feat(system): Dropdown 컴포넌트 구현

src/system/components/Dropdown/Dropdown.tsx

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+import { CheckboxItem } from './compounds/CheckboxItem';
+import { Content } from './compounds/Content';
+import { Root } from './compounds/Root';
+import { Separator } from './compounds/Separator';
+import { Trigger } from './compounds/Trigger';
+import { TriggerArrow } from './compounds/TriggerArrow';
+
+export const Dropdown = Object.assign(Root, {
+  Trigger,
+  TriggerArrow,
+  Content,
+  Separator,
+  CheckboxItem,
+});

src/system/components/Dropdown/anatomy.ts

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+export type DropdownAnatomy = 'trigger-arrow' | 'content' | 'separator' | 'checkbox-item';

src/system/components/Dropdown/compounds/CheckboxItem.tsx

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+import { If } from '@/system/utils/If';
+import { Icon } from '../..';
+import { ComponentProps, MouseEvent, forwardRef } from 'react';
+import { cn } from '@/utils';
+import { useDropdownStyles } from '../styles/useDropdownStyles';
+import { mergeProps } from '@/utils/mergeProps';
+import { color } from '@/system/token/color';
+import { useDropdownContext } from '../context';
+
+interface Props extends ComponentProps<'button'> {
+  checked?: boolean;
+}
+
+export const CheckboxItem = forwardRef<HTMLButtonElement, Props>(function CheckboxItem(
+  { checked, disabled, children, ...restProps },
+  ref,
+) {
+  const { styles } = useDropdownContext();
+  const { logics } = useDropdownContext();
+
+  return (
+    <button ref={ref} disabled={disabled} {...mergeProps(styles['checkbox-item'], logics['checkbox-item'], restProps)}>
+      {children}
+      <If condition={checked}>
+        <Icon name="check" color={color.neutral30} size={20} />
+      </If>
+    </button>
+  );
+});

src/system/components/Dropdown/compounds/Content.tsx

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+import * as RadixDropdownMenu from '@radix-ui/react-dropdown-menu';
+import { ComponentProps } from 'react';
+import { mergeProps } from '@/utils/mergeProps';
+import { useDropdownContext } from '../context';
+
+type ContentProps = ComponentProps<typeof RadixDropdownMenu.Content>;
+
+export function Content(props: ContentProps) {
+  const { styles } = useDropdownContext();
+
+  return <RadixDropdownMenu.Content {...mergeProps(props, styles.content)} />;
+}

src/system/components/Dropdown/compounds/Root.tsx

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+import * as RadixDropdownMenu from '@radix-ui/react-dropdown-menu';
+import { PropsWithChildren, useState } from 'react';
+import { DropdownProvider } from '../context';
+import { useDropdownStyles } from '../styles/useDropdownStyles';
+import { useDropdownLogics } from '../logics/useDropdownLogics';
+
+interface RootProps {
+  defaultOpen?: boolean;
+}
+
+// 추후 Controlled방식도 지원
+export function Root({ defaultOpen = false, children }: PropsWithChildren<RootProps>) {
+  const [open, setOpen] = useState(defaultOpen);
+  const dropdownStyles = useDropdownStyles();
+  const dropdownLogics = useDropdownLogics({ onOpenChange: setOpen });
+
+  return (
+    <RadixDropdownMenu.Root open={open} onOpenChange={setOpen}>
+      <DropdownProvider open={open} styles={dropdownStyles} logics={dropdownLogics} onOpenChange={setOpen}>
+        {children}
+      </DropdownProvider>
+    </RadixDropdownMenu.Root>
+  );
+}

src/system/components/Dropdown/compounds/Separator.tsx

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+import { useDropdownContext } from '../context';
+
+export function Separator() {
+  const { styles } = useDropdownContext();
+
+  return <div {...styles.separator} />;
+}

src/system/components/Dropdown/compounds/Trigger.tsx

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+import * as RadixDropdownMenu from '@radix-ui/react-dropdown-menu';
+import { ComponentProps } from 'react';
+
+export type TriggerProps = ComponentProps<typeof RadixDropdownMenu.Trigger>;
+
+export function Trigger({ children }: TriggerProps) {
+  return <RadixDropdownMenu.Trigger>{children}</RadixDropdownMenu.Trigger>;
+}

src/system/components/Dropdown/compounds/TriggerArrow.tsx

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+import { motion } from 'framer-motion';
+import { Icon } from '../..';
+import { useDropdownContext } from '../context';
+import { color } from '@/system/token/color';
+
+export function TriggerArrow() {
+  const { open } = useDropdownContext();
+
+  return (
+    <motion.div
+      variants={{
+        closed: { rotate: '0deg' },
+        opened: { rotate: '-180deg' },
+      }}
+      transition={{ duration: 0.1 }}
+      animate={open ? 'opened' : 'closed'}>
+      <Icon name="downChevron" color={color.neutral30} />
+    </motion.div>
+  );
+}

src/system/components/Dropdown/context.tsx

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+import { generateContext } from '@/lib';
+import { DropdownStyles } from './styles/useDropdownStyles';
+import { DropdownLogics } from './logics/useDropdownLogics';
+
+interface DropdownContext {
+  open: boolean;
+  styles: DropdownStyles;
+  logics: DropdownLogics;
+  onOpenChange: (open: boolean) => void;
+}
+
+export const [DropdownProvider, useDropdownContext] = generateContext<DropdownContext>({
+  name: 'Dropdown',
+});

src/system/components/Dropdown/logics/useDropdownLogics.ts

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+import { DropdownAnatomy } from '../anatomy';
+
+export type DropdownLogics = Record<DropdownAnatomy, any>;
+
+interface Props {
+  onOpenChange: (open: boolean) => void;
+}
+
+export function useDropdownLogics({ onOpenChange }: Props): DropdownLogics {
+  return {
+    content: {},
+    separator: {},
+    'trigger-arrow': {},
+    'checkbox-item': {
+      onClick: () => onOpenChange(false),
+    },
+  };
+}

src/system/components/Dropdown/styles/useDropdownStyles.ts

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+import { DropdownAnatomy } from '../anatomy';
+
+interface DropdownStyle {
+  className?: string;
+}
+
+export type DropdownStyles = Record<DropdownAnatomy, DropdownStyle>;
+
+export function useDropdownStyles(): Record<DropdownAnatomy, DropdownStyle> {
+  return {
+    content: {
+      className:
+        'flex flex-col py-[8px] shadow-[0px_2px_8px_0px_rgba(0,0,0,0.12),0px_0px_1px_0px_rgba(0,0,0,0.08)] min-w-[170px] bg-white rounded-[12px] border-[1px] hover:border-neutral-20',
+    },
+    separator: {
+      className: 'h-[8px] bg-nuetral-3 w-full',
+    },
+    'trigger-arrow': {},
+    'checkbox-item': {
+      className:
+        'flex justify-between items-center mx-[8px] my-[4px] px-[8px] py-[4px] text-label1 font-medium text-neutral-80 rounded-[6px] hover:bg-neutral-3 disabled:text-neutral-30 disabled:bg-white',
+    },
+  };
+}

src/system/components/index.ts

@@ -1,5 +1,6 @@
 export { Button } from './Button/Button';
 export type { ButtonProps } from './Button/Button';
+export { Dropdown } from './Dropdown/Dropdown';
 export { Icon } from './Icon/Icon';
 export type { IconProps } from './Icon/Icon';
 export { Text } from './Text/Text';