///<summary>
/// Removes the publish-subscribe node from the manager and sends a delete
/// node to the XMPP server.
///</summary>
/// <param name="service">
/// Component that handles PubSub requests.
/// </param>
/// <param name="node">
/// The node on the component that the client wants to interact with.
/// </param>
/// <param name="errorHandler">
/// Callback for any errors with the publish-subscribe node deletion.
/// </param>
public void RemoveNode(JID service, string node, bedrock.ExceptionHandler errorHandler)
{
JIDNode jn = new JIDNode(service, node);
PubSubNode psNode = null;
if (m_nodes.TryGetValue(jn, out psNode))
{
m_nodes.Remove(jn);
}
else
{
psNode = new PubSubNode(Stream, service, node, 10);
}
psNode.OnError += errorHandler;
psNode.Delete();
}
private void m_stream_OnProtocol(object sender, XmlElement rp)
{
Message msg = rp as Message;
if (msg == null)
return;
PubSubEvent evt = msg["event", URI.PUBSUB_EVENT] as PubSubEvent;
if (evt == null)
return;
EventItems items = evt.GetChildElement<EventItems>();
if (items == null)
return;
string node = items.Node;
JID from = msg.From.BareJID;
JIDNode jn = new JIDNode(from, node);
PubSubNode psn = null;
if (!m_nodes.TryGetValue(jn, out psn))
{
CBHolder holder = null;
if (!m_callbacks.TryGetValue(node, out holder))
{
Console.WriteLine("WARNING: notification received for unknown pubsub node");
return;
}
psn = new PubSubNode(m_stream, from, node, holder.Max);
psn.OnItemAdd += holder.FireAdd;
psn.OnItemRemove += holder.FireRemove;
m_nodes[jn] = psn;
}
psn.FireItems(items);
}
/// <summary>
/// Subscribes to a publish-subscribe node.
/// </summary>
/// <param name="service">Component that handles PubSub requests.</param>
/// <param name="node">The node on the component that the client wants to interact with.</param>
/// <param name="maxItems">Maximum number of items to retain. First one to call Subscribe gets their value, for now.</param>
/// <returns>
/// The existing node will be returned if there is already a subscription.
/// If the node does not exist, the PubSubNode object will be returned
/// in a subscribing state.
/// </returns>
public PubSubNode GetNode(JID service, string node, int maxItems)
{
JIDNode jn = new JIDNode(service, node);
PubSubNode n = null;
if (m_nodes.TryGetValue(jn, out n))
return n;
n = new PubSubNode(Stream, service, node, maxItems);
m_nodes[jn] = n;
n.OnError += OnError;
return n;
}