Update panels serialization from global to per-workspace (#30652)

Closes #27834

This PR changes project panel, outline panel and collab panel
serialization from global to per-workspace, so configurations are
restored only within the same workspace. Handles remote workspaces too.
Opening a new window will start with a fresh panel defaults e.g. width.

Release Notes:

- Improved project panel, outline panel, and collab panel to persist
width on a per-workspace basis. New windows will use the width specified
in the `default_width` setting.

crates/collab_ui/src/collab_panel.rs

@@ -378,16 +378,27 @@ impl CollabPanel {
         workspace: WeakEntity<Workspace>,
         mut cx: AsyncWindowContext,
     ) -> anyhow::Result<Entity<Self>> {
-        let serialized_panel = cx
+        let serialized_panel = match workspace
-            .background_spawn(async move { KEY_VALUE_STORE.read_kvp(COLLABORATION_PANEL_KEY) })
+            .read_with(&cx, |workspace, _| {
-            .await
+                CollabPanel::serialization_key(workspace)
-            .map_err(|_| anyhow::anyhow!("Failed to read collaboration panel from key value store"))
+            })
-            .log_err()
+            .ok()
             .flatten()
-            .map(|panel| serde_json::from_str::<SerializedCollabPanel>(&panel))
+        {
-            .transpose()
+            Some(serialization_key) => cx
-            .log_err()
+                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
-            .flatten();
+                .await
+                .map_err(|_| {
+                    anyhow::anyhow!("Failed to read collaboration panel from key value store")
+                })
+                .log_err()
+                .flatten()
+                .map(|panel| serde_json::from_str::<SerializedCollabPanel>(&panel))
+                .transpose()
+                .log_err()
+                .flatten(),
+            None => None,
+        };
 
         workspace.update_in(&mut cx, |workspace, window, cx| {
             let panel = CollabPanel::new(workspace, window, cx);
@@ -407,14 +418,30 @@ impl CollabPanel {
         })
     }
 
+    fn serialization_key(workspace: &Workspace) -> Option<String> {
+        workspace
+            .database_id()
+            .map(|id| i64::from(id).to_string())
+            .or(workspace.session_id())
+            .map(|id| format!("{}-{:?}", COLLABORATION_PANEL_KEY, id))
+    }
+
     fn serialize(&mut self, cx: &mut Context<Self>) {
+        let Some(serialization_key) = self
+            .workspace
+            .update(cx, |workspace, _| CollabPanel::serialization_key(workspace))
+            .ok()
+            .flatten()
+        else {
+            return;
+        };
         let width = self.width;
         let collapsed_channels = self.collapsed_channels.clone();
         self.pending_serialization = cx.background_spawn(
             async move {
                 KEY_VALUE_STORE
                     .write_kvp(
-                        COLLABORATION_PANEL_KEY.into(),
+                        serialization_key,
                         serde_json::to_string(&SerializedCollabPanel {
                             width,
                             collapsed_channels: Some(
@@ -2999,10 +3026,12 @@ impl Panel for CollabPanel {
             .unwrap_or_else(|| CollaborationPanelSettings::get_global(cx).default_width)
     }
 
-    fn set_size(&mut self, size: Option<Pixels>, _: &mut Window, cx: &mut Context<Self>) {
+    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
         self.width = size;
-        self.serialize(cx);
         cx.notify();
+        cx.defer_in(window, |this, _, cx| {
+            this.serialize(cx);
+        });
     }
 
     fn icon(&self, _window: &Window, cx: &App) -> Option<ui::IconName> {

crates/outline_panel/src/outline_panel.rs

@@ -680,16 +680,25 @@ impl OutlinePanel {
         workspace: WeakEntity<Workspace>,
         mut cx: AsyncWindowContext,
     ) -> anyhow::Result<Entity<Self>> {
-        let serialized_panel = cx
+        let serialized_panel = match workspace
-            .background_spawn(async move { KEY_VALUE_STORE.read_kvp(OUTLINE_PANEL_KEY) })
+            .read_with(&cx, |workspace, _| {
-            .await
+                OutlinePanel::serialization_key(workspace)
-            .context("loading outline panel")
+            })
-            .log_err()
+            .ok()
             .flatten()
-            .map(|panel| serde_json::from_str::<SerializedOutlinePanel>(&panel))
+        {
-            .transpose()
+            Some(serialization_key) => cx
-            .log_err()
+                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
-            .flatten();
+                .await
+                .context("loading outline panel")
+                .log_err()
+                .flatten()
+                .map(|panel| serde_json::from_str::<SerializedOutlinePanel>(&panel))
+                .transpose()
+                .log_err()
+                .flatten(),
+            None => None,
+        };
 
         workspace.update_in(&mut cx, |workspace, window, cx| {
             let panel = Self::new(workspace, window, cx);
@@ -845,14 +854,32 @@ impl OutlinePanel {
         outline_panel
     }
 
