bool NPN_Invoke(NPP id, NPObject* obj, NPIdentifier identifier, const NPVariant *args, uint32_t count, NPVariant*result)
{
char msg[1024];
sprintf(msg, "NPN_Invoke");
logger->logMessage(msg);
bool rv = NPNFuncs.invoke(id, obj, identifier, args, count, result);
sprintf(msg, "--Return: %x", rv);
logger->logMessage(msg);
return rv;
}
bool NPN_Invoke(NPP npp, NPObject* obj, NPIdentifier methodName,
const NPVariant *args, uint32_t argCount, NPVariant *result)
{
return NPNFuncs.invoke(npp, obj, methodName, args, argCount, result);
}
SEXP R_NPAPI_Invoke(SEXP plug, SEXP Robj, SEXP Rname, SEXP Rargs, SEXP RconvArgsEnum, SEXP RconvArgsFuns, SEXP RconvRet, SEXP RkeepRes )
{
NPP inst = (NPP) R_ExternalPtrAddr(GET_SLOT( plug , Rf_install( "ref" ) ) );
NPNetscapeFuncs *funcs = (NPNetscapeFuncs *) R_ExternalPtrAddr(GET_SLOT( GET_SLOT(plug, Rf_install("funcs")), Rf_install("ref")));
NPVariant *obj = (NPVariant *) R_ExternalPtrAddr(GET_SLOT( Robj , Rf_install( "ref" ) ) );
if(!NPVARIANT_IS_OBJECT(*obj))
{
//What should we return in this case?
Rf_error("Robj is not an NPVariant containing an NPObject.");
return R_NilValue;
}
//custom conversion functions are applied on R side for return value.
convert_t convRet = (convert_t) INTEGER(RconvRet)[0];
convert_t curConvArg;
int nargs = LENGTH(Rargs);
NPVariant *args = (NPVariant *) funcs->memalloc(nargs*sizeof(NPVariant));
for(int i = 0; i < nargs; i++)
{
curConvArg = (convert_t) INTEGER(RconvArgsEnum)[i];
ConvertRToNP(VECTOR_ELT(Rargs, i), inst, funcs, &(args[i]), curConvArg);
//If we have a custom converter we invoke it with here
if(curConvArg == CONV_CUSTOM)
{
fprintf(stderr, "Custom argument converter detected. Attempting to call JS Conversion function.");fflush(stderr);
funcs->invokeDefault(inst, ((NPVariant *) R_ExternalPtrAddr(GET_SLOT( VECTOR_ELT(RconvArgsFuns, i), Rf_install( "ref" ) ) ) ) -> value.objectValue, &args[i], 1, &args[i]) ;
}
}
NPVariant *ret = (NPVariant *) funcs->memalloc(sizeof(NPVariant));
const char *ccname = CHAR(STRING_ELT(Rname, 0));
bool hasMethod = funcs->hasmethod(inst, obj->value.objectValue, funcs->getstringidentifier(ccname));
if(!hasMethod)
{
char msg[200];
sprintf(msg, "Object has no %s method.", ccname);
Rf_error(msg);
return R_NilValue;
}
bool success = funcs->invoke(inst, obj->value.objectValue, funcs->getstringidentifier(ccname), args, nargs, ret);
if(!success)
{
fprintf(stderr, "\nInvocation of JS method %s failed.", ccname);fflush(stderr);
}
for(int j=0; j<nargs; j++)
{
if (NPVARIANT_IS_OBJECT(args[j]))
funcs->releaseobject(args[j].value.objectValue);
//funcs->releasevariantvalue(&args[j]);
}
funcs->memfree(args);
if(!success)
{
char msg2[200];
sprintf(msg2, "Invoke failed for %s method.", ccname);
Rf_error(msg2);
return R_NilValue;
}
SEXP ans;
//PROTECT(ans = R_NilValue);
PROTECT(ans = NEW_INTEGER(1));
bool canfree = ConvertNPToR(ret, inst, funcs, convRet, &ans);
bool keepRes = LOGICAL(RkeepRes)[0];
if(canfree || !keepRes)
funcs->releasevariantvalue(ret);
UNPROTECT(1);
if(keepRes)
return ans ;
else
return R_NilValue;
}
static void
cloud_spy_log (const gchar * log_domain, GLogLevelFlags log_level, const gchar * message, gpointer user_data)
{
NPNetscapeFuncs * browser = cloud_spy_nsfuncs;
NPP instance = static_cast<NPP> (user_data);
NPObject * window = NULL, * console = NULL;
NPVariant variant, result;
NPError error;
(void) log_domain;
(void) log_level;
error = browser->getvalue (instance, NPNVWindowNPObject, &window);
if (error != NPERR_NO_ERROR)
goto beach;
VOID_TO_NPVARIANT (variant);
if (!browser->getproperty (instance, window, browser->getstringidentifier ("console"), &variant))
goto beach;
console = NPVARIANT_TO_OBJECT (variant);
STRINGZ_TO_NPVARIANT (message, variant);
VOID_TO_NPVARIANT (result);
if (!browser->invoke (instance, console, browser->getstringidentifier ("log"), &variant, 1, &result))
goto beach;
browser->releasevariantvalue (&result);
beach:
if (console != NULL)
browser->releaseobject (console);
if (window != NULL)
browser->releaseobject (window);
}