1 // Copyright (c) 2011 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 CHROME_BROWSER_POLICY_POLICY_MAP_H_ 6 #define CHROME_BROWSER_POLICY_POLICY_MAP_H_ 7 8 #include <map> 9 10 #include "base/values.h" 11 #include "policy/configuration_policy_type.h" 12 13 namespace policy { 14 15 // Wrapper class around a std::map<ConfigurationPolicyType, Value*> that 16 // properly cleans up after itself when going out of scope. 17 // Exposes interesting methods of the underlying std::map. 18 class PolicyMap { 19 public: 20 typedef std::map<ConfigurationPolicyType, Value*> PolicyMapType; 21 typedef PolicyMapType::const_iterator const_iterator; 22 23 PolicyMap(); 24 virtual ~PolicyMap(); 25 26 // Returns a weak reference to the value currently stored for key |policy|. 27 // Ownership is retained by PolicyMap; callers should use Value::DeepCopy 28 // if they need a copy that they own themselves. 29 // Returns NULL if the map does not contain a value for |policy|. 30 const Value* Get(ConfigurationPolicyType policy) const; 31 // Takes ownership of |value|. Overwrites any existing value stored in the 32 // map for the key |policy|. 33 void Set(ConfigurationPolicyType policy, Value* value); 34 void Erase(ConfigurationPolicyType policy); 35 36 void Swap(PolicyMap* other); 37 38 bool Equals(const PolicyMap& other) const; 39 bool empty() const; 40 size_t size() const; 41 42 const_iterator begin() const; 43 const_iterator end() const; 44 void Clear(); 45 46 private: 47 // Helper function for Equals(...). 48 static bool MapEntryEquals(const PolicyMapType::value_type& a, 49 const PolicyMapType::value_type& b); 50 51 PolicyMapType map_; 52 53 DISALLOW_COPY_AND_ASSIGN(PolicyMap); 54 }; 55 56 } // namespace policy 57 58 #endif // CHROME_BROWSER_POLICY_POLICY_MAP_H_ 59
