Add a persistent bottom sheet to the stocks demo

examples/stocks/lib/main.dart

@@ -81,7 +81,7 @@ class StocksAppState extends State<StocksApp> {
       if (path.length != 3)
         return null;
       if (_stocks.containsKey(path[2]))
-        return (RouteArguments args) => new StockSymbolViewer(stock: _stocks[path[2]]);
+        return (RouteArguments args) => new StockSymbolPage(stock: _stocks[path[2]]);
       return null;
     }
     return null;

examples/stocks/lib/stock_home.dart

@@ -20,6 +20,7 @@ class StockHome extends StatefulComponent {
 class StockHomeState extends State<StockHome> {
 
   final GlobalKey<PlaceholderState> _snackBarPlaceholderKey = new GlobalKey<PlaceholderState>();
+  final GlobalKey<PlaceholderState> _bottomSheetPlaceholderKey = new GlobalKey<PlaceholderState>();
   bool _isSearching = false;
   String _searchQuery;
 
@@ -188,13 +189,20 @@ class StockHomeState extends State<StockHome> {
         });
         showModalBottomSheet(
           context: context,
-          child: new StockSymbolViewer(stock: stock, showToolBar: false)
+          child: new StockSymbolBottomSheet(stock: stock)
         );
       },
       onOpen: (Stock stock, Key arrowKey) {
         Set<Key> mostValuableKeys = new Set<Key>();
         mostValuableKeys.add(arrowKey);
         Navigator.of(context).pushNamed('/stock/${stock.symbol}', mostValuableKeys: mostValuableKeys);
+      },
+      onShow: (Stock stock, Key arrowKey) {
+        showBottomSheet(
+          placeholderKey: _bottomSheetPlaceholderKey,
+          context: context,
+          child: new StockSymbolBottomSheet(stock: stock)
+        );
       }
     );
   }
@@ -267,6 +275,7 @@ class StockHomeState extends State<StockHome> {
       toolBar: _isSearching ? buildSearchBar() : buildToolBar(),
       body: buildTabNavigator(),
       snackBar: new Placeholder(key: _snackBarPlaceholderKey),
+      bottomSheet: new Placeholder(key: _bottomSheetPlaceholderKey),
       floatingActionButton: buildFloatingActionButton()
     );
   }

examples/stocks/lib/stock_list.dart

@@ -5,10 +5,11 @@
 part of stocks;
 
 class StockList extends StatelessComponent {
-  StockList({ Key key, this.stocks, this.onOpen, this.onAction }) : super(key: key);
+  StockList({ Key key, this.stocks, this.onOpen, this.onShow, this.onAction }) : super(key: key);
 
   final List<Stock> stocks;
   final StockRowActionCallback onOpen;
+  final StockRowActionCallback onShow;
   final StockRowActionCallback onAction;
 
   Widget build(BuildContext context) {
@@ -19,6 +20,7 @@ class StockList extends StatelessComponent {
         return new StockRow(
           stock: stock,
           onPressed: onOpen,
+          onDoubleTap: onShow,
           onLongPressed: onAction
         );
       }

examples/stocks/lib/stock_row.dart

@@ -27,6 +27,7 @@ class StockRow extends StatelessComponent {
   StockRow({
     Stock stock,
     this.onPressed,
+    this.onDoubleTap,
     this.onLongPressed
   }) : this.stock = stock,
        _arrowKey = new StockRowPartKey(stock, StockRowPartKind.arrow),
@@ -34,22 +35,15 @@ class StockRow extends StatelessComponent {
 
   final Stock stock;
   final StockRowActionCallback onPressed;
+  final StockRowActionCallback onDoubleTap;
   final StockRowActionCallback onLongPressed;
 
   final Key _arrowKey;
 
   static const double kHeight = 79.0;
 
-  GestureTapCallback _getTapHandler(StockRowActionCallback callback) {
-    if (callback == null)
-      return null;
-    return () => callback(stock, _arrowKey);
-  }
-
-  GestureLongPressCallback _getLongPressHandler(StockRowActionCallback callback) {
-    if (callback == null)
-      return null;
-    return () => callback(stock, _arrowKey);
+  GestureTapCallback _getHandler(StockRowActionCallback callback) {
+    return callback == null ? null : () => callback(stock, _arrowKey);
   }
 
   Widget build(BuildContext context) {
@@ -58,8 +52,9 @@ class StockRow extends StatelessComponent {
     if (stock.percentChange > 0)
       changeInPrice = "+" + changeInPrice;
     return new InkWell(
-      onTap: _getTapHandler(onPressed),
-      onLongPress: _getLongPressHandler(onLongPressed),
+      onTap: _getHandler(onPressed),
+      onDoubleTap: _getHandler(onDoubleTap),
+      onLongPress: _getHandler(onLongPressed),
       child: new Container(
         padding: const EdgeDims.TRBL(16.0, 16.0, 20.0, 16.0),
         decoration: new BoxDecoration(

examples/stocks/lib/stock_symbol_viewer.dart

@@ -4,11 +4,10 @@
 
 part of stocks;
 
