1// Copyright (c) 2013 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 ASH_DISPLAY_DISPLAY_PREF_UTIL_H
6#define ASH_DISPLAY_DISPLAY_PREF_UTIL_H
7
8#include <map>
9#include <string>
10
11#include "base/strings/string_piece.h"
12
13namespace ash {
14
15// Utility templates to create enum to string map and
16// a function to find an enum value from a string.
17template<typename T>
18std::map<T, std::string>* CreateToStringMap(T k1, const std::string& v1,
19                                            T k2, const std::string& v2,
20                                            T k3, const std::string& v3,
21                                            T k4, const std::string& v4) {
22  std::map<T, std::string>* map = new std::map<T, std::string>();
23  (*map)[k1] = v1;
24  (*map)[k2] = v2;
25  (*map)[k3] = v3;
26  (*map)[k4] = v4;
27  return map;
28}
29
30template<typename T>
31std::map<T, std::string>* CreateToStringMap(T k1, const std::string& v1,
32                                            T k2, const std::string& v2,
33                                            T k3, const std::string& v3) {
34  std::map<T, std::string>* map = new std::map<T, std::string>();
35  (*map)[k1] = v1;
36  (*map)[k2] = v2;
37  (*map)[k3] = v3;
38  return map;
39}
40
41template<typename T>
42bool ReverseFind(const std::map<T, std::string>* map,
43                 const base::StringPiece& value,
44                 T* key) {
45  typename std::map<T, std::string>::const_iterator iter = map->begin();
46  for (;
47       iter != map->end();
48       ++iter) {
49    if (iter->second == value) {
50      *key = iter->first;
51      return true;
52    }
53  }
54  return false;
55}
56
57}  // namespace ash
58
59#endif  // ASH_DISPLAY_DISPLAY_PREF_UTIL_H
60