├── .eslintrc.json
├── src
    ├── app
    │   ├── favicon.ico
    │   ├── page.tsx
    │   ├── layout.tsx
    │   └── globals.css
    ├── lib
    │   └── utils.ts
    └── components
    │   ├── ui
    │       └── button.tsx
    │   ├── SortableRow.tsx
    │   └── List.tsx
├── next.config.mjs
├── postcss.config.mjs
├── components.json
├── .gitignore
├── public
    ├── vercel.svg
    └── next.svg
├── tsconfig.json
├── db
    ├── bad-example.json
    └── data.json
├── package.json
├── README.md
└── tailwind.config.ts


/.eslintrc.json:
--------------------------------------------------------------------------------
1 | {
2 |   "extends": "next/core-web-vitals"
3 | }
4 | 


--------------------------------------------------------------------------------
/src/app/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/gitdagray/react-drag-n-drop/HEAD/src/app/favicon.ico


--------------------------------------------------------------------------------
/next.config.mjs:
--------------------------------------------------------------------------------
1 | /** @type {import('next').NextConfig} */
2 | const nextConfig = {};
3 | 
4 | export default nextConfig;
5 | 


--------------------------------------------------------------------------------
/postcss.config.mjs:
--------------------------------------------------------------------------------
1 | /** @type {import('postcss-load-config').Config} */
2 | const config = {
3 |   plugins: {
4 |     tailwindcss: {},
5 |   },
6 | };
7 | 
8 | export default config;
9 | 


--------------------------------------------------------------------------------
/src/lib/utils.ts:
--------------------------------------------------------------------------------
1 | import { type ClassValue, clsx } from "clsx"
2 | import { twMerge } from "tailwind-merge"
3 | 
4 | export function cn(...inputs: ClassValue[]) {
5 |   return twMerge(clsx(inputs))
6 | }
7 | 


--------------------------------------------------------------------------------
/components.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "$schema": "https://ui.shadcn.com/schema.json",
 3 |   "style": "default",
 4 |   "rsc": true,
 5 |   "tsx": true,
 6 |   "tailwind": {
 7 |     "config": "tailwind.config.ts",
 8 |     "css": "src/app/globals.css",
 9 |     "baseColor": "stone",
10 |     "cssVariables": true,
11 |     "prefix": ""
12 |   },
13 |   "aliases": {
14 |     "components": "@/components",
15 |     "utils": "@/lib/utils"
16 |   }
17 | }


--------------------------------------------------------------------------------
/src/app/page.tsx:
--------------------------------------------------------------------------------
 1 | import { List } from "@/components/List"
 2 | 
 3 | const getData = async () => {
 4 |   const res = await fetch('http://localhost:3500/data')
 5 |   const data = await res.json()
 6 |   return data
 7 | }
 8 | 
 9 | export default async function Home() {
10 |   const data = await getData()
11 | 
12 |   return (
13 |     <main className="flex min-h-dvh p-8">
14 |       <List data={data} />
15 |     </main>
16 |   )
17 | }
18 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | .yarn/install-state.gz
 8 | 
 9 | # testing
10 | /coverage
11 | 
12 | # next.js
13 | /.next/
14 | /out/
15 | 
16 | # production
17 | /build
18 | 
19 | # misc
20 | .DS_Store
21 | *.pem
22 | 
23 | # debug
24 | npm-debug.log*
25 | yarn-debug.log*
26 | yarn-error.log*
27 | 
28 | # local env files
29 | .env*.local
30 | 
31 | # vercel
32 | .vercel
33 | 
34 | # typescript
35 | *.tsbuildinfo
36 | next-env.d.ts
37 | 


--------------------------------------------------------------------------------
/src/app/layout.tsx:
--------------------------------------------------------------------------------
 1 | import type { Metadata } from "next";
 2 | import { Inter } from "next/font/google";
 3 | import "./globals.css";
 4 | 
 5 | const inter = Inter({ subsets: ["latin"] });
 6 | 
 7 | export const metadata: Metadata = {
 8 |   title: "Create Next App",
 9 |   description: "Generated by create next app",
10 | };
11 | 
12 | export default function RootLayout({
13 |   children,
14 | }: Readonly<{
15 |   children: React.ReactNode;
16 | }>) {
17 |   return (
18 |     <html lang="en">
19 |       <body className={inter.className}>{children}</body>
20 |     </html>
21 |   );
22 | }
23 | 


