diff options
Diffstat (limited to 'contracts/erc721/contracts/src/interfaces/IERC721Token.sol')
| -rw-r--r-- | contracts/erc721/contracts/src/interfaces/IERC721Token.sol | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/contracts/erc721/contracts/src/interfaces/IERC721Token.sol b/contracts/erc721/contracts/src/interfaces/IERC721Token.sol new file mode 100644 index 000000000..56a3314df --- /dev/null +++ b/contracts/erc721/contracts/src/interfaces/IERC721Token.sol @@ -0,0 +1,158 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.24; + + +contract IERC721Token { + + /// @dev This emits when ownership of any NFT changes by any mechanism. + /// This event emits when NFTs are created (`from` == 0) and destroyed + /// (`to` == 0). Exception: during contract creation, any number of NFTs + /// may be created and assigned without emitting Transfer. At the time of + /// any transfer, the approved address for that NFT (if any) is reset to none. + event Transfer( + address indexed _from, + address indexed _to, + uint256 indexed _tokenId + ); + + /// @dev This emits when the approved address for an NFT is changed or + /// reaffirmed. The zero address indicates there is no approved address. + /// When a Transfer event emits, this also indicates that the approved + /// address for that NFT (if any) is reset to none. + event Approval( + address indexed _owner, + address indexed _approved, + uint256 indexed _tokenId + ); + + /// @dev This emits when an operator is enabled or disabled for an owner. + /// The operator can manage all NFTs of the owner. + event ApprovalForAll( + address indexed _owner, + address indexed _operator, + bool _approved + ); + + /// @notice Transfers the ownership of an NFT from one address to another address + /// @dev Throws unless `msg.sender` is the current owner, an authorized + /// perator, or the approved address for this NFT. Throws if `_from` is + /// not the current owner. Throws if `_to` is the zero address. Throws if + /// `_tokenId` is not a valid NFT. When transfer is complete, this function + /// checks if `_to` is a smart contract (code size > 0). If so, it calls + /// `onERC721Received` on `_to` and throws if the return value is not + /// `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`. + /// @param _from The current owner of the NFT + /// @param _to The new owner + /// @param _tokenId The NFT to transfer + /// @param _data Additional data with no specified format, sent in call to `_to` + function safeTransferFrom( + address _from, + address _to, + uint256 _tokenId, + bytes _data + ) + external; + + /// @notice Transfers the ownership of an NFT from one address to another address + /// @dev This works identically to the other function with an extra data parameter, + /// except this function just sets data to "". + /// @param _from The current owner of the NFT + /// @param _to The new owner + /// @param _tokenId The NFT to transfer + function safeTransferFrom( + address _from, + address _to, + uint256 _tokenId + ) + external; + + /// @notice Change or reaffirm the approved address for an NFT + /// @dev The zero address indicates there is no approved address. + /// Throws unless `msg.sender` is the current NFT owner, or an authorized + /// operator of the current owner. + /// @param _approved The new approved NFT controller + /// @param _tokenId The NFT to approve + function approve(address _approved, uint256 _tokenId) + external; + + /// @notice Enable or disable approval for a third party ("operator") to manage + /// all of `msg.sender`'s assets + /// @dev Emits the ApprovalForAll event. The contract MUST allow + /// multiple operators per owner. + /// @param _operator Address to add to the set of authorized operators + /// @param _approved True if the operator is approved, false to revoke approval + function setApprovalForAll(address _operator, bool _approved) + external; + + /// @notice Count all NFTs assigned to an owner + /// @dev NFTs assigned to the zero address are considered invalid, and this + /// function throws for queries about the zero address. + /// @param _owner An address for whom to query the balance + /// @return The number of NFTs owned by `_owner`, possibly zero + function balanceOf(address _owner) + external + view + returns (uint256); + + /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE + /// TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE + /// THEY MAY BE PERMANENTLY LOST + /// @dev Throws unless `msg.sender` is the current owner, an authorized + /// operator, or the approved address for this NFT. Throws if `_from` is + /// not the current owner. Throws if `_to` is the zero address. Throws if + /// `_tokenId` is not a valid NFT. + /// @param _from The current owner of the NFT + /// @param _to The new owner + /// @param _tokenId The NFT to transfer + function transferFrom( + address _from, + address _to, + uint256 _tokenId + ) + public; + + /// @notice Find the owner of an NFT + /// @dev NFTs assigned to zero address are considered invalid, and queries + /// about them do throw. + /// @param _tokenId The identifier for an NFT + /// @return The address of the owner of the NFT + function ownerOf(uint256 _tokenId) + public + view + returns (address); + + /// @notice Get the approved address for a single NFT + /// @dev Throws if `_tokenId` is not a valid NFT. + /// @param _tokenId The NFT to find the approved address for + /// @return The approved address for this NFT, or the zero address if there is none + function getApproved(uint256 _tokenId) + public + view + returns (address); + + /// @notice Query if an address is an authorized operator for another address + /// @param _owner The address that owns the NFTs + /// @param _operator The address that acts on behalf of the owner + /// @return True if `_operator` is an approved operator for `_owner`, false otherwise + function isApprovedForAll(address _owner, address _operator) + public + view + returns (bool); +} |