Dynamic host and port in vm-connect element

runtime/observatory/lib/src/elements/vm_connect.dart

 // Copyright (c) 2014, 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 vm_connect_element;
 
 import 'dart:html';
 import 'dart:async';
 import 'dart:convert';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/nav/bar.dart';
 import 'package:observatory/src/elements/nav/notify.dart';
 import 'package:observatory/src/elements/nav/top_menu.dart';
 import 'package:observatory/src/elements/view_footer.dart';
 import 'package:observatory/src/elements/vm_connect_target.dart';
 
-class VMConnectElement extends HtmlElement implements Renderable{
+class VMConnectElement extends HtmlElement implements Renderable {
   static const tag = const Tag<VMConnectElement>('vm-connect',
                      dependencies: const [NavBarElement.tag,
                                           NavTopMenuElement.tag,
                                           NavNotifyElement.tag,
                                           ViewFooterElement.tag,
                                           VMConnectTargetElement.tag]);
 
   RenderingScheduler _r;
 
   Stream<RenderedEvent<VMConnectElement>> get onRendered => _r.onRendered;
@@ skipping 30 matching lines @@
     _targetsSubscription = _targets.onChange.listen((_) => _r.dirty());
   }
 
   @override
   void detached() {
     super.detached(); children = []; _r.disable(notify: true);
     _targetsSubscription.cancel(); _targetsSubscription = null;
   }
 
   void render() {
+    final host = window.location.hostname;
+    final port = window.location.port;
     children = [
       new NavBarElement(queue: _r.queue)
         ..children = [
           new NavTopMenuElement(last: true, queue: _r.queue),
           new NavNotifyElement(_notifications, queue: _r.queue)
         ],
       new DivElement()
         ..classes = ['content-centered']
         ..children = [
           new HeadingElement.h1()..text = 'Connect to a Dart VM',
@@ skipping 38 matching lines @@
               new DivElement()
                 ..classes = ['flex-item-40-percent']
                 ..children = [
                   new HeadingElement.h2()..text = 'Crash dump',
                   new BRElement(),
                   _createCrushDumpLoader(),
                   new BRElement(), new BRElement(),
                   new PreElement()
                     ..classes = ['well']
                     ..text = 'Request a crash dump with:\n'
-                      '\'curl localhost:8181/_getCrashDump > dump.json\'',
+                      '\'curl $host:$port/_getCrashDump > dump.json\'',
                   new HRElement()
                 ]
             ],
         ],
       new ViewFooterElement(queue: _r.queue)
     ];
   }
 
   TextInputElement _createAddressBox() {
     var textbox = new TextInputElement()
@@ skipping 29 matching lines @@
   void _connect(TargetEvent e) => _targets.setCurrent(e.target);
   void _delete(TargetEvent e) => _targets.delete(e.target);
 
   static String _normalizeStandaloneAddress(String networkAddress) {
     if (networkAddress.startsWith('ws://')) {
       return networkAddress;
     }
     return 'ws://${networkAddress}/ws';
   }
 }