How to solve GTMOAuth2WindowController problem with Rest mode

[Z Dragon]

Hi, sir
In my previous project, I used GTMOAuth2WindowController as the login interface. And I can get the error message that the Controller is closed in the following way.
SEL theSel = @selector(windowController:finishedWithAuth:error:);
[windowController signInWindowModalForWindow:self.superWindow delegate:self finishedSelector:theSel];

However, the new rest method just opens a web page to log in. my question is
If the user closes the web page during the login process, can the event be obtained?

[Z Dragon]