Convert chrome://policy to new WebUI style

chrome/browser/ui/webui/policy_ui.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/policy_ui.h"
 
-#include <vector>
-
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
-#include "base/hash_tables.h"
-#include "base/stl_util.h"
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/string16.h"
 #include "base/time.h"
-#include "base/utf_string_conversions.h"
+#include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
 #include "chrome/browser/policy/cloud_policy_client.h"
+#include "chrome/browser/policy/cloud_policy_constants.h"
 #include "chrome/browser/policy/cloud_policy_core.h"
 #include "chrome/browser/policy/cloud_policy_refresh_scheduler.h"
 #include "chrome/browser/policy/cloud_policy_store.h"
 #include "chrome/browser/policy/cloud_policy_validator.h"
+#include "chrome/browser/policy/configuration_policy_handler_list.h"
+#include "chrome/browser/policy/device_local_account_policy_service.h"
 #include "chrome/browser/policy/message_util.h"
 #include "chrome/browser/policy/policy_error_map.h"
+#include "chrome/browser/policy/policy_map.h"
 #include "chrome/browser/policy/policy_service.h"
+#include "chrome/browser/policy/policy_types.h"
 #include "chrome/browser/policy/proto/device_management_backend.pb.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/pref_names.h"
 #include "chrome/common/time_format.h"
 #include "chrome/common/url_constants.h"
-#include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
+#include "content/public/browser/web_ui_message_handler.h"
+#include "google_apis/gaia/gaia_auth_util.h"
 #include "grit/browser_resources.h"
 #include "grit/generated_resources.h"
+#include "policy/policy_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/policy/device_cloud_policy_manager_chromeos.h"
 #include "chrome/browser/policy/device_local_account_policy_service.h"
 #include "chrome/browser/policy/user_cloud_policy_manager_chromeos.h"
 #else
 #include "chrome/browser/policy/user_cloud_policy_manager.h"
 #include "chrome/browser/policy/user_cloud_policy_manager_factory.h"
 #endif
 
 namespace em = enterprise_management;
 
-const char PolicyUIHandler::kLevel[] = "level";
-const char PolicyUIHandler::kName[] = "name";
-const char PolicyUIHandler::kScope[] = "scope";
-const char PolicyUIHandler::kSet[] = "set";
-const char PolicyUIHandler::kStatus[] = "status";
-const char PolicyUIHandler::kValue[] = "value";
-
 namespace {
 
 content::WebUIDataSource* CreatePolicyUIHTMLSource() {
   content::WebUIDataSource* source =
       content::WebUIDataSource::Create(chrome::kChromeUIPolicyHost);
 
