openethereum/js/src/inject.js

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import 'whatwg-fetch';
import Api from '@parity/api';
import Web3 from 'web3';
import web3extensions from './web3.extensions';
function initProvider () {
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const parts = window.location.pathname.split('/');
let appId = parts[1];
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if (appId === 'dapps') {
appId = parts[2];
} else if (!Api.util.isHex(appId)) {
appId = Api.util.sha3(appId);
}
const ethereum = new Api.Provider.PostMessage(appId);
console.log(`Requesting API communications token for ${appId}`);
ethereum
.requestNewToken()
.then((tokenId) => {
console.log(`Received API communications token ${tokenId}`);
})
.catch((error) => {
console.error('Unable to retrieve communications token', error);
});
window.ethereum = ethereum;
return ethereum;
}
function initWeb3 (ethereum) {
// FIXME: Use standard provider for web3
const http = new Web3.providers.HttpProvider('/rpc/');
const web3 = new Web3(http);
// set default account
web3.eth.getAccounts((error, accounts) => {
if (error || !accounts || !accounts[0]) {
return;
}
web3.eth.defaultAccount = accounts[0];
});
web3extensions(web3).map((extension) => web3._extend(extension));
window.web3 = web3;
}
function initParity (ethereum) {
const api = new Api(ethereum);
window.parity = {
Api,
api
};
}
const ethereum = initProvider();
initWeb3(ethereum);
initParity(ethereum);
console.warn('Deprecation: Dapps should only used the exposed EthereumProvider on `window.ethereum`, the use of `window.parity` and `window.web3` will be removed in future versions of this injector');