Suppress generation of JsGlobal and JsType code and use window as the default value instead of {} f…

test/codegen/dom.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+@JsName(name: 'window')
 library dom;
 
-class JsType {
-  /// The JavaScript constructor function name.
-  /// Used for construction and instanceof checks.
+
+class JsName {
+  /// The JavaScript name.
+  /// Used for classes and libraries.
   /// Note that this could be an expression, e.g. `lib.TypeName` in JS, but it
   /// should be kept simple, as it will be generated directly into the code.
   final String name;
-  const JsType({this.name});
-}
-class JsGlobal {
-  const JsGlobal();
+  const JsName({this.name});
 }
 class Overload {
   const Overload();
 }
 const overload = const Overload();
 
-@JsGlobal()
-final Document document = null;
+external Document get document;
 
-@JsType(name: 'Document')
+@JsName(name: 'Document')
 abstract class Document {
   Element querySelector(String selector);
 }
 
-@JsType(name: 'Element')
+@JsName(name: 'Element')
 abstract class Element {
   void addEventListener(String type, EventListener callback, [bool capture]);
   String textContent;
 }
 
 typedef void EventListener(Event e);
 
 abstract class Event {}
 
-@JsType(name: 'HTMLInputElement')
+@JsName(name: 'HTMLInputElement')
 abstract class InputElement extends Element {
   String value;
 }
 
-@JsType(name: 'HTMLCanvasElement')
+@JsName(name: 'HTMLCanvasElement')
 abstract class CanvasElement extends Element {
   RenderingContext getContext(String contextId);
 }
 
 // TODO(jmesserly): union type of CanvasRenderingContext2D and
 // WebGLRenderingContext
 abstract class RenderingContext {}
 
 // http://www.w3.org/html/wg/drafts/2dcontext/html5_canvas_CR/
-@JsType()
+@JsName()
 abstract class CanvasRenderingContext2D
     implements CanvasDrawingStyles, CanvasPathMethods, RenderingContext {
 
   // back-reference to the canvas
   CanvasElement get canvas;
 
   // state
   void save(); // push state on state stack
   void restore(); // pop state stack and restore state
 
@@ skipping 95 matching lines @@
   void moveTo(num x, num y);
   void lineTo(num x, num y);
   void quadraticCurveTo(num cpx, num cpy, num x, num y);
   void bezierCurveTo(num cp1x, num cp1y, num cp2x, num cp2y, num x, num y);
   void arcTo(num x1, num y1, num x2, num y2, num radius);
   void rect(num x, num y, num w, num h);
   void arc(num x, num y, num radius, num startAngle, num endAngle,
       [bool anticlockwise]);
 }
 
-@JsType()
+@JsName()
 abstract class CanvasGradient {
   // opaque object
   void addColorStop(num offset, String color);
 }
 
-@JsType()
+@JsName()
 abstract class CanvasPattern {
   // opaque object
 }
 
-@JsType()
+@JsName()
 abstract class TextMetrics {
   num get width;
 }
 
-@JsType()
+@JsName()
 abstract class ImageData {
   int get width;
   int get height;
   // TODO: readonly Uint8ClampedArray data;
 }