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Ownable.sol
45 lines (35 loc) · 1.3 KB
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Ownable.sol
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// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity >=0.7.5;
import "../interfaces/IOwnable.sol";
abstract contract Ownable is IOwnable {
address internal _owner;
address internal _newOwner;
event OwnershipPushed(address indexed previousOwner, address indexed newOwner);
event OwnershipPulled(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipPushed( address(0), _owner );
}
function owner() public view override returns (address) {
return _owner;
}
modifier onlyOwner() {
require( _owner == msg.sender, "Ownable: caller is not the owner" );
_;
}
function renounceManagement() public virtual override onlyOwner() {
emit OwnershipPulled( _owner, address(0) );
_owner = address(0);
_newOwner = address(0);
}
function pushManagement( address newOwner_ ) public virtual override onlyOwner() {
emit OwnershipPushed( _owner, newOwner_ );
_newOwner = newOwner_;
}
function pullManagement() public virtual override {
require( msg.sender == _newOwner, "Ownable: must be new owner to pull");
emit OwnershipPulled( _owner, _newOwner );
_owner = _newOwner;
_newOwner = address(0);
}
}