Compare commits
6 Commits
b70759fa4b
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a9f9678133
Author | SHA1 | Date | |
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a9f9678133 | |||
9b566d7cb3 | |||
b996d3c3f4 | |||
e3635677d5 | |||
648f9464cb | |||
1d0f0275b6 |
3
.gitignore
vendored
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3
.gitignore
vendored
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@ -0,0 +1,3 @@
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|||||||
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node_modules
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public/scripts
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dist
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1
.tool-versions
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1
.tool-versions
Normal file
@ -0,0 +1 @@
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|||||||
|
nodejs 22.5.1
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133
AnimatedListDemo.tsx
Normal file
133
AnimatedListDemo.tsx
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@ -0,0 +1,133 @@
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import React, { useReducer } from 'react';
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import { useAnimatedListItems } from './useAnimatedListItems';
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type Mutation = 'reverse' | 'randomize' | 'insert' | 'remove';
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/**
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* Randomizer function shamelessly copied unmodified from https://stackoverflow.com/a/12646864
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*
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* License: https://creativecommons.org/licenses/by-sa/4.0/
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*
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* Author(s):
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* - https://stackoverflow.com/users/310500/laurens-holst
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* - https://stackoverflow.com/users/8112776/ashleedawg
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*/
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function shuffleArray(array) {
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for (let i = array.length - 1; i > 0; i--) {
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const j = Math.floor(Math.random() * (i + 1));
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[array[i], array[j]] = [array[j], array[i]];
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}
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}
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function insertRandomlyIntoArray(array: string[]): string[] {
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const insertBefore = Math.floor(Math.random() * (array.length + 1));
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const newItem = `Serial Number ${crypto.randomUUID()}`;
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if (insertBefore === 0) {
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return [newItem, ...array];
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}
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return [
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...array.slice(0, insertBefore),
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newItem,
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...array.slice(insertBefore),
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];
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}
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function removeRandomlyFromArray(array: string[]): string[] {
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const removeIndex = Math.floor(Math.random() * array.length);
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if (removeIndex === 0) {
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return [...array.slice(1)];
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}
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if (removeIndex === array.length) {
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return [...array.slice(0, -1)];
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}
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return [...array.slice(0, removeIndex), ...array.slice(removeIndex + 1)];
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}
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export const AnimatedListDemo = () => {
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const [items, mutateItems] = useReducer(
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(prevState: string[], mutation: Mutation) => {
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let newState: string[] = [...prevState];
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switch (mutation) {
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case 'reverse':
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newState.reverse();
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break;
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case 'randomize':
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shuffleArray(newState);
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break;
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case 'insert':
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newState = insertRandomlyIntoArray(newState);
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break;
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case 'remove':
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newState = removeRandomlyFromArray(newState);
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break;
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default:
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return prevState;
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}
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return newState;
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},
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[
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`Serial Number ${crypto.randomUUID()}`,
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`Serial Number ${crypto.randomUUID()}`,
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`Serial Number ${crypto.randomUUID()}`,
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`Serial Number ${crypto.randomUUID()}`,
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],
