shortcut-key-js/src/helper/listener-maps.js

js按键,组合键监听

import { formatKey2Unit } from './index.js';

// 维护当前按键监听的回调函数映射
const listenerMaps = {};

// 根据回调函数获取事件监听的相关信息
export const getItem = function(keyCombination, fn) {
	const _keyCombination = formatKey2Unit(keyCombination).join('+')
	
	for (let key in listenerMaps) {
		if (listenerMaps[key].combination === _keyCombination && listenerMaps[key].callback === fn) return [key, listenerMaps[key]];
	}
	return [];
}

// 添加一条回调函数记录
export function setItem(keyCombination, callback, data) {
	listenerMaps[`key_${Math.random().toString(16).slice(-6)}`] = {
		...data,
		callback,
		combination: formatKey2Unit(keyCombination).join('+')
	};
}

// 移除一条回调函数记录
export function removeItem(keyCombination, callback) {
	const listener = getItem(keyCombination, callback);
	
	if (listener.length === 2) {
		delete listenerMaps[listener[0]];
	}
	return listener;
}

export default { setItem, getItem, removeItem };