Options2: Pull the trigger.

chrome/browser/ui/webui/options2/core_options_handler.cc

Index: chrome/browser/ui/webui/options2/core_options_handler.cc
diff --git a/chrome/browser/ui/webui/options2/core_options_handler.cc b/chrome/browser/ui/webui/options2/core_options_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..41402339dfec2fa061a5ec78e5311772c4a561b9
--- /dev/null
+++ b/chrome/browser/ui/webui/options2/core_options_handler.cc
@@ -0,0 +1,466 @@
+// Copyright (c) 2011 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/options2/core_options_handler.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/json/json_reader.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
+#include "base/string_number_conversions.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/google/google_util.h"
+#include "chrome/browser/net/url_fixer_upper.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/user_metrics.h"
+#include "googleurl/src/gurl.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "grit/locale_settings.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+using content::UserMetricsAction;
+
+CoreOptionsHandler::CoreOptionsHandler()
+    : handlers_host_(NULL) {
+}
+
+CoreOptionsHandler::~CoreOptionsHandler() {}
+
+void CoreOptionsHandler::Initialize() {
+  clear_plugin_lso_data_enabled_.Init(prefs::kClearPluginLSODataEnabled,
+                                      Profile::FromWebUI(web_ui_),
+                                      this);
+  UpdateClearPluginLSOData();
+}
+
+void CoreOptionsHandler::GetLocalizedValues(
+    DictionaryValue* localized_strings) {
+  GetStaticLocalizedValues(localized_strings);
+}
+
+void CoreOptionsHandler::GetStaticLocalizedValues(
+    base::DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+  // Main
+  localized_strings->SetString("title",
+      l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
+
+  // Managed prefs
+  localized_strings->SetString("policyManagedPrefsBannerText",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_POLICY_MANAGED_PREFS));
+  localized_strings->SetString("extensionManagedPrefsBannerText",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_EXTENSION_MANAGED_PREFS));
+  localized_strings->SetString("policyAndExtensionManagedPrefsBannerText",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_POLICY_EXTENSION_MANAGED_PREFS));
+
+  // Controlled settings bubble.
+  localized_strings->SetString("controlledSettingPolicy",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_CONTROLLED_SETTING_POLICY));
+  localized_strings->SetString("controlledSettingExtension",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_CONTROLLED_SETTING_EXTENSION));
+  localized_strings->SetString("controlledSettingRecommended",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_CONTROLLED_SETTING_RECOMMENDED));
+  localized_strings->SetString("controlledSettingApplyRecommendation",
+      l10n_util::GetStringUTF16(
+          IDS_OPTIONS_CONTROLLED_SETTING_APPLY_RECOMMENDATION));
+
+  // Search
+  RegisterTitle(localized_strings, "searchPage", IDS_OPTIONS_SEARCH_PAGE_TITLE);
+  localized_strings->SetString("searchPlaceholder",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_SEARCH_PLACEHOLDER));
+  localized_strings->SetString("searchPageNoMatches",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_SEARCH_PAGE_NO_MATCHES));
+  localized_strings->SetString("searchPageHelpLabel",
+      l10n_util::GetStringUTF16(IDS_OPTIONS_SEARCH_PAGE_HELP_LABEL));
+  localized_strings->SetString("searchPageHelpTitle",
+      l10n_util::GetStringFUTF16(IDS_OPTIONS_SEARCH_PAGE_HELP_TITLE,
+          l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
+  localized_strings->SetString("searchPageHelpURL",
+      google_util::AppendGoogleLocaleParam(
+          GURL(chrome::kChromeHelpURL)).spec());
+
+  // Common
+  localized_strings->SetString("ok",
+      l10n_util::GetStringUTF16(IDS_OK));
+  localized_strings->SetString("cancel",
+      l10n_util::GetStringUTF16(IDS_CANCEL));
+  localized_strings->SetString("learnMore",
+      l10n_util::GetStringUTF16(IDS_LEARN_MORE));
+  localized_strings->SetString("close",
+      l10n_util::GetStringUTF16(IDS_CLOSE));
+}
+
+void CoreOptionsHandler::Uninitialize() {
+  std::string last_pref;
+  for (PreferenceCallbackMap::const_iterator iter = pref_callback_map_.begin();
+       iter != pref_callback_map_.end();
+       ++iter) {
+    if (last_pref != iter->first) {
+      StopObservingPref(iter->first);
+      last_pref = iter->first;
+    }
+  }
+}
+
+WebUIMessageHandler* CoreOptionsHandler::Attach(WebUI* web_ui) {
+  WebUIMessageHandler* result = WebUIMessageHandler::Attach(web_ui);
+  DCHECK(web_ui_);
+  registrar_.Init(Profile::FromWebUI(web_ui_)->GetPrefs());
+  return result;
+}
+
+void CoreOptionsHandler::Observe(int type,
+                                 const content::NotificationSource& source,
+                                 const content::NotificationDetails& details) {
+  if (type == chrome::NOTIFICATION_PREF_CHANGED) {
+    std::string* pref_name = content::Details<std::string>(details).ptr();
+    if (*pref_name == prefs::kClearPluginLSODataEnabled) {
+      // This preference is stored in Local State, not in the user preferences.
