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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_WEBUI_ASH_SETTINGS_PAGES_DEVICE_DEVICE_KEYBOARD_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_ASH_SETTINGS_PAGES_DEVICE_DEVICE_KEYBOARD_HANDLER_H_
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
#include "ui/events/devices/device_data_manager.h"
#include "ui/events/devices/input_device_event_observer.h"
namespace ash::settings {
// Chrome OS "Keyboard" settings page UI handler.
class KeyboardHandler : public ::settings::SettingsPageUIHandler,
public ui::InputDeviceEventObserver {
public:
// Name of the message sent to WebUI when the keys that should be shown
// change.
static const char kShowKeysChangedName[];
// Class used by tests to interact with KeyboardHandler internals.
class TestAPI {
public:
explicit TestAPI(KeyboardHandler* handler) { handler_ = handler; }
TestAPI(const TestAPI&) = delete;
TestAPI& operator=(const TestAPI&) = delete;
// Simulates a request from WebUI to initialize the page.
void Initialize();
private:
raw_ptr<KeyboardHandler> handler_; // Not owned.
};
KeyboardHandler();
KeyboardHandler(const KeyboardHandler&) = delete;
KeyboardHandler& operator=(const KeyboardHandler&) = delete;
~KeyboardHandler() override;
// SettingsPageUIHandler implementation.
void RegisterMessages() override;
void OnJavascriptAllowed() override;
void OnJavascriptDisallowed() override;
// ui::InputDeviceEventObserver implementation.
void OnInputDeviceConfigurationChanged(uint8_t input_device_types) override;
private:
// Initializes the page with the current keyboard information.
void HandleInitialize(const base::Value::List& args);
// Shows the Ash shortcut customization app.
void HandleShowShortcutCustomizationApp(const base::Value::List& args) const;
// Determines what types of keyboards are attached.
void HandleKeyboardChange(const base::Value::List& args);
// Shows or hides the Caps Lock and Diamond key settings based on whether the
// system status.
void UpdateShowKeys();
// Sends the UI a message about whether hardware keyboard are attached.
void UpdateKeyboards();
base::ScopedObservation<ui::DeviceDataManager, ui::InputDeviceEventObserver>
observation_{this};
};
} // namespace ash::settings
#endif // CHROME_BROWSER_UI_WEBUI_ASH_SETTINGS_PAGES_DEVICE_DEVICE_KEYBOARD_HANDLER_H_
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