/**
 * Disallows selecting text.
 */
module.exports = createTextSelectionInterceptor;

function createTextSelectionInterceptor(useFake) {
  if (useFake) {
    return {
      capture: noop,
      release: noop
    };
  }

  var dragObject;
  var prevSelectStart;
  var prevDragStart;
  var wasCaptured = false;

  return {
    capture: capture,
    release: release
  };

  function capture(domObject) {
    wasCaptured = true;
    prevSelectStart = window.document.onselectstart;
    prevDragStart = window.document.ondragstart;

    window.document.onselectstart = disabled;

    dragObject = domObject;
    dragObject.ondragstart = disabled;
  }

  function release() {
    if (!wasCaptured) return;
    
    wasCaptured = false;
    window.document.onselectstart = prevSelectStart;
    if (dragObject) dragObject.ondragstart = prevDragStart;
  }
}

function disabled(e) {
  e.stopPropagation();
  return false;
}

function noop() {}