ui/cocoa: Stop application when window closed. #15

ui/internal/cocoa/window.go

@@ -16,6 +16,7 @@ const (
 	didMove          WindowEvent = 1
 	didMiniaturize   WindowEvent = 2
 	didDeminiaturize WindowEvent = 3
+	shouldClose      WindowEvent = 4
 )
 
 // EventHandler - handler functions that accepts the updated window as parameter
@@ -201,6 +202,10 @@ func (wnd *Window) OnDidMove(fn EventHandler) {
 	wnd.callbacks[didMove] = fn
 }
 
+func (wnd *Window) OnShouldClose(fn EventHandler) {
+	wnd.callbacks[shouldClose] = fn
+}
+
 //export onWindowEvent
 func onWindowEvent(id C.int, eventID C.int, x C.int, y C.int, w C.int, h C.int) {
 	windowID := int(id)

ui/internal/cocoa/windowdelegate.m

@@ -5,6 +5,7 @@
 const int DID_MOVE_EVENT = 1;
 const int DID_MINIATURIZE_EVENT = 2;
 const int DID_DEMINIATURIZE_EVENT = 3;
+const int SHOULD_CLOSE_EVENT = 4;
 
 @implementation WindowDelegate
 
@@ -36,6 +37,16 @@ - (void)windowDidDeminiaturize:(NSNotification *)notification {
                DID_DEMINIATURIZE_EVENT);
 }
 
+- (BOOL)windowShouldClose:(NSWindow *)sender {
+  // TODO: In the future, we should send the event to Go and let Go decide
+  //       and allow the Go side to optionally trigger some alternative
+  //       behavior for secondary windows.
+  // triggerEvent([self goWindowID], sender, @"windowShouldClose",
+  //              SHOULD_CLOSE_EVENT);
+  [NSApp stop:sender];
+  return YES;
+}
+
 @end
 
 void triggerEvent(int goWindowID, NSWindow *movedWindow, NSString *eventTitle,

ui/window_cocoa.go

@@ -40,6 +40,10 @@ func (w *Window) Update(nextComponent spot.Control) bool {
 func (w *Window) Mount(parent spot.Control) any {
 	w.ref = cocoa.NewCenteredWindow(w.Title, w.Width, w.Height)
 	w.ref.SetAllowsResizing(w.Resizable)
+	// w.ref.SetCloseButtonEnabled(false)
+	// w.ref.OnShouldClose(func(wnd *cocoa.Window) {
+	// 	fmt.Println("Window closed")
+	// })
 
 	w.ref.MakeKeyAndOrderFront()
 	w.ref.AddDefaultQuitMenu()