106 lines
2.9 KiB
JavaScript
106 lines
2.9 KiB
JavaScript
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// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import BigNumber from 'bignumber.js';
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import { action, observable, transaction } from 'mobx';
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import { ERRORS, validatePositiveNumber } from '~/util/validation';
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import { DEFAULT_GAS, DEFAULT_GASPRICE, MAX_GAS_ESTIMATION } from '~/util/constants';
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export default class GasPriceEditor {
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@observable errorEstimated = null;
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@observable errorGas = null;
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@observable errorPrice = null;
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@observable estimated = DEFAULT_GAS;
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@observable histogram = null;
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@observable price = DEFAULT_GASPRICE;
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@observable priceDefault = DEFAULT_GASPRICE;
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@observable gas = DEFAULT_GAS;
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@observable gasLimit = 0;
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constructor (api, gasLimit, loadDefaults = true) {
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this._api = api;
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this.gasLimit = gasLimit;
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if (loadDefaults) {
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this.loadDefaults();
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}
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}
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@action setEstimated = (estimated) => {
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transaction(() => {
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const bn = new BigNumber(estimated);
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this.estimated = estimated;
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if (bn.gte(MAX_GAS_ESTIMATION)) {
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this.errorEstimated = ERRORS.gasException;
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} else if (bn.gte(this.gasLimit)) {
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this.errorEstimated = ERRORS.gasBlockLimit;
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} else {
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this.errorEstimated = null;
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}
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});
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}
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@action setHistogram = (gasHistogram) => {
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this.histogram = gasHistogram;
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}
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@action setPrice = (price) => {
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transaction(() => {
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this.errorPrice = validatePositiveNumber(price).numberError;
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this.price = price;
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});
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}
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@action setGas = (gas) => {
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transaction(() => {
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const { numberError } = validatePositiveNumber(gas);
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const bn = new BigNumber(gas);
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this.gas = gas;
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if (numberError) {
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this.errorGas = numberError;
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} else if (bn.gte(this.gasLimit)) {
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this.errorGas = ERRORS.gasBlockLimit;
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} else {
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this.errorGas = null;
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}
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});
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}
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@action loadDefaults () {
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Promise
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.all([
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this._api.parity.gasPriceHistogram(),
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this._api.eth.gasPrice()
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])
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.then(([gasPriceHistogram, gasPrice]) => {
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transaction(() => {
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this.setPrice(gasPrice.toFixed(0));
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this.setHistogram(gasPriceHistogram);
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this.priceDefault = gasPrice.toFixed();
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});
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})
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.catch((error) => {
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console.warn('getDefaults', error);
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});
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}
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}
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