src/third_party/trace-viewer/trace_viewer/tracing/analysis/analyze_objects.html

   1 <!DOCTYPE html>
   2 <!--
   3 Copyright (c) 2014 The Chromium Authors. All rights reserved.
   4 Use of this source code is governed by a BSD-style license that can be
   5 found in the LICENSE file.
   6 -->
   7
   8 <link rel="import" href="/tracing/analysis/analysis_sub_view.html">
   9 <link rel="import" href="/base.html">
  10
  11 <polymer-element name="multiple-objects-analysis-sub-view"
  12     extends="tracing-analysis-sub-view"
  13     constructor="MultipleObjectsAnalysisSubView">
  14   <script>
  15   'use strict';
  16   tv.onPolymerReady(function() {
  17     tracing.registerAnalysisSubViewType(
  18         0,
  19         function supported(selection) {
  20           return selection[0] instanceof tracing.trace_model.ObjectInstance ||
  21               selection[0] instanceof tracing.trace_model.ObjectSnapshot;
  22         },
  23         function constructView(selection) {
  24           if (selection.length != 1)
  25             return new MultipleObjectsAnalysisSubView();
  26
  27           var event = selection[0];
  28           var typeName, viewBaseType, defaultViewConstructor;
  29           if (event instanceof tracing.trace_model.ObjectSnapshot) {
  30             typeName = event.objectInstance.typeName;
  31             viewBaseType = tracing.analysis.ObjectSnapshotView;
  32             defaultViewConstructor = tracing.analysis.DefaultObjectSnapshotView;
  33           } else if (event instanceof tracing.trace_model.ObjectInstance) {
  34             typeName = event.typeName;
  35             viewBaseType = tracing.analysis.ObjectInstanceView;
  36             defaultViewConstructor = tracing.analysis.DefaultObjectInstanceView;
  37           } else {
  38             throw new Error('Not recognized');
  39           }
  40
  41           var customViewInfo = viewBaseType.getViewInfo(typeName);
  42           if (customViewInfo)
  43             return new customViewInfo.constructor();
  44           return new defaultViewConstructor();
  45         },
  46         {
  47           passSelectionToConstructor: true
  48         });
  49   });
  50
  51   Polymer({
  52     created: function() {
  53       this.currentSelection_ = undefined;
  54     },
  55
  56     set selection(selection) {
  57       this.currentSelection_ = selection;
  58       this.textContent = '';
  59
  60       if (selection.length === 0)
  61         return;
  62
  63       var results = new tracing.analysis.AnalysisResults();
  64       this.appendChild(results);
  65
  66       this.analyzeObjectEvents_(results, selection);
  67     },
  68
  69     get selection() {
  70       return this.currentSelection_;
  71     },
  72
  73     /**
  74      * Extremely simplistic analysis of objects. Mainly exists to provide
  75      * click-through to the main object's analysis view.
  76      */
  77     analyzeObjectEvents_: function(results, objectEvents) {
  78       objectEvents = tv.asArray(objectEvents).sort(
  79           tv.Range.compareByMinTimes);
  80
  81       results.appendHeader('Selected Objects:');
  82       var table = results.appendTable('analysis-object-sample-table', 2);
  83
  84       objectEvents.forEach(function(event) {
  85         var row = results.appendBodyRow(table);
  86         var ts;
  87         var objectText;
  88         var selectionGenerator;
  89         if (event instanceof tracing.trace_model.ObjectSnapshot) {
  90           var objectSnapshot = event;
  91           ts = tracing.analysis.tsRound(objectSnapshot.ts);
  92           objectText = objectSnapshot.objectInstance.typeName + ' ' +
  93               objectSnapshot.objectInstance.id;
  94           selectionGenerator = function() {
  95             var selection = new tracing.Selection();
  96             selection.push(objectSnapshot);
  97             return selection;
  98           };
  99         } else {
 100           var objectInstance = event;
 101
 102           var deletionTs = objectInstance.deletionTs == Number.MAX_VALUE ?
 103               '' : tracing.analysis.tsRound(objectInstance.deletionTs);
 104           ts = tracing.analysis.tsRound(objectInstance.creationTs) +
 105               '-' + deletionTs;
 106
 107           objectText = objectInstance.typeName + ' ' +
 108               objectInstance.id;
 109
 110           selectionGenerator = function() {
 111             var selection = new tracing.Selection();
 112             selection.push(objectInstance);
 113             return selection;
 114           };
 115         }
 116
 117         results.appendTableCell(table, row, ts);
 118         var linkContainer = results.appendTableCell(table, row, '');
 119         linkContainer.appendChild(
 120             results.createSelectionChangingLink(
 121                 objectText,
 122                 selectionGenerator));
 123       });
 124     }
 125   });
 126   </script>
 127 </polymer-element>