-class StockSymbolViewer extends StatelessComponent {
-  StockSymbolViewer({ this.stock, this.showToolBar: true });
+class StockSymbolView extends StatelessComponent {
+  StockSymbolView({ this.stock});
 
   final Stock stock;
-  final bool showToolBar;
 
   Widget build(BuildContext context) {
     String lastSale = "\$${stock.lastSale.toStringAsFixed(2)}";
@@ -17,42 +16,42 @@ class StockSymbolViewer extends StatelessComponent {
       changeInPrice = "+" + changeInPrice;
 
     TextStyle headings = Theme.of(context).text.body2;
-    Widget body = new Block(<Widget>[
-      new Container(
-        margin: new EdgeDims.all(20.0),
-        child: new Card(
-          child: new Container(
-            padding: new EdgeDims.all(20.0),
-            child: new Column(<Widget>[
-                new Row(<Widget>[
-                  new Text(
-                    '${stock.symbol}',
-                    style: Theme.of(context).text.display2
-                  ),
-                  new Hero(
-                    tag: StockRowPartKind.arrow,
-                    turns: 2,
-                    child: new StockArrow(percentChange: stock.percentChange)
-                  ),
-                ],
-                justifyContent: FlexJustifyContent.spaceBetween
-              ),
-              new Text('Last Sale', style: headings),
-              new Text('$lastSale ($changeInPrice)'),
-              new Container(
-                height: 8.0
-              ),
-              new Text('Market Cap', style: headings),
-              new Text('${stock.marketCap}'),
-            ])
-          )
-        )
+    return new Container(
+      padding: new EdgeDims.all(20.0),
+      child: new Column(<Widget>[
+          new Row(<Widget>[
+            new Text(
+              '${stock.symbol}',
+              style: Theme.of(context).text.display2
+            ),
+            new Hero(
+              tag: StockRowPartKind.arrow,
+              turns: 2,
+              child: new StockArrow(percentChange: stock.percentChange)
+            ),
+          ],
+          justifyContent: FlexJustifyContent.spaceBetween
+        ),
+        new Text('Last Sale', style: headings),
+        new Text('$lastSale ($changeInPrice)'),
+        new Container(
+          height: 8.0
+        ),
+        new Text('Market Cap', style: headings),
+        new Text('${stock.marketCap}'),
+      ],
+         justifyContent: FlexJustifyContent.collapse
       )
-    ]);
+    );
+  }
+}
+
+class StockSymbolPage extends StatelessComponent {
+  StockSymbolPage({ this.stock });
 
-    if (!showToolBar)
-      return body;
+  final Stock stock;
 
+  Widget build(BuildContext context) {
     return new Scaffold(
       toolBar: new ToolBar(
         left: new IconButton(
@@ -63,8 +62,28 @@ class StockSymbolViewer extends StatelessComponent {
         ),
         center: new Text(stock.name)
       ),
-      body: body
+      body: new Block(<Widget>[
+        new Container(
+          margin: new EdgeDims.all(20.0),
+          child: new Card(child: new StockSymbolView(stock: stock))
+        )
+      ])
     );
   }
+}
+
+class StockSymbolBottomSheet extends StatelessComponent {
+  StockSymbolBottomSheet({ this.stock });
+
+  final Stock stock;
 
+  Widget build(BuildContext context) {
+    return new Container(
+      child: new StockSymbolView(stock: stock),
+      padding: new EdgeDims.all(10.0),
+      decoration: new BoxDecoration(
+        border: new Border(top: new BorderSide(color: Colors.black26, width: 1.0))
+      )
+   );
+  }
 }

packages/flutter/lib/src/material/ink_well.dart

@@ -28,6 +28,7 @@ class InkWell extends StatefulComponent {
     Key key,
     this.child,
     this.onTap,
+    this.onDoubleTap,
     this.onLongPress,
     this.onHighlightChanged,
     this.defaultColor,
@@ -36,6 +37,7 @@ class InkWell extends StatefulComponent {
 
   final Widget child;
   final GestureTapCallback onTap;
+  final GestureTapCallback onDoubleTap;
   final GestureLongPressCallback onLongPress;
   final _HighlightChangedCallback onHighlightChanged;
   final Color defaultColor;
@@ -54,6 +56,7 @@ class _InkWellState extends State<InkWell> {
       duration: _kInkWellHighlightFadeDuration,
       child: new _InkSplashes(
         onTap: config.onTap,
+        onDoubleTap: config.onDoubleTap,
         onLongPress: config.onLongPress,
         onHighlightChanged: (bool value) {
           setState(() {
@@ -134,10 +137,12 @@ class _RenderInkSplashes extends RenderProxyBox {
   _RenderInkSplashes({
     RenderBox child,
     GestureTapCallback onTap,
+    GestureTapCallback onDoubleTap,
     GestureLongPressCallback onLongPress,
     this.onHighlightChanged
   }) : super(child) {
     this.onTap = onTap;
+    this.onDoubleTap = onDoubleTap;
     this.onLongPress = onLongPress;
   }
 
