1/uni_modules/uview-ui/components/u-dropdown-item/u-dropdown-item.vue

<template>
  <view class="u-drawdown">
    <view
      class="u-dropdown__menu"
      :style="{
				height: $u.addUnit(height)
			}"
      ref="u-dropdown__menu"
    >
      <view
        class="u-dropdown__menu__item"
        v-for="(item, index) in menuList"
        :key="index"
        @tap.stop="clickHandler(item, index)"
      >
        <view class="u-dropdown__menu__item__content">
          <text
            class="u-dropdown__menu__item__content__text"
            :style="[index === current ? activeStyle : inactiveStyle]"
          >{{item.title}}</text>
          <view
            class="u-dropdown__menu__item__content__arrow"
            :class="[index === current && 'u-dropdown__menu__item__content__arrow--rotate']"
          >
            <u-icon
              :name="menuIcon"
              :size="$u.addUnit(menuIconSize)"
            ></u-icon>
          </view>
        </view>
      </view>
    </view>
    <view class="u-dropdown__content">
      <slot />
    </view>
  </view>
</template>

<script>
import props from './props.js';
/**
 * Dropdown
 * @description
 * @tutorial url
 * @property {String}
 * @event {Function}
 * @example
 */
export default {
  name: 'u-dropdown',
  mixins: [uni.$u.mixin, props],
  data() {
    return {
      // <20>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD>
      menuList: [],
      current: 0
    }
  },
  computed: {
  
  },
  created() {
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(u-dropdown-item)<29><>this<69><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>data<74><61><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><CEA2>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD><C3B6><EFBFBD><EFBFBD><EFBFBD>
    this.children = [];
  },
  methods: {
    clickHandler(item, index) {
      this.children.map(child => {
        if(child.title === item.title) {
          // this.queryRect('u-dropdown__menu').then(size => {
          child.$emit('click')
          child.setContentAnimate(child.show ? 0 : 300)
          child.show = !child.show
          // })
        } else {
          child.show = false
          child.setContentAnimate(0)
        }
      })
    },
    // <20><>ȡ<EFBFBD><C8A1>ǩ<EFBFBD>ijߴ<C4B3>λ<EFBFBD><CEBB>
    queryRect(el) {
      // #ifndef APP-NVUE
      // $uGetRectΪuView<65>Դ<EFBFBD><D4B4>Ľڵ<C4BD><DAB5>ѯ<EFBFBD>򻯷<EFBFBD><F2BBAFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD>ܣ<EFBFBD>https://www.uviewui.com/js/getRect.html
      // <20><><EFBFBD><EFBFBD>ڲ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>this.$uGetRect<63><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊthis.$u.getRect<63><74><EFBFBD><EFBFBD><EFBFBD>߹<EFBFBD><DFB9><EFBFBD>һ<EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD>Ʋ<EFBFBD>ͬ
      return new Promise(resolve => {
        this.$uGetRect(`.${el}`).then(size => {
          resolve(size)
        })
      })
      // #endif
      
      // #ifdef APP-NVUE
      // nvue<75>£<EFBFBD>ʹ<EFBFBD><CAB9>domģ<6D><C4A3><EFBFBD>ѯԪ<D1AF>ظ߶<D8B8>
      // <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>promise<73><65><EFBFBD>õ<EFBFBD><C3B5>ô˷<C3B4><CBB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>then<65>ص<EFBFBD>
      return new Promise(resolve => {
        dom.getComponentRect(this.$refs[el], res => {
          resolve(res.size)
        })
      })
      // #endif
    },
  },
}
</script>

<style lang="scss">
@import '../../libs/css/components.scss';

.u-dropdown {
  
  &__menu {
    @include flex;
    
    &__item {
      flex: 1;
      @include flex;
      justify-content: center;
      
      &__content {
        @include flex;
        align-items: center;
      }
    }
  }
}
</style>