Duckstation/src/common/layered_settings_interface.h

// SPDX-FileCopyrightText: 2019-2022 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)

#pragma once
#include "settings_interface.h"
#include <array>

class LayeredSettingsInterface final : public SettingsInterface
{
public:
  enum Layer : u32
  {
    LAYER_CMDLINE,
    LAYER_GAME,
    LAYER_INPUT,
    LAYER_BASE,
    NUM_LAYERS
  };

  LayeredSettingsInterface();
  ~LayeredSettingsInterface() override;

  SettingsInterface* GetLayer(Layer layer) const { return m_layers[layer]; }
  void SetLayer(Layer layer, SettingsInterface* sif) { m_layers[layer] = sif; }

  bool Save() override;

  void Clear() override;

  bool GetIntValue(const char* section, const char* key, s32* value) const override;
  bool GetUIntValue(const char* section, const char* key, u32* value) const override;
  bool GetFloatValue(const char* section, const char* key, float* value) const override;
  bool GetDoubleValue(const char* section, const char* key, double* value) const override;
  bool GetBoolValue(const char* section, const char* key, bool* value) const override;
  bool GetStringValue(const char* section, const char* key, std::string* value) const override;

  void SetIntValue(const char* section, const char* key, s32 value) override;
  void SetUIntValue(const char* section, const char* key, u32 value) override;
  void SetFloatValue(const char* section, const char* key, float value) override;
  void SetDoubleValue(const char* section, const char* key, double value) override;
  void SetBoolValue(const char* section, const char* key, bool value) override;
  void SetStringValue(const char* section, const char* key, const char* value) override;
  bool ContainsValue(const char* section, const char* key) const override;
  void DeleteValue(const char* section, const char* key) override;
  void ClearSection(const char* section) override;

  std::vector<std::string> GetStringList(const char* section, const char* key) const override;
  void SetStringList(const char* section, const char* key, const std::vector<std::string>& items) override;
  bool RemoveFromStringList(const char* section, const char* key, const char* item) override;
  bool AddToStringList(const char* section, const char* key, const char* item) override;

  // default parameter overloads
  using SettingsInterface::GetBoolValue;
  using SettingsInterface::GetDoubleValue;
  using SettingsInterface::GetFloatValue;
  using SettingsInterface::GetIntValue;
  using SettingsInterface::GetStringValue;
  using SettingsInterface::GetUIntValue;

private:
  static constexpr Layer FIRST_LAYER = LAYER_CMDLINE;
  static constexpr Layer LAST_LAYER = LAYER_BASE;

  std::array<SettingsInterface*, NUM_LAYERS> m_layers{};
};