Merge history of Bluetooth API from frameworks/base

/*

 * Copyright (C) 2021 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package android.bluetooth;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.content.AttributionSource;

import java.util.List;

/**

 * Marker interface for a class which can have an {@link AttributionSource}

 * assigned to it; these are typically {@link android.os.Parcelable} classes

 * which need to be updated after crossing Binder transaction boundaries.

 *

 * @hide

 */

public interface Attributable {

    void setAttributionSource(@NonNull AttributionSource attributionSource);

    static @Nullable <T extends Attributable> T setAttributionSource(

            @Nullable T attributable,

            @NonNull AttributionSource attributionSource) {

        if (attributable != null) {

            attributable.setAttributionSource(attributionSource);

        }

        return attributable;

    }

    static @Nullable <T extends Attributable> List<T> setAttributionSource(

            @Nullable List<T> attributableList,

            @NonNull AttributionSource attributionSource) {

        if (attributableList != null) {

            final int size = attributableList.size();

            for (int i = 0; i < size; i++) {

                setAttributionSource(attributableList.get(i), attributionSource);

            }

        }

        return attributableList;

    }

}