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diff --git a/src/dolphinpart_ext.h b/src/dolphinpart_ext.h
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+++ b/src/dolphinpart_ext.h
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+/* This file is part of the KDE project
+ * Copyright (c) 2012 Dawit Alemayehu <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef DOLPHINPART_EXT_H
+#define DOLPHINPART_EXT_H
+
+
+#include <kparts/listingextension.h>
+
+class DolphinPart;
+
+class DolphinPartListingFilterExtension : public KParts::ListingFilterExtension
+{
+    Q_OBJECT
+
+public:
+    DolphinPartListingFilterExtension(DolphinPart* part);
+    virtual FilterModes supportedFilterModes() const;
+    virtual bool supportsMultipleFilters(FilterMode mode) const;
+    virtual QVariant filter(FilterMode mode) const;
+    virtual void setFilter(FilterMode mode, const QVariant& filter);
+
+private:
+    DolphinPart* m_part;
+};
+
+class DolphinPartListingNotificationExtension : public KParts::ListingNotificationExtension
+{
+    Q_OBJECT
+
+public:
+    DolphinPartListingNotificationExtension(DolphinPart* part);
+    virtual NotificationEventTypes supportedNotificationEventTypes() const;
+
+public Q_SLOTS:
+    void slotNewItems(const KFileItemList&);
+    void slotItemsDeleted(const KFileItemList&);
+};
+
+#endif