Function isEditable

dragula.js:568–573

(el)

function getParent (el) { return el.parentNode === doc ? null : el.parentNode; }
function isInput (el) { return el.tagName === 'INPUT' || el.tagName === 'TEXTAREA' || el.tagName === 'SELECT' || isEditable(el); }
function isEditable (el) {
  if (!el) { return false; } // no parents were editable
  if (el.contentEditable === 'false') { return false; } // stop the lookup
  if (el.contentEditable === 'true') { return true; } // found a contentEditable element in the chain
  return isEditable(getParent(el)); // contentEditable is set to 'inherit'
}

function nextEl (el) {
  return el.nextElementSibling || manually();