// components/segment/index.js
Component({
  /**
   * 组件的属性列表
   */
  properties: {
    headerTitles: Array,
    defaultSelectIndex: {
      type: Number,
      value: 0,
      observer (newVal, oldVal) {
        if (newVal != oldVal) {
          this.setData({
            selectedTitle: newVal
          })
        }
      }
    },
  },

  /**
   * 组件的初始数据
   */
  data: {
    selectedTitle: 0
  },

  /**
   * 组件的方法列表
   */
  methods: {
    bindtap: function (e) {
      const item = e.currentTarget.dataset
      this.setData({
        selectedTitle: item.item
      })
      this.triggerEvent('tapSegment', item)
    },
  }
})