Option dialog DOM UI - ChromeOS System page.

chrome/browser/dom_ui/core_options_handler.cc

+// Copyright (c) 2010 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/dom_ui/core_options_handler.h"
+
+#include "app/l10n_util.h"
+#include "app/resource_bundle.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/common/notification_service.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/browser/pref_service.h"
+#include "chrome/browser/profile.h"
+#include "grit/browser_resources.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "grit/locale_settings.h"
+#include "grit/theme_resources.h"
+
+CoreOptionsHandler::CoreOptionsHandler() {
+}
+
+void CoreOptionsHandler::GetLocalizedValues(
+    DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+  // Main
+  localized_strings->SetString(L"title",
+      l10n_util::GetStringF(IDS_OPTIONS_DIALOG_TITLE,
+          l10n_util::GetString(IDS_PRODUCT_NAME)));
+
+#if defined(OS_CHROMEOS)
+  localized_strings->SetString(L"systemPage",
+      l10n_util::GetString(IDS_OPTIONS_SYSTEM_TAB_LABEL));
+  localized_strings->SetString(L"internetPage",
+      l10n_util::GetString(IDS_OPTIONS_INTERNET_TAB_LABEL));
+#endif
+
+  localized_strings->SetString(L"basicsPage",
+      l10n_util::GetString(IDS_OPTIONS_GENERAL_TAB_LABEL));
+  localized_strings->SetString(L"personalStuffPage",
+      l10n_util::GetString(IDS_OPTIONS_CONTENT_TAB_LABEL));
+  localized_strings->SetString(L"underHoodPage",
+      l10n_util::GetString(IDS_OPTIONS_ADVANCED_TAB_LABEL));
+}
+
+void CoreOptionsHandler::Observe(NotificationType type,
+                                 const NotificationSource& source,
+                                 const NotificationDetails& details) {
+  if (type == NotificationType::PREF_CHANGED)
+    NotifyPrefChanged(Details<std::wstring>(details).ptr());
+}
+
+void CoreOptionsHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("fetchPrefs",
+      NewCallback(this, &CoreOptionsHandler::HandleFetchPrefs));
+  dom_ui_->RegisterMessageCallback("observePrefs",
+      NewCallback(this, &CoreOptionsHandler::HandleFetchPrefs));
+  dom_ui_->RegisterMessageCallback("setBooleanPref",
+      NewCallback(this, &CoreOptionsHandler::HandleSetBooleanPref));
+  dom_ui_->RegisterMessageCallback("setIntegerPref",
+      NewCallback(this, &CoreOptionsHandler::HandleSetIntegerPref));
+  dom_ui_->RegisterMessageCallback("setStringPref",
+      NewCallback(this, &CoreOptionsHandler::HandleSetStringPref));
+}
+
+
+void CoreOptionsHandler::HandleFetchPrefs(const Value* value) {
+  if (!value || !value->IsType(Value::TYPE_LIST))
+    return;
+
+  const ListValue* param_values = static_cast<const ListValue*>(value);
+
+  // First param is name of callback function, the second one is the value of
+  // context that is just passed through - so, there needs to be at least one
+  // more for the actual preference identifier.
+  const size_t kMinFetchPrefsParamCount = 3;
+  if (param_values->GetSize() < kMinFetchPrefsParamCount)
+    return;
+
+  size_t idx = param_values->GetSize();
+  LOG(INFO) << "param_values->GetSize() = " << idx;
+  // Get callback JS function name.
+  Value* callback;
+  if (!param_values->Get(0, &callback) || !callback->IsType(Value::TYPE_STRING))
+    return;
+
+  std::wstring callback_function;
+  if (!callback->GetAsString(&callback_function))
+    return;
+
+  // Get context param (just passthrough value)
+  Value* context;
+  if (!param_values->Get(1, &context) || !context)
+    return;
+
+  // Get the list of name for prefs to build the response dictionary.
