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 #if defined(OS_CHROMEOS) 15 #include "grit/ui_chromeos_resources_map.h" 16 #endif 17 18 namespace { 19 20 // A wrapper class that holds a hash_map between resource strings and resource 21 // ids. This is done so we can use base::LazyInstance which takes care of 22 // thread safety in initializing the hash_map for us. 23 class ThemeMap { 24 public: 25 typedef base::hash_map<std::string, int> StringIntMap; 26 27 ThemeMap() { 28 for (size_t i = 0; i < kThemeResourcesSize; ++i) 29 id_map_[kThemeResources[i].name] = kThemeResources[i].value; 30 for (size_t i = 0; i < kUiResourcesSize; ++i) 31 id_map_[kUiResources[i].name] = kUiResources[i].value; 32 #if defined(OS_CHROMEOS) 33 for (size_t i = 0; i < kUiChromeosResourcesSize; ++i) 34 id_map_[kUiChromeosResources[i].name] = kUiChromeosResources[i].value; 35 #endif 36 } 37 38 int GetId(const std::string& resource_name) { 39 StringIntMap::const_iterator it = id_map_.find(resource_name); 40 if (it == id_map_.end()) 41 return -1; 42 return it->second; 43 } 44 45 private: 46 StringIntMap id_map_; 47 }; 48 49 static base::LazyInstance<ThemeMap> g_theme_ids = LAZY_INSTANCE_INITIALIZER; 50 51 } // namespace 52 53 int ResourcesUtil::GetThemeResourceId(const std::string& resource_name) { 54 return g_theme_ids.Get().GetId(resource_name); 55 } 56
