| // 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 StronglyReachableInstancesElement extends HtmlElement |
| implements Renderable { |
| static const tag = const Tag<StronglyReachableInstancesElement>( |
| 'strongly-reachable-instances', |
| dependencies: const [CurlyBlockElement.tag, InstanceRefElement.tag]); |
| |
| RenderingScheduler<StronglyReachableInstancesElement> _r; |
| |
| Stream<RenderedEvent<StronglyReachableInstancesElement>> get onRendered => |
| _r.onRendered; |
| |
| M.IsolateRef _isolate; |
| M.ClassRef _cls; |
| M.StronglyReachableInstancesRepository _stronglyReachableInstances; |
| M.ObjectRepository _objects; |
| M.InstanceSet _result; |
| bool _expanded = false; |
| |
| M.IsolateRef get isolate => _isolate; |
| M.ClassRef get cls => _cls; |
| |
| factory StronglyReachableInstancesElement( |
| M.IsolateRef isolate, |
| M.ClassRef cls, |
| M.StronglyReachableInstancesRepository stronglyReachable, |
| M.ObjectRepository objects, |
| {RenderingQueue queue}) { |
| assert(isolate != null); |
| assert(cls != null); |
| assert(stronglyReachable != null); |
| assert(objects != null); |
| StronglyReachableInstancesElement e = document.createElement(tag.name); |
| e._r = new RenderingScheduler<StronglyReachableInstancesElement>(e, |
| queue: queue); |
| e._isolate = isolate; |
| e._cls = cls; |
| e._stronglyReachableInstances = stronglyReachable; |
| e._objects = objects; |
| return e; |
| } |
| |
| StronglyReachableInstancesElement.created() : super.created(); |
| |
| @override |
| void attached() { |
| super.attached(); |
| _r.enable(); |
| } |
| |
| @override |
| void detached() { |
| super.detached(); |
| children = <Element>[]; |
| _r.disable(notify: true); |
| } |
| |
| void render() { |
| children = <Element>[ |
| new CurlyBlockElement(expanded: _expanded, queue: _r.queue) |
| ..content = _createContent() |
| ..onToggle.listen((e) async { |
| _expanded = e.control.expanded; |
| e.control.disabled = true; |
| await _refresh(); |
| e.control.disabled = false; |
| }) |
| ]; |
| } |
| |
| Future _refresh() async { |
| _result = null; |
| _result = await _stronglyReachableInstances.get(_isolate, _cls); |
| _r.dirty(); |
| } |
| |
| List<Element> _createContent() { |
| if (_result == null) { |
| return [new SpanElement()..text = 'Loading...']; |
| } |
| final content = _result.samples |
| .map<Element>((sample) => new DivElement() |
| ..children = <Element>[ |
| anyRef(_isolate, sample, _objects, queue: _r.queue) |
| ]) |
| .toList(); |
| content.add(new DivElement() |
| ..children = ([] |
| ..addAll(_createShowMoreButton()) |
| ..add(new SpanElement()..text = ' of total ${_result.count}'))); |
| return content; |
| } |
| |
| List<Element> _createShowMoreButton() { |
| final samples = _result.samples.toList(); |
| if (samples.length == _result.count) { |
| return []; |
| } |
| final count = samples.length; |
| final button = new ButtonElement()..text = 'show next ${count}'; |
| button.onClick.listen((_) async { |
| button.disabled = true; |
| _result = await _stronglyReachableInstances.get(_isolate, _cls, |
| limit: count * 2); |
| _r.dirty(); |
| }); |
| return [button]; |
| } |
| } |