@indielayer/ui/lib/virtual/core/getOffsetForIndex.js

Indielayer UI Components with Tailwind CSS build for Vue 3

import { getEstimatedSize as o } from "./getEstimatedSize.js";
function p({
  align: u,
  cachedBounds: l,
  index: r,
  itemCount: a,
  itemSize: d,
  containerScrollOffset: e,
  containerSize: t
}) {
  if (r < 0 || r >= a)
    throw new RangeError(
      `Invalid index specified: ${r}. Index ${r} is not within the range of 0 - ${a - 1}`
    );
  const h = o({
    cachedBounds: l,
    itemCount: a,
    itemSize: d
  }), s = l.get(r), m = Math.max(
    0,
    Math.min(h - t, s.scrollOffset)
  ), f = Math.max(
    0,
    s.scrollOffset - t + s.size
  );
  switch (u === "smart" && (e >= f && e <= m ? u = "auto" : u = "center"), u) {
    case "start":
      return m;
    case "end":
      return f;
    case "center":
      return s.scrollOffset <= t / 2 ? 0 : s.scrollOffset + s.size / 2 >= h - t / 2 ? h - t : s.scrollOffset + s.size / 2 - t / 2;
    case "auto":
    default:
      return e >= f && e <= m ? e : e < f ? f : m;
  }
}
export {
  p as getOffsetForIndex
};