WebUIDelegate methods not called

问题

For some reason the following webview UI delegate methods are never called. Tried opening, clicking, interacting with webview to trigger the delegate calls and nothing works.

- (void)webViewFocus:(WebView *)sender {
    NSLog(@"focusing %@", sender);
}

- (void)webViewUnfocus:(WebView *)sender {
    NSLog(@"unfocusing %@", sender);
}

- (BOOL)webViewIsStatusBarVisible:(WebView *)sender {
    return YES;
}

- (void)webView:(WebView *)sender setStatusBarVisible:(BOOL)visible {
    NSLog(@"%@  %d", sender, visible);
}

I made sure the the delegate is correctly hooked up and can confirm that when user wants to open a new window, - (WebView *)webView:(WebView *)sender createWebViewWithRequest:(NSURLRequest *)request WebUIDelegate method is correctly called. Any ideas?

来源：https://stackoverflow.com/questions/15623477/webuidelegate-methods-not-called