feat(QYOG-162): 셀렉트박스 디자인 시스템 개발

src/components/Design/SelectBox/SelectBox.stories.tsx

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+import { StoryObj } from "@storybook/react";
+import { SelectBox } from ".";
+
+const meta = {
+  title: "components/SelectBox",
+  component: SelectBox,
+};
+
+type Story = StoryObj<typeof meta>;
+
+interface OptionInterface {
+  name: string;
+  value: string;
+}
+
+function setSelectOption(result: OptionInterface) {
+  return result;
+}
+
+export const Primary: Story = {
+  args: {
+    options: [
+      { name: "1학년", value: "1" },
+      { name: "2학년", value: "2" },
+    ],
+
+    defaultName: "학년",
+    isRequired: true,
+    setSelectOption: setSelectOption,
+  },
+};
+
+export default meta;

src/components/Design/SelectBox/SelectBox.tsx

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+/*
+ * Created on Sat May 18 2024
+ *
+ * Copyright (c) 2024 Your Company
+ */
+
+import { useState, useRef, useEffect } from "react";
+
+import * as S from "./emotion";
+
+interface OptionInterface {
+  name: string;
+  value: string;
+}
+interface SelectboxProps {
+  options: OptionInterface[];
+  defaultName: string;
+  isRequired: boolean;
+  setSelectOption: (result: OptionInterface) => OptionInterface; // setState or object
+}
+
+export default function SelectBox({
+  options,
+  defaultName = "값을 선택하세요.",
+  isRequired = false,
+  setSelectOption,
+}: SelectboxProps) {
+  const [isOpen, setIsOpen] = useState<boolean>(false);
+  const [selectedName, setSelectedName] = useState(defaultName);
+  const [selectedIndex, setSelectedIndex] = useState<number>(-1);
+
+  function handleOnChangeOption(e: any) {
+    setSelectedName(e.target.innerHTML);
+    setSelectedIndex(e.target.id);
+  }
+
+  useEffect(() => {
+    if (selectedIndex >= 0) setSelectOption(options[selectedIndex]);
+  }, [selectedIndex]);
+
+  return (
+    <S.SelectBoxWrap
+      onClick={() => setIsOpen(!isOpen)}
+      verticalAlign="center"
+      horizonAlign="center"
+    >
+      <S.SelectedDiv verticalAlign="center" horizonAlign="center">
+        {isRequired ? <S.RequireNotice>*</S.RequireNotice> : <></>}
+        <label>{selectedName}</label>
+        <span>⌵</span>
+      </S.SelectedDiv>
+      <S.OptionUl isShow={isOpen}>
+        {options.map((option, idx) => {
+          return (
+            <S.OptionListItem
+              key={idx}
+              id={String(idx)}
+              onClick={handleOnChangeOption}
+            >
+              {option.name}
+            </S.OptionListItem>
+          );
+        })}
+      </S.OptionUl>
+    </S.SelectBoxWrap>
+  );
+}

src/components/Design/SelectBox/emotion.ts

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+/*
+ * Created on Sat June 15 2024
+ *
+ * Copyright (c) 2023 Your Company
+ */
+
+import { Column, Row } from "@/components/Layouts";
+import styled from "@emotion/styled";
+
+export const SelectBoxWrap = styled(Column.div)`
+  border: 1px solid red;
+  position: relative;
+  cursor: pointer;
+
+  padding: 10px;
+  width: 200px;
+  border-radius: 10px;
+`;
+
+export const OptionUl = styled.ul<{ isShow: boolean }>`
+  max-height: ${(props) => (props.isShow ? "none" : "0")};
+  position: absolute;
+  list-style: none;
+  top: 18px;
+  left: 0;
+  overflow: hidden;
+  padding: 0;
+  border: 1px solid blue;
+  border-top: none;
+  width: 100%;
+  margin-top: 22px;
+`;
+
+export const RequireNotice = styled.span`
+  color: red;
+`;
+
+export const SelectedDiv = styled(Row.div)`
+  width: 100%;
+  justify-content: space-between;
+`;
+
+export const OptionListItem = styled.li`
+  background-color: white;
+  &:hover {
+    background-color: black;
+  }
+`;

src/components/Design/SelectBox/index.ts

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+/*
+ * Created on Fri Feb 16 2024
+ *
+ * Copyright (c) 2024 Your Company
+ */
+
+export { default as SelectBox } from "./SelectBox";