UserDictionarySettings.java revision afc4ab2ffbb8327ddce9907961295a32cbf49d0f 
1/**
2 * Copyright (C) 2007 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
17package com.android.settings;
18
19import android.app.AlertDialog;
20import android.app.Dialog;
21import android.app.ListActivity;
22import android.content.Context;
23import android.content.DialogInterface;
24import android.database.Cursor;
25import android.os.Bundle;
26import android.provider.UserDictionary;
27import android.text.InputType;
28import android.view.ContextMenu;
29import android.view.Menu;
30import android.view.MenuItem;
31import android.view.View;
32import android.view.ContextMenu.ContextMenuInfo;
33import android.widget.AlphabetIndexer;
34import android.widget.EditText;
35import android.widget.ListAdapter;
36import android.widget.ListView;
37import android.widget.SectionIndexer;
38import android.widget.SimpleCursorAdapter;
39import android.widget.TextView;
40import android.widget.AdapterView.AdapterContextMenuInfo;
41
42import java.util.Locale;
43
44public class UserDictionarySettings extends ListActivity {
45
46    private static final String INSTANCE_KEY_DIALOG_EDITING_WORD = "DIALOG_EDITING_WORD";
47    private static final String INSTANCE_KEY_ADDED_WORD = "DIALOG_ADDED_WORD";
48
49    private static final String[] QUERY_PROJECTION = {
50        UserDictionary.Words._ID, UserDictionary.Words.WORD
51    };
52
53    // Either the locale is empty (means the word is applicable to all locales)
54    // or the word equals our current locale
55    private static final String QUERY_SELECTION = UserDictionary.Words.LOCALE + "=? OR "
56            + UserDictionary.Words.LOCALE + " is null";
57
58    private static final String DELETE_SELECTION = UserDictionary.Words.WORD + "=?";
59
60    private static final String EXTRA_WORD = "word";
61
62    private static final int CONTEXT_MENU_EDIT = Menu.FIRST;
63    private static final int CONTEXT_MENU_DELETE = Menu.FIRST + 1;
64
65    private static final int OPTIONS_MENU_ADD = Menu.FIRST;
66
67    private static final int DIALOG_ADD_OR_EDIT = 0;
68
69    /** The word being edited in the dialog (null means the user is adding a word). */
70    private String mDialogEditingWord;
71
72    private Cursor mCursor;
73
74    private boolean mAddedWordAlready;
75    private boolean mAutoReturn;
76
77    @Override
78    protected void onCreate(Bundle savedInstanceState) {
79        super.onCreate(savedInstanceState);
80
81        setContentView(R.layout.list_content_with_empty_view);
82
83        mCursor = createCursor();
84        setListAdapter(createAdapter());
85
86        TextView emptyView = (TextView) findViewById(R.id.empty);
87        emptyView.setText(R.string.user_dict_settings_empty_text);
88
89        ListView listView = getListView();
90        listView.setFastScrollEnabled(true);
91        listView.setEmptyView(emptyView);
92
93        registerForContextMenu(listView);
94    }
95
96    @Override
97    protected void onResume() {
98        super.onResume();
99        if (!mAddedWordAlready
100                && getIntent().getAction().equals("com.android.settings.USER_DICTIONARY_INSERT")) {
101            String word = getIntent().getStringExtra(EXTRA_WORD);
102            mAutoReturn = true;
103            if (word != null) {
104                showAddOrEditDialog(word);
105            }
106        }
107    }
108    @Override
109    protected void onRestoreInstanceState(Bundle state) {
110        super.onRestoreInstanceState(state);
111        mDialogEditingWord = state.getString(INSTANCE_KEY_DIALOG_EDITING_WORD);
112        mAddedWordAlready = state.getBoolean(INSTANCE_KEY_ADDED_WORD, false);
113    }
114
115    @Override
116    protected void onSaveInstanceState(Bundle outState) {
117        super.onSaveInstanceState(outState);
118        outState.putString(INSTANCE_KEY_DIALOG_EDITING_WORD, mDialogEditingWord);
119        outState.putBoolean(INSTANCE_KEY_ADDED_WORD, mAddedWordAlready);
120    }
121
122    private Cursor createCursor() {
123        String currentLocale = Locale.getDefault().toString();
124        // Case-insensitive sort
125        return managedQuery(UserDictionary.Words.CONTENT_URI, QUERY_PROJECTION,
126                QUERY_SELECTION, new String[] { currentLocale },
127                "UPPER(" + UserDictionary.Words.WORD + ")");
128    }
129
130    private ListAdapter createAdapter() {
131        return new MyAdapter(this,
132                android.R.layout.simple_list_item_1, mCursor,
133                new String[] { UserDictionary.Words.WORD },
134                new int[] { android.R.id.text1 });
135    }
136
137    @Override
138    protected void onListItemClick(ListView l, View v, int position, long id) {
139        showAddOrEditDialog(getWord(position));
140    }
141
142    @Override
143    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
144        if (!(menuInfo instanceof AdapterContextMenuInfo)) return;
145
146        AdapterContextMenuInfo adapterMenuInfo = (AdapterContextMenuInfo) menuInfo;
