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Yinr-libs

Useful functions for yinr

Fra og med 24.01.2023. Se Den nyeste version.

Dette script skal ikke installes direkte. Det er et API for andre scripts der skal inkluderes med meta direktiv // @require https://update.greasyfork.org/scripts/458769/1141560/Yinr-libs.js 

// ==UserScript==
// @name               Yinr-libs
// @namespace          https://yinr.cc/
// @version            0.0.1
// @description        Useful functions for yinr
// @author             Yinr
// @license            GPL-v3
// ==/UserScript==

/** YinrLibs */
const YinrLibs = {
    /** 创建 DOM 监听
     * @param {Object} option
     * @param {(Element | string)} option.parentNode MutationObserver 绑定的 DOM 对象
     * @param {string} option.selector 需要监听变化的 selector
     * @param {voidCallback} [option.failCallback=callback] selector 不存在时执行的回调函数
     * @param {MutationCallback} [option.successCallback=null] selector 对象发生 Mutation 事件时执行的回调函数
     * @param {boolean} [option.stopWhenSuccess=true] 执行一次 `successCallback` 后立即解除监听
     * @param {MutationObserverInit} [option.config={childList: true, subtree: true}] MutationObserver 配置参数
     */
    launchObserver ({
        parentNode,
        selector,
        failCallback = null,
        successCallback = null,
        stopWhenSuccess = true,
        config = { childList: true, subtree: true }
    }) {
        if (!parentNode) return
        /** @type {MutationCallback} */
        const observeFunc = mutationList => {
            if (!document.querySelector(selector)) {
                if (failCallback) failCallback()
                return
            }
            if (stopWhenSuccess) observer.disconnect()

            mutationList.itemFilter = (fn, type = 'addedNodes') => mutationList.map(i => Array.from(i[type]).filter(fn)).reduce((arr, val) => arr.concat(val), [])

            if (successCallback) successCallback(mutationList)
        }
        const observer = new MutationObserver(observeFunc)
        observer.observe(parentNode, config)
    }
};