yoni-mcscripts-lib/yoni/event/decorators/EventHandler.js

为 Minecraft Script API 中的部分接口创建了 wrapper，并提供简单的事件管理器和任务管理器，另附有一些便于代码编写的一些小工具。

import { getListenerData } from "./EventListener.js";
import { EventPriority } from "../EventPriority.js";
export function EventHandler(options) {
    function EventHandlerMethodDecorator(target, propKey, desc) {
        const onEvent = target[propKey];
        const data = getListenerData(target);
        const listeners = data.registeredListeners;
        if (!data)
            throw new TypeError("no EventListener data found, try decorate the class with @EventListener");
        const handler = {
            onEvent: function (event) {
                listeners.forEach(listener => {
                    Reflect.apply(onEvent, listener, [event]);
                });
            },
            ignoreCancelled: options.ignoreCancelled ?? true,
            options: options.options
        };
        data.handlerEntries.push([options.event, options.priority ?? EventPriority.NORMAL, handler]);
    }
    return EventHandlerMethodDecorator;
}