Re: [Xsltforms-support] How to choose when a JS class will be instanciated?

[Grégoire C. <gco...@gm...>]

Hi,

I solved this problem by attaching my global variable to the window.

Grégoire

Le 2 juin 2010 14:57, Grégoire Colbert <gco...@gm...> a écrit :

> Hi,
>
> I have written a JS class ("MapHandler") that should respond to various
> XForms events. The XForm tag that instanciates the class looks like:
>
> <xf:action ev:event="xforms-model-construct-done">
>    <xf:load>
>        <xf:resource value="concat('javascript:var mapHandler = new
> MapHandler();mapHandler.initialize(' ,
> instance('instance-configuration')/default/latitude , ',' ,
> instance('instance-configuration')/default/longitude , ')' )" />
>    </xf:load>
> </xf:action>
>
> As you can see, the "mapHandler" object is created just before the call to
> the "initialize" method. In this case, everything works fine.
>
> Today, I wanted to create another event handler, so I added this inside a
> <select1>:
>
> <xf:action ev:event="xforms-select">
>    <xf:load>
>        <xf:resource value="concat('javascript:mapHandler.centerMap(' ,
> instance('instance-towns')/latitude , ',' ,
> instance('instance-towns')/longitude , ')' )" />
>    </xf:load>
> </xf:action>
>
> *Problem* : this JS code fails when the "xforms-select" event is received.
> The error is "mapHandler is not defined".
>
> Looking at the generated code (using Mozilla's Web Developer extension), I
> see that my JS code is wrapped inside a call to XPath.create(). This rises a
> few questions...
>
> *Questions* :
> 1) Does this mean that the "mapHandler" variable is local to the
> XPath.create function?
> 2) If so, is it possible to declare a global JS variable through XSLTForms?
> 3) If so, how?
>
> Thank you,
> Grégoire
>
>