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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_ACCELERATORS_ACCELERATOR_ALIAS_CONVERTER_H_
#define ASH_ACCELERATORS_ACCELERATOR_ALIAS_CONVERTER_H_
#include <optional>
#include <vector>
#include "ash/ash_export.h"
#include "ui/base/accelerators/accelerator.h"
namespace ui {
struct KeyboardDevice;
}
namespace ash {
// AcceleratorAliasConverter class creates alias for given accelerators,
// including top row key alias, six pack key alias and reversed six pack key,
// etc.
class ASH_EXPORT AcceleratorAliasConverter {
public:
AcceleratorAliasConverter() = default;
AcceleratorAliasConverter(const AcceleratorAliasConverter&) = delete;
AcceleratorAliasConverter& operator=(const AcceleratorAliasConverter&) =
delete;
~AcceleratorAliasConverter() = default;
// Create accelerator alias when the accelerator contains a top row key,
// six pack key or reversed six pack key. For |top_row_key|, replace the base
// accelerator with top-row remapped accelerator. For |six_pack_key| and
// |reversed_six_pack_key|, show both the base accelerator and the remapped
// accelerator. Use a vector here since it may display two accelerators.
std::vector<ui::Accelerator> CreateAcceleratorAlias(
const ui::Accelerator& accelerator) const;
private:
// Create accelerator alias for |top_row_key| for the given |keyboard|.
std::optional<ui::Accelerator> CreateTopRowAliases(
const ui::KeyboardDevice& keyboard,
const ui::Accelerator& accelerator) const;
// Create accelerator alias for |function_key| for the given |keyboard|.
std::optional<ui::Accelerator> CreateFunctionKeyAliases(
const ui::KeyboardDevice& keyboard,
const ui::Accelerator& accelerator) const;
// Create accelerator alias for |six_pack_key|. Result could be either zero or
// one alias found. Use a vector to be more consistent and cleaner.
std::vector<ui::Accelerator> CreateSixPackAliases(
const ui::Accelerator& accelerator,
std::optional<int> device_id) const;
// Create accelerator alias for |capslock| for the given |keyboard|.
std::optional<ui::Accelerator> CreateCapsLockAliases(
const ui::KeyboardDevice& keyboard,
const ui::Accelerator& accelerator) const;
// Create accelerator alias for extended function keys (F11+) for the
// given `keyboard`.
std::optional<ui::Accelerator> CreateExtendedFKeysAliases(
const ui::KeyboardDevice& keyboard,
const ui::Accelerator& accelerator,
std::optional<int> device_id) const;
// Given a list of accelerators, filter out those accelerators that have
// unsupported keys. Return a list of filtered accelerators with supported
// keys only.
std::vector<ui::Accelerator> FilterAliasBySupportedKeys(
const std::vector<ui::Accelerator>& accelerators) const;
};
} // namespace ash
#endif // ASH_ACCELERATORS_ACCELERATOR_ALIAS_CONVERTER_H_
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