text: // Copyright 2014 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 CONTENT_WEB_TEST_RENDERER_ACCESSIBILITY_CONTROLLER_H_
  #define CONTENT_WEB_TEST_RENDERER_ACCESSIBILITY_CONTROLLER_H_
  
  #include <vector>
  
  #include <memory>
  #include <string>
  
  #include "base/memory/weak_ptr.h"
  #include "content/web_test/renderer/web_ax_object_proxy.h"
  #include "third_party/blink/public/web/web_ax_object.h"
  #include "ui/accessibility/ax_event_intent.h"
  #include "v8/include/v8.h"
  
  namespace blink {
  
  class WebAXContext;
  class WebLocalFrame;
  class WebString;
  class WebView;
  
  }  // namespace blink
  
  namespace content {
  
  class WebFrameTestProxy;
  
  class AccessibilityController {
   public:
    explicit AccessibilityController(WebFrameTestProxy* web_frame_test_proxy);
  
    AccessibilityController(const AccessibilityController&) = delete;
    AccessibilityController& operator=(const AccessibilityController&) = delete;
  
    ~AccessibilityController();
  
    void Reset();
    void Install(blink::WebLocalFrame* frame);
    bool ShouldLogAccessibilityEvents();
    void NotificationReceived(
        blink::WebLocalFrame* frame,
        const blink::WebAXObject& target,
        const std::string& notification_name,
        const std::vector<ui::AXEventIntent>& event_intents);
    void PostNotification(const blink::WebAXObject& target,
                          const std::string& notification_name,
                          const std::vector<ui::AXEventIntent>& event_intents);
  
   private:
    friend class AccessibilityControllerBindings;
  
    // Bound methods and properties
    void LogAccessibilityEvents();
    void SetNotificationListener(v8::Local<v8::Function> callback);
    void UnsetNotificationListener();
    v8::Local<v8::Object> FocusedElement();
    v8::Local<v8::Object> RootElement();
    v8::Local<v8::Object> AccessibleElementById(const std::string& id);
    bool CanCallAOMEventListeners() const;
  
    v8::Local<v8::Object> FindAccessibleElementByIdRecursive(
        const blink::WebAXObject&,
        const blink::WebString& id);
  
    blink::WebAXObject GetAccessibilityObjectForMainFrame() const;
  
    // If true, will log all accessibility notifications.
    bool log_accessibility_events_;
  
    WebAXObjectProxyList elements_;
  
    v8::Persistent<v8::Function> notification_callback_;
  
    blink::WebView* web_view() const;
    WebFrameTestProxy* web_frame_test_proxy_;
  
    std::unique_ptr<blink::WebAXContext> ax_context_;
  
    base::WeakPtrFactory<AccessibilityController> weak_factory_{this};
  };
  
  }  // namespace content
  
  #endif  // CONTENT_WEB_TEST_RENDERER_ACCESSIBILITY_CONTROLLER_H_
  