Improve code action picker by displaying it inline

helix-term/src/commands.rs

@@ -3482,12 +3482,17 @@ pub fn code_action(cx: &mut Context) {
 
     cx.callback(
         future,
-        move |_editor: &mut Editor,
+        move |editor: &mut Editor,
               compositor: &mut Compositor,
               response: Option<lsp::CodeActionResponse>| {
             if let Some(actions) = response {
+                if actions.is_empty() {
+                    editor.set_status("No code actions available".to_owned());
+                    return;
+                }
+
                 let picker = Picker::new(
-                    true,
+                    false,
                     actions,
                     |action| match action {
                         lsp::CodeActionOrCommand::CodeAction(action) => {
@@ -3515,7 +3520,8 @@ pub fn code_action(cx: &mut Context) {
                         }
                     },
                 );
-                compositor.push(Box::new(picker))
+                let popup = Popup::new("code-action", picker);
+                compositor.push(Box::new(popup))
             }
         },
     )

helix-term/src/ui/picker.rs

@@ -393,6 +393,16 @@ fn inner_rect(area: Rect) -> Rect {
 }
 
 impl<T: 'static> Component for Picker<T> {
+    fn required_size(&mut self, viewport: (u16, u16)) -> Option<(u16, u16)> {
+        let max_width = 50.min(viewport.0);
+        let max_height = 10.min(viewport.1.saturating_sub(2)); // add some spacing in the viewport
+
+        let height = (self.options.len() as u16 + 4) // add some spacing for input + padding
+            .min(max_height);
+        let width = max_width;
+        Some((width, height))
+    }
+
     fn handle_event(&mut self, event: Event, cx: &mut Context) -> EventResult {
         let key_event = match event {
             Event::Key(event) => event,