Improve script display in the observatory.

runtime/bin/vmservice/client/lib/src/elements/observatory_element.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 observatory_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/app.dart';
 import 'package:polymer/polymer.dart';
 
 /// Base class for all Observatory custom elements.
 @CustomTag('observatory-element')
 class ObservatoryElement extends PolymerElement {
   ObservatoryElement.created() : super.created();
 
   ObservatoryApplication get app => ObservatoryApplication.app;
+  @published ObservableMap args;

[Cutch, 2014/07/09 15:49:22]

I wonder if this is the best way to pass args to elements. Would it be nicer if
each element had a reference to its pane and could grab the args from the pane?

[turnidge, 2014/07/09 17:37:08]

Reworked.

 
   @override
   void attached() {
     super.attached();
     _startPoll();
   }
 
   @override
   void attributeChanged(String name, var oldValue, var newValue) {
     super.attributeChanged(name, oldValue, newValue);
@@ skipping 127 matching lines @@
               'Bool',
               'String',
               'Double',
               'Instance',
               'GrowableObjectArray',
               'Array',
               'Type',
               'Error'].contains(type));
   }
 }