| // 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. |
| |
| library persitent_handles_page; |
| |
| import 'dart:async'; |
| import 'dart:html'; |
| import 'package:observatory/models.dart' as M; |
| import 'package:observatory/src/elements/containers/virtual_collection.dart'; |
| import 'package:observatory/src/elements/helpers/any_ref.dart'; |
| import 'package:observatory/src/elements/helpers/nav_bar.dart'; |
| import 'package:observatory/src/elements/helpers/nav_menu.dart'; |
| import 'package:observatory/src/elements/helpers/rendering_scheduler.dart'; |
| import 'package:observatory/src/elements/helpers/custom_element.dart'; |
| import 'package:observatory/src/elements/instance_ref.dart'; |
| import 'package:observatory/src/elements/nav/isolate_menu.dart'; |
| import 'package:observatory/src/elements/nav/notify.dart'; |
| import 'package:observatory/src/elements/nav/refresh.dart'; |
| import 'package:observatory/src/elements/nav/top_menu.dart'; |
| import 'package:observatory/src/elements/nav/vm_menu.dart'; |
| import 'package:observatory/utils.dart'; |
| |
| enum _SortingField { externalSize, peer, finalizerCallback } |
| |
| enum _SortingDirection { ascending, descending } |
| |
| class PersistentHandlesPageElement extends CustomElement implements Renderable { |
| late RenderingScheduler<PersistentHandlesPageElement> _r; |
| |
| Stream<RenderedEvent<PersistentHandlesPageElement>> get onRendered => |
| _r.onRendered; |
| |
| late M.VM _vm; |
| late M.IsolateRef _isolate; |
| late M.EventRepository _events; |
| late M.NotificationRepository _notifications; |
| late M.PersistentHandlesRepository _repository; |
| late M.ObjectRepository _objects; |
| M.PersistentHandles? _handles; |
| _SortingField _sortingField = _SortingField.externalSize; |
| _SortingDirection _sortingDirection = _SortingDirection.descending; |
| |
| M.VMRef get vm => _vm; |
| M.IsolateRef get isolate => _isolate; |
| M.NotificationRepository get notifications => _notifications; |
| |
| factory PersistentHandlesPageElement( |
| M.VM vm, |
| M.IsolateRef isolate, |
| M.EventRepository events, |
| M.NotificationRepository notifications, |
| M.PersistentHandlesRepository repository, |
| M.ObjectRepository objects, |
| {RenderingQueue? queue}) { |
| assert(vm != null); |
| assert(isolate != null); |
| assert(events != null); |
| assert(notifications != null); |
| assert(repository != null); |
| assert(objects != null); |
| PersistentHandlesPageElement e = new PersistentHandlesPageElement.created(); |
| e._r = |
| new RenderingScheduler<PersistentHandlesPageElement>(e, queue: queue); |
| e._vm = vm; |
| e._isolate = isolate; |
| e._events = events; |
| e._notifications = notifications; |
| e._repository = repository; |
| e._objects = objects; |
| return e; |
| } |
| |
| PersistentHandlesPageElement.created() |
| : super.created('persistent-handles-page'); |
| |
| @override |
| attached() { |
| super.attached(); |
| _r.enable(); |
| _refresh(); |
| } |
| |
| @override |
| detached() { |
| super.detached(); |
| _r.disable(notify: true); |
| children = <Element>[]; |
| } |
| |
| void render() { |
| children = <Element>[ |
| navBar(<Element>[ |
| new NavTopMenuElement(queue: _r.queue).element, |
| new NavVMMenuElement(_vm, _events, queue: _r.queue).element, |
| new NavIsolateMenuElement(_isolate, _events, queue: _r.queue).element, |
| navMenu('persistent handles'), |
| (new NavRefreshElement(queue: _r.queue) |
| ..onRefresh.listen((_) => _refresh())) |
| .element, |
| new NavNotifyElement(_notifications, queue: _r.queue).element |
| ]) |
| ] |
| ..addAll(_createHandlers('Persistent Handles', |
| _handles?.elements.toList(), _createLine, _updateLine)) |
| ..add(new BRElement()) |
| ..addAll(_createHandlers( |
| 'Weak Persistent Handles', |
| _handles == null |
| ? null |
| : (_handles!.weakElements.toList()..sort(_createSorter())), |
| _createWeakLine, |
| _updateWeakLine, |
| createHeader: _createWeakHeader)); |
| } |
| |
| List<Element> _createHandlers(String name, List? items, create, update, |
| {createHeader}) { |
| return [ |
| new DivElement() |
| ..classes = ['content-centered-big'] |
| ..children = <Element>[ |
| new HeadingElement.h1() |
