import 'package:flutter/material.dart';

class Sorteio{
  bool isExpanded;
  String header;
  Corpo body;
  Sorteio( {this.isExpanded:true, this.header, this.body});

}
class  Corpo{
   String regulamento;
   String vencedor;
   Corpo(this.regulamento, this.vencedor);

}
class SorteiosPage extends StatefulWidget{
    @override
    _SorteiosPageState createState() => new _SorteiosPageState();
}
class _SorteiosPageState extends State<SorteiosPage>{
    List<Sorteio> _items = <Sorteio>[
      new Sorteio(header:"Sorteio1", body:new Corpo("Regulamento","Vencedor")),
      new Sorteio(header:"Sorteio2", body:new Corpo("Regulamento","Vencedor")),
    ];
    Widget build(BuildContext context){
      return new Scaffold(
        appBar:new AppBar(
          title: new Text("Marine Supermercados"),
          backgroundColor: Colors.redAccent,
        ),
        body:new ListView(children: <ExpansionPanelList>[

                new ExpansionPanelList(
                     expansionCallback: (int panelIndex, bool isExpanded){
                       setState((){
                         _items[panelIndex].isExpanded = !_items[panelIndex].isExpanded;
                       });
                     },
                    children:_items.map((Sorteio sorteio){
                      return new ExpansionPanel(
                            isExpanded: sorteio.isExpanded,
                            headerBuilder: (BuildContext context, bool isExpanded){
                              return new Center(child:new Text(sorteio.header),);
                            },
                            body: new Column(
                                children: <Widget>[
                                  new Divider(),
                                  new Center(
                                    child:new Container(
                                      padding: const EdgeInsets.symmetric(vertical:10.0),
                                    child: new Text(sorteio.body.regulamento),
                                    ),
                                    ),
                                  new Center(
                                    child:new Container(
                                      padding: const EdgeInsets.symmetric(vertical:10.0),
                                    child: new Text(sorteio.body.vencedor),
                                    ),
                                    ),
                              ],),

                      );
                    }).toList(),
        ),
        ],
        ),
      );
    }
}