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ExampleERC721AUpgradeable.sol
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ExampleERC721AUpgradeable.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import {IERC721AUpgradeable, ERC721AUpgradeable} from "erc721a-upgradeable/ERC721AUpgradeable.sol";
import {ERC721AQueryableUpgradeable} from
"erc721a-upgradeable/extensions/ERC721AQueryableUpgradeable.sol";
import {ERC721ABurnableUpgradeable} from
"erc721a-upgradeable/extensions/ERC721ABurnableUpgradeable.sol";
import {OperatorFilterer} from "../../OperatorFilterer.sol";
import {OwnableUpgradeable} from "openzeppelin-contracts-upgradeable/access/OwnableUpgradeable.sol";
import {
IERC2981Upgradeable,
ERC2981Upgradeable
} from "openzeppelin-contracts-upgradeable/token/common/ERC2981Upgradeable.sol";
/**
* @title ExampleERC721AUpgradeable
* @notice This example contract is configured to use the DefaultOperatorFilterer, which automatically registers the
* token and subscribes it to OpenSea's curated filters.
* Adding the onlyAllowedOperator modifier to the transferFrom and both safeTransferFrom methods ensures that
* the msg.sender (operator) is allowed by the OperatorFilterRegistry.
*/
abstract contract ExampleERC721AUpgradeable is
ERC721AQueryableUpgradeable,
ERC721ABurnableUpgradeable,
OperatorFilterer,
OwnableUpgradeable,
ERC2981Upgradeable
{
bool public operatorFilteringEnabled;
function initialize() public initializer initializerERC721A {
__ERC721A_init("Example", "EXAMPLE");
__Ownable_init();
__ERC2981_init();
_registerForOperatorFiltering();
operatorFilteringEnabled = true;
// Set royalty receiver to the contract creator,
// at 5% (default denominator is 10000).
_setDefaultRoyalty(msg.sender, 500);
}
function setApprovalForAll(address operator, bool approved)
public
override(IERC721AUpgradeable, ERC721AUpgradeable)
onlyAllowedOperatorApproval(operator)
{
super.setApprovalForAll(operator, approved);
}
function approve(address operator, uint256 tokenId)
public
payable
override(IERC721AUpgradeable, ERC721AUpgradeable)
onlyAllowedOperatorApproval(operator)
{
super.approve(operator, tokenId);
}
function transferFrom(address from, address to, uint256 tokenId)
public
payable
override(IERC721AUpgradeable, ERC721AUpgradeable)
onlyAllowedOperator(from)
{
super.transferFrom(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId)
public
payable
override(IERC721AUpgradeable, ERC721AUpgradeable)
onlyAllowedOperator(from)
{
super.safeTransferFrom(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data)
public
payable
override(IERC721AUpgradeable, ERC721AUpgradeable)
onlyAllowedOperator(from)
{
super.safeTransferFrom(from, to, tokenId, data);
}
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(IERC721AUpgradeable, ERC721AUpgradeable, ERC2981Upgradeable)
returns (bool)
{
// Supports the following `interfaceId`s:
// - IERC165: 0x01ffc9a7
// - IERC721: 0x80ac58cd
// - IERC721Metadata: 0x5b5e139f
// - IERC2981: 0x2a55205a
return ERC721AUpgradeable.supportsInterface(interfaceId)
|| ERC2981Upgradeable.supportsInterface(interfaceId);
}
function setDefaultRoyalty(address receiver, uint96 feeNumerator) public onlyOwner {
_setDefaultRoyalty(receiver, feeNumerator);
}
function setOperatorFilteringEnabled(bool value) public onlyOwner {
operatorFilteringEnabled = value;
}
function _operatorFilteringEnabled() internal view override returns (bool) {
return operatorFilteringEnabled;
}
function _isPriorityOperator(address operator) internal pure override returns (bool) {
// OpenSea Seaport Conduit:
// https://etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
// https://goerli.etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
return operator == address(0x1E0049783F008A0085193E00003D00cd54003c71);
}
}