| ..text = items == null ? '$name' : '$name (${items.length})', |
| new HRElement(), |
| ], |
| new DivElement() |
| ..classes = ['persistent-handles'] |
| ..children = <Element>[ |
| items == null |
| ? (new HeadingElement.h2() |
| ..classes = ['content-centered-big'] |
| ..text = 'Loading...') |
| : new VirtualCollectionElement(create, update, |
| items: items, createHeader: createHeader, queue: _r.queue) |
| .element |
| ] |
| ]; |
| } |
| |
| _createSorter() { |
| var getter; |
| switch (_sortingField) { |
| case _SortingField.externalSize: |
| getter = _getExternalSize; |
| break; |
| case _SortingField.peer: |
| getter = _getPeer; |
| break; |
| case _SortingField.finalizerCallback: |
| getter = _getFinalizerCallback; |
| break; |
| } |
| switch (_sortingDirection) { |
| case _SortingDirection.ascending: |
| int sort(M.WeakPersistentHandle a, M.WeakPersistentHandle b) { |
| return getter(a).compareTo(getter(b)); |
| } |
| return sort; |
| case _SortingDirection.descending: |
| int sort(M.WeakPersistentHandle a, M.WeakPersistentHandle b) { |
| return getter(b).compareTo(getter(a)); |
| } |
| return sort; |
| } |
| } |
| |
| static HtmlElement _createLine() => new DivElement() |
| ..classes = ['collection-item'] |
| ..text = 'object'; |
| |
| static HtmlElement _createWeakLine() => new DivElement() |
| ..classes = ['weak-item'] |
| ..children = <Element>[ |
| new SpanElement() |
| ..classes = ['external-size'] |
| ..text = '0B', |
| new SpanElement() |
| ..classes = ['peer'] |
| ..text = '0x00000', |
| new SpanElement()..classes = ['object'], |
| new SpanElement() |
| ..classes = ['finalizer'] |
| ..text = 'dart::Class::Method()' |
| ]; |
| |
| List<HtmlElement> _createWeakHeader() => [ |
| new DivElement() |
| ..classes = ['weak-item'] |
| ..children = <Element>[ |
| _createHeaderButton(const ['external-size'], 'External Size', |
| _SortingField.externalSize, _SortingDirection.descending), |
| _createHeaderButton(const ['peer'], 'Peer', _SortingField.peer, |
| _SortingDirection.descending), |
| new SpanElement() |
| ..classes = ['object'] |
| ..text = 'Object', |
| _createHeaderButton(const ['finalizer'], 'Finalizer Callback', |
| _SortingField.finalizerCallback, _SortingDirection.ascending) |
| ] |
| ]; |
| |
| ButtonElement _createHeaderButton(List<String> classes, String text, |
| _SortingField field, _SortingDirection direction) => |
| new ButtonElement() |
| ..classes = classes |
| ..text = _sortingField != field |
| ? text |
| : _sortingDirection == _SortingDirection.ascending |
| ? '$textâ–¼' |
| : '$textâ–²' |
| ..onClick.listen((_) => _setSorting(field, direction)); |
| |
| void _setSorting(_SortingField field, _SortingDirection defaultDirection) { |
| if (_sortingField == field) { |
| switch (_sortingDirection) { |
| case _SortingDirection.descending: |
| _sortingDirection = _SortingDirection.ascending; |
| break; |
| case _SortingDirection.ascending: |
| _sortingDirection = _SortingDirection.descending; |
| break; |
| } |
| } else { |
| _sortingDirection = defaultDirection; |
| _sortingField = field; |
| } |
| _r.dirty(); |
| } |
| |
| void _updateWeakLine(Element e, itemDynamic, index) { |
| M.WeakPersistentHandle item = itemDynamic; |
| e.children[0].text = Utils.formatSize(_getExternalSize(item)); |
| e.children[1].text = '${_getPeer(item)}'; |
| e.children[2] = anyRef(_isolate, item.object, _objects, queue: _r.queue) |
| ..classes = ['object']; |
| e.children[3] |
| ..text = '${_getFinalizerCallback(item)}' |
| ..title = '${_getFinalizerCallback(item)}'; |
| } |
| |
| void _updateLine(Element e, itemDynamic, index) { |
| M.PersistentHandle item = itemDynamic; |
| e.children = <Element>[ |
| anyRef(_isolate, item.object, _objects, queue: _r.queue) |
| ..classes = ['object'] |
| ]; |
| } |
| |
| Future _refresh({bool gc: false, bool reset: false}) async { |
| _handles = null; |
| _r.dirty(); |
| _handles = await _repository.get(_isolate); |
| _r.dirty(); |
| } |
| |
| static int _getExternalSize(M.WeakPersistentHandle h) => h.externalSize; |
| static String _getPeer(M.WeakPersistentHandle h) => h.peer; |
| static String _getFinalizerCallback(M.WeakPersistentHandle h) => |
| '${h.callbackSymbolName} (${h.callbackAddress})'; |
| } |