wwbsr/wxcomponents/vant/dropdown-item/index.vue

<template>
<uni-shadow-root class="vant-dropdown-item-index"><view v-if="showWrapper" :class="utils.bem('dropdown-item', direction)" :style="wrapperStyle">
  <van-popup :show="showPopup" :custom-style="'position: absolute;'+(popupStyle)" overlay-style="position: absolute;" :overlay="overlay" :position="direction === 'down' ? 'top' : 'bottom'" :duration="transition ? duration : 0" :close-on-click-overlay="closeOnClickOverlay" @enter="onOpen" @leave="onClose" @close="toggle" @after-enter="onOpened" @after-leave="onClosed">
    <van-cell v-for="(item,index) in (options)" :key="item.value" :data-option="item" :class="utils.bem('dropdown-item__option', { active: item.value === value } )" clickable :icon="item.icon" @click.native="onOptionTap">
      <view slot="title" class="van-dropdown-item__title" :style="item.value === value  ? 'color:' + activeColor : ''">
        {{ item.text }}
      </view>
      <van-icon v-if="item.value === value" name="success" class="van-dropdown-item__icon" :color="activeColor"></van-icon>
    </van-cell>

    <slot></slot>
  </van-popup>
</view></uni-shadow-root>
</template>
<wxs src="../wxs/utils.wxs" module="utils"></wxs>
<script>
import VanPopup from '../popup/index.vue'
import VanCell from '../cell/index.vue'
import VanIcon from '../icon/index.vue'
global['__wxVueOptions'] = {components:{'van-popup': VanPopup,'van-cell': VanCell,'van-icon': VanIcon}}

global['__wxRoute'] = 'vant/dropdown-item/index'
import { VantComponent } from '../common/component';
VantComponent({
  field: true,
  relation: {
    name: 'dropdown-menu',
    type: 'ancestor',
    current: 'dropdown-item',
    linked() {
      this.updateDataFromParent();
    },
  },
  props: {
    value: {
      type: null,
      observer: 'rerender',
    },
    title: {
      type: String,
      observer: 'rerender',
    },
    disabled: Boolean,
    titleClass: {
      type: String,
      observer: 'rerender',
    },
    options: {
      type: Array,
      value: [],
      observer: 'rerender',
    },
    popupStyle: String,
  },
  data: {
    transition: true,
    showPopup: false,
    showWrapper: false,
    displayTitle: '',
  },
  methods: {
    rerender() {
      wx.nextTick(() => {
        this.parent && this.parent.updateItemListData();
      });
    },
    updateDataFromParent() {
      if (this.parent) {
        const {
          overlay,
          duration,
          activeColor,
          closeOnClickOverlay,
          direction,
        } = this.parent.data;
        this.setData({
          overlay,
          duration,
          activeColor,
          closeOnClickOverlay,
          direction,
        });
      }
    },
    onOpen() {
      this.$emit('open');
    },
    onOpened() {
      this.$emit('opened');
    },
    onClose() {
      this.$emit('close');
    },
    onClosed() {
      this.$emit('closed');
      this.setData({ showWrapper: false });
    },
    onOptionTap(event) {
      const { option } = event.currentTarget.dataset;
      const { value } = option;
      const shouldEmitChange = this.data.value !== value;
      this.setData({ showPopup: false, value });
      this.$emit('close');
      this.rerender();
      if (shouldEmitChange) {
        this.$emit('change', value);
      }
    },
    toggle(show, options = {}) {
      const { showPopup } = this.data;
      if (typeof show !== 'boolean') {
        show = !showPopup;
      }
      if (show === showPopup) {
        return;
      }
      this.setData({
        transition: !options.immediate,
        showPopup: show,
      });
      if (show) {
        this.parent.getChildWrapperStyle().then((wrapperStyle) => {
          this.setData({ wrapperStyle, showWrapper: true });
          this.rerender();
        });
      } else {
        this.rerender();
      }
    },
  },
});
export default global['__wxComponents']['vant/dropdown-item/index']
</script>
<style platform="mp-weixin">
@import '../common/index.css';.van-dropdown-item{position:fixed;right:0;left:0;overflow:hidden}.van-dropdown-item__option{text-align:left}.van-dropdown-item__option--active .van-dropdown-item__icon,.van-dropdown-item__option--active .van-dropdown-item__title{color:#1989fa;color:var(--dropdown-menu-option-active-color,#1989fa)}.van-dropdown-item--up{top:0}.van-dropdown-item--down{bottom:0}.van-dropdown-item__icon{display:block;line-height:inherit}
</style>