basic widgets not working

[minrk]

cc @SylvainCorlay

basic widgets don't seem to be working right now:

from ipywidgets import *
IntSlider(5)

gives Error displaying widget. js console shows:

TypeError: this.handle.stop is not a function. (In 'this.handle.stop(1,1)', 'this.handle.stop' is undefined)

TypeError: this.handle.stop is not a function. (In 'this.handle.stop(1,1)', 'this.handle.stop' is undefined)
_refreshValue — slider.js:654
https://unpkg.com/thebelab
_refresh — slider.js:106
https://unpkg.com/thebelab
_create — slider.js:97
https://unpkg.com/thebelab
_createWidget — widget.js:340
https://unpkg.com/thebelab
https://unpkg.com/thebelab
each — jquery.slim.js:354
https://unpkg.com/thebelab
render — widget_int.js:127
https://unpkg.com/thebelab
promiseReactionJob

Maybe a version mismatch?

Reported by @lukasheinrich

[SylvainCorlay]

I am afk but was just testing on my phone. The Label appears to work but not the slider.

I cannot troubleshoot right now. Could it be an issue with the jqueryui version? Cc @jasongrout

[lukasheinrich]

is this the property that this.handle.stop refers to?
https://github.com/jupyter-widgets/ipywidgets/blob/08ac3244d84c79b6943a3d2792b076f71967fb04/packages/controls/src/widget_int.ts#L109

[SylvainCorlay]

Yes, The slider is the only widget making use of jqueryui and "stop" refers to a method of the jqueryui slider handle.

We need to check if there was a breaking change in jqueryui and the requirement in package.json for @jupyter-widgets/controls.

[SylvainCorlay]

@minrk I have opened a PR fixing this. The issue came from the use of the "slim" version of jquery.

[minrk]

@SylvainCorlay thanks for finding and fixing it! Published 0.3.3 with this (and your restart button).

[lukasheinrich]

great! works on minrk.github.io now that the package is updated on npm. Thanks!

[lukasheinrich]

actually interact(...) seems to still break, while the IntSlider works. Tested on minrk.github.io and locally with an updated 0.3.3

[SylvainCorlay]

Interact will need some work with the Output widget, which is a bit more involved.

[SylvainCorlay]

@SylvainCorlay thanks for finding and fixing it! Published 0.3.3 with this (and your restart button).

Thanks @minrk I will push out an example with C++ tomorrow :)

[lukasheinrich]

@SylvainCorlay can you give some detail what kind of work will be needed, we would like to contribute to making sliders etc work.

[SylvainCorlay]

So all basic widgets should be working on thebelab.

The interact function depends on Output widget needs to be implemented for thebelab. The output widget implementation is different on jupyterlab, or the classic notebook and will likely be closer to that of jupyterlab here.

[lukasheinrich]

thanks @SylvainCorlay. I see an output widget being implemented here https://github.com/minrk/thebelab/blob/master/src/output.js . Does this just need to be extended?