Combine window.setTimeout/setInterval with Timer and Timer.repeating. Also

tools/dom/templates/html/dart2js/impl_Window.darttemplate

-// 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 $LIBRARYNAME;
-
-$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS native "@*DOMWindow" {
-
-  Document get document => JS('Document', '#.document', this);
-
-  WindowBase _open2(url, name) => JS('Window', '#.open(#,#)', this, url, name);
-
-  WindowBase _open3(url, name, options) =>
-      JS('Window', '#.open(#,#,#)', this, url, name, options);
-
-  WindowBase open(String url, String name, [String options]) {
-    if (options == null) {
-      return _DOMWindowCrossFrame._createSafe(_open2(url, name));
-    } else {
-      return _DOMWindowCrossFrame._createSafe(_open3(url, name, options));
-    }
-  }
-
-  // API level getter and setter for Location.
-  // TODO: The cross domain safe wrapper can be inserted here or folded into
-  // _LocationWrapper.
-  Location get location {
-    // Firefox work-around for Location.  The Firefox location object cannot be
-    // made to behave like a Dart object so must be wrapped.
-    var result = _location;
-    if (_isDartLocation(result)) return result;  // e.g. on Chrome.
-    if (null == _location_wrapper) {
-      _location_wrapper = new _LocationWrapper(result);
-    }
-    return _location_wrapper;
-  }
-
-  // TODO: consider forcing users to do: window.location.assign('string').
-  /**
-   * Sets the window's location, which causes the browser to navigate to the new
-   * location. [value] may be a Location object or a string.
-   */
-  void set location(value) {
-    if (value is _LocationWrapper) {
-      _location = value._ptr;
-    } else {
-      _location = value;
-    }
-  }
-
-  _LocationWrapper _location_wrapper;  // Cached wrapped Location object.
-
-  // Native getter and setter to access raw Location object.
-  dynamic get _location => JS('Location|=Object', '#.location', this);
-  void set _location(value) {
-    JS('void', '#.location = #', this, value);
-  }
-  // Prevent compiled from thinking 'location' property is available for a Dart
-  // member.
-  @JSName('location')
-  _protect_location() native;
-
-  static _isDartLocation(thing) {
-    // On Firefox the code that implements 'is Location' fails to find the patch
-    // stub on Object.prototype and throws an exception.
-    try {
-      return thing is Location;
-    } catch (e) {
-      return false;
-    }
-  }
-
-  /**
-   * Executes a [callback] after the immediate execution stack has completed.
-   *
-   * This will cause the callback to be executed after all processing has
-   * completed for the current event, but before any subsequent events.
-   */
-  void setImmediate(TimeoutHandler callback) {
-    _addMicrotaskCallback(callback);
-  }
-
-  @DomName('DOMWindow.requestAnimationFrame')
-  int requestAnimationFrame(RequestAnimationFrameCallback callback) {
-    _ensureRequestAnimationFrame();
-    return _requestAnimationFrame(callback);
-  }
-
-  void cancelAnimationFrame(id) {
-    _ensureRequestAnimationFrame();
-    _cancelAnimationFrame(id);
-  }
-
-  @JSName('requestAnimationFrame')
-  int _requestAnimationFrame(RequestAnimationFrameCallback callback) native;
-
-  @JSName('cancelAnimationFrame')
-  void _cancelAnimationFrame(int id) native;
-
-  _ensureRequestAnimationFrame() {
-    if (JS('bool',
-           '!!(#.requestAnimationFrame && #.cancelAnimationFrame)', this, this))
-      return;
-
-    JS('void',
-       r"""
-  (function($this) {
-   var vendors = ['ms', 'moz', 'webkit', 'o'];
-   for (var i = 0; i < vendors.length && !$this.requestAnimationFrame; ++i) {
-     $this.requestAnimationFrame = $this[vendors[i] + 'RequestAnimationFrame'];
-     $this.cancelAnimationFrame =
-         $this[vendors[i]+'CancelAnimationFrame'] ||
-         $this[vendors[i]+'CancelRequestAnimationFrame'];
-   }
-   if ($this.requestAnimationFrame && $this.cancelAnimationFrame) return;
-   $this.requestAnimationFrame = function(callback) {
-      return window.setTimeout(function() {
-        callback(Date.now());
-      }, 16 /* 16ms ~= 60fps */);
-   };
-   $this.cancelAnimationFrame = function(id) { clearTimeout(id); }
-  })(#)""",
-       this);
-  }
-
-  /**
-   * Gets an instance of the Indexed DB factory to being using Indexed DB.
-   *
-   * Use [IdbFactory.supported] to check if Indexed DB is supported on the
-   * current platform.
-   */
-  @SupportedBrowser(SupportedBrowser.CHROME, '23.0')
-  @SupportedBrowser(SupportedBrowser.FIREFOX, '15.0')
-  @SupportedBrowser(SupportedBrowser.IE, '10.0')
-  @Experimental
-  IdbFactory get indexedDB =>
-      JS('IdbFactory',
-         '#.indexedDB || #.webkitIndexedDB || #.mozIndexedDB',
-         this, this, this);
-
-  /**
-   * Lookup a port by its [name].  Return null if no port is
-   * registered under [name].
-   */
-  SendPortSync lookupPort(String name) {
-    var port = json.parse(document.documentElement.attributes['dart-port:$name']);
-    return _deserialize(port);
-  }
-
-  /**
-   * Register a [port] on this window under the given [name].  This
-   * port may be retrieved by any isolate (or JavaScript script)
-   * running in this window.
-   */
-  void registerPort(String name, var port) {
-    var serialized = _serialize(port);
-    document.documentElement.attributes['dart-port:$name'] = json.stringify(serialized);
-  }
-
-  @DomName('Window.console')
-  Console get console => Console.safeConsole;
-
-  /// Checks if _setImmediate is supported.
-  static bool get _supportsSetImmediate =>
-      JS('bool', '!!(window.setImmediate)');
-
-  // Set immediate implementation for IE
-  void _setImmediate(void callback()) {
-    JS('void', '#.setImmediate(#)', this, convertDartClosureToJS(callback, 0));
-  }
-
-$!MEMBERS
-}