Subj : how to overload setter function, but keeping standard behavior in addition to specific one
To   : netscape.public.mozilla.jseng
From : smaraux
Date : Wed Mar 02 2005 10:04 am

Hello,

I am using an array of js vals attached to a js object via
JS_DefineElement function. When these js data are set, I need to apply
a specific behavior in addition to the standard one.

to summarize :

I would like to use a class with this setter :

setArrayElement(JSContext *pJSContext, JSObject *pJSObject, jsval id,
jsval *pJSSetVal)
{
       //... manipulating private data according to set value ...
       JS_SetElement(pJSContext, pJSObject, ind, pJSSetVal);
}

I was hoping the call would not loop, and fall back to standard stub
setter when calling the second time JS_SetElement(). Unfortunately,
the JS_SetElement call back the setArrayElement, leading to a dead
lock. (which is a valid behavior though, I agree)

How could I do to keep the standard behavior of set element, added to
my custom private data manipulation ?

I have taken a look at spidermonkey code, but "standard behavior"
seems quite stuck with other SetProperty code, it si not a different
function as I expected.

Thank you in advance for any advice.

.