// ==UserScript==
// @name         剪贴板版权信息去除
// @namespace    https://github.com/jin-lin0/tampermonkey-demo
// @version      0.3
// @description  2023/9/22 14:34:30
// @author       logyes
// @license      MPL-2.0

// @match        *://juejin.cn/*
// @match        *://leetcode.cn/*
// @match        *://*.jianshu.com/*
// @match        *://*.csdn.net/*
// @match        *://*.zhihu.com/*
// @match        *://*.nowcoder.com/*

// @icon         https://www.google.com/s2/favicons?sz=64&domain=greasyfork.org
// @grant        none
// @downloadURL none
// ==/UserScript==

(function () {
  "use strict";

  function getCopiedContent() {
    const selection = window.getSelection();
    const range = selection.getRangeAt(0);
    const container = document.createElement("div");
    container.appendChild(range.cloneContents());
    return {
      text: range.toString(),
      html: container.innerHTML,
    };
  }

  document.addEventListener("copy", function (e) {
    const copiedContent = getCopiedContent();
    if (copiedContent.text) {
      let clipboardData = e.clipboardData || window.clipboardData;
      clipboardData.setData("text/plain", copiedContent.text);
      clipboardData.setData("text/html", copiedContent.html);
      e.preventDefault();
    }
  });
})();