[IPython-dev] More widget feasibility ideas

[Nicholas Bollweg]

Hey, no problem: the API is definitely changing a lot right now, so it's a
bit of a moving target...

On Wed, Oct 29, 2014 at 7:40 PM, Adam Hughes <hughesadam87 at gmail.com> wrote:

> Ah ok.  Thanks will try to get up to speed so not always asking such
> simple questions
> On Oct 29, 2014 7:06 PM, "Nicholas Bollweg" <nick.bollweg at gmail.com>
> wrote:
>
>> Yes, add_class was replaced with _dom_classes. It should actually
>> simplify a lot of your code!
>>
>> On Wed, Oct 29, 2014 at 6:53 PM, Adam Hughes <hughesadam87 at gmail.com>
>> wrote:
>>
>>> Hi Nicholas,
>>>
>>> After I updated to the recent dev, part of our code broke.  It's from
>>> the part that you showed to us, so I figured you might be aware of what has
>>> been changed:
>>>
>>> AttributeError                            Traceback (most recent call last)<ipython-input-8-70485b3b7990> in displayed(self, _)    113     # -----    114     def displayed(self, _):--> 115         self.add_class("col-xs-9")    116         # THIS IS WHERE DRAW IS CALLED AFTER DISPLAYS CHANGE    117         self.draw()
>>> AttributeError: 'Spectrogram' object has no attribute 'add_class'
>>>
>>>
>>>
>>> On Tue, Oct 28, 2014 at 12:07 AM, Adam Hughes <hughesadam87 at gmail.com>
>>> wrote:
>>>
>>>> Ah gotcha!  Thanks for clearing that up, much appreciated!  I guess my
>>>> dev is way older than I recall.
>>>>
>>>> On Mon, Oct 27, 2014 at 10:45 PM, Nicholas Bollweg <
>>>> nick.bollweg at gmail.com> wrote:
>>>>
>>>>> For reference, I see this:
>>>>>
>>>>> [image: Inline image 3]
>>>>>
>>>>> ah, the _dom_classes may have been more recent than that. Here's the
>>>>> change, landed sept 23: https://github.com/ipython/ipython/pull/6235
>>>>>
>>>>> you may have to go back to something like:
>>>>>
>>>>> w = HTML("text")
>>>>>> w.on_displayed(lambda x: w.add_class("alert-warning")
>>>>>>
>>>>>
>>>>> When you want to change it, you'd then have to:
>>>>>
>>>>> w.remove_class("alert-warning")
>>>>>> w.add_class("alert-success")
>>>>>>
>>>>>
>>>>> In the new core widgets, a traitlet manages these directly:
>>>>>
>>>>> https://github.com/ipython/ipython/blob/master/IPython/html/widgets/widget_button.py#L36
>>>>> And all the class adding/removing is done on the client side.
>>>>>
>>>>> In my bootstrap librar <https://github.com/bollwyvl/ip-bootstrap>y i
>>>>> have been tinkering with, I did the same, though a little differently.
>>>>>
>>>>> On Mon, Oct 27, 2014 at 8:55 PM, Adam Hughes <hughesadam87 at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Yes, but when you do this in your notebook, does it appear in a
>>>>>> different colors?  Mine looks like plain text.  IE I literally see:
>>>>>>
>>>>>> info
>>>>>> danger
>>>>>> warning
>>>>>> success
>>>>>>
>>>>>> In my output cell, instead of pretty colors like the example on the
>>>>>> bootstrap link.  Using about a 2week-old version of 3.0 dev, if that
>>>>>> matters.
>>>>>>
>>>>>> On Mon, Oct 27, 2014 at 8:50 PM, Nicholas Bollweg <
>>>>>> nick.bollweg at gmail.com> wrote:
>>>>>>
>>>>>>> right, you'd switch it out to another context:
>>>>>>>
>>>>>>> from IPython.html import widgets
>>>>>>>> from IPython.display import display
>>>>>>>> for context in ["info", "danger", "warning", "success"]:
>>>>>>>>     display(widgets.HTML(value=context, _dom_classes=["alert",
>>>>>>>> "alert-" + context]))
>>>>>>>>
>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>
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>>>>>>
>>>>>
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>>>>
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