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.language; 18 19 import android.app.Fragment; 20 import android.content.Context; 21 import android.os.Bundle; 22 import android.support.v7.preference.Preference; 23 24 import com.android.settings.core.PreferenceControllerMixin; 25 import com.android.settings.inputmethod.UserDictionaryList; 26 import com.android.settings.inputmethod.UserDictionarySettings; 27 import com.android.settingslib.core.AbstractPreferenceController; 28 29 import java.util.TreeSet; 30 31 public class UserDictionaryPreferenceController extends AbstractPreferenceController 32 implements PreferenceControllerMixin { 33 34 private static final String KEY_USER_DICTIONARY_SETTINGS = "key_user_dictionary_settings"; 35 UserDictionaryPreferenceController(Context context)36 public UserDictionaryPreferenceController(Context context) { 37 super(context); 38 } 39 40 @Override isAvailable()41 public boolean isAvailable() { 42 return true; 43 } 44 45 @Override getPreferenceKey()46 public String getPreferenceKey() { 47 return KEY_USER_DICTIONARY_SETTINGS; 48 } 49 50 @Override updateState(Preference preference)51 public void updateState(Preference preference) { 52 if (!isAvailable() || preference == null) { 53 return; 54 } 55 final TreeSet<String> localeSet = getDictionaryLocales(); 56 final Bundle extras = preference.getExtras(); 57 final Class<? extends Fragment> targetFragment; 58 if (localeSet.size() <= 1) { 59 if (!localeSet.isEmpty()) { 60 // If the size of localeList is 0, we don't set the locale 61 // parameter in the extras. This will be interpreted by the 62 // UserDictionarySettings class as meaning 63 // "the current locale". Note that with the current code for 64 // UserDictionaryList#getUserDictionaryLocalesSet() 65 // the locale list always has at least one element, since it 66 // always includes the current locale explicitly. 67 // @see UserDictionaryList.getUserDictionaryLocalesSet(). 68 extras.putString("locale", localeSet.first()); 69 } 70 targetFragment = UserDictionarySettings.class; 71 } else { 72 targetFragment = UserDictionaryList.class; 73 } 74 preference.setFragment(targetFragment.getCanonicalName()); 75 } 76 getDictionaryLocales()77 protected TreeSet<String> getDictionaryLocales() { 78 return UserDictionaryList.getUserDictionaryLocalesSet(mContext); 79 } 80 } 81