69 lines
2.0 KiB
JavaScript
69 lines
2.0 KiB
JavaScript
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// Copyright 2015, 2016 Parity Technologies (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 PromiseWorker from 'promise-worker';
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import runtime from 'serviceworker-webpack-plugin/lib/runtime';
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import { setWorker } from './workerActions';
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function getWorker () {
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// Setup the Service Worker
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if ('serviceWorker' in navigator) {
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return runtime
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.register()
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.then(() => navigator.serviceWorker.ready)
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.then((registration) => {
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const worker = registration.active;
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worker.controller = registration.active;
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return new PromiseWorker(worker);
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});
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}
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return Promise.reject('Service Worker is not available in your browser.');
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}
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export const setupWorker = (store) => {
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const { dispatch, getState } = store;
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const state = getState();
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const stateWorker = state.worker.worker;
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if (stateWorker !== undefined && !(stateWorker && stateWorker._worker.state === 'redundant')) {
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return;
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}
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getWorker()
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.then((worker) => {
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if (worker) {
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worker._worker.addEventListener('statechange', (event) => {
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console.warn('worker state changed to', worker._worker.state);
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// Re-install the new Worker
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if (worker._worker.state === 'redundant') {
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setupWorker(store);
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}
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});
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}
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dispatch(setWorker(worker));
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})
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.catch((error) => {
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console.error('sw', error);
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dispatch(setWorker(null));
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});
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};
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