Attempt to fix communication issues

[mattpap]

Early WIP. There's a lot I don't understand and a lot that doesn't work. Moreover ipywidgets 8.0.5 breaks things even more.

[philippjfr]

@mattpap Can you rebase and merge this and then tag a dev release? In combination with changes I made in Panel this works fine for me, even with 8.0.6. Happy to help fix this for pure-bokeh users once the Panel 1.0 rush is over.

[mattpap]

Can you rebase and merge this and then tag a dev release? In combination with changes I made in Panel this works fine for me, even with 8.0.6. Happy to help fix this for pure-bokeh users once the Panel 1.0 rush is over.

This still doesn't work for me in Bokeh (with ipywidgets 8.0.6 at all and with 8.0.4 the same as with original changes in this PR, i.e. only one way). I rebased and will publish a release soon.

[mattpap]

@philippjfr, what specifically were you testing in panel?

[philippjfr]

import panel as pn

import ipywidgets as ipw

pn.extension('ipywidgets')

slider = ipw.IntSlider(min=0, end=14)

md = pn.pane.Markdown()

button = pn.widgets.Button(name='Reset')

def reset(event):
    slider.value = 0

button.on_click(reset)

def update_zoom(event):
    if isinstance(event['new'], int):
        md.object = str(event['new'])
    elif 'value' in event['new']:
        md.object = str(event['new']['value'])

slider.observe(update_zoom)

pn.Column(ipw.__version__, button, slider, md).servable()

Depends on holoviz/panel#4716

[ndmlny-qs]

I can confirm that this is working for me as well. I also removed the src/ipywidgets_bokeh/webpack.ts module and it works as expected.

no-webpack-module.webm

env

name: panel-upgrade-releases
channels:
  - conda-forge
  - pyviz/label/dev
dependencies:
  - python<3.11
  - nodejs # for ipywidgets_bokeh build
  - pip
  - ipywidgets
  - pyviz/label/dev::panel==1.0.0rc1
  - ipython_genutils
  - ipyvolume