第3章 封装组件初级篇（下）

1.趋势标记

--components/trend
	--src/index.vue
	--index.ts
	

src/index.vue

<template>
  <div class="trend">
    <div class="text" :style="{ color: textColor }">
      <slot v-if="slots.default"></slot>
      <div v-else>{{ text }}</div>
    </div>
    <div class="icon">
      
      <!-- 动态显示图标 -->
      <component
        :is="`el-icon-${toLine(upIcon)}`"
        :style="{ color: !reverseColor ? upIconColor : '#52c41a' }"
        v-if="type === 'up'"
      ></component>
      <component
        :is="`el-icon-${toLine(downIcon)}`"
        :style="{ color: !reverseColor ? downIconColor : '#f5222d' }"
        v-else
      ></component>
    
    </div>
  </div>
</template>

<script lang='ts' setup>
import { useSlots, computed } from 'vue'
import { toLine } from '../../../utils'
let props = defineProps({
  // 标记当前趋势是上升(up)还是下降(down)
  type: {
    type: String,
    default: 'up'
  },
  // 上升趋势显示的图标
  upIcon: {
    type: String,
    default: 'ArrowUp'
  },
  // 下降趋势显示的图标
  downIcon: {
    type: String,
    default: 'ArrowDown'
  },
  // 趋势显示的文字
  // 1. 父组件传递过来的数据
  // 2. 插槽
  text: {
    type: String,
    default: '文字'
  },
  // 颜色翻转只在默认的颜色下生效 如果使用了自定义颜色 这个属性就不生效了
  reverseColor: {
    type: Boolean,
    default: false
  },
  // 上升趋势图标颜色
  upIconColor: {
    type: String,
    default: '#f5222d'
  },
  // 下降趋势的图标颜色
  downIconColor: {
    type: String,
    default: '#52c41a'
  },
  // 上升趋势文字颜色
  upTextColor: {
    type: String,
    default: 'rgb(0,0,0)'
  },
  // 下降趋势的文字颜色
  downTextColor: {
    type: String,
    default: 'rgb(0,0,0)'
  }
})
// 获取插槽内容
let slots = useSlots()

// 文字颜色
let textColor = computed(() => {
  return props.type === 'up' ? props.upTextColor : props.downTextColor
})

</script>

<style lang='scss' scoped>
.trend {
  display: flex;
  align-items: center;
  .text {
    font-size: 12px;
    margin-right: 4px;
  }
  .icon {
    svg {
      width: 0.8em;
      height: 0.8em;
    }
  }
}
</style>

index.ts

import { App } from 'vue'
import trend from './src/index.vue'

// 让这个组件可以通过use的形式使用
export default {
  install(app: App) {
    app.component('m-trend', trend)
  }
}

components/index.ts注册

import { App } from 'vue'
import trend from './trend'

const components = [
 trend
]

export default {
  install(app: App) {
    components.map(item => {
      app.use(item)
    })
  }
}

在views/trend中使用

views
	--trend/index.vue

trend/index.vue

<template>
  <div>
    <el-divider>正常趋势</el-divider>
    <div class="flex">
      <div>
        <m-trend text="营业额"></m-trend>
      </div>
      <div>
        <m-trend text="销售额" type="down"></m-trend>
      </div>
    </div>
        <br />
    <el-divider>颜色翻转</el-divider>
    <div class="flex">
    <div><m-trend text="销售额" reverseColor></m-trend></div>
    <div><m-trend text="营业额" type="down" reverseColor></m-trend></div>
    </div>
    <br />
    <el-divider>自定义图标颜色</el-divider>
    <div class="flex">
      <div>
        <m-trend text="营业额" upIconColor="blue"></m-trend>
      </div>
      <div>
        <m-trend text="销售额" type="down" downIconColor="#123456"></m-trend>
      </div>
    </div>

    <br />
    <el-divider>自定义文字颜色</el-divider>
    <div class="flex">
    <div><m-trend text="营业额" upTextColor="blue"></m-trend></div>
    <div><m-trend text="销售额" type="down" downTextColor="yellow"></m-trend></div>
    </div>
    <br />
    <el-divider>自定义图标</el-divider>
    <div class="flex">
    <div><m-trend upIcon="CaretTop">营业额</m-trend></div>
    <div><m-trend type="down" downIcon="CaretBottom">销售额</m-trend></div>
  </div>
   </div>
</template>

