how to get data from widget browser

Jacques Hausser Jacques.Hausser at unil.ch
Wed May 25 11:13:21 EDT 2016


mmm… yes, I’ll try something in that direction (except that in the real case it will be a bit more complicated). A pity this beautiful widget has nothing more straightforward to pick data from webpages (but perhaps it has, well hidden).
Thank you anyway, Mike !

Jacques

> Le 25 mai 2016 à 16:03, Mike Bonner <bonnmike at gmail.com> a écrit :
> 
> Just experimented with things and found a way that works.  There is
> probably a more direct way using do "script" in browser directly, but I
> haven't figured that out yet.  In the interim..
> 
> I put this into the htmltext of a widget
> 
> 
> <html>
> <body>
> Hi!
> <script>
> function testit () {
> liveCode.myJSHandler("myMessage",12345);
> }
> </script>
> </body></html>
> 
> It defines a function testit, that then defines an inline function using
> the liveCode object, handler named myJSHandler
> 
> In my livecode script I have this
> 
> 
> command setHandlers
>   set the javascriptHandlers of widget 1 to "myJSHandler" -- tells the
> widget that when the livecode.myJSHandler() function is able to execute the
> myJSHandler handler in lc
> end setHandlers
> 
> command myJSHandler pMessage,pVar
>   put pMessage & cr & pVar -- A simple example with returned data
> end myJSHandler
> 
> 
> To see it in action, I executed in the message box..
> do "testit()" in widget 1 -- my only widget
> The function ran, called the livecode handler myJSHandler passing the 2
> values in, and the livecode handler put them into the message box as
> expected.
> 
> It should be possible to write a generic handler in lc to receive data,
> then add it to the javascripthandlerlist for that widget.  You shouldn't
> even have to pre-define your javascript as part of your htmltext, you
> should be able to execute on the fly.
> 
> do "liveCode.myJSHandler('this is a message',8*8)"in widget 1
> 
> Which will call the livecode myJSHandler  from javascript in the widget
> after evaluating the 8*8
> 
> 
> 
> On Wed, May 25, 2016 at 6:51 AM, Jacques Hausser <Jacques.Hausser at unil.ch>
> wrote:
> 
>> Sorry to come back with this question. I have a widget browser defined by
>> a html file. It works fine. But I’m trying to get the result returned by
>> some functions in the html, that is, to find an equivalent of the
>> revBrowserCallScript function, which was working well with the pre-8
>> versions of my stack. I tried “do ‘script’ in widget” with several
>> ‘scripts’, without success, I cannot find where the returned value is
>> hidden (I must confess I’m a featherless sparrow rather than an eagle in
>> javascript).
>> Thank you in advance
>> 
>> Jacques
>> 
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******************************************
Prof. Jacques Hausser
Department of Ecology and Evolution
Biophore / Sorge
University of Lausanne
CH 1015 Lausanne
please use my private address:
6 route de Burtigny
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E-Mail:	jacques.hausser at unil.ch
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