Home | History | Annotate | Download | only in health 
      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 android.os.health;
     18 
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 import android.util.ArrayMap;
     22 
     23 import java.util.Arrays;
     24 import java.util.Map;
     25 
     26 /**
     27  * Class to allow sending the HealthStats through aidl generated glue.
     28  *
     29  * The alternative would be to send a HealthStats object, which would
     30  * require constructing one, and then immediately flattening it. This
     31  * saves that step at the cost of doing the extra flattening when
     32  * accessed in the same process as the writer.
     33  *
     34  * The HealthStatsWriter passed in the constructor is retained, so don't
     35  * reuse them.
     36  * @hide
     37  */
     38 public class HealthStatsParceler implements Parcelable {
     39     private HealthStatsWriter mWriter;
     40     private HealthStats mHealthStats;
     41 
     42     public static final Parcelable.Creator<HealthStatsParceler> CREATOR
     43             = new Parcelable.Creator<HealthStatsParceler>() {
     44         public HealthStatsParceler createFromParcel(Parcel in) {
     45             return new HealthStatsParceler(in);
     46         }
     47 
     48         public HealthStatsParceler[] newArray(int size) {
     49             return new HealthStatsParceler[size];
     50         }
     51     };
     52 
     53     public HealthStatsParceler(HealthStatsWriter writer) {
     54         mWriter = writer;
     55     }
     56 
     57     public HealthStatsParceler(Parcel in) {
     58         mHealthStats = new HealthStats(in);
     59     }
     60 
     61     public int describeContents() {
     62         return 0;
     63     }
     64 
     65     public void writeToParcel(Parcel out, int flags) {
     66         // See comment on mWriter declaration above.
     67         if (mWriter != null) {
     68             mWriter.flattenToParcel(out);
     69         } else {
     70             throw new RuntimeException("Can not re-parcel HealthStatsParceler that was"
     71                     + " constructed from a Parcel");
     72         }
     73     }
     74 
     75     public HealthStats getHealthStats() {
     76         if (mWriter != null) {
     77             final Parcel parcel = Parcel.obtain();
     78             mWriter.flattenToParcel(parcel);
     79             parcel.setDataPosition(0);
     80             mHealthStats = new HealthStats(parcel);
     81             parcel.recycle();
     82         }
     83 
     84         return mHealthStats;
     85     }
     86 }
     87 
     88