+  DictionaryValue result_value;
+  Value* list_member;
+  DCHECK(dom_ui_);
+  PrefService* pref_service = dom_ui_->GetProfile()->GetPrefs();
+
+  for (size_t i = 2; i < param_values->GetSize(); i++) {
+    if (!param_values->Get(i, &list_member))
+      break;
+
+    if (!list_member->IsType(Value::TYPE_STRING))
+      continue;
+
+    std::wstring pref_name;
+    if (!list_member->GetAsString(&pref_name))
+      continue;
+
+    const PrefService::Preference* pref =
+        pref_service->FindPreference(pref_name.c_str());
+    result_value.Set(pref_name.c_str(),
+        pref ? pref->GetValue()->DeepCopy() : Value::CreateNullValue());
+  }
+  dom_ui_->CallJavascriptFunction(callback_function.c_str(), *context,
+                                  result_value);
+}
+
+void CoreOptionsHandler::HandleObservePefs(const Value* value) {
+  if (!value || !value->IsType(Value::TYPE_LIST))
+    return;
+
+  DCHECK(dom_ui_);
+  PrefService* pref_service = dom_ui_->GetProfile()->GetPrefs();
+  DictionaryValue result_value;
+  const ListValue* list_value = static_cast<const ListValue*>(value);
+  Value* list_member;
+  for (size_t i = 0; i < list_value->GetSize(); i++) {
+    if (!list_value->Get(i, &list_member))
+      break;
+
+    if (!list_member->IsType(Value::TYPE_STRING))
+      continue;
+
+    std::wstring pref_name;
+    if (!list_member->GetAsString(&pref_name))
+      continue;
+
+    pref_service->AddPrefObserver(pref_name.c_str(), this);
+  }
+}
+
+void CoreOptionsHandler::HandleSetBooleanPref(const Value* value) {
+  HandleSetPref(value, Value::TYPE_BOOLEAN);
+}
+
+void CoreOptionsHandler::HandleSetIntegerPref(const Value* value) {
+  HandleSetPref(value, Value::TYPE_INTEGER);
+}
+
+void CoreOptionsHandler::HandleSetStringPref(const Value* value) {
+  HandleSetPref(value, Value::TYPE_STRING);
+}
+
+void CoreOptionsHandler::HandleSetPref(const Value* value,
+                                       Value::ValueType type) {
+  if (!value || !value->IsType(Value::TYPE_LIST))
+    return;
+  const ListValue* param_values = static_cast<const ListValue*>(value);
+  size_t size = param_values->GetSize();
+  LOG(INFO) << "Array size = " << size;
+  if (param_values->GetSize() != 2)
+    return;
+
+  DCHECK(dom_ui_);
+  PrefService* pref_service = dom_ui_->GetProfile()->GetPrefs();
+
+  Value* name_element;
+  std::wstring pref_name;
+  if (!param_values->Get(0, &name_element) ||
+      !name_element->IsType(Value::TYPE_STRING) ||
+      !name_element->GetAsString(&pref_name))
+    return;
+
+  Value* value_element;
+  std::string value_string;
+  if (!param_values->Get(1, &value_element) ||
+      !value_element->IsType(Value::TYPE_STRING) ||
+      !value_element->GetAsString(&value_string))
+    return;
+
+  switch (type) {
+    case Value::TYPE_BOOLEAN:
+      pref_service->SetBoolean(pref_name.c_str(), value_string == "true");
+      break;
+    case Value::TYPE_INTEGER:
+      int int_value;
+      if (StringToInt(value_string, &int_value))
+        pref_service->SetInteger(pref_name.c_str(), int_value);
+      break;
+    case Value::TYPE_STRING:
+      pref_service->SetString(pref_name.c_str(), UTF8ToWide(value_string));
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
+void CoreOptionsHandler::NotifyPrefChanged(const std::wstring* pref_name) {
+  DCHECK(dom_ui_);
+  PrefService* pref_service = dom_ui_->GetProfile()->GetPrefs();
+  const PrefService::Preference* pref =
+      pref_service->FindPreference(pref_name->c_str());
+  if (pref) {
+    DictionaryValue result_value;
+    result_value.Set(pref_name->c_str(), pref->GetValue()->DeepCopy());
+    dom_ui_->CallJavascriptFunction(L"prefsChanged", result_value);
+  }
+}