Remove useless background highlights code

crates/editor/src/display_map.rs

@@ -308,9 +308,6 @@ impl DisplayMap {
 pub struct Highlights<'a> {
     pub text_highlights: Option<&'a TextHighlights>,
     pub inlay_highlights: Option<&'a InlayHighlights>,
-    // TODO kb remove, backgrounds are not handled in the *Map codegi
-    pub inlay_background_highlights:
-        Option<TreeMap<Option<TypeId>, Arc<(HighlightStyle, &'a [InlayHighlight])>>>,
     pub inlay_highlight_style: Option<HighlightStyle>,
     pub suggestion_highlight_style: Option<HighlightStyle>,
 }
@@ -482,9 +479,6 @@ impl DisplaySnapshot {
         &'a self,
         display_rows: Range<u32>,
         language_aware: bool,
-        inlay_background_highlights: Option<
-            TreeMap<Option<TypeId>, Arc<(HighlightStyle, &'a [InlayHighlight])>>,
-        >,
         inlay_highlight_style: Option<HighlightStyle>,
         suggestion_highlight_style: Option<HighlightStyle>,
     ) -> DisplayChunks<'_> {
@@ -494,7 +488,6 @@ impl DisplaySnapshot {
             Highlights {
                 text_highlights: Some(&self.text_highlights),
                 inlay_highlights: Some(&self.inlay_highlights),
-                inlay_background_highlights,
                 inlay_highlight_style,
                 suggestion_highlight_style,
             },
@@ -1714,7 +1707,7 @@ pub mod tests {
     ) -> Vec<(String, Option<Color>, Option<Color>)> {
         let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
         let mut chunks: Vec<(String, Option<Color>, Option<Color>)> = Vec::new();
-        for chunk in snapshot.chunks(rows, true, None, None, None) {
+        for chunk in snapshot.chunks(rows, true, None, None) {
             let syntax_color = chunk
                 .syntax_highlight_id
                 .and_then(|id| id.style(theme)?.color);

crates/editor/src/editor.rs

@@ -7823,6 +7823,7 @@ impl Editor {
         color_fetcher: fn(&Theme) -> Color,
         cx: &mut ViewContext<Self>,
     ) {
+        // TODO: no actual highlights happen for inlays currently, find a way to do that
         self.inlay_background_highlights
             .insert(Some(TypeId::of::<T>()), (color_fetcher, ranges));
         cx.notify();

crates/editor/src/element.rs

@@ -54,7 +54,6 @@ use std::{
     ops::Range,
     sync::Arc,
 };
-use sum_tree::TreeMap;
 use text::Point;
 use workspace::item::Item;
 
@@ -1548,7 +1547,6 @@ impl EditorElement {
         &mut self,
         rows: Range<u32>,
         line_number_layouts: &[Option<Line>],
-        editor: &mut Editor,
         snapshot: &EditorSnapshot,
         cx: &ViewContext<Editor>,
     ) -> Vec<LineWithInvisibles> {
@@ -1593,28 +1591,10 @@ impl EditorElement {
                 .collect()
         } else {
             let style = &self.style;
-            let theme = theme::current(cx);
-            let inlay_background_highlights =
-                TreeMap::from_ordered_entries(editor.inlay_background_highlights.iter().map(
-                    |(type_id, (color_fetcher, ranges))| {
-                        let color = Some(color_fetcher(&theme));
-                        (
-                            *type_id,
-                            Arc::new((
-                                HighlightStyle {
-                                    color,
-                                    ..HighlightStyle::default()
-                                },
-                                ranges.as_slice(),
-                            )),
-                        )
-                    },
-                ));
             let chunks = snapshot
                 .chunks(
                     rows.clone(),
                     true,
-                    Some(inlay_background_highlights),
                     Some(style.theme.hint),
                     Some(style.theme.suggestion),
                 )
@@ -2375,13 +2355,8 @@ impl Element<Editor> for EditorElement {
         let scrollbar_row_range = scroll_position.y()..(scroll_position.y() + height_in_lines);
 
         let mut max_visible_line_width = 0.0;
-        let line_layouts = self.layout_lines(
-            start_row..end_row,
-            &line_number_layouts,
-            editor,
-            &snapshot,
-            cx,
-        );
+        let line_layouts =
+            self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
         for line_with_invisibles in &line_layouts {
             if line_with_invisibles.line.width() > max_visible_line_width {
                 max_visible_line_width = line_with_invisibles.line.width();

crates/editor/src/inlay_hint_cache.rs

@@ -485,6 +485,7 @@ impl InlayHintCache {
         self.hints.clear();
     }
 
+    // TODO kb have a map
     pub fn hint_by_id(&self, excerpt_id: ExcerptId, hint_id: InlayId) -> Option<InlayHint> {
         self.hints
             .get(&excerpt_id)?

crates/editor/src/link_go_to_definition.rs

@@ -224,7 +224,6 @@ pub fn update_inlay_link_and_hover_points(
                             extra_shift_left += 1;
                             extra_shift_right += 1;
                         }
-                        // TODO kb is it right for label part cases? for `\n` in hints and fold cases?
                         if cached_hint.padding_right {
                             extra_shift_right += 1;
                         }