Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/pubsubtasks.h

Index: webrtc/libjingle/xmpp/pubsubtasks.h
diff --git a/webrtc/libjingle/xmpp/pubsubtasks.h b/webrtc/libjingle/xmpp/pubsubtasks.h
new file mode 100644
index 0000000000000000000000000000000000000000..2f56fa87cc4bd4a10520ab6fa6736bc9eafe9471
--- /dev/null
+++ b/webrtc/libjingle/xmpp/pubsubtasks.h
@@ -0,0 +1,114 @@
+/*
+ *  Copyright 2011 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 WEBRTC_LIBJINGLE_XMPP_PUBSUBTASKS_H_
+#define WEBRTC_LIBJINGLE_XMPP_PUBSUBTASKS_H_
+
+#include <vector>
+
+#include "webrtc/libjingle/xmpp/iqtask.h"
+#include "webrtc/libjingle/xmpp/receivetask.h"
+#include "webrtc/base/sigslot.h"
+
+namespace buzz {
+
+// A PubSub itemid + payload.  Useful for signaling items.
+struct PubSubItem {
+  std::string itemid;
+  // The entire <item>, owned by the stanza handler.  To keep a
+  // reference after handling, make a copy.
+  const XmlElement* elem;
+};
+
+// An IqTask which gets a <pubsub><items> for a particular jid and
+// node, parses the items in the response and signals the items.
+class PubSubRequestTask : public IqTask {
+ public:
+  PubSubRequestTask(XmppTaskParentInterface* parent,
+                    const Jid& pubsubjid,
+                    const std::string& node);
+
+  sigslot::signal2<PubSubRequestTask*,
+                   const std::vector<PubSubItem>&> SignalResult;
+  // SignalError inherited by IqTask.
+ private:
+  virtual void HandleResult(const XmlElement* stanza);
+};
+
+// A ReceiveTask which listens for <event><items> of a particular
+// pubsub JID and node and then signals them items.
+class PubSubReceiveTask : public ReceiveTask {
+ public:
+  PubSubReceiveTask(XmppTaskParentInterface* parent,
+                    const Jid& pubsubjid,
+                    const std::string& node)
+      : ReceiveTask(parent),
+        pubsubjid_(pubsubjid),
+        node_(node) {
+  }
+
+  virtual int ProcessStart();
+  sigslot::signal2<PubSubReceiveTask*,
+                   const std::vector<PubSubItem>&> SignalUpdate;
+
+ protected:
+  virtual bool WantsStanza(const XmlElement* stanza);
+  virtual void ReceiveStanza(const XmlElement* stanza);
+
+ private:
+  Jid pubsubjid_;
+  std::string node_;
+};
+
+// An IqTask which publishes a <pubsub><publish><item> to a particular
+// pubsub jid and node.
+class PubSubPublishTask : public IqTask {
+ public:
+  // Takes ownership of children
+  PubSubPublishTask(XmppTaskParentInterface* parent,
+                    const Jid& pubsubjid,
+                    const std::string& node,
+                    const std::string& itemid,
+                    const std::vector<XmlElement*>& children);
+
+  const std::string& itemid() const { return itemid_; }
+
+  sigslot::signal1<PubSubPublishTask*> SignalResult;
+
+ private:
+  // SignalError inherited by IqTask.
+  virtual void HandleResult(const XmlElement* stanza);
+
+  std::string itemid_;
+};
+
+// An IqTask which publishes a <pubsub><publish><retract> to a particular
+// pubsub jid and node.
+class PubSubRetractTask : public IqTask {
+ public:
+  PubSubRetractTask(XmppTaskParentInterface* parent,
+                    const Jid& pubsubjid,
+                    const std::string& node,
+                    const std::string& itemid);
+
+  const std::string& itemid() const { return itemid_; }
+
+  sigslot::signal1<PubSubRetractTask*> SignalResult;
+
+ private:
+  // SignalError inherited by IqTask.
+  virtual void HandleResult(const XmlElement* stanza);
+
+  std::string itemid_;
+};
+
+}  // namespace buzz
+
+#endif  // WEBRTC_LIBJINGLE_XMPP_PUBSUBTASKS_H_