Options should be inactive or show Error or Information Box #4795
Description
JabRef version 5.0
I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists-
Steps to reproduce the behavior:
(1) Open JabRef 5.0 and go to Tools option.
(2) Click on the link 'Push entries to external application(TeXstudio)' which comes as active.
(3) Nothing happens.
Actual behavior: Nothing happens on clicking 'Push entries to external application(TeXstudio)' option.
Workaround: open JabRef 5.0, 'Push entries to external application(TeXstudio)' option shouldn't be active or should show the error or information box like it shows when we add a new Library with no entry which results in 'This operation requires one or more entries to be selected'.
Why it matters: It's a common U.I. bug that needs to be fixed. In this P.R. I will suggest more options that could be inactive or show error or information box.