<script lang='ts' setup>
</script>

<style lang='scss' scoped>
.flex {
  display: flex;
  div {
    margin-right: 10px;
  }
}
</style>

2.list列表组件

--components/list
	--src/index.vue
	--src/types.ts
	--index.ts	

src/index.vue

<template>
  <div class="list-tabs__item">
    <el-tabs>
      <el-tab-pane v-for="(item, index) in list" :key="index" :label="item.title">
        <el-scrollbar max-height="300px">
          <div
            class="container"
            @click="clickItem(item1, index1)"
            v-for="(item1, index1) in item.content"
            :key="index1"
          >
            <div class="avatar" v-if="item1.avatar">
              <el-avatar size="small" :src="item1.avatar"></el-avatar>
            </div>
            <div class="content">
              <div v-if="item1.title" class="title">
                <div>{{ item1.title }}</div>
                <el-tag v-if="item1.tag" size="mini" :type="item1.tagType">{{ item1.tag }}</el-tag>
              </div>
              <div class="time" v-if="item1.desc">{{ item1.desc }}</div>
              <div class="time" v-if="item1.time">{{ item1.time }}</div>
            </div>
          </div>
          <div class="actions">
            <div
              class="a-item"
              :class="{ 'border': i !== actions.length }"
              v-for="(action, i) in actions"
              :key="i"
              @click="clickAction(action, i)"
            >
              <div class="a-icon" v-if="action.icon">
                <component :is="`el-icon-${toLine(action.icon)}`"></component>
              </div>
              <div class="a-text">{{ action.text }}</div>
            </div>
          </div>
        </el-scrollbar>
      </el-tab-pane>
    </el-tabs>
  </div>
</template>

<script lang='ts' setup>
import { PropType } from 'vue'
import { ListOptions, ActionOptions, ListItem } from './types'
import { toLine } from '../../../utils'
let props = defineProps({
  // 列表的内容
  list: {
    type: Array as PropType<ListOptions[]>,
    required: true
  },
  // 操作的内容
  actions: {
    type: Array as PropType<ActionOptions[]>,
    default: () => []
  }
})
let emits = defineEmits(['clickItem', 'clickAction'])

let clickItem = (item: ListItem, index: number) => {
  emits('clickItem', { item, index })
}
let clickAction = (item: ActionOptions, index: number) => {
  emits('clickAction', { item, index })
}

</script>

<style lang='scss' scoped>
.container {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  cursor: pointer;
  &:hover {
    background: #e6f6ff;
  }
  .avatar {
    flex: 1;
  }
  .content {
    flex: 3;
    .title {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .time {
      font-size: 12px;
      color: #999;
      margin-top: 4px;
    }
  }
}
.actions {
  height: 50px;
  display: flex;
  align-items: center;
  border-top: 1px solid #eee;
  .a-item {
    height: 50px;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    .a-icon {
      margin-right: 4px;
      position: relative;
      top: 2px;
    }
  }
}
.border {
  border-right: 1px solid #eee;
}
</style>

src/types.ts

// 列表的每一项
export interface ListItem {
  // 头像
  avatar?: string,
  // 标题
  title?: string,
  // 描述
  desc?: string,
  // 时间
  time?: string,
  // 标签内容
  tag?: string,
  tagType?: '' | 'success' | 'info' | 'warning' | 'danger'
}

// 列表
export interface ListOptions {
  title: string,
  content: ListItem[]
}

// 操作选项
export interface ActionOptions {
  text: string,
  icon?: string
}

在components/index.ts中注册

import { App } from 'vue'
import list from './list'

const components = [
 list
]

export default {
  install(app: App) {
    components.map(item => {
      app.use(item)
    })
  }
}

3.通知菜单

-- components/notification
	--src/index.vue
	--index.ts

src/index.vue

<template>
  <el-popover popper-class="notification-popper-class" placement="bottom" :width="300" trigger="click">
   
    <!-- 弹出层插槽 -->
    <template #default>
      <slot></slot>
    </template>
    <template #reference>
      <!-- 角标 -->
      <el-badge style="cursor: pointer;" :value="value" :max="max" :is-dot="isDot">
        <component :is="`el-icon-${toLine(icon)}`"></component>
      </el-badge>
    </template>
  </el-popover>
</template>

