Unable to filter directories on GTK file dialogs.

[cmyr]

This was reported in runebender (linebender/runebender#108); apparently the patch that added file type filtering to gtk (#903?) means we're no longer able to open directories, even with the select_directories option set.

[luleyleo]

Selecting directories works perfectly fine when not using allowed_types.

Using allowed_types + select_directories is 'broken' indeed, but I do not think we can do anything about that on our end.

The problem with the combination is that you can only navigate bookmarks, but not 'go into' any directories in the dialog because they are filtered out. But if you have a bookmark that gets you to a folder containing a my_font.ufo directory than that works perfectly fine (it is selectable).

Maybe we should just disable filtering directories for now? (on GTK)

[xStrom]

I think the GTK implementation can ignore allowed_types when select_directories is true. This would put it on bar with Windows, where Windows itself will ignore allowed_types in that case.

There is no way (using the standard file dialog without extensions) to filter directories on Windows, so I don't think this is a behavior that druid can provide in a cross-platform way.

[cmyr]

That sounds reasonable to me.