Provide a mechanism for attaching filters to file chooser widgets #45
Description
One nice thing about many file choosers (e.g., Swing's) is the ability to restrict which files can be selected. This is nice for opening and saving data, to show only the supported file formats.
Currently, our FileWidget implementations have no such capability. The infrastructure must be extended to provide it.
Migrated-From: http://trac.imagej.net/ticket/1080