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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 'use strict';
      6 
      7 /**
      8  * @fileoverview Provides the TimelineSlice class.
      9  */
     10 base.exportTo('tracing', function() {
     11 
     12   /**
     13    * A TimelineSlice represents an interval of time plus parameters associated
     14    * with that interval.
     15    *
     16    * All time units are stored in milliseconds.
     17    * @constructor
     18    */
     19   function TimelineSlice(category, title, colorId, start, args, opt_duration) {
     20     this.category = category || '';
     21     this.title = title;
     22     this.start = start;
     23     this.colorId = colorId;
     24     this.args = args;
     25     this.didNotFinish = false;
     26     if (opt_duration !== undefined)
     27       this.duration = opt_duration;
     28   }
     29 
     30   TimelineSlice.prototype = {
     31     selected: false,
     32 
     33     duration: undefined,
     34 
     35     get end() {
     36       return this.start + this.duration;
     37     }
     38   };
     39 
     40   return {
     41     TimelineSlice: TimelineSlice
     42   };
     43 });
     44