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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.
#include "ash/accelerators/shortcut_input_handler.h"
#include "ash/events/event_rewriter_controller_impl.h"
#include "ash/public/cpp/accelerators_util.h"
#include "ash/public/mojom/input_device_settings.mojom.h"
#include "ash/shell.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/base/accelerators/ash/quick_insert_event_property.h"
#include "ui/events/event.h"
#include "ui/events/event_constants.h"
#include "ui/events/keycodes/dom/dom_code.h"
#include "ui/events/keycodes/dom/keycode_converter.h"
#include "ui/events/keycodes/keyboard_codes_posix.h"
#include "ui/events/types/event_type.h"
namespace ash {
namespace {
constexpr int kKeyboardModifierFlags = ui::EF_CONTROL_DOWN |
ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN |
ui::EF_ALT_DOWN | ui::EF_FUNCTION_DOWN;
ui::KeyboardCode RetrieveKeyCode(const ui::KeyEvent& event) {
// Remap positional keys in the current layout to the corresponding US layout
// KeyboardCode.
ui::KeyboardCode key_code =
ui::KeycodeConverter::MapPositionalDomCodeToUSShortcutKey(
event.code(), event.key_code());
if (key_code == ui::VKEY_UNKNOWN) {
key_code = event.key_code();
}
// TODO(b/327436148): Fix display mirror icon
if (key_code == ui::VKEY_UNKNOWN &&
event.code() == ui::DomCode::SHOW_ALL_WINDOWS) {
// Show all windows is through VKEY_MEDIA_LAUNCH_APP1.
key_code = ui::VKEY_MEDIA_LAUNCH_APP1;
}
if (ui::HasQuickInsertProperty(event)) {
key_code = ui::VKEY_QUICK_INSERT;
}
return key_code;
}
} // namespace
ShortcutInputHandler::ShortcutInputHandler() = default;
ShortcutInputHandler::~ShortcutInputHandler() {
CHECK(Shell::Get());
auto* event_forwarder =
Shell::Get()->event_rewriter_controller()->prerewritten_event_forwarder();
if (initialized_ && event_forwarder) {
event_forwarder->RemoveObserver(this);
}
}
void ShortcutInputHandler::Initialize() {
CHECK(Shell::Get());
if (!features::IsPeripheralCustomizationEnabled()) {
LOG(ERROR) << "ShortcutInputHandler can only be initialized if "
<< "peripherals customization flag is enabled.";
return;
}
auto* event_forwarder =
Shell::Get()->event_rewriter_controller()->prerewritten_event_forwarder();
if (!event_forwarder) {
LOG(ERROR) << "Attempted to initialiaze ShortcutInputHandler before "
<< "PrerewrittenEventForwarder was initialized.";
return;
}
initialized_ = true;
event_forwarder->AddObserver(this);
}
void ShortcutInputHandler::OnKeyEvent(ui::KeyEvent* event) {
if (event->is_repeat() || observers_.empty()) {
return;
}
const ui::KeyboardCode key_code = RetrieveKeyCode(*event);
mojom::KeyEvent key_event(key_code, static_cast<int>(event->code()),
static_cast<int>(event->GetDomKey()),
event->flags() & kKeyboardModifierFlags,
base::UTF16ToUTF8(GetKeyDisplay(key_code)));
if (event->type() == ui::EventType::kKeyPressed) {
for (auto& observer : observers_) {
observer.OnShortcutInputEventPressed(key_event);
}
} else {
for (auto& observer : observers_) {
observer.OnShortcutInputEventReleased(key_event);
}
}
if (should_consume_key_events_) {
event->StopPropagation();
}
}
void ShortcutInputHandler::OnPrerewriteKeyInputEvent(
const ui::KeyEvent& event) {
if (event.is_repeat() || observers_.empty()) {
return;
}
const ui::KeyboardCode key_code = RetrieveKeyCode(event);
mojom::KeyEvent key_event(key_code, static_cast<int>(event.code()),
static_cast<int>(event.GetDomKey()),
event.flags() & kKeyboardModifierFlags,
base::UTF16ToUTF8(GetKeyDisplay(key_code)));
if (event.type() == ui::EventType::kKeyPressed) {
for (auto& observer : observers_) {
observer.OnPrerewrittenShortcutInputEventPressed(key_event);
}
} else {
for (auto& observer : observers_) {
observer.OnPrerewrittenShortcutInputEventReleased(key_event);
}
}
}
void ShortcutInputHandler::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void ShortcutInputHandler::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void ShortcutInputHandler::SetShouldConsumeKeyEvents(
bool should_consume_key_events) {
should_consume_key_events_ = should_consume_key_events;
}
} // namespace ash
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