uni-Identify-quality/components/yixuan-selectAddress/yixuan-selectAddress.vue

<template>
  <view class="wrapper"
        v-show="isShowMask">
    <transition name="content">
      <view class="content_view"
            v-show="isShow">
        <view class="title_view">
          <view class="title">请选择所在地区</view>
          <view class="close_view"
                @click="hidden">
            <icon class="close_icon"
                  :type="'clear'"
                  size="26" />
          </view>
        </view>
        <view class="select_top">
          <view class="select_top_item"
                ref="select_top_item"
                v-for="(item, index) in dataList"
                :key="index"
                @click="select_top_item_click(index)">
            <text class="address_value">{{ item }}</text>
          </view>
          <view class="indicator"
                :style="{ left: indicatorStyleLeft + 'px' }"
                ref="indicator"></view>
        </view>
        <swiper class="swiper"
                :current="currentIndex"
                @change="swiperChange">
          <swiper-item v-for="(swiper_item, swiper_index) in dataList"
                       :key="swiper_index">
            <view class="swiper-item">
              <scroll-view class="scroll-view-item"
                           scroll-y="true">
                <view class="address_item"
                      v-for="(item, index) in cityAreaArray[swiper_index]"
                      :key="index"
                      @click="address_item_click(swiper_index, index)">
                  <image v-if="selectIndexArr[swiper_index] === index"
                         class="address_item_icon"
                         src="../../static/yixuan-selectAddress/gou.png"
                         mode=""></image>
                  {{ item.name }}
                </view>
              </scroll-view>
            </view>
          </swiper-item>
        </swiper>
      </view>
    </transition>
    <view class="mask"
          @click="hidden"
          v-show="isShowMask"></view>
  </view>
</template>

<script>
import cityData from "../../static/yixuan-selectAddress/city.json";
export default {
  props: {
    limit: {
      type: String,
    },
  },
  data () {
    return {
      isShow: false,
      isShowMask: false,
      dataList: ["请选择"],
      currentIndex: 0,
      cityData: {},
      cityAreaArray: [],
      selectIndexArr: [],
      indicatorStyleLeft: 16,
    };
  },
  methods: {
    show () {
      this.isShow = true;
      this.isShowMask = true;
    },
    hidden () {
      this.isShow = false;
      setTimeout(() => {
        this.isShowMask = false;
      }, 500);
    },
    select_top_item_click (index) {
      console.log("select_top_item_click");
      this.currentIndex = index;
      this.$nextTick(() => {
        this.changeIndicator(index);
      });
    },
    swiperChange (event) {
      let index = event.detail.current;
      this.currentIndex = index;

      this.changeIndicator(index);
    },
    changeIndicator (index) {
      /*
        let itemWidth = this.$refs.select_top_item[index].$children[0].$el.offsetWidth
        if (itemWidth > 80){
          itemWidth = 80
        }
        let itemCenterX = 10 + index * 80 + itemWidth / 2
        let indicatorWidth = this.$refs.indicator.$el.offsetWidth
        this.$refs.indicator.$el.style.left = itemCenterX - indicatorWidth / 2 + 'px'
        */
      let indicatorWidth = 30;
      const query = uni.createSelectorQuery().in(this);
      let arr = query.selectAll(".select_top_item .address_value");
      arr
        .fields(
          {
            size: true,
            scrollOffset: false,
          },
          (data) => {
            let itemWidth =
              data[index]["width"] > 80 ? 70 : data[index]["width"];
            let itemCenterX = 10 + index * 80 + itemWidth / 2;
            let left = itemCenterX - indicatorWidth / 2;

            this.indicatorStyleLeft = left;
          }
        )
        .exec();
    },
    address_item_click (swiper_index, index) {
      // console.log(swiper_index,index)
      this.selectIndexArr.splice(swiper_index, 5, index);

      //判断当前是否为最下一级
      if (swiper_index === 0) {
        //第一级

        let currentObj = this.cityData[index];
        let city = currentObj.name;
        this.dataList.splice(swiper_index, 5, city);
        this.dataList.splice(swiper_index + 1, 0, "请选择");
        this.cityAreaArray.splice(swiper_index + 1, 1, currentObj["city"]);
        setTimeout(() => {
          this.currentIndex = 1;
          this.changeIndicator(1);
        }, 50);
      } else {
        let currentAreaArray = this.cityAreaArray[swiper_index];
        let currentObj = currentAreaArray[index];
        let area = currentObj["area"];
        if (this.limit === 'city') {
          area = undefined
        }
        if (area !== undefined) {
          let city = currentObj.name;

          this.dataList.splice(swiper_index, 5, city);
          this.dataList.splice(swiper_index + 1, 0, "请选择");
          this.cityAreaArray.splice(swiper_index + 1, 1, currentObj["area"]);

          setTimeout(() => {
            this.currentIndex = swiper_index + 1;
            this.changeIndicator(swiper_index + 1);
          }, 50);
        } else {
          //是最下一级

          let city = currentObj.name;
          this.dataList.splice(swiper_index, 1, city);

          //选择成功返回数据
          this.$emit("selectAddress", this.dataList);
          console.log("", this.dataList);

          this.$nextTick(() => {
            this.changeIndicator(swiper_index);
          });

          setTimeout(() => {
            this.isShow = false;
          }, 100);
          setTimeout(() => {
            this.isShowMask = false;
          }, 500);
        }
      }
    },
  },
  created () {
    this.cityData = cityData;
    this.cityAreaArray.push(cityData);
  },
  mounted () {
    // this.changeIndicator(0)
  },
};
</script>

<style lang="scss">
// 不换行
@mixin no-wrap() {
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}
.wrapper {
  z-index: 1999;
  position: absolute;
  top: -44px;
  left: 0;
  bottom: 0;
  right: 0;
  .content_view {
    z-index: 999;
    background: white;
    position: absolute;
    height: 80%;
    left: 0;
    bottom: 0;
    right: 0;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    .title_view {
      height: 12%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0 $uni-spacing-row-sm;
      .title {
        font-size: uni-font-size-sm;
      }
      .close_view {
        height: 60px;
        width: 60px;
        display: flex;
        justify-content: center;
        align-items: center;
      }
    }
    .select_top {
      height: 8%;
      display: flex;
      justify-content: start;
      align-items: center;
      padding: 10px;
      position: relative;
      box-sizing: border-box;
      .select_top_item {
        width: 80px;
        font-size: 14px;
        @include no-wrap();
      }
      .indicator {
        position: absolute;
        width: 30px;
        height: 2px;
        background: $uni-color-error;
        left: 16px;
        bottom: 0;
        transition: left 0.5s ease;
      }
    }
    .swiper {
      height: 80%;
      position: relative;
      left: 0;
      top: 0;
      bottom: 0;
      right: 0;
      .swiper-item {
        height: 100%;
        .scroll-view-item {
          height: 100%;
          padding: 0 10px;
          .address_item {
            padding: 5px 0;
            font-size: 14px;
            display: flex;
            align-items: center;
            .address_item_icon {
              width: 20px;
              height: 20px;
              margin-right: 10px;
            }
          }
        }
      }
    }
  }
  .mask {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: $uni-text-color-grey;
    opacity: 0.7;
  }
}

.content-enter {
  transform: translateY(100%);
}
.content-enter-to {
  transform: translateY(0%);
}
.content-enter-active {
  transition: transform 0.5s;
}
.content-leave {
  transform: translateY(0%);
}
.content-leave-to {
  transform: translateY(100%);
}
.content-leave-active {
  transition: transform 0.5s;
}
</style>