buildExternalElement method

Implementation

T? buildExternalElement(
  DOMElement? domParent,
  T? parent,
  ExternalElementNode domElement,
  DOMTreeMap<T> treeMap,
  DOMContext<T>? context,
) {
  if (domParent != null) {
    domElement.parent = domParent;
  }

  var externalElement = domElement.externalElement;

  if (!canHandleExternalElement(externalElement)) {
    var parsedElement = _parseExternalElement(
      domParent,
      parent,
      domElement,
      externalElement,
      treeMap,
      context,
    );
    if (parsedElement != null) {
      if (parent != null && !containsNode(parent, parsedElement)) {
        addChildToElement(parent, parsedElement);
      }

      domElement.notifyElementGenerated(parsedElement);

      return parsedElement;
    }
  }

  if (parent != null) {
    var children = addExternalElementToElement(
      parent,
      externalElement,
      treeMap: treeMap,
      context: context,
    );
    if (children == null || children.isEmpty) return null;
    var node = children.first;
    treeMap.map(domElement, node, generator: this, context: context);

    domElement.notifyElementGenerated(node);

    return node;
  } else if (externalElement is T) {
    treeMap.map(
      domElement,
      externalElement,
      generator: this,
      context: context,
    );
    addChildToElement(parent, externalElement);

    domElement.notifyElementGenerated(externalElement);

    return externalElement;
  }

  return null;
}