Move mojo frontend into services.dart

What's important about this code is that it's presenting services outside the
VM, not the particular technology used to present the services.

examples/demo_launcher/lib/main.dart

@@ -2,8 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:sky/mojo/activity.dart';
-import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/services.dart';
 import 'package:sky/painting.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/theme/typography.dart' as typography;

examples/fitness/lib/user_data.dart

@@ -9,7 +9,7 @@ import 'dart:async';
 import 'package:path/path.dart' as path;
 
 import 'main.dart';
-import 'package:sky/mojo/activity.dart';
+import 'package:sky/services.dart';
 
 String cachedDataFilePath = null;
 

examples/game/lib/main.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/services.dart';
 import 'package:sky/painting.dart';
 import 'package:sky/src/rendering/object.dart';
 import 'package:sky/src/widgets/basic.dart';

examples/game/test_drawatlas.dart

@@ -1,6 +1,6 @@
 import 'dart:sky';
 
-import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/services.dart';
 import 'package:sky/rendering.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/widgets.dart';

examples/game/test_performance.dart

@@ -1,7 +1,7 @@
 import 'dart:sky' as sky;
 import 'dart:math' as math;
 
-import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/services.dart';
 import 'package:sky/rendering.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/widgets.dart';

examples/mine_digger/lib/main.dart

@@ -4,7 +4,7 @@
 import 'dart:sky' as sky;
 import 'dart:math';
 
-import 'package:sky/mojo/activity.dart' as activity;
+import 'package:sky/services.dart';
 import 'package:sky/painting.dart';
 import 'package:sky/rendering.dart';
 import 'package:sky/theme/colors.dart' as colors;
@@ -113,7 +113,7 @@ class MineDiggerApp extends App {
                 probe(ix, iy);
             },
             onLongPress: () {
-              activity.userFeedback.performHapticFeedback(activity.HapticFeedbackType_LONG_PRESS);
+              userFeedback.performHapticFeedback(HapticFeedbackType_LONG_PRESS);
               flag(ix, iy);
             },
             child: new Listener(

examples/raw/spinning_image.dart

@@ -6,7 +6,7 @@ import 'dart:math' as math;
 import 'dart:sky' as sky;
 import 'dart:typed_data';
 
-import 'package:sky/mojo/net/image_cache.dart' as image_cache;
+import 'package:sky/services.dart';
 
 double timeBase = null;
 
@@ -84,7 +84,7 @@ bool handleEvent(sky.Event event) {
   }
 
   if (event.type == "pointerup") {
-    image_cache.load(url2).first.then(handleImageLoad);
+    imageCache.load(url2).first.then(handleImageLoad);
     return true;
   }
 
@@ -92,7 +92,7 @@ bool handleEvent(sky.Event event) {
 }
 
 void main() {
-  image_cache.load(url1).first.then(handleImageLoad);
+  imageCache.load(url1).first.then(handleImageLoad);
   sky.view.setEventCallback(handleEvent);
   sky.view.setFrameCallback(beginFrame);
 }

examples/rendering/interactive_flex.dart

@@ -5,8 +5,7 @@
 import 'dart:sky' as sky;
 import 'dart:math' as math;
 
-import 'package:sky/mojo/activity.dart';
-import 'package:sky/mojo/net/image_cache.dart' as image_cache;
+import 'package:sky/services.dart';
 import 'package:sky/rendering.dart';
 
 import 'solid_color_box.dart';
@@ -60,7 +59,7 @@ void main() {
 
   // Resizeable image
   image = new RenderImageGrow(null, new Size(100.0, null));
-  image_cache.load("https://www.dartlang.org/logos/dart-logo.png").first.then((sky.Image dartLogo) {
+  imageCache.load("https://www.dartlang.org/logos/dart-logo.png").first.then((sky.Image dartLogo) {
     image.image = dartLogo;
   });
 

examples/stocks/lib/stock_data.dart

@@ -10,8 +10,7 @@
 import 'dart:convert';
 import 'dart:math' as math;
 
