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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_LAUNCHER_STATE_MACHINE_H_
#define ASH_ACCELERATORS_ACCELERATOR_LAUNCHER_STATE_MACHINE_H_
#include "ash/ash_export.h"
#include "base/memory/raw_ptr.h"
#include "ui/events/event_handler.h"
#include "ui/ozone/public/input_controller.h"
namespace ash {
// Keeps track when the launcher is able to be opened via Search release or
// Shift + Search release shortcuts.
class ASH_EXPORT AcceleratorLauncherStateMachine : public ui::EventHandler {
public:
enum class LauncherState {
// Initial state, when we are waiting for our first bit of input for the
// state machine.
kStart,
// When the launcher can be triggered. In any other state, the launcher will
// be suppressed.
kTrigger,
// When we are waiting solely for the release of Meta so we can move to
// kTrigger.
kPrimed,
// When the launcher accelerator is being suppressed until there is a state
// where all keys are released.
kSuppress,
};
explicit AcceleratorLauncherStateMachine(
ui::InputController* input_controller);
AcceleratorLauncherStateMachine(const AcceleratorLauncherStateMachine&) =
delete;
AcceleratorLauncherStateMachine& operator=(
const AcceleratorLauncherStateMachine&) = delete;
~AcceleratorLauncherStateMachine() override;
// ui::EventHandler:
void OnKeyEvent(ui::KeyEvent* event) override;
void OnMouseEvent(ui::MouseEvent* event) override;
bool CanHandleLauncher() const {
return current_state_ == LauncherState::kTrigger;
}
LauncherState current_state() const { return current_state_; }
void SetCanHandleLauncherForTesting(bool can_handle);
private:
LauncherState current_state_ = LauncherState::kStart;
raw_ptr<ui::InputController> input_controller_;
};
} // namespace ash
#endif // ASH_ACCELERATORS_ACCELERATOR_LAUNCHER_STATE_MACHINE_H_
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