复制按钮

为代码块添加复制按钮。

content.md

```js
function lorem(ipsum, dolor = 1) {
  const sit = ipsum == null ? 0 : ipsum.sit
  dolor = sit - amet(dolor)
  return sit ? consectetur(ipsum) : []
}
```

function lorem(ipsum, dolor = 1) {
  const sit = ipsum == null ? 0 : ipsum.sit
  dolor = sit - amet(dolor)
  return sit ? consectetur(ipsum) : []
}

Implementation

首先我们创建按钮组件：

button.tsx

"use client"

import { Copy, Check } from "lucide-react"
import { useState } from "react"

export function CopyButton({ text }: { text: string }) {
  const [copied, setCopied] = useState(false)

  return (
    <button
      className=""
      aria-label="复制到剪贴板"
      onClick={() => {
        navigator.clipboard.writeText(text)
        setCopied(true)
        setTimeout(() => setCopied(false), 1200)
      }}
    >
      {copied ? <Check size={16} /> : <Copy size={16} />}
    </button>
  )
}

然后在渲染代码块时使用它：

code.tsx

import { Pre, RawCode, highlight } from "codehike/code"
import { CopyButton } from "./button"

async function Code({ codeblock }: { codeblock: RawCode }) {
  const highlighted = await highlight(codeblock, "github-dark")

  return (
    <div className="">
      <CopyButton text={highlighted.code} />
      <Pre className="" code={highlighted} />
    </div>
  )
}