cloudsolutions-atoms/lib/views/widgets/status/single_status_menu.dart

import 'package:flutter/material.dart';
import 'package:test_sa/models/lookup.dart';
import 'package:test_sa/views/app_style/colors.dart';
import 'package:test_sa/views/app_style/sizing.dart';
class SingleStatusMenu extends StatefulWidget {
  final List<Lookup> statuses;
  final Lookup initialStatus;
  final Function(Lookup) onSelect;

  const SingleStatusMenu({Key key, this.statuses, this.onSelect, this.initialStatus}) : super(key: key);
  @override
  _SingleStatusMenuState createState() => _SingleStatusMenuState();
}

class _SingleStatusMenuState extends State<SingleStatusMenu> {

  Lookup _selectedStatus;

  @override
  void didUpdateWidget(covariant SingleStatusMenu oldWidget) {
    if(widget.initialStatus != null){
      _selectedStatus = widget.statuses?.firstWhere(
              (element) {
            return element?.id == widget.initialStatus.id;
          });
    } else {
      _selectedStatus = null;
    }
    super.didUpdateWidget(oldWidget);
  }

  @override
  void initState() {
    if(widget.initialStatus != null){
      _selectedStatus = widget.statuses?.firstWhere(
              (element) {
            return element?.id == widget.initialStatus.id;
          });
    }

    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.symmetric(
          horizontal: 16
      ),
      decoration: BoxDecoration(
          color: Colors.white,
          border: Border.all(color:AColors.black),
          borderRadius: BorderRadius.circular(
              AppStyle.borderRadius * AppStyle.getScaleFactor(context)
          ),
          boxShadow: const [
            AppStyle.boxShadow
          ]
      ),
      child: DropdownButton<Lookup>(
        value: _selectedStatus,
        iconSize: 24,
        elevation: 16,
        isExpanded: true,
        hint: Text(
          "Select",
          style: Theme.of(context).textTheme.subtitle1,
        ),
        style: TextStyle(
            color: Theme.of(context).primaryColor
        ),
        underline: SizedBox.shrink(),
        onChanged: (Lookup newValue) {
          setState(() {
            _selectedStatus = newValue;
          });
          widget.onSelect(newValue);
        },
        items: widget.statuses
            .map<DropdownMenuItem<Lookup>>((Lookup value) {
          return DropdownMenuItem<Lookup>(
            value: value,
            child: Text(
                value.label,
              style: Theme.of(context).textTheme.subtitle1.copyWith(
                color: Theme.of(context).primaryColor,
                fontSize: 11,
                //fontWeight: FontWeight.bold
              ),
            ),
          );
        })
            .toList(),
      ),
    );
  }
}