Added a lot more documentation to Window.

sdk/lib/html/src/CrossFrameTypes.dart

 // Copyright (c) 2012, 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.
 
 part of html;
 
 /**
  * An object representing the top-level context object for web scripting.
  *
  * In a web browser, a [Window] object represents the actual browser window.
  * In a multi-tabbed browser, each tab has its own [Window] object. A [Window]
  * is the container that displays a [Document]'s content. All web scripting
  * happens within the context of a [Window] object.
  *
  * **Note:** This class represents any window, whereas [LocalWindow] is
  * used to access the properties and content of the current window.
  *
  * See also:
  *
  * * [DOM Window](https://developer.mozilla.org/en-US/docs/DOM/window) from MDN.
  * * [Window](http://www.w3.org/TR/Window/) from the W3C.
  */
 abstract class Window {
   // Fields.
+
+  /**
+   * The current location of this window.
+   *
+   *     Location currentLocation = window.location;
+   *     print(currentLocation.href); // 'http://www.example.com:80/'
+   */
   Location get location;
   History get history;
 
+  /**
+   * Indicates whether this window is closed.
+   *
+   *     print(window.closed); // 'false'
+   *     window.close();
+   *     print(window.closed); // 'true'
+   */
   bool get closed;
+
+  /**
+   * A reference to the [Window] that opened this one.

[Kathy Walrath, 2012/11/20 01:51:24]

Again, [Window] -> window. (I'm not sure whether x-refs in summaries will be
supported, and they seem questionable in general -- better to make the summary
as simple as possible.)

[Andrei Mouravski, 2012/11/20 06:28:47]

Done.

+   *
+   *     Window thisWindow = window;
+   *     Window otherWindow = thisWindow.open('http://www.example.com/', 'foo');
+   *     print(otherWindow.opener == thisWindow); // 'true'
+   */
   Window get opener;
+
+  /**
+   * A reference to the parent of this window.
+   *
+   * If this [Window] has no parent, [parent] will return a reference to
+   * the [Window] itself.
+   *
+   *     IFrameElement myIFrame = new IFrameElement();
+   *     window.document.body.elements.add(myIFrame);
+   *     print(myIframe.contentWindow.parent == window) // 'true'
+   *
+   *     print(window.parent == window) // 'true'
+   */
   Window get parent;
+
+  /**
+   * A reference to the topmost window in the window heirarchy.

[Kathy Walrath, 2012/11/20 01:51:24]

heirarchy -> hierarchy 

(Tough word to spell. I had to look it up to be sure!)

+   *
+   * If this [Window] is the topmost [Window], [top] will return a reference to
+   * the [Window] itself.
+   *
+   *     // Add an IFrame to the current window.
+   *     IFrameElement myIFrame = new IFrameElement();
+   *     window.document.body.elements.add(myIFrame);
+   *
+   *     // Add an IFrame inside of the other IFrame.
+   *     IFrameElement innerIFrame = new IFrameElement();
+   *     myIFrame.elements.add(innerIFrame);
+   *
+   *     print(myIframe.contentWindow.top == window) // 'true'
+   *     print(innerIFrame.contentWindow.top == window) // 'true'
+   *
+   *     print(window.top == window) // 'true'
+   */
   Window get top;
 
   // Methods.
   void focus();
   void blur();
   void close();
   void postMessage(var message, String targetOrigin, [List messagePorts = null]);
 }
 
 abstract class Location {
   void set href(String val);
 }
 
 abstract class History {
   void back();
   void forward();
   void go(int distance);
 }