| // Copyright (c) 2016, 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. |
| |
| import 'dart:html'; |
| import 'dart:async'; |
| import 'package:observatory/models.dart' as M; |
| import 'package:observatory/src/elements/curly_block.dart'; |
| import 'package:observatory/src/elements/instance_ref.dart'; |
| import 'package:observatory/src/elements/helpers/any_ref.dart'; |
| import 'package:observatory/src/elements/helpers/rendering_scheduler.dart'; |
| import 'package:observatory/src/elements/helpers/tag.dart'; |
| |
| class RetainingPathElement extends HtmlElement implements Renderable { |
| static const tag = const Tag<RetainingPathElement>('retaining-path', |
| dependencies: const [CurlyBlockElement.tag, InstanceRefElement.tag]); |
| |
| RenderingScheduler<RetainingPathElement> _r; |
| |
| Stream<RenderedEvent<RetainingPathElement>> get onRendered => _r.onRendered; |
| |
| M.IsolateRef _isolate; |
| M.ObjectRef _object; |
| M.RetainingPathRepository _retainingPaths; |
| M.InstanceRepository _instances; |
| M.RetainingPath _path; |
| bool _expanded = false; |
| |
| M.IsolateRef get isolate => _isolate; |
| M.ObjectRef get object => _object; |
| |
| factory RetainingPathElement(M.IsolateRef isolate, M.ObjectRef object, |
| M.RetainingPathRepository retainingPaths, M.InstanceRepository instances, |
| {RenderingQueue queue}) { |
| assert(isolate != null); |
| assert(object != null); |
| assert(retainingPaths != null); |
| assert(instances != null); |
| RetainingPathElement e = document.createElement(tag.name); |
| e._r = new RenderingScheduler(e, queue: queue); |
| e._isolate = isolate; |
| e._object = object; |
| e._retainingPaths = retainingPaths; |
| e._instances = instances; |
| return e; |
| } |
| |
| RetainingPathElement.created() : super.created(); |
| |
| @override |
| void attached() { |
| super.attached(); |
| _r.enable(); |
| } |
| |
| @override |
| void detached() { |
| super.detached(); |
| children = []; |
| _r.disable(notify: true); |
| } |
| |
| void render() { |
| children = [ |
| new CurlyBlockElement(expanded: _expanded, queue: _r.queue) |
| ..content = _createContent() |
| ..onToggle.listen((e) async { |
| _expanded = e.control.expanded; |
| if (_expanded) { |
| e.control.disabled = true; |
| await _refresh(); |
| e.control.disabled = false; |
| } |
| }) |
| ]; |
| } |
| |
| Future _refresh() async { |
| _path = null; |
| _path = await _retainingPaths.get(_isolate, _object.id); |
| _r.dirty(); |
| } |
| |
| List<Element> _createContent() { |
| if (_path == null) { |
| return [new SpanElement()..text = 'Loading']; |
| } |
| return _path.elements.map(_createItem).toList(); |
| } |
| |
| Element _createItem(M.RetainingPathItem item) { |
| final content = <Element>[]; |
| |
| if (item.parentField != null) { |
| content.add(new SpanElement() |
| ..children = [ |
| new SpanElement()..text = 'from ', |
| anyRef(_isolate, item.parentField, _instances, queue: _r.queue), |
| new SpanElement()..text = ' of ', |
| ]); |
| } else if (item.parentListIndex != null) { |
| content.add( |
| new SpanElement()..text = 'from [ ${item.parentListIndex} ] of '); |
| } else if (item.parentWordOffset != null) { |
| content.add(new SpanElement() |
| ..text = 'from word [ ${item.parentWordOffset} ] of '); |
| } else { |
| content.add(new SpanElement()..text = 'from '); |
| } |
| |
| content.add(anyRef(_isolate, item.source, _instances, queue: _r.queue)); |
| |
| return new DivElement() |
| ..classes = ['indent'] |
| ..children = content; |
| } |
| } |