@wordpress/block-library/build/file/utils/index.js

Block library for the WordPress editor.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.browserSupportsPdfs = void 0;
/**
 * Uses a combination of user agent matching and feature detection to determine whether
 * the current browser supports rendering PDFs inline.
 *
 * @return {boolean} Whether or not the browser supports inline PDFs.
 */
const browserSupportsPdfs = () => {
  // Most mobile devices include "Mobi" in their UA.
  if (window.navigator.userAgent.indexOf('Mobi') > -1) {
    return false;
  }

  // Android tablets are the notable exception.
  if (window.navigator.userAgent.indexOf('Android') > -1) {
    return false;
  }

  // iPad pretends to be a Mac.
  if (window.navigator.userAgent.indexOf('Macintosh') > -1 && window.navigator.maxTouchPoints && window.navigator.maxTouchPoints > 2) {
    return false;
  }

  // IE only supports PDFs when there's an ActiveX object available for it.
  if (!!(window.ActiveXObject || 'ActiveXObject' in window) && !(createActiveXObject('AcroPDF.PDF') || createActiveXObject('PDF.PdfCtrl'))) {
    return false;
  }
  return true;
};

/**
 * Helper function for creating ActiveX objects, catching any errors that are thrown
 * when it's generated.
 *
 * @param {string} type The name of the ActiveX object to create.
 * @return {window.ActiveXObject|undefined} The generated ActiveXObject, or null if it failed.
 */
exports.browserSupportsPdfs = browserSupportsPdfs;
const createActiveXObject = type => {
  let ax;
  try {
    ax = new window.ActiveXObject(type);
  } catch (e) {
    ax = undefined;
  }
  return ax;
};
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