Function focusActiveElement

docs/app/js/sanddance-app.js:6711–6716

(element, activeElementInfo)

    if (element) return element;
}
function focusActiveElement(element, activeElementInfo) {
    element.focus();
    element.scrollTop = activeElementInfo.scrollTop;
    const input = element;
    if (input.setSelectionRange && activeElementInfo && activeElementInfo.selectionStart != null && activeElementInfo.selectionEnd != null) input.setSelectionRange(activeElementInfo.selectionStart, activeElementInfo.selectionEnd, activeElementInfo.selectionDirection);
}
function setActiveElement(activeElementInfo, container) {
    if (activeElementInfo) {
        const element = findElementByChildPositions(activeElementInfo.childPositions, container);