1 /*
2  * Copyright (C) 2017 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.dream;
18 
19 import android.app.settings.SettingsEnums;
20 import android.content.Context;
21 import android.graphics.drawable.Drawable;
22 
23 import com.android.settings.R;
24 import com.android.settings.widget.RadioButtonPickerFragment;
25 import com.android.settingslib.dream.DreamBackend;
26 import com.android.settingslib.widget.CandidateInfo;
27 
28 import java.util.ArrayList;
29 import java.util.List;
30 
31 public class WhenToDreamPicker extends RadioButtonPickerFragment {
32 
33     private static final String TAG = "WhenToDreamPicker";
34     private DreamBackend mBackend;
35     private boolean mDreamsSupportedOnBattery;
36 
37     @Override
onAttach(Context context)38     public void onAttach(Context context) {
39         super.onAttach(context);
40 
41         mBackend = DreamBackend.getInstance(context);
42         mDreamsSupportedOnBattery = getResources().getBoolean(
43                 com.android.internal.R.bool.config_dreamsEnabledOnBattery);
44     }
45 
46     @Override
getPreferenceScreenResId()47     protected int getPreferenceScreenResId() {
48         return R.xml.when_to_dream_settings;
49     }
50 
51     @Override
getMetricsCategory()52     public int getMetricsCategory() {
53         return SettingsEnums.SETTINGS_WHEN_TO_DREAM;
54     }
55 
56     @Override
getCandidates()57     protected List<? extends CandidateInfo> getCandidates() {
58         final String[] entries = entries();
59         final String[] values = keys();
60         final List<WhenToDreamCandidateInfo> candidates = new ArrayList<>();
61 
62         if (entries == null || entries.length <= 0) return null;
63         if (values == null || values.length != entries.length) {
64             throw new IllegalArgumentException("Entries and values must be of the same length.");
65         }
66 
67         for (int i = 0; i < entries.length; i++) {
68             candidates.add(new WhenToDreamCandidateInfo(entries[i], values[i]));
69         }
70 
71         return candidates;
72     }
73 
entries()74     private String[] entries() {
75         if (mDreamsSupportedOnBattery) {
76             return getResources().getStringArray(R.array.when_to_start_screensaver_entries);
77         }
78         return getResources().getStringArray(R.array.when_to_start_screensaver_entries_no_battery);
79     }
80 
keys()81     private String[] keys() {
82         if (mDreamsSupportedOnBattery) {
83             return getResources().getStringArray(R.array.when_to_start_screensaver_values);
84         }
85         return getResources().getStringArray(R.array.when_to_start_screensaver_values_no_battery);
86     }
87 
88     @Override
getDefaultKey()89     protected String getDefaultKey() {
90         return DreamSettings.getKeyFromSetting(mBackend.getWhenToDreamSetting());
91     }
92 
93     @Override
setDefaultKey(String key)94     protected boolean setDefaultKey(String key) {
95         mBackend.setWhenToDream(DreamSettings.getSettingFromPrefKey(key));
96         return true;
97     }
98 
99     @Override
onSelectionPerformed(boolean success)100     protected void onSelectionPerformed(boolean success) {
101         super.onSelectionPerformed(success);
102 
103         getActivity().finish();
104     }
105 
106     private final class WhenToDreamCandidateInfo extends CandidateInfo {
107         private final String name;
108         private final String key;
109 
WhenToDreamCandidateInfo(String title, String value)110         WhenToDreamCandidateInfo(String title, String value) {
111             super(true);
112 
113             name = title;
114             key = value;
115         }
116 
117         @Override
loadLabel()118         public CharSequence loadLabel() {
119             return name;
120         }
121 
122         @Override
loadIcon()123         public Drawable loadIcon() {
124             return null;
125         }
126 
127         @Override
getKey()128         public String getKey() {
129             return key;
130         }
131     }
132 }
133