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      1 /*
      2  * Copyright (C) 2016 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 
     17 package com.android.tv.data;
     18 
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 
     22 import java.util.ArrayList;
     23 import java.util.Collection;
     24 import java.util.List;
     25 
     26 /**
     27  * A convenience class for the list of {@link Parcelable}s.
     28  */
     29 public final class ParcelableList<T extends Parcelable> implements Parcelable {
     30     /**
     31      * Create instance from {@link Parcel}.
     32      */
     33     public static ParcelableList fromParcel(Parcel in) {
     34         ParcelableList list = new ParcelableList();
     35         int length = in.readInt();
     36         if (length > 0) {
     37             for (int i = 0; i < length; ++i) {
     38                 list.mList.add(in.readParcelable(Thread.currentThread().getContextClassLoader()));
     39             }
     40         }
     41         return list;
     42     }
     43 
     44     /**
     45      * A creator for {@link ParcelableList}.
     46      */
     47     public static final Creator<ParcelableList> CREATOR = new Creator<ParcelableList>() {
     48         @Override
     49         public ParcelableList createFromParcel(Parcel in) {
     50             return ParcelableList.fromParcel(in);
     51         }
     52 
     53         @Override
     54         public ParcelableList[] newArray(int size) {
     55             return new ParcelableList[size];
     56         }
     57     };
     58 
     59     private final List<T> mList = new ArrayList<>();
     60 
     61     private ParcelableList() { }
     62 
     63     public ParcelableList(Collection<T> initialList) {
     64         mList.addAll(initialList);
     65     }
     66 
     67     /**
     68      * Returns the list.
     69      */
     70     public List<T> getList() {
     71         return new ArrayList<T>(mList);
     72     }
     73 
     74     @Override
     75     public int describeContents() {
     76         return 0;
     77     }
     78 
     79     @Override
     80     public void writeToParcel(Parcel out, int paramInt) {
     81         out.writeInt(mList.size());
     82         for (T data : mList) {
     83             out.writeParcelable(data, 0);
     84         }
     85     }
     86 }
     87