1 /*
2  * Copyright (C) 2020 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.settings.development.storage;
18 
19 import android.app.blob.BlobStoreManager;
20 import android.content.Context;
21 import android.os.UserHandle;
22 import android.util.Log;
23 
24 import androidx.preference.Preference;
25 
26 import com.android.settings.R;
27 import com.android.settings.core.PreferenceControllerMixin;
28 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
29 
30 import java.io.IOException;
31 
32 public class SharedDataPreferenceController extends DeveloperOptionsPreferenceController
33         implements PreferenceControllerMixin {
34     private static final String TAG = "SharedDataPrefCtrl";
35     private static final String SHARED_DATA = "shared_data";
36 
37     private BlobStoreManager mBlobStoreManager;
38 
SharedDataPreferenceController(Context context)39     public SharedDataPreferenceController(Context context) {
40         super(context);
41         mBlobStoreManager = (BlobStoreManager) context.getSystemService(BlobStoreManager.class);
42     }
43 
44     @Override
getPreferenceKey()45     public String getPreferenceKey() {
46         return SHARED_DATA;
47     }
48 
49     @Override
updateState(Preference preference)50     public void updateState(Preference preference) {
51         try {
52             final boolean showPref = mBlobStoreManager != null
53                     && !mBlobStoreManager.queryBlobsForUser(UserHandle.CURRENT).isEmpty();
54             preference.setEnabled(showPref);
55             preference.setSummary(showPref ? R.string.shared_data_summary
56                                            : R.string.shared_data_no_blobs_text);
57         } catch (IOException e) {
58             Log.e(TAG, "Unable to fetch blobs for current user: " + e.getMessage());
59             preference.setEnabled(false);
60             preference.setSummary(R.string.shared_data_no_blobs_text);
61         }
62     }
63 }
64