| // 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_2/models.dart' as M; |
| import 'package:observatory_2/src/elements/helpers/rendering_scheduler.dart'; |
| import 'package:observatory_2/src/elements/helpers/custom_element.dart'; |
| |
| class MetricGraphElement extends CustomElement implements Renderable { |
| RenderingScheduler<MetricGraphElement> _r; |
| |
| Stream<RenderedEvent<MetricGraphElement>> get onRendered => _r.onRendered; |
| |
| M.IsolateRef _isolate; |
| M.Metric _metric; |
| M.MetricRepository _metrics; |
| Timer _timer; |
| |
| M.IsolateRef get isolate => _isolate; |
| M.Metric get metric => _metric; |
| |
| factory MetricGraphElement( |
| M.IsolateRef isolate, M.Metric metric, M.MetricRepository metrics, |
| {RenderingQueue queue}) { |
| assert(isolate != null); |
| assert(metric != null); |
| assert(metrics != null); |
| MetricGraphElement e = new MetricGraphElement.created(); |
| e._r = new RenderingScheduler<MetricGraphElement>(e, queue: queue); |
| e._isolate = isolate; |
| e._metric = metric; |
| e._metrics = metrics; |
| return e; |
| } |
| |
| MetricGraphElement.created() : super.created('metric-graph'); |
| |
| @override |
| void attached() { |
| super.attached(); |
| _r.enable(); |
| _timer = new Timer.periodic(const Duration(seconds: 1), (_) => _r.dirty()); |
| } |
| |
| @override |
| void detached() { |
| super.detached(); |
| _r.disable(notify: true); |
| children = <Element>[]; |
| _timer.cancel(); |
| } |
| |
| void render() { |
| final min = _metrics.getMinValue(_isolate, _metric); |
| final max = _metrics.getMaxValue(_isolate, _metric); |
| final rows = _metrics |
| .getSamples(_isolate, _metric) |
| .map((s) => [s.time.millisecondsSinceEpoch, s.value]) |
| .toList(); |
| final current = rows.last.last; |
| |
| var message = 'current: $current'; |
| if (min != null) { |
| message = 'min: $min, $message'; |
| } |
| if (max != null) { |
| message = message + ', max: $max'; |
| } |
| |
| final host = new DivElement(); |
| children = <Element>[ |
| new DivElement() |
| ..classes = ['memberList'] |
| ..children = <Element>[ |
| new DivElement() |
| ..classes = ['memberItem'] |
| ..children = min == null |
| ? const [] |
| : [ |
| new DivElement() |
| ..classes = ['memberName'] |
| ..text = 'min', |
| new DivElement() |
| ..classes = ['memberValue'] |
| ..text = '$min' |
| ], |
| new DivElement() |
| ..classes = ['memberItem'] |
| ..children = <Element>[ |
| new DivElement() |
| ..classes = ['memberName'] |
| ..text = 'current', |
| new DivElement() |
| ..classes = ['memberValue'] |
| ..text = '$current' |
| ], |
| new DivElement() |
| ..classes = ['memberItem'] |
| ..children = max == null |
| ? const [] |
| : [ |
| new DivElement() |
| ..classes = ['memberName'] |
| ..text = 'max', |
| new DivElement() |
| ..classes = ['memberValue'] |
| ..text = '$max' |
| ] |
| ], |
| ]; |
| if (rows.length <= 1) { |
| return; |
| } |
| } |
| } |