+      UpdateClearPluginLSOData();
+      return;
+    }
+    NotifyPrefChanged(*pref_name, std::string());
+  }
+}
+
+void CoreOptionsHandler::RegisterMessages() {
+  web_ui_->RegisterMessageCallback("coreOptionsInitialize",
+      base::Bind(&CoreOptionsHandler::HandleInitialize,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("fetchPrefs",
+      base::Bind(&CoreOptionsHandler::HandleFetchPrefs,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("observePrefs",
+      base::Bind(&CoreOptionsHandler::HandleObservePrefs,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setBooleanPref",
+      base::Bind(&CoreOptionsHandler::HandleSetBooleanPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setIntegerPref",
+      base::Bind(&CoreOptionsHandler::HandleSetIntegerPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setDoublePref",
+      base::Bind(&CoreOptionsHandler::HandleSetDoublePref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setStringPref",
+      base::Bind(&CoreOptionsHandler::HandleSetStringPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setURLPref",
+      base::Bind(&CoreOptionsHandler::HandleSetURLPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("setListPref",
+      base::Bind(&CoreOptionsHandler::HandleSetListPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("clearPref",
+      base::Bind(&CoreOptionsHandler::HandleClearPref,
+                 base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("coreOptionsUserMetricsAction",
+      base::Bind(&CoreOptionsHandler::HandleUserMetricsAction,
+                 base::Unretained(this)));
+}
+
+void CoreOptionsHandler::HandleInitialize(const ListValue* args) {
+  DCHECK(handlers_host_);
+  handlers_host_->InitializeHandlers();
+}
+
+base::Value* CoreOptionsHandler::FetchPref(const std::string& pref_name) {
+  PrefService* pref_service = Profile::FromWebUI(web_ui_)->GetPrefs();
+
+  const PrefService::Preference* pref =
+      pref_service->FindPreference(pref_name.c_str());
+  if (!pref)
+    return base::Value::CreateNullValue();
+
+  return CreateValueForPref(pref, NULL);
+}
+
+void CoreOptionsHandler::ObservePref(const std::string& pref_name) {
+  registrar_.Add(pref_name.c_str(), this);
+}
+
+void CoreOptionsHandler::SetPref(const std::string& pref_name,
+                                 const base::Value* value,
+                                 const std::string& metric) {
+  PrefService* pref_service = Profile::FromWebUI(web_ui_)->GetPrefs();
+
+  switch (value->GetType()) {
+    case base::Value::TYPE_BOOLEAN:
+    case base::Value::TYPE_INTEGER:
+    case base::Value::TYPE_DOUBLE:
+    case base::Value::TYPE_STRING:
+      pref_service->Set(pref_name.c_str(), *value);
+      break;
+
+    default:
+      NOTREACHED();
+      return;
+  }
+
+  pref_service->ScheduleSavePersistentPrefs();
+
+  ProcessUserMetric(value, metric);
+}
+
+void CoreOptionsHandler::ClearPref(const std::string& pref_name,
+                                   const std::string& metric) {
+  PrefService* pref_service = Profile::FromWebUI(web_ui_)->GetPrefs();
+  pref_service->ClearPref(pref_name.c_str());
+  pref_service->ScheduleSavePersistentPrefs();
+
+  if (!metric.empty())
+    content::RecordComputedAction(metric);
+}
+
+void CoreOptionsHandler::ProcessUserMetric(const base::Value* value,
+                                           const std::string& metric) {
+  if (metric.empty())
+    return;
+
+  std::string metric_string = metric;
+  if (value->IsType(base::Value::TYPE_BOOLEAN)) {
+    bool bool_value;
+    CHECK(value->GetAsBoolean(&bool_value));
+    metric_string += bool_value ? "_Enable" : "_Disable";
+  }
+
+  content::RecordComputedAction(metric_string);
+}
+
+void CoreOptionsHandler::NotifyPrefChanged(
+    const std::string& pref_name,
+    const std::string& controlling_pref_name) {
+  const PrefService* pref_service = Profile::FromWebUI(web_ui_)->GetPrefs();
+  const PrefService::Preference* pref =
+      pref_service->FindPreference(pref_name.c_str());
+  if (!pref)
+    return;
+  const PrefService::Preference* controlling_pref =
+      !controlling_pref_name.empty() ?
