[Wayland-bugs] [Bug 97333] Missing feature for remote desktop and virtual machine software: keyboard grabbing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97333

            Bug ID: 97333
           Summary: Missing feature for remote desktop and virtual machine
                    software: keyboard grabbing
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: wayland
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: frdsktp at genodeftest.de

One main difference between x11 and wayland is that in x11 all applications
receive all input whereas in wayland the compositor receives input and decides
which application may receive it. This causes a major issue with application
which need to grab keyboard input for running or showing a nested desktop. This
affects e.g. GUI virtual machines (SPICE clients), RDP clients, VNC clients,
nested kwin/gnome-shell/whatever. Without giving these wayland clients the
ability to grab input, they will not be able to handle keys which are also
global key bindings in your wayland compositor, e.g. Alt+Tab or the Super key.

Games might also be affected, I don't know that for sure.

I'm posting this here to raise attention because
1. to fix this we need another protocol (extension)
2. this issue can't be fixed in a single application, it needs the whole stack
(wayland library, compositors, affected applications) to change

IMHO, this is the biggest important feature that's still missing for wayland to
be ready for production.

See also:
https://bugzilla.redhat.com/show_bug.cgi?id=1285770
https://lists.fedoraproject.org/archives/list/desktop@lists.fedoraproject.org/thread/BBPOOC4GVBJXHLKSSFLGERG6GYAU6M6U/

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