Show missing subitems (#189)

Author: l4l

src/draw.rs

@@ -54,7 +54,7 @@ impl<'a> Drawables<'a> {
                 self.state.processed_entries(),
                 self.state.skip_offset(),
                 self.state.selected_item(),
-                self.state.has_subitems(),
+                self.state.selected_has_subitems(),
                 self.tx.take().unwrap(),
                 &self.list_config,
             ),
@@ -84,7 +84,7 @@ pub fn make_drawables<'c: 'it, 's: 'it, 'it>(
         let list_space = list_config.space_for_entries(
             state.processed_entries().len().max(1),
             scale,
-            state.has_subitems(),
+            state.selected_has_subitems(),
         );
         Some(Space {
             width: 0.,

src/state.rs

@@ -48,6 +48,7 @@ impl InputBuffer {
 pub struct State {
     input_buffer: InputBuffer,
     skip_offset: usize,
+    // index without considering filtering
     selected_item: usize,
     selected_subitem: usize,
     filtered_lines: FilteredLines,
@@ -146,9 +147,11 @@ impl State {
         self.selected_item
     }
 
-    pub fn has_subitems(&self) -> bool {
-        // For now either all items has subname or none.
-        self.inner.subentries_len(self.selected_item) > 0
+    pub fn selected_has_subitems(&self) -> bool {
+        self.filtered_lines
+            .index(self.selected_item)
+            .map(|idx| self.inner.subentries_len(idx))
+            .is_some_and(|count| count > 0)
     }
 
     pub fn processed_entries(&self) -> impl ExactSizeIterator<Item = ListItem<'_>> {