add recents tab

crates/settings/src/lib.rs

@@ -46,8 +46,11 @@ setting_accessors! {
     pub nip4e: bool,
     pub trusted_relays: Vec<String>,
     pub file_server: Url,
+    pub recent_communities: Vec<String>,
 }
 
+const RECENT_COMMUNITIES_CAP: usize = 10;
+
 /// Signer kind
 #[derive(Debug, Clone, Default, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
 pub enum SignerKind {
@@ -130,6 +133,10 @@ pub struct Settings {
 
     /// Server for blossom media attachments
     pub file_server: Url,
+
+    /// Recently opened community ids, newest first
+    #[serde(default)]
+    pub recent_communities: Vec<String>,
 }
 
 impl Default for Settings {
@@ -142,6 +149,7 @@ impl Default for Settings {
             nip4e: false,
             trusted_relays: vec![],
             file_server: Url::parse(DEFAULT_FILE_SERVER).unwrap(),
+            recent_communities: vec![],
         }
     }
 }
@@ -324,4 +332,14 @@ impl AppSettings {
             }
         });
     }
+
+    /// Move a community to the front of the recently opened list
+    pub fn record_recent_community(&mut self, id: String, cx: &mut Context<Self>) {
+        self.inner.update(cx, |this, cx| {
+            this.recent_communities.retain(|existing| existing != &id);
+            this.recent_communities.insert(0, id);
+            this.recent_communities.truncate(RECENT_COMMUNITIES_CAP);
+            cx.notify();
+        });
+    }
 }