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Device.js\r\n// (c) 2014 Matthew Hudson\r\n// Device.js is freely distributable under the MIT license.\r\n// For all details and documentation:\r\n// http://matthewhudson.me/projects/device.js/\r\n\r\n(function() {\r\n\r\n  var device,\r\n    previousDevice,\r\n    addClass,\r\n    documentElement,\r\n    find,\r\n    handleOrientation,\r\n    hasClass,\r\n    orientationEvent,\r\n    removeClass,\r\n    userAgent;\r\n\r\n  // Save the previous value of the device variable.\r\n  previousDevice = window.device;\r\n\r\n  device = {};\r\n\r\n  // Add device as a global object.\r\n  window.device = device;\r\n\r\n  // The <html> element.\r\n  documentElement = window.document.documentElement;\r\n\r\n  // The client user agent string.\r\n  // Lowercase, so we can use the more efficient indexOf(), instead of Regex\r\n  userAgent = window.navigator.userAgent.toLowerCase();\r\n\r\n  // Main functions\r\n  // --------------\r\n\r\n  device.ios = function () {\r\n    return device.iphone() || device.ipod() || device.ipad();\r\n  };\r\n\r\n  device.iphone = function () {\r\n    return !device.windows() && find('iphone');\r\n  };\r\n\r\n  device.ipod = function () {\r\n    return find('ipod');\r\n  };\r\n\r\n  device.ipad = function () {\r\n    return find('ipad');\r\n  };\r\n\r\n  device.android = function () {\r\n    return !device.windows() && find('android');\r\n  };\r\n\r\n  device.androidPhone = function () {\r\n    return device.android() && find('mobile');\r\n  };\r\n\r\n  device.androidTablet = function () {\r\n    return device.android() && !find('mobile');\r\n  };\r\n\r\n  device.blackberry = function () {\r\n    return find('blackberry') || find('bb10') || find('rim');\r\n  };\r\n\r\n  device.blackberryPhone = function () {\r\n    return device.blackberry() && !find('tablet');\r\n  };\r\n\r\n  device.blackberryTablet = function () {\r\n    return device.blackberry() && find('tablet');\r\n  };\r\n\r\n  device.windows = function () {\r\n    return find('windows');\r\n  };\r\n\r\n  device.windowsPhone = function () {\r\n    return device.windows() && find('phone');\r\n  };\r\n\r\n  device.windowsTablet = function () {\r\n    return device.windows() && (find('touch') && !device.windowsPhone());\r\n  };\r\n\r\n  device.fxos = function () {\r\n    return (find('(mobile;') || find('(tablet;')) && find('; rv:');\r\n  };\r\n\r\n  device.fxosPhone = function () {\r\n    return device.fxos() && find('mobile');\r\n  };\r\n\r\n  device.fxosTablet = function () {\r\n    return device.fxos() && find('tablet');\r\n  };\r\n\r\n  device.meego = function () {\r\n    return find('meego');\r\n  };\r\n\r\n  device.cordova = function () {\r\n    return window.cordova && location.protocol === 'file:';\r\n  };\r\n\r\n  device.nodeWebkit = function () {\r\n    return typeof window.process === 'object';\r\n  };\r\n\r\n  device.mobile = function () {\r\n    return device.androidPhone() || device.iphone() || device.ipod() || device.windowsPhone() || device.blackberryPhone() || device.fxosPhone() || device.meego();\r\n  };\r\n\r\n  device.tablet = function () {\r\n    return device.ipad() || device.androidTablet() || device.blackberryTablet() || device.windowsTablet() || device.fxosTablet();\r\n  };\r\n\r\n  device.desktop = function () {\r\n    return !device.tablet() && !device.mobile();\r\n  };\r\n\r\n  device.television = function() {\r\n    var i, tvString;\r\n\r\n    television = [\r\n      \"googletv\",\r\n      \"viera\",\r\n      \"smarttv\",\r\n      \"internet.tv\",\r\n      \"netcast\",\r\n      \"nettv\",\r\n      \"appletv\",\r\n      \"boxee\",\r\n      \"kylo\",\r\n      \"roku\",\r\n      \"dlnadoc\",\r\n      \"roku\",\r\n      \"pov_tv\",\r\n      \"hbbtv\",\r\n      \"ce-html\"\r\n    ];\r\n\r\n    i = 0;\r\n    while (i < television.length) {\r\n      if (find(television[i])) {\r\n        return true;\r\n      }\r\n      i++;\r\n    }\r\n    return false;\r\n  };\r\n\r\n  device.portrait = function () {\r\n    return (window.innerHeight / window.innerWidth) > 1;\r\n  };\r\n\r\n  device.landscape = function () {\r\n    return (window.innerHeight / window.innerWidth) < 1;\r\n  };\r\n\r\n  // Public Utility Functions\r\n  // ------------------------\r\n\r\n  // Run device.js in noConflict mode,\r\n  // returning the device variable to its previous owner.