platform_view_android_delegate.h

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// 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_ANDROID_PLATFORM_VIEW_ANDROID_DELEGATE_PLATFORM_VIEW_ANDROID_DELEGATE_H_
#define FLUTTER_SHELL_PLATFORM_ANDROID_PLATFORM_VIEW_ANDROID_DELEGATE_PLATFORM_VIEW_ANDROID_DELEGATE_H_
 
#include <memory>
#include <string>
#include <vector>
 
#include "flutter/shell/common/platform_view.h"
#include "flutter/shell/platform/android/jni/platform_view_android_jni.h"
 
namespace flutter {
 
class PlatformViewAndroidDelegate {
 public:
  static constexpr size_t kBytesPerNode =
      52 * sizeof(int32_t);  // The # fields in SemanticsNode
  static constexpr size_t kBytesPerChild = sizeof(int32_t);
  static constexpr size_t kBytesPerCustomAction = sizeof(int32_t);
  static constexpr size_t kBytesPerAction = 4 * sizeof(int32_t);
  static constexpr size_t kBytesPerStringAttribute = 4 * sizeof(int32_t);
  static constexpr int kEmptyStringIndex = -1;
  explicit PlatformViewAndroidDelegate(
      std::shared_ptr<PlatformViewAndroidJNI> jni_facade);
  void UpdateSemantics(
      const flutter::SemanticsNodeUpdates& update,
      const flutter::CustomAccessibilityActionUpdates& actions);
 
 private:
  const std::shared_ptr<PlatformViewAndroidJNI> jni_facade_;
};
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_ANDROID_PLATFORM_VIEW_ANDROID_DELEGATE_PLATFORM_VIEW_ANDROID_DELEGATE_H_