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diff --git a/src/revisioncontrolplugin.h b/src/revisioncontrolplugin.h
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+/***************************************************************************
+ *   Copyright (C) 2009 by Peter Penz <[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 REVISIONCONTROLPLUGIN_H
+#define REVISIONCONTROLPLUGIN_H
+
+#include <libdolphin_export.h>
+
+#include <QString>
+
+/**
+ * @brief Base class for revision control plugins.
+ *
+ * Enables the file manager to show the revision state
+ * of a revisioned file.
+ */
+class LIBDOLPHINPRIVATE_EXPORT RevisionControlPlugin
+{
+public:
+    enum RevisionState
+    {
+        LocalRevision,
+        LatestRevision
+        // TODO...
+    };
+
+    RevisionControlPlugin();
+    virtual ~RevisionControlPlugin();
+
+    /**
+     * Returns the name of the file which stores
+     * the revision control informations.
+     * (e. g. .svn, .cvs, .git).
+     */
+    virtual QString fileName() const = 0;
+
+    /**
+     * Is invoked whenever the revision control
+     * information will get retrieved for the directory
+     * \p directory. It is assured that the directory
+     * contains a trailing slash.
+     */
+    virtual bool beginRetrieval(const QString& directory) = 0;
+
+    /**
+     * Is invoked after the revision control information has been
+     * received. It is assured that
+     * RevisionControlPlugin::beginInfoRetrieval() has been
+     * invoked before.
+     */
+    virtual void endRetrieval() = 0;
+
+    /**
+     * Returns the revision state for the file with the name \p fileName.
+     * It is assured that RevisionControlPlugin::beginInfoRetrieval() has been
+     * invoked before and that the file is part of the directory specified
+     * in beginInfoRetrieval().
+     */
+    virtual RevisionState revisionState(const QString& fileName) = 0;
+
+};
+
+
+
+
+// TODO: This is just a temporary test class. It will be made available as
+// plugin outside Dolphin later.
+
+#include <QFileInfoList>
+#include <QHash>
+
+class LIBDOLPHINPRIVATE_EXPORT SubversionPlugin : public RevisionControlPlugin
+{
+public:
+    SubversionPlugin();
+    virtual ~SubversionPlugin();
+    virtual QString fileName() const;
+    virtual bool beginRetrieval(const QString& directory);
+    virtual void endRetrieval();
+    virtual RevisionControlPlugin::RevisionState revisionState(const QString& fileName);
+
+private:
+    QString m_directory;
+    QHash<QString, QFileInfo> m_fileInfoHash;
+};
+#endif // REVISIONCONTROLPLUGIN_H
+