--------------------------------------------------------------------------------
/public/vercel.svg:
--------------------------------------------------------------------------------
1 | <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 283 64"><path fill="black" d="M141 16c-11 0-19 7-19 18s9 18 20 18c7 0 13-3 16-7l-7-5c-2 3-6 4-9 4-5 0-9-3-10-7h28v-3c0-11-8-18-19-18zm-9 15c1-4 4-7 9-7s8 3 9 7h-18zm117-15c-11 0-19 7-19 18s9 18 20 18c6 0 12-3 16-7l-8-5c-2 3-5 4-8 4-5 0-9-3-11-7h28l1-3c0-11-8-18-19-18zm-10 15c2-4 5-7 10-7s8 3 9 7h-19zm-39 3c0 6 4 10 10 10 4 0 7-2 9-5l8 5c-3 5-9 8-17 8-11 0-19-7-19-18s8-18 19-18c8 0 14 3 17 8l-8 5c-2-3-5-5-9-5-6 0-10 4-10 10zm83-29v46h-9V5h9zM37 0l37 64H0L37 0zm92 5-27 48L74 5h10l18 30 17-30h10zm59 12v10l-3-1c-6 0-10 4-10 10v15h-9V17h9v9c0-5 6-9 13-9z"/></svg>


--------------------------------------------------------------------------------
/tsconfig.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "compilerOptions": {
 3 |     "lib": ["dom", "dom.iterable", "esnext"],
 4 |     "allowJs": true,
 5 |     "skipLibCheck": true,
 6 |     "strict": true,
 7 |     "noEmit": true,
 8 |     "esModuleInterop": true,
 9 |     "module": "esnext",
10 |     "moduleResolution": "bundler",
11 |     "resolveJsonModule": true,
12 |     "isolatedModules": true,
13 |     "jsx": "preserve",
14 |     "incremental": true,
15 |     "plugins": [
16 |       {
17 |         "name": "next"
18 |       }
19 |     ],
20 |     "paths": {
21 |       "@/*": ["./src/*"]
22 |     }
23 |   },
24 |   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
25 |   "exclude": ["node_modules"]
26 | }
27 | 


--------------------------------------------------------------------------------
/db/bad-example.json:
--------------------------------------------------------------------------------
 1 | {
 2 |     "data": [
 3 |         {
 4 |             "id": 1,
 5 |             "artist": "The Beatles",
 6 |             "title": "Hey Jude"
 7 |         },
 8 |         {
 9 |             "id": 2,
10 |             "artist": "Neil Young",
11 |             "title": "My My, Hey Hey"
12 |         },
13 |         {
14 |             "id": 3,
15 |             "artist": "The Rolling Stones",
16 |             "title": "Wild Horses"
17 |         },
18 |         {
19 |             "id": 4,
20 |             "artist": "Led Zeppelin",
21 |             "title": "Ten Years Gone"
22 |         },
23 |         {
24 |             "id": 5,
25 |             "artist": "Triumph",
26 |             "title": "Magic Power"
27 |         }
28 |     ]
29 | }


--------------------------------------------------------------------------------
/db/data.json:
--------------------------------------------------------------------------------
 1 | {
 2 |     "data": [
 3 |         {
 4 |             "id": 1,
 5 |             "artist": "The Beatles",
 6 |             "title": "Hey Jude",
 7 |             "sequence": 1
 8 |         },
 9 |         {
10 |             "id": 2,
11 |             "artist": "Neil Young",
12 |             "title": "My My, Hey Hey",
13 |             "sequence": 2
14 |         },
15 |         {
16 |             "id": 3,
17 |             "artist": "The Rolling Stones",
18 |             "title": "Wild Horses",
19 |             "sequence": 3
20 |         },
21 |         {
22 |             "id": 4,
23 |             "artist": "Led Zeppelin",
24 |             "title": "Ten Years Gone",
25 |             "sequence": 4
26 |         },
27 |         {
28 |             "id": 5,
29 |             "artist": "Triumph",
30 |             "title": "Magic Power",
31 |             "sequence": 5
32 |         }
33 |     ]
34 | }


