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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ | 5 #ifndef COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ |
6 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ | 6 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <set> | 9 #include <set> |
10 #include <string> | 10 #include <string> |
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21 class POLICY_EXPORT PolicyMap { | 21 class POLICY_EXPORT PolicyMap { |
22 public: | 22 public: |
23 // Each policy maps to an Entry which keeps the policy value as well as other | 23 // Each policy maps to an Entry which keeps the policy value as well as other |
24 // relevant data about the policy. | 24 // relevant data about the policy. |
25 struct POLICY_EXPORT Entry { | 25 struct POLICY_EXPORT Entry { |
26 PolicyLevel level; | 26 PolicyLevel level; |
27 PolicyScope scope; | 27 PolicyScope scope; |
28 base::Value* value; | 28 base::Value* value; |
29 ExternalDataFetcher* external_data_fetcher; | 29 ExternalDataFetcher* external_data_fetcher; |
30 | 30 |
| 31 // For debugging and displaying only. Set by provider delivering the policy. |
| 32 PolicySource source; |
| 33 |
31 Entry(); | 34 Entry(); |
32 | 35 |
33 // Deletes all members owned by |this|. | 36 // Deletes all members owned by |this|. |
34 void DeleteOwnedMembers(); | 37 void DeleteOwnedMembers(); |
35 | 38 |
36 // Returns a copy of |this|. | 39 // Returns a copy of |this|. |
37 scoped_ptr<Entry> DeepCopy() const; | 40 scoped_ptr<Entry> DeepCopy() const; |
38 | 41 |
39 // Returns true if |this| has higher priority than |other|. | 42 // Returns true if |this| has higher priority than |other|. |
40 bool has_higher_priority_than(const Entry& other) const; | 43 bool has_higher_priority_than(const Entry& other) const; |
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56 // Returns a weak reference to the value currently stored for key |policy|, | 59 // Returns a weak reference to the value currently stored for key |policy|, |
57 // or NULL if not found. Ownership is retained by the PolicyMap. | 60 // or NULL if not found. Ownership is retained by the PolicyMap. |
58 // This is equivalent to Get(policy)->value, when it doesn't return NULL. | 61 // This is equivalent to Get(policy)->value, when it doesn't return NULL. |
59 const base::Value* GetValue(const std::string& policy) const; | 62 const base::Value* GetValue(const std::string& policy) const; |
60 | 63 |
61 // Takes ownership of |value| and |external_data_fetcher|. Overwrites any | 64 // Takes ownership of |value| and |external_data_fetcher|. Overwrites any |
62 // existing information stored in the map for the key |policy|. | 65 // existing information stored in the map for the key |policy|. |
63 void Set(const std::string& policy, | 66 void Set(const std::string& policy, |
64 PolicyLevel level, | 67 PolicyLevel level, |
65 PolicyScope scope, | 68 PolicyScope scope, |
| 69 PolicySource source, |
66 base::Value* value, | 70 base::Value* value, |
67 ExternalDataFetcher* external_data_fetcher); | 71 ExternalDataFetcher* external_data_fetcher); |
68 | 72 |
69 // Erase the given |policy|, if it exists in this map. | 73 // Erase the given |policy|, if it exists in this map. |
70 void Erase(const std::string& policy); | 74 void Erase(const std::string& policy); |
71 | 75 |
72 // Swaps the internal representation of |this| with |other|. | 76 // Swaps the internal representation of |this| with |other|. |
73 void Swap(PolicyMap* other); | 77 void Swap(PolicyMap* other); |
74 | 78 |
75 // |this| becomes a copy of |other|. Any existing policies are dropped. | 79 // |this| becomes a copy of |other|. Any existing policies are dropped. |
76 void CopyFrom(const PolicyMap& other); | 80 void CopyFrom(const PolicyMap& other); |
77 | 81 |
78 // Returns a copy of |this|. | 82 // Returns a copy of |this|. |
79 scoped_ptr<PolicyMap> DeepCopy() const; | 83 scoped_ptr<PolicyMap> DeepCopy() const; |
80 | 84 |
81 // Merges policies from |other| into |this|. Existing policies are only | 85 // Merges policies from |other| into |this|. Existing policies are only |
82 // overridden by those in |other| if they have a higher priority, as defined | 86 // overridden by those in |other| if they have a higher priority, as defined |
83 // by Entry::has_higher_priority_than(). If a policy is contained in both | 87 // by Entry::has_higher_priority_than(). If a policy is contained in both |
84 // maps with the same priority, the current value in |this| is preserved. | 88 // maps with the same priority, the current value in |this| is preserved. |
85 void MergeFrom(const PolicyMap& other); | 89 void MergeFrom(const PolicyMap& other); |
86 | 90 |
87 // Loads the values in |policies| into this PolicyMap. All policies loaded | 91 // Loads the values in |policies| into this PolicyMap. All policies loaded |
88 // will have |level| and |scope| in their entries. Existing entries are | 92 // will have |level|, |scope| and |source| in their entries. Existing entries |
89 // replaced. | 93 // are replaced. |
90 void LoadFrom(const base::DictionaryValue* policies, | 94 void LoadFrom(const base::DictionaryValue* policies, |
91 PolicyLevel level, | 95 PolicyLevel level, |
92 PolicyScope scope); | 96 PolicyScope scope, |
| 97 PolicySource source); |
93 | 98 |
94 // Compares this value map against |other| and stores all key names that have | 99 // Compares this value map against |other| and stores all key names that have |
95 // different values or reference different external data in |differing_keys|. | 100 // different values or reference different external data in |differing_keys|. |
96 // This includes keys that are present only in one of the maps. | 101 // This includes keys that are present only in one of the maps. |
97 // |differing_keys| is not cleared before the keys are added. | 102 // |differing_keys| is not cleared before the keys are added. |
98 void GetDifferingKeys(const PolicyMap& other, | 103 void GetDifferingKeys(const PolicyMap& other, |
99 std::set<std::string>* differing_keys) const; | 104 std::set<std::string>* differing_keys) const; |
100 | 105 |
101 // Removes all policies that don't have the specified |level|. This is a | 106 // Removes all policies that don't have the specified |level|. This is a |
102 // temporary helper method, until mandatory and recommended levels are served | 107 // temporary helper method, until mandatory and recommended levels are served |
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118 const PolicyMapType::value_type& b); | 123 const PolicyMapType::value_type& b); |
119 | 124 |
120 PolicyMapType map_; | 125 PolicyMapType map_; |
121 | 126 |
122 DISALLOW_COPY_AND_ASSIGN(PolicyMap); | 127 DISALLOW_COPY_AND_ASSIGN(PolicyMap); |
123 }; | 128 }; |
124 | 129 |
125 } // namespace policy | 130 } // namespace policy |
126 | 131 |
127 #endif // COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ | 132 #endif // COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_ |
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