web-africa-h5/components/mpvue-citypicker/mpvueCityPicker.vue

<template>
  <div class="mpvue-picker">
    <div
      :class="{ pickerMask: showPicker }"
      @click="maskClick"
      catchtouchmove="true"
    ></div>
    <div
      class="mpvue-picker-content"
      :class="{ 'mpvue-picker-view-show': showPicker }"
    >
      <div class="mpvue-picker__hd" catchtouchmove="true">
        <div class="mpvue-picker__action" @click="pickerCancel">
          {{ $t("MN_F_31") }}
        </div>
        <div
          class="mpvue-picker__action"
          :style="{ color: themeColor }"
          @click="pickerConfirm"
        >
          {{ $t("MN_F_32") }}
        </div>
      </div>
      <picker-view
        indicator-style="height: 40px;"
        class="mpvue-picker-view"
        :value="pickerValue"
        @change="pickerChange"
      >
        <block>
          <picker-view-column>
            <div
              class="picker-item"
              v-for="(item, index) in provinceDataList"
              :key="index"
            >
              {{ item && item.name ? item.name : "" }}
            </div>
          </picker-view-column>
          <picker-view-column>
            <div
              class="picker-item"
              v-for="(item, index) in cityDataList"
              :key="index"
            >
              {{ item && item.name ? item.name : "" }}
            </div>
          </picker-view-column>
          <picker-view-column>
            <div
              class="picker-item"
              v-for="(item, index) in areaDataList"
              :key="index"
            >
              {{ item && item.name ? item.name : "" }}
            </div>
          </picker-view-column>
        </block>
      </picker-view>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      pickerValue: [0, 0, 0],
      provinceDataList: [],
      cityDataList: [],
      areaDataList: [],
      /* 是否显示控件 */
      showPicker: false,
      provinceData: [],
      cityData: [],
      areaData: [],
    };
  },
  created() {
    this.init();
  },
  props: {
    /* 默认值 */
    pickerValueDefault: {
      type: Array,
      default() {
        return [0, 0, 0];
      },
    },
    /* 主题色 */
    themeColor: String,
    province: {
      type: Array,
    },
    city: {
      type: Array,
    },
    area: {
      type: Array,
    },
  },
  watch: {
    pickerValueDefault() {
      this.init();
    },
  },
  methods: {
    init() {
      this.provinceData = this.province;
      this.cityData = this.city;
      this.areaData = this.area;
      this.handPickValueDefault(); // 对 pickerValueDefault 做兼容处理
      this.provinceDataList = this.provinceData;
      // 判断省份数据是否加载成功
      if (this.provinceDataList.length > 0) {
        this.cityDataList =
          this.provinceDataList[this.pickerValueDefault[0]].children || [];
        // 判断当前城市下是否有区域数据
        if (this.cityDataList.length > 0) {
          this.areaDataList = this.cityDataList[this.pickerValueDefault[1]]
            .children
            ? this.cityDataList[this.pickerValueDefault[1]].children
            : [];
        }
      }
      this.pickerValue = this.pickerValueDefault;
    },
    show() {
      setTimeout(() => {
        this.showPicker = true;
      }, 0);
    },
    maskClick() {
      //this.pickerCancel();
    },
    pickerCancel() {
      this.showPicker = false;
      this._$emit("onCancel");
    },
    pickerConfirm(e) {
      this.showPicker = false;
      this._$emit("onConfirm");
    },
    showPickerView() {
      this.showPicker = true;
    },
    handPickValueDefault() {
      console.log(this.cityDataList.length);
      if (this.pickerValueDefault !== [0, 0, 0]) {
        if (this.pickerValueDefault[0] > this.provinceData.length - 1) {
          this.pickerValueDefault[0] = this.provinceData.length - 1;
        }
        if (
          this.cityDataList.length > 0 &&
          this.pickerValueDefault[1] > this.cityDataList.length - 1
        ) {
