<!-- components/Flexbox/FlexContainer.vue -->
<template>
  <div
    ref="containerRef"
    class="flex-container"
    :style="containerStyles"
    @slotchange="handleSlotChange"
  >
    <slot></slot>
  </div>
</template>

<script setup>
import { ref, computed, onMounted, onUnmounted } from 'vue'

const props = defineProps({
  display: {
    type: Boolean,
    default: true
  },
  flexDirection: {
    type: String,
    default: 'row',
    validator: (value) => [
      'row',
      'row-reverse',
      'column',
      'column-reverse'
    ].includes(value)
  },
  flexWrap: {
    type: String,
    default: 'nowrap',
    validator: (value) => ['nowrap', 'wrap', 'wrap-reverse'].includes(value)
  },
  flexFlow: String,
  justifyContent: {
    type: String,
    default: 'flex-start',
    validator: (value) => [
      'flex-start',
      'flex-end',
      'center',
      'space-between',
      'space-around',
      'space-evenly'
    ].includes(value)
  },
  alignItems: {
    type: String,
    default: 'stretch',
    validator: (value) => [
      'flex-start',
      'flex-end',
      'center',
      'baseline',
      'stretch'
    ].includes(value)
  },
  alignContent: {
    type: String,
    default: 'stretch',
    validator: (value) => [
      'flex-start',
      'flex-end',
      'center',
      'space-between',
      'space-around',
      'stretch'
    ].includes(value)
  },
  gap: {
    type: String,
    default: '0'
  },
  inline: {
    type: Boolean,
    default: false
  }
})

const emit = defineEmits(['resize', 'childAdded', 'childRemoved'])

const containerRef = ref(null)
let resizeObserver = null
let mutationObserver = null

const containerStyles = computed(() => {
  const styles = {
    gap: props.gap,
    justifyContent: props.justifyContent,
    alignItems: props.alignItems,
    alignContent: props.alignContent
  }

  if (props.display) {
    styles.display = props.inline ? 'inline-flex' : 'flex'
    styles.flexFlow = props.flexFlow 
      ? props.flexFlow 
      : `${props.flexDirection} ${props.flexWrap}`
  } else {
    styles.display = props.inline ? 'inline-block' : 'block'
  }

  return styles
})

const handleResize = (entries) => {
  for (const entry of entries) {
    const { width, height } = entry.contentRect
    emit('resize', { width, height })
  }
}

const handleMutation = (mutations) => {
  for (const mutation of mutations) {
    mutation.addedNodes.forEach(node => {
      if (node.nodeType === Node.ELEMENT_NODE) {
        emit('childAdded', node)
      }
    })
    mutation.removedNodes.forEach(node => {
      if (node.nodeType === Node.ELEMENT_NODE) {
        emit('childRemoved', node)
      }
    })
  }
}

onMounted(() => {
  // 初始化ResizeObserver
  resizeObserver = new ResizeObserver(handleResize)
  if (containerRef.value) {
    resizeObserver.observe(containerRef.value)
  }

  // 初始化MutationObserver
  mutationObserver = new MutationObserver(handleMutation)
  mutationObserver.observe(containerRef.value, {
    childList: true,
    subtree: false
  })
})

onUnmounted(() => {
  resizeObserver?.disconnect()
  mutationObserver?.disconnect()
})
</script>

<style scoped>
.flex-container {
  width: 100%;
  min-height: 50px;
  box-sizing: border-box;
}
</style>

<!-- 示例1: 基本行布局 -->
<template>
  <FlexContainer>
    <div v-for="n in 3" :key="n" class="box">Item {{ n }}</div>
  </FlexContainer>
</template>

<script setup>
import FlexContainer from '@/components/Flexbox/FlexContainer.vue'
</script>

<style>
.box {
  padding: 20px;
  background: #eee;
  margin: 5px;
}
</style>

<!-- 示例2: 列布局居中 -->
<template>
  <FlexContainer 
    flex-direction="column"
    justify-content="center"
    align-items="center"
    gap="10px"
    style="height: 300px; border: 1px solid #ccc;"
  >
    <div v-for="n in 3" :key="n" class="box">Item {{ n }}</div>
  </FlexContainer>
</template>