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "dnd-kit-tutorial",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "scripts": {
 6 |     "dev": "next dev",
 7 |     "build": "next build",
 8 |     "start": "next start",
 9 |     "lint": "next lint"
10 |   },
11 |   "dependencies": {
12 |     "@dnd-kit/core": "^6.1.0",
13 |     "@dnd-kit/sortable": "^8.0.0",
14 |     "@dnd-kit/utilities": "^3.2.2",
15 |     "@radix-ui/react-slot": "^1.1.0",
16 |     "class-variance-authority": "^0.7.0",
17 |     "clsx": "^2.1.1",
18 |     "lucide-react": "^0.424.0",
19 |     "next": "14.2.5",
20 |     "react": "^18",
21 |     "react-dom": "^18",
22 |     "tailwind-merge": "^2.4.0",
23 |     "tailwindcss-animate": "^1.0.7"
24 |   },
25 |   "devDependencies": {
26 |     "@types/node": "^20",
27 |     "@types/react": "^18",
28 |     "@types/react-dom": "^18",
29 |     "eslint": "^8",
30 |     "eslint-config-next": "14.2.5",
31 |     "postcss": "^8",
32 |     "tailwindcss": "^3.4.1",
33 |     "typescript": "^5"
34 |   }
35 | }
36 | 


--------------------------------------------------------------------------------
/public/next.svg:
--------------------------------------------------------------------------------
1 | <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 394 80"><path fill="#000" d="M262 0h68.5v12.7h-27.2v66.6h-13.6V12.7H262V0ZM149 0v12.7H94v20.4h44.3v12.6H94v21h55v12.6H80.5V0h68.7zm34.3 0h-17.8l63.8 79.4h17.9l-32-39.7 32-39.6h-17.9l-23 28.6-23-28.6zm18.3 56.7-9-11-27.1 33.7h17.8l18.3-22.7z"/><path fill="#000" d="M81 79.3 17 0H0v79.3h13.6V17l50.2 62.3H81Zm252.6-.4c-1 0-1.8-.4-2.5-1s-1.1-1.6-1.1-2.6.3-1.8 1-2.5 1.6-1 2.6-1 1.8.3 2.5 1a3.4 3.4 0 0 1 .6 4.3 3.7 3.7 0 0 1-3 1.8zm23.2-33.5h6v23.3c0 2.1-.4 4-1.3 5.5a9.1 9.1 0 0 1-3.8 3.5c-1.6.8-3.5 1.3-5.7 1.3-2 0-3.7-.4-5.3-1s-2.8-1.8-3.7-3.2c-.9-1.3-1.4-3-1.4-5h6c.1.8.3 1.6.7 2.2s1 1.2 1.6 1.5c.7.4 1.5.5 2.4.5 1 0 1.8-.2 2.4-.6a4 4 0 0 0 1.6-1.8c.3-.8.5-1.8.5-3V45.5zm30.9 9.1a4.4 4.4 0 0 0-2-3.3 7.5 7.5 0 0 0-4.3-1.1c-1.3 0-2.4.2-3.3.5-.9.4-1.6 1-2 1.6a3.5 3.5 0 0 0-.3 4c.3.5.7.9 1.3 1.2l1.8 1 2 .5 3.2.8c1.3.3 2.5.7 3.7 1.2a13 13 0 0 1 3.2 1.8 8.1 8.1 0 0 1 3 6.5c0 2-.5 3.7-1.5 5.1a10 10 0 0 1-4.4 3.5c-1.8.8-4.1 1.2-6.8 1.2-2.6 0-4.9-.4-6.8-1.2-2-.8-3.4-2-4.5-3.5a10 10 0 0 1-1.7-5.6h6a5 5 0 0 0 3.5 4.6c1 .4 2.2.6 3.4.6 1.3 0 2.5-.2 3.5-.6 1-.4 1.8-1 2.4-1.7a4 4 0 0 0 .8-2.4c0-.9-.2-1.6-.7-2.2a11 11 0 0 0-2.1-1.4l-3.2-1-3.8-1c-2.8-.7-5-1.7-6.6-3.2a7.2 7.2 0 0 1-2.4-5.7 8 8 0 0 1 1.7-5 10 10 0 0 1 4.3-3.5c2-.8 4-1.2 6.4-1.2 2.3 0 4.4.4 6.2 1.2 1.8.8 3.2 2 4.3 3.4 1 1.4 1.5 3 1.5 5h-5.8z"/></svg>


