using Gee; 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, Jid jid, string state, MessageStanza stanza); private SendPipelineListener send_pipeline_listener = new SendPipelineListener(); /** * "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, Jid jid, string message_type, string state) { MessageStanza message = new MessageStanza() { to=jid, type_=message_type }; message.stanza.put_node(new StanzaNode.build(state, NS_URI).add_self_xmlns()); MessageProcessingHints.set_message_hint(message, MessageProcessingHints.HINT_NO_STORE); stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, message); } public override void attach(XmppStream stream) { stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI); stream.get_module(MessageModule.IDENTITY).send_pipeline.connect(send_pipeline_listener); stream.get_module(MessageModule.IDENTITY).received_message.connect(on_received_message); } public override void detach(XmppStream stream) { stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI); stream.get_module(MessageModule.IDENTITY).received_message.disconnect(on_received_message); stream.get_module(MessageModule.IDENTITY).send_pipeline.disconnect(send_pipeline_listener); } public override string get_ns() { return NS_URI; } public override string get_id() { return IDENTITY.id; } private void on_received_message(XmppStream stream, MessageStanza 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, message); } } } } } public class SendPipelineListener : StanzaListener { private string[] after_actions_const = {"MODIFY_BODY"}; public override string action_group { get { return "ADD_NODES"; } } public override string[] after_actions { get { return after_actions_const; } } public override async bool run(XmppStream stream, MessageStanza message) { if (message.body == null) return false; if (message.type_ != MessageStanza.TYPE_CHAT) return false; message.stanza.put_node(new StanzaNode.build(STATE_ACTIVE, NS_URI).add_self_xmlns()); return false; } } }