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// 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.
#ifndef CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
#define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
#include <string>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/prefs/pref_store.h"
#include "base/values.h"
#include "chrome/browser/policy/policy_map.h"
#include "chrome/browser/policy/policy_service.h"
class PrefValueMap;
namespace policy {
// An implementation of PrefStore that bridges policy settings as read from the
// PolicyService to preferences. Converts POLICY_DOMAIN_CHROME policies a given
// PolicyLevel to their corresponding preferences.
class ConfigurationPolicyPrefStore
: public PrefStore,
public PolicyService::Observer {
public:
// Does not take ownership of |service|. Only policies of the given |level|
// will be mapped.
ConfigurationPolicyPrefStore(PolicyService* service, PolicyLevel level);
// PrefStore methods:
virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE;
virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE;
virtual size_t NumberOfObservers() const OVERRIDE;
virtual bool IsInitializationComplete() const OVERRIDE;
virtual bool GetValue(const std::string& key,
const Value** result) const OVERRIDE;
// PolicyService::Observer methods:
virtual void OnPolicyUpdated(const PolicyNamespace& ns,
const PolicyMap& previous,
const PolicyMap& current) OVERRIDE;
virtual void OnPolicyServiceInitialized(PolicyDomain domain) OVERRIDE;
// Creates a ConfigurationPolicyPrefStore that only provides policies that
// have POLICY_LEVEL_MANDATORY level.
static ConfigurationPolicyPrefStore* CreateMandatoryPolicyPrefStore(
PolicyService* policy_service);
// Creates a ConfigurationPolicyPrefStore that only provides policies that
// have POLICY_LEVEL_RECOMMENDED level.
static ConfigurationPolicyPrefStore* CreateRecommendedPolicyPrefStore(
PolicyService* policy_service);
private:
virtual ~ConfigurationPolicyPrefStore();
// Refreshes policy information, rereading policy from the policy service and
// sending out change notifications as appropriate.
void Refresh();
// Returns a new PrefValueMap containing the preference values that correspond
// to the policies currently provided by the policy service.
PrefValueMap* CreatePreferencesFromPolicies();
// The PolicyService from which policy settings are read.
PolicyService* policy_service_;
// The policy level that this PrefStore uses.
PolicyLevel level_;
// Current policy preferences.
scoped_ptr<PrefValueMap> prefs_;
ObserverList<PrefStore::Observer, true> observers_;
DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyPrefStore);
};
} // namespace policy
#endif // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
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