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      1 /*
      2  * Copyright (C) 2014 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.launcher3.compat;
     18 
     19 import android.content.Context;
     20 
     21 import java.util.HashMap;
     22 
     23 public abstract class PackageInstallerCompat {
     24 
     25     public static final int STATUS_INSTALLED = 0;
     26     public static final int STATUS_INSTALLING = 1;
     27     public static final int STATUS_FAILED = 2;
     28 
     29     private static final Object sInstanceLock = new Object();
     30     private static PackageInstallerCompat sInstance;
     31 
     32     public static PackageInstallerCompat getInstance(Context context) {
     33         synchronized (sInstanceLock) {
     34             if (sInstance == null) {
     35                 sInstance = new PackageInstallerCompatVL(context);
     36             }
     37             return sInstance;
     38         }
     39     }
     40 
     41     /**
     42      * @return a map of active installs to their progress
     43      */
     44     public abstract HashMap<String, Integer> updateAndGetActiveSessionCache();
     45 
     46     public abstract void onStop();
     47 
     48     public static final class PackageInstallInfo {
     49         public final String packageName;
     50 
     51         public int state;
     52         public int progress;
     53 
     54         public PackageInstallInfo(String packageName) {
     55             this.packageName = packageName;
     56         }
     57 
     58         public PackageInstallInfo(String packageName, int state, int progress) {
     59             this.packageName = packageName;
     60             this.state = state;
     61             this.progress = progress;
     62         }
     63     }
     64 }
     65