Rename flaps to creases (#13144)

This is a simple rename and should be transparent for users.

Release Notes:

- N/A

crates/editor/src/display_map.rs

@@ -18,7 +18,7 @@
 //! [EditorElement]: crate::element::EditorElement
 
 mod block_map;
-mod flap_map;
+mod crease_map;
 mod fold_map;
 mod inlay_map;
 mod tab_map;
@@ -33,7 +33,7 @@ pub use block_map::{
 };
 use block_map::{BlockRow, BlockSnapshot};
 use collections::{HashMap, HashSet};
-pub use flap_map::*;
+pub use crease_map::*;
 pub use fold_map::{Fold, FoldId, FoldPlaceholder, FoldPoint};
 use fold_map::{FoldMap, FoldSnapshot};
 use gpui::{
@@ -106,7 +106,7 @@ pub struct DisplayMap {
     /// Regions of inlays that should be highlighted.
     inlay_highlights: InlayHighlights,
     /// A container for explicitly foldable ranges, which supersede indentation based fold range suggestions.
-    flap_map: FlapMap,
+    crease_map: CreaseMap,
     fold_placeholder: FoldPlaceholder,
     pub clip_at_line_ends: bool,
 }
@@ -139,7 +139,7 @@ impl DisplayMap {
             excerpt_header_height,
             excerpt_footer_height,
         );
-        let flap_map = FlapMap::default();
+        let crease_map = CreaseMap::default();
 
         cx.observe(&wrap_map, |_, _, cx| cx.notify()).detach();
 
@@ -151,7 +151,7 @@ impl DisplayMap {
             tab_map,
             wrap_map,
             block_map,
-            flap_map,
+            crease_map,
             fold_placeholder,
             text_highlights: Default::default(),
             inlay_highlights: Default::default(),
@@ -178,7 +178,7 @@ impl DisplayMap {
             tab_snapshot,
             wrap_snapshot,
             block_snapshot,
-            flap_snapshot: self.flap_map.snapshot(),
+            crease_snapshot: self.crease_map.snapshot(),
             text_highlights: self.text_highlights.clone(),
             inlay_highlights: self.inlay_highlights.clone(),
             clip_at_line_ends: self.clip_at_line_ends,
@@ -247,22 +247,22 @@ impl DisplayMap {
         self.block_map.read(snapshot, edits);
     }
 
-    pub fn insert_flaps(
+    pub fn insert_creases(
         &mut self,
-        flaps: impl IntoIterator<Item = Flap>,
+        creases: impl IntoIterator<Item = Crease>,
         cx: &mut ModelContext<Self>,
-    ) -> Vec<FlapId> {
+    ) -> Vec<CreaseId> {
         let snapshot = self.buffer.read(cx).snapshot(cx);
-        self.flap_map.insert(flaps, &snapshot)
+        self.crease_map.insert(creases, &snapshot)
     }
 
-    pub fn remove_flaps(
+    pub fn remove_creases(
         &mut self,
-        flap_ids: impl IntoIterator<Item = FlapId>,
+        crease_ids: impl IntoIterator<Item = CreaseId>,
         cx: &mut ModelContext<Self>,
     ) {
         let snapshot = self.buffer.read(cx).snapshot(cx);
-        self.flap_map.remove(flap_ids, &snapshot)
+        self.crease_map.remove(crease_ids, &snapshot)
     }
 
     pub fn insert_blocks(
@@ -472,7 +472,7 @@ pub struct HighlightedChunk<'a> {
 pub struct DisplaySnapshot {
     pub buffer_snapshot: MultiBufferSnapshot,
     pub fold_snapshot: FoldSnapshot,
-    pub flap_snapshot: FlapSnapshot,
+    pub crease_snapshot: CreaseSnapshot,
     inlay_snapshot: InlaySnapshot,
     tab_snapshot: TabSnapshot,
     wrap_snapshot: WrapSnapshot,
@@ -955,13 +955,13 @@ impl DisplaySnapshot {
         buffer_row: MultiBufferRow,
     ) -> Option<(Range<Point>, FoldPlaceholder)> {
         let start = MultiBufferPoint::new(buffer_row.0, self.buffer_snapshot.line_len(buffer_row));
-        if let Some(flap) = self
-            .flap_snapshot
+        if let Some(crease) = self
+            .crease_snapshot
             .query_row(buffer_row, &self.buffer_snapshot)
         {
             Some((
-                flap.range.to_point(&self.buffer_snapshot),
-                flap.placeholder.clone(),
+                crease.range.to_point(&self.buffer_snapshot),
+                crease.placeholder.clone(),
             ))
         } else if self.starts_indent(MultiBufferRow(start.row))
             && !self.is_line_folded(MultiBufferRow(start.row))
@@ -1946,7 +1946,7 @@ pub mod tests {
     }
 
     #[gpui::test]
-    fn test_flaps(cx: &mut gpui::AppContext) {
+    fn test_creases(cx: &mut gpui::AppContext) {
         init_test(cx, |_| {});
 
         let text = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj\nkkk\nlll";
@@ -1969,8 +1969,8 @@ pub mod tests {
             let range =
                 snapshot.anchor_before(Point::new(2, 0))..snapshot.anchor_after(Point::new(3, 3));
 
-            map.flap_map.insert(
-                [Flap::new(
+            map.crease_map.insert(
+                [Crease::new(
                     range,
                     FoldPlaceholder::test(),
                     |_row, _status, _toggle, _cx| div(),