46 lines
1.6 KiB
JavaScript
46 lines
1.6 KiB
JavaScript
/*
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* Copyright (C) 2019-2020 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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class BackendApiForwarder {
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constructor() {
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chrome.runtime.onConnect.addListener(this.onConnect.bind(this));
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}
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onConnect(port) {
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if (port.name !== 'backend-api-forwarder') { return; }
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let tabId;
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if (!(
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port.sender &&
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port.sender.tab &&
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(typeof (tabId = port.sender.tab.id)) === 'number'
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)) {
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port.disconnect();
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return;
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}
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const forwardPort = chrome.tabs.connect(tabId, {name: 'frontend-api-receiver'});
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port.onMessage.addListener((message) => forwardPort.postMessage(message));
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forwardPort.onMessage.addListener((message) => port.postMessage(message));
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port.onDisconnect.addListener(() => forwardPort.disconnect());
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forwardPort.onDisconnect.addListener(() => port.disconnect());
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}
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}
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