gpui(windows): Move jumplist creation to background thread (#47956)

This can block the main thread too much otherwise

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/workspace/src/history_manager.rs

@@ -2,7 +2,7 @@ use std::path::PathBuf;
 
 use gpui::{AppContext, Entity, Global, MenuItem};
 use smallvec::SmallVec;
-use ui::App;
+use ui::{App, Context};
 use util::{ResultExt, paths::PathExt};
 
 use crate::{
@@ -71,7 +71,12 @@ impl HistoryManager {
         cx.set_global(GlobalHistoryManager(history_manager));
     }
 
-    pub fn update_history(&mut self, id: WorkspaceId, entry: HistoryManagerEntry, cx: &App) {
+    pub fn update_history(
+        &mut self,
+        id: WorkspaceId,
+        entry: HistoryManagerEntry,
+        cx: &mut Context<'_, HistoryManager>,
+    ) {
         if let Some(pos) = self.history.iter().position(|e| e.id == id) {
             self.history.remove(pos);
         }
@@ -79,7 +84,7 @@ impl HistoryManager {
         self.update_jump_list(cx);
     }
 
-    pub fn delete_history(&mut self, id: WorkspaceId, cx: &App) {
+    pub fn delete_history(&mut self, id: WorkspaceId, cx: &mut Context<'_, HistoryManager>) {
         let Some(pos) = self.history.iter().position(|e| e.id == id) else {
             return;
         };
@@ -87,7 +92,7 @@ impl HistoryManager {
         self.update_jump_list(cx);
     }
 
-    fn update_jump_list(&mut self, cx: &App) {
+    fn update_jump_list(&mut self, cx: &mut Context<'_, HistoryManager>) {
         let menus = vec![MenuItem::action("New Window", NewWindow)];
         let entries = self
             .history
@@ -96,29 +101,25 @@ impl HistoryManager {
             .map(|entry| entry.path.clone())
             .collect::<Vec<_>>();
         let user_removed = cx.update_jump_list(menus, entries);
-        self.remove_user_removed_workspaces(user_removed, cx);
-    }
-
-    pub fn remove_user_removed_workspaces(
-        &mut self,
-        user_removed: Vec<SmallVec<[PathBuf; 2]>>,
-        cx: &App,
-    ) {
-        if user_removed.is_empty() {
-            return;
-        }
-        let mut deleted_ids = Vec::new();
-        for idx in (0..self.history.len()).rev() {
-            if let Some(entry) = self.history.get(idx)
-                && user_removed.contains(&entry.path)
-            {
-                deleted_ids.push(entry.id);
-                self.history.remove(idx);
+        cx.spawn(async move |this, cx| {
+            let user_removed = user_removed.await;
+            if user_removed.is_empty() {
+                return;
             }
-        }
-        cx.spawn(async move |_| {
-            for id in deleted_ids.iter() {
-                WORKSPACE_DB.delete_workspace_by_id(*id).await.log_err();
+            let mut deleted_ids = Vec::new();
+            if let Ok(()) = this.update(cx, |this, _| {
+                for idx in (0..this.history.len()).rev() {
+                    if let Some(entry) = this.history.get(idx)
+                        && user_removed.contains(&entry.path)
+                    {
+                        deleted_ids.push(entry.id);
+                        this.history.remove(idx);
+                    }
+                }
+            }) {
+                for id in deleted_ids.iter() {
+                    WORKSPACE_DB.delete_workspace_by_id(*id).await.log_err();
+                }
             }
         })
         .detach();