Merge pull request #132 from kishikawakatsumi/ex

Fix crash when collaplse/expand quickly
kishikawakatsumi · Sep 17, 2024 · dd60326 · dd60326
2 parents d6e134a + 2a4c864
commit dd60326
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/Examples/FileBrowser/FileBrowser (macOS)/FilesViewController.swift b/Examples/FileBrowser/FileBrowser (macOS)/FilesViewController.swift
@@ -16,6 +16,7 @@ class FilesViewController: NSViewController {
   let rootPath: String
 
   private lazy var dirTree = DirectoryStructure(server: serverNode.path, path: path, client: client)
+  private let semaphore = Semaphore(value: 1)
 
   private var tabGroupObserving: NSKeyValueObservation?
   private var scrollViewObserving: NSKeyValueObservation?
@@ -588,6 +589,9 @@ extension FilesViewController: NSOutlineViewDelegate {
     Task { @MainActor in
       dirTree.useCache = false
 
+      await semaphore.wait()
+      defer { Task { await semaphore.signal() } }
+
       await dirTree.expand(fileNode, outlineView)
       updateItemCount()
     }