5471fc808a
* Updated code style to 4 spaces and 120 max characters per line. * Update contracts/token/ERC721/ERC721Pausable.sol Co-Authored-By: nventuro <nicolas.venturo@gmail.com> * Update contracts/token/ERC721/IERC721.sol Co-Authored-By: nventuro <nicolas.venturo@gmail.com>
73 lines
2.0 KiB
Solidity
73 lines
2.0 KiB
Solidity
pragma solidity ^0.4.24;
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/**
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* @title Ownable
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* @dev The Ownable contract has an owner address, and provides basic authorization control
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* functions, this simplifies the implementation of "user permissions".
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*/
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contract Ownable {
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address private _owner;
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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/**
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* @dev The Ownable constructor sets the original `owner` of the contract to the sender
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* account.
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*/
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constructor () internal {
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_owner = msg.sender;
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emit OwnershipTransferred(address(0), _owner);
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}
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/**
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* @return the address of the owner.
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*/
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function owner() public view returns (address) {
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return _owner;
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}
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/**
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* @dev Throws if called by any account other than the owner.
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*/
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modifier onlyOwner() {
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require(isOwner());
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_;
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}
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/**
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* @return true if `msg.sender` is the owner of the contract.
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*/
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function isOwner() public view returns (bool) {
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return msg.sender == _owner;
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}
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/**
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* @dev Allows the current owner to relinquish control of the contract.
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* @notice Renouncing to ownership will leave the contract without an owner.
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* It will not be possible to call the functions with the `onlyOwner`
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* modifier anymore.
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*/
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function renounceOwnership() public onlyOwner {
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emit OwnershipTransferred(_owner, address(0));
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_owner = address(0);
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}
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/**
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* @dev Allows the current owner to transfer control of the contract to a newOwner.
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* @param newOwner The address to transfer ownership to.
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*/
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function transferOwnership(address newOwner) public onlyOwner {
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_transferOwnership(newOwner);
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}
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/**
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* @dev Transfers control of the contract to a newOwner.
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* @param newOwner The address to transfer ownership to.
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*/
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function _transferOwnership(address newOwner) internal {
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require(newOwner != address(0));
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emit OwnershipTransferred(_owner, newOwner);
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_owner = newOwner;
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}
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}
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