mabao/unpackage/dist/dev/mp-weixin/uview-ui/components/u-select/u-select.js

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/***/ 284:
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Object.defineProperty(exports, "__esModule", { value: true });exports.default = void 0; //
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/**
 * select 列选择器
 * @description 此选择器用于单列，多列，多列联动的选择场景。(从1.3.0版本起，不建议使用Picker组件的单列和多列模式，Select组件是专门为列选择而构造的组件，更简单易用。)
 * @tutorial http://uviewui.com/components/select.html
 * @property {String} mode 模式选择，"single-column"-单列模式，"mutil-column"-多列模式，"mutil-column-auto"-多列联动模式
 * @property {Array} list 列数据，数组形式，见官网说明
 * @property {Boolean} v-model 布尔值变量，用于控制选择器的弹出与收起
 * @property {Boolean} safe-area-inset-bottom 是否开启底部安全区适配(默认false)
 * @property {String} cancel-color 取消按钮的颜色（默认#606266）
 * @property {String} confirm-color 确认按钮的颜色(默认#2979ff)
 * @property {String} confirm-text 确认按钮的文字
 * @property {String} cancel-text 取消按钮的文字
 * @property {String} default-value 提供的默认选中的下标，见官网说明
 * @property {Boolean} mask-close-able 是否允许通过点击遮罩关闭Picker(默认true)
 * @property {String Number} z-index 弹出时的z-index值(默认10075)
 * @property {String} value-name 自定义list数据的value属性名 1.3.6
 * @property {String} label-name 自定义list数据的label属性名 1.3.6
 * @property {String} child-name 自定义list数据的children属性名，只对多列联动模式有效 1.3.7
 * @event {Function} confirm 点击确定按钮，返回当前选择的值
 * @example <u-select v-model="show" :list="list"></u-select>
 */var _default2 =

{
  props: {
    // 列数据
    list: {
      type: Array,
      default: function _default() {
        return [];
      } },

    // 是否显示边框
    border: {
      type: Boolean,
      default: true },

    // 通过双向绑定控制组件的弹出与收起
    value: {
      type: Boolean,
      default: false },

    // "取消"按钮的颜色
    cancelColor: {
      type: String,
      default: '#606266' },

    // "确定"按钮的颜色
    confirmColor: {
      type: String,
      default: '#2979ff' },

    // 弹出的z-index值
    zIndex: {
      type: [String, Number],
      default: 0 },

    safeAreaInsetBottom: {
      type: Boolean,
      default: false },

    // 是否允许通过点击遮罩关闭Picker
    maskCloseAble: {
      type: Boolean,
      default: true },

    // 提供的默认选中的下标
    defaultValue: {
      type: Array,
      default: function _default() {
        return [0];
      } },

    // 模式选择，single-column-单列，mutil-column-多列，mutil-column-auto-多列联动
    mode: {
      type: String,
      default: 'single-column' },

    // 自定义value属性名
    valueName: {
      type: String,
      default: 'value' },

    // 自定义label属性名
    labelName: {
      type: String,
      default: 'label' },

    // 自定义多列联动模式的children属性名
    childName: {
      type: String,
      default: 'children' },

    // 顶部标题
    title: {
      type: String,
      default: '' },

    // 取消按钮的文字
    cancelText: {
      type: String,
      default: '取消' },

    // 确认按钮的文字
    confirmText: {
      type: String,
      default: '确认' } },


  data: function data() {
    return {
      // 用于列改变时，保存当前的索引，下一次变化时比较得出是哪一列发生了变化
      defaultSelector: [0],
      // picker-view的数据
      columnData: [],
      // 每次队列发生变化时，保存选择的结果
      selectValue: [],
      // 上一次列变化时的index
      lastSelectIndex: [],
      // 列数
      columnNum: 0,
      // 列是否还在滑动中，微信小程序如果在滑动中就点确定，结果可能不准确
      moving: false };

  },
  watch: {
    // 在select弹起的时候，重新初始化所有数据
    value: {
      immediate: true,
      handler: function handler(val) {var _this = this;
        if (val) setTimeout(function () {return _this.init();}, 10);
      } } },


  computed: {
    uZIndex: function uZIndex() {
      // 如果用户有传递z-index值，优先使用
      return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
    } },

  methods: {
    // 标识滑动开始，只有微信小程序才有这样的事件
    pickstart: function pickstart() {

      this.moving = true;

    },
    // 标识滑动结束
    pickend: function pickend() {

      this.moving = false;

