blob: bfc8c8c6861c534d53af180285f3f1c75e7625b6 [file] [log] [blame]
// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <map>
#include <set>
#include "ash/ash_export.h"
#include "base/macros.h"
#include "ui/events/event_handler.h"
namespace ash {
enum class SwitchAccessCommand;
class SwitchAccessEventHandlerDelegate;
// SwitchAccessEventHandler sends events to the Switch Access extension
// (via the delegate) when it is enabled.
class ASH_EXPORT SwitchAccessEventHandler : public ui::EventHandler {
explicit SwitchAccessEventHandler(SwitchAccessEventHandlerDelegate* delegate);
~SwitchAccessEventHandler() override;
// Sets what key_codes are captured for a given command.
bool SetKeyCodesForCommand(std::set<int> key_codes,
SwitchAccessCommand command);
// Sets whether virtual key events should be ignored.
void set_ignore_virtual_key_events(bool should_ignore) {
ignore_virtual_key_events_ = should_ignore;
// Tells the handler whether to forward all incoming key events to the Switch
// Access extension.
void set_forward_key_events(bool should_forward) {
forward_key_events_ = should_forward;
// For testing usage only.
const std::set<int> key_codes_to_capture_for_test() {
return key_codes_to_capture_;
const std::map<int, SwitchAccessCommand> command_for_key_code_map_for_test() {
return command_for_key_code_;
bool ShouldCancelEvent(const ui::KeyEvent& event) const;
bool ShouldForwardEvent(const ui::KeyEvent& event) const;
// ui::EventHandler:
void OnKeyEvent(ui::KeyEvent* event) override;
// The delegate used to send key events to the Switch Access extension.
SwitchAccessEventHandlerDelegate* delegate_;
std::set<int> key_codes_to_capture_;
std::map<int, SwitchAccessCommand> command_for_key_code_;
bool forward_key_events_ = false;
bool ignore_virtual_key_events_ = true;
} // namespace ash