A possible bug: Cannot copy/paste to/from KDE Applications to Eclipse in Wayland session (qt_wayland_clipboard_fix)

[the-snowwhite]

          Closing as this has been fixed in latest gtk3 and changing swt gtk3 clipboard implementation has to potential to destabilize things and gtk4 port has it working with the new approach already.

Originally posted by @akurtakov in #421 (comment)

[akurtakov]

Interesting. I have tried coping from Eclipse to Kate (both running under wayland) and it worked but kate to eclipse didn't.

[the-snowwhite]

@akurtakov Yes thanks that is exactly my point.
I'm running kde neon where it is not possible to copy either way between kate and eclipse in a wayland session.
So I recompiled the newest gtk version: 3.24.38 (from mantic) and installed.
That made it possible to copy from eclipse to kate, but not the other way.

[the-snowwhite]

I have also just tested Kubuntu 22.10 and Fedora KDE Plasma Desktop 38, same issue.

[akurtakov]

I would not have time to look into this one any time soon so we need someone to step up and work on a fix.

[the-snowwhite]

OK ... I'm not experienced with eclipse code so I do not know what more I can do right now.
Thanks for acknowledging the Issue :-)

[the-snowwhite]

Inspired by a comment in this thread I figured out a small workaround:
install the wl-clipboard package and the run this command before pasting to eclipse:

wl-paste -n -t text/plain | wl-copy -t STRING

[the-snowwhite]

In hope of the KDE-Team being able to provide a wayland lecgacy solution like Gnome-gtk I have opened a bug repport there:
https://bugs.kde.org/show_bug.cgi?id=476522

[mickaelistria]

Thanks for the report, this comment helps "the issue essentially boils down to Eclipse not supporting Wayland clipboard content types (RFC-1341 types).". Do you think you can help with that?

[the-snowwhite]

@mickaelistria Testing out my bugfix is now completed with success
#858
The initial test commit is currently residing in this branch: (dont know if It would be possible to backport the fix)

master...the-snowwhite:eclipse.platform.swt:wayland_qt_paste_fix_R4.29

The initial commit for master is here:

https://github.com/eclipse-platform/eclipse.platform.swt/compare/master...the-snowwhite:eclipse.platform.swt:wayland_qt_paste_fix?expand=1

What I found out in all my testing is that It does exactly what promised:
running in both gtk v3.24.33 and gtk v3.24.38 it is possible to paste into eclipse from all applications that only present
RFC-1341 types (so far only text/plain;charset=utf-8) in the clipboard under a wayland session.
I have also just tested pasting the danish special characters åæø and that went fine also.
...
Lastly I looked into if I would be able to get the copy to wayland clipboard functionality to work under gtk v3.24.33.
So far no luck.
That seems like a much more complicated issue...
So I would like this bugfix to stand alone as a paste from wayland only fix.
(the copy to wayand to eclipse issue is anyhow fixed upstream)

[mickaelistria]

OK. Can you please create a PR for master?
We usually don't backport much in Eclipse Platform because we don't build older branches, so backporting shows no strong benefit.

[the-snowwhite]

@mickaelistria
OK --> #861