From f4520d4184251b787db70ccee4403154b308a437 Mon Sep 17 00:00:00 2001
From: Antonio Scandurra <me@as-cii.com>
Date: Fri, 18 Mar 2022 18:07:03 +0100
Subject: [PATCH] WIP

---
 crates/editor/src/editor.rs       |  2 +-
 crates/editor/src/items.rs        |  4 ++--
 crates/workspace/src/workspace.rs | 21 +++++++++++++++------
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index 00aa8283254a8465b11b99385dbf570fc4ec5715..3f1c9c5fd2aacbf53f6687c280b902cc03120d64 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -341,7 +341,7 @@ pub fn init(cx: &mut MutableAppContext) {
     cx.add_async_action(Editor::find_all_references);
 
     workspace::register_project_item::<Editor>(cx);
-    workspace::register_followed_item::<Editor>(cx);
+    workspace::register_followable_item::<Editor>(cx);
 }
 
 trait SelectionExt {
diff --git a/crates/editor/src/items.rs b/crates/editor/src/items.rs
index 7d89341c0d339ee35875ed772955330fdfa1747d..410ffcddca38f4127605023689eec593d5a066d9 100644
--- a/crates/editor/src/items.rs
+++ b/crates/editor/src/items.rs
@@ -11,10 +11,10 @@ use std::{fmt::Write, path::PathBuf};
 use text::{Point, Selection};
 use util::ResultExt;
 use workspace::{
-    FollowedItem, Item, ItemHandle, ItemNavHistory, ProjectItem, Settings, StatusItemView,
+    FollowableItem, Item, ItemHandle, ItemNavHistory, ProjectItem, Settings, StatusItemView,
 };
 
-impl FollowedItem for Editor {
+impl FollowableItem for Editor {
     fn for_state_message(
         pane: ViewHandle<workspace::Pane>,
         project: ModelHandle<Project>,
diff --git a/crates/workspace/src/workspace.rs b/crates/workspace/src/workspace.rs
index 3cbd167319d06e364c62b0fe6f31b1d1171adf05..b011566c0fbe93a7065b896c0a8c402068967e27 100644
--- a/crates/workspace/src/workspace.rs
+++ b/crates/workspace/src/workspace.rs
@@ -131,7 +131,7 @@ pub fn register_project_item<I: ProjectItem>(cx: &mut MutableAppContext) {
     });
 }
 
-pub fn register_followed_item<I: FollowedItem>(cx: &mut MutableAppContext) {
+pub fn register_followable_item<I: FollowableItem>(cx: &mut MutableAppContext) {
     cx.update_default_global(|builders: &mut FollowedItemBuilders, _| {
         builders.insert(
             TypeId::of::<I>(),
@@ -234,7 +234,7 @@ pub trait ProjectItem: Item {
     ) -> Self;
 }
 
-pub trait FollowedItem: Item {
+pub trait FollowableItem: Item {
     fn for_state_message(
         pane: ViewHandle<Pane>,
         project: ModelHandle<Project>,
@@ -261,7 +261,7 @@ pub trait FollowedItemHandle {
     ) -> Option<proto::update_followers::update_view::Variant>;
 }
 
-impl<T: FollowedItem> FollowedItemHandle for ViewHandle<T> {
+impl<T: FollowableItem> FollowedItemHandle for ViewHandle<T> {
     fn id(&self) -> usize {
         self.id()
     }
@@ -586,7 +586,12 @@ struct LeaderState {
 
 struct FollowerState {
     active_view_id: Option<usize>,
-    items_by_leader_view_id: HashMap<usize, Box<dyn ItemHandle>>,
+    items_by_leader_view_id: HashMap<usize, FollowerItem>,
+}
+
+enum FollowerItem {
+    Loading(Vec<proto::update_followers::Variant>),
+    Loaded(Box<dyn FollowedItemHandle>),
 }
 
 impl Workspace {
@@ -1524,12 +1529,16 @@ impl Workspace {
                 .ok_or_else(|| anyhow!("invalid update"))?
             {
                 proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
-                    for (pane, state) in follower_states {
+                    for state in follower_states.values_mut() {
                         state.active_view_id = update_active_view.id.map(|id| id as usize);
                     }
                 }
+                proto::update_followers::Variant::UpdateView(update_view) => {
+                    for state in follower_states.values_mut() {
+                        state.items_by_leader_view_id.get(k)
+                    }
+                }
                 proto::update_followers::Variant::CreateView(_) => todo!(),
-                proto::update_followers::Variant::UpdateView(_) => todo!(),
             }
 
             this.leader_updated(leader_id, cx);