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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_LANGUAGE_CORE_BROWSER_LANGUAGE_MODEL_MANAGER_H_
#define COMPONENTS_LANGUAGE_CORE_BROWSER_LANGUAGE_MODEL_MANAGER_H_
#include <map>
#include <memory>
#include <string>
#include "components/keyed_service/core/keyed_service.h"
#include "components/language/core/browser/language_model.h"
#include "components/prefs/pref_service.h"
namespace language {
// Manages a set of LanguageModel objects.
class LanguageModelManager : public KeyedService {
public:
enum class ModelType {
BASELINE,
FLUENT,
GEO,
ULP,
};
LanguageModelManager() = delete;
LanguageModelManager(PrefService* prefs, const std::string& ui_lang);
LanguageModelManager(const LanguageModelManager&) = delete;
LanguageModelManager& operator=(const LanguageModelManager&) = delete;
~LanguageModelManager() override;
void AddModel(const ModelType type, std::unique_ptr<LanguageModel> model);
// Sets which model type should be used as the Primary model to make target
// language decisions. A model for |type| must have been previously added
// through a call to AddModel.
void SetPrimaryModel(ModelType type);
LanguageModel* GetPrimaryModel() const;
ModelType GetPrimaryModelType() const;
LanguageModel* GetLanguageModel(ModelType type) const;
private:
std::unique_ptr<LanguageModel> default_model_;
std::map<ModelType, std::unique_ptr<LanguageModel>> models_;
ModelType primary_model_type_;
};
} // namespace language
#endif // COMPONENTS_LANGUAGE_CORE_BROWSER_LANGUAGE_MODEL_MANAGER_H_
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