slate/common/window.js

const getNavigatorAgent = (userAgent) => {
  return userAgent
    ? userAgent
    : navigator.userAgent || navigator.vendor || window.opera;
};

export const delay = async (waitMs) => {
  return await new Promise((resolve) => setTimeout(resolve, waitMs));
};

export const checkIfElementIsVisible = (el) => {
  const rect = el.getBoundingClientRect();
  const windowHeight =
    window.innerHeight || document.documentElement.clientHeight;
  const windowWidth = window.innerWidth || document.documentElement.clientWidth;

  const isVisible =
    rect.left >= 0 &&
    rect.top >= 0 &&
    rect.left + rect.width <= windowWidth &&
    rect.top + rect.height <= windowHeight;

  return isVisible;
};

export const getViewportSize = () => {
  const width = Math.max(
    document.documentElement ? document.documentElement.clientWidth : 0,
    window.innerWidth || 0
  );
  const height = Math.max(
    document.documentElement ? document.documentElement.clientHeight : 0,
    window.innerHeight || 0
  );

  return {
    width,
    height,
  };
};

// NOTE(jim): This has a 2mb limit and is pointless :(
export const saveAs = (uri, filename) => {
  var link = document.createElement("a");
  if (typeof link.download === "string") {
    document.body.appendChild(link);
    link.download = filename;
    link.href = `data:,${uri}`;
    link.click();
    document.body.removeChild(link);
  } else {
    location.replace(uri);
  }
};

export const getQueryParameterByName = (name) => {
  let url = window.location.href;
  name = name.replace(/[\[\]]/g, "\\$&");
  var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
    results = regex.exec(url);
  if (!results) return null;
  if (!results[2]) return "";
  return decodeURIComponent(results[2].replace(/\+/g, " "));
};

export const isDescendant = (parent, child) => {
  let node = child.parentNode;
  while (node != null) {
    if (node == parent) {
      return true;
    }
    node = node.parentNode;
  }
  return false;
};

export const getScrollDistance = () => {
  return (
    window.pageYOffset ||
    document.documentElement.scrollTop ||
    document.body.scrollTop
  );
};

export const isAndroid = (userAgent) => {
  const navigatorAgent = getNavigatorAgent(userAgent);
  return /Android/i.test(navigatorAgent);
};

export const isIOS = (userAgent) => {
  const navigatorAgent = getNavigatorAgent(userAgent);
  return /iPhone|iPad|iPod/i.test(navigatorAgent);
};

export const isMobileBrowser = (userAgent) => {
  const navigatorAgent = getNavigatorAgent(userAgent);

  return (
    /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ipad|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(
      navigatorAgent
    ) ||
    /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(
      navigatorAgent.substr(0, 4)
    )
  );
};