Improving swing's JFileChooser?

[tferr]

There are several issues here about the JFileChooser, including #100. However, the suggestions on improving JFileChooser frequently end-up with replacing it with a native File chooser. Native dialogs are not optimal for us:

• Second-party libraries seem focused on particular platforms (mainly Windows OS!?). We need equal support for Windows. Linux and MacOS
• We rely on dialogs (arguably these pertain to older code) with tile bar that explain the file(s) to be chosen (e.g., some versions of MacOS native choosers don't allow for this)

for these reasons, relying on JFileChooser is (so far at least) the most sensible choice for our needs. We've made some minor tweaks to JFileChooser - by extending some FlatLaf code - that include:

1. Drag & drop support from native file explorer
2. Option to toggle invisible files
3. Option to refresh/reload the file list (useful for remote servers)
4. Option to reveal the active path in native file explorer
5. Option to filter the file list by keyword

It looks like this:

The code is here. It could be re-use/recycled in anyway you see fit.

Opening this in case this is of interest to the project (feel free to close it, if otherwise).