deref options in macro and re-enable title bar settings

crates/settings/src/settings_ui.rs

@@ -7,9 +7,16 @@ use crate::SettingsStore;
 
 pub trait SettingsUi {
     fn settings_ui_item() -> SettingsUiItem {
+        // todo(settings_ui): remove this default impl, only entry should have a default impl
+        // because it's expected that the macro or custom impl use the item and the known paths to create the entry
         SettingsUiItem::None
     }
-    fn settings_ui_entry() -> SettingsUiEntry;
+
+    fn settings_ui_entry() -> SettingsUiEntry {
+        SettingsUiEntry {
+            item: SettingsUiEntryVariant::None,
+        }
+    }
 }
 
 pub struct SettingsUiEntry {
@@ -106,11 +113,11 @@ impl SettingsUi for bool {
     fn settings_ui_item() -> SettingsUiItem {
         SettingsUiItem::Single(SettingsUiItemSingle::SwitchField)
     }
+}
 
-    fn settings_ui_entry() -> SettingsUiEntry {
-        SettingsUiEntry {
-            item: SettingsUiEntryVariant::None,
-        }
+impl SettingsUi for Option<bool> {
+    fn settings_ui_item() -> SettingsUiItem {
+        SettingsUiItem::Single(SettingsUiItemSingle::SwitchField)
     }
 }
 
@@ -118,10 +125,4 @@ impl SettingsUi for u64 {
     fn settings_ui_item() -> SettingsUiItem {
         SettingsUiItem::Single(SettingsUiItemSingle::NumericStepper)
     }
-
-    fn settings_ui_entry() -> SettingsUiEntry {
-        SettingsUiEntry {
-            item: SettingsUiEntryVariant::None,
-        }
-    }
 }

crates/settings_ui_macros/src/settings_ui_macros.rs

@@ -88,7 +88,34 @@ pub fn derive_settings_ui(input: proc_macro::TokenStream) -> proc_macro::TokenSt
     proc_macro::TokenStream::from(expanded)
 }
 
+fn extract_type_from_option(ty: TokenStream) -> TokenStream {
+    match option_inner_type(ty.clone()) {
+        Some(inner_type) => inner_type,
+        None => ty,
+    }
+}
+
+fn option_inner_type(ty: TokenStream) -> Option<TokenStream> {
+    let ty = syn::parse2::<syn::Type>(ty).ok()?;
+    let syn::Type::Path(path) = ty else {
+        return None;
+    };
+    let segment = path.path.segments.last()?;
+    if segment.ident != "Option" {
+        return None;
+    }
+    let syn::PathArguments::AngleBracketed(args) = &segment.arguments else {
+        return None;
+    };
+    let arg = args.args.first()?;
+    let syn::GenericArgument::Type(ty) = arg else {
+        return None;
+    };
+    return Some(ty.to_token_stream());
+}
+
 fn map_ui_item_to_render(path: &str, ty: TokenStream) -> TokenStream {
+    let ty = extract_type_from_option(ty);
     quote! {
         settings::SettingsUiEntry {
             item: match #ty::settings_ui_item() {

crates/title_bar/src/title_bar_settings.rs

@@ -15,7 +15,7 @@ pub struct TitleBarSettings {
 }
 
 #[derive(Copy, Clone, Default, Serialize, Deserialize, JsonSchema, Debug, SettingsUi)]
-// #[settings_ui(group = "Title Bar", path = "title_bar")]
+#[settings_ui(group = "Title Bar", path = "title_bar")]
 pub struct TitleBarSettingsContent {
     /// Whether to show the branch icon beside branch switcher in the title bar.
     ///