Home | History | Annotate | Download | only in accessibility 
      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.android.settings.accessibility;
     18 
     19 import android.content.ComponentName;
     20 import android.content.Context;
     21 import android.content.res.Configuration;
     22 import android.content.res.Resources;
     23 import android.provider.Settings;
     24 import android.text.TextUtils.SimpleStringSplitter;
     25 
     26 import java.util.Collections;
     27 import java.util.HashSet;
     28 import java.util.Locale;
     29 import java.util.Set;
     30 
     31 /**
     32  * Utility methods used within accessibility settings.
     33  */
     34 class AccessibilityUtils {
     35     /**
     36      * @return the set of enabled accessibility services. If there are not services
     37      * it returned the unmodifiable {@link Collections#emptySet()}.
     38      */
     39     static Set<ComponentName> getEnabledServicesFromSettings(Context context) {
     40         final String enabledServicesSetting = Settings.Secure.getString(
     41                 context.getContentResolver(), Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
     42         if (enabledServicesSetting == null) {
     43             return Collections.emptySet();
     44         }
     45 
     46         final Set<ComponentName> enabledServices = new HashSet<ComponentName>();
     47         final SimpleStringSplitter colonSplitter = AccessibilitySettings.sStringColonSplitter;
     48         colonSplitter.setString(enabledServicesSetting);
     49 
     50         while (colonSplitter.hasNext()) {
     51             final String componentNameString = colonSplitter.next();
     52             final ComponentName enabledService = ComponentName.unflattenFromString(
     53                     componentNameString);
     54             if (enabledService != null) {
     55                 enabledServices.add(enabledService);
     56             }
     57         }
     58 
     59         return enabledServices;
     60     }
     61 
     62     /**
     63      * @return a localized version of the text resource specified by resId
     64      */
     65     static CharSequence getTextForLocale(Context context, Locale locale, int resId) {
     66         final Resources res = context.getResources();
     67         final Configuration config = res.getConfiguration();
     68         final Locale prevLocale = config.locale;
     69         try {
     70             config.locale = locale;
     71             res.updateConfiguration(config, null);
     72             return res.getText(resId);
     73         } finally {
     74             config.locale = prevLocale;
     75             res.updateConfiguration(config, null);
     76         }
     77     }
     78 }
     79