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      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/base/guid.html">
      9 <link rel="import" href="/tracing/base/iteration_helpers.html">
     10 <link rel="import" href="/tracing/model/helpers/chrome_browser_helper.html">
     11 <link rel="import" href="/tracing/model/helpers/chrome_gpu_helper.html">
     12 <link rel="import" href="/tracing/model/helpers/chrome_renderer_helper.html">
     13 
     14 <script>
     15 'use strict';
     16 
     17 /**
     18  * @fileoverview Utilities for accessing trace data about the Chrome browser.
     19  */
     20 tr.exportTo('tr.model.helpers', function() {
     21   function findChromeBrowserProcess(model) {
     22     var browserProcesses = [];
     23     model.getAllProcesses().forEach(function(process) {
     24       if (!tr.model.helpers.ChromeBrowserHelper.isBrowserProcess(process))
     25         return;
     26       browserProcesses.push(process);
     27     }, this);
     28     if (browserProcesses.length === 0)
     29       return undefined;
     30     if (browserProcesses.length > 1)
     31       return undefined;
     32     return browserProcesses[0];
     33   }
     34 
     35   function findChromeRenderProcesses(model) {
     36     var rendererProcesses = [];
     37     model.getAllProcesses().forEach(function(process) {
     38       if (!tr.model.helpers.ChromeRendererHelper.isRenderProcess(process))
     39         return;
     40       rendererProcesses.push(process);
     41     });
     42     return rendererProcesses;
     43   }
     44 
     45   function findChromeGpuProcess(model) {
     46     var gpuProcesses = model.getAllProcesses().filter(
     47       tr.model.helpers.ChromeGpuHelper.isGpuProcess);
     48     if (gpuProcesses.length != 1)
     49       return undefined;
     50     return gpuProcesses[0];
     51   }
     52 
     53   /**
     54    * @constructor
     55    */
     56   function ChromeModelHelper(model) {
     57     this.model_ = model;
     58 
     59     // Find browserHelper.
     60     this.browserProcess_ = findChromeBrowserProcess(model);
     61     if (this.browserProcess_) {
     62       this.browserHelper_ = new tr.model.helpers.ChromeBrowserHelper(
     63           this, this.browserProcess_);
     64     } else {
     65       this.browserHelper_ = undefined;
     66     }
     67 
     68     // Find gpuHelper.
     69     var gpuProcess = findChromeGpuProcess(model);
     70     if (gpuProcess) {
     71       this.gpuHelper_ = new tr.model.helpers.ChromeGpuHelper(
     72           this, gpuProcess);
     73     } else {
     74       this.gpuHelper_ = undefined;
     75     }
     76 
     77     // Find rendererHelpers.
     78     var rendererProcesses_ = findChromeRenderProcesses(model);
     79 
     80     this.rendererHelpers_ = {};
     81     rendererProcesses_.forEach(function(renderProcess) {
     82       var rendererHelper = new tr.model.helpers.ChromeRendererHelper(
     83         this, renderProcess);
     84       this.rendererHelpers_[rendererHelper.pid] = rendererHelper;
     85     }, this);
     86   }
     87 
     88   ChromeModelHelper.guid = tr.b.GUID.allocate();
     89 
     90   ChromeModelHelper.supportsModel = function(model) {
     91     if (findChromeBrowserProcess(model) !== undefined)
     92       return true;
     93     if (findChromeRenderProcesses(model).length)
     94       return true;
     95     return false;
     96   };
     97 
     98   ChromeModelHelper.prototype = {
     99     get pid() {
    100       throw new Error('woah');
    101     },
    102 
    103     get process() {
    104       throw new Error('woah');
    105     },
    106 
    107     get model() {
    108       return this.model_;
    109     },
    110 
    111     get browserProcess() {
    112       return this.browserProcess_;
    113     },
    114 
    115     get browserHelper() {
    116       return this.browserHelper_;
    117     },
    118 
    119     get gpuHelper() {
    120       return this.gpuHelper_;
    121     },
    122 
    123     get rendererHelpers() {
    124       return this.rendererHelpers_;
    125     }
    126   };
    127 
    128   return {
    129     ChromeModelHelper: ChromeModelHelper
    130   };
    131 });
    132 </script>
    133