META-INF.resources.ddm_template_editor.hooks.useChannel.js Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
import {useState} from 'react';
export function useChannel() {
const [channel] = useState(() => {
const listeners = new Set();
return {
onData(callback) {
listeners.add(callback);
return () => {
listeners.delete(callback);
};
},
sendData(data) {
listeners.forEach((callback) => {
callback(data);
});
},
};
});
return channel;
}