Consolidates accessing and setting the UMA pref to be within metrics code

chrome/browser/ui/webui/options/browser_options_handler.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/webui/options/browser_options_handler.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 12 matching lines @@
 #include "base/value_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/auto_launch_trial.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chrome_page_zoom.h"
 #include "chrome/browser/custom_home_pages_table_model.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/gpu/gpu_mode_manager.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
+#include "chrome/browser/metrics/metrics_reporting_state.h"
 #include "chrome/browser/net/prediction_options.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_avatar_icon_util.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_metrics.h"
 #include "chrome/browser/profiles/profile_shortcut_manager.h"
@@ skipping 490 matching lines @@
   values->SetString("username", username);
 #endif
 
   // Pass along sync status early so it will be available during page init.
   values->Set("syncData", GetSyncStateDictionary().release());
 
   values->SetString("privacyLearnMoreURL", chrome::kPrivacyLearnMoreURL);
   values->SetString("doNotTrackLearnMoreURL", chrome::kDoNotTrackLearnMoreURL);
 
 #if !defined(OS_CHROMEOS)
-  PrefService* pref_service = g_browser_process->local_state();
-  values->SetBoolean("metricsReportingEnabledAtStart", pref_service->GetBoolean(
-      prefs::kMetricsReportingEnabled));
+  values->SetBoolean("metricsReportingEnabledAtStart",
+       ChromeMetricsServiceAccessor::IsMetricsReportingEnabled());
 #endif
 
 #if defined(OS_CHROMEOS)
   // TODO(pastarmovj): replace this with a call to the CrosSettings list
   // handling functionality to come.
   values->Set("timezoneList", chromeos::system::GetTimezoneList().release());
 
   values->SetString("accessibilityLearnMoreURL",
                     chrome::kChromeAccessibilityHelpURL);
 
@@ skipping 198 matching lines @@
       "launchEasyUnlockSetup",
       base::Bind(&BrowserOptionsHandler::HandleLaunchEasyUnlockSetup,
                base::Unretained(this)));
 #if defined(OS_WIN)
   web_ui()->RegisterMessageCallback(
       "refreshExtensionControlIndicators",
       base::Bind(
           &BrowserOptionsHandler::HandleRefreshExtensionControlIndicators,
           base::Unretained(this)));
 #endif  // defined(OS_WIN)
+  web_ui()->RegisterMessageCallback("metricsReportingCheckboxChanged",
+      base::Bind(&BrowserOptionsHandler::HandleMetricsReportingChange,
+                 base::Unretained(this)));
 }
 
 void BrowserOptionsHandler::Uninitialize() {
   registrar_.RemoveAll();
 #if defined(OS_WIN)
   ExtensionRegistry::Get(Profile::FromWebUI(web_ui()))->RemoveObserver(this);
 #endif
 }
 
 void BrowserOptionsHandler::OnStateChanged() {
@@ skipping 141 matching lines @@
 void BrowserOptionsHandler::InitializePage() {
   page_initialized_ = true;
 
   OnTemplateURLServiceChanged();
 
   ObserveThemeChanged();
   OnStateChanged();
   UpdateDefaultBrowserState();
 
   SetupMetricsReportingSettingVisibility();
+  SetupMetricsReportingCheckbox();
   SetupNetworkPredictionControl();
   SetupFontSizeSelector();
   SetupPageZoomSelector();
   SetupAutoOpenFileTypes();
   SetupProxySettingsSection();
   SetupManageCertificatesSection();
   SetupManagingSupervisedUsers();
   SetupEasyUnlock();
   SetupExtensionControlledIndicators();
 
@@ skipping 927 matching lines @@
   // Check if an extension is overwriting the proxy setting.
   extension = extensions::GetExtensionOverridingProxy(
       Profile::FromWebUI(web_ui()));
   AppendExtensionData("proxy", extension, &extension_controlled);
 
   web_ui()->CallJavascriptFunction("BrowserOptions.toggleExtensionIndicators",
                                    extension_controlled);
 #endif  // defined(OS_WIN)
 }
 
+void BrowserOptionsHandler::SetupMetricsReportingCheckbox() {
+  // This function does not work for ChromeOS. In ChromeOS a different
+  // preference is used. It is tied to HTML element, and therefore, no special
+  // setup is needed.
+#if !defined(OS_CHROMEOS)
+  bool checked = ChromeMetricsServiceAccessor::IsMetricsReportingEnabled();
+  bool disabled = !IsMetricsReportingUserChangable();
+
+  SetMetricsReportingCheckbox(checked, disabled);
+#endif
+}
+
+void BrowserOptionsHandler::HandleMetricsReportingChange(
+    const base::ListValue* args) {
+  bool enable;
+  if (!args->GetBoolean(0, &enable))
+    return;
+
+  OnMetricsReportingCallbackType callback_fn = base::Bind(
+      &BrowserOptionsHandler::MetricsReportingChangeCallback,
+      base::Unretained(this));

[stevenjb, 2014/09/12 18:07:41]

nit: no need for local here

[gayane -on leave until 09-2017, 2014/09/12 18:20:12]

Done.

+  InitiateMetricsReportingChange(enable, callback_fn);
+}
+
+void BrowserOptionsHandler::MetricsReportingChangeCallback(bool enabled) {
+  SetMetricsReportingCheckbox(enabled, !IsMetricsReportingUserChangable());
+}
+
+void BrowserOptionsHandler::SetMetricsReportingCheckbox(bool checked,
+                                                        bool disabled) {
+  web_ui()->CallJavascriptFunction(
+      "BrowserOptions.setMetricsReportingCheckboxState",
+      base::FundamentalValue(checked),
+      base::FundamentalValue(disabled));
+}
+
 }  // namespace options