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|
);
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|
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const { updateItemRef, updateItemPositions, itemStyles } =
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useAnimatedListItems({ keys: items });
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return (
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<main>
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<button
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type="button"
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onClick={() => {
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updateItemPositions();
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mutateItems('reverse');
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}}
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>
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Reverse
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</button>
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<button
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type="button"
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|
onClick={() => {
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updateItemPositions();
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mutateItems('randomize');
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|
}}
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>
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Randomize
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</button>
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<button
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type="button"
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onClick={() => {
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updateItemPositions();
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mutateItems('insert');
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|
}}
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>
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|
Insert
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|
</button>
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<button
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type="button"
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|
onClick={() => {
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updateItemPositions();
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|
mutateItems('remove');
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|
}}
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|
>
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|
Remove
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|
</button>
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|
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|
<ol>
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|
{items.map((item) => {
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|
return (
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|
<li
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|
key={item}
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|
ref={(li) => updateItemRef(item, li)}
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|
style={itemStyles[item]}
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|
>
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|
{item}
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|
</li>
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|
);
|
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|
})}
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|
</ol>
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|
</main>
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|
);
|
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|
};
|
20
index.tsx
Normal file
20
index.tsx
Normal file
@ -0,0 +1,20 @@
|
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|
import React from 'react';
|
||||||
|
import { Root, createRoot } from 'react-dom/client';
|
||||||
|
import { AnimatedListDemo } from './AnimatedListDemo';
|
||||||
|
|
||||||
|
class AnimatedListComponent extends HTMLElement {
|
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|
root: Root;
|
||||||
|
|
||||||
|
constructor() {
|
||||||
|
super();
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||||||
|
}
|
||||||
|
|
||||||
|
connectedCallback() {
|
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|
const rootNode = document.createElement('main');
|
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|
this.appendChild(rootNode);
|
||||||
|
this.root = createRoot(rootNode);
|
||||||
|
this.root.render(<AnimatedListDemo />);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
customElements.define('react-animated-list-demo', AnimatedListComponent);
|
557
package-lock.json
generated
Normal file
557
package-lock.json
generated
Normal file
@ -0,0 +1,557 @@
|
|||||||
|
{
|
||||||
|
"name": "demo-react-animated-list",
|
||||||
|
"version": "1.0.0",
|
||||||
|
"lockfileVersion": 3,
|
||||||
|
"requires": true,
|
||||||
|
"packages": {
|
||||||
|
"": {
|
||||||
|
"name": "demo-react-animated-list",
|
||||||
|
"version": "1.0.0",
|
||||||
|
"license": "MIT",
|
||||||
|
"dependencies": {
|
||||||
|
"react": "18.3.1",
|
||||||
|
"react-dom": "18.3.1"
|
||||||
|
},
|
||||||
|
"devDependencies": {
|
||||||
|
"@types/react": "18.3.3",
|
||||||
|
"@types/react-dom": "18.3.0",
|
||||||
|
"esbuild": "0.23.0"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/aix-ppc64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-3sG8Zwa5fMcA9bgqB8AfWPQ+HFke6uD3h1s3RIwUNK8EG7a4buxvuFTs3j1IMs2NXAk9F30C/FF4vxRgQCcmoQ==",
|
||||||
|
"cpu": [
|
||||||
|
"ppc64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"aix"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/android-arm": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-+KuOHTKKyIKgEEqKbGTK8W7mPp+hKinbMBeEnNzjJGyFcWsfrXjSTNluJHCY1RqhxFurdD8uNXQDei7qDlR6+g==",
|
||||||
|
"cpu": [
|
||||||
|
"arm"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"android"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/android-arm64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-EuHFUYkAVfU4qBdyivULuu03FhJO4IJN9PGuABGrFy4vUuzk91P2d+npxHcFdpUnfYKy0PuV+n6bKIpHOB3prQ==",
|
||||||
|
"cpu": [
|
||||||
|
"arm64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"android"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/android-x64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-WRrmKidLoKDl56LsbBMhzTTBxrsVwTKdNbKDalbEZr0tcsBgCLbEtoNthOW6PX942YiYq8HzEnb4yWQMLQuipQ==",
