Create a new public static class in FileDialogInput called FileFilterInfo. It will contain a list of FileFilters and a list indicating whether the "accept all files" filter of JFileChooser should be used.
Add method public boolean accepts(File file) that checks the file against the FileFilterInfo.
Make FileDialogInput use FileFilterInfo instead of FileFilter.
Make the ResourceImportManagers use the FileFilterInfo instead of just a FileFilter.
These are generally straightforward especially with the FileFilterInfo.accepts method available.
The resource chooser also benefits from this class as it gets simpler. For that purpose the addFilters method was added.
Unresolved
Removing FileFilter constants from FileDialogInput.
Should FileFilterInfo be used in ResourceExportManager. How to handle appending an extension.
How to construct FileFilterInfos? How about using static initializers? I know they aren't nice but otherwise there should be some gigantic expression to create a filter info with 5-6 filters.
