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diff --git a/src/kitemviews/private/kbaloorolesprovider.h b/src/kitemviews/private/kbaloorolesprovider.h
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+++ b/src/kitemviews/private/kbaloorolesprovider.h
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+/***************************************************************************
+ *   Copyright (C) 2012 by Peter Penz <[email protected]>             *
+ *   Copyright (C) 2013 by Vishesh Handa <[email protected]>                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#ifndef KBALOO_ROLESPROVIDER_H
+#define KBALOO_ROLESPROVIDER_H
+
+#include <libdolphin_export.h>
+
+#include <QHash>
+#include <QSet>
+#include <QUrl>
+
+namespace Baloo {
+    class File;
+}
+
+/**
+ * @brief Allows accessing metadata of a file by providing KFileItemModel roles.
+ *
+ * Is a helper class for KFileItemModelRolesUpdater to retrieve roles that
+ * are only accessible with Baloo.
+ */
+class LIBDOLPHINPRIVATE_EXPORT KBalooRolesProvider
+{
+public:
+    static KBalooRolesProvider& instance();
+    virtual ~KBalooRolesProvider();
+
+    /**
+     * @return Roles that can be provided by KBalooRolesProvider.
+     */
+    QSet<QByteArray> roles() const;
+
+    /**
+     * @return Values for the roles \a roles that can be determined from the file
+     *         with the URL \a url.
+     */
+    QHash<QByteArray, QVariant> roleValues(const Baloo::File& file,
+                                           const QSet<QByteArray>& roles) const;
+
+    QByteArray roleForProperty(const QString& property) const;
+
+protected:
+    KBalooRolesProvider();
+
+private:
+    /**
+     * @return User visible string for the given tag-values.
+     */
+    QString tagsFromValues(const QStringList& values) const;
+
+    /**
+     * @return User visible string for the EXIF-orientation property
+     *         which can have the values 0 to 8.
+     *         (see http://sylvana.net/jpegcrop/exif_orientation.html)
+     */
+    QString orientationFromValue(int value) const;
+
+    /**
+     * @return Duration in the format HH::MM::SS for the value given
+     *         in seconds.
+     */
+    QString durationFromValue(int value) const;
+
+private:
+    QSet<QByteArray> m_roles;
+    QHash<QString, QByteArray> m_roleForProperty;
+
+    friend class KBalooRolesProviderSingleton;
+};
+
+#endif
+