detectOperatingSystem method

Implementation

OperatingSystem detectOperatingSystem({
  String? overridePlatform,
  int? overrideMaxTouchPoints,
}) {
  final String platform = overridePlatform ?? domWindow.navigator.platform!;

  if (platform.startsWith('Mac')) {
    // iDevices requesting a "desktop site" spoof their UA so it looks like a Mac.
    // This checks if we're in a touch device, or on a real mac.
    final int maxTouchPoints = overrideMaxTouchPoints ??
        domWindow.navigator.maxTouchPoints?.toInt() ??
        0;
    if (maxTouchPoints > 2) {
      return OperatingSystem.iOs;
    }
    return OperatingSystem.macOs;
  } else if (platform.toLowerCase().contains('iphone') ||
      platform.toLowerCase().contains('ipad') ||
      platform.toLowerCase().contains('ipod')) {
    return OperatingSystem.iOs;
  } else if (userAgent.contains('Android')) {
    // The Android OS reports itself as "Linux armv8l" in
    // [domWindow.navigator.platform]. So we have to check the user-agent to
    // determine if the OS is Android or not.
    return OperatingSystem.android;
  } else if (platform.startsWith('Linux')) {
    return OperatingSystem.linux;
  } else if (platform.startsWith('Win')) {
    return OperatingSystem.windows;
  } else {
    return OperatingSystem.unknown;
  }
}