remove extraneous depth field

crates/channel/src/channel_store.rs

@@ -146,13 +146,12 @@ impl ChannelStore {
         })
     }
 
-    pub fn channel_at_index(&self, ix: usize) -> Option<(usize, &Arc<Channel>, &Arc<[ChannelId]>)> {
+    pub fn channel_at_index(&self, ix: usize) -> Option<(&Arc<Channel>, &Arc<[ChannelId]>)> {
         let path = self.channel_index.get(ix)?;
         let id = path.last().unwrap();
         let channel = self.channel_for_id(*id).unwrap();
 
-
-        Some((path.len() - 1, channel, path))
+        Some((channel, path))
     }
 
     pub fn channel_invitations(&self) -> &[Arc<Channel>] {

crates/channel/src/channel_store/channel_index.rs

@@ -1,4 +1,4 @@
-use std::{ops::Deref, sync::Arc};
+use std::sync::Arc;
 
 use collections::HashMap;
 use rpc::proto;
@@ -25,6 +25,18 @@ impl ChannelIndex {
         self.channels_by_id.clear();
     }
 
+    pub fn len(&self) -> usize {
+        self.paths.len()
+    }
+
+    pub fn get(&self, idx: usize) -> Option<&ChannelPath> {
+        self.paths.get(idx)
+    }
+
+    pub fn iter(&self) -> impl Iterator<Item = &ChannelPath> {
+        self.paths.iter()
+    }
+
     /// Remove the given edge from this index. This will not remove the channel
     /// and may result in dangling channels.
     pub fn delete_edge(&mut self, parent_id: ChannelId, channel_id: ChannelId) {
@@ -50,14 +62,6 @@ impl ChannelIndex {
     }
 }
 
-impl Deref for ChannelIndex {
-    type Target = Vec<ChannelPath>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.paths
-    }
-}
-
 /// A guard for ensuring that the paths index maintains its sort and uniqueness
 /// invariants after a series of insertions
 pub struct ChannelPathsUpsertGuard<'a> {

crates/collab_ui/src/collab_panel.rs

@@ -785,8 +785,9 @@ impl CollabPanel {
                 }
                 let mut collapse_depth = None;
                 for mat in matches {
-                    let (depth, channel, path) =
+                    let (channel, path) =
                         channel_store.channel_at_index(mat.candidate_id).unwrap();
+                    let depth = path.len() - 1;
 
                     let location: ChannelLocation<'_> = (channel.id, path).into();