Thanks again for your help, this is what the kernel.js ends up looking like:
define(['base/js/namespace'], function(IPython){
console.log("Kernel event handler loaded")
$([IPython.events]).on('kernel_ready.Kernel', function() {
console.log("kernel_ready.Kernel event handler")
});
return {onload:function() {console.log("Setting up kernel event
handler: %o",IPython)}}
})
On Tuesday, August 15, 2017 at 6:19:31 PM UTC-4, Sudarshan Raghunathan
wrote:
>
> Thank you for the quick response! I think I understand the problem and
> will try your suggested approach.
>
> On Tuesday, August 15, 2017 at 6:01:58 PM UTC-4, Matthias Bussonnier wrote:
>>
>> Hi,
>>
>> I think that the reason why yo do not get your event trigerd is that
>> you haven't told `require` that IPython.events needs to be defined
>> before you are called. You need to use something along the lines of
>> teh following
>>
>>
>> define(['base/js/namespace'], function(IPython){
>> // your code, will be run only once base/js/namespace is loaded and
>> with IPython == value return by base/js/namespace executed.
>> // ...
>> })
>>
>>
>> It's far from being easy to understand how these things work, but that
>> should put you on the right track.
>> --
>> M
>>
>> On Tue, Aug 15, 2017 at 2:57 PM, Sudarshan Raghunathan
>> <[email protected]> wrote:
>> > Apologies if this is a Javascript noob question. I have a kernel.js for
>> my
>> > custom kernel that looks like this:
>> >
>> > define(function(){
>> >
>> > var onload = function(){
>> > console.log("I am being loaded")
>> >
>> > $([IPython.events]).on('status_started.Kernel', function() {
>> > console.log("status_started.Kernel")
>> > });
>> >
>> > $([IPython.events]).on('create.Cell', function() {
>> > console.log("create.Cell")
>> > });
>> > }
>> >
>> > return {onload:onload}
>> > })
>> >
>> >
>> > I got the list of Javascript events from this page:
>> >
>> https://jupyter.readthedocs.io/en/latest/development_guide/js_events.html
>> >
>> > When my kernel starts, I can see that onload is being called but none
>> of the
>> > other event handlers seem to be getting triggered for example, when I
>> add a
>> > new cell to the notebook.
>> >
>> > Is kernel.js the correct place to register event handlers and if so, is
>> > there anything I am doing obviously wrong like using obsolete names for
>> the
>> > events?
>> >
>> > Thank you in advance,
>> > Sudarshan
>> >
>> > --
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>
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