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/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @fileoverview Useragent detection.
 * These methods are not specific to Blockly, and could be factored out into
 * a JavaScript framework such as Closure.
 * @author [email protected] (Neil Fraser)
 */
'use strict';

/**
 * @name Blockly.utils.userAgent
 * @namespace
 */
goog.provide('Blockly.utils.userAgent');

goog.require('Blockly.utils.global');

/** @const {boolean} */
Blockly.utils.userAgent.IE;

/** @const {boolean} */
Blockly.utils.userAgent.EDGE;

/** @const {boolean} */
Blockly.utils.userAgent.JAVA_FX;

/** @const {boolean} */
Blockly.utils.userAgent.CHROME;

/** @const {boolean} */
Blockly.utils.userAgent.WEBKIT;

/** @const {boolean} */
Blockly.utils.userAgent.GECKO;

/** @const {boolean} */
Blockly.utils.userAgent.ANDROID;

/** @const {boolean} */
Blockly.utils.userAgent.IPAD;

/** @const {boolean} */
Blockly.utils.userAgent.IPOD;

/** @const {boolean} */
Blockly.utils.userAgent.IPHONE;

/** @const {boolean} */
Blockly.utils.userAgent.MAC;

/** @const {boolean} */
Blockly.utils.userAgent.TABLET;

/** @const {boolean} */
Blockly.utils.userAgent.MOBILE;

(function(raw) {
  Blockly.utils.userAgent.raw = raw;
  var rawUpper = Blockly.utils.userAgent.raw.toUpperCase();
  /**
   * Case-insensitive test of whether name is in the useragent string.
   * @param {string} name Name to test.
   * @return {boolean} True if name is present.
   */
  function has(name) {
    return rawUpper.indexOf(name.toUpperCase()) != -1;
  }

  // Browsers.  Logic from:
  // https://github.com/google/closure-library/blob/master/closure/goog/labs/useragent/browser.js
  Blockly.utils.userAgent.IE = has('Trident') || has('MSIE');
  Blockly.utils.userAgent.EDGE = has('Edge');
  // Useragent for JavaFX:
  // Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.44
  //     (KHTML, like Gecko) JavaFX/8.0 Safari/537.44
  Blockly.utils.userAgent.JAVA_FX = has('JavaFX');
  Blockly.utils.userAgent.CHROME = (has('Chrome') || has('CriOS')) &&
        !Blockly.utils.userAgent.EDGE;

  // Engines.  Logic from:
  // https://github.com/google/closure-library/blob/master/closure/goog/labs/useragent/engine.js
  Blockly.utils.userAgent.WEBKIT = has('WebKit') &&
      !Blockly.utils.userAgent.EDGE;
  Blockly.utils.userAgent.GECKO = has('Gecko') &&
      !Blockly.utils.userAgent.WEBKIT &&
      !Blockly.utils.userAgent.IE &&
      !Blockly.utils.userAgent.EDGE;

  // Platforms.  Logic from:
  // https://github.com/google/closure-library/blob/master/closure/goog/labs/useragent/platform.js
  Blockly.utils.userAgent.ANDROID = has('Android');
  Blockly.utils.userAgent.IPAD = has('iPad');
  Blockly.utils.userAgent.IPOD = has('iPod');
  Blockly.utils.userAgent.IPHONE = has('iPhone') &&
      !Blockly.utils.userAgent.IPAD && !Blockly.utils.userAgent.IPOD;
  Blockly.utils.userAgent.MAC = has('Macintosh');

  // Devices.  Logic from:
  // https://github.com/google/closure-library/blob/master/closure/goog/labs/useragent/device.js
  Blockly.utils.userAgent.TABLET = Blockly.utils.userAgent.IPAD ||
      (Blockly.utils.userAgent.ANDROID && !has('Mobile')) || has('Silk');
  Blockly.utils.userAgent.MOBILE = !Blockly.utils.userAgent.TABLET &&
      (Blockly.utils.userAgent.IPOD || Blockly.utils.userAgent.IPHONE ||
       Blockly.utils.userAgent.ANDROID || has('IEMobile'));
})((Blockly.utils.global.navigator && Blockly.utils.global.navigator.userAgent) || '');