Revert "Build Observatory with runtime"

runtime/observatory/lib/src/elements/class_tree.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 class_tree_element;
-
-import 'observatory_element.dart';
-import 'dart:html';
-import 'package:logging/logging.dart';
-import 'package:observatory/app.dart';
-import 'package:observatory/service.dart';
-import 'package:polymer/polymer.dart';
-
-class ClassTreeRow extends TableTreeRow {
-  @reflectable final Isolate isolate;
-  @reflectable final Class cls;
-  ClassTreeRow(this.isolate, this.cls, ClassTreeRow parent) : super(parent) {
-    assert(isolate != null);
-    assert(cls != null);
-  }
-
-  void onShow() {
-    if (children.length > 0) {
-      // Child rows already created.
-      return;
-    }
-    for (var subclass in cls.subclasses) {
-      if (subclass.isPatch) {
-        continue;
-      }
-      var row = new ClassTreeRow(isolate, subclass, this);
-      children.add(row);
-    }
-  }
-
-  void onHide() {
-  }
-
-  bool hasChildren() {
-    return cls.subclasses.length > 0;
-  }
-}
-
-
-@CustomTag('class-tree')
-class ClassTreeElement extends ObservatoryElement {
-  @observable Isolate isolate;
-
-  TableTree tree;
-
-  ClassTreeElement.created() : super.created();
-
-  @override
-  void attached() {
-    super.attached();
-    tree = new TableTree();
-    if (isolate != null) {
-      _update(isolate.objectClass);
-    }
-  }
-
-  isolateChanged(oldValue) {
-    isolate.getClassHierarchy().then((objectClass) {
-      _update(objectClass);
-    });
-  }
-
-  void _update(Class root) {
-    try {
-      var rootRow = new ClassTreeRow(isolate, root, null);
-      rootRow.children.add(new ClassTreeRow(isolate, root, rootRow));
-      tree.initialize(rootRow);
-    } catch (e, stackTrace) {
-      Logger.root.warning('_update', e, stackTrace);
-    }
-    // Check if we only have one node at the root and expand it.
-    if (tree.rows.length == 1) {
-      tree.toggle(0);
-    }
-    notifyPropertyChange(#tree, null, tree);
-  }
-
-  @observable String padding(TableTreeRow row) {
-    return 'padding-left: ${row.depth * 16}px;';
-  }
-
-  @observable String coloring(TableTreeRow row) {
-    const colors = const ['rowColor0', 'rowColor1', 'rowColor2', 'rowColor3',
-                          'rowColor4', 'rowColor5', 'rowColor6', 'rowColor7',
-                          'rowColor8'];
-    var index = (row.depth - 1) % colors.length;
-    return colors[index];
-  }
-
-  @observable void toggleExpanded(Event e, var detail, Element target) {
-    // We only want to expand a tree row if the target of the click is
-    // the table cell (passed in as target) or the span containing the
-    // expander symbol (#expand).
-    var eventTarget = e.target;
-    if ((eventTarget.id != 'expand') && (e.target != target)) {
-      // Target of click was not the expander span or the table cell.
-      return;
-    }
-    var row = target.parent;
-    if (row is TableRowElement) {
-      try {
-        // Subtract 1 to get 0 based indexing.
-        tree.toggle(row.rowIndex - 1);
-      }  catch (e, stackTrace) {
-        Logger.root.warning('toggleExpanded', e, stackTrace);
-      }
-    }
-  }
-
-}