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// Copyright 2019 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.
#ifndef CHROME_BROWSER_UI_WEBUI_SETTINGS_ACCESSIBILITY_MAIN_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_SETTINGS_ACCESSIBILITY_MAIN_HANDLER_H_
#include <memory>
#include <string>
#include "base/macros.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#else
#include "base/scoped_observer.h"
#include "components/component_updater/component_updater_service.h"
#endif // defined(OS_CHROMEOS)
namespace base {
class ListValue;
}
class PrefService;
namespace settings {
// Settings handler for the main accessibility settings page,
// chrome://settings/accessibility.
// TODO(1055150) Implement the SODA download progress handling on ChromeOS and
// remove the ChromeOS-only class declaration.
#if defined(OS_CHROMEOS)
class AccessibilityMainHandler : public ::settings::SettingsPageUIHandler {
public:
AccessibilityMainHandler();
#else
class AccessibilityMainHandler : public ::settings::SettingsPageUIHandler,
public component_updater::ServiceObserver {
public:
explicit AccessibilityMainHandler(PrefService* prefs);
#endif // defined(OS_CHROMEOS)
~AccessibilityMainHandler() override;
// SettingsPageUIHandler implementation.
void RegisterMessages() override;
void OnJavascriptAllowed() override;
void OnJavascriptDisallowed() override;
void HandleA11yPageReady(const base::ListValue* args);
void HandleCheckAccessibilityImageLabels(const base::ListValue* args);
private:
void SendScreenReaderStateChanged();
#if defined(OS_CHROMEOS)
void OnAccessibilityStatusChanged(
const chromeos::AccessibilityStatusEventDetails& details);
std::unique_ptr<chromeos::AccessibilityStatusSubscription>
accessibility_subscription_;
#else
// component_updater::ServiceObserver:
void OnEvent(Events event, const std::string& id) override;
PrefService* prefs_;
ScopedObserver<component_updater::ComponentUpdateService,
component_updater::ComponentUpdateService::Observer>
component_updater_observer_{this};
#endif // defined(OS_CHROMEOS)
DISALLOW_COPY_AND_ASSIGN(AccessibilityMainHandler);
};
} // namespace settings
#endif // CHROME_BROWSER_UI_WEBUI_SETTINGS_ACCESSIBILITY_MAIN_HANDLER_H_