<!DOCTYPE html>
<!--
Copyright (c) 2013 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<link rel="import" href="/tracing/base/units/time_stamp.html">
<link rel="import" href="/tracing/model/timed_event.html">

<script>
'use strict';

/**
 * @fileoverview Provides the Sample class.
 */
tr.exportTo('tr.model', function() {
  /**
   * A Sample represents a sample taken at an instant in time, plus its stack
   * frame and parameters associated with that sample.
   *
   * @constructor
   */
  function Sample(cpu, thread, title, start, leafStackFrame,
                  opt_weight, opt_args) {
    tr.model.TimedEvent.call(this, start);

    this.title = title;
    this.cpu = cpu;
    this.thread = thread;
    this.leafStackFrame = leafStackFrame;
    this.weight = opt_weight;
    this.args = opt_args || {};
  }

  Sample.prototype = {
    __proto__: tr.model.TimedEvent.prototype,

    get colorId() {
      return this.leafStackFrame.colorId;
    },

    get stackTrace() {
      return this.leafStackFrame.stackTrace;
    },

    getUserFriendlyStackTrace: function() {
      return this.leafStackFrame.getUserFriendlyStackTrace();
    },

    get userFriendlyName() {
      return 'Sample at ' + tr.b.u.TimeStamp.format(this.start);
    }
  };

  tr.model.EventRegistry.register(
      Sample,
      {
        name: 'sample',
        pluralName: 'samples',
        singleViewElementName: 'tr-ui-a-single-sample-sub-view',
        multiViewElementName: 'tr-ui-a-multi-sample-sub-view'
      });

  return {
    Sample: Sample
  };
});
</script>