[Seaside] Trigger a method from javascript

[Paul DeBruicker]

using a combination of  JQueryInstance>>#on:do: &  JQAjax>>#callback:value:
can probably do what you want.    See the jQuery docs for how on() works and
what it can return if you haven't .

https://api.jquery.com/on/


e.g.

.

html document
    addLoadScript:
      (html jQuery expression:'body') 
              on: #('myEvent')
              do:((html jQuery ajax 
                       callback:[:val | self handleJSEvent:val] 
                              value:('return event' asFunction: #('event'));
                   onSuccess: (self renderViewChangesOn: html))


and then your method to get changed data back to the DOM from that could be


renderViewChangesOn: html
    ^ html jQuery ajax script:[:s | s << self myScriptToUpdateTheDOM: s]



and the #value: portion above can just be a reference to a js variable in
the DOM if you replace it with 

(JSStream on: 'myVariable')


Hope this helps




Pierre Durand wrote
> Hi
> 
> I have a nice UI using Pharo/Seaside ans I’m able to control the program
> flow with AJAX callbacks on the UI but only when there are user actions.
> The are some asynchronous processes in javascript (server connexion, file
> downloads) and I would like to trigger some methods in the pharo code when
> they complete.
> What are the options ? Do i have to trigger some event ? How do I
> read/listen to them ?
> 
> Thanks !
> 
> Pierre
> 
> _______________________________________________
> seaside mailing list

> seaside at .squeakfoundation

> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside





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