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      1 /*
      2  * Copyright (C) 2015 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 package com.android.messaging.datamodel.media;
     17 
     18 import java.util.List;
     19 
     20 /**
     21  * Holds cached information of VCard contact info.
     22  * The temporarily persisted avatar icon Uri is tied to the VCardResource. As a result, whenever
     23  * the VCardResource is no longer used (i.e. close() is called), we need to asynchronously
     24  * delete the avatar image from temp storage since no one will have reference to the avatar Uri
     25  * again. The next time the same VCard is displayed, since the old resource has been evicted from
     26  * the memory cache, we'll load and persist the avatar icon again.
     27  */
     28 public class VCardResource extends RefCountedMediaResource {
     29     private final List<VCardResourceEntry> mVCards;
     30 
     31     public VCardResource(final String key, final List<VCardResourceEntry> vcards) {
     32         super(key);
     33         mVCards = vcards;
     34     }
     35 
     36     public List<VCardResourceEntry> getVCards() {
     37         return mVCards;
     38     }
     39 
     40     @Override
     41     public int getMediaSize() {
     42         // Instead of track VCards by size in kilobytes, we track them by count.
     43         return 0;
     44     }
     45 
     46     @Override
     47     protected void close() {
     48         for (final VCardResourceEntry vcard : mVCards) {
     49             vcard.close();
     50         }
     51     }
     52 }
     53