|
||||||
|
"cpu": [
|
||||||
|
"x64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"android"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/darwin-arm64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-YLntie/IdS31H54Ogdn+v50NuoWF5BDkEUFpiOChVa9UnKpftgwzZRrI4J132ETIi+D8n6xh9IviFV3eXdxfow==",
|
||||||
|
"cpu": [
|
||||||
|
"arm64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"darwin"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/darwin-x64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-IMQ6eme4AfznElesHUPDZ+teuGwoRmVuuixu7sv92ZkdQcPbsNHzutd+rAfaBKo8YK3IrBEi9SLLKWJdEvJniQ==",
|
||||||
|
"cpu": [
|
||||||
|
"x64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"darwin"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/freebsd-arm64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-0muYWCng5vqaxobq6LB3YNtevDFSAZGlgtLoAc81PjUfiFz36n4KMpwhtAd4he8ToSI3TGyuhyx5xmiWNYZFyw==",
|
||||||
|
"cpu": [
|
||||||
|
"arm64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"freebsd"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/freebsd-x64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-XKDVu8IsD0/q3foBzsXGt/KjD/yTKBCIwOHE1XwiXmrRwrX6Hbnd5Eqn/WvDekddK21tfszBSrE/WMaZh+1buQ==",
|
||||||
|
"cpu": [
|
||||||
|
"x64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"freebsd"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/linux-arm": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-SEELSTEtOFu5LPykzA395Mc+54RMg1EUgXP+iw2SJ72+ooMwVsgfuwXo5Fn0wXNgWZsTVHwY2cg4Vi/bOD88qw==",
|
||||||
|
"cpu": [
|
||||||
|
"arm"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"linux"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/linux-arm64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-j1t5iG8jE7BhonbsEg5d9qOYcVZv/Rv6tghaXM/Ug9xahM0nX/H2gfu6X6z11QRTMT6+aywOMA8TDkhPo8aCGw==",
|
||||||
|
"cpu": [
|
||||||
|
"arm64"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"linux"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/linux-ia32": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.23.0.tgz",
|
||||||
|
"integrity": "sha512-P7O5Tkh2NbgIm2R6x1zGJJsnacDzTFcRWZyTTMgFdVit6E98LTxO+v8LCCLWRvPrjdzXHx9FEOA8oAZPyApWUA==",
|
||||||
|
"cpu": [
|
||||||
|
"ia32"
|
||||||
|
],
|
||||||
|
"dev": true,
|
||||||
|
"license": "MIT",
|
||||||
|
"optional": true,
|
||||||
|
"os": [
|
||||||
|
"linux"
|
||||||
|
],
|
||||||
|
"engines": {
|
||||||
|
"node": ">=18"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/@esbuild/linux-loong64": {
|
||||||
|
"version": "0.23.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.23.0.tgz",
|
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|
||||||
|
"version": "18.3.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.3.1.tgz",
|
||||||
|
"integrity": "sha512-5m4nQKp+rZRb09LNH59GM4BxTh9251/ylbKIbpe7TpGxfJ+9kv6BLkLBXIjjspbgbnIBNqlI23tRnTWT0snUIw==",
|
||||||
|
"license": "MIT",
|
||||||
|
"dependencies": {
|
||||||
|
"loose-envify": "^1.1.0",
|
||||||
|
"scheduler": "^0.23.2"
|
||||||
|
},
|
||||||
|
"peerDependencies": {
|
||||||
|
"react": "^18.3.1"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"node_modules/scheduler": {
|
||||||
|
"version": "0.23.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.2.tgz",
|
||||||
|
"integrity": "sha512-UOShsPwz7NrMUqhR6t0hWjFduvOzbtv7toDH1/hIrfRNIDBnnBWd0CwJTGvTpngVlmwGCdP9/Zl/tVrDqcuYzQ==",
|
||||||
|
"license": "MIT",
|
||||||
|
"dependencies": {
|
||||||
|
"loose-envify": "^1.1.0"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
26
package.json
Normal file
26
package.json
Normal file
@ -0,0 +1,26 @@
|
|||||||
|
{
|
||||||
|
"name": "demo-react-animated-list",
|
||||||
|
"version": "1.0.0",
|
||||||
|
"description": "A demo of an implementation of an animated list in React Typescript.",
|
||||||
|
"main": "index.tsx",
|
||||||
|
"scripts": {
|
||||||
|
"build": "esbuild index.tsx --bundle --sourcemap --outfile=./dist/demo-react-animated-list.js",
|
||||||
|
"dev": "esbuild index.tsx --bundle --watch --serve --outdir=./public/scripts --servedir=./public",
|
||||||
|
"test": "echo \"Error: no test specified\" && exit 1"
|
||||||
|
},
|
||||||
|
"repository": {
|
||||||
|
"type": "git",
|
||||||
|
"url": "https://scm.matthewcardarelli.com/mcsolutions/demo-react-animated-list.git"
|
||||||
|
},
|
||||||
|
"author": "Matthew Cardarelli",
|
||||||
|
"license": "MIT",
|
||||||
|
"devDependencies": {
|
||||||
|
"@types/react": "18.3.3",
|
||||||
|
"@types/react-dom": "18.3.0",
|
||||||
|
"esbuild": "0.23.0"
|
||||||
|
},
|
||||||
|
"dependencies": {
|
||||||
|
"react": "18.3.1",
|
||||||
|
"react-dom": "18.3.1"
|
||||||
|
}
|
||||||
|
}
|
11
public/index.html
Normal file
11
public/index.html
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
<!DOCTYPE html>
|
||||||
|
<html>
|
||||||
|
<head>
|
||||||
|
<meta charset="utf-8" />
|
||||||
|
<title>React animated list demo</title>
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<script src="./scripts/index.js"></script>
|
||||||
|
<react-animated-list-demo />
|
||||||
|
</body>
|
||||||
|
</html>
|
12
tsconfig.json
Normal file
12
tsconfig.json
Normal file
@ -0,0 +1,12 @@
|
|||||||
|
{
|
||||||
|
"compilerOptions": {
|
||||||
|
"jsx": "preserve",
|
||||||
|
"target": "ESNext",
|
||||||
|
"module": "ESNext",
|
||||||
|
"moduleResolution": "Bundler",
|
||||||
|
"lib": ["DOM", "ESNext"],
|
||||||
|
"noEmit": true,
|
||||||
|
"alwaysStrict": true
|
||||||
|
},
|
||||||
|
"include": ["*.ts", "*.tsx"]
|
||||||
|
}
|
112
useAnimatedListItems.ts
Normal file
112
useAnimatedListItems.ts
Normal file
@ -0,0 +1,112 @@
|
|||||||
|
import { useLayoutEffect, useRef, useState } from 'react';
|
||||||
|
|
||||||
|
interface ItemTops {
|
||||||
|
[id: string]: number | undefined;
|
||||||
|
}
|
||||||
|
|
||||||
|
interface ListItemRefsById {
|
||||||
|
[id: string]: HTMLLIElement | undefined;
|
||||||
|
}
|
||||||
|
|
||||||
|
interface ItemOffsets {
|
||||||
|
[id: string]: number | undefined;
|
||||||
|
}
|
||||||
|
|
||||||
|
interface ItemStyles {
|
||||||
|
position: 'relative';
|
||||||
|
top: number;
|
||||||
|
transition: string;
|
||||||
|
}
|
||||||
|
|
||||||
|
interface UseAnimatedListItemArgs {
|
||||||
|
/**
|
||||||
|
* **IMPORTANT - This list must be memoized. The array reference should only change when the
|
||||||
|
* list of items changes.**
|
||||||
|
*
|
||||||
|
* The list of item keys. Each key should uniquely identify a `<ListItem>` component, and
|
||||||
|
* should be the same value passed to the `ListItem`'s `key` prop.
