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      1 /*
      2  * Copyright (C) 2010 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.contacts.socialwidget;
     18 
     19 import android.content.Context;
     20 import android.content.SharedPreferences;
     21 import android.content.SharedPreferences.Editor;
     22 import android.net.Uri;
     23 import android.preference.PreferenceManager;
     24 import android.util.Log;
     25 
     26 public class SocialWidgetSettings {
     27     private static final String TAG = "SocialWidgetSettings";
     28 
     29     // To migrate from earlier versions...
     30     private static final String LEGACY_PREFS_NAME = "WidgetSettings";
     31 
     32     // Prefix to use for all preferences used by this class.
     33     private static final String PREFERENCES_PREFIX = "SocialWidgetSettings_";
     34 
     35     private static final String CONTACT_URI_PREFIX = "CONTACT_URI_";
     36 
     37     private static final String KEY_MIGRATED = PREFERENCES_PREFIX + "settings_migrated";
     38 
     39     private static final SocialWidgetSettings sInstance = new SocialWidgetSettings();
     40 
     41     public static SocialWidgetSettings getInstance() {
     42         return sInstance;
     43     }
     44 
     45     private final String getPreferenceKey(int widgetId) {
     46         return PREFERENCES_PREFIX + CONTACT_URI_PREFIX + Integer.toString(widgetId);
     47     }
     48 
     49     public void remove(Context context, int[] widgetIds) {
     50         final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
     51         final Editor editor = settings.edit();
     52         for (int widgetId : widgetIds) {
     53             if (Log.isLoggable(TAG, Log.DEBUG)) {
     54                 Log.d(TAG, "remove(" + widgetId + ")");
     55             }
     56             editor.remove(getPreferenceKey(widgetId));
     57         }
     58         editor.apply();
     59     }
     60 
     61     public Uri getContactUri(Context context, int widgetId) {
     62         final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
     63 
     64         ensureMigrated(context, settings);
     65 
     66         final String resultString = settings.getString(getPreferenceKey(widgetId), null);
     67         final Uri result = resultString == null ? null : Uri.parse(resultString);
     68         if (Log.isLoggable(TAG, Log.DEBUG)) {
     69             Log.d(TAG, "getContactUri(" + widgetId + ") --> " + result);
     70         }
     71         return result;
     72     }
     73 
     74     public void setContactUri(Context context, int widgetId, Uri contactLookupUri) {
     75         if (Log.isLoggable(TAG, Log.DEBUG)) {
     76             Log.d(TAG, "setContactUri(" + widgetId + ", " + contactLookupUri + ")");
     77         }
     78         final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
     79         final Editor editor = settings.edit();
     80         if (contactLookupUri == null) {
     81             editor.remove(getPreferenceKey(widgetId));
     82         } else {
     83             editor.putString(getPreferenceKey(widgetId), contactLookupUri.toString());
     84         }
     85         editor.apply();
     86     }
     87 
     88     private void ensureMigrated(Context context, SharedPreferences settings) {
     89         if (settings.getBoolean(KEY_MIGRATED, false)) {
     90             return; // Migrated already
     91         }
     92 
     93         Log.i(TAG, "Migrating widget settings...");
     94 
     95         // Old preferences only had the "CONTACT_URI_" prefix.
     96         // New preferences have the "SocialWidgetSettings_CONTACT_URI_" prefix.
     97         // So just copy all the entries with adding "SocialWidgetSettings_" to their key names.
     98 
     99         final SharedPreferences.Editor editor = settings.edit();
    100 
    101         final SharedPreferences legacySettings =
    102             context.getSharedPreferences(LEGACY_PREFS_NAME, Context.MODE_PRIVATE);
    103         for (String key : legacySettings.getAll().keySet()) {
    104             final String value = legacySettings.getString(key, null);
    105             if (value == null) continue; // Just in case.
    106 
    107             Log.i(TAG, "Found: " + key + ": " + value);
    108 
    109             editor.putString(PREFERENCES_PREFIX + key, value);
    110         }
    111 
    112         editor.apply();
    113         settings.edit().putBoolean(KEY_MIGRATED, true).apply();
    114     }
    115 }
    116