Function getOverflowParent

javascript/atoms/typescript/is-displayed.ts:269–281

(current: Element)

    }

    function getOverflowParent(current: Element): Element | null {
      var position = getEffectiveStyle(current, 'position');
      if (position === 'fixed') {
        treatAsFixedPosition = true;
        return current === htmlElem ? null : htmlElem;
      }

      var parent = getParentElement(current);
      while (parent && !canBeOverflowed(parent, position)) {
        parent = getParentElement(parent);
      }
      return parent;
    }

    function getOverflowStyles(current: Element): OverflowStyles {
      var overflowElem = current;