gwenview/lib/semanticinfo/semanticinfodirmodel.h

   1 // vim: set tabstop=4 shiftwidth=4 noexpandtab:
   2 /*
   3 Gwenview: an image viewer
   4 Copyright 2008 Aurélien Gâteau <aurelien.gateau@free.fr>
   5
   6 This program is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA.
  19
  20 */
  21 #ifndef SEMANTICINFODIRMODEL_H
  22 #define SEMANTICINFODIRMODEL_H
  23
  24 // Qt
  25
  26 // KDE
  27 #include <kdirmodel.h>
  28
  29 // Local
  30
  31 class KUrl;
  32
  33 namespace Gwenview {
  34
  35
  36 class AbstractSemanticInfoBackEnd;
  37 class SemanticInfo;
  38 class SemanticInfoDirModelPrivate;
  39 /**
  40  * Extends KDirModel by providing read/write access to image metadata such as
  41  * rating, tags and descriptions.
  42  */
  43 class SemanticInfoDirModel : public KDirModel {
  44         Q_OBJECT
  45 public:
  46         enum {
  47                 RatingRole = 0x21a43a51,
  48                 DescriptionRole = 0x26FB33FA,
  49                 TagsRole = 0x0462F0A8
  50         };
  51         SemanticInfoDirModel(QObject* parent);
  52         ~SemanticInfoDirModel();
  53
  54         void clearSemanticInfoCache();
  55
  56         bool semanticInfoAvailableForIndex(const QModelIndex&) const;
  57
  58         void retrieveSemanticInfoForIndex(const QModelIndex&);
  59
  60         SemanticInfo semanticInfoForIndex(const QModelIndex&) const;
  61
  62         virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const;
  63
  64         bool setData(const QModelIndex& index, const QVariant& data, int role = Qt::EditRole);
  65
  66         AbstractSemanticInfoBackEnd* semanticInfoBackEnd() const;
  67
  68 Q_SIGNALS:
  69         void semanticInfoRetrieved(const KUrl&, const SemanticInfo&);
  70
  71 private:
  72         SemanticInfoDirModelPrivate* const d;
  73
  74 private Q_SLOTS:
  75         void slotSemanticInfoRetrieved(const KUrl& url, const SemanticInfo&);
  76
  77         void slotRowsAboutToBeRemoved(const QModelIndex&, int, int);
  78         void slotModelAboutToBeReset();
  79 };
  80
  81
  82 } // namespace
  83
  84 #endif /* SEMANTICINFODIRMODEL_H */