jQuery(document).ready(function ($) {
  $(window).on("message", function (event) {
    var originalEvent = event.originalEvent,
      expectedOrigin =
        document.location.protocol + "//" + document.location.hostname,
      message;

    if (originalEvent.origin !== expectedOrigin) {
      return;
    }

    if (originalEvent.data) {
      try {
        message = $.parseJSON(originalEvent.data);
      } catch (e) {
        return;
      }
    }

    if (!message || "undefined" === typeof message.action) {
      return;
    }

    if (message.action == "install-plugin") {
      window.location = $("#w3tc-boldgrid-install").prop("href");
    }
  });
});