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samples/place_tracker/lib/place_details.dart

344 lines
8.9 KiB

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'place.dart';
import 'stub_data.dart';
class PlaceDetails extends StatefulWidget {
const PlaceDetails({
@required this.place,
@required this.onChanged,
Key key,
}) : assert(place != null),
assert(onChanged != null),
super(key: key);
final Place place;
final ValueChanged<Place> onChanged;
@override
PlaceDetailsState createState() => PlaceDetailsState();
}
class PlaceDetailsState extends State<PlaceDetails> {
Place _place;
GoogleMapController _mapController;
final Set<Marker> _markers = {};
final TextEditingController _nameController = TextEditingController();
final TextEditingController _descriptionController = TextEditingController();
@override
void initState() {
_place = widget.place;
_nameController.text = _place.name;
_descriptionController.text = _place.description;
return super.initState();
}
void _onMapCreated(GoogleMapController controller) {
_mapController = controller;
setState(() {
_markers.add(Marker(
markerId: MarkerId(_place.latLng.toString()),
position: _place.latLng,
));
});
}
Widget _detailsBody() {
return ListView(
padding: const EdgeInsets.fromLTRB(24.0, 12.0, 24.0, 12.0),
children: <Widget>[
_NameTextField(
controller: _nameController,
onChanged: (String value) {
setState(() {
_place = _place.copyWith(name: value);
});
},
),
_DescriptionTextField(
controller: _descriptionController,
onChanged: (String value) {
setState(() {
_place = _place.copyWith(description: value);
});
},
),
_StarBar(
rating: _place.starRating,
onChanged: (int value) {
setState(() {
_place = _place.copyWith(starRating: value);
});
},
),
_Map(
center: _place.latLng,
mapController: _mapController,
onMapCreated: _onMapCreated,
markers: _markers,
),
const _Reviews(),
],
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('${_place.name}'),
backgroundColor: Colors.green[700],
actions: <Widget>[
Padding(
padding: const EdgeInsets.fromLTRB(0.0, 0.0, 8.0, 0.0),
child: IconButton(
icon: const Icon(Icons.save, size: 30.0),
onPressed: () {
widget.onChanged(_place);
Navigator.pop(context);
},
),
),
],
),
body: GestureDetector(
onTap: () {
FocusScope.of(context).requestFocus(FocusNode());
},
child: _detailsBody(),
),
);
}
}
class _NameTextField extends StatelessWidget {
const _NameTextField({
@required this.controller,
@required this.onChanged,
Key key,
}) : assert(controller != null),
assert(onChanged != null),
super(key: key);
final TextEditingController controller;
final ValueChanged<String> onChanged;
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 16.0),
child: TextField(
decoration: const InputDecoration(
labelText: 'Name',
labelStyle: TextStyle(fontSize: 18.0),
),
style: const TextStyle(fontSize: 20.0, color: Colors.black87),
autocorrect: true,
controller: controller,
onChanged: (String value) {
onChanged(value);
},
),
);
}
}
class _DescriptionTextField extends StatelessWidget {
const _DescriptionTextField({
@required this.controller,
@required this.onChanged,
Key key,
}) : assert(controller != null),
assert(onChanged != null),
super(key: key);
final TextEditingController controller;
final ValueChanged<String> onChanged;
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 16.0),
child: TextField(
decoration: const InputDecoration(
labelText: 'Description',
labelStyle: TextStyle(fontSize: 18.0),
),
style: const TextStyle(fontSize: 20.0, color: Colors.black87),
maxLines: null,
autocorrect: true,
controller: controller,
onChanged: (String value) {
onChanged(value);
},
),
);
}
}
class _StarBar extends StatelessWidget {
const _StarBar({
@required this.rating,
@required this.onChanged,
Key key,
}) : assert(rating != null && rating >= 0 && rating <= maxStars),
assert(onChanged != null),
super(key: key);
static const int maxStars = 5;
final int rating;
final ValueChanged<int> onChanged;
@override
Widget build(BuildContext context) {
return Row(
mainAxisAlignment: MainAxisAlignment.center,
children: List.generate(maxStars, (int index) {
return IconButton(
icon: const Icon(Icons.star),
iconSize: 40.0,
color: rating > index ? Colors.amber : Colors.grey[400],
onPressed: () {
onChanged(index + 1);
},
);
}).toList(),
);
}
}
class _Map extends StatelessWidget {
const _Map({
@required this.center,
@required this.mapController,
@required this.onMapCreated,
@required this.markers,
Key key,
}) : assert(center != null),
assert(onMapCreated != null),
super(key: key);
final LatLng center;
final GoogleMapController mapController;
final ArgumentCallback<GoogleMapController> onMapCreated;
final Set<Marker> markers;
@override
Widget build(BuildContext context) {
return Card(
margin: const EdgeInsets.symmetric(vertical: 16.0),
elevation: 4.0,
child: SizedBox(
width: 340.0,
height: 240.0,
child: GoogleMap(
onMapCreated: onMapCreated,
initialCameraPosition: CameraPosition(
target: center,
zoom: 16.0,
),
markers: markers,
zoomGesturesEnabled: false,
rotateGesturesEnabled: false,
tiltGesturesEnabled: false,
scrollGesturesEnabled: false,
),
),
);
}
}
class _Reviews extends StatelessWidget {
const _Reviews({
Key key,
}) : super(key: key);
Widget _buildSingleReview(String reviewText) {
return Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.symmetric(vertical: 10.0),
child: Row(
children: <Widget>[
Container(
width: 80.0,
height: 80.0,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(40.0),
border: Border.all(
width: 3.0,
color: Colors.grey,
),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: const <Widget>[
Text(
'5',
style: TextStyle(
fontSize: 24.0,
fontWeight: FontWeight.bold,
color: Colors.black87,
),
),
Icon(
Icons.star,
color: Colors.amber,
size: 36.0,
),
],
),
),
const SizedBox(width: 16.0),
Expanded(
child: Text(
reviewText,
style: const TextStyle(fontSize: 20.0, color: Colors.black87),
maxLines: null,
),
),
],
),
),
Divider(
height: 8.0,
color: Colors.grey[700],
),
],
);
}
@override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
const Padding(
padding: EdgeInsets.fromLTRB(0.0, 12.0, 0.0, 8.0),
child: Align(
alignment: Alignment.topLeft,
child: Text(
'Reviews',
style: TextStyle(
fontSize: 24.0,
fontWeight: FontWeight.bold,
decoration: TextDecoration.underline,
color: Colors.black87,
),
),
),
),
Column(
children: StubData.reviewStrings
.map((reviewText) => _buildSingleReview(reviewText))
.toList(),
),
],
);
}
}