<script lang='ts' setup>
import { toLine } from '../../../utils'
let props = defineProps({
  // 显示的图标
  icon: {
    type: String,
    default: 'Bell'
  },
  // 通知数量
  value: {
    type: [String, Number],
    default: ''
  },
  // 最大值
  max: {
    type: Number
  },
  // 是否显示小圆点
  isDot: {
    type: Boolean,
    default: false
  },
})
</script>

<style lang='scss' scoped>
svg {
  width: 1.5em;
  height: 1.5em;
}
</style>

index.ts

import { App } from 'vue'
import notification from './src/index.vue'

// 让这个组件可以通过use的形式使用
export default {
  install(app: App) {
    app.component('m-notification', notification)
  }
}

在components/index.ts中注册

import { App } from 'vue'
import notification from './notification'

const components = [
 notification
]

export default {
  install(app: App) {
    components.map(item => {
      app.use(item)
    })
  }
}

4.list（列表） + notification（通知）的使用

--views/notification
	--index.vue
	--data.ts

data.ts

export const list = [
  {
    title: '通知',
    content: [
      {
        title: '蒂姆·库克回复了你的邮件',
        time: '2019-05-08 14:33:18',
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/ThXAXghbEsBCCSDihZxY.png'
      },
      {
        title: '乔纳森·伊夫邀请你参加会议',
        time: '2019-05-08 14:33:18',
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/OKJXDXrmkNshAMvwtvhu.png'
      },
      {
        title: '斯蒂夫·沃兹尼亚克已批准了你的休假申请',
        time: '2019-05-08 14:33:18',
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/kISTdvpyTAhtGxpovNWd.png'
      }

    ],
  },
  {
    title: '关注',
    content: [
      {
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/fcHMVNCjPOsbUGdEduuv.jpeg',
        title: '曲丽丽 评论了你',
        desc: '描述信息描述信息描述信息',
        time: '3小时前'
      },
      {
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/fcHMVNCjPOsbUGdEduuv.jpeg',
        title: '曲丽丽 评论了你',
        desc: '描述信息描述信息描述信息',
        time: '3小时前'
      },
      {
        avatar: 'https://gw.alipayobjects.com/zos/rmsportal/fcHMVNCjPOsbUGdEduuv.jpeg',
        title: '曲丽丽 评论了你',
        desc: '描述信息描述信息描述信息',
        time: '3小时前'
      }
    ]
  },
  {
    title: '代办',
    content: [
      {
        title: '任务名称',
        desc: '任务需要在 2017-01-12 20:00 前启动',
        tag: '未开始',
        tagType: ''
      },
      {
        title: '第三方紧急代码变更',
        desc: '冠霖提交于 2017-01-06，需在 2017-01-07 前完成代码变更任务',
        tag: '马上到期',
        tagType: 'danger'
      },
      {
        title: '信息安全考试',
        desc: '指派竹尔于 2017-01-09 前完成更新并发布',
        tag: '已耗时8天',
        tagType: 'warning'
      }
    ]
  },
]
export const actions = [
  {
    text: '清空代办',
    icon: 'delete'
  },
  {
    text: '查看更多',
    icon: 'edit'
  },
]

index.vue

<template>
  <div>
    <!-- <m-notification :value="50"></m-notification>
    <br />
    <br />
    <m-notification :value="50" :max="30"></m-notification>
    <br />
    <br />
    <m-notification :value="50" isDot></m-notification>
    <br />
    <br />
    <m-notification icon="ChatRound" :value="50"></m-notification>-->
    <m-notification :value="50">
      <template #default>
        <m-list @clickItem="clickItem" @clickAction="clickAction" :list="list" :actions="actions"></m-list>
      </template>
    </m-notification>
  </div>
</template>

<script lang='ts' setup>
import { list, actions } from './data'

let clickItem = (val: any) => {
  console.log(val)
}
let clickAction = (val: any) => {
  console.log(val)
}
</script>

<style lang='scss' scoped>
</style>

5.总结 ：

趋势标记组件
列表组件
通知菜单组件
通知菜单和列表组件联动
组件自定义属性