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      1 <!DOCTYPE html>
      2 <!--
      3 Copyright (c) 2013 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/base/base.html">
      9 
     10 <script>
     11 'use strict';
     12 
     13 /**
     14  * @fileoverview Provides the Event Index class.
     15  */
     16 tr.exportTo('tr.model', function() {
     17   /**
     18    * A Event Index maps an id to all the events that have that particular id
     19    *
     20    * @constructor
     21    */
     22   function ModelIndices(model) {
     23     // For now the only indices we construct are for flowEvents
     24     this.flowEventsById_ = {};
     25     model.flowEvents.forEach(function(fe) {
     26       if (fe.id !== undefined) {
     27         if (!this.flowEventsById_.hasOwnProperty(fe.id)) {
     28           this.flowEventsById_[fe.id] = new Array();
     29         }
     30         this.flowEventsById_[fe.id].push(fe);
     31       }
     32     }, this);
     33   }
     34 
     35   ModelIndices.prototype = {
     36     addEventWithId: function(id, event) {
     37       if (!this.flowEventsById_.hasOwnProperty(id)) {
     38         this.flowEventsById_[id] = new Array();
     39       }
     40       this.flowEventsById_[id].push(event);
     41     },
     42 
     43     getFlowEventsWithId: function(id) {
     44       if (!this.flowEventsById_.hasOwnProperty(id))
     45         return [];
     46       return this.flowEventsById_[id];
     47     }
     48   };
     49 
     50   return {
     51     ModelIndices: ModelIndices
     52   };
     53 });
     54 </script>
     55 
     56