forked from DecentralizedClimateFoundation/DCIPs
102 lines
3.9 KiB
Solidity
102 lines
3.9 KiB
Solidity
// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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import "./IERC721.sol";
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/**
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* @notice Extends ERC-721 to include per-token approval for multiple operators.
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* @dev Off-chain indexers of approvals SHOULD assume that an operator is approved if either of `ERC721.Approval(…)` or
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* `ERC721.ApprovalForAll(…, true)` events are witnessed without the corresponding revocation(s), even if an
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* `ExplicitApprovalFor(…, false)` is emitted.
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* @dev TODO: the ERC-165 identifier for this interface is TBD.
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*/
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interface IERC6464 is ERC721 {
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/**
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* @notice Emitted when approval is explicitly granted or revoked for a token.
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*/
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event ExplicitApprovalFor(
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address indexed operator,
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uint256 indexed tokenId,
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bool approved
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);
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/**
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* @notice Emitted when all explicit approvals, as granted by either `setExplicitApprovalFor()` function, are
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* revoked for all tokens.
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* @dev MUST be emitted upon calls to `revokeAllExplicitApprovals()`.
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*/
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event AllExplicitApprovalsRevoked(address indexed owner);
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/**
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* @notice Emitted when all explicit approvals, as granted by either `setExplicitApprovalFor()` function, are
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* revoked for the specific token.
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* @param owner MUST be `ownerOf(tokenId)` as per ERC721; in the case of revocation due to transfer, this MUST be
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* the `from` address expected to be emitted in the respective `ERC721.Transfer()` event.
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*/
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event AllExplicitApprovalsRevoked(
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address indexed owner,
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uint256 indexed tokenId
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);
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/**
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* @notice Approves the operator to manage the asset on behalf of its owner.
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* @dev Throws if `msg.sender` is not the current NFT owner, or an authorised operator of the current owner.
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* @dev Approvals set via this method MUST be revoked upon transfer of the token to a new owner; equivalent to
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* calling `revokeAllExplicitApprovals(tokenId)`, including associated events.
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* @dev MUST emit `ApprovalFor(operator, tokenId, approved)`.
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* @dev MUST NOT have an effect on any standard ERC721 approval setters / getters.
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*/
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function setExplicitApproval(
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address operator,
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uint256 tokenId,
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bool approved
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) external;
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/**
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* @notice Approves the operator to manage the token(s) on behalf of their owner.
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* @dev MUST be equivalent to calling `setExplicitApprovalFor(operator, tokenId, approved)` for each `tokenId` in
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* the array.
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*/
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function setExplicitApproval(
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address operator,
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uint256[] memory tokenIds,
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bool approved
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) external;
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/**
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* @notice Revokes all explicit approvals granted by `msg.sender`.
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* @dev MUST emit `AllExplicitApprovalsRevoked(msg.sender)`.
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*/
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function revokeAllExplicitApprovals() external;
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/**
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* @notice Revokes all excplicit approvals granted for the specified token.
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* @dev Throws if `msg.sender` is not the current NFT owner, or an authorised operator of the current owner.
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* @dev MUST emit `AllExplicitApprovalsRevoked(msg.sender, tokenId)`.
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*/
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function revokeAllExplicitApprovals(uint256 tokenId) external;
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/**
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* @notice Query whether an address is an approved operator for a token.
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*/
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function isExplicitlyApprovedFor(address operator, uint256 tokenId)
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external
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view
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returns (bool);
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}
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interface IERC6464AnyApproval is ERC721 {
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/**
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* @notice Returns true if any of the following criteria are met:
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* 1. `isExplicitlyApprovedFor(operator, tokenId) == true`; OR
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* 2. `isApprovedForAll(ownerOf(tokenId), operator) == true`; OR
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* 3. `getApproved(tokenId) == operator`.
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* @dev The criteria MUST be extended if other mechanism(s) for approving operators are introduced. The criteria
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* MUST include all approval approaches.
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*/
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function isApprovedFor(address operator, uint256 tokenId)
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external
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view
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returns (bool);
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}
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