-import 'package:sky/mojo/asset_bundle.dart';
-import 'package:sky/mojo/net/fetch.dart';
+import 'package:sky/services.dart';
 
 final math.Random _rng = new math.Random();
 

examples/widgets/piano.dart

@@ -4,8 +4,7 @@
 
 import 'package:mojo/mojo/url_response.mojom.dart';
 import 'package:sky_services/media/media.mojom.dart';
-import 'package:sky/mojo/net/fetch.dart';
-import 'package:sky/mojo/shell.dart' as shell;
+import 'package:sky/services.dart';
 import 'package:sky/rendering.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/widgets.dart';

examples/widgets/scale.dart

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:math' as math;
-
 import 'package:sky/rendering.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/widgets.dart';

packages/flutter/lib/mojo/net/image_cache.dart

@@ -1,28 +0,0 @@
-// 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 'dart:async';
-import 'dart:collection';
-import 'dart:sky' as sky;
-
-import 'package:mojo/mojo/url_response.mojom.dart';
-import 'package:sky/mojo/image_resource.dart';
-import 'package:sky/mojo/net/fetch.dart';
-
-final HashMap<String, ImageResource> _cache = new Map<String, ImageResource>();
-
-ImageResource load(String url) {
-  return _cache.putIfAbsent(url, () {
-    Completer<sky.Image> completer = new Completer<sky.Image>();
-    fetchUrl(url).then((UrlResponse response) {
-      if (response.statusCode >= 400) {
-        print("Failed (${response.statusCode}) to load image ${url}");
-        completer.complete(null);
-      } else {
-        new sky.ImageDecoder(response.body.handle.h, completer.complete);
-      }
-    });
-    return new ImageResource(completer.future);
-  });
-}

packages/flutter/lib/services.dart

@@ -0,0 +1,15 @@
+// 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.
+
+/// Services provided by Mojo
+library services;
+
+export 'src/services/activity.dart';
+export 'src/services/asset_bundle.dart';
+export 'src/services/embedder.dart';
+export 'src/services/fetch.dart';
+export 'src/services/image_cache.dart';
+export 'src/services/image_resource.dart';
+export 'src/services/keyboard.dart';
+export 'src/services/shell.dart';

packages/flutter/lib/src/painting/box_painter.dart

@@ -6,7 +6,7 @@ import 'dart:math' as math;
 import 'dart:sky' as sky;
 import 'dart:sky' show Point, Offset, Size, Rect, Color, Paint, Path;
 
-import 'package:sky/mojo/image_resource.dart';
+import 'package:sky/services.dart';
 import 'package:sky/src/painting/shadows.dart';
 
 /// An immutable set of offsets in each of the four cardinal directions

packages/flutter/lib/src/services/README.md

@@ -3,5 +3,5 @@ For example, keyboard.dart wraps the mojo keyboard service in a more
 convenient Dart class.
 
 Files in this directory (and its subdirectories) only depend on core
-Dart libraries, `dart:sky`, `dart:sky.internals`, the 'mojo' package,
-the 'mojo_services' package, and `../base/*`.
+Dart libraries, `dart:sky`, `dart:sky.internals`, the `mojo` package,
+and the `mojo_services` package.

packages/flutter/lib/src/services/activity.dart

@@ -5,7 +5,7 @@
 import 'dart:sky';
 import 'dart:async';
 
-import 'package:sky/mojo/shell.dart' as shell;
+import 'package:sky/src/services/shell.dart';
 import 'package:sky_services/activity/activity.mojom.dart';
 
 export 'package:sky_services/activity/activity.mojom.dart';

packages/flutter/lib/src/services/asset_bundle.dart

@@ -9,10 +9,10 @@ import 'dart:typed_data';
 
 import 'package:mojo/core.dart' as core;
 import 'package:mojo_services/mojo/asset_bundle/asset_bundle.mojom.dart';
-import 'package:sky/mojo/image_resource.dart';
-import 'package:sky/mojo/net/fetch.dart';
-import 'package:sky/mojo/net/image_cache.dart' as image_cache;
-import 'package:sky/mojo/shell.dart' as shell;
+import 'package:sky/src/services/fetch.dart';
+import 'package:sky/src/services/image_cache.dart';
+import 'package:sky/src/services/image_resource.dart';
+import 'package:sky/src/services/shell.dart';
 
 abstract class AssetBundle {
   void close();
@@ -34,7 +34,7 @@ class NetworkAssetBundle extends AssetBundle {
     return (await fetchUrl(_urlFromKey(key))).body;
   }
 
