[서인] Web Component

src/App.ts

@@ -0,0 +1,188 @@
+import Component from "./core/Component";
+import Items from "./components/Items";
+import ItemAppender from "./components/ItemAppender";
+import ItemFilter from "./components/ItemFilter";
+
+interface IItem {
+  id: number;
+  content: string;
+  active: boolean;
+}
+
+export default class App extends Component {
+  setup() {
+    this.state = { isFilter: 0, items: [{ id: 1, content: 'item1', active: false }, { id: 2, content: 'item2', active: true }] }
+  }
+
+  template() {
+    return `    
+      <header data-component="item-appender"></header>
+        <main data-component="items"></main>
+      <footer data-component="item-filter"></footer>
+    `
+    // 컴포넌트 분할 전
+    // return `
+    // <header>
+    //   <input type="text" class="appender" placeholder="아이템 내용 입력">
+    // </header>
+    // <main>
+      // <ul>
+      //   ${this.filteredItems.map(({ id, content, active }) =>
+      // `<li data-id="${id}">
+      //       ${content}
+      //       <button class="toggleButton" data-id="${id}" style="color: ${active ? '#09F' : '#F09'}">
+      //         ${active ? '활성' : '비활성' }
+      //       </button>
+      //       <button class="deleteButton" data-id="${id}">삭제</button>
+      //     </li>`).join('')}
+      // </ul>
+    // </main>
+    // <footer>
+      // <button class="filterButton" data-is-filter="0">전체 보기</button>
+      // <button class="filterButton" data-is-filter="1">활성 보기</button>
+      // <button class="filterButton" data-is-filter="2">비활성 보기</button>
+    // </footer>
+    // `
+  }
+
+  mounted() {
+    const { filteredItems, addItem, deleteItem, toggleItem, filterItem } = this;
+    const $itemAppender = this.$target.querySelector('[data-component="item-appender"]')
+    const $items = this.$target.querySelector('[data-component="items"]')
+    const $itemFilter = this.$target.querySelector('[data-component="item-filter"]')
+
+    new ItemAppender(($itemAppender as HTMLElement), {
+      addItem: addItem.bind(this)
+    })
+
+    new Items(($items as HTMLElement), {
+      filteredItems,
+      deleteItem: deleteItem.bind(this),
+      toggleItem: toggleItem.bind(this)
+    })
+
+    new ItemFilter(($itemFilter as HTMLElement), {
+      filterItem: filterItem.bind(this)
+    })
+  }
+
+  get filteredItems(): IItem[] {
+    const { isFilter, items } = this.state;
+    return items.filter(({ active }: { active: boolean }) => (isFilter === 1 && active) || (isFilter === 2 && !active) || (isFilter === 0) )
+  }
+
+  addItem(content: string) {
+    const { items } = this.state;
+    const id = Math.max(0, ...items.map((v: IItem) => v.id)) + 1;
+    const active = false;
+    this.setState({
+      items: [
+        ...items,
+        {id, content, active}
+      ]
+    })
+  }
+
+  deleteItem(id: number) {
+    const items = [...this.state.items];
+    const index = items.findIndex(item => item.id === id)
+    items.splice(index, 1)
+    this.setState({ items })
+  }
+
+  toggleItem(id: number) {
+    const items = [...this.state.items];
+      const index = items.findIndex(v => v.id === id);
+      items[index].active = !items[index].active;
+    this.setState({ items })
+  }
+
+  filterItem(isFilter: number) {
+    this.setState({ isFilter })
+  }
+
+  // 컴포넌트 분할 전
+  // setEvent() {
+    //   this.addEvent<KeyboardEvent>('keyup', '.appender', (event) => {
+    //     const { key, target } = event
+    //     if (key !== 'Enter') return;
+    //     const { items } = this.state;
+    //     const id = Math.max(0, ...items.map((v: IItem) => v.id)) + 1;
+    //     const content = (target as HTMLInputElement)?.value;
+    //     const active = false;
+    //     this.setState({
+    //       items: [
+    //         ...items,
+    //         {id, content, active}
+    //       ]
+    //     })
+    //   })
+
+    // this.addEvent('click', '.deleteButton', ({ target }) => {
+    //   const items = [...this.state.items];
+    //   if (target instanceof HTMLElement && target.dataset.id) {
+    //     const id = Number(target?.dataset?.id)
+    //     const index = items.findIndex(item => item.id === id)
+    //     items.splice(index, 1)
+    //     this.setState({ items })
+    //   }
+    // })
+
+    // this.addEvent('click', '.toggleButton', ({ target }) => {
+    //   const items = [...this.state.items];
+    //   if (target instanceof HTMLElement && target.dataset.id) {
+    //     const id = Number(target?.dataset?.id)
+    //     const index = items.findIndex(v => v.id === id);
+    //     items[index].active = !items[index].active;
+    //   }
+    //   this.setState({ items })
+    // })
+
+    // this.addEvent('click', '.filterButton', ({ target }) => {
+    //   if (target instanceof HTMLElement && target.dataset.isFilter) {
+    //     this.setState({ isFilter: Number(target.dataset.isFilter) })
+    //   }
+  // })
+
+    // 이벤트 버블링 추상화 적용한 코드
+    // this.addEvent('click', '.addButton', ({ target }) => {
+    //   const items = [...this.state.items];
+    //   this.setState({ items: [...items, `item${items.length + 1}`] })
+    // })
+    // this.addEvent('click', '.deleteButton', ({ target }) => {
+    //   const items = [...this.state.items];
+    //     if (target instanceof HTMLElement && target.dataset.index) {
+    //       items.splice(Number(target?.dataset?.index), 1)
+    //     }
+    //   this.setState({ items })
+    // })
+    // 이벤트 버블링 적용한 코드
+    // this.$target.addEventListener('click', ({ target }) => {
+    //   if (!target || !(target instanceof HTMLElement)) return;
+    //   const items = [...this.state.items];
+
+    //   if (target && target.classList && target.classList.contains('addButton')) {
+    //     this.setState({ items: [...items, `item${items.length + 1}`] })
+    //   }
+
+    //   if (target && target.classList && target.classList.contains('deleteButton')) {
+    //     if (target instanceof HTMLElement && target.dataset.index) {
+    //           items.splice(Number(target?.dataset?.index), 1)
+    //         }
+    //     this.setState({ items })
+    //   }
+    // })
+
+    // 이벤트 버블링 적용 전 코드
+    // this.$target.querySelectorAll('.deleteButton')?.forEach(deleteButton => deleteButton?.addEventListener('click', ({target}) => {
+    //   const items  = [...this.state.items];
+    //   if (target instanceof HTMLElement && target.dataset.index) {
+    //     items.splice(Number(target?.dataset?.index), 1)
+    //   }
+    //   this.setState({ items })
+    // }))
+    // this.$target.querySelector('.addButton')?.addEventListener('click', () => {
+    //   const { items } = this.state;
+    //   this.setState({ items: [...items, `item${items.length + 1}`] })
+    // })
+}

