Autosave files on close, when setting is afterDelay (#36929)

Closes https://github.com/zed-industries/zed/issues/12149
Closes #35524

Release Notes:

- Improved autosave behavior, to prevent a confirmation dialog when
quickly closing files and using the `afterDelay` setting

---------

Co-authored-by: MrSubidubi <finn@zed.dev>

crates/search/src/project_search.rs

@@ -1071,18 +1071,12 @@ impl ProjectSearchView {
         window: &mut Window,
         cx: &mut Context<Self>,
     ) -> Task<anyhow::Result<()>> {
-        use workspace::AutosaveSetting;
-
         let project = self.entity.read(cx).project.clone();
 
         let can_autosave = self.results_editor.can_autosave(cx);
         let autosave_setting = self.results_editor.workspace_settings(cx).autosave;
 
-        let will_autosave = can_autosave
-            && matches!(
-                autosave_setting,
-                AutosaveSetting::OnFocusChange | AutosaveSetting::OnWindowChange
-            );
+        let will_autosave = can_autosave && autosave_setting.should_save_on_close();
 
         let is_dirty = self.is_dirty(cx);
 

crates/workspace/src/pane.rs

@@ -2082,10 +2082,8 @@ impl Pane {
         } else if is_dirty && (can_save || can_save_as) {
             if save_intent == SaveIntent::Close {
                 let will_autosave = cx.update(|_window, cx| {
-                    matches!(
-                        item.workspace_settings(cx).autosave,
-                        AutosaveSetting::OnFocusChange | AutosaveSetting::OnWindowChange
-                    ) && item.can_autosave(cx)
+                    item.can_autosave(cx)
+                        && item.workspace_settings(cx).autosave.should_save_on_close()
                 })?;
                 if !will_autosave {
                     let item_id = item.item_id();

crates/workspace/src/workspace.rs

@@ -8737,6 +8737,36 @@ mod tests {
         cx.executor().advance_clock(Duration::from_millis(250));
         item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 
+        // Autosave after delay, should save earlier than delay if tab is closed
+        item.update(cx, |item, cx| {
+            item.is_dirty = true;
+            cx.emit(ItemEvent::Edit);
+        });
+        cx.executor().advance_clock(Duration::from_millis(250));
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
+
+        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
+        pane.update_in(cx, |pane, window, cx| {
+            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
+        })
+        .await
+        .unwrap();
+        assert!(!cx.has_pending_prompt());
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
+
+        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
+        workspace.update_in(cx, |workspace, window, cx| {
+            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
+        });
+        item.update_in(cx, |item, _window, cx| {
+            item.is_dirty = true;
+            for project_item in &mut item.project_items {
+                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
+            }
+        });
+        cx.run_until_parked();
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
+
         // Autosave on focus change, ensuring closing the tab counts as such.
         item.update(cx, |item, cx| {
             SettingsStore::update_global(cx, |settings, cx| {
@@ -8756,7 +8786,7 @@ mod tests {
         .await
         .unwrap();
         assert!(!cx.has_pending_prompt());
-        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 
         // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
         workspace.update_in(cx, |workspace, window, cx| {
@@ -8770,7 +8800,7 @@ mod tests {
             window.blur();
         });
         cx.run_until_parked();
-        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 
         // Ensure autosave is prevented for deleted files also when closing the buffer.
         let _close_items = pane.update_in(cx, |pane, window, cx| {
@@ -8778,7 +8808,7 @@ mod tests {
         });
         cx.run_until_parked();
         assert!(cx.has_pending_prompt());
-        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
+        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
     }
 
     #[gpui::test]

crates/workspace/src/workspace_settings.rs

@@ -254,6 +254,17 @@ pub enum AutosaveSetting {
     OnWindowChange,
 }
 
+impl AutosaveSetting {
+    pub fn should_save_on_close(&self) -> bool {
+        matches!(
+            &self,
+            AutosaveSetting::OnFocusChange
+                | AutosaveSetting::OnWindowChange
+                | AutosaveSetting::AfterDelay { .. }
+        )
+    }
+}
+
 #[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq, JsonSchema)]
 #[serde(rename_all = "snake_case")]
 pub enum PaneSplitDirectionHorizontal {

docs/src/configuring-zed.md

@@ -246,6 +246,8 @@ Define extensions which should be installed (`true`) or never installed (`false`
 }
 ```
 
+Note that a save will be triggered when an unsaved tab is closed, even if this is earlier than the configured inactivity period.
+
 ## Autoscroll on Clicks
 
 - Description: Whether to scroll when clicking near the edge of the visible text area.