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      1 /*
      2  * Copyright (C) 2016 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.egg.neko;
     16 
     17 import android.content.Context;
     18 import android.content.SharedPreferences;
     19 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
     20 
     21 import java.util.ArrayList;
     22 import java.util.List;
     23 import java.util.Map;
     24 
     25 public class PrefState implements OnSharedPreferenceChangeListener {
     26 
     27     private static final String FILE_NAME = "mPrefs";
     28 
     29     private static final String FOOD_STATE = "food";
     30 
     31     private static final String CAT_KEY_PREFIX = "cat:";
     32 
     33     private final Context mContext;
     34     private final SharedPreferences mPrefs;
     35     private PrefsListener mListener;
     36 
     37     public PrefState(Context context) {
     38         mContext = context;
     39         mPrefs = mContext.getSharedPreferences(FILE_NAME, 0);
     40     }
     41 
     42     // Can also be used for renaming.
     43     public void addCat(Cat cat) {
     44         mPrefs.edit()
     45               .putString(CAT_KEY_PREFIX + String.valueOf(cat.getSeed()), cat.getName())
     46               .commit();
     47     }
     48 
     49     public void removeCat(Cat cat) {
     50         mPrefs.edit()
     51                 .remove(CAT_KEY_PREFIX + String.valueOf(cat.getSeed()))
     52                 .commit();
     53     }
     54 
     55     public List<Cat> getCats() {
     56         ArrayList<Cat> cats = new ArrayList<>();
     57         Map<String, ?> map = mPrefs.getAll();
     58         for (String key : map.keySet()) {
     59             if (key.startsWith(CAT_KEY_PREFIX)) {
     60                 long seed = Long.parseLong(key.substring(CAT_KEY_PREFIX.length()));
     61                 Cat cat = new Cat(mContext, seed);
     62                 cat.setName(String.valueOf(map.get(key)));
     63                 cats.add(cat);
     64             }
     65         }
     66         return cats;
     67     }
     68 
     69     public int getFoodState() {
     70         return mPrefs.getInt(FOOD_STATE, 0);
     71     }
     72 
     73     public void setFoodState(int foodState) {
     74         mPrefs.edit().putInt(FOOD_STATE, foodState).commit();
     75     }
     76 
     77     public void setListener(PrefsListener listener) {
     78         mListener = listener;
     79         if (mListener != null) {
     80             mPrefs.registerOnSharedPreferenceChangeListener(this);
     81         } else {
     82             mPrefs.unregisterOnSharedPreferenceChangeListener(this);
     83         }
     84     }
     85 
     86     @Override
     87     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
     88         mListener.onPrefsChanged();
     89     }
     90 
     91     public interface PrefsListener {
     92         void onPrefsChanged();
     93     }
     94 }
     95