Hedera Hashgraph Extension Wallet

This wallet was created for the Hedera Hashgraph hackathon. It supports all hashgraph actions such as transfer, token create, etc.

Installation

Grab the latest release from this repository
Open up chrome and navigate to chrome://extensions/
Drag the zip file onto that page
Open the wallet from the top right extension icon, and import your accounts.

Application integration

$ npm i -S @hashgraph/sdk@^2

const { Client, TransferTransaction } = require("@hashgraph/sdk");

let wallet;

document.addEventListener('hederaWalletLoaded', async () => {
    // Grab the injected wallet from the window object
    wallet = window.wallet;

    // Testnet, Mainnet, or Previewnet
    const account = await wallet.login('Testnet');

    // Instantiate a client
    const client = Client.forTestnet();

    // Set the operator for signing to the signer from the wallet
    client.setOperatorWith(
        account.id,
        account.publicKey,
        wallet.getTransactionSigner()
    );

    // You can now use any Hashgraph SDK transaction builders,
    // and execute using this client.
    const executed = await new TransferTransaction()
        .addHbarTransfer(wallet.account.id, Hbar.fromTinybars(-1))
        .addHbarTransfer('some.other.id', Hbar.fromTinybars(1))
        .signWithOperator(client)
        .execute(client);

    console.log(await executed.getReceipt(client));
})

Injected APIs

Account Object

{
    id:string           // Example: 0.0.123456
    publicKey:string,   // Example: 302a30050....
    network:string,     // Example: Testnet
}

APIs

wallet.login(network:string) - Requests a login from the user
wallet.logout() - Logs out of the user's wallet
wallet.account - Will be populated with an account instance after calling login()
wallet.addAccount(network:string, id:string, privateKey:string) - Requests that the user add a specific account to their wallet. This is a utility for account creation processes.
wallet.getTransactionSigner() - Returns a transaction signer that can be used with the SDK's client.setOperatorWith

Note: Logins persist past page reload. When the page first loads you can check wallet.account to see if there is already a login permission in place.

nsjames / iv-extension