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      1 /*
      2  * Copyright (C) 2013 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.example.android.apprestrictions;
     18 
     19 import android.app.Activity;
     20 import android.content.BroadcastReceiver;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.RestrictionEntry;
     24 import android.content.res.Resources;
     25 import android.os.Bundle;
     26 import android.preference.PreferenceManager;
     27 import android.util.Log;
     28 
     29 import java.util.ArrayList;
     30 
     31 public class GetRestrictionsReceiver extends BroadcastReceiver {
     32     private static final String TAG = GetRestrictionsReceiver.class.getSimpleName();
     33 
     34     // Keys for referencing app restriction settings from the platform.
     35     public static final String KEY_BOOLEAN = "boolean_key";
     36     public static final String KEY_CHOICE = "choice_key";
     37     public static final String KEY_MULTI_SELECT = "multi_key";
     38 
     39     @Override
     40     public void onReceive(final Context context, Intent intent) {
     41         final PendingResult result = goAsync();
     42 
     43         // If app restriction settings are already created, they will be included in the Bundle
     44         // as key/value pairs.
     45         final Bundle existingRestrictions =
     46                 intent.getBundleExtra(Intent.EXTRA_RESTRICTIONS_BUNDLE);
     47         Log.i(TAG, "existingRestrictions = " + existingRestrictions);
     48 
     49         new Thread() {
     50             public void run() {
     51                 createRestrictions(context, result, existingRestrictions);
     52             }
     53         }.start();
     54     }
     55 
     56     // Initializes a boolean type restriction entry.
     57     public static void populateBooleanEntry(Resources res, RestrictionEntry entry) {
     58         entry.setType(RestrictionEntry.TYPE_BOOLEAN);
     59         entry.setTitle(res.getString(R.string.boolean_entry_title));
     60     }
     61 
     62     // Initializes a single choice type restriction entry.
     63     public static void populateChoiceEntry(Resources res, RestrictionEntry reSingleChoice) {
     64         String[] choiceEntries = res.getStringArray(R.array.choice_entry_entries);
     65         String[] choiceValues = res.getStringArray(R.array.choice_entry_values);
     66         if (reSingleChoice.getSelectedString() == null) {
     67             reSingleChoice.setSelectedString(choiceValues[0]);
     68         }
     69         reSingleChoice.setTitle(res.getString(R.string.choice_entry_title));
     70         reSingleChoice.setChoiceEntries(choiceEntries);
     71         reSingleChoice.setChoiceValues(choiceValues);
     72         reSingleChoice.setType(RestrictionEntry.TYPE_CHOICE);
     73     }
     74 
     75     // Initializes a multi-select type restriction entry.
     76     public static void populateMultiEntry(Resources res, RestrictionEntry reMultiSelect) {
     77         String[] multiEntries = res.getStringArray(R.array.multi_entry_entries);
     78         String[] multiValues = res.getStringArray(R.array.multi_entry_values);
     79         if (reMultiSelect.getAllSelectedStrings() == null) {
     80             reMultiSelect.setAllSelectedStrings(new String[0]);
     81         }
     82         reMultiSelect.setTitle(res.getString(R.string.multi_entry_title));
     83         reMultiSelect.setChoiceEntries(multiEntries);
     84         reMultiSelect.setChoiceValues(multiValues);
     85         reMultiSelect.setType(RestrictionEntry.TYPE_MULTI_SELECT);
     86     }
     87 
     88     // Demonstrates the creation of standard app restriction types: boolean, single choice, and
     89     // multi-select.
     90     private ArrayList<RestrictionEntry> initRestrictions(Context context) {
     91         ArrayList<RestrictionEntry> newRestrictions = new ArrayList<RestrictionEntry>();
     92         Resources res = context.getResources();
     93 
     94         RestrictionEntry reBoolean = new RestrictionEntry(KEY_BOOLEAN, false);
     95         populateBooleanEntry(res, reBoolean);
     96         newRestrictions.add(reBoolean);
     97 
     98         RestrictionEntry reSingleChoice = new RestrictionEntry(KEY_CHOICE, (String) null);
     99         populateChoiceEntry(res, reSingleChoice);
    100         newRestrictions.add(reSingleChoice);
    101 
    102         RestrictionEntry reMultiSelect = new RestrictionEntry(KEY_MULTI_SELECT, (String[]) null);
    103         populateMultiEntry(res, reMultiSelect);
    104         newRestrictions.add(reMultiSelect);
    105 
    106         return newRestrictions;
    107     }
    108 
    109     private void createRestrictions(Context context, PendingResult result,
    110                                     Bundle existingRestrictions) {
    111         // The incoming restrictions bundle contains key/value pairs representing existing app
    112         // restrictions for this package. In order to retain existing app restrictions, you need to
    113         // construct new restriction entries and then copy in any existing values for the new keys.
    114         ArrayList<RestrictionEntry> newEntries = initRestrictions(context);
    115 
    116         // If app restrictions were not previously configured for the package, create the default
    117         // restrictions entries and return them.
    118         if (existingRestrictions == null) {
    119             Bundle extras = new Bundle();
    120             extras.putParcelableArrayList(Intent.EXTRA_RESTRICTIONS_LIST, newEntries);
    121             result.setResult(Activity.RESULT_OK, null, extras);
    122             result.finish();
    123             return;
    124         }
    125 
    126         // Retains current restriction settings by transferring existing restriction entries to
    127         // new ones.
    128         for (RestrictionEntry entry : newEntries) {
    129             final String key = entry.getKey();
    130             if (KEY_BOOLEAN.equals(key)) {
    131                 entry.setSelectedState(existingRestrictions.getBoolean(KEY_BOOLEAN));
    132             } else if (KEY_CHOICE.equals(key)) {
    133                 if (existingRestrictions.containsKey(KEY_CHOICE)) {
    134                     entry.setSelectedString(existingRestrictions.getString(KEY_CHOICE));
    135                 }
    136             } else if (KEY_MULTI_SELECT.equals(key)) {
    137                 if (existingRestrictions.containsKey(KEY_MULTI_SELECT)) {
    138                     entry.setAllSelectedStrings(existingRestrictions.getStringArray(key));
    139                 }
    140             }
    141         }
    142 
    143         final Bundle extras = new Bundle();
    144 
    145         // This path demonstrates the use of a custom app restriction activity instead of standard
    146         // types.  When a custom activity is set, the standard types will not be available under
    147         // app restriction settings.
    148         //
    149         // If your app has an existing activity for app restriction configuration, you can set it
    150         // up with the intent here.
    151         if (PreferenceManager.getDefaultSharedPreferences(context)
    152                 .getBoolean(MainActivity.CUSTOM_CONFIG_KEY, false)) {
    153             final Intent customIntent = new Intent();
    154             customIntent.setClass(context, CustomRestrictionsActivity.class);
    155             extras.putParcelable(Intent.EXTRA_RESTRICTIONS_INTENT, customIntent);
    156         }
    157 
    158         extras.putParcelableArrayList(Intent.EXTRA_RESTRICTIONS_LIST, newEntries);
    159         result.setResult(Activity.RESULT_OK, null, extras);
    160         result.finish();
    161     }
    162 }
    163