<!-- 示例3: 换行布局 -->
<template>
  <FlexContainer
    flex-wrap="wrap"
    gap="20px"
    @resize="handleResize"
  >
    <div v-for="n in 8" :key="n" style="width: 200px" class="box">Item {{ n }}</div>
  </FlexContainer>
</template>

<script setup>
const handleResize = (size) => {
  console.log('Container size changed:', size)
}
</script>

<!-- 示例4: 响应式布局 -->
<template>
  <FlexContainer
    :flex-direction="isMobile ? 'column' : 'row'"
    :gap="isMobile ? '10px' : '20px'"
  >
    <div v-for="n in 4" :key="n" class="box">Item {{ n }}</div>
  </FlexContainer>
</template>

<script setup>
import { ref, onMounted, onUnmounted } from 'vue'

const isMobile = ref(false)

const checkMobile = () => {
  isMobile.value = window.innerWidth < 768
}

onMounted(() => {
  window.addEventListener('resize', checkMobile)
  checkMobile()
})

onUnmounted(() => {
  window.removeEventListener('resize', checkMobile)
})
</script>

<!-- 示例5: 事件处理 -->
<template>
  <FlexContainer
    @child-added="handleChildAdded"
    @child-removed="handleChildRemoved"
    @resize="handleResize"
    style="border: 1px solid #ddd; padding: 10px;"
  >
    <div v-for="item in items" :key="item" class="box">{{ item }}</div>
  </FlexContainer>
  <button @click="addItem">Add Item</button>
  <button @click="removeItem">Remove Item</button>
</template>

<script setup>
import { ref } from 'vue'

const items = ref(['A', 'B', 'C'])

const addItem = () => {
  items.value.push(String.fromCharCode(65 + items.value.length))
}

const removeItem = () => {
  if (items.value.length > 0) {
    items.value.pop()
  }
}

const handleChildAdded = (element) => {
  console.log('Child added:', element)
  element.style.backgroundColor = '#e3f2fd'
}

const handleChildRemoved = (element) => {
  console.log('Child removed:', element)
}

const handleResize = ({ width, height }) => {
  console.log(`New container size: ${width}x${height}`)
}
</script>

import { createRouter, createWebHistory } from 'vue-router'
import RightClickMenuView from '../views/RightClickMenuView.vue'
import RangePickerView from '../views/RangePickerView.vue'


