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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 <vector>
#include "base/containers/flat_map.h"
#include "base/no_destructor.h"
#include "build/branding_buildflags.h"
#include "build/build_config.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(ENABLE_BUILTIN_SEARCH_PROVIDER_ASSETS)
#include "third_party/search_engines_data/search_engines_scaled_resources_map.h"
#endif
#if BUILDFLAG(IS_CHROMEOS)
#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 = std::size(kComponentsScaledResources) +
std::size(kThemeResources) + std::size(kUiResources);
#if BUILDFLAG(ENABLE_BUILTIN_SEARCH_PROVIDER_ASSETS)
storage_size += std::size(kSearchEnginesScaledResources);
#endif
#if BUILDFLAG(IS_CHROMEOS)
storage_size += std::size(kUiChromeosResources);
#endif
// Construct in one-shot from a moved vector.
std::vector<StringIntMap::value_type> storage;
storage.reserve(storage_size);
for (const auto& resource : kComponentsScaledResources) {
storage.emplace_back(resource.path, resource.id);
}
for (const auto& resource : kThemeResources) {
storage.emplace_back(resource.path, resource.id);
}
for (const auto& resource : kUiResources) {
storage.emplace_back(resource.path, resource.id);
}
#if BUILDFLAG(ENABLE_BUILTIN_SEARCH_PROVIDER_ASSETS)
for (const auto& resource : kSearchEnginesScaledResources) {
storage.emplace_back(resource.path, resource.id);
}
#endif
#if BUILDFLAG(IS_CHROMEOS)
for (const auto& resource : kUiChromeosResources) {
storage.emplace_back(resource.path, resource.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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