Shared library for TankTrouble userscript development
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/482092/1301930/TankTrouble%20Development%20Library.js
// ==UserScript==
// @name TankTrouble Development Library
// @author commander
// @namespace https://github.com/asger-finding
// @version 0.0.5
// @license GPL-3.0
// @description Shared library for TankTrouble userscript development
// @match *://*.tanktrouble.com/*
// @grant none
// @run-at document-start
// @noframes
// ==/UserScript==
/* eslint-disable no-unused-vars */
class Loader {
/**
* Pass a function to a hook with the correct context
* @param context Function context (e.g `window`)
* @param funcName Function identifier in the context
* @param hook Hook to call before the original
*/
static hookFunction(context, funcName, hook) {
const original = Reflect.get(context, funcName);
if (typeof original !== 'function') throw new Error('Item passed is not typeof function');
Reflect.defineProperty(context, funcName, {
/**
* Call the hook with the original function bound to its context
* and supply with the arguments list
* @param args Arguments passed from outside
* @returns Original function return value
*/
value: (...args) => hook(original.bind(context), ...args)
});
}
/**
* Fires when the `main()` function is done on TankTrouble.
* @returns Promise that resolves when Content.init() finishes
*/
static whenContentInitialized() {
if (GM.info.script.runAt !== 'document-start') return Loader.#hookContentInit();
return whenContentLoaded().then(() => Loader.#hookContentInit());
}
/**
* Fires when the document is readyState `interactive` or `complete`
* @returns Promise that resolves upon content loaded
*/
static whenContentLoaded() {
return new Promise(resolve => {
if (document.readyState === 'interactive' || document.readyState === 'complete') resolve();
else document.addEventListener('DOMContentLoaded', () => resolve());
});
}
/**
* Apply a hook to the Content.init function which resolves when the promise ends
* @returns Promise when Content.init has finished
* @private
*/
static #hookContentInit() {
return new Promise(resolve => {
const { init } = Content;
Reflect.defineProperty(Content, 'init', {
/**
* Resolve after Content.init call finishes
* @param args Arguments to pass
* @returns Function call return value
*/
value: (...args) => {
const result = init(...args);
resolve();
return result;
}
});
});
}
}