In Google Chrome, when a page's child page open the print modal (i.e. window.print() or ctrl+P), the parent page's Ajax calls are completely blocked. I'm wondering how to detect this from parent page.
Once I can detect that my Ajax calls are blocked on my parent page, I can tell the user to close that print modal on child page so that they can use Ajax again on parent page.
Related Info about Chrome's bug:
Chrome browser unable to make a server call when print preview is opened
Google Chrome blocks ajax requests when print preview is opened on child window
https://code.google.com/p/chromium/issues/detail?id=139706