Subj : Document, window objects ... not accessible from my jsFunction
To   : netscape.public.mozilla.jseng
From : Béatrice Philippe
Date : Sun Jan 30 2005 10:18 pm

hello !
i'm still trying to execute my newly created jsFunction, but i have some
problems with all objects like 'document', 'window' 'navigator' ... that my
app cannot access. Here is my code:

  //consider the following function i want to create and add in the global
object of the current  domWindow (in fact, i take an existing javascript
function i got from nsiDomHtmlScriptObject, get its source in a string, and
create a new one with a new javascript code in my c++ app):
......
  char * = "var i  = 'http: '; var j = 'yahoo.com'; var x = document; var y
= i+j; y.toString();"


// the following code fails (see below) because 'document' object maybe is
not known. And without 'x=document', JS_CallFunction() runs very well (why
????) :
.....
  nsCOMPtr<nsIScriptGlobalObject>
scriptGlobal(do_QueryInterface(mDomWindow));
  nsIScriptContext * aScriptContext = scriptGlobal->GetContext();
  aScriptContext->SetProcessingScriptTag(PR_TRUE);
  JSContext* existing_cx = (JSContext *)aScriptContext->GetNativeContext();
  JSRuntime * rt = JS_GetRuntime(existing_cx);
  JSContext *cx = JS_NewContext(rt, 8192);
  JSObject * aGlobalObject = scriptGlobal->GetGlobalJSObject();
   JSClass globalClass =
   {
     "aFunction", 0,
     JS_PropertyStub,  JS_PropertyStub,
     JS_PropertyStub,  JS_PropertyStub,
     JS_EnumerateStub, JS_ResolveStub,
     JS_ConvertStub,   JS_FinalizeStub
   };
   JSObject *aObject = JS_NewObject(cx, &globalClass, nsnull, nsnull);
   JS_InitStandardClasses(cx, aObject);

   JSFunction* aFunction_ptr = JS_CompileFunction(cx, aObject, "aFunction",
0, NULL,
                                  aScript_String, strlen(aScript_String),
"error", lineno);
   JSObject * childObject = JS_GetFunctionObject(aFunction_ptr);
   JS_AddNamedRoot(existing_cx, aFunction_ptr, "aFunction");
   JS_SetGlobalObject(existing_cx, window_obj);//old= aGlobalObject
   JS_SetOptions(cx, JS_GetOptions(existing_cx) | JSOPTION_VAROBJFIX);

    if(!JS_CallFunction(cx, aObject, aFunction_ptr, 0, NULL, &rval2)) {
         fprintf(mFile,"\n play_script_call() - call function failed !!\n");
         fflush(mFile);
        MY APP GOES HERE !!!!
    }

Thank you if you have any idea because it's a very big problem for me.
-- 
Béatrice Philippe-Derbez
Société Urbilog
80, rue d'Iéna - 59000 Lille
01-69-88-08-11
06-77-92-88-51
beatrice.derbez.bd@wanadoo.fr

.