+          pref_service->FindPreference(controlling_pref_name.c_str()) : NULL;
+  std::pair<PreferenceCallbackMap::const_iterator,
+            PreferenceCallbackMap::const_iterator> range;
+  range = pref_callback_map_.equal_range(pref_name);
+  for (PreferenceCallbackMap::const_iterator iter = range.first;
+       iter != range.second; ++iter) {
+    const std::wstring& callback_function = iter->second;
+    ListValue result_value;
+    result_value.Append(base::Value::CreateStringValue(pref_name.c_str()));
+    result_value.Append(CreateValueForPref(pref, controlling_pref));
+    web_ui_->CallJavascriptFunction(WideToASCII(callback_function),
+                                    result_value);
+  }
+}
+
+DictionaryValue* CoreOptionsHandler::CreateValueForPref(
+    const PrefService::Preference* pref,
+    const PrefService::Preference* controlling_pref) {
+  DictionaryValue* dict = new DictionaryValue;
+  dict->Set("value", pref->GetValue()->DeepCopy());
+  if (!controlling_pref)  // No controlling pref is managing actual pref.
+    controlling_pref = pref;  // This means pref is controlling itself.
+  if (controlling_pref->IsManaged()) {
+    dict->SetString("controlledBy", "policy");
+  } else if (controlling_pref->IsExtensionControlled()) {
+    dict->SetString("controlledBy", "extension");
+  } else if (controlling_pref->IsRecommended()) {
+    dict->SetString("controlledBy", "recommended");
+  }
+  dict->SetBoolean("disabled", !controlling_pref->IsUserModifiable());
+  return dict;
+}
+
+void CoreOptionsHandler::StopObservingPref(const std::string& path) {
+  registrar_.Remove(path.c_str(), this);
+}
+
+void CoreOptionsHandler::HandleFetchPrefs(const ListValue* args) {
+  // First param is name of callback function, so, there needs to be at least
+  // one more element for the actual preference identifier.
+  DCHECK_GE(static_cast<int>(args->GetSize()), 2);
+
+  // Get callback JS function name.
+  base::Value* callback;
+  if (!args->Get(0, &callback) || !callback->IsType(base::Value::TYPE_STRING))
+    return;
+
+  string16 callback_function;
+  if (!callback->GetAsString(&callback_function))
+    return;
+
+  // Get the list of name for prefs to build the response dictionary.
+  DictionaryValue result_value;
+  base::Value* list_member;
+
+  for (size_t i = 1; i < args->GetSize(); i++) {
+    if (!args->Get(i, &list_member))
+      break;
+
+    if (!list_member->IsType(base::Value::TYPE_STRING))
+      continue;
+
+    std::string pref_name;
+    if (!list_member->GetAsString(&pref_name))
+      continue;
+
+    result_value.Set(pref_name.c_str(), FetchPref(pref_name));
+  }
+  web_ui_->CallJavascriptFunction(UTF16ToASCII(callback_function),
+                                  result_value);
+}
+
+void CoreOptionsHandler::HandleObservePrefs(const ListValue* args) {
+  // First param is name is JS callback function name, the rest are pref
+  // identifiers that we are observing.
+  DCHECK_GE(static_cast<int>(args->GetSize()), 2);
+
+  // Get preference change callback function name.
+  string16 callback_func_name;
+  if (!args->GetString(0, &callback_func_name))
+    return;
+
+  // Get all other parameters - pref identifiers.
+  for (size_t i = 1; i < args->GetSize(); i++) {
+    base::Value* list_member;
+    if (!args->Get(i, &list_member))
+      break;
+
+    // Just ignore bad pref identifiers for now.