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # React Drag and Drop:
 2 | ## the missing example 
 3 | ---
 4 | ### Author Links
 5 | 
 6 | 👋 Hello, I'm Dave Gray.
 7 | 
 8 | 📚 [My Courses](https://courses.davegray.codes/)
 9 | 
10 | ✅ [Check out my YouTube Channel with hundreds of tutorials](https://www.youtube.com/DaveGrayTeachesCode).
11 | 
12 | 🚩 [Subscribe to my channel](https://bit.ly/3nGHmNn)
13 | 
14 | 💖 [Support My Content](https://patreon.com/davegray)
15 | 
16 | 🚀 Follow Me:
17 | 
18 | - [Twitter](https://twitter.com/yesdavidgray)
19 | - [LinkedIn](https://www.linkedin.com/in/davidagray/)
20 | - [Blog](https://davegray.codes)
21 | 
22 | ---
23 | 
24 | ### Description
25 | 
26 | 📺 [YouTube Video](https://youtu.be/a6lYZWN4lVA) for this repository.
27 | 
28 | 📖 [Blog Article](https://www.davegray.codes/posts/missing-example-for-react-drag-n-drop) on this topic.
29 | 
30 | ---
31 | 
32 | ### ⚙ Usage
33 | 
34 | - `npm install`
35 | - `npm run dev`
36 | - Then run the development server in a separate terminal window:
37 | ```bash
38 | npx json-server db/data.json -w -p 3500
39 | ```
40 | ---
41 | 
42 | ### 🎓 Academic Honesty
43 | 
44 | **DO NOT COPY FOR AN ASSIGNMENT** - Avoid plagiarism and adhere to the spirit of this [Academic Honesty Policy](https://www.freecodecamp.org/news/academic-honesty-policy/).
45 | 
46 | ---
47 | 
48 | ### 📚 Tutorial References
49 | 
50 | - 🔗 [dndkit](https://docs.dndkit.com/)
51 | 


--------------------------------------------------------------------------------
/src/app/globals.css:
--------------------------------------------------------------------------------
 1 | @tailwind base;
 2 | @tailwind components;
 3 | @tailwind utilities;
 4 | 
 5 | @layer base {
 6 |   :root {
 7 |     --background: 0 0% 100%;
 8 |     --foreground: 20 14.3% 4.1%;
 9 |     --card: 0 0% 100%;
10 |     --card-foreground: 20 14.3% 4.1%;
11 |     --popover: 0 0% 100%;
12 |     --popover-foreground: 20 14.3% 4.1%;
13 |     --primary: 24 9.8% 10%;
14 |     --primary-foreground: 60 9.1% 97.8%;
15 |     --secondary: 60 4.8% 95.9%;
16 |     --secondary-foreground: 24 9.8% 10%;
17 |     --muted: 60 4.8% 95.9%;
18 |     --muted-foreground: 25 5.3% 44.7%;
19 |     --accent: 60 4.8% 95.9%;
20 |     --accent-foreground: 24 9.8% 10%;
21 |     --destructive: 0 84.2% 60.2%;
22 |     --destructive-foreground: 60 9.1% 97.8%;
23 |     --border: 20 5.9% 90%;
24 |     --input: 20 5.9% 90%;
25 |     --ring: 20 14.3% 4.1%;
26 |     --radius: 0.5rem;
27 |     --chart-1: 12 76% 61%;
28 |     --chart-2: 173 58% 39%;
29 |     --chart-3: 197 37% 24%;
30 |     --chart-4: 43 74% 66%;
31 |     --chart-5: 27 87% 67%;
32 |   }
33 | 
34 |   :root {
35 |     --background: 20 14.3% 4.1%;
36 |     --foreground: 60 9.1% 97.8%;
37 |     --card: 20 14.3% 4.1%;
38 |     --card-foreground: 60 9.1% 97.8%;
39 |     --popover: 20 14.3% 4.1%;
40 |     --popover-foreground: 60 9.1% 97.8%;
41 |     --primary: 60 9.1% 97.8%;
42 |     --primary-foreground: 24 9.8% 10%;
43 |     --secondary: 12 6.5% 15.1%;
44 |     --secondary-foreground: 60 9.1% 97.8%;
45 |     --muted: 12 6.5% 15.1%;
46 |     --muted-foreground: 24 5.4% 63.9%;
47 |     --accent: 12 6.5% 15.1%;
48 |     --accent-foreground: 60 9.1% 97.8%;
49 |     --destructive: 0 62.8% 30.6%;
50 |     --destructive-foreground: 60 9.1% 97.8%;
51 |     --border: 12 6.5% 15.1%;
52 |     --input: 12 6.5% 15.1%;
53 |     --ring: 24 5.7% 82.9%;
54 |     --chart-1: 220 70% 50%;
55 |     --chart-2: 160 60% 45%;
56 |     --chart-3: 30 80% 55%;
57 |     --chart-4: 280 65% 60%;
58 |     --chart-5: 340 75% 55%;
59 |   }
60 | }
61 | 
62 | @layer base {
63 |   * {
64 |     @apply border-border;
65 |   }
66 | 
67 |   body {
68 |     @apply bg-background text-foreground;
69 |   }
70 | }


