webpack-bootstrap-ui-kit/src/js_old/_components/_ui.shrink.js

"use strict";

import $ from "jquery";
import Events from "../_events";

const ShrinkUI = (($) => {
  // Constants
  const W = window;
  const D = document;
  const NAME = "ShrinkUI";

  console.log(`${NAME}: init`);

  $(W).on(
    `${NAME}.init ${Events.LOADED} ${Events.SCROLL} ${Events.RESIZE}`,
    () => {
      if ($("#Navigation > .navbar-collapse").hasClass("show")) {
        return;
      }

      let h1 = $("#SiteWideMessage").height();
      if (!h1) {
        h1 = 0;
      }
      let h2 = $("#SiteWideOffline").height();
      if (!h2) {
        h2 = 0;
      }

      let h3 = $("#Header").height();
      if (!h3) {
        h3 = 0;
      }

      const headerHeight = h1 + h2 + h3;

      if ($(D).scrollTop() > headerHeight) {
        $("body").addClass("shrink");
      } else {
        $("body").removeClass("shrink");
      }
    }
  );

  return ShrinkUI;
})($);

export default ShrinkUI;