      *   the original directory
 119      * - for non local directories
 120      */
 121     static KUrl mirroredDirectory();
 122
 123 private:
 124     /**
 125      * Returns the destination directory path where the view
 126      * properties are stored. \a subDir specifies the used sub
 127      * directory.
 128      */
 129     QString destinationDir(const QString& subDir) const;
 130
 131     /**
 132      * Returns the encoded additional information that can be stored
 133      * in the .directory file. See ViewProperties::decodedAdditionalInfo()
 134      * for the coding format.
 135      * @param info   Additional information for the current view mode.
 136      */
 137     int encodedAdditionalInfo(int info) const;
 138
 139     /**
 140      * Returns the decoded additional information from the .directory
 141      * file by respecting the current set view mode. The additional
 142      * information from the .directory file is an integer value, where:
 143      * - Byte 0 stores the additional info for the details view
 144      * - Byte 1 stores the additional info for the icons view
 145      * - Byte 2 stores the additional info for the column view
 146      * The additional information property is the only property that is
 147      * dependent from another property (in this case the view-mode).
 148      */
 149     int decodedAdditionalInfo() const;
 150
 151     Q_DISABLE_COPY(ViewProperties)
 152
 153 private:
 154     enum AdditionalInfoValues
 155     {
 156         NoInfo   = 0,
 157         SizeInfo = 1,
 158         DateInfo = 2,
 159         PermissionsInfo = 4,
 160         OwnerInfo = 8,
 161         GroupInfo = 16,
 162         TypeInfo = 32
 163     };
 164
 165     bool m_changedProps;
 166     bool m_autoSave;
 167     QString m_filepath;
 168     ViewPropertySettings* m_node;
 169
 170     static bool m_nepomukSupport;
 171 };
 172
 173 #endif