[9] Реализовать сложный компонент

Реализован компонент "Сворачивание" (Collapse)

Author: webdevia

src/shared/collapse/Collapse.module.scss

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+.collapse-container {
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  margin: 10px 0;
+  overflow: hidden;
+}
+
+.collapse-button {
+  width: 100%;
+  background-color: #007bff;
+  color: white;
+  padding: 10px;
+  border: none;
+  cursor: pointer;
+  text-align: left;
+  font-size: 1em;
+
+  &:hover {
+    background-color: #0056b3;
+  }
+}
+
+.collapse-content {
+  padding: 10px;
+  background-color: #f9f9f9;
+  transition: height 0.3s ease;
+}

src/shared/collapse/Collapse.tsx

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+import React, { useState, useRef, useEffect, ReactNode } from 'react';
+import s from './Collapse.module.scss';
+
+type CollapseProps = {
+  title: string;
+  children: ReactNode;
+};
+
+export const Collapse = ({ title, children }: CollapseProps) => {
+  const [isOpen, setIsOpen] = useState(false);
+  const [height, setHeight] = useState(0);
+  const contentRef = useRef<HTMLDivElement>(null);
+
+  const toggleCollapse = () => {
+    setIsOpen(!isOpen);
+  };
+
+  useEffect(() => {
+    const resizeObserver = new ResizeObserver((entries) =>
+      entries.forEach((entry) => setHeight(entry.borderBoxSize[0].blockSize))
+    );
+
+    const currentContentRef = contentRef.current;
+
+    currentContentRef && resizeObserver.observe(currentContentRef);
+
+    return () => {
+      currentContentRef && resizeObserver.unobserve(currentContentRef);
+    };
+  }, []);
+
+  return (
+    <div className={s['collapse-container']}>
+      <button className={s['collapse-button']} onClick={toggleCollapse}>
+        {title}
+      </button>
+      <div
+        style={{
+          height: `${isOpen ? height : 0}px`,
+          overflow: 'hidden',
+          transition: 'height 300ms ease',
+        }}
+      >
+        <div ref={contentRef} className={s['collapse-content']}>
+          {children}
+        </div>
+      </div>
+    </div>
+  );
+};

src/stories/Collapse.stories.tsx

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+import React from 'react';
+import type { Meta } from '@storybook/react';
+
+import { Collapse } from '../shared/collapse/Collapse';
+import { Button } from '../shared/button/Button';
+
+const meta: Meta<typeof Collapse> = {
+  component: Collapse,
+  title: 'Сложные компоненты/Сворачивание',
+  tags: ['autodocs'],
+};
+
+export default meta;
+
+export const Test = {
+  args: {
+    title: 'Сворачиваемый контент',
+    children: (
+      <>
+        <Button>Some button</Button>
+        <p>
+          Lorem ipsum dolor sit amet consectetur adipisicing elit. Incidunt, perferendis! Non autem consectetur amet
+          sint at saepe veniam doloremque, culpa dolore corporis ad consequuntur temporibus? Magni laudantium eum dolor
+          tempora.
+        </p>
+      </>
+    ),
+  },
+};