bmfe-mobile-template/template/src/js/components/vonic/services/tabbar/index.js

BM 移动端模板

import assign from 'lodash/assign'
import Tabbar from './Tabbar'
import channel from './channel'

const createElement = (marker, tag) => {
  let el = document.createElement(tag || 'div')
  el.setAttribute(marker, '')

  let vonModalClickBlock = document.querySelector('[von-modal-click-block]')
  vonModalClickBlock
    ? document.body.insertBefore(el, vonModalClickBlock)
    : document.body.appendChild(el)
}

let _vm = undefined;

Vue.directive('tabbar', {
  inserted: function (el, binding) {
    setTimeout(() => {
      let props = {}
      let data = binding.value
      if (data.menuColor) props.menuColor = data.menuColor
      if (data.activeMenuColor) props.activeMenuColor = data.activeMenuColor
      if (data.onMenuClick) props.onMenuClick = data.onMenuClick

      createElement('von-tabbar')
      _vm = new Vue(assign({}, Tabbar, {
        data: {
          menus: data.menus,
          menuIndex: 0,
          state: 0
        },
        propsData: props
      })).$mount('[von-tabbar]')
    })
  }
})

function vmReady() {
  let cnt = 0;
  return new Promise((resolve, reject) => {
    let timer = setInterval(() => {
      if (cnt > 100) {
        reject('Tabbar _vm undefined.')
        return
      }
      cnt++
      if (_vm) {
        clearInterval(timer)
        resolve()
      }
    }, 10)
  })
}

Vue.directive('tabbar-menu-index', {
  inserted: function (el, binding) {
    vmReady().then(() => {
      _vm.activate(binding.value)
    })
  }
})

channel.$on('hideTabbar', () => {
  if (_vm) {
    _vm.$destroy()
    document.body.removeChild(_vm.$el)
  }
})

channel.$on('updateTabbarBadge', (menuIndex, num) => {
  if (_vm) {
    _vm.setBadgeNum(menuIndex, num)
  }
})

window.$tabbar = window.$tabbarEmmiter = channel