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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_FIELD_TRIAL_CREATOR_H_
#define COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_FIELD_TRIAL_CREATOR_H_
#include <cstdint>
#include <memory>
#include <string>
#include <unordered_map>
#include "components/variations/service/ui_string_overrider.h"
#include "components/variations/service/variations_field_trial_creator_base.h"
#include "components/variations/variations_seed_store.h"
namespace variations {
class VariationsServiceClient;
// Used to set up field trials based on stored variations seed data.
class VariationsFieldTrialCreator : public VariationsFieldTrialCreatorBase {
public:
// Caller is responsible for ensuring that objects passed to the constructor
// stay valid for the lifetime of this object.
VariationsFieldTrialCreator(VariationsServiceClient* client,
std::unique_ptr<VariationsSeedStore> seed_store,
const UIStringOverrider& ui_string_overrider);
VariationsFieldTrialCreator(const VariationsFieldTrialCreator&) = delete;
VariationsFieldTrialCreator& operator=(const VariationsFieldTrialCreator&) =
delete;
~VariationsFieldTrialCreator() override;
// Overrides cached UI strings on the resource bundle once it is initialized.
void OverrideCachedUIStrings() override;
// Returns whether the map of the cached UI strings to override is empty.
bool IsOverrideResourceMapEmpty() override;
protected:
// Overrides the string resource specified by |hash| with |str| in the
// resource bundle. Protected for testing.
void OverrideUIString(uint32_t hash, const std::u16string& str) override;
private:
UIStringOverrider ui_string_overrider_;
// Caches the UI strings which need to be overridden in the resource bundle.
// These strings are cached before the resource bundle is initialized.
std::unordered_map<int, std::u16string> overridden_strings_map_;
};
} // namespace variations
#endif // COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_FIELD_TRIAL_CREATOR_H_
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