1 /** 2 * Copyright (C) 2009 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 17 package com.android.settings; 18 19 import android.app.ListFragment; 20 import android.content.ContentResolver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.database.Cursor; 24 import android.os.Bundle; 25 import android.provider.UserDictionary; 26 import android.text.TextUtils; 27 import android.view.LayoutInflater; 28 import android.view.Menu; 29 import android.view.MenuInflater; 30 import android.view.MenuItem; 31 import android.view.View; 32 import android.view.ViewGroup; 33 import android.widget.AlphabetIndexer; 34 import android.widget.ListAdapter; 35 import android.widget.ListView; 36 import android.widget.SectionIndexer; 37 import android.widget.SimpleCursorAdapter; 38 import android.widget.TextView; 39 40 import com.android.settings.inputmethod.UserDictionaryAddWordContents; 41 import com.android.settings.inputmethod.UserDictionarySettingsUtils; 42 43 import java.util.Locale; 44 45 public class UserDictionarySettings extends ListFragment { 46 private static final String TAG = "UserDictionarySettings"; 47 48 private static final String[] QUERY_PROJECTION = { 49 UserDictionary.Words._ID, UserDictionary.Words.WORD, UserDictionary.Words.SHORTCUT 50 }; 51 52 // The index of the shortcut in the above array. 53 private static final int INDEX_SHORTCUT = 2; 54 55 // Either the locale is empty (means the word is applicable to all locales) 56 // or the word equals our current locale 57 private static final String QUERY_SELECTION = 58 UserDictionary.Words.LOCALE + "=?"; 59 private static final String QUERY_SELECTION_ALL_LOCALES = 60 UserDictionary.Words.LOCALE + " is null"; 61 62 private static final String DELETE_SELECTION_WITH_SHORTCUT = UserDictionary.Words.WORD 63 + "=? AND " + UserDictionary.Words.SHORTCUT + "=?"; 64 private static final String DELETE_SELECTION_WITHOUT_SHORTCUT = UserDictionary.Words.WORD 65 + "=? AND " + UserDictionary.Words.SHORTCUT + " is null OR " 66 + UserDictionary.Words.SHORTCUT + "=''"; 67 68 private static final int OPTIONS_MENU_ADD = Menu.FIRST; 69 70 private Cursor mCursor; 71 72 protected String mLocale; 73 74 @Override 75 public View onCreateView( 76 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 77 return inflater.inflate( 78 com.android.internal.R.layout.preference_list_fragment, container, false); 79 } 80 81 @Override 82 public void onActivityCreated(Bundle savedInstanceState) { 83 super.onActivityCreated(savedInstanceState); 84 getActivity().getActionBar().setTitle(R.string.user_dict_settings_title); 85 86 final Intent intent = getActivity().getIntent(); 87 final String localeFromIntent = 88 null == intent ? null : intent.getStringExtra("locale"); 89 90 final Bundle arguments = getArguments(); 91 final String localeFromArguments = 92 null == arguments ? null : arguments.getString("locale"); 93 94 final String locale; 95 if (null != localeFromArguments) { 96 locale = localeFromArguments; 97 } else if (null != localeFromIntent) { 98 locale = localeFromIntent; 99 } else { 100 locale = null; 101 } 102 103 mLocale = locale; 104 mCursor = createCursor(locale); 105 TextView emptyView = (TextView) getView().findViewById(android.R.id.empty); 106 emptyView.setText(R.string.user_dict_settings_empty_text); 107 108 final ListView listView = getListView(); 109 listView.setAdapter(createAdapter()); 110 listView.setFastScrollEnabled(true); 111 listView.setEmptyView(emptyView); 112 113 setHasOptionsMenu(true); 114 // Show the language as a subtitle of the action bar 115 getActivity().getActionBar().setSubtitle( 116 UserDictionarySettingsUtils.getLocaleDisplayName(getActivity(), mLocale)); 117 } 118 119 private Cursor createCursor(final String locale) { 120 // Locale can be any of: 121 // - The string representation of a locale, as returned by Locale#toString() 122 // - The empty string. This means we want a cursor returning words valid for all locales. 123 // - null. This means we want a cursor for the current locale, whatever this is. 124 // Note that this contrasts with the data inside the database, where NULL means "all 125 // locales" and there should never be an empty string. The confusion is called by the 126 // historical use of null for "all locales". 127 // TODO: it should be easy to make this more readable by making the special values 128 // human-readable, like "all_locales" and "current_locales" strings, provided they 129 // can be guaranteed not to match locales that may exist. 