1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.os;
18
19import android.util.MathUtils;
20
21/**
22 * Parcelable containing a raw Parcel of data.
23 * @hide
24 */
25public class ParcelableParcel implements Parcelable {
26    final Parcel mParcel;
27    final ClassLoader mClassLoader;
28
29    public ParcelableParcel(ClassLoader loader) {
30        mParcel = Parcel.obtain();
31        mClassLoader = loader;
32    }
33
34    public ParcelableParcel(Parcel src, ClassLoader loader) {
35        mParcel = Parcel.obtain();
36        mClassLoader = loader;
37        int size = src.readInt();
38        if (size < 0) {
39            throw new IllegalArgumentException("Negative size read from parcel");
40        }
41
42        int pos = src.dataPosition();
43        src.setDataPosition(MathUtils.addOrThrow(pos, size));
44        mParcel.appendFrom(src, pos, size);
45    }
46
47    public Parcel getParcel() {
48        mParcel.setDataPosition(0);
49        return mParcel;
50    }
51
52    public ClassLoader getClassLoader() {
53        return mClassLoader;
54    }
55
56    @Override
57    public int describeContents() {
58        return 0;
59    }
60
61    @Override
62    public void writeToParcel(Parcel dest, int flags) {
63        dest.writeInt(mParcel.dataSize());
64        dest.appendFrom(mParcel, 0, mParcel.dataSize());
65    }
66
67    public static final Parcelable.ClassLoaderCreator<ParcelableParcel> CREATOR
68            = new Parcelable.ClassLoaderCreator<ParcelableParcel>() {
69        public ParcelableParcel createFromParcel(Parcel in) {
70            return new ParcelableParcel(in, null);
71        }
72
73        public ParcelableParcel createFromParcel(Parcel in, ClassLoader loader) {
74            return new ParcelableParcel(in, loader);
75        }
76
77        public ParcelableParcel[] newArray(int size) {
78            return new ParcelableParcel[size];
79        }
80    };
81}
82