import 'package:expandable/expandable.dart';
import 'package:flutter/material.dart';

class PointsExpandableNotifier extends StatefulWidget {
  final Widget headerWidget;
  final Widget bodyWidget;
  final Widget collapsed;
  final bool isExpand;
  bool expandFlag = false;
  var controller = new ExpandableController();

  PointsExpandableNotifier(
      {this.headerWidget, this.bodyWidget, this.collapsed, this.isExpand});

  @override
  _PointsExpandableNotifierState createState() =>
      _PointsExpandableNotifierState();
}

class _PointsExpandableNotifierState extends State<PointsExpandableNotifier> {
  @override
  Widget build(BuildContext context) {
    setState(() {
      if (widget.isExpand == true) {
        widget.expandFlag = widget.isExpand;
        widget.controller.expanded = true;
      }
    });

    return ExpandableNotifier(
      child: Padding(
        padding: const EdgeInsets.only(left: 0, right: 0),
        child: Column(
          children: <Widget>[
            SizedBox(
              child: widget.headerWidget,
            ),
            ScrollOnExpand(
              scrollOnExpand: true,
              scrollOnCollapse: false,
              child: ExpandablePanel(
                theme: const ExpandableThemeData(
                  headerAlignment: ExpandablePanelHeaderAlignment.center,
                  tapBodyToCollapse: true,
                ),
                // header: widget.headerWidget,
                /*
               // setState(() {
                    //   widget.expandFlag = !widget.expandFlag;
                    //   if (widget.expandFlag == true) {
                    //     widget.controller.expanded = true;
                    //   } else {
                    //     widget.controller.expanded = false;
                    //   }
                    // });
                 */
                collapsed: Container(),
                expanded: widget.bodyWidget,
                builder: (_, collapsed, expanded) {
                  return Padding(
                    padding: EdgeInsets.only(left: 0, right: 0, bottom: 0),
                    child: Expandable(
                      controller: widget.controller,
                      collapsed: collapsed,
                      expanded: expanded,
                      theme: const ExpandableThemeData(crossFadePoint: 0),
                    ),
                  );
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}