130 if ("".equals(locale)) { 131 // Case-insensitive sort 132 return getActivity().managedQuery(UserDictionary.Words.CONTENT_URI, QUERY_PROJECTION, 133 QUERY_SELECTION_ALL_LOCALES, null, 134 "UPPER(" + UserDictionary.Words.WORD + ")"); 135 } else { 136 final String queryLocale = null != locale ? locale : Locale.getDefault().toString(); 137 return getActivity().managedQuery(UserDictionary.Words.CONTENT_URI, QUERY_PROJECTION, 138 QUERY_SELECTION, new String[] { queryLocale }, 139 "UPPER(" + UserDictionary.Words.WORD + ")"); 140 } 141 } 142 143 private ListAdapter createAdapter() { 144 return new MyAdapter(getActivity(), 145 R.layout.user_dictionary_item, mCursor, 146 new String[] { UserDictionary.Words.WORD, UserDictionary.Words.SHORTCUT }, 147 new int[] { android.R.id.text1, android.R.id.text2 }, this); 148 } 149 150 @Override 151 public void onListItemClick(ListView l, View v, int position, long id) { 152 final String word = getWord(position); 153 final String shortcut = getShortcut(position); 154 if (word != null) { 155 showAddOrEditDialog(word, shortcut); 156 } 157 } 158 159 @Override 160 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 161 MenuItem actionItem = 162 menu.add(0, OPTIONS_MENU_ADD, 0, R.string.user_dict_settings_add_menu_title) 163 .setIcon(R.drawable.ic_menu_add_white); 164 actionItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | 165 MenuItem.SHOW_AS_ACTION_WITH_TEXT); 166 } 167 168 @Override 169 public boolean onOptionsItemSelected(MenuItem item) { 170 if (item.getItemId() == OPTIONS_MENU_ADD) { 171 showAddOrEditDialog(null, null); 172 return true; 173 } 174 return false; 175 } 176 177 /** 178 * Add or edit a word. If editingWord is null, it's an add; otherwise, it's an edit. 179 * @param editingWord the word to edit, or null if it's an add. 180 * @param editingShortcut the shortcut for this entry, or null if none. 181 */ 182 private void showAddOrEditDialog(final String editingWord, final String editingShortcut) { 183 final Bundle args = new Bundle(); 184 args.putInt(UserDictionaryAddWordContents.EXTRA_MODE, null == editingWord 185 ? UserDictionaryAddWordContents.MODE_INSERT 186 : UserDictionaryAddWordContents.MODE_EDIT); 187 args.putString(UserDictionaryAddWordContents.EXTRA_WORD, editingWord); 188 args.putString(UserDictionaryAddWordContents.EXTRA_SHORTCUT, editingShortcut); 189 args.putString(UserDictionaryAddWordContents.EXTRA_LOCALE, mLocale); 190 SettingsActivity sa = (SettingsActivity) getActivity(); 191 sa.startPreferencePanel( 192 com.android.settings.inputmethod.UserDictionaryAddWordFragment.class.getName(), 193 args, R.string.user_dict_settings_add_dialog_title, null, null, 0); 194 } 195 196 private String getWord(final int position) { 197 if (null == mCursor) return null; 198 mCursor.moveToPosition(position); 199 // Handle a possible race-condition 200 if (mCursor.isAfterLast()) return null; 201 202 return mCursor.getString( 203 mCursor.getColumnIndexOrThrow(UserDictionary.Words.WORD)); 204 } 205 206 private String getShortcut(final int position) { 207 if (null == mCursor) return null; 208 mCursor.moveToPosition(position); 209 // Handle a possible race-condition 210 if (mCursor.isAfterLast()) return null; 211 212 return mCursor.getString( 213 mCursor.getColumnIndexOrThrow(UserDictionary.Words.SHORTCUT)); 214 } 215 216 public static void deleteWord(final String word, final String shortcut, 217 final ContentResolver resolver) { 218 if (TextUtils.isEmpty(shortcut)) { 219 resolver.delete( 220 UserDictionary.Words.CONTENT_URI, DELETE_SELECTION_WITHOUT_SHORTCUT, 221 new String[] { word }); 222 } else { 223 resolver.delete( 224 UserDictionary.Words.CONTENT_URI, DELETE_SELECTION_WITH_SHORTCUT, 225 new String[] { word, shortcut }); 226 } 227 } 228 229 private static class MyAdapter extends SimpleCursorAdapter implements SectionIndexer { 230 231 private AlphabetIndexer mIndexer; 232 233 private final ViewBinder mViewBinder = new ViewBinder() { 234 235 @Override 236 public boolean setViewValue(View v, Cursor c, int columnIndex) { 237 if (columnIndex == INDEX_SHORTCUT) { 238 final String shortcut = c.getString(INDEX_SHORTCUT); 239 if (TextUtils.isEmpty(shortcut)) { 240 v.setVisibility(View.GONE); 241 } else { 242 ((TextView)v).setText(shortcut); 243 v.setVisibility(View.VISIBLE); 244 } 245 v.invalidate(); 246 return true; 247 } 248 249 return false; 250 } 251 }; 252 253 public MyAdapter(Context context, int layout, Cursor c, String[] from, int[] to, 254 UserDictionarySettings settings) { 255 super(context, layout, c, from, to); 256 257 if (null != c) { 258 final String alphabet = context.getString( 259 com.android.internal.R.string.fast_scroll_alphabet); 260 final int wordColIndex = c.getColumnIndexOrThrow(UserDictionary.Words.WORD); 261 mIndexer = new AlphabetIndexer(c, wordColIndex, alphabet); 262 } 263 setViewBinder(mViewBinder); 264 } 265 266 @Override 267 public int getPositionForSection(int section) { 268 return null == mIndexer ? 0 : mIndexer.getPositionForSection(section); 269 } 270 271 @Override 272 public int getSectionForPosition(int position) { 273 return null == mIndexer ? 0 : mIndexer.getSectionForPosition(position); 274 } 275 276 @Override 277 public Object[] getSections() { 278 return null == mIndexer ? null : mIndexer.getSections(); 279 } 280 } 281 } 282
