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// Copyright (c) 2013 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_ACCESSIBILITY_ACCESSIBILITY_UI_H_
#define CHROME_BROWSER_ACCESSIBILITY_ACCESSIBILITY_UI_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/values.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_ui_controller.h"
#include "content/public/browser/web_ui_data_source.h"
#include "content/public/browser/web_ui_message_handler.h"
namespace content {
struct AXEventNotificationDetails;
class WebContents;
} // namespace content
namespace user_prefs {
class PrefRegistrySyncable;
} // namespace user_prefs
// Controls the accessibility web UI page.
class AccessibilityUI : public content::WebUIController {
public:
explicit AccessibilityUI(content::WebUI* web_ui);
~AccessibilityUI() override;
};
// Observes accessibility events from web contents.
class AccessibilityUIObserver : public content::WebContentsObserver {
public:
AccessibilityUIObserver(content::WebContents* web_contents,
std::vector<std::string>* event_logs);
~AccessibilityUIObserver() override;
void AccessibilityEventReceived(
const content::AXEventNotificationDetails& details) override;
private:
raw_ptr<std::vector<std::string>> event_logs_;
};
// Manages messages sent from accessibility.js via json.
class AccessibilityUIMessageHandler : public content::WebUIMessageHandler {
public:
AccessibilityUIMessageHandler();
AccessibilityUIMessageHandler(const AccessibilityUIMessageHandler&) = delete;
AccessibilityUIMessageHandler& operator=(
const AccessibilityUIMessageHandler&) = delete;
~AccessibilityUIMessageHandler() override;
void RegisterMessages() override;
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
private:
std::vector<std::string> event_logs_;
std::unique_ptr<AccessibilityUIObserver> observer_;
void ToggleAccessibility(const base::Value::List& args);
void SetGlobalFlag(const base::Value::List& args);
void GetRequestTypeAndFilters(const base::Value::Dict& data,
std::string& request_type,
std::string& allow,
std::string& allow_empty,
std::string& deny);
void RequestWebContentsTree(const base::Value::List& args);
void RequestNativeUITree(const base::Value::List& args);
void RequestWidgetsTree(const base::Value::List& args);
void RequestAccessibilityEvents(const base::Value::List& args);
void Callback(const std::string&);
void StopRecording(content::WebContents* web_contents);
base::WeakPtrFactory<AccessibilityUIMessageHandler> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_ACCESSIBILITY_ACCESSIBILITY_UI_H_
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