Subj : Re: dereferenced object
To   : netscape.public.mozilla.jseng
From : "Thibaut" <i_doz_not@hotmail.com>
Date : Mon Apr 19 2004 05:08 pm

i have another problem ...

my code for the JSClass.getProperty hook is below :
How do i get my array ? my problem is that when i want to get my array
i do :
Js_GetProperty(cx,obj,"my_array",&my_array)
but since i declared the callback function below i can't call
JS_GetProperty(...) because it calls my_getProperty instead ...
my question is : how can i get my array now in the my_getProperty(...)  ???

i'm sorry to bother you with all these questions but i'm a bit lost.
thank you

Thibaut

//******************************************************
 static JSBool
my_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
  if (JSVAL_IS_INT(id)){
   uint32 idx;
   JS_ValueToECMAUint32(cx, id,&idx);

   jsval jsval_liste;
   if (!JS_GetProperty(cx,obj,"my_array",&my_array))      /////   this line
calls back my_getProperty(...) ...
    return JS_FALSE;

   JSObject *liste;

   if (!JS_ValueToObject(cx, jsval_liste, &liste))
    return JS_FALSE;

   if (!JS_IsArrayObject(cx,obj))
    return JS_FALSE;

   uint32 index;
   JS_ValueToECMAUint32(cx, id,&index);

  if (!JS_GetElement(cx, liste, idx,vp))
   return JS_FALSE;

   }

    return JS_TRUE;
}




"Brendan Eich" <brendan@meer.net> a écrit dans le message de news:
c5shfl$hoq2@ripley.netscape.com...
> Thibaut wrote:
> > What do you mean ??
> >
> > This is what you told me :
> >
> >>Use the JSClass.getProperty hook for childNodes' class.  It should
> >>handle id parameters for which JSVAL_IS_INT(id) evaluates to true and
> >>JSVAL_TO_INT(id) is >= 0 and < the length of the array.
> >
> >
> > i know how to get a property , when i evaluate this in my application :
> > Node.chilNodes.item(0)
> > it works properly. but how can I  implement this : Node.childNodes[0]
> >  so that it does the same job ???
> > i want to tell the js engine that when i apply [index] to chilNodes
> > (Node.childNodes[index] ) it has to call the function item(index)
> > (Node.childNodes.item(index) )
> >
> > childNodes is not an array but an object with an arrayObject as property
>
>
> Yes, I know.  I meant what I wrote: the childNodes object should have a
> JSClass whose getProperty handles non-negative int id gets by calling
> item(i), where i = JSVAL_TO_INT(id).
>
> /be

.