using Gee; namespace Xmpp.Xep.ChatMarkers { private const string NS_URI = "urn:xmpp:chat-markers:0"; public const string MARKER_RECEIVED = "received"; public const string MARKER_DISPLAYED = "displayed"; public const string MARKER_ACKNOWLEDGED = "acknowledged"; private const string[] MARKERS = {MARKER_RECEIVED, MARKER_DISPLAYED, MARKER_ACKNOWLEDGED}; public class Module : XmppStreamModule { public static ModuleIdentity IDENTITY = new ModuleIdentity(NS_URI, "0333_chat_markers"); public signal void marker_received(XmppStream stream, Jid jid, string marker, string id, MessageStanza message); private SendPipelineListener send_pipeline_listener = new SendPipelineListener(); public void send_marker(XmppStream stream, Jid jid, string message_id, string type_, string marker) { MessageStanza received_message = new MessageStanza(); received_message.to = jid; received_message.type_ = type_; received_message.stanza.put_node(new StanzaNode.build(marker, NS_URI).add_self_xmlns().put_attribute("id", message_id)); stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, received_message); } public static bool requests_marking(MessageStanza message) { StanzaNode markable_node = message.stanza.get_subnode("markable", NS_URI); return markable_node != null; } 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).send_pipeline.disconnect(send_pipeline_listener); stream.get_module(MessageModule.IDENTITY).received_message.disconnect(on_received_message); } 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) { Gee.List nodes = message.stanza.get_all_subnodes(); foreach (StanzaNode node in nodes) { if (node.ns_uri == NS_URI && node.name in MARKERS) { string? to_stanza_id = node.get_attribute("id", NS_URI); if (to_stanza_id != null) { marker_received(stream, message.from, node.name, to_stanza_id, message); } } } } } public class SendPipelineListener : StanzaListener { private const string[] after_actions_const = {}; 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) { StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI); if (received_node != null) return false; if (message.body == null) return false; if (message.type_ != MessageStanza.TYPE_CHAT) return false; message.stanza.put_node(new StanzaNode.build("markable", NS_URI).add_self_xmlns()); return false; } } }