-  ImageResource loadImage(String key) => image_cache.load(_urlFromKey(key));
+  ImageResource loadImage(String key) => imageCache.load(_urlFromKey(key));
 
   Future<String> loadString(String key) => fetchString(_urlFromKey(key));
 }

packages/flutter/lib/src/services/fetch.dart

@@ -10,7 +10,7 @@ import 'package:mojo/mojo/url_request.mojom.dart';
 import 'package:mojo/mojo/url_response.mojom.dart';
 import 'package:mojo_services/mojo/network_service.mojom.dart';
 import 'package:mojo_services/mojo/url_loader.mojom.dart';
-import 'package:sky/mojo/shell.dart' as shell;
+import 'package:sky/src/services/shell.dart';
 
 export 'package:mojo/mojo/url_response.mojom.dart' show UrlResponse;
 

packages/flutter/lib/src/services/image_cache.dart

@@ -0,0 +1,34 @@
+// 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 'dart:async';
+import 'dart:collection';
+import 'dart:sky' as sky;
+
+import 'package:mojo/mojo/url_response.mojom.dart';
+import 'package:sky/src/services/image_resource.dart';
+import 'package:sky/src/services/fetch.dart';
+
+class _ImageCache {
+  _ImageCache._();
+
+  final HashMap<String, ImageResource> _cache = new Map<String, ImageResource>();
+
+  ImageResource load(String url) {
+    return _cache.putIfAbsent(url, () {
+      Completer<sky.Image> completer = new Completer<sky.Image>();
+      fetchUrl(url).then((UrlResponse response) {
+        if (response.statusCode >= 400) {
+          print("Failed (${response.statusCode}) to load image ${url}");
+          completer.complete(null);
+        } else {
+          new sky.ImageDecoder(response.body.handle.h, completer.complete);
+        }
+      });
+      return new ImageResource(completer.future);
+    });
+  }
+}
+
+final _ImageCache imageCache = new _ImageCache._();

packages/flutter/lib/src/services/keyboard.dart

@@ -3,7 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:mojo_services/keyboard/keyboard.mojom.dart';
-import 'package:sky/mojo/shell.dart' as shell;
+import 'package:sky/src/services/shell.dart';
+
 export 'package:mojo_services/keyboard/keyboard.mojom.dart';
 
 class _KeyboardConnection {

packages/flutter/lib/src/services/shell.dart

@@ -7,7 +7,7 @@ import 'dart:sky.internals' as internals;
 import 'package:mojo/application.dart';
 import 'package:mojo/core.dart' as core;
 import 'package:mojo/mojo/service_provider.mojom.dart';
-import 'package:sky/mojo/embedder.dart';
+import 'package:sky/src/services/embedder.dart';
 
 ApplicationConnection _initConnection() {
   int rawHandle = internals.takeServicesProvidedByEmbedder();
@@ -18,9 +18,15 @@ ApplicationConnection _initConnection() {
   return new ApplicationConnection(null, serviceProvider);
 }
 
-final ApplicationConnection _connection = _initConnection();
+class _ShellImpl {
+  _ShellImpl._();
 
-void requestService(String url, Object proxy) {
-  if (embedder.shell == null) _connection.requestService(proxy);
-  else embedder.connectToService(url, proxy);
+  final ApplicationConnection _connection = _initConnection();
+
+  void requestService(String url, Object proxy) {
+    if (embedder.shell == null) _connection.requestService(proxy);
+    else embedder.connectToService(url, proxy);
+  }
 }
+
+final _ShellImpl shell = new _ShellImpl._();

packages/flutter/lib/src/widgets/basic.dart

@@ -6,9 +6,7 @@ import 'dart:sky' as sky;
 
 import 'package:vector_math/vector_math.dart';
 