\r\n  device.noConflict = function () {\r\n    window.device = previousDevice;\r\n    return this;\r\n  };\r\n\r\n  // Private Utility Functions\r\n  // -------------------------\r\n\r\n  // Simple UA string search\r\n  find = function (needle) {\r\n    return userAgent.indexOf(needle) !== -1;\r\n  };\r\n\r\n  // Check if documentElement already has a given class.\r\n  hasClass = function (className) {\r\n    var regex;\r\n    regex = new RegExp(className, 'i');\r\n    return documentElement.className.match(regex);\r\n  };\r\n\r\n  // Add one or more CSS classes to the <html> element.\r\n  addClass = function (className) {\r\n    var currentClassNames = null;\r\n    if (!hasClass(className)) {\r\n      currentClassNames = documentElement.className.replace(/^\\s+|\\s+$/g, '');\r\n      documentElement.className = currentClassNames + \" \" + className;\r\n    }\r\n  };\r\n\r\n  // Remove single CSS class from the <html> element.\r\n  removeClass = function (className) {\r\n    if (hasClass(className)) {\r\n      documentElement.className = documentElement.className.replace(\" \" + className, \"\");\r\n    }\r\n  };\r\n\r\n  // HTML Element Handling\r\n  // ---------------------\r\n\r\n  // Insert the appropriate CSS class based on the _user_agent.\r\n\r\n  if (device.ios()) {\r\n    if (device.ipad()) {\r\n      addClass(\"ios ipad tablet\");\r\n    } else if (device.iphone()) {\r\n      addClass(\"ios iphone mobile\");\r\n    } else if (device.ipod()) {\r\n      addClass(\"ios ipod mobile\");\r\n    }\r\n  } else if (device.android()) {\r\n    if (device.androidTablet()) {\r\n      addClass(\"android tablet\");\r\n    } else {\r\n      addClass(\"android mobile\");\r\n    }\r\n  } else if (device.blackberry()) {\r\n    if (device.blackberryTablet()) {\r\n      addClass(\"blackberry tablet\");\r\n    } else {\r\n      addClass(\"blackberry mobile\");\r\n    }\r\n  } else if (device.windows()) {\r\n    if (device.windowsTablet()) {\r\n      addClass(\"windows tablet\");\r\n    } else if (device.windowsPhone()) {\r\n      addClass(\"windows mobile\");\r\n    } else {\r\n      addClass(\"desktop\");\r\n    }\r\n  } else if (device.fxos()) {\r\n    if (device.fxosTablet()) {\r\n      addClass(\"fxos tablet\");\r\n    } else {\r\n      addClass(\"fxos mobile\");\r\n    }\r\n  } else if (device.meego()) {\r\n    addClass(\"meego mobile\");\r\n  } else if (device.nodeWebkit()) {\r\n    addClass(\"node-webkit\");\r\n  } else if (device.television()) {\r\n    addClass(\"television\");\r\n  } else if (device.desktop()) {\r\n    addClass(\"desktop\");\r\n  }\r\n\r\n  if (device.cordova()) {\r\n    addClass(\"cordova\");\r\n  }\r\n\r\n  // Orientation Handling\r\n  // --------------------\r\n\r\n  // Handle device orientation changes.\r\n  handleOrientation = function () {\r\n    if (device.landscape()) {\r\n      removeClass(\"portrait\");\r\n      addClass(\"landscape\");\r\n    } else {\r\n      removeClass(\"landscape\");\r\n      addClass(\"portrait\");\r\n    }\r\n    return;\r\n  };\r\n\r\n  // Detect whether device supports orientationchange event,\r\n  // otherwise fall back to the resize event.\r\n  if (Object.prototype.hasOwnProperty.call(window, \"onorientationchange\")) {\r\n    orientationEvent = \"orientationchange\";\r\n  } else {\r\n    orientationEvent = \"resize\";\r\n  }\r\n\r\n  // Listen for changes in orientation.\r\n  if (window.addEventListener) {\r\n    window.addEventListener(orientationEvent, handleOrientation, false);\r\n  } else if (window.attachEvent) {\r\n    window.attachEvent(orientationEvent, handleOrientation);\r\n  } else {\r\n    window[orientationEvent] = handleOrientation;\r\n  }\r\n\r\n  handleOrientation();\r\n\r\n  if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {\r\n    define(function() {\r\n      return device;\r\n    });\r\n  } else if (typeof module !== 'undefined' && module.exports) {\r\n    module.exports = device;\r\n  } else {\r\n    window.device = device;\r\n  }\r\n\r\n}).call(this);\r\n"]}