   // Localized strings.
+  source->AddLocalizedString("title", IDS_POLICY_TITLE);
+  source->AddLocalizedString("filterPlaceholder",
+                             IDS_POLICY_FILTER_PLACEHOLDER);
+  source->AddLocalizedString("reloadPolicies", IDS_POLICY_RELOAD_POLICIES);
+  source->AddLocalizedString("status", IDS_POLICY_STATUS);
+  source->AddLocalizedString("statusDevice", IDS_POLICY_STATUS_DEVICE);
+  source->AddLocalizedString("statusUser", IDS_POLICY_STATUS_USER);
+  source->AddLocalizedString("labelDomain", IDS_POLICY_LABEL_DOMAIN);
+  source->AddLocalizedString("labelUsername", IDS_POLICY_LABEL_USERNAME);
+  source->AddLocalizedString("labelClientId", IDS_POLICY_LABEL_CLIENT_ID);
+  source->AddLocalizedString("labelTimeSinceLastRefresh",
+                             IDS_POLICY_LABEL_TIME_SINCE_LAST_REFRESH);
+  source->AddLocalizedString("labelRefreshInterval",
+                             IDS_POLICY_LABEL_REFRESH_INTERVAL);
+  source->AddLocalizedString("labelStatus", IDS_POLICY_LABEL_STATUS);
+  source->AddLocalizedString("showUnset", IDS_POLICY_SHOW_UNSET);
+  source->AddLocalizedString("noPoliciesSet", IDS_POLICY_NO_POLICIES_SET);
+  source->AddLocalizedString("headerScope", IDS_POLICY_HEADER_SCOPE);
+  source->AddLocalizedString("headerLevel", IDS_POLICY_HEADER_LEVEL);
+  source->AddLocalizedString("headerName", IDS_POLICY_HEADER_NAME);
+  source->AddLocalizedString("headerValue", IDS_POLICY_HEADER_VALUE);
+  source->AddLocalizedString("headerStatus", IDS_POLICY_HEADER_STATUS);
+  source->AddLocalizedString("showExpandedValue",
+                             IDS_POLICY_SHOW_EXPANDED_VALUE);
+  source->AddLocalizedString("hideExpandedValue",
+                             IDS_POLICY_HIDE_EXPANDED_VALUE);
+  source->AddLocalizedString("scopeUser", IDS_POLICY_SCOPE_USER);
+  source->AddLocalizedString("scopeDevice", IDS_POLICY_SCOPE_DEVICE);
+  source->AddLocalizedString("levelRecommended", IDS_POLICY_LEVEL_RECOMMENDED);
+  source->AddLocalizedString("levelMandatory", IDS_POLICY_LEVEL_MANDATORY);
+  source->AddLocalizedString("ok", IDS_POLICY_OK);
+  source->AddLocalizedString("unset", IDS_POLICY_UNSET);
+  source->AddLocalizedString("unknown", IDS_POLICY_UNKNOWN);
+
   source->SetUseJsonJSFormatV2();
-  source->AddLocalizedString("policyTitle", IDS_POLICY_TITLE);
-  source->AddLocalizedString("statusPaneTitle", IDS_POLICY_STATUS_TITLE);
-  source->AddLocalizedString("fetchPoliciesText", IDS_POLICY_FETCH);
-  source->AddLocalizedString("devicePoliciesBoxTitle",
-                             IDS_POLICY_DEVICE_POLICIES);
-  source->AddLocalizedString("userPoliciesBoxTitle", IDS_POLICY_USER_POLICIES);
-  source->AddLocalizedString("enrollmentDomainText",
-                             IDS_POLICY_ENROLLMENT_DOMAIN);
-  source->AddLocalizedString("clientIdText", IDS_POLICY_CLIENT_ID);
-  source->AddLocalizedString("usernameText", IDS_POLICY_USERNAME);
-  source->AddLocalizedString("timeSinceLastFetchText", IDS_POLICY_LAST_FETCHED);
-  source->AddLocalizedString("fetchIntervalText", IDS_POLICY_FETCH_INTERVAL);
-  source->AddLocalizedString("serverStatusText", IDS_POLICY_SERVER_STATUS);
-  source->AddLocalizedString("showUnsentPoliciesText", IDS_POLICY_SHOW_UNSENT);
-  source->AddLocalizedString("filterPoliciesText", IDS_POLICY_FILTER);
-  source->AddLocalizedString("noPoliciesSet",IDS_POLICY_NO_POLICIES_SET);
-  source->AddLocalizedString("appliesToTableHeader", IDS_POLICY_APPLIES_TO);
-  source->AddLocalizedString("policyLevelTableHeader", IDS_POLICY_LEVEL);
-  source->AddLocalizedString("policyNameTableHeader", IDS_POLICY_ENTRY_NAME);
-  source->AddLocalizedString("policyValueTableHeader", IDS_POLICY_ENTRY_VALUE);
-  source->AddLocalizedString("policyStatusTableHeader",
-                             IDS_POLICY_ENTRY_STATUS);
-  source->AddLocalizedString("showMoreText", IDS_POLICY_SHOW_MORE);
-  source->AddLocalizedString("hideText", IDS_POLICY_HIDE);
   source->SetJsonPath("strings.js");
 
   // Add required resources.
   source->AddResourcePath("policy.css", IDR_POLICY_CSS);
   source->AddResourcePath("policy.js", IDR_POLICY_JS);
+  source->AddResourcePath("uber_utils.js", IDR_UBER_UTILS_JS);
   source->SetDefaultResource(IDR_POLICY_HTML);
 
   return source;
 }
 
-string16 GetPolicyScopeString(policy::PolicyScope scope) {
-  switch (scope) {
-    case policy::POLICY_SCOPE_USER:
-      return l10n_util::GetStringUTF16(IDS_POLICY_SCOPE_USER);
-    case policy::POLICY_SCOPE_MACHINE:
-      return l10n_util::GetStringUTF16(IDS_POLICY_SCOPE_MACHINE);
-  }
-  NOTREACHED();
-  return string16();
+void GetStatusFromCore(const policy::CloudPolicyCore* core,
+                       base::DictionaryValue* dict) {
+  const policy::CloudPolicyStore* store = core->store();
+  const policy::CloudPolicyClient* client = core->client();
+  const policy::CloudPolicyRefreshScheduler* refresh_scheduler =
+        core->refresh_scheduler();
+
+  bool no_error = store->status() == policy::CloudPolicyStore::STATUS_OK &&
+                  client && client->status() == policy::DM_STATUS_SUCCESS;
+  string16 status = store->status() == policy::CloudPolicyStore::STATUS_OK &&
+                    client && client->status() != policy::DM_STATUS_SUCCESS ?
+                        policy::FormatDeviceManagementStatus(client->status()) :
+                        policy::FormatStoreStatus(store->status(),
+                                                  store->validation_status());
+  const em::PolicyData* policy = store->policy();
+  std::string client_id = policy ? policy->device_id() : std::string();
+  std::string username = policy ? policy->username() : std::string();
+  base::TimeDelta refresh_interval =
+      base::TimeDelta::FromMilliseconds(refresh_scheduler ?
+          refresh_scheduler->refresh_delay() :
+          policy::CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs);
+  base::Time last_refresh_time = refresh_scheduler ?
+      refresh_scheduler->last_refresh() : base::Time();
+
+  dict->SetBoolean("error", !no_error);
+  dict->SetString("status", status);
+  dict->SetString("clientId", client_id);
+  dict->SetString("username", username);
+  dict->SetString("refreshInterval",
+                  TimeFormat::TimeRemainingShort(refresh_interval));
+  dict->SetString("timeSinceLastRefresh", last_refresh_time.is_null() ?
+      l10n_util::GetStringUTF16(IDS_POLICY_NEVER_FETCHED) :
+      TimeFormat::TimeElapsed(base::Time::NowFromSystemTime() -
+                              last_refresh_time));
 }
 
