Idea for a new javafx styled Group Dialog:
@tobiasdiez WDYT?
(My first try with the scence builder)

Looks definitely better than the old dialog, good job.
text = "%Color" then the text should be translated automatically (maybe it wasn't % as modifier...just have a look at the other dialogs) Thanks that you attack this "Baustelle" 馃槃
Found a nice idea for a Wizard like thing:
http://www.guigarage.com/2014/05/datafx-tutorial-3/
I have now separated the dialog in two parts


I like it! Maybe still move the "Options" to the second page...not sure through. @JabRef/developers what you do you think?
In my opinion the icon and color can be put on the same line (with the icon first).
Regarding Icon I had the idea to integrate an ImageView component with a File Chooser, so that user direclty can open the icon/image from their file system
Right now the icon only allows a string (the identifier in the materialdesigns font) and not a path. Thus it is probably preferable to show a list of (predefined) icons instead of a file chooser.
Yes, I will take this into account and maybe probide a list with images/icons to browse from
So, my current idea is to use an auto complete text box (and I hope it will work) for searching the icons like it is possible on the website
http://fontawesome.io/icons/

Is this Icon stuff really worth the effort?
I would also prefer to have only a single dialog with the ability to switch from one type to another during creation of a group...
@matthiasgeiger That icon stuff is just some nice to have stuff.
My idea is that when you add a group this wizard is shown and when you right click on the group -> Edit defintion (name etcs ) and switch group type. Which then just would select the right dialog page of the wizard - with the ability to go back/forward to the other page.
In my opinion this is useful as I sometimes just want to edit the name of a group or the type.
As soon as the new javafx dialog is ready, the swing compatibility workaround introduced in https://github.com/JabRef/jabref/pull/2727/files#diff-6c6d2c1a2528d4dc593f3844f5c680d2R129 should be removed again.
Hi guys, is this one still available? I would love to fix some issues for you!
@Clarke92 Hey, thanks for the interesting in contributing! Yes, you can surely take my PR where I added the fxml files as a starting point: https://github.com/JabRef/jabref/pull/2643
To get started, have a look at our Contributing guide.
Since this dialog is now converted to JavaFX, there is no real urge to redesign it (PRs in this direction are of course welcome).