function ComponentValidator() {

}

ComponentValidator.prototype.validate = function(instance, laf) {

	return null;

}

ComponentValidator.prototype.queryPropertyChange = function(instance, propertyPath, newValue, laf) {

	var result = null;

	if (propertyPath == "always")

		result = null;

	else if (propertyPath == "never")

		result = "not allowed";

	else if (propertyPath == "notnull") {

		if (newValue == null)

			result = "not null";

	}

	else if (propertyPath == "compound.oddonly") {

		if ((newValue & 1)==0)

			result = "odd only";

	}

	else 

		result = "unknown";

	return result;

}