Its possible to inherit methods from xpcom component ?
My example::
I want extend
http://lxr.mozilla.org/seamonkey/source/rdf/base/idl/nsIRDFResource.idl
(add two attributes). I created IDL file:
#include "nsISupports.idl"
#include "nsIRDFResource.idl"
[scriptable, uuid(aaa22684-6aa6-4a7e-bb1b-35331f3e71cd)]
interface nsILdapAuth : nsIRDFResource
{
attribute string bind_dn;
attribute string bind_pw;
};
and javascript component:
const NS_LDAPRESOURCEFACTORY_CONTRACTID =
'@mozilla.org/rdf/resource-factory;1?name=ldap';
const NS_LDAPRESOURCEFACTORY_CID =
Components.ID('{aaa22684-6aa6-4a7e-bb1b-35331f3e71cd}');
function nsLDAPResource() {}
nsLDAPResource.prototype = {
//Bind username and password..
kUserDn: "",
kPass: "",
Init: function(aURI)
{
kUser = "i";
},
get bind_dn()
{
return this.kUserDn;
},
set bind_dn( val )
{
this.kUserDn = val;
},
get bind_pw()
{
return this.kPass;
},
set bind_pw(val)
{
this.kPass = val;
},
// since we implement multiple interfaces, we have to provide QI
//
QueryInterface: function(iid) {
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsIRDFResource) ||
iid.equals(Components.interfaces.nsILdapAuth)
)
return this;
Components.returnCode = Components.results.NS_ERROR_NO_INTERFACE;
return null;
}
}
-----------------
var rdf =
Components.classes["@mozilla.org/rdf/resource-factory;1?name=ldap"].createInstance(Components.interfaces.nsIRDFResource);
rdf.GetDelegate("aaa",Components.interfaces.nsISupportsArray);
I get this exception:
Javascript component does not have a method named: "GetDelegate" when
calling method: [nsIRDFResource::GetDelegate]" nsresult "0x80570030"
(NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED)
Honza T_
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