VibeUI

Code Block

Changed Line

A listing that marks the line edited a moment ago: a bar, a tint and a short flash that fades on its own instead of blinking forever.

  • code
  • highlight
  • changed
  • edit

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-017?lang=en

components/cart.tsxизменено только что
export function cartTotal(items: Item[]) {  return items.reduce(    (sum, item) => sum + item.price * item.count,    0,  )}
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-017" (Changed Line) 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-017.json

Registry item: https://vibeui.ru/r/codeblock-017.json
Installs to: components/vibeui/codeblock-017.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 listing that marks the line edited a moment ago: a bar, a tint and a short flash that fades on its own instead of blinking forever.

A listing with the last changed line marked: a bar, a tint and a one-shot flash. Zero dependencies, no client JS.

## 3. How to use it
import { Codeblock017 } from "@/components/vibeui/codeblock-017"

<Codeblock017
  path="components/cart.tsx"
  changedLine={3}
  agoLabel="changed just now"
/>

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-017-* palette — do not swap it for your theme tokens
- the single-run flash: an endless animation turns the block into a blinker and blocks reading
- the final keyframe equal to the tint colour — otherwise the mark disappears once the animation ends
- the sign in ::after next to the colour: a tint alone is unreadable for colour blindness and in print
- line numbers and the sign in pseudo-elements so they never travel to the clipboard with the code
- the prefers-reduced-motion rule: a flash is an irritant for some people

## 6. You may change
- the listing rows through the lines array
- the file path through path
- the changed line number through changedLine
- the time caption through agoLabel and the mark hue

## 7. Rules
- Exactly one line is marked: for a set of changes use a diff block instead.
- The flash plays once when the block appears; replaying it is impossible without client JS.
- A changedLine outside the row list simply highlights nothing: bounds are the caller's job.
- 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-017.json
https://vibeui.ru/r/codeblock-017.json

Компонент самодостаточен: один файл, без зависимостей, собственная палитра в локальных переменных --vibeui-codeblock-017-*. Серверный: хуков нет. Номер строки печатает CSS-счётчик в ::before, отметку изменения — ::after, поэтому ни цифра, ни знак не уезжают в буфер обмена. Изменение помечено тремя независимыми признаками: полосой слева через inset box-shadow, полупрозрачной подложкой и однократной анимацией вспышки. Последний кадр анимации равен цвету подложки, поэтому после её завершения отметка остаётся на месте, а не исчезает.

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 Codeblock017Props = {
  path?: string
  changedLine?: number
  agoLabel?: string
  lines?: string[]
  className?: string
  style?: CSSProperties
}

