Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/introspection.dart

+part of angular;
+
+/**
+ * A global write only variable which keeps track of objects attached to the elements.
+ * This is usefull for debugging AngularDart application from the browser's REPL.
+ */
+Expando _elementExpando = new Expando('element');
+
+/**
+ * Return the closest [ElementProbe] object for a given [Element].
+ *
+ * NOTE: This global method is here to make it easier to debug Angular application from
+ *       the browser's REPL, unit or end-to-end tests. The function is not intended to
+ *       be called from Angular application.
+ */
+ElementProbe ngProbe(dom.Node node) {
+  while(node != null) {
+    var probe = _elementExpando[node];
+    if (probe != null) return probe;
+    node = node.parent;
+  }
+  return null;
+}
+
+
+/**
+ * Return the [Injector] associated with a current [Element].
+ *
+ * **NOTE**: This global method is here to make it easier to debug Angular application from
+ * the browser's REPL, unit or end-to-end tests. The function is not intended to be called
+ * from Angular application.
+ */
+Injector ngInjector(dom.Node node) => ngProbe(node).injector;
+
+
+/**
+ * Return the [Scope] associated with a current [Element].
+ *
+ * **NOTE**: This global method is here to make it easier to debug Angular application from
+ * the browser's REPL, unit or end-to-end tests. The function is not intended to be called
+ * from Angular application.
+ */
+Scope ngScope(dom.Node node) => ngProbe(node).scope;
+
+
+List<dom.Element> ngQuery(dom.Node element, String selector, [String containsText]) {
+  var list = [];
+  var children = [element];
+  while (!children.isEmpty) {
+    var child = children.removeAt(0);
+    child.querySelectorAll(selector).forEach((e) {
+      if (containsText == null || e.text.contains(containsText)) list.add(e);
+    });
+    child.querySelectorAll('*').forEach((e) {
+      if (e.shadowRoot != null) children.add(e.shadowRoot);
+    });
+  }
+  return list;
+}
+
+/**
+ * Return a List of directive controllers associated with a current [Element].
+ *
+ * **NOTE**: This global method is here to make it easier to debug Angular application from
+ * the browser's REPL, unit or end-to-end tests. The function is not intended to be called
+ * from Angular application.
+ */
+List<Object> ngDirectives(dom.Node node) {
+  ElementProbe probe = _elementExpando[node];
+  return probe == null ? [] : probe.directives;
+}
+
+_publishToJavaScript() {
+  js.context.ngProbe = (dom.Node node) => _jsProbe(ngProbe(node));
+  js.context.ngInjector = (dom.Node node) => _jsInjector(ngInjector(node));
+  js.context.ngScope = (dom.Node node) => _jsScope(ngScope(node));
+  js.context.ngQuery = (dom.Node node, String selector, [String containsText]) =>
+    new JsArray.from(ngQuery(node, selector, containsText));
+}
+
+JsObject _jsProbe(ElementProbe probe) {
+  return new JsObject.jsify({
+    "element": probe.element,
+    "injector": _jsInjector(probe.injector),
+    "scope": _jsScope(probe.scope),
+    "directives": probe.directives.map((directive) => _jsDirective(directive))
+  })..['_dart_'] = probe;
+}
+
+JsObject _jsInjector(Injector injector) {
+  return new JsObject.jsify({
+    "get": injector.get
+  })..['_dart_'] = injector;
+}
+
+JsObject _jsScope(Scope scope) {
+  return new JsObject.jsify({
+    "\$apply": scope.$apply,
+    "\$digest": scope.$digest,
+    "get": (name) => scope[name],
+    "set": (name, value) => scope[name] = value
+  })..['_dart_'] = scope;
+}
+
+_jsDirective(directive) => directive;