+    fn serialization_key(workspace: &Workspace) -> Option<String> {
+        workspace
+            .database_id()
+            .map(|id| i64::from(id).to_string())
+            .or(workspace.session_id())
+            .map(|id| format!("{}-{:?}", OUTLINE_PANEL_KEY, id))
+    }
+
     fn serialize(&mut self, cx: &mut Context<Self>) {
+        let Some(serialization_key) = self
+            .workspace
+            .update(cx, |workspace, _| {
+                OutlinePanel::serialization_key(workspace)
+            })
+            .ok()
+            .flatten()
+        else {
+            return;
+        };
         let width = self.width;
         let active = Some(self.active);
         self.pending_serialization = cx.background_spawn(
             async move {
                 KEY_VALUE_STORE
                     .write_kvp(
-                        OUTLINE_PANEL_KEY.into(),
+                        serialization_key,
                         serde_json::to_string(&SerializedOutlinePanel { width, active })?,
                     )
                     .await?;
@@ -4803,10 +4830,12 @@ impl Panel for OutlinePanel {
             .unwrap_or_else(|| OutlinePanelSettings::get_global(cx).default_width)
     }
 
-    fn set_size(&mut self, size: Option<Pixels>, _: &mut Window, cx: &mut Context<Self>) {
+    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
         self.width = size;
-        self.serialize(cx);
         cx.notify();
+        cx.defer_in(window, |this, _, cx| {
+            this.serialize(cx);
+        });
     }
 
     fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {

crates/project_panel/src/project_panel.rs

@@ -592,16 +592,25 @@ impl ProjectPanel {
         workspace: WeakEntity<Workspace>,
         mut cx: AsyncWindowContext,
     ) -> Result<Entity<Self>> {
-        let serialized_panel = cx
+        let serialized_panel = match workspace
-            .background_spawn(async move { KEY_VALUE_STORE.read_kvp(PROJECT_PANEL_KEY) })
+            .read_with(&cx, |workspace, _| {
-            .await
+                ProjectPanel::serialization_key(workspace)
-            .map_err(|e| anyhow!("Failed to load project panel: {}", e))
+            })
-            .log_err()
+            .ok()
             .flatten()
-            .map(|panel| serde_json::from_str::<SerializedProjectPanel>(&panel))
+        {
-            .transpose()
+            Some(serialization_key) => cx
-            .log_err()
+                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
-            .flatten();
+                .await
+                .map_err(|e| anyhow!("Failed to load project panel: {}", e))
+                .log_err()
+                .flatten()
+                .map(|panel| serde_json::from_str::<SerializedProjectPanel>(&panel))
+                .transpose()
+                .log_err()
+                .flatten(),
+            None => None,
+        };
 
         workspace.update_in(&mut cx, |workspace, window, cx| {
             let panel = ProjectPanel::new(workspace, window, cx);
@@ -673,13 +682,31 @@ impl ProjectPanel {
             .or_insert(diagnostic_severity);
     }
 
+    fn serialization_key(workspace: &Workspace) -> Option<String> {
+        workspace
+            .database_id()
+            .map(|id| i64::from(id).to_string())
+            .or(workspace.session_id())
+            .map(|id| format!("{}-{:?}", PROJECT_PANEL_KEY, id))
+    }
+
     fn serialize(&mut self, cx: &mut Context<Self>) {
+        let Some(serialization_key) = self
+            .workspace
+            .update(cx, |workspace, _| {
+                ProjectPanel::serialization_key(workspace)
+            })
+            .ok()
+            .flatten()
+        else {
+            return;
+        };
         let width = self.width;
         self.pending_serialization = cx.background_spawn(
             async move {
                 KEY_VALUE_STORE
                     .write_kvp(
-                        PROJECT_PANEL_KEY.into(),
+                        serialization_key,
                         serde_json::to_string(&SerializedProjectPanel { width })?,
                     )
                     .await?;
@@ -4967,10 +4994,12 @@ impl Panel for ProjectPanel {
             .unwrap_or_else(|| ProjectPanelSettings::get_global(cx).default_width)
     }
 
-    fn set_size(&mut self, size: Option<Pixels>, _: &mut Window, cx: &mut Context<Self>) {
+    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
         self.width = size;
-        self.serialize(cx);
         cx.notify();
+        cx.defer_in(window, |this, _, cx| {
+            this.serialize(cx);
+        });
     }
 
     fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {