.

crates/chat/src/lib.rs

@@ -468,7 +468,15 @@ impl ChatRegistry {
         self.trashes.clone()
     }
 
-    /// Get the relays that have seen a given message.
+    /// Get the relays that have seen a given rumor id.
+    pub fn rumor_seen_on(&self, id: &EventId) -> Option<HashSet<RelayUrl>> {
+        self.event_map
+            .read_blocking()
+            .get(id)
+            .map(|id| self.seen_on(id))
+    }
+
+    /// Get the relays that have seen a given gift wrap id.
     pub fn seen_on(&self, id: &EventId) -> HashSet<RelayUrl> {
         self.seens
             .read_blocking()

crates/chat_ui/src/lib.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 pub use actions::*;
 use anyhow::{Context as AnyhowContext, Error};
-use chat::{Message, RenderedMessage, Room, RoomEvent, SendReport, SendStatus};
+use chat::{ChatRegistry, Message, RenderedMessage, Room, RoomEvent, SendReport, SendStatus};
 use common::RenderedTimestamp;
 use gpui::prelude::FluentBuilder;
 use gpui::{
@@ -665,9 +665,46 @@ impl ChatPanel {
     }
 
     fn open_trace(&mut self, id: &EventId, window: &mut Window, cx: &mut Context<Self>) {
+        let chat = ChatRegistry::global(cx);
+        let seen_on = chat.read(cx).rumor_seen_on(id);
+
         window.open_modal(cx, move |this, _window, cx| {
-            // TODO
-            this.child(v_flex().child(""))
+            this.title("Seen on").show_close(true).child(
+                v_flex()
+                    .gap_1()
+                    .when_none(&seen_on, |this| {
+                        this.child(
+                            h_flex()
+                                .h_10()
+                                .justify_center()
+                                .text_sm()
+                                .bg(cx.theme().elevated_surface_background)
+                                .rounded(cx.theme().radius)
+                                .child("Message isn't traced yet"),
+                        )
+                    })
+                    .when_some(seen_on.as_ref(), |this, relays| {
+                        this.children({
+                            let mut items = vec![];
+
+                            for url in relays.iter() {
+                                items.push(
+                                    h_flex()
+                                        .h_7()
+                                        .px_2()
+                                        .gap_2()
+                                        .bg(cx.theme().elevated_surface_background)
+                                        .rounded(cx.theme().radius)
+                                        .text_sm()
+                                        .child(div().size_1p5().rounded_full().bg(gpui::green()))
+                                        .child(SharedString::from(url.to_string())),
+                                );
+                            }
+
+                            items
+                        })
+                    }),
+            )
         });
     }