--------------------------------------------------------------------------------
/src/components/ui/button.tsx:
--------------------------------------------------------------------------------
 1 | import * as React from "react"
 2 | import { Slot } from "@radix-ui/react-slot"
 3 | import { cva, type VariantProps } from "class-variance-authority"
 4 | 
 5 | import { cn } from "@/lib/utils"
 6 | 
 7 | const buttonVariants = cva(
 8 |   "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
 9 |   {
10 |     variants: {
11 |       variant: {
12 |         default: "bg-primary text-primary-foreground hover:bg-primary/90",
13 |         destructive:
14 |           "bg-destructive text-destructive-foreground hover:bg-destructive/90",
15 |         outline:
16 |           "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
17 |         secondary:
18 |           "bg-secondary text-secondary-foreground hover:bg-secondary/80",
19 |         ghost: "hover:bg-accent hover:text-accent-foreground",
20 |         link: "text-primary underline-offset-4 hover:underline",
21 |       },
22 |       size: {
23 |         default: "h-10 px-4 py-2",
24 |         sm: "h-9 rounded-md px-3",
25 |         lg: "h-11 rounded-md px-8",
26 |         icon: "h-10 w-10",
27 |       },
28 |     },
29 |     defaultVariants: {
30 |       variant: "default",
31 |       size: "default",
32 |     },
33 |   }
34 | )
35 | 
36 | export interface ButtonProps
37 |   extends React.ButtonHTMLAttributes<HTMLButtonElement>,
38 |     VariantProps<typeof buttonVariants> {
39 |   asChild?: boolean
40 | }
41 | 
42 | const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
43 |   ({ className, variant, size, asChild = false, ...props }, ref) => {
44 |     const Comp = asChild ? Slot : "button"
45 |     return (
46 |       <Comp
47 |         className={cn(buttonVariants({ variant, size, className }))}
48 |         ref={ref}
49 |         {...props}
50 |       />
51 |     )
52 |   }
53 | )
54 | Button.displayName = "Button"
55 | 
56 | export { Button, buttonVariants }
57 | 


