1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_MAP_WRAPPER_H_ 12 #define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_MAP_WRAPPER_H_ 13 14 #include <map> 15 16 #include "constructor_magic.h" 17 18 namespace webrtc { 19 class MapItem 20 { 21 friend class MapWrapper; 22 23 public: 24 MapItem(int id, void* ptr); 25 virtual ~MapItem(); 26 void* GetItem(); 27 int GetId(); 28 unsigned int GetUnsignedId(); 29 void SetItem(void* ptr); 30 31 private: 32 int item_id_; 33 void* item_pointer_; 34 }; 35 36 class MapWrapper 37 { 38 public: 39 MapWrapper(); 40 ~MapWrapper(); 41 42 // Puts a pointer to anything in the map and associates it with id. Note, id 43 // needs to be unique for all items in the map. 44 int Insert(int id, void* ptr); 45 46 // Removes item from map. 47 int Erase(MapItem* item); 48 49 // Finds item with associated with id and removes it from the map. 50 int Erase(int id); 51 52 // Returns the number of elements stored in the map. 53 int Size() const; 54 55 // Returns a pointer to the first MapItem in the map. 56 MapItem* First() const; 57 58 // Returns a pointer to the last MapItem in the map. 59 MapItem* Last() const; 60 61 // Returns a pointer to the MapItem stored after item in the map. 62 MapItem* Next(MapItem* item) const; 63 64 // Returns a pointer to the MapItem stored before item in the map. 65 MapItem* Previous(MapItem* item) const; 66 67 // Returns a pointer to the MapItem associated with id from the map. 68 MapItem* Find(int id) const; 69 70 private: 71 std::map<int, MapItem*> map_; 72 }; 73 } // namespace webrtc 74 75 #endif // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_MAP_WRAPPER_H_ 76