From 12091a9f2cad81c8a9e1707123eb6fbe48b5a183 Mon Sep 17 00:00:00 2001
From: Smit Barmase <heysmitbarmase@gmail.com>
Date: Thu, 5 Feb 2026 11:43:08 +0530
Subject: [PATCH] project_panel: Fix collapse_all_entries collapsing single
 worktree root completely (#48443)

For: https://github.com/zed-industries/zed/pull/47328

Release Notes:

- Fixed an issue where selecting "Collapse All" on the root directory or
triggering the collapse all action would sometimes collapse the entire
root instead of keeping it expanded when there's a single worktree.
---
 crates/project_panel/src/project_panel.rs     |  2 +-
 .../project_panel/src/project_panel_tests.rs  | 62 +++++++++++++++++++
 2 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/crates/project_panel/src/project_panel.rs b/crates/project_panel/src/project_panel.rs
index 3ce53b8418df4d7d94be494d37a7c03898d0cf27..9657f13a62491ace717880660338b77db527f540 100644
--- a/crates/project_panel/src/project_panel.rs
+++ b/crates/project_panel/src/project_panel.rs
@@ -1375,7 +1375,7 @@ impl ProjectPanel {
     ) {
         // By keeping entries for fully collapsed worktrees, we avoid expanding them within update_visible_entries
         // (which is it's default behavior when there's no entry for a worktree in expanded_dir_ids).
-        let multiple_worktrees = self.project.read(cx).worktrees(cx).count() > 1;
+        let multiple_worktrees = self.project.read(cx).visible_worktrees(cx).count() > 1;
         let project = self.project.read(cx);
 
         self.state
diff --git a/crates/project_panel/src/project_panel_tests.rs b/crates/project_panel/src/project_panel_tests.rs
index 5e2c189ca8048f05371fa759961990ae97878d7f..9dd1a025d697bef63b8a2f7c24a5aec021a44cb5 100644
--- a/crates/project_panel/src/project_panel_tests.rs
+++ b/crates/project_panel/src/project_panel_tests.rs
@@ -3561,6 +3561,68 @@ async fn test_collapse_all_entries_with_collapsed_root(cx: &mut gpui::TestAppCon
     );
 }
 
+#[gpui::test]
+async fn test_collapse_all_entries_with_invisible_worktree(cx: &mut gpui::TestAppContext) {
+    init_test_with_editor(cx);
+
+    let fs = FakeFs::new(cx.executor());
+    fs.insert_tree(
+        "/project_root",
+        json!({
+            "dir_1": {
+                "nested_dir": {
+                    "file_a.py": "# File contents",
+                },
+                "file_1.py": "# File contents",
+            },
+            "dir_2": {
+                "file_1.py": "# File contents",
+            }
+        }),
+    )
+    .await;
+    fs.insert_tree(
+        "/external",
+        json!({
+            "external_file.py": "# External file",
+        }),
+    )
+    .await;
+
+    let project = Project::test(fs.clone(), ["/project_root".as_ref()], cx).await;
+    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
+    let cx = &mut VisualTestContext::from_window(*workspace, cx);
+    let panel = workspace.update(cx, ProjectPanel::new).unwrap();
+    cx.run_until_parked();
+
+    let (_invisible_worktree, _) = project
+        .update(cx, |project, cx| {
+            project.find_or_create_worktree("/external/external_file.py", false, cx)
+        })
+        .await
+        .unwrap();
+    cx.run_until_parked();
+
+    assert_eq!(
+        visible_entries_as_strings(&panel, 0..10, cx),
+        &["v project_root", "    > dir_1", "    > dir_2",],
+        "invisible worktree should not appear in project panel"
+    );
+
+    toggle_expand_dir(&panel, "project_root/dir_1", cx);
+    cx.executor().run_until_parked();
+
+    panel.update_in(cx, |panel, window, cx| {
+        panel.collapse_all_entries(&CollapseAllEntries, window, cx)
+    });
+    cx.executor().run_until_parked();
+    assert_eq!(
+        visible_entries_as_strings(&panel, 0..10, cx),
+        &["v project_root", "    > dir_1  <== selected", "    > dir_2",],
+        "with single visible worktree, root should stay expanded even if invisible worktrees exist"
+    );
+}
+
 #[gpui::test]
 async fn test_new_file_move(cx: &mut gpui::TestAppContext) {
     init_test(cx);