Converted Observatory class-view element

runtime/observatory/lib/src/elements/class_allocation_profile.dart

+// 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/cpu_profile/virtual_tree.dart';
+import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
+import 'package:observatory/src/elements/helpers/tag.dart';
+import 'package:observatory/src/elements/sample_buffer_control.dart';
+import 'package:observatory/src/elements/stack_trace_tree_config.dart';
+
+class ClassAllocationProfileElement extends HtmlElement implements Renderable {
+  static const tag = const Tag<ClassAllocationProfileElement>(
+    'class-allocation-profile',
+    dependencies: const [
+      SampleBufferControlElement.tag,
+      StackTraceTreeConfigElement.tag,
+      CpuProfileVirtualTreeElement.tag,
+    ]);
+
+  RenderingScheduler<ClassAllocationProfileElement> _r;
+
+  Stream<RenderedEvent<ClassAllocationProfileElement>> get onRendered =>
+    _r.onRendered;
+
+  M.IsolateRef _isolate;
+  M.Class _cls;
+  M.ClassSampleProfileRepository _profiles;
+  Stream<M.SampleProfileLoadingProgressEvent> _progressStream;
+  M.SampleProfileLoadingProgress _progress;
+  M.SampleProfileTag _tag = M.SampleProfileTag.none;
+  ProfileTreeMode _mode = ProfileTreeMode.function;
+  M.ProfileTreeDirection _direction = M.ProfileTreeDirection.exclusive;
+
+
+
+  M.IsolateRef get isolate => _isolate;
+  M.Class get cls => _cls;
+
+  factory ClassAllocationProfileElement(M.IsolateRef isolate, M.Class cls,
+      M.ClassSampleProfileRepository profiles, {RenderingQueue queue}) {
+    assert(isolate != null);
+    assert(cls != null);
+    assert(profiles != null);
+    ClassAllocationProfileElement e = document.createElement(tag.name);
+    e._r = new RenderingScheduler(e, queue: queue);
+    e._isolate = isolate;
+    e._cls = cls;
+    e._profiles = profiles;
+    return e;
+  }
+
+  ClassAllocationProfileElement.created() : super.created();
+
+  @override
+  void attached() {
+    super.attached();
+    _r.enable();
+    _request();
+  }
+
+  @override
+  void detached() {
+    super.detached();
+    children = [];
+    _r.disable(notify: true);
+  }
+
+  void render() {
+    if (_progress == null) {
+      children = const [];
+      return;
+    }
+    final content = [
+      new SampleBufferControlElement(_progress, _progressStream,
+          selectedTag: _tag, queue: _r.queue)
+        ..onTagChange.listen((e) {
+          _tag = e.element.selectedTag;
+          _request();
+        })
+    ];
+    if (_progress.status == M.SampleProfileLoadingStatus.loaded) {
+      CpuProfileVirtualTreeElement tree;
+      content.addAll([
+        new BRElement(),
+        new StackTraceTreeConfigElement(mode: _mode, direction: _direction,
+          showFilter: false, queue: _r.queue)
+            ..onModeChange.listen((e) {
+              _mode = tree.mode = e.element.mode;
+            })
+            ..onDirectionChange.listen((e) {
+              _direction = tree.direction = e.element.direction;
+            }),
+        new BRElement(),
+        tree = new CpuProfileVirtualTreeElement(_isolate, _progress.profile,
+            queue: _r.queue)
+      ]);
+    }
+    children = content;
+  }
+
+  Future _request() async {
+    _progress = null;
+    _progressStream = _profiles.get(_isolate, _cls, _tag);
+    _r.dirty();
+    _progress = (await _progressStream.first).progress;
+    _r.dirty();
+    if (M.isSampleProcessRunning(_progress.status)) {
+      _progress = (await _progressStream.last).progress;
+      _r.dirty();
+    }
+  }
+}