Use semantic names for callbacks instead of onGestureTap

sky/sdk/lib/widgets/floating_action_button.dart

 // 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 '../theme2/colors.dart';
 import '../theme2/edges.dart';
 import 'basic.dart';
 import 'button_base.dart';
 import 'ink_well.dart';
 import 'material.dart';
 
 // TODO(eseidel): This needs to change based on device size?
 // http://www.google.com/design/spec/layout/metrics-keylines.html#metrics-keylines-keylines-spacing
 const double _kSize = 56.0;
 
 class FloatingActionButton extends ButtonBase {
 
-  FloatingActionButton({ String key, this.child }) : super(key: key);
+  FloatingActionButton({
+    String key,
+    this.child,
+    this.enabled: true,

[Hixie, 2015/06/17 22:59:21]

either remove this or make it affect the UI

[abarth-chromium, 2015/06/17 23:04:04]

Removed.

+    Function onPressed
+  }) : super(key: key);
 
-  final Widget child;
+  bool enabled;
+  Widget child;
+  Function onPressed;
+
+  void syncFields(FloatingActionButton source) {
+    enabled = source.enabled;
+    child = source.child;
+    onPressed = source.onPressed;
+  }

[Hixie, 2015/06/17 22:59:21]

call the superclass.

[abarth-chromium, 2015/06/17 23:04:04]

Done.

 
   Widget buildContent() {
     return new Material(
-      child: new ClipOval(
-        child: new Container(
-          width: _kSize,
-          height: _kSize,
-          child: new InkWell(child: new Center(child: child))
-        )
-      ),
       color: Red[500],
       edge: MaterialEdge.circle,
-      level: highlight ? 3 : 2
+      level: highlight ? 3 : 2,
+      child: new ClipOval(
+        child: new Listener(
+          onGestureTap: (_) {
+            if (onPressed != null && enabled)
+              onPressed();
+          },
+          child: new Container(
+            width: _kSize,
+            height: _kSize,
+            child: new InkWell(child: new Center(child: child))
+          )
+        )
+      )
     );
   }
 
 }