| // 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:async'; |
| 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, TableTree tree, ClassTreeRow parent) |
| : super(tree, parent) { |
| assert(isolate != null); |
| assert(cls != null); |
| } |
| |
| void _addChildren(List<Class> subclasses) { |
| for (var subclass in subclasses) { |
| if (subclass.isPatch) { |
| continue; |
| } |
| if (subclass.mixin != null) { |
| _addChildren(subclass.subclasses); |
| } else { |
| var row = new ClassTreeRow(isolate, subclass, tree, this); |
| children.add(row); |
| } |
| } |
| } |
| |
| Future _addMixins(Class cls) async { |
| var classCell = flexColumns[0]; |
| if (cls.superclass == null) { |
| return; |
| } |
| bool first = true; |
| while (cls.superclass != null && cls.superclass.mixin != null) { |
| cls = cls.superclass; |
| await cls.mixin.load(); |
| var span = new SpanElement(); |
| span.style.alignSelf = 'center'; |
| span.style.whiteSpace = 'pre'; |
| if (first) { |
| span.text = ' with '; |
| } else { |
| span.text = ', '; |
| } |
| classCell.children.add(span); |
| var mixinRef = new Element.tag('class-ref'); |
| mixinRef.ref = cls.mixin.typeClass; |
| mixinRef.style.alignSelf = 'center'; |
| classCell.children.add(mixinRef); |
| first = false; |
| } |
| } |
| |
| Future _addClass(Class cls) async { |
| var classCell = flexColumns[0]; |
| classCell.style.justifyContent = 'flex-start'; |
| var classRef = new Element.tag('class-ref'); |
| classRef.ref = cls; |
| classRef.style.alignSelf = 'center'; |
| classCell.children.add(classRef); |
| if (cls.superclass != null && cls.superclass.mixin != null) { |
| await _addMixins(cls); |
| } |
| if (cls.subclasses.isNotEmpty) { |
| var span = new SpanElement(); |
| span.style.paddingLeft = '.5em'; |
| span.style.alignSelf = 'center'; |
| int subclassCount = _indirectSubclassCount(cls) - 1; |
| if (subclassCount > 1) { |
| span.text = '($subclassCount subclasses)'; |
| } else { |
| span.text = '($subclassCount subclass)'; |
| } |
| classCell.children.add(span); |
| } |
| } |
| |
| void onShow() { |
| super.onShow(); |
| if (children.length == 0) { |
| _addChildren(cls.subclasses); |
| } |
| _addClass(cls); |
| } |
| |
| static int _indirectSubclassCount(var cls) { |
| int count = 0; |
| if (cls.mixin == null) { |
| // Don't count synthetic mixin classes in subclass count. |
| count++; |
| } |
| for (var subclass in cls.subclasses) { |
| count += _indirectSubclassCount(subclass); |
| } |
| return count; |
| } |
| |
| bool hasChildren() { |
| return cls.subclasses.isNotEmpty; |
| } |
| } |
| |
| |
| @CustomTag('class-tree') |
| class ClassTreeElement extends ObservatoryElement { |
| @observable Isolate isolate; |
| |
| TableTree tree; |
| |
| ClassTreeElement.created() : super.created(); |
| |
| @override |
| void attached() { |
| super.attached(); |
| var tableBody = shadowRoot.querySelector('#tableTreeBody'); |
| assert(tableBody != null); |
| tree = new TableTree(tableBody, 1); |
| 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, tree, null); |
| rootRow.children.add(new ClassTreeRow(isolate, root, tree, 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(tree.rows[0]); |
| } |
| notifyPropertyChange(#tree, null, tree); |
| } |
| } |