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import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'data.dart';
class Sia extends StatelessWidget {
const Sia({super.key});
@override
Widget build(BuildContext context) {
return ChangeNotifierProvider<AppState>(
create: (BuildContext context) => AppState(),
child: MaterialApp(
home: Consumer<AppState>(
builder: (_, AppState provider, _) {
if (provider.state == MachineState.init) {
return const ConnectionPage();
}
return const DevicesPage();
}
),
),
);
}
}
class ConnectionPage extends StatelessWidget {
const ConnectionPage({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text("Connection")),
body: const Padding(
padding: EdgeInsets.all(16.0),
child: TextField(
decoration: InputDecoration(
labelText: "Server name",
hintText: "iot.example.org",
border: OutlineInputBorder(),
),
),
),
bottomNavigationBar: const ConnectionStatus(),
);
}
}
class DevicesPage extends StatelessWidget {
const DevicesPage({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text("Contacts")),
body: const Column(
children: <Widget>[
Expanded(child: ContactList()),
],
),
bottomNavigationBar: const ConnectionStatus(),
);
}
}
class ContactList extends StatelessWidget {
const ContactList({super.key});
@override
Widget build(BuildContext context) {
return Consumer<AppState>(
builder: (BuildContext context, AppState state, Widget? child) {
return ListView.builder(
itemCount: state.contacts.length,
itemBuilder: (BuildContext context, int index) {
MapEntry<String, bool> data = state.contacts.entries.elementAt(index);
String address = data.key;
bool isOpen = data.value;
return ListTile(
leading: Icon(
isOpen ? Icons.meeting_room : Icons.door_front_door,
color: isOpen ? Colors.red : Colors.green,
),
title: Text(address),
);
},
);
},
);
}
}
class ConnectionStatus extends StatelessWidget {
const ConnectionStatus({super.key});
@override
Widget build(BuildContext context) {
return SafeArea(
child: Consumer<AppState>(
builder: (BuildContext context, AppState state, Widget? child) {
Icon icon = const Icon(Icons.cloud_off, color: Colors.grey);
Text text = const Text('Disconnected');
switch (state.state) {
case MachineState.init:
icon = const Icon(Icons.cloud_off, color: Colors.grey);
text = const Text('Off');
case MachineState.disconnected:
icon = const Icon(Icons.cloud_off, color: Colors.red);
text = const Text('Disconnected');
case MachineState.unreachable:
icon = const Icon(Icons.cloud_off, color: Colors.orange);
text = const Text('Unreachable');
case MachineState.reachable:
icon = const Icon(Icons.cloud, color: Colors.green);
text = const Text('Connected');
}
MachineEvent event = MachineEvent.disconnect;
String action = 'disconnect';
if (state.state == MachineState.init) {
event = MachineEvent.connect;
action = 'connect';
}
return Row(
children: <Widget>[
Expanded(
child: ListTile(
leading: icon,
title: text,
trailing: ElevatedButton(
onPressed: () {
state.process(event);
},
child: Text(action),
),
),
),
],
);
},
),
);
}
}
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