1 /* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_LIBJINGLE_XMPP_PUBSUB_TASK_H_ 12 #define WEBRTC_LIBJINGLE_XMPP_PUBSUB_TASK_H_ 13 14 #include <map> 15 #include <string> 16 #include "webrtc/libjingle/xmllite/xmlelement.h" 17 #include "webrtc/libjingle/xmpp/jid.h" 18 #include "webrtc/libjingle/xmpp/xmpptask.h" 19 20 namespace buzz { 21 22 // Base class to help write pubsub tasks. 23 // In ProcessStart call SubscribeNode with namespaces of interest along with 24 // NodeHandlers. 25 // When pubsub notifications arrive and matches the namespace, the NodeHandlers 26 // will be called back. 27 class PubsubTask : public buzz::XmppTask { 28 public: 29 virtual ~PubsubTask(); 30 31 protected: 32 typedef void (PubsubTask::*NodeHandler)(const buzz::XmlElement* node); 33 34 PubsubTask(XmppTaskParentInterface* parent, const buzz::Jid& pubsub_node_jid); 35 36 virtual bool HandleStanza(const buzz::XmlElement* stanza); 37 virtual int ProcessResponse(); 38 39 bool SubscribeToNode(const std::string& pubsub_node, NodeHandler handler); 40 void UnsubscribeFromNode(const std::string& pubsub_node); 41 42 // Called when there is an error. Derived class can do what it needs to. 43 virtual void OnPubsubError(const buzz::XmlElement* error_stanza); 44 45 private: 46 typedef std::map<std::string, NodeHandler> NodeSubscriptions; 47 48 void HandlePubsubIqGetResponse(const buzz::XmlElement* pubsub_iq_response); 49 void HandlePubsubEventMessage(const buzz::XmlElement* pubsub_event_message); 50 void HandlePubsubItems(const buzz::XmlElement* items); 51 52 buzz::Jid pubsub_node_jid_; 53 NodeSubscriptions subscribed_nodes_; 54 }; 55 56 } // namespace buzz 57 58 #endif // WEBRTC_LIBJINGLE_XMPP_PUBSUB_TASK_H_ 59