-string16 GetPolicyLevelString(policy::PolicyLevel level) {
-  switch (level) {
-    case policy::POLICY_LEVEL_RECOMMENDED:
-      return l10n_util::GetStringUTF16(IDS_POLICY_LEVEL_RECOMMENDED);
-    case policy::POLICY_LEVEL_MANDATORY:
-      return l10n_util::GetStringUTF16(IDS_POLICY_LEVEL_MANDATORY);
-  }
-  NOTREACHED();
-  return string16();
-}
-
-base::DictionaryValue* GetPolicyDetails(
-    const policy::PolicyDefinitionList::Entry* policy_definition,
-    const policy::PolicyMap::Entry* policy_value,
-    const string16& error_message) {
-  base::DictionaryValue* details = new base::DictionaryValue();
-  details->SetString(PolicyUIHandler::kName,
-                     ASCIIToUTF16(policy_definition->name));
-  details->SetBoolean(PolicyUIHandler::kSet, true);
-  details->SetString(PolicyUIHandler::kLevel,
-                     GetPolicyLevelString(policy_value->level));
-  details->SetString(PolicyUIHandler::kScope,
-                     GetPolicyScopeString(policy_value->scope));
-  details->Set(PolicyUIHandler::kValue, policy_value->value->DeepCopy());
-  if (error_message.empty()) {
-    details->SetString(PolicyUIHandler::kStatus,
-                       l10n_util::GetStringUTF16(IDS_OK));
-  } else {
-    details->SetString(PolicyUIHandler::kStatus, error_message);
-  }
-  return details;
-}
-
-base::DictionaryValue* GetPolicyErrorDetails(const std::string& policy_name,
-                                             bool is_set) {
-  base::DictionaryValue* details = new base::DictionaryValue();
-  details->SetString(PolicyUIHandler::kName, ASCIIToUTF16(policy_name));
-  details->SetBoolean(PolicyUIHandler::kSet, is_set);
-  details->SetString(PolicyUIHandler::kLevel, "");
-  details->SetString(PolicyUIHandler::kScope, "");
-  details->SetString(PolicyUIHandler::kValue, "");
-  if (is_set)
-    details->SetString(PolicyUIHandler::kStatus,
-                       l10n_util::GetStringUTF16(IDS_POLICY_UNKNOWN));
-  else
-    details->SetString(PolicyUIHandler::kStatus,
-                       l10n_util::GetStringUTF16(IDS_POLICY_NOT_SET));
-  return details;
+void ExtractDomainFromUsername(base::DictionaryValue* dict) {
+  std::string username;
+  dict->GetString("username", &username);
+  if (!username.empty())
+    dict->SetString("domain", gaia::ExtractDomainName(username));
 }
 
 }  // namespace
 
-// An interface for querying status data.
+// An interface for querying the status of cloud policy.
 class CloudPolicyStatusProvider {
  public:
-  CloudPolicyStatusProvider() {}
-  virtual ~CloudPolicyStatusProvider() {}
+  CloudPolicyStatusProvider();
+  virtual ~CloudPolicyStatusProvider();
 
   // Sets a callback to invoke upon status changes.
-  void SetStatusChangeCallback(const base::Closure& callback) {
-    callback_ = callback;
-  }
+  void SetStatusChangeCallback(const base::Closure& callback);
 
-  // Fills |status_dict| and returns true if the status is relevant.
-  virtual bool GetStatus(base::DictionaryValue* status_dict) {
-    return false;
-  }
+  virtual void GetStatus(base::DictionaryValue* dict);
 
  protected:
-  void NotifyStatusChange() {
-    if (!callback_.is_null())
-      callback_.Run();
-  }
+  void NotifyStatusChange();
 
  private:
   base::Closure callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPolicyStatusProvider);
 };
 
 // Status provider implementation that pulls cloud policy status from a
 // CloudPolicyCore instance provided at construction time. Also listens for
 // changes on that CloudPolicyCore and reports them through the status change
 // callback.
 class CloudPolicyCoreStatusProvider
     : public CloudPolicyStatusProvider,
       public policy::CloudPolicyStore::Observer {
  public:
-  explicit CloudPolicyCoreStatusProvider(policy::CloudPolicyCore* core)
-      : core_(core) {
-    core_->store()->AddObserver(this);
-  }
-  virtual ~CloudPolicyCoreStatusProvider() {
-    core_->store()->RemoveObserver(this);
-  }
+  explicit CloudPolicyCoreStatusProvider(policy::CloudPolicyCore* core);
+  virtual ~CloudPolicyCoreStatusProvider();
 
