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// Copyright 2012 The Chromium Authors
// 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 <stddef.h>
#include <utility>
#include "base/containers/flat_map.h"
#include "base/no_destructor.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/grit/theme_resources_map.h"
#include "components/grit/components_scaled_resources_map.h"
#include "ui/resources/grit/ui_resources_map.h"
#if BUILDFLAG(IS_CHROMEOS_ASH)
#include "ui/chromeos/resources/grit/ui_chromeos_resources_map.h"
#endif
namespace {
// A wrapper class that holds a map between resource strings and resource
// ids. This is done so we can use base::NoDestructor which takes care of
// thread safety in initializing the map for us.
class ThemeMap {
public:
using StringIntMap = base::flat_map<std::string, int>;
ThemeMap() {
size_t storage_size =
kComponentsScaledResourcesSize + kThemeResourcesSize + kUiResourcesSize;
#if BUILDFLAG(IS_CHROMEOS_ASH)
storage_size += kUiChromeosResourcesSize;
#endif
// Construct in one-shot from a moved vector.
std::vector<StringIntMap::value_type> storage;
storage.reserve(storage_size);
for (size_t i = 0; i < kComponentsScaledResourcesSize; ++i) {
storage.emplace_back(kComponentsScaledResources[i].path,
kComponentsScaledResources[i].id);
}
for (size_t i = 0; i < kThemeResourcesSize; ++i) {
storage.emplace_back(kThemeResources[i].path, kThemeResources[i].id);
}
for (size_t i = 0; i < kUiResourcesSize; ++i) {
storage.emplace_back(kUiResources[i].path, kUiResources[i].id);
}
#if BUILDFLAG(IS_CHROMEOS_ASH)
for (size_t i = 0; i < kUiChromeosResourcesSize; ++i) {
storage.emplace_back(kUiChromeosResources[i].path,
kUiChromeosResources[i].id);
}
#endif
id_map_ = StringIntMap(std::move(storage));
}
int GetId(const std::string& resource_name) const {
auto it = id_map_.find(resource_name);
return it != id_map_.end() ? it->second : -1;
}
private:
StringIntMap id_map_;
};
ThemeMap& GetThemeIdsMap() {
static base::NoDestructor<ThemeMap> s;
return *s;
}
} // namespace
int ResourcesUtil::GetThemeResourceId(const std::string& resource_name) {
return GetThemeIdsMap().GetId(resource_name);
}
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