Support policies referencing external data for device-local accounts

chrome/browser/chromeos/policy/device_local_account_external_data_service.h

+// Copyright 2013 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_SERVICE_H_
+#define CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_SERVICE_H_
+
+#include <map>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/policy/device_local_account_external_data_manager.h"
+#include "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
+#include "chrome/browser/policy/cloud/resource_cache.h"
+
+namespace base {
+class SequencedTaskRunner;
+}
+
+namespace policy {
+
+class CloudPolicyStore;
+
+// Provides DeviceLocalAccountExternalDataManagers for all device-local
+// accounts. This class owns the |resource_cache_| that the managers share.
+class DeviceLocalAccountExternalDataService
+    : public DeviceLocalAccountPolicyService::Observer {
+ public:
+  DeviceLocalAccountExternalDataService(
+      DeviceLocalAccountPolicyService* parent,
+      scoped_refptr<base::SequencedTaskRunner> backend_task_runner,
+      scoped_refptr<base::SequencedTaskRunner> io_task_runner);
+  virtual ~DeviceLocalAccountExternalDataService();
+
+  // DeviceLocalAccountPolicyService::Observer:
+  virtual void OnPolicyUpdated(const std::string& user_id) OVERRIDE;
+  virtual void OnDeviceLocalAccountsChanged() OVERRIDE;
+
+  scoped_refptr<DeviceLocalAccountExternalDataManager>
+      GetExternalDataManager(const std::string& account_id,
+                             CloudPolicyStore* policy_store);
+
+ private:
+  typedef std::map<std::string,
+                   scoped_refptr<DeviceLocalAccountExternalDataManager> >
+      ExternalDataManagerMap;
+
+  DeviceLocalAccountPolicyService* parent_;
+  scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
+  scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
+  scoped_ptr<ResourceCache> resource_cache_;
+
+  ExternalDataManagerMap external_data_managers_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountExternalDataService);
+};
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_SERVICE_H_