-  // CloudPolicyStatusProvider:
-  virtual bool GetStatus(base::DictionaryValue* status_dict) OVERRIDE {
-    return GetStatusFromCore(core_, status_dict);
-  }
+  // policy::CloudPolicyStore::Observer implementation.
+  virtual void OnStoreLoaded(policy::CloudPolicyStore* store) OVERRIDE;
+  virtual void OnStoreError(policy::CloudPolicyStore* store) OVERRIDE;
 
-  // policy::CloudPolicyStore::Observer:
-  virtual void OnStoreLoaded(policy::CloudPolicyStore* store) OVERRIDE {
-    NotifyStatusChange();
-  }
-  virtual void OnStoreError(policy::CloudPolicyStore* store) OVERRIDE {
-    NotifyStatusChange();
-  }
-
-  // Extracts status information from |core| and writes it to |status_dict|.
-  static bool GetStatusFromCore(policy::CloudPolicyCore* core,
-                                base::DictionaryValue* status_dict);
-
- private:
+ protected:
   // Policy status is read from the CloudPolicyClient, CloudPolicyStore and
   // CloudPolicyRefreshScheduler hosted by this |core_|.
   policy::CloudPolicyCore* core_;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPolicyCoreStatusProvider);
 };
 
-// static
-bool CloudPolicyCoreStatusProvider::GetStatusFromCore(
-    policy::CloudPolicyCore* core,
-    base::DictionaryValue* status_dict) {
-  policy::CloudPolicyStore* store = core->store();
-  policy::CloudPolicyClient* client = core->client();
-  policy::CloudPolicyRefreshScheduler* refresh_scheduler =
-      core->refresh_scheduler();
+// A cloud policy status provider for user policy.
+class UserPolicyStatusProvider : public CloudPolicyCoreStatusProvider {
+ public:
+  explicit UserPolicyStatusProvider(policy::CloudPolicyCore* core);
+  virtual ~UserPolicyStatusProvider();
 
-  string16 status;
-  if (store->status() == policy::CloudPolicyStore::STATUS_OK &&
-      client && client->status() != policy::DM_STATUS_SUCCESS) {
-    status = policy::FormatDeviceManagementStatus(client->status());
-  } else {
-    status = policy::FormatStoreStatus(store->status(),
-                                       store->validation_status());
-  }
-  status_dict->SetString("statusMessage", status);
+  // CloudPolicyCoreStatusProvider implementation.
+  virtual void GetStatus(base::DictionaryValue* dict) OVERRIDE;
 
-  base::Time last_refresh_time;
-  if (refresh_scheduler)
-    last_refresh_time = refresh_scheduler->last_refresh();
-  status_dict->SetString(
-      "timeSinceLastFetch",
-      last_refresh_time.is_null() ?
-          l10n_util::GetStringUTF16(IDS_POLICY_NEVER_FETCHED) :
-          TimeFormat::TimeElapsed(base::Time::NowFromSystemTime() -
-                                  last_refresh_time));
-
-  const em::PolicyData* policy = store->policy();
-  status_dict->SetString(
-      "clientId", policy ? ASCIIToUTF16(policy->device_id()) : string16());
-  status_dict->SetString(
-      "user", policy ? UTF8ToUTF16(policy->username()) : string16());
-
-  int64 interval = policy::CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs;
-  if (refresh_scheduler)
-    interval = refresh_scheduler->refresh_delay();
-  status_dict->SetString(
-      "fetchInterval",
-      TimeFormat::TimeRemainingShort(
-          base::TimeDelta::FromMilliseconds(interval)));
-
-  return store->is_managed();
-}
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UserPolicyStatusProvider);
+};
 
 #if defined(OS_CHROMEOS)
+// A cloud policy status provider for device policy.
+class DevicePolicyStatusProvider : public CloudPolicyCoreStatusProvider {
+ public:
+  explicit DevicePolicyStatusProvider(
+      policy::BrowserPolicyConnector* connector);
+  virtual ~DevicePolicyStatusProvider();
+
+  // CloudPolicyCoreStatusProvider implementation.
+  virtual void GetStatus(base::DictionaryValue* dict) OVERRIDE;
+
+ private:
+  std::string domain_;
+
+  DISALLOW_COPY_AND_ASSIGN(DevicePolicyStatusProvider);
+};
+
 // A cloud policy status provider that reads policy status from the policy core
 // associated with the device-local account specified by |account_id| at
 // construction time. The indirection via account ID and
 // DeviceLocalAccountPolicyService is necessary because the device-local account
 // may go away any time behind the scenes, at which point the status message
 // text will indicate CloudPolicyStore::STATUS_BAD_STATE.
 class DeviceLocalAccountPolicyStatusProvider
     : public CloudPolicyStatusProvider,
       public policy::DeviceLocalAccountPolicyService::Observer {
  public:
   DeviceLocalAccountPolicyStatusProvider(
       const std::string& account_id,
-      policy::DeviceLocalAccountPolicyService* service)
-      : account_id_(account_id),
-        service_(service) {
-    service_->AddObserver(this);
-  }
-  virtual ~DeviceLocalAccountPolicyStatusProvider() {
-    service_->RemoveObserver(this);
-  }
+      policy::DeviceLocalAccountPolicyService* service);
+  virtual ~DeviceLocalAccountPolicyStatusProvider();
 