const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  routes: [
    {
      path: '/',
      name: 'progress',
      component:  () => import('../views/ProgressView.vue'),
    },
    {
      path: '/tabs',
      name: 'tabs',
      // route level code-splitting
      // this generates a separate chunk (About.[hash].js) for this route
      // which is lazy-loaded when the route is visited.
      // 标签页（Tabs）
      component: () => import('../views/TabsView.vue'),
    },
    {
      path: '/accordion',
      name: 'accordion',
      // 折叠面板（Accordion）
      component: () => import('../views/AccordionView.vue'),
    },
    {
      path: '/timeline',
      name: 'timeline',
      // 时间线（Timeline）
      component: () => import('../views/TimelineView.vue'),
    },
    {
      path: '/backToTop',
      name: 'backToTop',
      component: () => import('../views/BackToTopView.vue')
    },
    {
      path: '/notification',
      name: 'notification',
      component: () => import('../views/NotificationView.vue')
    },
    {
      path: '/card',
      name: 'card',
      component: () => import('../views/CardView.vue')
    },
    {
      path: '/infiniteScroll',
      name: 'infiniteScroll',
      component: () => import('../views/InfiniteScrollView.vue')
    },
    {
      path: '/switch',
      name: 'switch',
      component: () => import('../views/SwitchView.vue')
    },
    {
      path: '/sidebar',
      name: 'sidebar',
      component: () => import('../views/SidebarView.vue')
    },
    {
      path: '/breadcrumbs',
      name: 'breadcrumbs',
      component: () => import('../views/BreadcrumbsView.vue')
    },
    {
      path: '/masonryLayout',
      name: 'masonryLayout',
      component: () => import('../views/MasonryLayoutView.vue')
    },
    {
      path: '/rating',
      name: 'rating',
      component: () => import('../views/RatingView.vue')
    },
    {
      path: '/datePicker',
      name: 'datePicker',
      component: () => import('../views/DatePickerView.vue')
    },
    {
      path: '/colorPicker',
      name: 'colorPicker',
      component: () => import('../views/ColorPickerView.vue')
    },
    {
      path: '/rightClickMenu',
      name: 'rightClickMenu',
      component: RightClickMenuView
    },
    {
      path: '/rangePicker',
      name: 'rangePicker',
      component: () => import('../views/RangePickerView.vue')
    },
    {
      path: '/navbar',
      name: 'navbar',
      component: () => import('../views/NavbarView.vue')
    },
    {
      path: '/formValidation',
      name: 'formValidation',
      component: () => import('../views/FormValidationView.vue')
    },
    {
      path: '/copyToClipboard',
      name: 'copyToClipboard',
      component: () => import('../views/CopyToClipboardView.vue')
    },
    {
      path: '/clickAnimations',
      name: 'clickAnimations',
      component: () => import('../views/ClickAnimationsView.vue')
    },
    {
      path: '/thumbnailList',
      name: 'thumbnailList',
      component: () => import('../views/ThumbnailListView.vue')
    },
    {
      path: '/keyboardShortcuts',
      name: 'keyboardShortcuts',
      component: () => import('../views/KeyboardShortcutsView.vue')
    },
    {
      path: '/commentSystem',
      name: 'commentSystem',
      component: () => import('../views/CommentSystemView.vue')
    },
    {
      path: '/qRCode',
      name: 'qRCode',
      component: () => import('../views/QRCodeView.vue')
    },
    {
      path: '/radioButton',
      name: 'radioButton',
      component: () => import('../views/RadioButtonView.vue')
    },
    {
      path: '/slider',
      name: 'slider',
      component: () => import('../views/SliderView.vue')
    },
    {
      path: '/scrollAnimations',
      name: 'scrollAnimations',
      component: () => import('../views/ScrollAnimationsView.vue')
    },
    {
      path: '/textInputView',
      name: 'textInputView',
      component: () => import('../views/TextInputView.vue')
    },
    {
      path: '/divider',
      name: 'divider',
      component: () => import('../views/DividerView.vue')
    },
    {
      path: '/checkbox',
      name: 'checkbox',
      component: () => import('../views/CheckboxView.vue')
    },
    {
      path: '/tagInput',
      name: 'tagInput',
      component: () => import('../views/TagInputView.vue')
    },
    {
      path: '/dropdownSelect',
      name: 'dropdownSelect',
      component: () => import('../views/DropdownSelectView.vue')
    },
    {
      path: '/list',
      name: 'list',
      component: () => import('../views/ListView.vue')
    },
    {
      path: '/header',
      name: 'header',
      component: () => import('../views/HeaderView.vue')
    },
    {
      path: '/footer',
      name: 'footer',
      component: () => import('../views/FooterView.vue')
    },
    {
      path: '/pagination',
      name: 'pagination',
      component: () => import('../views/PaginationView.vue')
    },
    {
      path: '/floatingActionButton',
      name: 'floatingActionButton',
      component: () => import('../views/FloatingActionButtonView.vue')
    },
    {
      path: '/gridLayout',
      name: 'gridLayout',
      component: () => import('../views/GridLayoutView.vue')
    },
    {
      path: '/passwordInput',
      name: 'passwordInput',
      component: () => import('../views/PasswordInputView.vue')
    },
    {
      path: '/flexbox',
      name: 'flexbox',
      component: () => import('../views/FlexboxView.vue')
    }
  ],
})

export default router

<script setup>
import { RouterLink, RouterView } from 'vue-router'
import HelloWorld from './components/HelloWorld.vue'
</script>

<template>
  <header>
    <img alt="Vue logo" class="logo" src="@/assets/logo.svg" width="125" height="125" />

