import { addResizeListener, removeResizeListener } from 'element-ui/src/utils/resize-event'

 // 設(shè)置表格高度
 const doResize = async(el, binding, vnode) => {
 // 獲取表格Dom對(duì)象
 const { componentInstance: $table } = await vnode
 // 獲取調(diào)用傳遞過(guò)來(lái)的數(shù)據(jù) 
 const { value } = binding

 if (!$table.height) {
  throw new Error(`el-$table must set the height. Such as height='100px'`)
 }
 // 獲取距底部距離（用于展示頁(yè)碼等信息）
 const bottomOffset = (value && value.bottomOffset) || 30

 if (!$table) return

 // 計(jì)算列表高度并設(shè)置
 const height = window.innerHeight - el.getBoundingClientRect().top - bottomOffset
 $table.layout.setHeight(height)
 $table.doLayout()
}

export default {  
  // 初始化設(shè)置
  bind(el, binding, vnode) { 
    // 設(shè)置resize監(jiān)聽(tīng)方法
    el.resizeListener = async() => { 
      await doResize(el, binding, vnode)
    }    
    // 綁定監(jiān)聽(tīng)方法到addResizeListener
    addResizeListener(window.document.body, el.resizeListener)  
  },  
  // 綁定默認(rèn)高度
  async inserted(el, binding, vnode) { 
    await doResize(el, binding, vnode)  
  },  
  // 銷毀時(shí)設(shè)置
  unbind(el) { 
    // 移除resize監(jiān)聽(tīng)
    removeResizeListener(el, el.resizeListener)  
  }
}

import adaptive from './adaptive'

const install = function(Vue) {   
  // 綁定v-adaptive指令
  Vue.directive('adaptive', adaptive)
}

if (window.Vue) {
  window['adaptive'] = adaptive  
  // eslint-disable-next-line no-undef 
  Vue.use(install)
}

adaptive.install = install

export default adaptive

import adaptive from '@/directive/el-table'
export default { 
  name：'Test',
  directives: { adaptive }，
  ... ...
}

<el-table  
  ref="table"
  // 自定義指令，bottomOffset 代表距離底部的距離
  v-adaptive="{bottomOffset: 85}"
  // 高度屬性，100無(wú)具體意義，僅為初始值，不可省略
  height="100px" 
 >
 ... ...
 </table>

import adaptive from './directive/el-table'

Vue.use(adaptive)