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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 UI_BASE_IME_FUCHSIA_KEYBOARD_CLIENT_H_
#define UI_BASE_IME_FUCHSIA_KEYBOARD_CLIENT_H_
#include <fidl/fuchsia.ui.input3/cpp/fidl.h>
#include <lib/fidl/cpp/binding.h>
#include <optional>
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
namespace ui {
class InputEventSink;
// Handles keyboard events from the Fuchsia keyboard service.
class COMPONENT_EXPORT(UI_BASE_IME_FUCHSIA) KeyboardClient
: public fidl::Server<fuchsia_ui_input3::KeyboardListener> {
public:
// `keyboard_service` and `event_sink` must outlive `this`.
KeyboardClient(
fidl::Client<fuchsia_ui_input3::Keyboard>& keyboard_fidl_client,
fuchsia_ui_views::ViewRef view_ref,
InputEventSink* event_sink);
~KeyboardClient() override;
KeyboardClient(const KeyboardClient&) = delete;
KeyboardClient& operator=(const KeyboardClient&) = delete;
// fuchsia_ui_input3::KeyboardListener implementation.
void OnKeyEvent(OnKeyEventRequest& request,
OnKeyEventCompleter::Sync& completer) final;
private:
bool IsValid(const fuchsia_ui_input3::KeyEvent& key_event);
// Handles converting and propagating `key_event`. Returns false if critical
// information about `key_event` is missing, or if the key's event type is not
// supported.
// TODO(http://fxbug.dev/69620): Add support for SYNC and CANCEL key event
// types.
bool ProcessKeyEvent(const fuchsia_ui_input3::KeyEvent& key_event);
// Update the value of modifiers such as shift.
void UpdateCachedModifiers(const fuchsia_ui_input3::KeyEvent& key_event);
// Translate state of locally tracked modifier keys (e.g. shift, alt) into
// ui::Event flags.
int EventFlagsForCachedModifiers();
std::optional<fidl::ServerBinding<fuchsia_ui_input3::KeyboardListener>>
binding_;
// Dispatches events into Chromium once they have been converted to
// ui::KeyEvents.
const raw_ptr<InputEventSink> event_sink_;
};
} // namespace ui
#endif // UI_BASE_IME_FUCHSIA_KEYBOARD_CLIENT_H_
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