Make xdg-desktop-portal-kde part of Plasma release

Harald Sitter sitter at
Wed Apr 19 15:05:23 UTC 2017


On Wed, Apr 19, 2017 at 2:08 PM, Jan Grulich <jgrulich at> wrote:
> Hi,
> I would like to request/discuss inclusion of xdg-desktop-portal-kde [1] into
> Plasma to have it released with Plasma 5.10 and so on.
> What is xdg-desktop-portal-kde:
> It's a KDE implementation of Flatpak portals backend [2], currently with
> support of AppChooser, FileChooser, Notification and Print portals.
> How it works:
> An app running in sandbox communicates with outside world using
> org.freedesktop.portal.Foo interfaces (each of them is one portal). These
> interfaces are registered by xdg-desktop-portal (on DBus as
> org.freedesktop.portal.Desktop service). This requires support in library to
> make widgets etc. do calls to o.f.p.Foo interfaces instead of doing what they
> usually do. This is already implemented in KNotifications and for Qt part we
> have flatpak platform plugin. Then xdg-desktop-portal calls desktop specific
> implementations to present native dialogs and have proper integration. That's
> where xdg-desktop-portal-kde takes place. It exposes it's implementation on
> DBus as org.freedesktop.impl.portal.desktop.kde service. Then in case of KDE
> when user requests a file dialog from a sandboxed application, Qt platform
> plugin does a dbus call to xdg-desktop-portal instead of showing a dialog and
> xdg-desktop-portal forwards this to our backend implementation and we show a
> native dialog to the user, this time this dialog is not running in sandbox and
> user can open a file which is outside the sandboxed application. Same way it
> works with opening URLs, notifications etc.
> What do you think?
> [1] -
> [2] -
> Regards,
> Jan
> --
> Jan Grulich,
> Software Engineer, Desktop Team
> Red Hat

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