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.notification.app;
18 
19 import android.content.Context;
20 import android.os.AsyncTask;
21 import android.service.notification.ConversationChannelWrapper;
22 import android.view.View;
23 
24 import androidx.preference.Preference;
25 
26 import com.android.settings.R;
27 import com.android.settings.notification.NotificationBackend;
28 import com.android.settingslib.widget.LayoutPreference;
29 
30 import java.util.List;
31 
32 public class NoConversationsPreferenceController extends ConversationListPreferenceController {
33 
34     private static final String KEY = "no_conversations";
35 
36     private List<ConversationChannelWrapper> mConversations;
37 
NoConversationsPreferenceController(Context context, NotificationBackend backend)38     public NoConversationsPreferenceController(Context context,
39             NotificationBackend backend) {
40         super(context, backend);
41     }
42 
43     @Override
getPreferenceKey()44     public String getPreferenceKey() {
45         return KEY;
46     }
47 
48     @Override
isAvailable()49     public boolean isAvailable() {
50         return true;
51     }
52 
53     @Override
getSummaryPreference()54     Preference getSummaryPreference() {
55         return null;
56     }
57 
58     @Override
matchesFilter(ConversationChannelWrapper conversation)59     boolean matchesFilter(ConversationChannelWrapper conversation) {
60         return false;
61     }
62 
63     @Override
updateState(Preference preference)64     public void updateState(Preference preference) {
65         LayoutPreference pref = (LayoutPreference) preference;
66         // Load conversations
67         new AsyncTask<Void, Void, Void>() {
68             @Override
69             protected Void doInBackground(Void... unused) {
70                 mConversations = mBackend.getConversations(false).getList();
71                 return null;
72             }
73 
74             @Override
75             protected void onPostExecute(Void unused) {
76                 if (mContext == null) {
77                     return;
78                 }
79                 pref.findViewById(R.id.onboarding).setVisibility(mConversations.size() == 0
80                         ? View.VISIBLE : View.GONE);
81                 preference.setVisible(mConversations.size() == 0);
82             }
83         }.execute();
84     }
85 }
86