|
||||||
|
*/
|
||||||
|
keys: string[] | undefined;
|
||||||
|
}
|
||||||
|
|
||||||
|
interface UseAnimatedListItemReturns {
|
||||||
|
/**
|
||||||
|
* Item styles that should be passed to the `sx` prop of each `ListItem`. The styles are
|
||||||
|
* mapped per item key.
|
||||||
|
*/
|
||||||
|
itemStyles: { [key: string]: ItemStyles | undefined };
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Function that must be called within the `ref` callback prop of each `ListItem`.
|
||||||
|
*
|
||||||
|
* @param {string} key - the `ListItem`'s unique key.
|
||||||
|
* @param {HTMLLIElement} li - the list item element reference.
|
||||||
|
* @returns {void}
|
||||||
|
*/
|
||||||
|
updateItemRef: (key: string, li: HTMLLIElement | null) => void;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Function that must be called within each and every callback that causes the list of items
|
||||||
|
* to refresh or update. This is used to take a "snapshot" of the items current positions prior
|
||||||
|
* to any change.
|
||||||
|
*
|
||||||
|
* @returns {void}
|
||||||
|
*/
|
||||||
|
updateItemPositions: () => void;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This hook can be plugged into a MUI <List> to animate the <ListItem> components whenever
|
||||||
|
* change their order.
|
||||||
|
*/
|
||||||
|
export const useAnimatedListItems = ({
|
||||||
|
keys,
|
||||||
|
}: UseAnimatedListItemArgs): UseAnimatedListItemReturns => {
|
||||||
|
const itemRefs = useRef<ListItemRefsById>({});
|
||||||
|
const itemTops = useRef<ItemTops>({});
|
||||||
|
const [itemOffsets, setItemOffsets] = useState<ItemOffsets>({});
|
||||||
|
|
||||||
|
useLayoutEffect(() => {
|
||||||
|
if (!keys) return;
|
||||||
|
const newItemOffsets: ItemOffsets = {};
|
||||||
|
keys.forEach((key) => {
|
||||||
|
const itemRef = itemRefs.current[key];
|
||||||
|
if (itemRef) {
|
||||||
|
const currentTop = itemRef.getBoundingClientRect().top;
|
||||||
|
const prevTop = itemTops.current[key] || 0;
|
||||||
|
const offset = -(currentTop - prevTop);
|
||||||
|
newItemOffsets[key] = offset;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
setItemOffsets(newItemOffsets);
|
||||||
|
|
||||||
|
requestAnimationFrame(() => {
|
||||||
|
setItemOffsets({});
|
||||||
|
});
|
||||||
|
}, [keys]);
|
||||||
|
|
||||||
|
let itemStyles: UseAnimatedListItemReturns['itemStyles'] = {};
|
||||||
|
keys?.forEach((key) => {
|
||||||
|
itemStyles[key] = {
|
||||||
|
position: 'relative',
|
||||||
|
top: itemOffsets[key] || 0,
|
||||||
|
transition:
|
||||||
|
!itemTops.current[key] || itemOffsets[key] ? 'top 0s' : 'top 1s',
|
||||||
|
};
|
||||||
|
});
|
||||||
|
|
||||||
|
return {
|
||||||
|
itemStyles,
|
||||||
|
updateItemRef: (key, li) => {
|
||||||
|
li === null ? delete itemRefs.current[key] : (itemRefs.current[key] = li);
|
||||||
|
},
|
||||||
|
updateItemPositions: () => {
|
||||||
|
keys?.forEach((key) => {
|
||||||
|
const itemRef = itemRefs.current[key];
|
||||||
|
if (itemRef) {
|
||||||
|
itemTops.current[key] = itemRef.getBoundingClientRect().top;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
},
|
||||||
|
};
|
||||||
|
};
|
Loading…
Reference in New Issue
Block a user