src/components/ItemAppender.ts

@@ -0,0 +1,18 @@
+import Component from "../core/Component";
+
+export default class ItemAppender extends Component {
+  template() {
+    return `
+      <input type="text" class="appender" placeholder="아이템 내용 입력">
+    `
+  }
+
+  setEvent() {
+    const { addItem } = this.props
+    this.addEvent<KeyboardEvent>('keyup', '.appender', (event) => {
+      const { key, target } = event
+      if (key !== 'Enter') return;
+      addItem((target as HTMLInputElement)?.value)
+    })
+  }
+}

src/components/ItemFilter.ts

@@ -0,0 +1,31 @@
+import Component from "../core/Component";
+
+interface IItemFilter {
+  filterItem: (isFilter: number ) => void;
+}
+
+export default class ItemFilter extends Component {
+  props: IItemFilter;
+
+  constructor($target: HTMLElement, props: IItemFilter) {
+    super($target, props);
+    this.props = props;
+  }
+
+  template() {
+    return `
+      <button class="filterButton" data-is-filter="0">전체 보기</button>
+      <button class="filterButton" data-is-filter="1">활성 보기</button>
+      <button class="filterButton" data-is-filter="2">비활성 보기</button>
+    `
+  }
+
+  setEvent() {
+    const { filterItem } = this.props
+    this.addEvent('click', '.filterButton', ({ target }) => {
+      if (target instanceof HTMLElement && target.dataset.isFilter) {
+        filterItem(Number(target.dataset.isFilter))
+      }
+    })
+  }
+}

src/components/Items.ts

@@ -0,0 +1,40 @@
+import Component from "../core/Component";
+
+interface IItem {
+  id: number;
+  content: string;
+  active: boolean;
+}
+
+export default class Items extends Component {
+  template() {
+    const { filteredItems } = this.props
+    return `
+      <ul>
+        ${filteredItems.map(({ id, content, active }: IItem) =>
+        `<li data-id="${id}">
+            ${content}
+            <button class="toggleButton" data-id="${id}" style="color: ${active ? '#09F' : '#F09'}">
+              ${active ? '활성' : '비활성' }
+            </button>
+            <button class="deleteButton" data-id="${id}">삭제</button>
+          </li>`).join('')}
+      </ul>
+    `
+  }
+
+  setEvent() {
+    const { deleteItem, toggleItem } = this.props
+    this.addEvent('click', '.deleteButton', ({ target }) => {
+      if (target instanceof HTMLElement && target.dataset.id) {
+        deleteItem(Number(target?.dataset?.id))
+     }
+    })
+
+    this.addEvent('click', '.toggleButton', ({ target }) => {
+      if (target instanceof HTMLElement && target.dataset.id) {
+        toggleItem(Number(target?.dataset?.id))
+      }
+    })
+  }
+}

src/core/Component.ts

@@ -0,0 +1,47 @@
+interface IState {
+  [key: string]: any;
+}
+
+interface IProps {
+  [key: string]: any;
+}
+
+export default class Component {
+  $target: HTMLElement;
+  props: IProps;
+  state: IState;
+  isMounted: boolean;
+
+  constructor($target: HTMLElement, props: IProps = {}) {
+    this.$target = $target;
+    this.props = props;
+    this.state = {};
+    this.isMounted = false;
+    this.setEvent();
+    this.setup();
+    this.render();
+  }
+  setup() { };
+  mounted() {
+    if (!this.isMounted) {
+      this.isMounted = true;
+    }
+  };
+  template() { return ''; }
+  render() {
+    this.$target.innerHTML = this.template();
+    !this.isMounted && this.mounted()
+  }
+  setEvent() { }
+  setState(newState: IState) {
+    this.state = { ...this.state, ...newState };
+    this.render()
+  }
+
+  addEvent<T extends Event>(eventType: string, selector: string, callback: (event: T) => void ) {
+    this.$target.addEventListener(eventType, event => {
+      if (event && event.target instanceof HTMLElement && !event.target.closest(selector)) return false;
+      callback(event as T)
+    })
+  }
+}

src/main.ts

@@ -1 +1,14 @@
-// your Code
+import App from './App'
+
+class Main {
+  constructor(){
+    const $app: Element | null = document.querySelector('#app');
+    if ($app instanceof HTMLElement) {
+      new App($app);
+    } else {
+      console.error('Element with ID "app" not found.');
+    }
+  }
+}
+
+new Main()