// Идея компонента: показать, что именно поменялось только что. Не диф целиком,
// а одна строка: она получает метку в поле номеров, подложку и короткую
// вспышку, которая гаснет сама и не оставляет мигающего элемента на экране.
const STYLES = `
:where([data-vibeui-block="codeblock-017"]){
--vibeui-codeblock-017-bg:oklch(0.2 0.016 150);
--vibeui-codeblock-017-head:oklch(0.24 0.02 150);
--vibeui-codeblock-017-fg:oklch(0.93 0.008 150);
--vibeui-codeblock-017-muted:oklch(0.67 0.016 150);
--vibeui-codeblock-017-gutter:oklch(0.52 0.02 150);
--vibeui-codeblock-017-border:oklch(1 0 0 / 12%);
--vibeui-codeblock-017-mark:oklch(0.82 0.15 152);
--vibeui-codeblock-017-tint:oklch(0.6 0.14 152 / 16%);
--vibeui-codeblock-017-flash:oklch(0.7 0.16 152 / 42%);
--vibeui-codeblock-017-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
--vibeui-codeblock-017-font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
[data-vibeui-block="codeblock-017"]{
display:flex;flex-direction:column;
width:100%;max-width:34rem;box-sizing:border-box;margin:0;overflow:hidden;
border:1px solid var(--vibeui-codeblock-017-border);border-radius:0.75rem;
background:var(--vibeui-codeblock-017-bg);color:var(--vibeui-codeblock-017-fg);
font-family:var(--vibeui-codeblock-017-font);
}
[data-vibeui-block="codeblock-017"] [data-part="head"]{
display:flex;align-items:center;justify-content:space-between;gap:0.75rem;
padding:0.5rem 0.875rem;
background:var(--vibeui-codeblock-017-head);
border-bottom:1px solid var(--vibeui-codeblock-017-border);
font-size:0.75rem;color:var(--vibeui-codeblock-017-muted);
}
[data-vibeui-block="codeblock-017"] [data-part="path"]{
font-family:var(--vibeui-codeblock-017-mono);
}
[data-vibeui-block="codeblock-017"] [data-part="ago"]{
display:inline-flex;align-items:center;gap:0.375rem;flex:none;
color:var(--vibeui-codeblock-017-mark);font-weight:650;
}
[data-vibeui-block="codeblock-017"] [data-part="ago"]::before{
content:"";width:0.4375rem;height:0.4375rem;border-radius:50%;
background:currentColor;
}
[data-vibeui-block="codeblock-017"] pre{margin:0;padding:0.625rem 0;overflow-x:auto}
[data-vibeui-block="codeblock-017"] code{
display:block;min-width:max-content;
font-family:var(--vibeui-codeblock-017-mono);
font-size:0.8125rem;line-height:1.7;white-space:pre;
counter-reset:line;
}
[data-vibeui-block="codeblock-017"] [data-part="row"]{
display:block;position:relative;padding:0 0.875rem 0 3.25rem;
}
[data-vibeui-block="codeblock-017"] [data-part="row"]::before{
counter-increment:line;content:counter(line);
position:absolute;left:0;width:2.25rem;text-align:right;
color:var(--vibeui-codeblock-017-gutter);font-variant-numeric:tabular-nums;
user-select:none;-webkit-user-select:none;pointer-events:none;
}
/* Отметка в поле номеров живёт отдельно от подложки: цвет один читается
   плохо, а знак остаётся виден и в печати, и при дальтонизме. */
[data-vibeui-block="codeblock-017"] [data-part="row"][data-changed="true"]::after{
content:"▸";position:absolute;left:2.5rem;
color:var(--vibeui-codeblock-017-mark);
user-select:none;-webkit-user-select:none;pointer-events:none;
}
[data-vibeui-block="codeblock-017"] [data-part="row"][data-changed="true"]{
background:var(--vibeui-codeblock-017-tint);
box-shadow:inset 0.1875rem 0 0 var(--vibeui-codeblock-017-mark);
animation:vibeui-codeblock-017-flash 2.4s ease-out 1;
}
@keyframes vibeui-codeblock-017-flash{
from{background:var(--vibeui-codeblock-017-flash)}
to{background:var(--vibeui-codeblock-017-tint)}
}
@media (prefers-reduced-motion:reduce){[data-vibeui-block="codeblock-017"] *{animation:none!important;transition:none!important}}
`

const LINES = [
  "export function cartTotal(items: Item[]) {",
  "  return items.reduce(",
  "    (sum, item) => sum + item.price * item.count,",
  "    0,",
  "  )",
  "}",
]

/** Листинг с отметкой строки, изменённой последней правкой. */
export function Codeblock017({
  path = "components/cart.tsx",
  changedLine = 3,
  agoLabel = "изменено только что",
  lines = LINES,
  className,
  style,
}: Codeblock017Props) {
  return (
    <>
      <style href="vibeui-codeblock-017" precedence="medium">
        {STYLES}
      </style>
      <figure
        data-vibeui-block="codeblock-017"
        className={className}
        style={style}
      >
        <figcaption data-part="head">
          <span data-part="path">{path}</span>
          <span data-part="ago">{agoLabel}</span>
        </figcaption>
        <pre>
          <code>
            {lines.map((line, index) => (
              <span
                key={index}
                data-part="row"
                data-changed={index + 1 === changedLine || undefined}
                aria-current={index + 1 === changedLine ? "true" : undefined}
              >
                {line}
              </span>
            ))}
          </code>
        </pre>
      </figure>
    </>
  )
}