Take me back to the start

[Johan Enell]

If I have made en error when adding values to the plugin job parameters I get a page telling me that I've tried to add invalid data. The page gives me the options Back and Close. The Back button takes me to the Finish page where I can start my plugin. But since I haven't changed the values of the parameters I get to the invalid data page.

The back button should let me re enter the parameter values. The best solution (from the users perspective) would be if the values from the previous configuration are left and the user is notified which value he should change.

[Nicklas Nordborg]

It is the responsibility of the plug-in to validate the parameters and set a correct error message. If the plug-in does that the user will remain on the parameter input page an get a chance to correct the invalid parameters. Once on the "Finish" page it is not possible to go back an re-enter parameter values. The job configuration must be re-started from the beginning. In this case, the Back button should never really not be activated, but the error handling routines doesn't support that.

[Nicklas Nordborg]

I found a bug in the core which results in this user-unfriendly behavior. See #780.