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      1 /*
      2  * Copyright (C) 2018 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.display;
     18 
     19 import android.content.Context;
     20 import android.support.v7.preference.DropDownPreference;
     21 import android.support.v7.preference.Preference;
     22 import android.support.v7.preference.PreferenceScreen;
     23 import com.android.internal.app.ColorDisplayController;
     24 import com.android.settings.R;
     25 import com.android.settings.core.BasePreferenceController;
     26 
     27 public class NightDisplayAutoModePreferenceController extends BasePreferenceController
     28         implements Preference.OnPreferenceChangeListener {
     29 
     30     private DropDownPreference mPreference;
     31     private ColorDisplayController mController;
     32 
     33     public NightDisplayAutoModePreferenceController(Context context, String key) {
     34         super(context, key);
     35         mController = new ColorDisplayController(context);
     36     }
     37 
     38     @Override
     39     public int getAvailabilityStatus() {
     40         return ColorDisplayController.isAvailable(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     41     }
     42 
     43     @Override
     44     public void displayPreference(PreferenceScreen screen) {
     45         super.displayPreference(screen);
     46 
     47         mPreference = (DropDownPreference) screen.findPreference(getPreferenceKey());
     48 
     49         mPreference.setEntries(new CharSequence[]{
     50                 mContext.getString(R.string.night_display_auto_mode_never),
     51                 mContext.getString(R.string.night_display_auto_mode_custom),
     52                 mContext.getString(R.string.night_display_auto_mode_twilight)
     53         });
     54         mPreference.setEntryValues(new CharSequence[]{
     55                 String.valueOf(ColorDisplayController.AUTO_MODE_DISABLED),
     56                 String.valueOf(ColorDisplayController.AUTO_MODE_CUSTOM),
     57                 String.valueOf(ColorDisplayController.AUTO_MODE_TWILIGHT)
     58         });
     59     }
     60 
     61     @Override
     62     public final void updateState(Preference preference) {
     63         mPreference.setValue(String.valueOf(mController.getAutoMode()));
     64     }
     65 
     66     @Override
     67     public final boolean onPreferenceChange(Preference preference, Object newValue) {
     68         return mController.setAutoMode(Integer.parseInt((String) newValue));
     69     }
     70 }
     71