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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef COMPONENTS_POLICY_CORE_BROWSER_CONFIGURATION_POLICY_HANDLER_LIST_H_
      6 #define COMPONENTS_POLICY_CORE_BROWSER_CONFIGURATION_POLICY_HANDLER_LIST_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/callback.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "components/policy/core/common/policy_details.h"
     14 #include "components/policy/policy_export.h"
     15 
     16 class PrefValueMap;
     17 
     18 namespace policy {
     19 
     20 class ConfigurationPolicyHandler;
     21 class PolicyErrorMap;
     22 struct PolicyHandlerParameters;
     23 class PolicyMap;
     24 struct PolicyToPreferenceMapEntry;
     25 class Schema;
     26 
     27 // Converts policies to their corresponding preferences by applying a list of
     28 // ConfigurationPolicyHandler objects. This includes error checking and
     29 // cleaning up policy values for displaying.
     30 class POLICY_EXPORT ConfigurationPolicyHandlerList {
     31  public:
     32   typedef base::Callback<void(PolicyHandlerParameters*)>
     33       PopulatePolicyHandlerParametersCallback;
     34 
     35   explicit ConfigurationPolicyHandlerList(
     36       const PopulatePolicyHandlerParametersCallback& parameters_callback,
     37       const GetChromePolicyDetailsCallback& details_callback);
     38   ~ConfigurationPolicyHandlerList();
     39 
     40   // Adds a policy handler to the list.
     41   void AddHandler(scoped_ptr<ConfigurationPolicyHandler> handler);
     42 
     43   // Translates |policies| to their corresponding preferences in |prefs|.
     44   // Any errors found while processing the policies are stored in |errors|.
     45   // |prefs| or |errors| can be NULL, and won't be filled in that case.
     46   void ApplyPolicySettings(const PolicyMap& policies,
     47                            PrefValueMap* prefs,
     48                            PolicyErrorMap* errors) const;
     49 
     50   // Converts sensitive policy values to others more appropriate for displaying.
     51   void PrepareForDisplaying(PolicyMap* policies) const;
     52 
     53  private:
     54   std::vector<ConfigurationPolicyHandler*> handlers_;
     55   const PopulatePolicyHandlerParametersCallback parameters_callback_;
     56   const GetChromePolicyDetailsCallback details_callback_;
     57 
     58   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyHandlerList);
     59 };
     60 
     61 // Callback with signature of BuildHandlerList(), to be used in constructor of
     62 // BrowserPolicyConnector.
     63 typedef base::Callback<scoped_ptr<ConfigurationPolicyHandlerList>(
     64     const Schema&)> HandlerListFactory;
     65 
     66 }  // namespace policy
     67 
     68 #endif  // COMPONENTS_POLICY_CORE_BROWSER_CONFIGURATION_POLICY_HANDLER_LIST_H_
     69