-  // CloudPolicyStatusProvider:
-  virtual bool GetStatus(base::DictionaryValue* status_dict) OVERRIDE {
-    policy::DeviceLocalAccountPolicyBroker* broker =
-        service_->GetBrokerForAccount(account_id_);
-    if (broker) {
-      return CloudPolicyCoreStatusProvider::GetStatusFromCore(broker->core(),
-                                                              status_dict);
-    }
+  // CloudPolicyStatusProvider implementation.
+  virtual void GetStatus(base::DictionaryValue* dict) OVERRIDE;
 
-    status_dict->SetString("user", account_id_);
-    status_dict->SetString(
-        "statusMessage",
-        policy::FormatStoreStatus(
-            policy::CloudPolicyStore::STATUS_BAD_STATE,
-            policy::CloudPolicyValidatorBase::VALIDATION_OK));
-    return true;
-  }
-
-  // policy::DeviceLocalAccountPolicyService::Observer:
-  virtual void OnPolicyUpdated(const std::string& account_id) OVERRIDE {
-    if (account_id == account_id_)
-      NotifyStatusChange();
-  }
-  virtual void OnDeviceLocalAccountsChanged() OVERRIDE {
-    NotifyStatusChange();
-  }
+  // policy::DeviceLocalAccountPolicyService::Observer implementation.
+  virtual void OnPolicyUpdated(const std::string& account_id) OVERRIDE;
+  virtual void OnDeviceLocalAccountsChanged() OVERRIDE;
 
  private:
   const std::string account_id_;
   policy::DeviceLocalAccountPolicyService* service_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyStatusProvider);
 };
 #endif
 
-////////////////////////////////////////////////////////////////////////////////
-//
-// PolicyUIHandler
-//
-////////////////////////////////////////////////////////////////////////////////
+// The JavaScript message handler for the chrome://policy page.
+class PolicyUIHandler : public content::WebUIMessageHandler,
+                        public policy::PolicyService::Observer {
+ public:
+  PolicyUIHandler();
+  virtual ~PolicyUIHandler();
+
+  // content::WebUIMessageHandler implementation.
+  virtual void RegisterMessages() OVERRIDE;
+
+  // policy::PolicyService::Observer implementation.
+  virtual void OnPolicyUpdated(policy::PolicyDomain domain,
+                               const std::string& component_id,
+                               const policy::PolicyMap& previous,
+                               const policy::PolicyMap& current) OVERRIDE;
+
+ private:
+  // Send a dictionary containing the names of all known policies to the UI.
+  void SendPolicyNames() const;

[Mattias Nissler (ping if slow), 2013/02/04 16:05:16]

nit: newline

[bartfab (slow), 2013/02/04 17:11:04]

Done.

+  // Send information about the current policy values to the UI. For each policy
+  // whose value has been set, a dictionary containing the value and additional
+  // metadata is sent.
+  void SendPolicyValues() const;

[Mattias Nissler (ping if slow), 2013/02/04 16:05:16]

nit: newline

[bartfab (slow), 2013/02/04 17:11:04]

Done.

