export function getParentDeepAttribute(
    element: Element,
    attributeName: string,
): string | null {
    //todo maybe do implementation via getParentDeep
    if (element.hasAttribute(attributeName)) {
        return element.getAttribute(attributeName)!;
    } else if (element.parentElement) {
        return getParentDeepAttribute(element.parentElement, attributeName);
    } else {
        return null;
    }
}

export function getParentDeep(
    element: Element,
    callback: (element: Element) => boolean,
    getSelf = false,
): Element | null {
    if (getSelf && callback(element)) {
        return element;
    } else if (element.parentElement) {
        return getParentDeep(element.parentElement, callback, true);
    } else {
        return null;
    }
}

export function getChildrenDeepAttribute(
    element: Element,
    attributeName: string,
): string | null {
    //todo maybe do implementation via universal
    //todo search whole tree
    if (element.hasAttribute(attributeName)) {
        return element.getAttribute(attributeName)!;
    } else if (element.children[0]) {
        return getParentDeepAttribute(element.children[0], attributeName);
    } else {
        return null;
    }
}