trifid_mobile/lib/screens/siteConfig/UnsafeRoutesScreen.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:mobile_nebula/components/FormPage.dart';
import 'package:mobile_nebula/components/config/ConfigButtonItem.dart';
import 'package:mobile_nebula/components/config/ConfigPageItem.dart';
import 'package:mobile_nebula/components/config/ConfigSection.dart';
import 'package:mobile_nebula/models/UnsafeRoute.dart';
import 'package:mobile_nebula/screens/siteConfig/UnsafeRouteScreen.dart';
import 'package:mobile_nebula/services/utils.dart';

class UnsafeRoutesScreen extends StatefulWidget {
  const UnsafeRoutesScreen({Key key, @required this.unsafeRoutes, @required this.onSave}) : super(key: key);

  final List<UnsafeRoute> unsafeRoutes;
  final ValueChanged<List<UnsafeRoute>> onSave;

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

class _UnsafeRoutesScreenState extends State<UnsafeRoutesScreen> {
  Map<Key, UnsafeRoute> unsafeRoutes = {};
  bool changed = false;

  @override
  void initState() {
    widget.unsafeRoutes.forEach((route) {
      unsafeRoutes[UniqueKey()] = route;
    });

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return FormPage(
        title: 'Unsafe Routes',
        changed: changed,
        onSave: _onSave,
        child: ConfigSection(
          children: _buildRoutes(),
        ));
  }

  _onSave() {
    Navigator.pop(context);
    if (widget.onSave != null) {
      widget.onSave(unsafeRoutes.values.toList());
    }
  }

  List<Widget> _buildRoutes() {
    final double ipWidth = Utils.textSize("000.000.000.000/00", CupertinoTheme.of(context).textTheme.textStyle).width;
    List<Widget> items = [];
    unsafeRoutes.forEach((key, route) {
      items.add(ConfigPageItem(
        label: Text(route.route),
        labelWidth: ipWidth,
        content: Text('via ${route.via}', textAlign: TextAlign.end),
        onPressed: () {
          Utils.openPage(context, (context) {
            return UnsafeRouteScreen(
                route: route,
                onSave: (route) {
                  setState(() {
                    changed = true;
                    unsafeRoutes[key] = route;
                  });
                },
                onDelete: () {
                  setState(() {
                    changed = true;
                    unsafeRoutes.remove(key);
                  });
                });
          });
        },
      ));
    });

    items.add(ConfigButtonItem(
      content: Text('Add a new route'),
      onPressed: () {
        Utils.openPage(context, (context) {
          return UnsafeRouteScreen(
              route: UnsafeRoute(),
              onSave: (route) {
                setState(() {
                  changed = true;
                  unsafeRoutes[UniqueKey()] = route;
                });
              });
        });
      },
    ));

    return items;
  }
}