Capability.REPLY_FIELD absent on KDE Plasma-6.4.3

[Cynosure-null]

When trying to run DesktopNotifer.get_capabilities() on KDE plasma 6.4.3 using Wayland on Arch linux, the function returns frozenset({<Capability.ICON: 5>, <Capability.ON_CLICKED: 12>, <Capability.SOUND_NAME: 16>, <Capability.TITLE: 2>, <Capability.URGENCY: 4>, <Capability.MESSAGE: 3>, <Capability.BUTTONS: 8>, <Capability.TIMEOUT: 18>, <Capability.SOUND: 14>, <Capability.APP_NAME: 1>, <Capability.ON_DISMISSED: 13>, <Capability.ON_DISPATCHED: 11>}). Note that Capability.REPLY_FIELD is absent even though KDE Plasma supports notification replies.

[samschott]

Desktop-notifier tries to query the capabilities from the notification server or otherwise infers them from available callbacks. Unfortunately, there is no canonical way to express the reply field capability in the Freedesktop spec. So supporting reply fields is a bit more trial and error than following a uniform API.

I don't have access to a KDE machine at the moment. Could you let me know the return value of the server's capabilities? You can get it as follows:

dn = DesktopNotifier()
capabilities = await dn._backend.interface.call_get_capabilities()

[Cynosure-null]

The code:

#! /usr/bin/env python3.11
from desktop_notifier import DesktopNotifier
import asyncio


async def test():
    dn = DesktopNotifier()
    capabilities = await dn._backend.interface.call_get_capabilities()
    print(capabilities)

if __name__ == "__main__":
    asyncio.run(test())

errors out with the message:

Traceback (most recent call last):
  File "./test.py", line 12, in <module>
    asyncio.run(test())
  File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/asyncio/base_events.py", line 654, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "./test.py", line 8, in test
    capabilities = await dn._backend.interface.call_get_capabilities()
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'call_get_capabilities' 

I don't have much experience with python's async so my code might not be right, but interface doesn't seem to be fully working.

[samschott]

Apologies, there is one step missing that I had forgotten about. The following should work:

from desktop_notifier import DesktopNotifier
import asyncio


async def test():
    dn = DesktopNotifier()
    await dn._backend._init_dbus()
    capabilities = await dn._backend.interface.call_get_capabilities()
    print(capabilities)

if __name__ == "__main__":
    asyncio.run(test())

[Cynosure-null]

The response is as follows: ['body', 'body-hyperlinks', 'body-markup', 'body-images', 'icon-static', 'actions', 'persistence', 'inline-reply', 'sound', 'x-kde-urls', 'x-kde-origin-name', 'x-kde-display-appname', 'inhibitions']

[samschott]

Thanks for checking! The return values look good. Reply-field functionality for Linux was added in #226 but I just realised that there was no release yet that includes this. Let me create one.

[samschott]

I've just released v6.2.0. Could you update and try again?

[Cynosure-null]

Sorry, I was off-grid this weekend and I haven't been able to reply recently.
capabilities: frozenset({<Capability.ON_CLICKED: 12>, <Capability.TITLE: 2>, <Capability.MESSAGE: 3>, <Capability.ON_DISPATCHED: 11>, <Capability.ON_DISMISSED: 13>, <Capability.REPLY_FIELD: 9>, <Capability.BUTTONS: 8>, <Capab ility.ICON: 5>, <Capability.SOUND_NAME: 16>, <Capability.SOUND: 14>, <Capability.APP_NAME: 1>, <Capability.TIMEOUT: 18>, <Capability.URGENCY: 4>})

However, no physical reply field is present in the notification. I am running in tmux and with a venv so I'll try without that, but it doesn't seem to have fully fixed the issue.