contract BasicToken is ERC20Basic, Ownable {
  using SafeMath for uint256;

  mapping(address => uint256) internal balances;
  // allowedAddresses will be able to transfer even when locked
  // lockedAddresses will *not* be able to transfer even when *not locked*
  mapping(address => bool) internal allowedAddresses;
  mapping(address => bool) internal lockedAddresses;
  bool public locked = true;
  
  mapping(address => uint256) internal lockedBalances;
  event LockBalance(address indexed _addr, uint256 _lockAmount);

  function allowAddress(address _addr, bool _allowed) public onlyOwner {
    require(_addr != owner);
    allowedAddresses[_addr] = _allowed;
  }

  function lockAddress(address _addr, bool _locked) public onlyOwner {
    require(_addr != owner);
    lockedAddresses[_addr] = _locked;
  }

  function setLocked(bool _locked) public onlyOwner {
    locked = _locked;
  }

  function canTransfer(address _addr) public view returns (bool) {
    if(locked) {
      if(!allowedAddresses[_addr] && _addr != owner) {
          return false;
      }
    } else if(lockedAddresses[_addr]) {
        return false;
    }

    return true;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(canTransfer(msg.sender));
    require(checkHolderBalance(msg.sender, _value));
    
    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }
  
  function lockBalance(address _addr, uint256 _lockAmount) onlyOwner public {
      require(_addr != address(0));
      //require(_lockAmount != 0);
      
      lockedBalances[_addr] = _lockAmount;
      emit LockBalance(_addr, _lockAmount);
  }
  
  function lockedBalanceOf(address _addr) public view returns (uint256) {
      return lockedBalances[_addr];
  }
  
  function checkHolderBalance(address _addr, uint256 _sendAmount) internal view returns (bool) {
      if (balances[_addr] >= lockedBalances[_addr]
        && balances[_addr].sub(lockedBalances[_addr]) >= _sendAmount) {
          return true;
      } else {
          return false;
      }
  }
}
/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
function balanceOf(address _owner) public view returns (uint256 balance) {
  return balances[_owner];
}

/**
 * @dev Gets the balance of the specified address.
 * @param _owner The address to query the the balance of.
 * @return An uint256 representing the amount owned by the passed address.
 */