Display function signatures instead of just "Function".

client/lib/components/parameters.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 web.parameters;
 
 import 'dart:html';
 
 import 'package:polymer/polymer.dart';
 
 import 'package:dartdoc_viewer/item.dart';
 import 'package:dartdoc_viewer/member.dart';
 
+import 'closure.dart';
 import 'type.dart';
 
 @CustomTag("dartdoc-parameter")
 class ParameterElement extends DartdocElement {
   @published List<Parameter> parameters = const [];
 
+
+  factory ParameterElement() => new Element.tag('dartdoc-parameter');
+
   ParameterElement.created() : super.created();
 
   void parametersChanged() {
     var required = [], optional = [];
     if (parameters != null) {
       for (var p in parameters) {
         (p.isOptional ? optional : required).add(p);
       }
     }
 
@@ skipping 15 matching lines @@
       outerSpan.appendText(optionalOpeningDelimiter);
     }
     for (var element in elements) {
       // TODO(kevmoo): Fix annotation rendering for paramaters - Issue 18133
       // Skip dynamic as an outer parameter type (but not as generic)
       var space = '';
       if (!element.type.isDynamic) {
         outerSpan.append(new TypeElement()..type = element.type);
         space = ' ';
       }
-      var parameterName = new AnchorElement()
-        ..text = element.name
-        ..href = element.prefixedAnchorHref
-        ..id = element.anchorHrefLocation.anchor;
+
       outerSpan.appendText(space);
-      outerSpan.append(parameterName);
+      if (element.functionDeclaration != null) {
+        outerSpan.append(
+            new ClosureElement()..closure = element.functionDeclaration);
+      } else {
+        var parameterName = new AnchorElement()
+          ..text = element.name
+          ..href = element.prefixedAnchorHref
+          ..id = element.anchorHrefLocation.anchor;
+
+        outerSpan.append(parameterName);
+      }
       outerSpan.appendText(element.decoration);
+
       if (className == 'required' && optional.isNotEmpty ||
           element != elements.last) {
         outerSpan.appendText(', ');
       }
     }
     if (className == 'optional') {
       var optionalClosingDelimiter =
           optional.isEmpty ? '' : optional.first.isNamed ? '}' : ']';
       outerSpan.appendText(optionalClosingDelimiter);
     }
     this.append(outerSpan);
   }
-}
+}