GTK_USE_PORTAL=1 is ignored by Sublime Text 3

[ghost]

Description

Sublime Text 3 uses horrendous GTK default picker, when the environmental variable forces to use one provided by current xdg-desktop-portal, in my case KDE file picker.

Steps to reproduce

1. Set GTK_USE_PORTAL=1 in /etc/profile.d/xdg.sh
2. chmod +x /etc/profile.d/xdg.sh .
3. Use KDE, install xdg-desktop-portal-kde.
4. Reboot to apply changes.
5. Launch applications and launch their file pickers.
6. Only Sublime Text 3 doesn't launch KDE file picker.

Expected behavior

KDE File picker shows up.

Actual behavior

I get the GNOME/GTK file picker.

Any application(including firefox and other gtk apps on the left). Sublime Text 3 on the right.

Environment

• Build: 3211
• Operating system and version: Arch Linux
• [Linux] Desktop Environment and/or Window Manager: KDE 5.21.4

[BenjaminSchaaf]

Fixed in build 4103.

[Nantris]

@BenjaminSchaaf there's still the issue of Sublime Text opening the picker to a default folder rather than the folder than contains the currently opened file as occurs with the GTK picker and on other operating systems.

Can this be remedied? It's the only reason we haven't implemented GTK_USE_PORTAL=1 - but it would be a huge improvement in our workflow if we could resolve that.

I believe it's related to the "show on startup" setting:

Edit: Actually, never mind - it seems to make no difference

[BenjaminSchaaf]

@slapbox we use the same GTK API to set the initial directory regardless of whether the builtin dialog or portal is used. If that's not working that's an issue either with GTK or your setup.

[Nantris]

Presumably it's a GTK_USE_PORTAL limitation - but immense sadness. If there's anything that can be done to remedy this in the future, it would be a huge workflow improvement for us.

[BenjaminSchaaf]

@slapbox Nope, the org.FreeDesktop.portal.FileChooser interface supports current_folder and that is also set by gtk: https://github.com/GNOME/gtk/blob/main/gtk/gtkfilechoosernativeportal.c#L406.

[Nantris]

Thanks for the reply @BenjaminSchaaf.

I can't imagine that there's anything wrong with our GTK setup. It's an entirely stable development machine with only minimal customizations made.

The file picker always defaults to the directory that was last opened when we use GTK_USE_PORTAL.

Does anyone on the Sublime team use KDE who would be able to do an independent test? If so, on Kubuntu 22.10, the file that needs to be modified is ~/.pam_environment

Or is there anything else you would recommend we try?

I know this is a bit beyond the scope of the issue tracker so I understand if you can't offer any additional advice. Thanks for reading!

[BenjaminSchaaf]

Sounds like it could be an issue with: https://invent.kde.org/plasma/xdg-desktop-portal-kde, might be best to ask there.

[Nantris]

Thanks again for your help @BenjaminSchaaf!

I found the most relevant issue here: flatpak/xdg-desktop-portal#874

For whatever little a thumbs-up is worth, I'd appreciate if you could add one to that issue!