import 'package:flutter/material.dart';

import '../service/service_method.dart';

import 'dart:convert';

import '../model/category.dart';

import 'package:flutter_screenutil/flutter_screenutil.dart';

class CategoryPage extends StatefulWidget {

  @override

  _CategoryPageState createState() => _CategoryPageState();

}

class _CategoryPageState extends State<CategoryPage> {

  @override

  Widget build(BuildContext context) {

    //_getCategory();

    return Scaffold(

      appBar: AppBar(title: Text('商品分类'),),

      body: Container(

        child: Row(

          children: <Widget>[

            LeftCategoryNav(),

            Column(

              children: <Widget>[

                RightCategoryNav()

              ],

            )

          ],

        ),

      ),

    );

  }

}

//左侧大类导航

class LeftCategoryNav extends StatefulWidget {

  @override

  _LeftCategoryNavState createState() => _LeftCategoryNavState();

}

class _LeftCategoryNavState extends State<LeftCategoryNav> {

  List list=[];

  @override

  void initState() {

    super.initState();

    _getCategory();//请求接口的数据

  }

  @override

  Widget build(BuildContext context) {

    return Container(

      width: ScreenUtil().setWidth(180),

      decoration: BoxDecoration(

        border: Border(

          right: BorderSide(width:1.0,color: Colors.black12),//有边框

        )

      ),

      child: ListView.builder(

        itemCount: list.length,

        itemBuilder: (contex,index){

          return _leftInkWell(index);

        },

      ),

    );

  }

  Widget _leftInkWell(int index){

    return InkWell(

      onTap: (){},

      child: Container(

        height: ScreenUtil().setHeight(100),

        padding: EdgeInsets.only(left:10.0,top:10.0),

        decoration: BoxDecoration(

          color: Colors.white,

          border: Border(

            bottom: BorderSide(width: 1.0,color: Colors.black12)

          )

        ),

        child: Text(

          list[index].mallCategoryName,

          style: TextStyle(fontSize: ScreenUtil().setSp(28)),//设置字体大小，为了兼容使用setSp

        ),

      ),

    );

  }

   void _getCategory() async{

    await request('getCategory').then((val){

      var data=json.decode(val.toString());

      //print(data);

      CategoryModel category= CategoryModel.fromJson(data);

      setState(() {

       list=category.data;

      });

      //list.data.forEach((item)=>print(item.mallCategoryName));

    });

  }

}

class RightCategoryNav extends StatefulWidget {

  @override

  _RightCategoryNavState createState() => _RightCategoryNavState();

}

class _RightCategoryNavState extends State<RightCategoryNav> {

  List list = ['名酒','宝丰','北京二锅头','舍得','五粮液','茅台','散白'];

  @override

  Widget build(BuildContext context) {

    return Container(

      height: ScreenUtil().setHeight(80),

      width: ScreenUtil().setWidth(570),//总的宽度是750 -180

      decoration: BoxDecoration(

        color: Colors.white,//白色背景

        border: Border(

          bottom: BorderSide(width: 1.0,color: Colors.black12)//边界线

        )

      ),

      child: ListView.builder(

        scrollDirection: Axis.horizontal,

        itemCount: list.length,

        itemBuilder: (context,index){

          return _rightInkWell(list[index]);

        },

      ),

    );

  }

  Widget _rightInkWell(String item){

    return InkWell(

      onTap: (){},//事件留空

      child: Container(//什么都加一个container，这样好布局

        padding: EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),//上下是10 左右是5.0

        child: Text(

          item,

          style:TextStyle(fontSize: ScreenUtil().setSp(28)),

        ),

      ),

    );

  }

}