Refactor Observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/isolate_profile.dart

-// Copyright (c) 2013, 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 isolate_profile_element;
-
-import 'dart:html';
-import 'package:logging/logging.dart';
-import 'package:observatory/observatory.dart';
-import 'package:polymer/polymer.dart';
-import 'observatory_element.dart';
-
-class ProfileCallerTreeRow extends TableTreeRow {
-  final Isolate isolate;
-  @observable final Code code;
-
-  static String formatPercent(num a, num total) {
-    var percent = 100.0 * (a / total);
-    return '${percent.toStringAsFixed(2)}%';
-  }
-
-  ProfileCallerTreeRow(this.isolate, this.code, ProfileCallerTreeRow parent) :
-      super(parent) {
-    // When the row is created, fill out the columns.
-    columns.add(
-        formatPercent(code.exclusiveTicks, isolate.profile.totalSamples));
-    if (parent == null) {
-      // Fill with dummy data.
-      columns.add('');
-    } else {
-      var totalAttributedCalls = parent.code.callersCount(code);
-      var totalParentCalls = parent.code.sumCallersCount();
-      columns.add(formatPercent(totalAttributedCalls, totalParentCalls));
-    }
-    columns.add(
-        formatPercent(code.inclusiveTicks, isolate.profile.totalSamples));
-  }
-
-  void onShow() {
-    if (children.length > 0) {
-      // Child rows already created.
-      return;
-    }
-    // Create child rows on demand.
-    code.callers.forEach((CodeCallCount codeCaller) {
-      var row =
-          new ProfileCallerTreeRow(isolate, codeCaller.code, this);
-      children.add(row);
-    });
-  }
-
-  void onHide() {
-  }
-}
-
-/// Displays an IsolateProfile
-@CustomTag('isolate-profile')
-class IsolateProfileElement extends ObservatoryElement {
-  IsolateProfileElement.created() : super.created();
-  @observable int methodCountSelected = 0;
-  final List methodCounts = [10, 20, 50];
-  @observable List topExclusiveCodes = toObservable([]);
-  final _id = '#tableTree';
-  TableTree tree;
-
-  void enteredView() {
-    var isolateId = app.locationManager.currentIsolateId();
-    var isolate = app.isolateManager.getIsolate(isolateId);
-    if (isolate == null) {
-      return;
-    }
-    tree = new TableTree(['Method', 'Exclusive', 'Caller', 'Inclusive']);
-    _refresh(isolate);
-  }
-
-  void _startRequest() {
-    // TODO(johnmccutchan): Indicate visually.
-  }
-
-  void _endRequest() {
-    // TODO(johnmccutchan): Indicate visually.
-  }
-
-  methodCountSelectedChanged(oldValue) {
-    var isolateId = app.locationManager.currentIsolateId();
-    var isolate = app.isolateManager.getIsolate(isolateId);
-    if (isolate == null) {
-      return;
-    }
-    _refresh(isolate);
-  }
-
-  void refresh(var done) {
-    var isolateId = app.locationManager.currentIsolateId();
-    var isolate = app.isolateManager.getIsolate(isolateId);
-    if (isolate == null) {
-      Logger.root.info('No isolate found.');
-      return;
-    }
-    var request = '/$isolateId/profile';
-    _startRequest();
-    app.requestManager.requestMap(request).then((Map profile) {
-      assert(profile['type'] == 'Profile');
-      var samples = profile['samples'];
-      Logger.root.info('Profile contains ${samples} samples.');
-      _loadProfileData(isolate, samples, profile);
-      _endRequest();
-    }).catchError((e) {
-      _endRequest();
-    }).whenComplete(done);
-  }
-
-  void _loadProfileData(Isolate isolate, int totalSamples, Map response) {
-    isolate.profile = new Profile.fromMap(isolate, response);
-    _refresh(isolate);
-  }
-
-  void _refresh(Isolate isolate) {
-    _refreshTopMethods(isolate);
-    _refreshTree(isolate);
-  }
-
-  void _refreshTree(Isolate isolate) {
-    var rootChildren = [];
-    for (var code in topExclusiveCodes) {
-      var row = new ProfileCallerTreeRow(isolate, code, null);
-      rootChildren.add(row);
-    }
-    tree.initialize(rootChildren);
-    notifyPropertyChange(#tree, null, tree);
-  }
-
-
-  void _refreshTopMethods(Isolate isolate) {
-    topExclusiveCodes.clear();
-    if ((isolate == null) || (isolate.profile == null)) {
-      return;
-    }
-    var count = methodCounts[methodCountSelected];
-    var topExclusive = isolate.profile.topExclusive(count);
-    topExclusiveCodes.addAll(topExclusive);
-  }
-
-  @observable String padding(TableTreeRow row) {
-    return 'padding-left: ${row.depth * 16}px;';
-  }
-
-  @observable String coloring(TableTreeRow row) {
-    const colors = const ['active', 'success', 'warning', 'danger', 'info'];
-    var index = row.depth % colors.length;
-    return colors[index];
-  }
-
-  @observable void toggleExpanded(Event e, var detail, Element target) {
-    var row = target.parent;
-    if (row is TableRowElement) {
-      // Subtract 1 to get 0 based indexing.
-      tree.toggle(row.rowIndex - 1);
-    }
-  }
-}