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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 #include "base/message_loop/message_loop.h"
      6 #include "base/strings/stringprintf.h"
      7 #include "base/strings/utf_string_conversions.h"
      8 #include "chrome/browser/browser_process.h"
      9 #include "chrome/browser/chrome_notification_types.h"
     10 #include "chrome/browser/profiles/profile.h"
     11 #include "chrome/browser/task_manager/resource_provider.h"
     12 #include "chrome/browser/task_manager/task_manager.h"
     13 #include "chrome/browser/task_manager/task_manager_browsertest_util.h"
     14 #include "chrome/browser/ui/browser.h"
     15 #include "chrome/browser/ui/browser_dialogs.h"
     16 #include "chrome/browser/ui/browser_window.h"
     17 #include "chrome/test/base/ui_test_utils.h"
     18 #include "content/public/browser/notification_source.h"
     19 #include "content/public/browser/web_contents.h"
     20 
     21 namespace {
     22 
     23 int GetWebResourceCount(const TaskManagerModel* model) {
     24   int count = 0;
     25   for (int i = 0; i < model->ResourceCount(); i++) {
     26     task_manager::Resource::Type type = model->GetResourceType(i);
     27     // Skip system infrastructure resources.
     28     if (type == task_manager::Resource::BROWSER ||
     29         type == task_manager::Resource::NACL ||
     30         type == task_manager::Resource::GPU ||
     31         type == task_manager::Resource::UTILITY ||
     32         type == task_manager::Resource::ZYGOTE ||
     33         type == task_manager::Resource::SANDBOX_HELPER) {
     34       continue;
     35     }
     36 
     37     count++;
     38   }
     39   return count;
     40 }
     41 
     42 class ResourceChangeObserver : public TaskManagerModelObserver {
     43  public:
     44   ResourceChangeObserver(const TaskManagerModel* model,
     45                          int target_resource_count)
     46       : model_(model),
     47         target_resource_count_(target_resource_count) {
     48   }
     49 
     50   virtual void OnModelChanged() OVERRIDE {
     51     OnResourceChange();
     52   }
     53 
     54   virtual void OnItemsChanged(int start, int length) OVERRIDE {
     55     OnResourceChange();
     56   }
     57 
     58   virtual void OnItemsAdded(int start, int length) OVERRIDE {
     59     OnResourceChange();
     60   }
     61 
     62   virtual void OnItemsRemoved(int start, int length) OVERRIDE {
     63     OnResourceChange();
     64   }
     65 
     66  private:
     67   void OnResourceChange() {
     68     if (GetWebResourceCount(model_) == target_resource_count_)
     69       base::MessageLoopForUI::current()->Quit();
     70   }
     71 
     72   const TaskManagerModel* model_;
     73   const int target_resource_count_;
     74 };
     75 
     76 }  // namespace
     77 
     78 // static
     79 void TaskManagerBrowserTestUtil::WaitForWebResourceChange(int target_count) {
     80   TaskManagerModel* model = TaskManager::GetInstance()->model();
     81 
     82   ResourceChangeObserver observer(model, target_count);
     83   model->AddObserver(&observer);
     84 
     85   // Checks that the condition has not been satisfied yet.
     86   // This check has to be placed after the installation of the observer,
     87   // because resources may change before that.
     88   if (GetWebResourceCount(model) == target_count) {
     89     model->RemoveObserver(&observer);
     90     return;
     91   }
     92 
     93   content::RunMessageLoop();
     94   model->RemoveObserver(&observer);
     95 }
     96