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using Gee;
using Xmpp.Core;
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<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0333_chat_markers");
public signal void marker_received(XmppStream stream, string jid, string marker, string id);
public void send_marker(XmppStream stream, string jid, string message_id, string type_, string marker) {
Message.Stanza received_message = new Message.Stanza();
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(Message.Module.IDENTITY).send_message(stream, received_message);
}
public static bool requests_marking(Message.Stanza message) {
StanzaNode markable_node = message.stanza.get_subnode("markable", NS_URI);
return markable_node != null;
}
public override void attach(XmppStream stream) {
Iq.Module.require(stream);
Message.Module.require(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_received_message(XmppStream stream, Message.Stanza message) {
if (message.type_ != Message.Stanza.TYPE_CHAT) return;
Gee.List<StanzaNode> nodes = message.stanza.get_all_subnodes();
foreach (StanzaNode node in nodes) {
if (node.ns_uri == NS_URI && node.name in MARKERS) {
marker_received(stream, message.from, node.name, node.get_attribute("id", NS_URI));
}
}
}
private void on_pre_send_message(XmppStream stream, Message.Stanza message) {
StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
if (received_node != null) return;
if (message.body == null) return;
if (message.type_ != Message.Stanza.TYPE_CHAT) return;
message.stanza.put_node(new StanzaNode.build("markable", NS_URI).add_self_xmlns());
}
}
}
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