chrome/browser/android/preferences/shared_preferences_migrator_android.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/android/preferences/shared_preferences_migrator_android.h"

#include <string>

#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/check.h"
#include "chrome/browser/preferences/jni_headers/SharedPreferencesManager_jni.h"
#include "third_party/abseil-cpp/absl/types/optional.h"

using base::android::AttachCurrentThread;
using base::android::ConvertUTF8ToJavaString;
using base::android::ScopedJavaLocalRef;

namespace android::shared_preferences {

absl::optional<bool> GetAndClearBoolean(
    const std::string& shared_preference_key) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> jshared_prefs_manager =
      Java_SharedPreferencesManager_getInstance(env);

  DCHECK(!jshared_prefs_manager.is_null());

  ScopedJavaLocalRef<jstring> jkey =
      ConvertUTF8ToJavaString(env, shared_preference_key);
  if (!Java_SharedPreferencesManager_contains(env, jshared_prefs_manager,
                                              jkey)) {
    return absl::nullopt;
  }

  bool result = Java_SharedPreferencesManager_readBoolean(
      env, jshared_prefs_manager, jkey, /*defaultValue=*/false);
  Java_SharedPreferencesManager_removeKey(env, jshared_prefs_manager, jkey);
  return result;
}

}  // namespace android::shared_preferences