I am looking into developing a Jenkins plugin to improve the GUI for the “Build periodically” option (among other things) in the project configuration.
I would like to create additional form elements in this section to essentially serve as a crontab generator which automatically sets the cron schedule descriptor, something like the below website:
From what I could see while completing the plugin tutorial, it seems like plugins can only add build steps, and there does not seem to be any framework for modifying the “Build Triggers” section of the project configuration. Is that true?