@@ -148,6 +153,13 @@ class _RenderInkSplashes extends RenderProxyBox {
     _syncTapRecognizer();
   }
 
+  GestureTapCallback get onDoubleTap => _onDoubleTap;
+  GestureTapCallback _onDoubleTap;
+  void set onDoubleTap (GestureTapCallback value) {
+    _onDoubleTap = value;
+    _syncDoubleTapRecognizer();
+  }
+
   GestureTapCallback get onLongPress => _onLongPress;
   GestureTapCallback _onLongPress;
   void set onLongPress (GestureTapCallback value) {
@@ -161,6 +173,7 @@ class _RenderInkSplashes extends RenderProxyBox {
   _InkSplash _lastSplash;
 
   TapGestureRecognizer _tap;
+  DoubleTapGestureRecognizer _doubleTap;
   LongPressGestureRecognizer _longPress;
 
   void _removeSplash(_InkSplash splash) {
@@ -170,8 +183,9 @@ class _RenderInkSplashes extends RenderProxyBox {
   }
 
   void handleEvent(InputEvent event, BoxHitTestEntry entry) {
-    if (event.type == 'pointerdown' && (onTap != null || onLongPress != null)) {
+    if (event.type == 'pointerdown' && (onTap != null || onDoubleTap != null || onLongPress != null)) {
       _tap?.addPointer(event);
+      _doubleTap?.addPointer(event);
       _longPress?.addPointer(event);
     }
   }
@@ -179,17 +193,19 @@ class _RenderInkSplashes extends RenderProxyBox {
   void attach() {
     super.attach();
     _syncTapRecognizer();
+    _syncDoubleTapRecognizer();
     _syncLongPressRecognizer();
   }
 
   void detach() {
     _disposeTapRecognizer();
+    _disposeDoubleTapRecognizer();
     _disposeLongPressRecognizer();
     super.detach();
   }
 
   void _syncTapRecognizer() {
-    if (onTap == null && onLongPress == null) {
+    if (onTap == null && doubleTap == null && onLongPress == null) {
       _disposeTapRecognizer();
     } else {
       _tap ??= new TapGestureRecognizer(router: FlutterBinding.instance.pointerRouter)
@@ -204,6 +220,20 @@ class _RenderInkSplashes extends RenderProxyBox {
     _tap = null;
   }
 
+  void _syncDoubleTapRecognizer() {
+    if (onDoubleTap == null) {
+      _disposeDoubleTapRecognizer();
+    } else {
+      _doubleTap ??= new DoubleTapGestureRecognizer(router: FlutterBinding.instance.pointerRouter)
+        ..onDoubleTap = _handleDoubleTap;
+    }
+  }
+
+  void _disposeDoubleTapRecognizer() {
+    _doubleTap?.dispose();
+    _doubleTap = null;
+  }
+
   void _syncLongPressRecognizer() {
     if (onLongPress == null) {
       _disposeLongPressRecognizer();
@@ -241,6 +271,13 @@ class _RenderInkSplashes extends RenderProxyBox {
       onHighlightChanged(false);
   }
 
+  void _handleDoubleTap() {
+    _lastSplash?.confirm();
+    _lastSplash = null;
+    if (onDoubleTap != null)
+      onDoubleTap();
+  }
+
   void _handleLongPress() {
     _lastSplash?.confirm();
     _lastSplash = null;
@@ -269,18 +306,26 @@ class _InkSplashes extends OneChildRenderObjectWidget {
     Key key,
     Widget child,
     this.onTap,
+    this.onDoubleTap,
     this.onLongPress,
     this.onHighlightChanged
   }) : super(key: key, child: child);
 
   final GestureTapCallback onTap;
+  final GestureTapCallback onDoubleTap;
   final GestureLongPressCallback onLongPress;
   final _HighlightChangedCallback onHighlightChanged;
 
-  _RenderInkSplashes createRenderObject() => new _RenderInkSplashes(onTap: onTap, onLongPress: onLongPress, onHighlightChanged: onHighlightChanged);
+  _RenderInkSplashes createRenderObject() => new _RenderInkSplashes(
+    onTap: onTap,
+    onDoubleTap: onDoubleTap,
+    onLongPress: onLongPress,
+    onHighlightChanged: onHighlightChanged
+  );
 
   void updateRenderObject(_RenderInkSplashes renderObject, _InkSplashes oldWidget) {
     renderObject.onTap = onTap;
+    renderObject.onDoubleTap = onDoubleTap;
     renderObject.onLongPress = onLongPress;
     renderObject.onHighlightChanged = onHighlightChanged;
   }