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+/*
+ * Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef THIRD_PARTY_LIBJINGLE_FILES_WEBRTC_LIBJINGLE_XMPP_PRESENCERECEIVETASK_H_
+#define THIRD_PARTY_LIBJINGLE_FILES_WEBRTC_LIBJINGLE_XMPP_PRESENCERECEIVETASK_H_
+
+#include "webrtc/base/sigslot.h"
+
+#include "webrtc/libjingle/xmpp/presencestatus.h"
+#include "webrtc/libjingle/xmpp/xmpptask.h"
+
+namespace buzz {
+
+// A task to receive presence status callbacks from the XMPP server.
+class PresenceReceiveTask : public XmppTask {
+ public:
+ // Arguments:
+ // parent a reference to task interface associated withe the XMPP client.
+ explicit PresenceReceiveTask(XmppTaskParentInterface* parent);
+
+ // Shuts down the thread associated with this task.
+ virtual ~PresenceReceiveTask();
+
+ // Starts pulling queued status messages and dispatching them to the
+ // PresenceUpdate() callback.
+ virtual int ProcessStart();
+
+ // Slot for presence message callbacks
+ sigslot::signal1<const PresenceStatus&> PresenceUpdate;
+
+ protected:
+ // Called by the XMPP engine when presence stanzas are received from the
+ // server.
+ virtual bool HandleStanza(const XmlElement * stanza);
+
+ private:
+ // Handles presence stanzas by converting the data to PresenceStatus
+ // objects and passing those along to the SignalStatusUpadate() callback.
+ void HandlePresence(const Jid& from, const XmlElement * stanza);
+
+ // Extracts presence information for the presence stanza sent form the
+ // server.
+ static void DecodeStatus(const Jid& from, const XmlElement * stanza,
+ PresenceStatus* status);
+};
+
+} // namespace buzz
+
+#endif // THIRD_PARTY_LIBJINGLE_FILES_WEBRTC_LIBJINGLE_XMPP_PRESENCERECEIVETASK_H_