    },
    init: function init() {
      this.setColumnNum();
      this.setDefaultSelector();
      this.setColumnData();
      this.setSelectValue();
    },
    // 获取默认选中列下标
    setDefaultSelector: function setDefaultSelector() {
      // 如果没有传入默认选中的值，生成长度为columnNum，用0填充的数组
      this.defaultSelector = this.defaultValue.length == this.columnNum ? this.defaultValue : Array(this.columnNum).fill(0);
      this.lastSelectIndex = this.$u.deepClone(this.defaultSelector);
    },
    // 计算列数
    setColumnNum: function setColumnNum() {
      // 单列的列数为1
      if (this.mode == 'single-column') this.columnNum = 1;
      // 多列时，this.list数组长度就是列数
      else if (this.mode == 'mutil-column') this.columnNum = this.list.length;
        // 多列联动时，通过历遍this.list的第一个元素，得出有多少列
        else if (this.mode == 'mutil-column-auto') {
            var num = 1;
            var column = this.list;
            // 只要有元素并且第一个元素有children属性，继续历遍
            while (column[0][this.childName]) {
              column = column[0] ? column[0][this.childName] : {};
              num++;
            }
            this.columnNum = num;
          }
    },
    // 获取需要展示在picker中的列数据
    setColumnData: function setColumnData() {
      var data = [];
      this.selectValue = [];
      if (this.mode == 'mutil-column-auto') {
        // 获得所有数据中的第一个元素
        var column = this.list[this.defaultSelector.length ? this.defaultSelector[0] : 0];
        // 通过循环所有的列数，再根据设定列的数组，得出当前需要渲染的整个列数组
        for (var i = 0; i < this.columnNum; i++) {
          // 第一列默认为整个list数组
          if (i == 0) {
            data[i] = this.list;
            column = column[this.childName];
          } else {
            // 大于第一列时，判断是否有默认选中的，如果没有就用该列的第一项
            data[i] = column;
            column = column[this.defaultSelector[i]][this.childName];
          }
        }
      } else if (this.mode == 'single-column') {
        data[0] = this.list;
      } else {
        data = this.list;
      }
      this.columnData = data;
    },
    // 获取默认选中的值，如果没有设置defaultValue，就默认选中每列的第一个
    setSelectValue: function setSelectValue() {
      var tmp = null;
      for (var i = 0; i < this.columnNum; i++) {
        tmp = this.columnData[i][this.defaultSelector[i]];
        var data = {
          value: tmp ? tmp[this.valueName] : null,
          label: tmp ? tmp[this.labelName] : null };

        // 判断是否存在额外的参数，如果存在，就返回
        if (tmp && tmp.extra) data.extra = tmp.extra;
        this.selectValue.push(data);
      }
    },
    // 列选项
    columnChange: function columnChange(e) {var _this2 = this;
      var index = null;
      var columnIndex = e.detail.value;
      // 由于后面是需要push进数组的，所以需要先清空数组
      this.selectValue = [];
      if (this.mode == 'mutil-column-auto') {
        // 对比前后两个数组，寻找变更的是哪一列，如果某一个元素不同，即可判定该列发生了变化
        this.lastSelectIndex.map(function (val, idx) {
          if (val != columnIndex[idx]) index = idx;
        });
        this.defaultSelector = columnIndex;
        for (var i = index + 1; i < this.columnNum; i++) {
          // 当前变化列的下一列的数据，需要获取上一列的数据，同时需要指定是上一列的第几个的children，再往后的
          // 默认是队列的第一个为默认选项
          this.columnData[i] = this.columnData[i - 1][i - 1 == index ? columnIndex[index] : 0][this.childName];
          // 改变的列之后的所有列，默认选中第一个
          this.defaultSelector[i] = 0;
        }
        // 在历遍的过程中，可能由于上一步修改this.columnData，导致产生连锁反应，程序触发columnChange，会有多次调用
        // 只有在最后一次数据稳定后的结果是正确的，此前的历遍中，可能会产生undefined，故需要判断
        columnIndex.map(function (item, index) {
          var data = _this2.columnData[index][columnIndex[index]];
          var tmp = {
            value: data ? data[_this2.valueName] : null,
            label: data ? data[_this2.labelName] : null };

          // 判断是否有需要额外携带的参数
          if (data && data.extra !== undefined) tmp.extra = data.extra;
          _this2.selectValue.push(tmp);

        });
        // 保存这一次的结果，用于下次列发生变化时作比较
        this.lastSelectIndex = columnIndex;
      } else if (this.mode == 'single-column') {
        var data = this.columnData[0][columnIndex[0]];
        // 初始默认选中值
        var tmp = {
          value: data ? data[this.valueName] : null,
          label: data ? data[this.labelName] : null };

        // 判断是否有需要额外携带的参数
        if (data && data.extra !== undefined) tmp.extra = data.extra;
        this.selectValue.push(tmp);
      } else if (this.mode == 'mutil-column') {
        // 初始默认选中值
        columnIndex.map(function (item, index) {
          var data = _this2.columnData[index][columnIndex[index]];
          // 初始默认选中值
          var tmp = {
            value: data ? data[_this2.valueName] : null,
            label: data ? data[_this2.labelName] : null };

          // 判断是否有需要额外携带的参数
          if (data && data.extra !== undefined) tmp.extra = data.extra;
          _this2.selectValue.push(tmp);
        });
      }
    },
    close: function close() {
      this.$emit('input', false);
    },
    // 点击确定或者取消
    getResult: function getResult() {var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;

      if (this.moving) return;

      if (event) this.$emit(event, this.selectValue);
      this.close();
    },
    selectHandler: function selectHandler() {
      this.$emit('click');
    } } };exports.default = _default2;

/***/ }),

/***/ 286:
/*!****************************************************************************************************************************************!*\
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/***/ (function(module, __webpack_exports__, __webpack_require__) {

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