+  // Send the status of cloud policy to the UI. For each scope that has cloud
+  // policy enabled (device and/or user), a dictionary containing status
+  // information is sent.
+  void SendStatus() const;
+
+  void HandleInitialized(const base::ListValue* args);
+  void HandleReloadPolicies(const base::ListValue* args);
+
+  void OnRefreshPoliciesDone() const;
+
+  policy::PolicyService* GetPolicyService() const;
+
+  bool initialized_;
+  std::string device_domain_;
+  base::WeakPtrFactory<PolicyUIHandler> weak_factory_;
+
+  // Providers that supply status dictionaries for user and device policy,
+  // respectively. These are created on initialization time as appropriate for
+  // the platform (Chrome OS / desktop) and type of policy that is in effect.
+  scoped_ptr<CloudPolicyStatusProvider> user_status_provider_;
+  scoped_ptr<CloudPolicyStatusProvider> device_status_provider_;
+
+  DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
+};
+
+CloudPolicyStatusProvider::CloudPolicyStatusProvider() {
+}
+
+CloudPolicyStatusProvider::~CloudPolicyStatusProvider() {
+}
+
+void CloudPolicyStatusProvider::SetStatusChangeCallback(
+    const base::Closure& callback) {
+  callback_ = callback;
+}
+
+void CloudPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
+}
+
+void CloudPolicyStatusProvider::NotifyStatusChange() {
+  if (!callback_.is_null())
+    callback_.Run();
+}
+
+CloudPolicyCoreStatusProvider::CloudPolicyCoreStatusProvider(
+    policy::CloudPolicyCore* core) : core_(core) {
+  core_->store()->AddObserver(this);
+  // TODO(bartfab): Add an observer that watches for client errors. Observing
+  // core_->client() directly is not safe as the client may be destroyed and
+  // (re-)created anytime if the user signs in or out on desktop platforms.
+}
+
+CloudPolicyCoreStatusProvider::~CloudPolicyCoreStatusProvider() {
+  core_->store()->RemoveObserver(this);
+}
+
+void CloudPolicyCoreStatusProvider::OnStoreLoaded(
+    policy::CloudPolicyStore* store) {
+  NotifyStatusChange();
+}
+
+void CloudPolicyCoreStatusProvider::OnStoreError(
+    policy::CloudPolicyStore* store) {
+  NotifyStatusChange();
+}
+
+UserPolicyStatusProvider::UserPolicyStatusProvider(
+    policy::CloudPolicyCore* core) : CloudPolicyCoreStatusProvider(core) {
+}
+
+UserPolicyStatusProvider::~UserPolicyStatusProvider() {
+}
+
+void UserPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
+  if (!core_->store()->is_managed())
+    return;
+  GetStatusFromCore(core_, dict);
+  ExtractDomainFromUsername(dict);
+}
+
+#if defined(OS_CHROMEOS)
+DevicePolicyStatusProvider::DevicePolicyStatusProvider(
+    policy::BrowserPolicyConnector* connector)
+      : CloudPolicyCoreStatusProvider(
+            connector->GetDeviceCloudPolicyManager()->core()) {
+  domain_ = connector->GetEnterpriseDomain();
+}
+
+DevicePolicyStatusProvider::~DevicePolicyStatusProvider() {
+}
+
+void DevicePolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
+  GetStatusFromCore(core_, dict);
+  dict->SetString("domain", domain_);
+}
+
+DeviceLocalAccountPolicyStatusProvider::DeviceLocalAccountPolicyStatusProvider(
+    const std::string& account_id,
+    policy::DeviceLocalAccountPolicyService* service)
+      : account_id_(account_id),
+        service_(service) {
+  service_->AddObserver(this);
+}
+
+DeviceLocalAccountPolicyStatusProvider::
+    ~DeviceLocalAccountPolicyStatusProvider() {
+  service_->RemoveObserver(this);
+}
+
+void DeviceLocalAccountPolicyStatusProvider::GetStatus(
+    base::DictionaryValue* dict) {
+  const policy::DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForAccount(account_id_);
+  if (broker) {
+    GetStatusFromCore(broker->core(), dict);
+  } else {
+    dict->SetBoolean("error", true);
+    dict->SetString("status",
+                    policy::FormatStoreStatus(
+                        policy::CloudPolicyStore::STATUS_BAD_STATE,
+                        policy::CloudPolicyValidatorBase::VALIDATION_OK));
+    dict->SetString("username", account_id_);
+  }
+  ExtractDomainFromUsername(dict);
+  dict->SetBoolean("publicAccount", true);
+}
+
+void DeviceLocalAccountPolicyStatusProvider::OnPolicyUpdated(
+    const std::string& account_id) {
+  if (account_id == account_id_)
+    NotifyStatusChange();
+}
+
+void DeviceLocalAccountPolicyStatusProvider::OnDeviceLocalAccountsChanged() {
+  NotifyStatusChange();
+}
+#endif
 
 PolicyUIHandler::PolicyUIHandler()
-    : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {}
+    : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
+}
 
 PolicyUIHandler::~PolicyUIHandler() {
   GetPolicyService()->RemoveObserver(policy::POLICY_DOMAIN_CHROME, this);
 }
 
 void PolicyUIHandler::RegisterMessages() {
 #if defined(OS_CHROMEOS)
   policy::BrowserPolicyConnector* connector =
       g_browser_process->browser_policy_connector();
-  if (connector->IsEnterpriseManaged()) {
-    enterprise_domain_ = UTF8ToUTF16(connector->GetEnterpriseDomain());
-    device_status_provider_.reset(
-        new CloudPolicyCoreStatusProvider(
-            connector->GetDeviceCloudPolicyManager()->core()));
-  }
+  if (connector->IsEnterpriseManaged())
+    device_status_provider_.reset(new DevicePolicyStatusProvider(connector));
 
-  chromeos::UserManager* user_manager = chromeos::UserManager::Get();
+  const chromeos::UserManager* user_manager = chromeos::UserManager::Get();
   if (user_manager->IsLoggedInAsPublicAccount()) {
     policy::DeviceLocalAccountPolicyService* local_account_service =
         connector->GetDeviceLocalAccountPolicyService();
     if (local_account_service) {
       user_status_provider_.reset(
           new DeviceLocalAccountPolicyStatusProvider(
               user_manager->GetLoggedInUser()->email(), local_account_service));
     }
   } else {
     policy::CloudPolicyManager* user_cloud_policy_manager =
         connector->GetUserCloudPolicyManager();
     if (user_cloud_policy_manager) {
       user_status_provider_.reset(
-          new CloudPolicyCoreStatusProvider(user_cloud_policy_manager->core()));
+          new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
     }
   }
 #else
   policy::CloudPolicyManager* user_cloud_policy_manager =
       policy::UserCloudPolicyManagerFactory::GetForProfile(
           Profile::FromWebUI(web_ui()));
   if (user_cloud_policy_manager) {
     user_status_provider_.reset(
-        new CloudPolicyCoreStatusProvider(user_cloud_policy_manager->core()));
+        new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
   }
 #endif
 
   if (!user_status_provider_.get())
     user_status_provider_.reset(new CloudPolicyStatusProvider());
   if (!device_status_provider_.get())
     device_status_provider_.reset(new CloudPolicyStatusProvider());
 
