mac: Fix CEF message pump during modal tracking (see #443)

magreenblatt · magreenblatt · commit cffac273e4f9 · 2026-01-31T13:10:10.000-05:00
Use performSelector:onThread:withObject:waitUntilDone:modes: with both
NSDefaultRunLoopMode and NSEventTrackingRunLoopMode to ensure CEF's
message loop work is processed during modal operations like window
resize and close.
diff --git a/native/util_mac.mm b/native/util_mac.mm
@@ -456,9 +456,12 @@ void CefShutdownOnMainThread() {
 }
 
 void CefDoMessageLoopWorkOnMainThread() {
-  [[CefHandler class] performSelectorOnMainThread:@selector(doMessageLoopWork)
-                                       withObject:nil
-                                    waitUntilDone:NO];
+  [[CefHandler class]
+      performSelector:@selector(doMessageLoopWork)
+             onThread:[NSThread mainThread]
+           withObject:nil
+        waitUntilDone:NO
+                modes:@[ NSDefaultRunLoopMode, NSEventTrackingRunLoopMode ]];
 }
 
 void SetVisibility(CefWindowHandle handle, bool isVisible) {

Original file line number	Diff line number	Diff line change
`@@ -456,9 +456,12 @@ void CefShutdownOnMainThread() {`
`456`	`456`	`}`
`457`	`457`
`458`	`458`	`void CefDoMessageLoopWorkOnMainThread() {`
`459`		`- [[CefHandler class] performSelectorOnMainThread:@selector(doMessageLoopWork)`
`460`		`- withObject:nil`
`461`		`- waitUntilDone:NO];`
	`459`	`+ [[CefHandler class]`
	`460`	`+ performSelector:@selector(doMessageLoopWork)`
	`461`	`+ onThread:[NSThread mainThread]`
	`462`	`+ withObject:nil`
	`463`	`+ waitUntilDone:NO`
	`464`	`+ modes:@[ NSDefaultRunLoopMode, NSEventTrackingRunLoopMode ]];`
`462`	`465`	`}`
`463`	`466`
`464`	`467`	`void SetVisibility(CefWindowHandle handle, bool isVisible) {`