    <div class="wrapper">
      <HelloWorld msg="You did it!" />
      <nav>
        <RouterLink to="/">Progress</RouterLink>
        <RouterLink to="/tabs">Tabs</RouterLink>
        <RouterLink to="/accordion">Accordion</RouterLink>
        <RouterLink to="/timeline">Timeline</RouterLink>
        <RouterLink to="/backToTop">BackToTop</RouterLink>
        <RouterLink to="/notification">Notification</RouterLink>
        <RouterLink to="/card">Card</RouterLink>
        <RouterLink to="/infiniteScroll">InfiniteScroll</RouterLink>
        <RouterLink to="/switch">Switch</RouterLink>
        <RouterLink to="/sidebar">Sidebar</RouterLink>
        <RouterLink to="/breadcrumbs">Breadcrumbs</RouterLink>
        <RouterLink to="/masonryLayout">MasonryLayout</RouterLink>
        <RouterLink to="/rating">Rating</RouterLink>
        <RouterLink to="/datePicker">DatePicker</RouterLink>
        <RouterLink to="/colorPicker">ColorPicker</RouterLink>
        <RouterLink to="/rightClickMenu">RightClickMenu</RouterLink>
        <RouterLink to="/rangePicker">RangePicker</RouterLink>
        <RouterLink to="/navbar">Navbar</RouterLink>
        <RouterLink to="/formValidation">FormValidation</RouterLink>
        <RouterLink to="/copyToClipboard">CopyToClipboard</RouterLink>
        <RouterLink to="/clickAnimations">ClickAnimations</RouterLink>
        <RouterLink to="/thumbnailList">ThumbnailList</RouterLink>
        <RouterLink to="/keyboardShortcuts">KeyboardShortcuts</RouterLink>
        <RouterLink to="/commentSystem">CommentSystem</RouterLink>
        <RouterLink to="/qRCode">QRCode</RouterLink>
        <RouterLink to="/radioButton">RadioButton</RouterLink>
        <RouterLink to="/slider">Slider</RouterLink>
        <RouterLink to="/scrollAnimations">ScrollAnimations</RouterLink>
        <RouterLink to="/textInputView">TextInput</RouterLink>
        <RouterLink to="/divider">Divider</RouterLink>
        <RouterLink to="/checkbox">Checkbox</RouterLink>
        <RouterLink to="/tagInput">TagInput</RouterLink>
        <RouterLink to="/dropdownSelect">DropdownSelect</RouterLink>
        <RouterLink to="/list">List</RouterLink>
        <RouterLink to="/header">Header</RouterLink>
        <RouterLink to="/footer">Footer</RouterLink>
        <RouterLink to="/pagination">Pagination</RouterLink>
        <RouterLink to="/floatingActionButton">FloatingActionButton</RouterLink>
        <RouterLink to="/gridLayout">GridLayout</RouterLink>
        <RouterLink to="/passwordInput">PasswordInput</RouterLink>
        <RouterLink to="/flexbox">Flexbox</RouterLink>
      </nav>
    </div>
  </header>
  <RouterView />
</template>

<style scoped>
header {
  line-height: 1.5;
  max-height: 100vh;
}

.logo {
  display: block;
  margin: 0 auto 2rem;
}

nav {
  width: 100%;
  font-size: 12px;
  text-align: center;
  margin-top: 2rem;
}

nav a.router-link-exact-active {
  color: var(--color-text);
}

nav a.router-link-exact-active:hover {
  background-color: transparent;
}

nav a {
  display: inline-block;
  padding: 0 1rem;
  border-left: 1px solid var(--color-border);
}

nav a:first-of-type {
  border: 0;
}

@media (min-width: 1024px) {
  header {
    display: flex;
    place-items: center;
    padding-right: calc(var(--section-gap) / 2);
  }

  .logo {
    margin: 0 2rem 0 0;
  }

  header .wrapper {
    display: flex;
    place-items: flex-start;
    flex-wrap: wrap;
  }

  nav {
    text-align: left;
    margin-left: -1rem;
    font-size: 1rem;

    padding: 1rem 0;
    margin-top: 1rem;
  }
}
</style>