src/third_party/WebKit/Source/devtools/front_end/timeline/TimelinePowerGraph.js

   1 // Copyright 2014 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 /**
   6  * @constructor
   7  * @extends {WebInspector.CountersGraph}
   8  * @implements {WebInspector.TimelineModeView}
   9  * @param {!WebInspector.TimelineModeViewDelegate} delegate
  10  * @param {!WebInspector.TimelineModel} model
  11  */
  12 WebInspector.TimelinePowerGraph = function(delegate, model)
  13 {
  14     WebInspector.CountersGraph.call(this, WebInspector.UIString("POWER"), delegate, model);
  15
  16     this._counter = this.createCounter(WebInspector.UIString("Power"), WebInspector.UIString("Power: %.2f\u2009watts"), "#d00");
  17     WebInspector.powerProfiler.addEventListener(WebInspector.PowerProfiler.EventTypes.PowerEventRecorded, this._onRecordAdded, this);
  18 }
  19
  20 WebInspector.TimelinePowerGraph.prototype = {
  21     dispose: function()
  22     {
  23         WebInspector.CountersGraph.prototype.dispose.call(this);
  24         WebInspector.powerProfiler.removeEventListener(WebInspector.PowerProfiler.EventTypes.PowerEventRecorded, this._onRecordAdded, this);
  25     },
  26
  27     _onRecordAdded: function(event)
  28     {
  29         var record = event.data;
  30         if (!this._previousRecord) {
  31             this._previousRecord = record;
  32             return;
  33         }
  34
  35         // "value" of original PowerEvent means the average power between previous sampling to current one.
  36         // Here, it is converted to average power between current sampling to next one.
  37         this._counter.appendSample(this._previousRecord.timestamp, record.value);
  38         this._previousRecord = record;
  39         this.scheduleRefresh();
  40     },
  41
  42     /**
  43      * @param {!WebInspector.TimelineModel.Record} record
  44      */
  45     addRecord: function(record)
  46     {
  47     },
  48
  49     __proto__: WebInspector.CountersGraph.prototype
  50 }