--------------------------------------------------------------------------------
/tailwind.config.ts:
--------------------------------------------------------------------------------
 1 | import type { Config } from "tailwindcss"
 2 | 
 3 | const config = {
 4 |   darkMode: ["class"],
 5 |   content: [
 6 |     './pages/**/*.{ts,tsx}',
 7 |     './components/**/*.{ts,tsx}',
 8 |     './app/**/*.{ts,tsx}',
 9 |     './src/**/*.{ts,tsx}',
10 | 	],
11 |   prefix: "",
12 |   theme: {
13 |     container: {
14 |       center: true,
15 |       padding: "2rem",
16 |       screens: {
17 |         "2xl": "1400px",
18 |       },
19 |     },
20 |     extend: {
21 |       colors: {
22 |         border: "hsl(var(--border))",
23 |         input: "hsl(var(--input))",
24 |         ring: "hsl(var(--ring))",
25 |         background: "hsl(var(--background))",
26 |         foreground: "hsl(var(--foreground))",
27 |         primary: {
28 |           DEFAULT: "hsl(var(--primary))",
29 |           foreground: "hsl(var(--primary-foreground))",
30 |         },
31 |         secondary: {
32 |           DEFAULT: "hsl(var(--secondary))",
33 |           foreground: "hsl(var(--secondary-foreground))",
34 |         },
35 |         destructive: {
36 |           DEFAULT: "hsl(var(--destructive))",
37 |           foreground: "hsl(var(--destructive-foreground))",
38 |         },
39 |         muted: {
40 |           DEFAULT: "hsl(var(--muted))",
41 |           foreground: "hsl(var(--muted-foreground))",
42 |         },
43 |         accent: {
44 |           DEFAULT: "hsl(var(--accent))",
45 |           foreground: "hsl(var(--accent-foreground))",
46 |         },
47 |         popover: {
48 |           DEFAULT: "hsl(var(--popover))",
49 |           foreground: "hsl(var(--popover-foreground))",
50 |         },
51 |         card: {
52 |           DEFAULT: "hsl(var(--card))",
53 |           foreground: "hsl(var(--card-foreground))",
54 |         },
55 |       },
56 |       borderRadius: {
57 |         lg: "var(--radius)",
58 |         md: "calc(var(--radius) - 2px)",
59 |         sm: "calc(var(--radius) - 4px)",
60 |       },
61 |       keyframes: {
62 |         "accordion-down": {
63 |           from: { height: "0" },
64 |           to: { height: "var(--radix-accordion-content-height)" },
65 |         },
66 |         "accordion-up": {
67 |           from: { height: "var(--radix-accordion-content-height)" },
68 |           to: { height: "0" },
69 |         },
70 |       },
71 |       animation: {
72 |         "accordion-down": "accordion-down 0.2s ease-out",
73 |         "accordion-up": "accordion-up 0.2s ease-out",
74 |       },
75 |     },
76 |   },
77 |   plugins: [require("tailwindcss-animate")],
78 | } satisfies Config
79 | 
80 | export default config


--------------------------------------------------------------------------------
/src/components/SortableRow.tsx:
--------------------------------------------------------------------------------
 1 | import { XIcon } from 'lucide-react'
 2 | 
 3 | import { useSortable } from '@dnd-kit/sortable'
 4 | import { CSS } from '@dnd-kit/utilities'
 5 | 
 6 | import { Button } from './ui/button'
 7 | 
 8 | import type { Item } from "./List"
 9 | 
10 | type Props = {
11 |     item: Item,
12 |     removeItem: (id: number) => void,
13 |     forceDragging?: boolean,
14 | }
15 | 
16 | export function SortableRow({ item, removeItem, forceDragging = false }: Props) {
17 | 
18 |     const {
19 |         attributes,
20 |         isDragging,
21 |         listeners,
22 |         setNodeRef,
23 |         setActivatorNodeRef,
24 |         transform,
25 |         transition
26 |     } = useSortable({
27 |         id: item.sequence,
28 |     })
29 | 
30 |     const parentStyles = {
31 |         transform: CSS.Transform.toString(transform),
32 |         transition: transition || undefined,
33 |         opacity: isDragging ? "0.4" : "1",
34 |         lineHeight: "4",
35 |     }
36 | 
37 |     const draggableStyles = {
38 |         cursor: isDragging || forceDragging ? "grabbing" : "grab",
39 |     }
40 | 
41 |     return (
42 |         <article
43 |             className="flex flex-col w-full gap-2 [&:not(:first-child)]:pt-2" ref={setNodeRef}
44 |             style={parentStyles}
45 |         >
46 |             <div className="bg-secondary w-full rounded-md flex items-center gap-2 overflow-hidden">
47 | 
48 |                 <div className="bg-ring w-12 h-full flex items-center">
49 |                     <p className="w-full text-center text-secondary">{item.sequence}</p>
50 |                 </div>
51 | 
52 |                 <div
53 |                     ref={setActivatorNodeRef}
54 |                     className="flex-grow p-2"
55 |                     style={draggableStyles}
56 |                     {...attributes} {...listeners}
57 |                 >
58 |                     <h2 className="text-lg">
59 |                         {item.title}
60 |                     </h2>
61 |                     <p className="text-sm">{item.artist}</p>
62 |                 </div>
63 | 
64 |                 <div className="w-12 h-full flex items-center">
65 |                     <Button
66 |                         type="button"
67 |                         size="icon"
68 |                         variant="outline"
69 |                         onClick={() => removeItem(item.id)}
70 |                     >
71 |                         <XIcon className="text-red-500" />
72 |                     </Button>
73 |                 </div>
74 | 
75 |             </div>
76 | 
77 |         </article>
78 |     )
79 | }


