Someone did create exactly what you want as an extension but did not post the code here or on GitHub.
I never got a copy so someone else will have to post the code or recreate the extension.
UPDATE: He came back and posted it here
Someone did create exactly what you want as an extension but did not post the code here or on GitHub.
I never got a copy so someone else will have to post the code or recreate the extension.
UPDATE: He came back and posted it here