Roll Observatory packages and add a roll script

packages/template_binding/test/utils.dart

+// Copyright (c) 2013, 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.
+
+library template_binding.test.utils;
+
+import 'dart:async';
+import 'dart:html';
+import 'package:observe/observe.dart';
+
+// Note: tests that import 'utils.dart' rely on the following line to make test
+// smaller for dart2js and prevent timeouts in the test bots.
+import 'package:observe/mirrors_used.dart';
+import 'package:template_binding/template_binding.dart';
+export 'package:observe/src/dirty_check.dart' show dirtyCheckZone;
+
+/// A small method to help readability. Used to cause the next "then" in a chain
+/// to happen in the next microtask:
+///
+///     future.then(endOfMicrotask).then(...)
+endOfMicrotask(_) => new Future.value();
+
+/// A small method to help readability. Used to cause the next "then" in a chain
+/// to happen in the next microtask, after a timer:
+///
+///     future.then(nextMicrotask).then(...)
+nextMicrotask(_) => new Future(() {});
+
+final bool parserHasNativeTemplate = () {
+  var div = new DivElement()..innerHtml = '<table><template>';
+  return div.firstChild.firstChild != null &&
+      div.firstChild.firstChild.tagName == 'TEMPLATE';
+}();
+
+recursivelySetTemplateModel(element, model, [delegate]) {
+  for (var node in element.queryAll('*')) {
+    if (isSemanticTemplate(node)) {
+      templateBind(node)
+          ..bindingDelegate = delegate
+          ..model = model;
+    }
+  }
+}
+
+dispatchEvent(type, target) {
+  target.dispatchEvent(new Event(type, cancelable: false));
+}
+
+class FooBarModel extends Observable {
+  @observable var foo;
+  @observable var bar;
+
+  FooBarModel([this.foo, this.bar]);
+}
+
+@reflectable
+class FooBarNotifyModel extends ChangeNotifier implements FooBarModel {
+  var _foo;
+  var _bar;
+
+  FooBarNotifyModel([this._foo, this._bar]);
+
+  get foo => _foo;
+  set foo(value) {
+    _foo = notifyPropertyChange(#foo, _foo, value);
+  }
+
+  get bar => _bar;
+  set bar(value) {
+    _bar = notifyPropertyChange(#bar, _bar, value);
+  }
+}
+
+DivElement testDiv;
+
+createTestHtml(s) {
+  var div = new DivElement();
+  div.setInnerHtml(s, treeSanitizer: new NullTreeSanitizer());
+  testDiv.append(div);
+
+  for (var node in div.querySelectorAll('*')) {
+    if (isSemanticTemplate(node)) TemplateBindExtension.decorate(node);
+  }
+
+  return div;
+}
+
+createShadowTestHtml(s) {
+  var div = new DivElement();
+  var root = div.createShadowRoot();
+  root.setInnerHtml(s, treeSanitizer: new NullTreeSanitizer());
+  testDiv.append(div);
+
+  for (var node in root.querySelectorAll('*')) {
+    if (isSemanticTemplate(node)) TemplateBindExtension.decorate(node);
+  }
+
+  return root;
+}
+
+/**
+ * Sanitizer which does nothing.
+ */
+class NullTreeSanitizer implements NodeTreeSanitizer {
+  void sanitizeTree(Node node) {}
+}
+
+clearAllTemplates(node) {
+  if (isSemanticTemplate(node)) {
+    templateBind(node).clear();
+  }
+  for (var child = node.firstChild; child != null; child = child.nextNode) {
+    clearAllTemplates(child);
+  }
+}