hezhiying/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 {
      // <EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
      menuList: [],
      current: 0
    }
  },
  computed: {
  
  },
  created() {
    // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(u-dropdown-item)<EFBFBD><EFBFBD>this<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>data<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD><EFBFBD><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)
        }
      })
    },
    // <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>ǩ<EFBFBD>ijߴ<EFBFBD>λ<EFBFBD><EFBFBD>
    queryRect(el) {
      // #ifndef APP-NVUE
      // $uGetRectΪuView<EFBFBD>Դ<EFBFBD><EFBFBD>Ľڵ<EFBFBD><EFBFBD>ѯ<EFBFBD>򻯷<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD>https://www.uviewui.com/js/getRect.html
      // <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>this.$uGetRect<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊthis.$u.getRect<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߹<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>£<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʋ<EFBFBD>ͬ
      return new Promise(resolve => {
        this.$uGetRect(`.${el}`).then(size => {
          resolve(size)
        })
      })
      // #endif
      
      // #ifdef APP-NVUE
      // nvue<EFBFBD>£<EFBFBD>ʹ<EFBFBD><EFBFBD>domģ<EFBFBD><EFBFBD><EFBFBD>ѯԪ<EFBFBD>ظ߶<EFBFBD>
      // <EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>promise<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD>ô˷<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>then<EFBFBD>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>