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

[Jonathan Riddell]

On 19 April 2017 at 13:08, Jan Grulich <jgrulich at redhat.com> wrote:
> 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.

Works for me, please put it through the kdereview process

I see that it includes a private header from QtPrintSupport, I'm
against doing this as it breaks any ABI assumptions.

Jonathan