-  base::Closure update_callback(base::Bind(&PolicyUIHandler::SendDataToUI,
+  base::Closure update_callback(base::Bind(&PolicyUIHandler::SendStatus,
                                            base::Unretained(this)));
   user_status_provider_->SetStatusChangeCallback(update_callback);
   device_status_provider_->SetStatusChangeCallback(update_callback);
   GetPolicyService()->AddObserver(policy::POLICY_DOMAIN_CHROME, this);
 
   web_ui()->RegisterMessageCallback(
-      "requestData",
-      base::Bind(&PolicyUIHandler::HandleRequestData,
-                 base::Unretained(this)));
+      "initialized",
+      base::Bind(&PolicyUIHandler::HandleInitialized, base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
-      "fetchPolicy",
-      base::Bind(&PolicyUIHandler::HandleFetchPolicy,
+      "reloadPolicies",
+      base::Bind(&PolicyUIHandler::HandleReloadPolicies,
                  base::Unretained(this)));
 }
 
 void PolicyUIHandler::OnPolicyUpdated(policy::PolicyDomain domain,
                                       const std::string& component_id,
                                       const policy::PolicyMap& previous,
                                       const policy::PolicyMap& current) {
   DCHECK(domain == policy::POLICY_DOMAIN_CHROME);
   DCHECK(component_id.empty());
-  SendDataToUI();
+  SendPolicyValues();
 }
 
-// static
-scoped_ptr<base::ListValue> PolicyUIHandler::GetPolicyStatusList(
-    const policy::PolicyMap& policies,
-    bool* any_policies_set) {
-  scoped_ptr<base::ListValue> result(new base::ListValue());
+void PolicyUIHandler::SendPolicyNames() const {
+  base::DictionaryValue names;
+  const policy::PolicyDefinitionList* list =
+      policy::GetChromePolicyDefinitionList();
+  for (const policy::PolicyDefinitionList::Entry* entry = list->begin;
+       entry != list->end; ++entry) {
+    names.SetBoolean(entry->name, true);
+  }
+  web_ui()->CallJavascriptFunction("policy.Page.setPolicyNames", names);
+}
+
+void PolicyUIHandler::SendPolicyValues() const {
   // Make a copy that can be modified, since some policy values are modified
   // before being displayed.
-  policy::PolicyMap policy_map;
-  policy_map.CopyFrom(policies);
+  policy::PolicyMap map;
+  map.CopyFrom(GetPolicyService()->GetPolicies(policy::POLICY_DOMAIN_CHROME,
+                                               std::string()));
 
   // Get a list of all the errors in the policy values.
   const policy::ConfigurationPolicyHandlerList* handler_list =
       g_browser_process->browser_policy_connector()->GetHandlerList();
   policy::PolicyErrorMap errors;
-  handler_list->ApplyPolicySettings(policy_map, NULL, &errors);
-  handler_list->PrepareForDisplaying(&policy_map);
+  handler_list->ApplyPolicySettings(map, NULL, &errors);
 
-  // Append each known policy and its status.
-  *any_policies_set = false;
-  std::vector<base::DictionaryValue*> unset_policies;
-  base::hash_set<std::string> known_names;
-  const policy::PolicyDefinitionList* policy_list =
-      policy::GetChromePolicyDefinitionList();
-  for (const policy::PolicyDefinitionList::Entry* policy = policy_list->begin;
-       policy != policy_list->end; ++policy) {
-    known_names.insert(policy->name);
-    const policy::PolicyMap::Entry* entry = policy_map.Get(policy->name);
-    string16 error_message = errors.GetErrors(policy->name);
-    if (entry) {
-      *any_policies_set = true;
-      result->Append(GetPolicyDetails(policy, entry, error_message));
-    } else {
-      unset_policies.push_back(GetPolicyErrorDetails(policy->name, false));
-    }
+  // Convert dictionary values to strings for display.
+  handler_list->PrepareForDisplaying(&map);
+
+  base::DictionaryValue values;
+  for (policy::PolicyMap::const_iterator entry = map.begin();
+      entry != map.end(); ++entry) {
+    base::DictionaryValue* value = new base::DictionaryValue;
+    value->Set("value", entry->second.value->DeepCopy());
+    if (entry->second.scope == policy::POLICY_SCOPE_USER)
+      value->SetString("scope", "user");
+    else
+      value->SetString("scope", "machine");
+    if (entry->second.level == policy::POLICY_LEVEL_RECOMMENDED)
+      value->SetString("level", "recommended");
+    else
+      value->SetString("level", "mandatory");
+    string16 error = errors.GetErrors(entry->first);
+    if (!error.empty())
+      value->SetString("error", error);
+    values.Set(entry->first, value);
   }
 
