// component/switchtab/switchtab.js
Component({
  options: {
    addGlobalClass: true,
    multipleSlots: true
  },
  /**
   * 组件的属性列表
   */
  properties: {
    tabList: {
      type: Array,
      value: []
    },
    pageList: {
      type: Array,
      value: []
    },
  },

  /**
   * 组件的初始数据
   */
  data: {
    //选项卡相关
    currentTab: 0,
    // pageheight: '600px',
  },

  observers: {
    'pageList': function() {
      this.tabsHeight('.page0');
    }
  },

  /**
   * 组件的方法列表
   */
  methods: {
    //计算swiper高度方法（在切换的时候调用）
    tabsHeight(element) {
      let that = this;
      let query = this.createSelectorQuery(); //必须要先创建一个查询
      query.select(element).boundingClientRect(function (rect) {
        if (that.data.pageheight) {
          let pageheight = that.data.pageheight.split('px')[0]
          pageheight = parseInt(pageheight)
          if (rect.height > pageheight) {
            that.setData({
              pageheight: rect.height + 'px'
            });
          }
        } else {
          that.setData({
            pageheight: rect.height + 'px'
          });
        }
      }).exec();
    },
    swichNav: function (e) {
      var that = this;
      if (this.data.currentTab === e.target.dataset.current) {
        return false;
      } else {
        that.setData({
          currentTab: e.target.dataset.current,
          navScrollLeft: e.target.dataset.current >= 3 ? ((e.target.dataset.current) * 60) : 0 //判断当前选中的个数是否是第5个
        })
        // that.tabsHeight('.page' + e.target.dataset.current); //查询哪一个元素
      }
    },
    bindChange: function (e) {
      var that = this;
      that.setData({
        currentTab: e.detail.current,
        navScrollLeft: e.detail.current >= 3 ? ((e.detail.current) * 60) : 0 //判断当前选中的个数是否是第5个
      });
      that.tabsHeight('.page' + e.detail.current); //查询哪一个元素        
    },
  }
})