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 17package com.android.inputmethod.latin.userdictionary; 18 19import android.app.Activity; 20import android.content.Context; 21import android.content.Intent; 22import android.database.Cursor; 23import android.os.Bundle; 24import android.preference.Preference; 25import android.preference.PreferenceFragment; 26import android.preference.PreferenceGroup; 27import android.provider.UserDictionary; 28import android.text.TextUtils; 29import android.view.inputmethod.InputMethodInfo; 30import android.view.inputmethod.InputMethodManager; 31import android.view.inputmethod.InputMethodSubtype; 32 33import com.android.inputmethod.latin.R; 34import com.android.inputmethod.latin.common.LocaleUtils; 35 36import java.util.List; 37import java.util.Locale; 38import java.util.TreeSet; 39 40import javax.annotation.Nullable; 41 42// Caveat: This class is basically taken from 43// packages/apps/Settings/src/com/android/settings/inputmethod/UserDictionaryList.java 44// in order to deal with some devices that have issues with the user dictionary handling 45 46public class UserDictionaryList extends PreferenceFragment { 47 48 public static final String USER_DICTIONARY_SETTINGS_INTENT_ACTION = 49 "android.settings.USER_DICTIONARY_SETTINGS"; 50 51 @Override 52 public void onCreate(final Bundle icicle) { 53 super.onCreate(icicle); 54 setPreferenceScreen(getPreferenceManager().createPreferenceScreen(getActivity())); 55 } 56 57 public static TreeSet<String> getUserDictionaryLocalesSet(final Activity activity) { 58 final Cursor cursor = activity.getContentResolver().query(UserDictionary.Words.CONTENT_URI, 59 new String[] { UserDictionary.Words.LOCALE }, 60 null, null, null); 61 final TreeSet<String> localeSet = new TreeSet<>(); 62 if (null == cursor) { 63 // The user dictionary service is not present or disabled. Return null. 64 return null; 65 } 66 try { 67 if (cursor.moveToFirst()) { 68 final int columnIndex = cursor.getColumnIndex(UserDictionary.Words.LOCALE); 69 do { 70 final String locale = cursor.getString(columnIndex); 71 localeSet.add(null != locale ? locale : ""); 72 } while (cursor.moveToNext()); 73 } 74 } finally { 75 cursor.close(); 76 } 77 if (!UserDictionarySettings.IS_SHORTCUT_API_SUPPORTED) { 78 // For ICS, we need to show "For all languages" in case that the keyboard locale 79 // is different from the system locale 80 localeSet.add(""); 81 } 82 83 final InputMethodManager imm = 84 (InputMethodManager)activity.getSystemService(Context.INPUT_METHOD_SERVICE); 85 final List<InputMethodInfo> imis = imm.getEnabledInputMethodList(); 86 for (final InputMethodInfo imi : imis) { 87 final List<InputMethodSubtype> subtypes = 88 imm.getEnabledInputMethodSubtypeList( 89 imi, true /* allowsImplicitlySelectedSubtypes */); 90 for (InputMethodSubtype subtype : subtypes) { 91 final String locale = subtype.getLocale(); 92 if (!TextUtils.isEmpty(locale)) { 93 localeSet.add(locale); 94 } 95 } 96 } 97 98 // We come here after we have collected locales from existing user dictionary entries and 99 // enabled subtypes. If we already have the locale-without-country version of the system 100 // locale, we don't add the system locale to avoid confusion even though it's technically 101 // correct to add it. 102 if (!localeSet.contains(Locale.getDefault().getLanguage().toString())) { 103 localeSet.add(Locale.getDefault().toString()); 104 } 105 106 return localeSet; 107 } 108 109 /** 110 * Creates the entries that allow the user to go into the user dictionary for each locale. 111 * @param userDictGroup The group to put the settings in. 112 */ 113 protected void createUserDictSettings(final PreferenceGroup userDictGroup) { 114 final Activity activity = getActivity(); 115 userDictGroup.removeAll(); 116 final TreeSet<String> localeSet = 117 UserDictionaryList.getUserDictionaryLocalesSet(activity); 118 119 if (localeSet.size() > 1) { 120 // Have an "All languages" entry in the languages list if there are two or more active 121 // languages 122 localeSet.add(""); 123 } 124 125 if (localeSet.isEmpty()) { 126 userDictGroup.addPreference(createUserDictionaryPreference(null)); 127 } else { 128 for (String locale : localeSet) { 129 userDictGroup.addPreference(createUserDictionaryPreference(locale)); 130 } 131 } 132 } 133 134 /** 135 * Create a single User Dictionary Preference object, with its parameters set. 136 * @param localeString The locale for which this user dictionary is for. 137 * @return The corresponding preference. 138 */ 139 protected Preference createUserDictionaryPreference(@Nullable final String localeString) { 140 final Preference newPref = new Preference(getActivity()); 141 final Intent intent = new Intent(USER_DICTIONARY_SETTINGS_INTENT_ACTION); 142 if (null == localeString) { 143 newPref.setTitle(Locale.getDefault().getDisplayName()); 144 } else { 145 if (localeString.isEmpty()) { 146 newPref.setTitle(getString(R.string.user_dict_settings_all_languages)); 147 } else { 148 newPref.setTitle( 149 LocaleUtils.constructLocaleFromString(localeString).getDisplayName()); 150 } 151 intent.putExtra("locale", localeString); 152 newPref.getExtras().putString("locale", localeString); 153 } 154 newPref.setIntent(intent); 155 newPref.setFragment(UserDictionarySettings.class.getName()); 156 return newPref; 157 } 158 159 @Override 160 public void onResume() { 161 super.onResume(); 162 createUserDictSettings(getPreferenceScreen()); 163 } 164} 165 166