+    std::string pref_name;
+    if (!list_member->IsType(base::Value::TYPE_STRING) ||
+        !list_member->GetAsString(&pref_name))
+      continue;
+
+    if (pref_callback_map_.find(pref_name) == pref_callback_map_.end())
+      ObservePref(pref_name);
+
+    pref_callback_map_.insert(
+        PreferenceCallbackMap::value_type(pref_name,
+                                          UTF16ToWideHack(callback_func_name)));
+  }
+}
+
+void CoreOptionsHandler::HandleSetBooleanPref(const ListValue* args) {
+  HandleSetPref(args, TYPE_BOOLEAN);
+}
+
+void CoreOptionsHandler::HandleSetIntegerPref(const ListValue* args) {
+  HandleSetPref(args, TYPE_INTEGER);
+}
+
+void CoreOptionsHandler::HandleSetDoublePref(const ListValue* args) {
+  HandleSetPref(args, TYPE_DOUBLE);
+}
+
+void CoreOptionsHandler::HandleSetStringPref(const ListValue* args) {
+  HandleSetPref(args, TYPE_STRING);
+}
+
+void CoreOptionsHandler::HandleSetURLPref(const ListValue* args) {
+  HandleSetPref(args, TYPE_URL);
+}
+
+void CoreOptionsHandler::HandleSetListPref(const ListValue* args) {
+  HandleSetPref(args, TYPE_LIST);
+}
+
+void CoreOptionsHandler::HandleSetPref(const ListValue* args, PrefType type) {
+  DCHECK_GT(static_cast<int>(args->GetSize()), 1);
+
+  std::string pref_name;
+  if (!args->GetString(0, &pref_name))
+    return;
+
+  base::Value* value;
+  if (!args->Get(1, &value))
+    return;
+
+  scoped_ptr<base::Value> temp_value;
+
+  switch (type) {
+    case TYPE_BOOLEAN:
+      CHECK_EQ(base::Value::TYPE_BOOLEAN, value->GetType());
+      break;
+    case TYPE_INTEGER: {
+      // In JS all numbers are doubles.
+      double double_value;
+      CHECK(value->GetAsDouble(&double_value));
+      int int_value = static_cast<int>(double_value);
+      temp_value.reset(base::Value::CreateIntegerValue(int_value));
+      value = temp_value.get();
+      break;
+    }
+    case TYPE_DOUBLE:
+      CHECK_EQ(base::Value::TYPE_DOUBLE, value->GetType());
+      break;
+    case TYPE_STRING:
+      CHECK_EQ(base::Value::TYPE_STRING, value->GetType());
+      break;
+    case TYPE_URL: {
+      std::string original;
+      CHECK(value->GetAsString(&original));
+      GURL fixed = URLFixerUpper::FixupURL(original, std::string());
+      temp_value.reset(base::Value::CreateStringValue(fixed.spec()));
+      value = temp_value.get();
+      break;
+    }
+    case TYPE_LIST: {
+      // In case we have a List pref we got a JSON string.
+      std::string json_string;
+      CHECK(value->GetAsString(&json_string));
+      temp_value.reset(
+          base::JSONReader().JsonToValue(json_string,
+                                         false,  // no check_root
+                                         false));  // no trailing comma
+      value = temp_value.get();
+      CHECK_EQ(base::Value::TYPE_LIST, value->GetType());
+      break;
+    }
+    default:
+      NOTREACHED();
+  }
+
+  std::string metric;
+  if (args->GetSize() > 2 && !args->GetString(2, &metric))
+    LOG(WARNING) << "Invalid metric parameter: " << pref_name;
+  SetPref(pref_name, value, metric);
+}
+
+void CoreOptionsHandler::HandleClearPref(const ListValue* args) {
+  DCHECK_GT(static_cast<int>(args->GetSize()), 0);
+
+  std::string pref_name;
+  if (!args->GetString(0, &pref_name))
+    return;
+
+  std::string metric;
+  if (args->GetSize() > 1)
+    args->GetString(1, &metric);
+
+  ClearPref(pref_name, metric);
+}
+
+void CoreOptionsHandler::HandleUserMetricsAction(const ListValue* args) {
+  std::string metric = UTF16ToUTF8(ExtractStringValue(args));
+  if (!metric.empty())
+    content::RecordComputedAction(metric);
+}
+
+void CoreOptionsHandler::UpdateClearPluginLSOData() {
+  scoped_ptr<base::Value> enabled(
+      base::Value::CreateBooleanValue(
+          clear_plugin_lso_data_enabled_.GetValue()));
+  web_ui_->CallJavascriptFunction(
+      "OptionsPage.setClearPluginLSODataEnabled", *enabled);
+}