-import 'package:sky/mojo/asset_bundle.dart';
-import 'package:sky/mojo/image_resource.dart';
-import 'package:sky/mojo/net/image_cache.dart' as image_cache;
+import 'package:sky/services.dart';
 import 'package:sky/src/painting/text_painter.dart';
 import 'package:sky/src/painting/text_style.dart';
 import 'package:sky/src/rendering/block.dart';
@@ -838,7 +836,7 @@ class NetworkImage extends Component {
 
   Widget build() {
     return new ImageListener(
-      image: image_cache.load(src),
+      image: imageCache.load(src),
       width: width,
       height: height,
       colorFilter: colorFilter,

packages/flutter/lib/src/widgets/date_picker.dart

@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'package:intl/date_symbols.dart';
 import 'package:intl/intl.dart';
-import 'package:sky/mojo/activity.dart';
+import 'package:sky/services.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/theme/typography.dart' as typography;
 import 'package:sky/src/widgets/basic.dart';

packages/flutter/lib/src/widgets/framework.dart

@@ -7,7 +7,7 @@ import 'dart:collection';
 import 'dart:sky' as sky;
 
 import 'package:sky/animation.dart';
-import 'package:sky/mojo/activity.dart';
+import 'package:sky/services.dart';
 import 'package:sky/src/rendering/box.dart';
 import 'package:sky/src/rendering/error.dart';
 import 'package:sky/src/rendering/hit_test.dart';

packages/flutter/lib/src/widgets/icon.dart

@@ -4,7 +4,7 @@
 
 import 'dart:sky' as sky;
 
-import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/services.dart';
 import 'package:sky/src/widgets/basic.dart';
 import 'package:sky/src/widgets/theme.dart';
 import 'package:sky/src/widgets/framework.dart';

packages/flutter/lib/src/widgets/input.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:sky/mojo/keyboard.dart';
+import 'package:sky/services.dart';
 import 'package:sky/painting.dart';
 import 'package:sky/src/widgets/basic.dart';
 import 'package:sky/src/widgets/editable_text.dart';
@@ -10,7 +10,7 @@ import 'package:sky/src/widgets/focus.dart';
 import 'package:sky/src/widgets/framework.dart';
 import 'package:sky/src/widgets/theme.dart';
 
-export 'package:sky/mojo/keyboard.dart' show KeyboardType_TEXT, KeyboardType_NUMBER, KeyboardType_PHONE, KeyboardType_DATETIME;
+export 'package:sky/services.dart' show KeyboardType_TEXT, KeyboardType_NUMBER, KeyboardType_PHONE, KeyboardType_DATETIME;
 
 typedef void StringValueChanged(String value);
 

packages/flutter/lib/src/widgets/title.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:sky/mojo/activity.dart';
+import 'package:sky/services.dart';
 import 'package:sky/src/widgets/theme.dart';
 import 'package:sky/src/widgets/framework.dart';
 

packages/flutter_sprites/lib/skysprites.dart

@@ -12,9 +12,8 @@ import 'dart:sky';
 
 import 'package:mojo/core.dart';
 import 'package:sky/animation.dart';
-import 'package:sky/mojo/asset_bundle.dart';
-import 'package:sky/mojo/shell.dart' as shell;
 import 'package:sky/painting.dart';
+import 'package:sky/services.dart';
 import 'package:sky/src/rendering/box.dart';
 import 'package:sky/src/rendering/object.dart';
 import 'package:sky/src/widgets/framework.dart';

packages/flutter_sprites/pubspec.yaml

@@ -6,3 +6,6 @@ homepage: https://github.com/domokit/sky_engine/tree/master/sky/packages/sky
 dependencies:
   sky: ">=0.0.36 < 0.1.0"
   sky_tools: ">=0.0.10 < 0.1.0"
+dependency_overrides:
+  sky:
+    path: ../sky/packages/sky