| // 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/app.dart'; |
| import 'package:observatory/mocks.dart'; |
| import 'package:observatory/models.dart' as M; |
| import 'package:observatory/service.dart'; |
| import 'package:observatory/service_common.dart'; |
| import 'package:observatory/src/elements/helpers/tag.dart'; |
| import 'package:observatory/src/elements/shims/binding.dart'; |
| import 'package:observatory/src/elements/nav/vm_menu.dart'; |
| |
| @bindable |
| class NavVMMenuElementWrapper extends HtmlElement { |
| static const binder = const Binder<NavVMMenuElementWrapper>(const { |
| 'last': #last, 'vm': #vm |
| }); |
| |
| static const tag = const Tag<NavVMMenuElementWrapper>('vm-nav-menu'); |
| |
| StreamSubscription _subscription; |
| StreamController<M.VMUpdateEvent> _updatesController = |
| new StreamController<M.VMUpdateEvent>.broadcast(); |
| |
| bool _last = false; |
| VM _vm; |
| bool get last => _last; |
| VM get vm => _vm; |
| set last(bool value) { |
| _last = value; render(); |
| } |
| set vm(VM value) { |
| _vm = value; _detached(); _attached(); |
| } |
| |
| NavVMMenuElementWrapper.created() : super.created() { |
| binder.registerCallback(this); |
| _last = _getBoolAttribute('last'); |
| createShadowRoot(); |
| render(); |
| } |
| |
| @override |
| void attached() { |
| super.attached(); |
| _attached(); |
| } |
| |
| @override |
| void detached() { |
| super.detached(); |
| _detached(); |
| } |
| |
| void _attached() { |
| if (_vm != null) { |
| _subscription = _vm.changes.listen((_) { |
| _updatesController.add(new VMUpdateEventMock(vm: _vm)); |
| }); |
| } |
| render(); |
| } |
| |
| void _detached() { |
| if (_subscription != null) { |
| _subscription.cancel(); |
| _subscription = null; |
| } |
| } |
| |
| void render() { |
| shadowRoot.children = []; |
| if (_vm == null || _last == null) return; |
| |
| shadowRoot.children = [ |
| new NavVMMenuElement(vm, _updatesController.stream, last: last, |
| target: (vm as CommonWebSocketVM)?.target, |
| queue: ObservatoryApplication.app.queue) |
| ..children = [new ContentElement()] |
| ]; |
| } |
| |
| bool _getBoolAttribute(String name) { |
| final String value = getAttribute(name); |
| return !(value == null || value == 'false'); |
| } |
| } |