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// Copyright 2021 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_HISTORY_IMPL_H_
#define ASH_ACCELERATORS_ACCELERATOR_HISTORY_IMPL_H_
#include <optional>
#include <set>
#include "ash/ash_export.h"
#include "ash/public/cpp/accelerators.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/events/event_handler.h"
namespace ash {
// Keeps track of the system-wide current and the last key accelerators.
class ASH_EXPORT AcceleratorHistoryImpl : public AcceleratorHistory,
public ui::EventHandler {
public:
AcceleratorHistoryImpl();
AcceleratorHistoryImpl(const AcceleratorHistoryImpl&) = delete;
AcceleratorHistoryImpl& operator=(const AcceleratorHistoryImpl&) = delete;
~AcceleratorHistoryImpl() override;
// Returns the most recent recorded accelerator.
const ui::Accelerator& current_accelerator() const {
return current_accelerator_;
}
// Returns the most recent previously recorded accelerator that is different
// than the current.
const ui::Accelerator& previous_accelerator() const {
return previous_accelerator_;
}
const std::set<ui::KeyboardCode>& currently_pressed_keys() const {
return currently_pressed_keys_;
}
// ui::EventHandler:
void OnKeyEvent(ui::KeyEvent* event) override;
void OnMouseEvent(ui::MouseEvent* event) override;
// AcceleratorHistory:
void StoreCurrentAccelerator(const ui::Accelerator& accelerator) override;
void InterruptCurrentAccelerator();
private:
ui::Accelerator current_accelerator_;
ui::Accelerator previous_accelerator_;
std::set<ui::KeyboardCode> currently_pressed_keys_;
// The most recently logged KeyboardCode, saved to prevent spammy logs.
std::optional<ui::KeyboardCode> last_logged_key_code_;
};
} // namespace ash
#endif // ASH_ACCELERATORS_ACCELERATOR_HISTORY_IMPL_H_
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