xref: /frameworks/support/design/src/android/support/design/internal/ParcelableSparseArray.java

/*
 * Copyright (C) 2015 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.support.design.internal;

import android.os.Parcel;
import android.os.Parcelable;
import android.support.annotation.RestrictTo;
import android.support.v4.os.ParcelableCompat;
import android.support.v4.os.ParcelableCompatCreatorCallbacks;
import android.util.SparseArray;

import static android.support.annotation.RestrictTo.Scope.GROUP_ID;

/**
 * @hide
 */
@RestrictTo(GROUP_ID)
public class ParcelableSparseArray extends SparseArray<Parcelable> implements Parcelable {

    public ParcelableSparseArray() {
        super();
    }

    public ParcelableSparseArray(Parcel source, ClassLoader loader) {
        super();
        int size = source.readInt();
        int[] keys = new int[size];
        source.readIntArray(keys);
        Parcelable[] values = source.readParcelableArray(loader);
        for (int i = 0; i < size; ++i) {
            put(keys[i], values[i]);
        }
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int flags) {
        int size = size();
        int[] keys = new int[size];
        Parcelable[] values = new Parcelable[size];
        for (int i = 0; i < size; ++i) {
            keys[i] = keyAt(i);
            values[i] = valueAt(i);
        }
        parcel.writeInt(size);
        parcel.writeIntArray(keys);
        parcel.writeParcelableArray(values, flags);
    }

    public static final Parcelable.Creator<ParcelableSparseArray> CREATOR =
            ParcelableCompat
                    .newCreator(new ParcelableCompatCreatorCallbacks<ParcelableSparseArray>() {
                        @Override
                        public ParcelableSparseArray createFromParcel(Parcel source,
                                ClassLoader loader) {
                            return new ParcelableSparseArray(source, loader);
                        }

                        @Override
                        public ParcelableSparseArray[] newArray(int size) {
                            return new ParcelableSparseArray[size];
                        }
                    });
}