          this.pickerValueDefault[1] = this.cityDataList.length - 1;
        }
        if (
          this.areaDataList &&
          this.areaDataList.length > 0 &&
          this.pickerValueDefault[2] > this.areaDataList.length - 1
        ) {
          this.pickerValueDefault[2] = this.areaDataList.length - 1;
        }
      }
    },
    pickerChange(e) {
      let changePickerValue = e.mp.detail.value;
      if (this.pickerValue[0] !== changePickerValue[0]) {
        // 第一级发生滚动
        this.cityDataList =
          this.provinceData[changePickerValue[0]].children || [];
        this.areaDataList =
          (this.cityDataList[0] && this.cityDataList[0].children) || [];
        changePickerValue[1] = this.cityDataList.length > 0 ? 0 : -1;
        changePickerValue[2] = this.areaDataList.length > 0 ? 0 : -1;
      } else if (this.pickerValue[1] !== changePickerValue[1]) {
        // 第二级滚动
        this.areaDataList =
          (this.cityDataList[changePickerValue[1]] &&
            this.cityDataList[changePickerValue[1]].children) ||
          [];
        changePickerValue[2] = this.areaDataList.length > 0 ? 0 : -1;
      }
      this.pickerValue = changePickerValue;
      this._$emit("onChange");
    },
    _$emit(emitName) {
      let pickObj = {
        label: this._getLabel(),
        value: this.pickerValue,
        cityCode: this._getCityCode(),
      };
      this.$emit(emitName, pickObj);
    },
    _getLabel() {
      let pcikerLabel = "";
      if (
        this.provinceDataList[this.pickerValue[0]] &&
        this.provinceDataList[this.pickerValue[0]].name
      ) {
        pcikerLabel += this.provinceDataList[this.pickerValue[0]].name;
      }
      if (
        this.cityDataList[this.pickerValue[1]] &&
        this.cityDataList[this.pickerValue[1]].name
      ) {
        pcikerLabel += this.cityDataList[this.pickerValue[1]].name;
      }
      if (
        this.areaDataList[this.pickerValue[2]] &&
        this.areaDataList[this.pickerValue[2]].name
      ) {
        pcikerLabel += this.areaDataList[this.pickerValue[2]].name;
      }
      return pcikerLabel;
    },
    _getCityCode() {
      let pcikerCode = [0, 0, 0];
      if (
        this.provinceDataList[this.pickerValue[0]] &&
        this.provinceDataList[this.pickerValue[0]].id
      ) {
        pcikerCode[0] = this.provinceDataList[this.pickerValue[0]].id;
      }
      if (
        this.cityDataList[this.pickerValue[1]] &&
        this.cityDataList[this.pickerValue[1]].id
      ) {
        pcikerCode[1] = this.cityDataList[this.pickerValue[1]].id;
      }
      if (
        this.areaDataList[this.pickerValue[2]] &&
        this.areaDataList[this.pickerValue[2]].id
      ) {
        pcikerCode[2] = this.areaDataList[this.pickerValue[2]].id;
      } else {
        pcikerCode[2] = 0;
      }
      return pcikerCode;
    },
  },
};
</script>

<style>
.pickerMask {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
}

.mpvue-picker-content {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  transition: all 0.3s ease;
  transform: translateY(100%);
  z-index: 3000;
}

.mpvue-picker-view-show {
  transform: translateY(0);
}

.mpvue-picker__hd {
  display: flex;
  padding: 9px 15px;
  background-color: #fff;
  position: relative;
  text-align: center;
  font-size: 17px;
}

.mpvue-picker__hd:after {
  content: " ";
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1px solid #e5e5e5;
  color: #e5e5e5;
  transform-origin: 0 100%;
  transform: scaleY(0.5);
}

.mpvue-picker__action {
  display: block;
  flex: 1;
  color: #fb3024;
}

.mpvue-picker__action:first-child {
  text-align: left;
  color: #888;
}

.mpvue-picker__action:last-child {
  text-align: right;
}

.picker-item {
  text-align: center;
  line-height: 40px;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
}

.mpvue-picker-view {
  position: relative;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 238px;
  background-color: rgba(255, 255, 255, 1);
}
</style>