Move title change timer to SurfaceView and call it from Ghostty.App instead of terminal controllers

macos/Sources/Features/Terminal/BaseTerminalController.swift

@@ -54,10 +54,6 @@ class BaseTerminalController: NSWindowController,
     /// Fullscreen state management.
     private(set) var fullscreenStyle: FullscreenStyle?
 
-    var titleChangeDelay: TimeInterval = 0.075
-    
-    private var titleChangeTimer: Timer?
-
     /// Event monitor (see individual events for why)
     private var eventMonitor: Any? = nil
 
@@ -264,12 +260,9 @@ class BaseTerminalController: NSWindowController,
     func titleDidChange(to: String) {
         guard let window else { return }
         
-        titleChangeTimer?.invalidate()
+        // Set the main window title
-
-        // Set the main window title after a small delay to prevent flicker
-        titleChangeTimer = Timer.scheduledTimer(withTimeInterval: titleChangeDelay, repeats: false) { _ in
         window.title = to
-        }
+
     }
     
     func pwdDidChange(to: URL?) {

macos/Sources/Features/Terminal/TerminalController.swift

@@ -27,8 +27,6 @@ class TerminalController: BaseTerminalController {
     /// The notification cancellable for focused surface property changes.
     private var surfaceAppearanceCancellables: Set<AnyCancellable> = []
 
-    private var toolbarTitleChangeTimer: Timer?
-
     init(_ ghostty: Ghostty.App,
          withBaseConfig base: Ghostty.SurfaceConfiguration? = nil,
          withSurfaceTree tree: Ghostty.SplitNode? = nil
@@ -548,15 +546,9 @@ class TerminalController: BaseTerminalController {
                 // a custom view instead, we need to re-hide it.
                 window.titleVisibility = .hidden
             }
-            
-            toolbarTitleChangeTimer?.invalidate()
-            
-            // Set the toolbar title after a small delay to prevent flicker
-            toolbarTitleChangeTimer = Timer.scheduledTimer(withTimeInterval: titleChangeDelay, repeats: false) { _ in
             toolbar.titleText = to
         }
     }
-    }
 
     override func surfaceTreeDidChange() {
         // Whenever our surface tree changes in any way (new split, close split, etc.)

macos/Sources/Ghostty/Ghostty.App.swift

@@ -948,13 +948,19 @@ extension Ghostty {
                 guard let surfaceView = self.surfaceView(from: surface) else { return }
                 guard let title = String(cString: v.title!, encoding: .utf8) else { return }
                 
+                surfaceView.titleChangeTimer?.invalidate()
+                
+                surfaceView.titleChangeTimer = Timer.scheduledTimer(
+                    withTimeInterval: surfaceView.titleChangeDelay,
+                    repeats: false
+                ) { _ in
                     // We must set this in a dispatchqueue to avoid a deadlock on startup on some
                     // versions of macOS. I unfortunately didn't document the exact versions so
                     // I don't know when its safe to remove this.
                     DispatchQueue.main.async {
                         surfaceView.title = title
                     }
-
+                }
 
             default:
                 assertionFailure()

macos/Sources/Ghostty/SurfaceView_AppKit.swift

@@ -14,6 +14,10 @@ extension Ghostty {
         // to the app level and it is set from there.
         @Published var title: String = "👻"
         
+        // A small delay that is introduced before a title change to avoid flickers
+        var titleChangeDelay: TimeInterval = 0.075
+        var titleChangeTimer: Timer?
+
         // The current pwd of the surface as defined by the pty. This can be
         // changed with escape codes.
         @Published var pwd: String? = nil