# react-example-drop-cursor

> Visual cursor indicator during drag-and-drop operations.

A shadcn/ui block from the [@prosekit](https://prosekit.dev) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/prosekit/react-example-drop-cursor).

- Page, with a live preview: https://shadcn.exchange/r/prosekit/react-example-drop-cursor
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/prosekit/react-example-drop-cursor-light-581ee9984d27487e.png
- Registry item: https://prosekit.dev/r/react-example-drop-cursor.json
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://prosekit.dev/r/react-example-drop-cursor.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- npm packages: `prosekit`
- Registry items: `https://unpkg.com/prosekit-registry/dist/r/react-sample-sample-doc-drop-cursor.json`

## Files

### `registry/src/react/examples/drop-cursor/editor.tsx`

```tsx
'use client'

import 'prosekit/basic/style.css'
import 'prosekit/basic/typography.css'

import { createEditor, type NodeJSON } from 'prosekit/core'
import { ProseKit } from 'prosekit/react'
import { useMemo } from 'react'

import { sampleContent } from '../../sample/sample-doc-drop-cursor.ts'

import { defineExtension } from './extension.ts'

interface EditorProps {
  initialContent?: NodeJSON
}

export default function Editor(props: EditorProps) {
  const defaultContent = props.initialContent ?? sampleContent
  const editor = useMemo(() => {
    const extension = defineExtension()
    return createEditor({ extension, defaultContent })
  }, [defaultContent])

  return (
    <ProseKit editor={editor}>
      <div className="box-border h-full w-full min-h-36 overflow-y-hidden overflow-x-hidden rounded-md border border-solid border-gray-200 dark:border-gray-700 shadow-sm flex flex-col bg-[canvas] text-black dark:text-white">
        <div className="relative w-full flex-1 box-border overflow-y-auto">
          <div ref={editor.mount} className="ProseMirror box-border min-h-full px-[max(4rem,calc(50%-20rem))] py-8 outline-hidden outline-0 [&_span[data-mention=user]]:text-blue-500 [&_span[data-mention=tag]]:text-violet-500"></div>
        </div>
      </div>
    </ProseKit>
  )
}
```

### `registry/src/react/examples/drop-cursor/extension.ts`

```ts
import { defineBaseKeymap, union } from 'prosekit/core'
import { defineDoc } from 'prosekit/extensions/doc'
import { defineDropCursor } from 'prosekit/extensions/drop-cursor'
import { defineImage } from 'prosekit/extensions/image'
import { defineParagraph } from 'prosekit/extensions/paragraph'
import { defineText } from 'prosekit/extensions/text'

export function defineExtension() {
  return union(
    defineBaseKeymap(),
    defineDoc(),
    defineText(),
    defineParagraph(),
    defineImage(),
    defineDropCursor({
      color: false,
      width: 4,
      class: 'transition-all bg-blue-500',
    }),
  )
}

export type EditorExtension = ReturnType<typeof defineExtension>
```

### `registry/src/react/examples/drop-cursor/index.ts`

```ts
export { default as ExampleEditor } from './editor.tsx'
```