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 #include "chrome/browser/resources_util.h" 6 7 #include <utility> 8 9 #include "base/containers/hash_tables.h" 10 #include "base/lazy_instance.h" 11 #include "grit/theme_resources_map.h" 12 #include "grit/ui_resources_map.h" 13 14 namespace { 15 16 // A wrapper class that holds a hash_map between resource strings and resource 17 // ids. This is done so we can use base::LazyInstance which takes care of 18 // thread safety in initializing the hash_map for us. 19 class ThemeMap { 20 public: 21 typedef base::hash_map<std::string, int> StringIntMap; 22 23 ThemeMap() { 24 for (size_t i = 0; i < kThemeResourcesSize; ++i) 25 id_map_[kThemeResources[i].name] = kThemeResources[i].value; 26 for (size_t i = 0; i < kUiResourcesSize; ++i) 27 id_map_[kUiResources[i].name] = kUiResources[i].value; 28 } 29 30 int GetId(const std::string& resource_name) { 31 StringIntMap::const_iterator it = id_map_.find(resource_name); 32 if (it == id_map_.end()) 33 return -1; 34 return it->second; 35 } 36 37 private: 38 StringIntMap id_map_; 39 }; 40 41 static base::LazyInstance<ThemeMap> g_theme_ids = LAZY_INSTANCE_INITIALIZER; 42 43 } // namespace 44 45 int ResourcesUtil::GetThemeResourceId(const std::string& resource_name) { 46 return g_theme_ids.Get().GetId(resource_name); 47 } 48
