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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/resources_util.h"
#include <utility>
#include "base/containers/hash_tables.h"
#include "base/lazy_instance.h"
#include "grit/theme_resources_map.h"
#include "grit/ui_resources_map.h"
#if defined(OS_CHROMEOS)
#include "grit/ui_chromeos_resources_map.h"
#endif
namespace {
// A wrapper class that holds a hash_map between resource strings and resource
// ids. This is done so we can use base::LazyInstance which takes care of
// thread safety in initializing the hash_map for us.
class ThemeMap {
public:
typedef base::hash_map<std::string, int> StringIntMap;
ThemeMap() {
for (size_t i = 0; i < kThemeResourcesSize; ++i)
id_map_[kThemeResources[i].name] = kThemeResources[i].value;
for (size_t i = 0; i < kUiResourcesSize; ++i)
id_map_[kUiResources[i].name] = kUiResources[i].value;
#if defined(OS_CHROMEOS)
for (size_t i = 0; i < kUiChromeosResourcesSize; ++i)
id_map_[kUiChromeosResources[i].name] = kUiChromeosResources[i].value;
#endif
}
int GetId(const std::string& resource_name) {
StringIntMap::const_iterator it = id_map_.find(resource_name);
if (it == id_map_.end())
return -1;
return it->second;
}
private:
StringIntMap id_map_;
};
static base::LazyInstance<ThemeMap> g_theme_ids = LAZY_INSTANCE_INITIALIZER;
} // namespace
int ResourcesUtil::GetThemeResourceId(const std::string& resource_name) {
return g_theme_ids.Get().GetId(resource_name);
}
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