useWallet

Description

useWallet is the most useful React Hook to play with. For details of React Hook, check the React doc.

It retrieves all the properties and functions from WalletProvider, with which you can get properties and call functions of a connected wallet.

tip

Make sure it runs in a React component under WalletProvider

Examples

Basic Usage

We start with a simple senario like getting information from the connected wallet .

import {useWallet} from '@suiet/wallet-kit'

function App() {
  const wallet = useWallet();
  console.log('wallet status', wallet.status)
  console.log('connected wallet name', wallet.name)
  console.log('connected account info', wallet.account)
}

Sign and Execute Transactions

Sui introduces a new concept of Programmable Transaction to make it flexible for developers to define transactions, such as allowing third-party to set gas payment and executing batch transactions in one call.

For more details of Programmable Transaction, check Sui docs

Here we define a moveCall transaction to implement a simple nft minting example.

import {useWallet} from '@suiet/wallet-kit'

function App() {
  const wallet = useWallet();

  async function handleSignAndExecuteTxBlock() {
    if (!wallet.connected) return

    // define a programmable transaction
    const tx = new TransactionBlock();
    const packageObjectId = "0xXXX";
    tx.moveCall({
      target: `${packageObjectId}::nft::mint`,
      arguments: [tx.pure("Example NFT")],
    });

    try {
      // execute the programmable transaction
      const resData = await wallet.signAndExecuteTransactionBlock({
        transactionBlock: tx
      });
      console.log('nft minted successfully!', resData);
      alert('Congrats! your nft is minted!')
    } catch (e) {
      console.error('nft mint failed', e);
    }
  }

  return (
    <button onClick={handleSignAndExecuteTx}> Mint Your NFT !</button>
  )
}

Sign Message

Message signing is an important action to verify whether an approval is confirmed by the owner of an account.

It is useful for DApp to ask user's approval for senarios like approving Terms of Service and Privacy Policy (Below is an example of message signing in OpenSea, the NFT marketplace in Ethereum)

Here is an example for signing a simple message "Hello World".

Notice that all the params are Uint8Array (i.e. bytes) type. For browser app, you can use TextEncoder to encode and decode.

Update: we prefer signPersonalMessage over signMessage according to the latest wallet standard.

import {useWallet} from '@suiet/wallet-kit'
import * as tweetnacl from 'tweetnacl'

function App() {
  const wallet = useWallet();

  async function handleSignMsg() {
    try {
      const msg = 'Hello world!'
      // convert string to Uint8Array 
      const msgBytes = new TextEncoder().encode(msg)
      
      const result = await wallet.signPersonalMessage({
        message: msgBytes
      })
            // verify signature with publicKey and SignedMessage (params are all included in result)
      const verifyResult = await wallet.verifySignedMessage(result, wallet.account.publicKey)
      if (!verifyResult) {
        console.log('signPersonalMessage succeed, but verify signedMessage failed')
      } else {
        console.log('signPersonalMessage succeed, and verify signedMessage succeed!')
      }
    } catch (e) {
      console.error('signPersonalMessage failed', e)
    }
  }

  return (
    <button onClick={handleSignMsg}> Sign Message </button>
  )
}

Get the connected chain (network) of wallet

caution

Since this is not a standard feature, not all the wallet has implemented. Check Can I Use for further information.

Your dapp can get the current connected chain of wallet.

info

For most wallets, if user switches network inside the wallet, the value WOULD NOT get updated. (Except for Suiet Wallet, we implemented this network change notification for a better development experience)

This is because Sui team suggests each dapp should separate the environments for each chain (sui:devnet, sui:testnet, sui:mainnet). And the active chain returned by the connected wallet could be used to match the dapp's environment.

In a nutshell, eliminating the need to switch network for dapp is a better user experience for a long term.

import {useWallet} from '@suiet/wallet-kit'
import * as tweetnacl from 'tweetnacl'

function App() {
  const wallet = useWallet();

  useEffect(() => {
    if (!wallet.connected) return;
    console.log('current connected chain (network)', wallet.chain?.name)  // example output: "sui:devnet", "sui:testnet" or "sui:mainnet"
  }, [wallet.connected])
}

API References

name

The name of connected wallet.

