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.security;
18 
19 import android.content.Context;
20 import android.content.pm.ApplicationInfo;
21 import android.content.pm.PackageManager;
22 import android.os.Handler;
23 import android.os.Looper;
24 import android.os.RemoteException;
25 import android.security.IKeyChainService;
26 import android.security.KeyChain;
27 import android.util.Log;
28 import android.view.View;
29 import android.widget.ImageView;
30 import android.widget.TextView;
31 
32 import androidx.preference.PreferenceScreen;
33 
34 import com.android.settings.R;
35 import com.android.settings.core.BasePreferenceController;
36 import com.android.settingslib.widget.LayoutPreference;
37 
38 import java.util.concurrent.ExecutorService;
39 import java.util.concurrent.Executors;
40 
41 /**
42  * Controller that shows the header of the credential management app, which includes credential
43  * management app's name, icon and a description.
44  */
45 public class CredentialManagementAppHeaderController extends BasePreferenceController {
46 
47     private static final String TAG = "CredentialManagementApp";
48 
49     private final ExecutorService mExecutor = Executors.newSingleThreadExecutor();
50     private final Handler mHandler = new Handler(Looper.getMainLooper());
51 
CredentialManagementAppHeaderController(Context context, String preferenceKey)52     public CredentialManagementAppHeaderController(Context context, String preferenceKey) {
53         super(context, preferenceKey);
54         mPackageManager = context.getPackageManager();
55     }
56 
57     private final PackageManager mPackageManager;
58     private String mCredentialManagerPackageName;
59 
60     @Override
getAvailabilityStatus()61     public int getAvailabilityStatus() {
62         return AVAILABLE_UNSEARCHABLE;
63     }
64 
65     @Override
displayPreference(PreferenceScreen screen)66     public void displayPreference(PreferenceScreen screen) {
67         super.displayPreference(screen);
68 
69         mExecutor.execute(() -> {
70             try {
71                 IKeyChainService service = KeyChain.bind(mContext).getService();
72                 mCredentialManagerPackageName = service.getCredentialManagementAppPackageName();
73             } catch (InterruptedException | RemoteException e) {
74                 Log.e(TAG, "Unable to display credential management app header");
75             }
76             mHandler.post(() -> displayHeader(screen));
77         });
78     }
79 
displayHeader(PreferenceScreen screen)80     private void displayHeader(PreferenceScreen screen) {
81         LayoutPreference headerPref = screen.findPreference(getPreferenceKey());
82         ImageView appIconView = headerPref.findViewById(R.id.entity_header_icon);
83         TextView titleView = headerPref.findViewById(R.id.entity_header_title);
84         TextView summary1 = headerPref.findViewById(R.id.entity_header_summary);
85         TextView summary2 = headerPref.findViewById(
86                 com.android.settingslib.widget.preference.layout.R.id.entity_header_second_summary);
87         summary2.setVisibility(View.GONE);
88 
89         try {
90             ApplicationInfo applicationInfo =
91                     mPackageManager.getApplicationInfo(mCredentialManagerPackageName, 0);
92             appIconView.setImageDrawable(mPackageManager.getApplicationIcon(applicationInfo));
93             titleView.setText(applicationInfo.loadLabel(mPackageManager));
94             summary1.setText(R.string.certificate_management_app_description);
95         } catch (PackageManager.NameNotFoundException e) {
96             appIconView.setImageDrawable(null);
97             titleView.setText(mCredentialManagerPackageName);
98         }
99     }
100 }
101