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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'stock_arrow.dart';
import 'stock_data.dart';
class _StockSymbolView extends StatelessWidget {
const _StockSymbolView({ this.stock, this.arrow });
final Stock stock;
final Widget arrow;
@override
Widget build(BuildContext context) {
assert(stock != null);
final String lastSale = '\$${stock.lastSale.toStringAsFixed(2)}';
String changeInPrice = '${stock.percentChange.toStringAsFixed(2)}%';
if (stock.percentChange > 0)
changeInPrice = '+' + changeInPrice;
final TextStyle headings = Theme.of(context).textTheme.body2;
return new Container(
padding: const EdgeInsets.all(20.0),
child: new Column(
children: <Widget>[
new Row(
children: <Widget>[
new Text(
'${stock.symbol}',
style: Theme.of(context).textTheme.display2
),
arrow,
],
mainAxisAlignment: MainAxisAlignment.spaceBetween
),
new Text('Last Sale', style: headings),
new Text('$lastSale ($changeInPrice)'),
new Container(
height: 8.0
),
new Text('Market Cap', style: headings),
new Text('${stock.marketCap}'),
new Container(
height: 8.0
),
new RichText(
text: new TextSpan(
style: DefaultTextStyle.of(context).style.merge(const TextStyle(fontSize: 8.0)),
text: 'Prices may be delayed by ',
children: <TextSpan>[
const TextSpan(text: 'several', style: const TextStyle(fontStyle: FontStyle.italic)),
const TextSpan(text: ' years.'),
]
)
),
],
mainAxisSize: MainAxisSize.min
)
);
}
}
class StockSymbolPage extends StatelessWidget {
const StockSymbolPage({ this.symbol, this.stocks });
final String symbol;
final StockData stocks;
@override
Widget build(BuildContext context) {
return new AnimatedBuilder(
animation: stocks,
builder: (BuildContext context, Widget child) {
final Stock stock = stocks[symbol];
return new Scaffold(
appBar: new AppBar(
title: new Text(stock?.name ?? symbol)
),
body: new SingleChildScrollView(
child: new Container(
margin: const EdgeInsets.all(20.0),
child: new Card(
child: new AnimatedCrossFade(
duration: const Duration(milliseconds: 300),
firstChild: const Padding(
padding: const EdgeInsets.all(20.0),
child: const Center(child: const CircularProgressIndicator()),
),
secondChild: stock != null
? new _StockSymbolView(
stock: stock,
arrow: new Hero(
tag: stock,
child: new StockArrow(percentChange: stock.percentChange),
),
) : new Padding(
padding: const EdgeInsets.all(20.0),
child: new Center(child: new Text('$symbol not found')),
),
crossFadeState: stock == null && stocks.loading ? CrossFadeState.showFirst : CrossFadeState.showSecond,
),
)
)
)
);
},
);
}
}
class StockSymbolBottomSheet extends StatelessWidget {
const StockSymbolBottomSheet({ this.stock });
final Stock stock;
@override
Widget build(BuildContext context) {
return new Container(
padding: const EdgeInsets.all(10.0),
decoration: const BoxDecoration(
border: const Border(top: const BorderSide(color: Colors.black26))
),
child: new _StockSymbolView(
stock: stock,
arrow: new StockArrow(percentChange: stock.percentChange)
)
);
}
}