<template>
  <div class="paging-content clearfix">
    <div class="fl">
      总共<b> {{total}} </b>条&nbsp;
      <select v-model="limit">
        <option>10</option>
        <option>20</option>
        <option>30</option>
        <option>40</option>
        <option>50</option>
        <option>100</option>
      </select>条/页
    </div>
    <div class="fr paging-box">
      <a v-if="+no>1" class="fa fa-angle-double-left" @click="goToPage(1)"></a>
      <a v-if="+no<=1" class="fa fa-angle-double-left"></a>
      <a v-if="+no>1" class="fa fa-angle-left" @click="goToPage(+no - 1)"></a>
      <a v-if="+no<=1" class="fa fa-angle-left"></a>
      <a v-if="+no-2>1">...</a>
      <a v-if="+no-2>0" @click="goToPage(+no-2)">{{+no - 2}}</a>
      <a v-if="+no-1>0" @click="goToPage(+no-1)">{{+no - 1}}</a>
      <a v-if="+no>0" style="color: #000;background: #eee;">{{no}}</a>
      <a v-if="+no+1<=+sum" @click="goToPage(+no+1)">{{+no + 1}}</a>
      <a v-if="+no+2<=+sum" @click="goToPage(+no+2)">{{+no + 2}}</a>
      <a v-if="+no+2<=+sum-1">...</a>
      <a v-if="+no<+sum" class="fa fa-angle-right" @click="goToPage(+no + 1)"></a>
      <a v-if="+no>=+sum" class="fa fa-angle-right"></a>
      <a v-if="+no<+sum" class="fa fa-angle-double-right" @click="goToPage(+sum)"></a>
      <a v-if="+no>=+sum" class="fa fa-angle-double-right"></a>
    </div>
  </div>
</template>

<script>
  module.exports = {
    props: ['no', 'limit', 'total'],
    computed: {
      sum: function() {
        return Math.ceil(this.total/this.limit);
      }
    },
    methods: {
      'goToPage': function(page_no) {
        this.$dispatch('page-change', page_no);
      }
    },
    watch: {
      'limit': function(newVal, oldVal) {
        if(newVal!=oldVal&&oldVal!=undefined) {
          this.$dispatch('page-limit-change', newVal);
        }
      }
    }
  }
</script>

<style lang="less" rel="stylesheet/less">
  //定义了一个颜色参数文件，方便自定义颜色和管理，比如@color-white: #fff;
  @import "../less/variables"; 
  .paging-content {
    > div {
      font-size: 12px;
      color: @color-text-normal;
    }
    select {
      margin-right: 4px;
    }
    .fl {
      float: left;
    }
    .fr {
      float: right;
    }
    .paging-box {
      border-top: 1px solid #ccc;
      border-bottom: 1px solid #ccc;
      border-left: 1px solid #ccc;
      a {
        display: inline-block;
        width: 24px;
        height: 24px;
        border-right: 1px solid #ccc;
        line-height: 24px;
        text-align: center;
        float: left;
        color: @color-text-blue;
        cursor: pointer;
      }
    }
  }
</style>

import page from 'example-page'

components:{
  page: page
},

<paging :no.sync="params.page_no" :limit.sync="params.page_limit" :total.sync="total_items"></paging>