Slack Code Copy Button

在 Slack 的网页版代码块上添加复制按钮

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

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// ==UserScript==
// @name         Slack Code Copy Button
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  在 Slack 的网页版代码块上添加复制按钮
// @author       sbill
// @match        https://*.slack.com/*
// @grant        none
// @license MIT
// ==/UserScript==

(function () {
  'use strict'
  // 创建一个观察器,监听 DOM 变化
  const observer = new MutationObserver(mutations => {
    // 当 <pre> 元素插入页面时
    mutations.forEach(mutation => {
      if (mutation.addedNodes.length > 0) {
        // 查找插入的 <pre> 元素
        const pres = mutation.target.querySelectorAll('.c-mrkdwn__pre')
        // 遍历每个 <pre> 并添加复制按钮
        pres.forEach(pre => {
          // 在 <pre> 上添加复制按钮
          if (pre.querySelector('button')) {
            return
          }
          const copyButton = document.createElement('button')
          copyButton.innerText = '复制'
          copyButton.className = 'c-button c-button--primary c-button--small'
          copyButton.style.position = 'absolute'
          copyButton.style.right = 0
          copyButton.style.top = 0
          pre.style.position = 'relative'
          pre.appendChild(copyButton)

          // 点击复制按钮,将 <pre> 内容复制到剪贴板
          copyButton.addEventListener('click', () => {
            const button = pre.querySelector('button')
            pre.removeChild(button)
            const code = pre.innerText
            // 将修复后的文本复制到剪贴板
            navigator.clipboard.writeText(code)
            // 显示成功提示 
            const prompt = document.createElement('div')
            prompt.innerText = '复制成功!'
            prompt.style.position = 'fixed'
            prompt.style.top = '50px'
            prompt.style.right = '50%'
            prompt.style.transform = 'translateX(50%)'
            prompt.style.padding = '10px 20px'
            prompt.style.background = 'grey'
            prompt.style.borderRadius = '4px'
            prompt.style.zIndex = 222
            prompt.style.color = 'lightpink'
            document.body.appendChild(prompt)

            // 2 秒后自动移除提示
            setTimeout(() => {
              document.body.removeChild(prompt)
            }, 2000)
          })
        })
      }
    })
  })

  // 以根元素为监听目标,监听子节点变动
  observer.observe(document.body, {
    childList: true,
    subtree: true
  })
})()