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using Gee;
using Xmpp.Core;
namespace Xmpp.Xep.ChatStateNotifications {
private const string NS_URI = "http://jabber.org/protocol/chatstates";
public const string STATE_ACTIVE = "active";
public const string STATE_INACTIVE = "inactive";
public const string STATE_GONE = "gone";
public const string STATE_COMPOSING = "composing";
public const string STATE_PAUSED = "paused";
private const string[] STATES = {STATE_ACTIVE, STATE_INACTIVE, STATE_GONE, STATE_COMPOSING, STATE_PAUSED};
public class Module : XmppStreamModule {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0085_chat_state_notifications");
public signal void chat_state_received(XmppStream stream, string jid, string state);
/**
* "A message stanza that does not contain standard messaging content [...] SHOULD be a state other than <active/>" (0085, 5.6)
*/
public void send_state(XmppStream stream, string jid, string state) {
Message.Stanza message = new Message.Stanza();
message.to = jid;
message.type_ = Message.Stanza.TYPE_CHAT;
message.stanza.put_node(new StanzaNode.build(state, NS_URI).add_self_xmlns());
stream.get_module(Message.Module.IDENTITY).send_message(stream, message);
}
public override void attach(XmppStream stream) {
ServiceDiscovery.Module.require(stream);
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
stream.get_module(Message.Module.IDENTITY).pre_send_message.connect(on_pre_send_message);
stream.get_module(Message.Module.IDENTITY).received_message.connect(on_received_message);
}
public override void detach(XmppStream stream) {
stream.get_module(Message.Module.IDENTITY).pre_send_message.disconnect(on_pre_send_message);
stream.get_module(Message.Module.IDENTITY).received_message.disconnect(on_received_message);
}
public static void require(XmppStream stream) {
if (stream.get_module(IDENTITY) == null) stream.add_module(new Module()); ;
}
public override string get_ns() { return NS_URI; }
public override string get_id() { return IDENTITY.id; }
private void on_pre_send_message(XmppStream stream, Message.Stanza message) {
if (message.body == null) return;
if (message.type_ != Message.Stanza.TYPE_CHAT) return;
message.stanza.put_node(new StanzaNode.build(STATE_ACTIVE, NS_URI).add_self_xmlns());
}
private void on_received_message(XmppStream stream, Message.Stanza message) {
if (!message.is_error()) {
Gee.List<StanzaNode> nodes = message.stanza.get_all_subnodes();
foreach (StanzaNode node in nodes) {
if (node.ns_uri == NS_URI &&
node.name in STATES) {
chat_state_received(stream, message.from, node.name);
}
}
}
}
}
}
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