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+/*
+    Copyright (C) 2005-2009  Michel de Boer <michel@twinklephone.com>
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/**
+ * @file
+ * Presence Event Publication Agent (EPA) [RFC 3903]
+ */
+
+#ifndef _PRESENCE_EPA_H
+#define _PRESENCE_EPA_H
+
+#include <string>
+
+#include "epa.h"
+#include "presence_state.h"
+#include "patterns/observer.h"
+
+using namespace std;
+
+/** Presence Event Publication Agent (EPA) [RFC 3903] */
+class t_presence_epa : public t_epa, public patterns::t_subject {
+private:
+	/** Basic presence state. */
+	t_presence_state::t_basic_state	basic_state;
+	
+	/** Tuple id to be put in the PIDF documents. */
+	string tuple_id;
+	
+public:
+	/** Constructor */
+	t_presence_epa(t_phone_user *pu);
+
+	/** @name Getters */
+	//@{
+	t_presence_state::t_basic_state get_basic_state(void) const;
+	//@}
+	
+	virtual bool recv_response(t_response *r, t_tuid tuid, t_tid tid);
+
+	/**
+	 * Publish presence state.
+	 * @param _basic_state [in] The basic presence state.
+	 * @pre _basic_state must be one of the following values:
+	 * - @ref ST_BASIC_CLOSED
+	 * - @ref ST_BASIC_OPEN
+	 */
+	void publish_presence(t_presence_state::t_basic_state _basic_state);
+	
+	virtual void clear(void);
+};
+
+#endif