VibeUI

Code Block

Height Cap

A code block capped by height rather than by line count: the expansion animates, the cut is shown by a mask, and a hidden checkbox holds the state.

  • code
  • collapse
  • height
  • no-js

Preview

1440pxHost theme

Use it with AI

  1. 1. Copy the link.
  2. 2. Write to your agent in your own words and drop the link into the sentence.
  3. 3. The agent opens the link and installs the component from the registry.

put this in the header: https://vibeui.ru/c/codeblock-025?lang=en

lib/pricing.ts
export type Plan = "free" | "pro" | "team"

const PRICE: Record<Plan, number> = {
  free: 0,
  pro: 1290,
  team: 4900,
}

export function priceOf(plan: Plan, months = 1) {
  const base = PRICE[plan] * months

  if (months >= 12) {
    return Math.round(base * 0.8)
  }

  return base
}
Show the full instructions

What the link says, spelled out. Use it when your agent cannot open links — paste this text instead.

# Install and place "codeblock-025" (Height Cap) from VibeUI

## 1. Install first — do not skip, do not recreate
Run this exact command before writing any code:
npx shadcn@latest add https://vibeui.ru/r/codeblock-025.json

Registry item: https://vibeui.ru/r/codeblock-025.json
Installs to: components/vibeui/codeblock-025.tsx (the exact path follows this project's components.json aliases).
npm dependencies: none.
Registry dependencies: none.

Install it from the registry. Do not recreate it from the description,
do not substitute a similar component from another library, and do not
rewrite it to match the project's existing style.

## 2. What it is
A code block capped by height rather than by line count: the expansion animates, the cut is shown by a mask, and a hidden checkbox holds the state.

A code block with a height cap and an expand button: an animated max-height, a fade mask, state on a checkbox. Zero dependencies, no client JS.

## 3. How to use it
import { Codeblock025 } from "@/components/vibeui/codeblock-025"

<Codeblock025
  path="lib/pricing.ts"
  collapsedHeight={9}
  expandedHeight={32}
/>

Read the installed file for the full prop list.

## 4. Where to place it
This is a small inline component. Put it exactly where the user asked,
inside the existing markup. Do not create a new page, section or
wrapper for it. If a similar control already sits in that spot,
replace it instead of adding a second one.

Placement: ___
(The user fills this line in. If it is still blank, ask where to put it
instead of guessing.)

## 5. Keep exactly as installed
- the local --vibeui-codeblock-025-* palette — do not swap it for your theme tokens
- the checkbox as the source of state: with useState the block stops working before hydration
- the bottom mask only while collapsed: when open it hides real code
- the changing toggle caption: "Expand" and "Collapse" are different promises
- the focus ring on the label, or keyboard users cannot tell what is being expanded
- the dark surface of the block — light monospaced text is unreadable without it

## 6. You may change
- the block code through code
- the file path through path
- the collapsed height through collapsedHeight
- the expansion limit through expandedHeight

## 7. Rules
- The animation runs between two max-height values: on short code the expansion feels faster.
- An expandedHeight smaller than the content turns on scrolling inside the block — that is normal.
- The height is in rem and follows the page font size: in dense layouts pick it again.
- Do not lift the CSS variables into globals.css: the component has to stay a single file.

## 8. Verify
- it renders with no console errors;
- it looks like the preview on the VibeUI page you copied this from;
- if it does not, you changed something listed in section 5 — put it back.

For developers

npx shadcn@latest add https://vibeui.ru/r/codeblock-025.json
https://vibeui.ru/r/codeblock-025.json

Компонент самодостаточен: один файл, без зависимостей, собственная палитра в локальных переменных --vibeui-codeblock-025-*. Серверный: состояние держит нативный checkbox, корневой селектор :has(input:checked) переводит область кода с высоты свёрнутого блока на предел раскрытия. Обе высоты приходят пропсами и уезжают в CSS-переменные, поэтому анимация max-height идёт между двумя известными значениями, а не до auto. Маска нижнего края включена только в свёрнутом виде, подпись переключателя меняется парой span, спрятанных через :has().

Component source

The same file your agent installs. Here in case you would rather copy it by hand.

import type { CSSProperties } from "react"

export type Codeblock025Props = {
  path?: string
  collapsedHeight?: number
  expandedHeight?: number
  code?: string
  className?: string
  style?: CSSProperties
}

