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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");
      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.inputmethod;
     18 
     19 import android.content.Context;
     20 import android.support.v7.preference.Preference;
     21 import android.support.v7.preference.PreferenceScreen;
     22 import android.view.textservice.SpellCheckerInfo;
     23 import android.view.textservice.TextServicesManager;
     24 
     25 import com.android.settings.R;
     26 import com.android.settings.core.PreferenceControllerMixin;
     27 import com.android.settingslib.core.AbstractPreferenceController;
     28 import com.android.settingslib.inputmethod.InputMethodAndSubtypeUtil;
     29 
     30 public class SpellCheckerPreferenceController extends AbstractPreferenceController
     31         implements PreferenceControllerMixin {
     32 
     33     public static final String KEY_SPELL_CHECKERS = "spellcheckers_settings";
     34 
     35     private final TextServicesManager mTextServicesManager;
     36 
     37     public SpellCheckerPreferenceController(Context context) {
     38         super(context);
     39         mTextServicesManager = (TextServicesManager) context.getSystemService(
     40                 Context.TEXT_SERVICES_MANAGER_SERVICE);
     41     }
     42 
     43     @Override
     44     public void displayPreference(PreferenceScreen screen) {
     45         super.displayPreference(screen);
     46         final Preference preference = screen.findPreference(KEY_SPELL_CHECKERS);
     47         if (preference != null) {
     48             InputMethodAndSubtypeUtil.removeUnnecessaryNonPersistentPreference(preference);
     49         }
     50     }
     51 
     52     @Override
     53     public boolean isAvailable() {
     54         return mContext.getResources().getBoolean(R.bool.config_show_spellcheckers_settings);
     55     }
     56 
     57     @Override
     58     public String getPreferenceKey() {
     59         return KEY_SPELL_CHECKERS;
     60     }
     61 
     62     @Override
     63     public void updateState(Preference preference) {
     64         if (preference == null) {
     65             return;
     66         }
     67         if (!mTextServicesManager.isSpellCheckerEnabled()) {
     68             preference.setSummary(R.string.switch_off_text);
     69         } else {
     70             final SpellCheckerInfo sci = mTextServicesManager.getCurrentSpellChecker();
     71             if (sci != null) {
     72                 preference.setSummary(sci.loadLabel(mContext.getPackageManager()));
     73             } else {
     74                 preference.setSummary(R.string.spell_checker_not_selected);
     75             }
     76         }
     77     }
     78 }
     79