1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.settings.display.darkmode;
16 
17 import android.content.Context;
18 import android.os.Bundle;
19 import android.app.settings.SettingsEnums;
20 import com.android.settings.R;
21 import com.android.settings.dashboard.DashboardFragment;
22 import com.android.settings.search.BaseSearchIndexProvider;
23 import com.android.settingslib.search.SearchIndexable;
24 
25 /**
26  * Settings screen for Dark UI Mode
27  */
28 @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
29 public class DarkModeSettingsFragment extends DashboardFragment {
30 
31     private static final String TAG = "DarkModeSettingsFragment";
32     private DarkModeObserver mContentObserver;
33     private Runnable mCallback = () -> {
34         updatePreferenceStates();
35     };
36 
37     @Override
onCreate(Bundle savedInstanceState)38     public void onCreate(Bundle savedInstanceState) {
39         super.onCreate(savedInstanceState);
40 
41         final Context context = getContext();
42         mContentObserver = new DarkModeObserver(context);
43     }
44 
45     @Override
onStart()46     public void onStart() {
47         super.onStart();
48         // Listen for changes only while visible.
49         mContentObserver.subscribe(mCallback);
50     }
51 
52     @Override
onStop()53     public void onStop() {
54         super.onStop();
55         // Stop listening for state changes.
56         mContentObserver.unsubscribe();
57     }
58 
59     @Override
getPreferenceScreenResId()60     protected int getPreferenceScreenResId() {
61         return R.xml.dark_mode_settings;
62     }
63 
64     @Override
getHelpResource()65     public int getHelpResource() {
66         return R.string.help_url_dark_theme;
67     }
68 
69     @Override
getLogTag()70     protected String getLogTag() {
71         return TAG;
72     }
73 
74     @Override
getMetricsCategory()75     public int getMetricsCategory() {
76         return SettingsEnums.DARK_UI_SETTINGS;
77     }
78 
79     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
80             new BaseSearchIndexProvider();
81 }
82