glom: use native file dialog for Quartz

[m.rick@…]

Do you think the Quartz build could integer this native dialog? It's a small piece of code to enhance GTK applications and give them native dialogs windows. It is useless for Linux, but can be interesting for Mac users.

​https://github.com/mlabbe/nativefiledialog

Known Limitations I accept quality code patches, or will resolve these and other matters through support.

No support for Windows XP's legacy dialogs such as GetOpenFileName. No support for file filter names -- ex: "Image Files" (*.png, *.jpg). Nameless filters are supported, though. No support for selecting folders instead of files. On Linux, GTK+ cannot be uninitialized to save memory. Launching a file dialog costs memory. I am open to accepting an alternative nfd_zenity.c implementation which uses Zenity and pipes.

I ported a native experimental stand-alone build of Glom that works almost well. It must be stored in the /Applications folder and unsigned applications must be allowed for the first launch. ​https://www.dropbox.com/s/y78qt7z3ljzzh6n/Glom-1.28.5-postgis.7z?dl=0

[mascguy (Christopher Nielsen)]

Given how old this ticket is, it's possible that this is already the case with the latest release of glom, gtk3, etc.

But we should test a Quartz install, to see whether that's the case.