const { tabForPage, paths } = require('../../utils/navigation');
Component({
  data: { active: '' },
  lifetimes: { attached: function() { this.syncActive(); } },
  pageLifetimes: { show: function() { this.syncActive(); } },
  methods: {
  syncActive: function() {
    var pages = getCurrentPages();
    var current = pages[pages.length - 1];
    this.setData({ active: tabForPage(current && current.route) });
  },
  navigate: function(e) {
    var tab = e.currentTarget.dataset.tab;
    if (!paths[tab]) return;
    var pages = getCurrentPages();
    // 当前主页面重复点击不重新加载。
    if (pages.length && pages[pages.length - 1].route === paths[tab]) return;
    wx.reLaunch({ url: '/' + paths[tab] });
  }
} });