Type	Default
string | undefined	undefined

connection status

The connection status of wallet.

Properties	Type	Default
connecting	boolean	false
connected	boolean	false
status	'disconnected' | 'connecting' | 'connected'	'disconnected'

const {status, connected, connecting} = useWallet();

// the assert expressions are equally the same
assert(status === 'disconnected', !connecting && !connected); // not connect to wallet
assert(status === 'connecting', connecting); // now connecting to the wallet
assert(status === 'connected', connected); // connected to the wallet

account

The account info in the connected wallet, including address, publicKey etc.

Type	Default
WalletAccount	undefined

const {connected, account} = useWallet();

function printAccountInfo() {
  if (!connected) return
  console.log(account?.address)
  console.log(account?.publicKey)
}

address

Alias for account.address

select

Type	Default
(WalletName: string) => void

getAccounts

Get all the accessible accounts returned by wallet.

Type	Default
() => Promise<string[]>

The getAccounts will get the current wallet's account address. Now one wallet only have one account.

import {useWallet} from '@suiet/wallet-kit';

function YourComponent() {
  const wallet = useWallet();

  function handleGetAccounts() {
    if (!wallet.connected) return
    getAccounts().then((accounts) => {
      console.log(accounts);
    })
  }
}

chains

Configuration of supported chains from WalletProvider

Type	Default
Chain[]	DefaultChains

chain

Current connected chain of wallet.

Might not be synced with the wallet if the wallet doesn't support wallet-standard "change" event.

Type	Default
string	the first value of configured chains or UnknownChain

adapter

The adapter normalized from the raw adapter of the connected wallet. You can call all the properties and functions on it, which is followed the @mysten/wallet-standard

Type	Default
IWalletAdapter	undefined

signAndExecuteTransactionBlock

The universal function to send and execute transactions via connected wallet.

Type	Default
({transactionBlock: TransactionBlock, requestType?: ExecuteTransactionRequestType, options?: SuiTransactionBlockResponseOptions}) => Promise<SuiSignAndExecuteTransactionBlockOutput>

signPersonalMessage

The function is for message signing.

Type	Default
(input: {message: Uint8Array}) => Promise<{signature: string; bytes: string}>

verifySignedMessage

This function is for verifying the output of signPersonalMessage following the Sui standard. Returns true if the returned signature matches the message to be signed and the signer's publicKey.

For details please check here

Type	Default
(input: {signature: string; messageBytes: string}) => Promise<boolean>

on

The function for wallet event listening. Returns the off function to remove listener.

Type	Default
<E extends WalletEvent>(event: E, listener: WalletEventListeners[E], ) => () => void;

All the wallet events:

Event	Listener	Description
accountChange	(params: { account: WalletAccount; }) => void;	Emit when wallet app changes its account
featureChange	(params: { features: string[]; }) => void;	Emit when wallet app changes its wallet-standard features
change	(params: { chain?: string, account?: WalletAccount; features?: string[]; }) => void;	Raw change event defined by wallet-standard

Deprecated API

signAndExecuteTransaction

Deprecated, use signAndExecuteTransactionBlock instead.

executeMoveCall and executeSerializedMoveCall

Deprecated, use signAndExecuteTransactionBlock instead.

wallet

Deprecated, use adapter instead.

const wallet = useWallet();
- console.log(wallet.wallet.name);
+ console.log(wallet.adapter.name);

getPublicKey

Deprecated, use account.publicKey instead.

const wallet = useWallet();
- console.log(wallet.getPublicKey());
+ console.log(wallet.account.publicKey);

signMessage

Deprecated, use signPersonalMessage instead.

Type	Default
(input: {message: Uint8Array}) => Promise<{signature: string; messageBytes: string}>