Remove code that requires whole-program compile

lib/runtime/messages_widget.dart

-// Copyright (c) 2015, 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.
-
-/// This library displays [MessageSummary]s from the Dart Dev Compiler.
-
-import 'dart:convert';
-import 'dart:html';
-
-import 'package:dev_compiler/src/summary.dart';
-import 'package:source_span/source_span.dart';
-
-main() async {
-  await window.animationFrame;
-  displayMessages(await HttpRequest.getString('messages.json'));
-}
-
-void displayMessages(String data) {
-  var summary = GlobalSummary.parse(JSON.decode(data));
-  var messagesByLevel = _getMessagesByLevel(summary);
-  if (messagesByLevel.isEmpty) return;
-
-  // Build the wrapper, menu, and content divs.
-  var menuWrapper = new DivElement()..classes.add('menu');
-  var contentWrapper = new DivElement()..classes.add('content');
-  var wrapperDiv = new DivElement()
-    ..classes.add('dev-compiler-messages')
-    ..append(menuWrapper)
-    ..append(contentWrapper);
-
-  var selectedMenu = new _Selection();
-  var selectedContent = new _Selection();
-
-  // Add a menu item, content section, and messages for each log level.
-  messagesByLevel.forEach((level, messages) {
-    var contentItem = new DivElement()..classes.add(level);
-    var menuItem = new Element.html('<div class="$level">'
-        '$level <span class="num">(${messages.length})</span>'
-        '</div>');
-    menuWrapper.append(menuItem);
-    contentWrapper.append(contentItem);
-    menuItem.onClick.listen((_) {
-      selectedMenu.select(menuItem);
-      selectedContent.select(contentItem);
-    });
-
-    // TODO(sigmund): add permanent links to error messages like in polymer.
-    for (var m in messages) {
-      var message = _hyperlinkUrls(_escape(m.message));
-      var span = m.span;
-      var sb = new StringBuffer();
-      sb.write('<div class="message"><div class="text $level">$message</div>');
-      if (span != null) {
-        sb.write('<div class="location">'
-            '  <span class="location">${span.start.toolString}</span></div>'
-            '  <span class="text">');
-        if (span is SourceSpanWithContext) {
-          sb.write(_escape(span.context.substring(0, span.start.column)));
-          sb.write('<span class="$level">');
-          sb.write(_escape(span.text));
-          sb.write('</span>');
-          var end = span.start.column + span.text.length;
-          sb.write(_escape(span.context.substring(end)));
-        } else {
-          sb.write(_escape(span.text));
-        }
-        sb.write('</span></div></div>');
-      }
-      sb.write('</div>');
-
-      var logElement = new Element.html('$sb',
-          validator: new NodeValidatorBuilder.common()
-            ..allowNavigation(new _OpenUriPolicy()));
-      contentItem.append(logElement);
-      var messageElement = logElement.querySelector('div.text');
-      messageElement.onClick.listen((e) {
-        if (e.target == messageElement) {
-          messageElement.classes.toggle('expanded');
-        }
-      });
-    }
-  });
-
-  document.body.append(wrapperDiv);
-}
-
-/// Toggles classes to match which item of a list of items is selected.
-class _Selection {
-  Element _selected;
-
-  select(Element newItem) {
-    if (_selected == newItem) {
-      _selected = null;
-    } else {
-      if (_selected != null) {
-        _selected.classes.remove('active');
-      }
-      _selected = newItem;
-    }
-    newItem.classes.toggle('active');
-  }
-}
-
-final _urlRegex = new RegExp('http://[^ ]*');
-final _escaper = new HtmlEscape();
-String _hyperlinkUrls(String text) => text.replaceAllMapped(_urlRegex,
-    (m) => '<a href="${m.group(0)}" target="blank">${m.group(0)}</a>');
-String _escape(String text) => _escaper.convert(text);
-
-class _OpenUriPolicy implements UriPolicy {
-  bool allowsUri(String uri) => true;
-}
-
-Map<String, List<MessageSummary>> _getMessagesByLevel(GlobalSummary messages) {
-  var visitor = new _Visitor();
-  messages.accept(visitor);
-  return visitor.messagesByLevel;
-}
-
-class _Visitor extends RecursiveSummaryVisitor {
-  final Map<String, List<MessageSummary>> messagesByLevel = {};
-
-  @override
-  void visitMessage(MessageSummary message) {
-    var level = message.level.toLowerCase();
-    messagesByLevel.putIfAbsent(level, () => []);
-    messagesByLevel[level].add(message);
-  }
-}