147        menu.setHeaderTitle(getWord(adapterMenuInfo.position));
148        menu.add(0, CONTEXT_MENU_EDIT, 0, R.string.user_dict_settings_context_menu_edit_title);
149        menu.add(0, CONTEXT_MENU_DELETE, 0, R.string.user_dict_settings_context_menu_delete_title);
150    }
151
152    @Override
153    public boolean onContextItemSelected(MenuItem item) {
154        ContextMenuInfo menuInfo = item.getMenuInfo();
155        if (!(menuInfo instanceof AdapterContextMenuInfo)) return false;
156
157        AdapterContextMenuInfo adapterMenuInfo = (AdapterContextMenuInfo) menuInfo;
158        String word = getWord(adapterMenuInfo.position);
159
160        switch (item.getItemId()) {
161            case CONTEXT_MENU_DELETE:
162                deleteWord(word);
163                return true;
164
165            case CONTEXT_MENU_EDIT:
166                showAddOrEditDialog(word);
167                return true;
168        }
169
170        return false;
171    }
172
173    @Override
174    public boolean onCreateOptionsMenu(Menu menu) {
175        menu.add(0, OPTIONS_MENU_ADD, 0, R.string.user_dict_settings_add_menu_title)
176                .setIcon(R.drawable.ic_menu_add);
177        return true;
178    }
179
180    @Override
181    public boolean onOptionsItemSelected(MenuItem item) {
182        showAddOrEditDialog(null);
183        return true;
184    }
185
186    private void showAddOrEditDialog(String editingWord) {
187        mDialogEditingWord = editingWord;
188        showDialog(DIALOG_ADD_OR_EDIT);
189    }
190
191    private String getWord(int position) {
192        mCursor.moveToPosition(position);
193        return mCursor.getString(
194                mCursor.getColumnIndexOrThrow(UserDictionary.Words.WORD));
195    }
196
197    @Override
198    protected Dialog onCreateDialog(int id) {
199        View content = getLayoutInflater().inflate(R.layout.dialog_edittext, null);
200        final EditText editText = (EditText) content.findViewById(R.id.edittext);
201        // No prediction in soft keyboard mode. TODO: Create a better way to disable prediction
202        editText.setInputType(InputType.TYPE_CLASS_TEXT
203                | InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE);
204
205        return new AlertDialog.Builder(this)
206                .setTitle(R.string.user_dict_settings_add_dialog_title)
207                .setView(content)
208                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
209                    public void onClick(DialogInterface dialog, int which) {
210                        onAddOrEditFinished(editText.getText().toString());
211                        if (mAutoReturn) finish();
212                    }})
213                .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
214                    public void onClick(DialogInterface dialog, int which) {
215                        if (mAutoReturn) finish();
216                    }})
217                .create();
218    }
219
220    @Override
221    protected void onPrepareDialog(int id, Dialog d) {
222        AlertDialog dialog = (AlertDialog) d;
223        EditText editText = (EditText) dialog.findViewById(R.id.edittext);
224        editText.setText(mDialogEditingWord);
225    }
226
227    private void onAddOrEditFinished(String word) {
228        if (mDialogEditingWord != null) {
229            // The user was editing a word, so do a delete/add
230            deleteWord(mDialogEditingWord);
231        }
232
233        // Disallow duplicates
234        deleteWord(word);
235
236        // TODO: present UI for picking whether to add word to all locales, or current.
237        UserDictionary.Words.addWord(this, word.toString(),
238                250, UserDictionary.Words.LOCALE_TYPE_ALL);
239        mCursor.requery();
240        mAddedWordAlready = true;
241    }
242
243    private void deleteWord(String word) {
244        getContentResolver().delete(UserDictionary.Words.CONTENT_URI, DELETE_SELECTION,
245                new String[] { word });
246    }
247
248    private static class MyAdapter extends SimpleCursorAdapter implements SectionIndexer {
249        private AlphabetIndexer mIndexer;
250
251        public MyAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
252            super(context, layout, c, from, to);
253
254            int wordColIndex = c.getColumnIndexOrThrow(UserDictionary.Words.WORD);
255            String alphabet = context.getString(com.android.internal.R.string.fast_scroll_alphabet);
256            mIndexer = new AlphabetIndexer(c, wordColIndex, alphabet);
257        }
258
259        public int getPositionForSection(int section) {
260            return mIndexer.getPositionForSection(section);
261        }
262
263        public int getSectionForPosition(int position) {
264            return mIndexer.getSectionForPosition(position);
265        }
266
267        public Object[] getSections() {
268            return mIndexer.getSections();
269        }
270    }
271}
272