// Идея компонента: длинный файл, ограниченный по высоте, а не по числу строк.
// Высоту держит max-height, состояние — скрытый чекбокс, поэтому раскрытие
// анимируется и работает без JS; обрыв показан маской, которая гаснет сама.
const STYLES = `
:where([data-vibeui-block="codeblock-025"]){
--vibeui-codeblock-025-bg:oklch(0.2 0.02 320);
--vibeui-codeblock-025-head:oklch(0.24 0.024 320);
--vibeui-codeblock-025-fg:oklch(0.93 0.008 320);
--vibeui-codeblock-025-muted:oklch(0.67 0.018 320);
--vibeui-codeblock-025-border:oklch(1 0 0 / 12%);
--vibeui-codeblock-025-accent:oklch(0.82 0.13 320);
--vibeui-codeblock-025-collapsed:9rem;
--vibeui-codeblock-025-expanded:32rem;
--vibeui-codeblock-025-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
--vibeui-codeblock-025-font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
[data-vibeui-block="codeblock-025"]{
display:flex;flex-direction:column;
width:100%;max-width:32rem;box-sizing:border-box;margin:0;overflow:hidden;
border:1px solid var(--vibeui-codeblock-025-border);border-radius:0.75rem;
background:var(--vibeui-codeblock-025-bg);color:var(--vibeui-codeblock-025-fg);
font-family:var(--vibeui-codeblock-025-font);
}
[data-vibeui-block="codeblock-025"] [data-part="head"]{
padding:0.5rem 0.875rem;
background:var(--vibeui-codeblock-025-head);
border-bottom:1px solid var(--vibeui-codeblock-025-border);
font-family:var(--vibeui-codeblock-025-mono);font-size:0.75rem;
color:var(--vibeui-codeblock-025-muted);
}
[data-vibeui-block="codeblock-025"] [data-part="body"]{
max-height:var(--vibeui-codeblock-025-collapsed);overflow:hidden;
transition:max-height .32s cubic-bezier(.32,.72,0,1);
}
/* Пока блок свёрнут, низ гаснет: обрыв обязан читаться как «здесь ещё есть
   код», иначе кнопка «развернуть» выглядит бессмысленной. */
[data-vibeui-block="codeblock-025"]:not(:has(input:checked)) [data-part="body"]{
mask-image:linear-gradient(to bottom,#000 60%,oklch(0 0 0 / 15%) 100%);
}
[data-vibeui-block="codeblock-025"]:has(input:checked) [data-part="body"]{
max-height:var(--vibeui-codeblock-025-expanded);overflow:auto;
}
[data-vibeui-block="codeblock-025"] pre{margin:0;padding:0.75rem 0.875rem}
[data-vibeui-block="codeblock-025"] code{
display:block;min-width:max-content;
font-family:var(--vibeui-codeblock-025-mono);
font-size:0.8125rem;line-height:1.65;white-space:pre;
}
[data-vibeui-block="codeblock-025"] label{
cursor:pointer;display:flex;align-items:center;justify-content:center;gap:0.375rem;
padding:0.5rem 0.875rem;
border-top:1px solid var(--vibeui-codeblock-025-border);
background:var(--vibeui-codeblock-025-head);
font-size:0.75rem;font-weight:650;color:var(--vibeui-codeblock-025-accent);
transition:background-color .16s ease;
}
[data-vibeui-block="codeblock-025"] label:hover{background:oklch(1 0 0 / 8%)}
[data-vibeui-block="codeblock-025"] label:has(input:focus-visible){
outline:2px solid var(--vibeui-codeblock-025-accent);outline-offset:-2px;
}
[data-vibeui-block="codeblock-025"] label::after{
content:"▾";transition:transform .2s ease;
}
[data-vibeui-block="codeblock-025"] input{
position:absolute;width:1px;height:1px;margin:-1px;padding:0;
border:0;clip-path:inset(50%);overflow:hidden;white-space:nowrap;
}
[data-vibeui-block="codeblock-025"] label:has(input:checked)::after{transform:rotate(180deg)}
[data-vibeui-block="codeblock-025"] label:has(input:checked) [data-part="more"]{display:none}
[data-vibeui-block="codeblock-025"] label:not(:has(input:checked)) [data-part="less"]{display:none}
@media (prefers-reduced-motion:reduce){[data-vibeui-block="codeblock-025"] *{animation:none!important;transition:none!important}}
`

const CODE = `export type Plan = "free" | "pro" | "team"

const PRICE: Record<Plan, number> = {
  free: 0,
  pro: 1290,
  team: 4900,
}

export function priceOf(plan: Plan, months = 1) {
  const base = PRICE[plan] * months

  if (months >= 12) {
    return Math.round(base * 0.8)
  }

  return base
}`

/** Блок кода с ограничением высоты и кнопкой «развернуть». */
export function Codeblock025({
  path = "lib/pricing.ts",
  collapsedHeight = 9,
  expandedHeight = 32,
  code = CODE,
  className,
  style,
}: Codeblock025Props) {
  const palette = {
    "--vibeui-codeblock-025-collapsed": `${collapsedHeight}rem`,
    "--vibeui-codeblock-025-expanded": `${expandedHeight}rem`,
    ...style,
  } as CSSProperties

  return (
    <>
      <style href="vibeui-codeblock-025" precedence="medium">
        {STYLES}
      </style>
      <figure
        data-vibeui-block="codeblock-025"
        className={className}
        style={palette}
      >
        <figcaption data-part="head">{path}</figcaption>
        <div data-part="body">
          <pre>
            <code>{code}</code>
          </pre>
        </div>
        <label>
          <input type="checkbox" />
          <span data-part="more">Развернуть</span>
          <span data-part="less">Свернуть</span>
        </label>
      </figure>
    </>
  )
}