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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 
     17 package com.android.tv.settings.device.apps;
     18 
     19 import android.content.Context;
     20 import android.os.Bundle;
     21 import android.support.annotation.NonNull;
     22 import android.support.v17.leanback.widget.GuidanceStylist;
     23 import android.text.format.Formatter;
     24 
     25 import com.android.settingslib.applications.ApplicationsState;
     26 import com.android.tv.settings.R;
     27 
     28 public class ClearCachePreference extends AppActionPreference {
     29     private boolean mClearingCache;
     30 
     31     public ClearCachePreference(Context context, ApplicationsState.AppEntry entry) {
     32         super(context, entry);
     33 
     34         refresh();
     35         ConfirmationFragment.prepareArgs(getExtras(), mEntry.info.packageName);
     36     }
     37 
     38     public void refresh() {
     39         setTitle(R.string.device_apps_app_management_clear_cache);
     40         final Context context = getContext();
     41         setSummary(mClearingCache ? context.getString(R.string.computing_size)
     42                 : Formatter.formatFileSize(context, mEntry.cacheSize + mEntry.externalCacheSize));
     43         setEnabled(!mClearingCache && mEntry.cacheSize > 0);
     44     }
     45 
     46     public void setClearingCache(boolean clearingCache) {
     47         mClearingCache = clearingCache;
     48         refresh();
     49     }
     50 
     51     @Override
     52     public String getFragment() {
     53         return ConfirmationFragment.class.getName();
     54     }
     55 
     56     public static class ConfirmationFragment extends AppActionPreference.ConfirmationFragment {
     57         private static final String ARG_PACKAGE_NAME = "packageName";
     58 
     59         private static void prepareArgs(@NonNull Bundle args, String packageName) {
     60             args.putString(ARG_PACKAGE_NAME, packageName);
     61         }
     62 
     63         @NonNull
     64         @Override
     65         public GuidanceStylist.Guidance onCreateGuidance(Bundle savedInstanceState) {
     66             final AppManagementFragment fragment = (AppManagementFragment) getTargetFragment();
     67             return new GuidanceStylist.Guidance(
     68                     getString(R.string.device_apps_app_management_clear_cache),
     69                     null,
     70                     fragment.getAppName(),
     71                     fragment.getAppIcon());
     72         }
     73 
     74         @Override
     75         public void onOk() {
     76             final AppManagementFragment fragment =
     77                     (AppManagementFragment) getTargetFragment();
     78             fragment.clearCache();
     79         }
     80     }
     81 }
     82