-  // Append unrecognized policy names.
-  for (policy::PolicyMap::const_iterator it = policy_map.begin();
-       it != policy_map.end(); ++it) {
-    if (!ContainsKey(known_names, it->first))
-      result->Append(GetPolicyErrorDetails(it->first, true));
-  }
-
-  // Append policies that aren't currently configured to the end.
-  for (std::vector<base::DictionaryValue*>::const_iterator it =
-           unset_policies.begin();
-       it != unset_policies.end(); ++it) {
-    result->Append(*it);
-  }
-
-  return result.Pass();
+  web_ui()->CallJavascriptFunction("policy.Page.setPolicyValues", values);
 }
 
-void PolicyUIHandler::HandleRequestData(const base::ListValue* args) {
-  SendDataToUI();
+void PolicyUIHandler::SendStatus() const {
+  scoped_ptr<base::DictionaryValue> device_status(new base::DictionaryValue);
+  device_status_provider_->GetStatus(device_status.get());
+  if (!device_domain_.empty())
+    device_status->SetString("domain", device_domain_);
+  scoped_ptr<base::DictionaryValue> user_status(new base::DictionaryValue);
+  user_status_provider_->GetStatus(user_status.get());
+  std::string username;
+  user_status->GetString("username", &username);
+  if (!username.empty())
+    user_status->SetString("domain", gaia::ExtractDomainName(username));
+
+  base::DictionaryValue status;
+  if (!device_status->empty())
+    status.Set("device", device_status.release());
+  if (!user_status->empty())
+    status.Set("user", user_status.release());
+
+  web_ui()->CallJavascriptFunction("policy.Page.setStatus", status);
 }
 
-void PolicyUIHandler::HandleFetchPolicy(const base::ListValue* args) {
-  // Fetching policy can potentially take a while due to cloud policy fetches.
-  // Use a WeakPtr to make sure the callback is invalidated if the tab is closed
-  // before the fetching completes.
+void PolicyUIHandler::HandleInitialized(const base::ListValue* args) {
+  SendPolicyNames();
+  SendPolicyValues();
+  SendStatus();
+}
+
+void PolicyUIHandler::HandleReloadPolicies(const base::ListValue* args) {
   GetPolicyService()->RefreshPolicies(
-      base::Bind(&PolicyUIHandler::OnRefreshDone,
+      base::Bind(&PolicyUIHandler::OnRefreshPoliciesDone,
                  weak_factory_.GetWeakPtr()));
 }
 
-void PolicyUIHandler::OnRefreshDone() {
-  web_ui()->CallJavascriptFunction("Policy.refreshDone");
+void PolicyUIHandler::OnRefreshPoliciesDone() const {
+  web_ui()->CallJavascriptFunction("policy.Page.reloadPoliciesDone");
 }
 
-void PolicyUIHandler::SendDataToUI() {
-  policy::PolicyService* service = GetPolicyService();
-  bool any_policies_set = false;
-  base::ListValue* list =
-      GetPolicyStatusList(
-          service->GetPolicies(policy::POLICY_DOMAIN_CHROME, std::string()),
-          &any_policies_set).release();
-  base::DictionaryValue results;
-  results.Set("policies", list);
-  results.SetBoolean("anyPoliciesSet", any_policies_set);
-  base::DictionaryValue* dict = GetStatusData();
-  results.Set("status", dict);
-  web_ui()->CallJavascriptFunction("Policy.returnData", results);
+policy::PolicyService* PolicyUIHandler::GetPolicyService() const {
+  return Profile::FromWebUI(web_ui())->GetPolicyService();
 }
 
-policy::PolicyService* PolicyUIHandler::GetPolicyService() {
-  Profile* profile = Profile::FromWebUI(web_ui());
-  return profile->GetPolicyService();
-}
-
-base::DictionaryValue* PolicyUIHandler::GetStatusData() {
-  base::DictionaryValue* results = new base::DictionaryValue();
-
-  scoped_ptr<base::DictionaryValue> user_status_dict(
-      new base::DictionaryValue());
-  bool user_status_available =
-      user_status_provider_->GetStatus(user_status_dict.get());
-  user_status_dict->SetBoolean("display", user_status_available);
-  results->Set("userStatus", user_status_dict.release());
-
-  scoped_ptr<base::DictionaryValue> device_status_dict(
-      new base::DictionaryValue());
-  bool device_status_available =
-      device_status_provider_->GetStatus(device_status_dict.get());
-  device_status_dict->SetString("domain", enterprise_domain_);
-  device_status_dict->SetBoolean("display", device_status_available);
-  results->Set("deviceStatus", device_status_dict.release());
-
-  results->SetBoolean("displayStatusSection",
-                      user_status_available || device_status_available);
-  return results;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// PolicyUI
-//
-////////////////////////////////////////////////////////////////////////////////
-
 PolicyUI::PolicyUI(content::WebUI* web_ui) : WebUIController(web_ui) {
   web_ui->AddMessageHandler(new PolicyUIHandler);
-
-  // Set up the chrome://policy/ source.
-  Profile* profile = Profile::FromWebUI(web_ui);
-  content::WebUIDataSource::Add(profile, CreatePolicyUIHTMLSource());
+  content::WebUIDataSource::Add(Profile::FromWebUI(web_ui),
+                                CreatePolicyUIHTMLSource());
 }
 
 PolicyUI::~PolicyUI() {
 }