--------------------------------------------------------------------------------
/src/components/List.tsx:
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  1 | "use client"
  2 | 
  3 | import dynamic from 'next/dynamic'
  4 | import { useState } from 'react'
  5 | 
  6 | import {
  7 |     closestCenter, DragEndEvent, DragOverlay, DragStartEvent, PointerSensor, TouchSensor, useSensor,
  8 |     useSensors
  9 | } from '@dnd-kit/core'
 10 | import { arrayMove, SortableContext, verticalListSortingStrategy } from '@dnd-kit/sortable'
 11 | 
 12 | import { SortableRow } from './SortableRow'
 13 | 
 14 | const DndContextWithNoSSR = dynamic(
 15 |     () => import('@dnd-kit/core').then((mod) => mod.DndContext),
 16 |     { ssr: false }
 17 | )
 18 | 
 19 | export type Item = {
 20 |     id: number,
 21 |     artist: string,
 22 |     title: string,
 23 |     sequence: number
 24 | }
 25 | 
 26 | type Props = {
 27 |     data: Item[]
 28 | }
 29 | 
 30 | export function List({ data }: Props) {
 31 |     const [items, setItems] = useState(data)
 32 |     const [activeItem, setActiveItem] = useState<Item | undefined>(undefined)
 33 | 
 34 |     // for input methods detection
 35 |     const sensors = useSensors(useSensor(PointerSensor), useSensor(TouchSensor))
 36 | 
 37 |     const removeItem = (id: number) => {
 38 |         const updated = items.filter(item => item.id !== id).map((item, i) => ({ ...item, sequence: i + 1 }))
 39 | 
 40 |         setItems(updated)
 41 |     }
 42 | 
 43 |     // triggered when dragging starts
 44 |     const handleDragStart = (event: DragStartEvent) => {
 45 |         const { active } = event
 46 |         setActiveItem(items?.find(item => item.sequence === active.id))
 47 |     }
 48 | 
 49 |     const handleDragEnd = (event: DragEndEvent) => {
 50 |         const { active, over } = event
 51 | 
 52 |         if (!over) return
 53 | 
 54 |         const activeItem = items.find(ex => ex.sequence === active.id)
 55 |         const overItem = items.find(ex => ex.sequence === over.id)
 56 | 
 57 |         if (!activeItem || !overItem) {
 58 |             return
 59 |         }
 60 | 
 61 |         const activeIndex = items.findIndex(ex => ex.sequence === active.id)
 62 |         const overIndex = items.findIndex(ex => ex.sequence === over.id)
 63 | 
 64 |         if (activeIndex !== overIndex) {
 65 |             setItems(prev => {
 66 |                 const updated = arrayMove(prev, activeIndex, overIndex).map((ex, i) => ({ ...ex, sequence: i + 1 }))
 67 | 
 68 |                 return updated
 69 |             })
 70 |         }
 71 |         setActiveItem(undefined)
 72 |     }
 73 | 
 74 |     const handleDragCancel = () => {
 75 |         setActiveItem(undefined)
 76 |     }
 77 | 
 78 |     return (
 79 |         <div className="flex flex-col gap-2 w-1/2 mx-auto">
 80 |             {items?.length ? (
 81 |                 <DndContextWithNoSSR
 82 |                     sensors={sensors}
 83 |                     collisionDetection={closestCenter}
 84 |                     onDragStart={handleDragStart}
 85 |                     onDragEnd={handleDragEnd}
 86 |                     onDragCancel={handleDragCancel}
 87 |                 >
 88 |                     <SortableContext
 89 |                         items={items.map(item => item.sequence)}
 90 |                         strategy={verticalListSortingStrategy}
 91 |                     >
 92 |                         {items.map(item => (
 93 |                             <SortableRow
 94 |                                 key={item.id}
 95 |                                 item={item}
 96 |                                 removeItem={removeItem}
 97 |                             />
 98 |                         ))}
 99 |                     </SortableContext>
100 | 
101 |                     <DragOverlay adjustScale style={{ transformOrigin: "0 0 " }}>
102 |                         {activeItem ? (
103 |                             <SortableRow
104 |                                 item={activeItem}
105 |                                 removeItem={removeItem}
106 |                                 forceDragging={true}
107 |                             />
108 |                         ) : null}
109 |                     </DragOverlay>
110 |                 </DndContextWithNoSSR>
111 |             ) : null}
112 |         </div>
113 |     )
114 | }


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