blob: 68f75298a83e9768ad495bd4beaedb7613d03b3c [file] [log] [blame]
// Copyright 2013 The Flutter 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 FLUTTER_SHELL_PLATFORM_WINDOWS_ACCESSIBILITY_BRIDGE_WINDOWS_H_
#define FLUTTER_SHELL_PLATFORM_WINDOWS_ACCESSIBILITY_BRIDGE_WINDOWS_H_
#include "flutter/shell/platform/common/accessibility_bridge.h"
#include "flutter/shell/platform/windows/flutter_windows_engine.h"
#include "flutter/shell/platform/windows/flutter_windows_view.h"
namespace flutter {
class FlutterWindowsEngine;
class FlutterPlatformNodeDelegateWindows;
// The Win32 implementation of AccessibilityBridge.
//
// This interacts with Windows accessibility APIs, which includes routing
// accessibility events fired from the framework to Windows, routing native
// Windows accessibility events to the framework, and creating Windows-specific
// FlutterPlatformNodeDelegate objects for each node in the semantics tree.
///
/// AccessibilityBridgeWindows must be created as a shared_ptr, since some
/// methods acquires its weak_ptr.
class AccessibilityBridgeWindows : public AccessibilityBridge {
public:
AccessibilityBridgeWindows(FlutterWindowsEngine* engine,
FlutterWindowsView* view);
virtual ~AccessibilityBridgeWindows() = default;
// |AccessibilityBridge|
void DispatchAccessibilityAction(AccessibilityNodeId target,
FlutterSemanticsAction action,
fml::MallocMapping data) override;
// Dispatches a Windows accessibility event of the specified type, generated
// by the accessibility node associated with the specified semantics node.
//
// This is a virtual method for the convenience of unit tests.
virtual void DispatchWinAccessibilityEvent(
std::shared_ptr<FlutterPlatformNodeDelegateWindows> node_delegate,
DWORD event_type);
// Sets the accessibility focus to the accessibility node associated with the
// specified semantics node.
//
// This is a virtual method for the convenience of unit tests.
virtual void SetFocus(
std::shared_ptr<FlutterPlatformNodeDelegateWindows> node_delegate);
protected:
// |AccessibilityBridge|
void OnAccessibilityEvent(
ui::AXEventGenerator::TargetedEvent targeted_event) override;
// |AccessibilityBridge|
std::shared_ptr<FlutterPlatformNodeDelegate>
CreateFlutterPlatformNodeDelegate() override;
private:
FlutterWindowsEngine* engine_;
FlutterWindowsView* view_;
};
} // namespace flutter
#endif // FLUTTER_SHELL_PLATFORM_WINDOWS_ACCESSIBILITY_BRIDGE_WINDOWS_H_