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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.tv.settings.device.apps;
     18 
     19 import com.android.tv.settings.R;
     20 
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.IPackageDataObserver;
     25 
     26 /**
     27  * Handles clearing an application's cache.
     28  */
     29 class CacheClearer {
     30 
     31     interface Listener {
     32         void cacheCleared(boolean succeeded);
     33     }
     34 
     35     private final Listener mListener;
     36     private final AppInfo mAppInfo;
     37     private boolean mClearingCache;
     38 
     39     CacheClearer(Listener listener, AppInfo appInfo) {
     40         mListener = listener;
     41         mAppInfo = appInfo;
     42         mClearingCache = false;
     43     }
     44 
     45     void clearCache(Context context) {
     46         PackageManager packageManager = context.getPackageManager();
     47 
     48         mClearingCache = true;
     49         packageManager.deleteApplicationCacheFiles(mAppInfo.getPackageName(),
     50                 new IPackageDataObserver.Stub() {
     51                     public void onRemoveCompleted(final String packageName,
     52                             final boolean succeeded) {
     53                         mClearingCache = false;
     54                         mListener.cacheCleared(succeeded);
     55                     }
     56                 });
     57 
     58         // Send out broadcast to clear canvas disk cache.
     59         Intent intent = new Intent();
     60         intent.setAction("com.google.android.canvas.data.ClusterDiskCache.CLEAR_CACHE_APP");
     61         intent.putExtra("packageName", mAppInfo.getPackageName());
     62         context.sendBroadcast(intent);
     63     }
     64 
     65     String getCacheSize(Context context) {
     66         return (mClearingCache) ? context.getString(R.string.computing_size)
     67                 : mAppInfo.getCacheSize();
     68     }
     69 }
     70