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 IDENTITY = new ModuleIdentity(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 " (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 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); } } } } } }