Persist connection info

Cargo.toml

@@ -5,14 +5,15 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-eframe = { version = "0.35.0", features = ["default_fonts", "wgpu"] }
+eframe = { version = "0.35.0", features = ["default_fonts", "wgpu", "persistence"] }
 egui = "0.35.0"
 egui-wgpu = "0.35.0"
 env_logger = "0.11"
 futures = "0.3"
 image = "0.25"
 log = "0.4"
 parking_lot = { version = "0.12", features = ["deadlock_detection"] }
+serde = { version = "1", features = ["derive"] }
 tokio = { version = "1", features = ["full", "parking_lot"] }
 # egui-wgpu 0.35 requires wgpu ^29.0; "29.0" resolves to a compatible 29.0.x.
 wgpu = "29.0"

src/connect.rs

@@ -52,7 +52,9 @@ pub struct ConnectSettings {
 }
 
 /// Which authentication method the connect form is editing.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Default)]
+#[derive(
+    Clone, Copy, Debug, PartialEq, Eq, Hash, Default, serde::Serialize, serde::Deserialize,
+)]
 enum AuthMethod {
     #[default]
     ApiKey,
@@ -62,6 +64,12 @@ enum AuthMethod {
 /// The root window: a welcome screen holding the only connect form in the app.
 /// Each successful Connect click spawns a dedicated room window. Inputs for both
 /// auth methods are kept so switching tabs doesn't lose what was typed.
+///
+/// Persisted between runs via eframe storage (see `AppRoot`); `#[serde(default)]`
+/// lets a stored blob from an older version fall back to `Default` (env-seeded)
+/// for any missing field.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[serde(default)]
 pub struct ConnectView {
     method: AuthMethod,
     url: String,
@@ -74,6 +82,8 @@ pub struct ConnectView {
     auto_subscribe: bool,
     dynacast: bool,
     enable_e2ee: bool,
+    // Not persisted: secrets always start hidden on launch.
+    #[serde(skip)]
     show_secrets: bool,
 }
 

src/lib.rs

@@ -14,6 +14,9 @@ mod utils;
 
 pub static APP_NAME: &str = "LiveKit Client";
 
+/// eframe storage key under which the connect form is persisted between runs.
+const CONNECT_STORAGE_KEY: &str = "connect";
+
 /// A room window, shown as a deferred viewport so it repaints independently of
 /// the connect screen and of other rooms.
 struct WindowEntry {
@@ -45,8 +48,14 @@ impl AppRoot {
             .build()
             .unwrap();
 
+        // Restore the last-used connect form; fall back to env-seeded defaults.
+        let connect = cc
+            .storage
+            .and_then(|storage| eframe::get_value::<ConnectView>(storage, CONNECT_STORAGE_KEY))
+            .unwrap_or_default();
+
         Self {
-            connect: ConnectView::default(),
+            connect,
             render_state: cc.wgpu_render_state.clone().unwrap(),
             async_runtime,
             next_window_id: 0,
@@ -76,6 +85,15 @@ impl AppRoot {
 }
 
 impl eframe::App for AppRoot {
+    fn save(&mut self, storage: &mut dyn eframe::Storage) {
+        eframe::set_value(storage, CONNECT_STORAGE_KEY, &self.connect);
+    }
+
+    /// Scope persistence to our own connect settings; don't persist egui memory.
+    fn persist_egui_memory(&self) -> bool {
+        false
+    }
+
     fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
         if let Some(request) = self.connect.ui(ui) {
             self.open_room(request);

src/main.rs

@@ -17,6 +17,9 @@ fn main() {
     let options = eframe::NativeOptions {
         viewport,
         centered: true,
+        // Persist only the connect form (see AppRoot::save), not window geometry —
+        // the root window is fixed-size and centered.
+        persist_window: false,
         ..Default::default()
     };