method

allowCustomElement

Source

/**
 * Allow custom elements with the specified tag name and specified attributes.
 *
 * This will allow the elements as custom tags (such as <x-foo></x-foo>),
 * but will not allow tag extensions. Use [allowTagExtension] to allow
 * tag extensions.
 */
void allowCustomElement(String tagName,
    {UriPolicy uriPolicy,
    Iterable<String> attributes,
    Iterable<String> uriAttributes}) {

  var tagNameUpper = tagName.toUpperCase();
  var attrs;
  if (attributes != null) {
    attrs =
        attributes.map((name) => '$tagNameUpper::${name.toLowerCase()}');
  }
  var uriAttrs;
  if (uriAttributes != null) {
    uriAttrs =
        uriAttributes.map((name) => '$tagNameUpper::${name.toLowerCase()}');
  }
  if (uriPolicy == null) {
    uriPolicy = new UriPolicy();
  }

  add(new _CustomElementNodeValidator(
      uriPolicy,
      [tagNameUpper],
      attrs,
      uriAttrs,
      false,
      true));
}