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/**
* Copyright (C) 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package com.android.settings;
import android.app.ListFragment;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.UserDictionary;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AlphabetIndexer;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SectionIndexer;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import com.android.settings.inputmethod.UserDictionaryAddWordContents;
import com.android.settings.inputmethod.UserDictionarySettingsUtils;
import java.util.Locale;
public class UserDictionarySettings extends ListFragment {
private static final String TAG = "UserDictionarySettings";
private static final String[] QUERY_PROJECTION = {
UserDictionary.Words._ID, UserDictionary.Words.WORD, UserDictionary.Words.SHORTCUT
};
// The index of the shortcut in the above array.
private static final int INDEX_SHORTCUT = 2;
// Either the locale is empty (means the word is applicable to all locales)
// or the word equals our current locale
private static final String QUERY_SELECTION =
UserDictionary.Words.LOCALE + "=?";
private static final String QUERY_SELECTION_ALL_LOCALES =
UserDictionary.Words.LOCALE + " is null";
private static final String DELETE_SELECTION_WITH_SHORTCUT = UserDictionary.Words.WORD
+ "=? AND " + UserDictionary.Words.SHORTCUT + "=?";
private static final String DELETE_SELECTION_WITHOUT_SHORTCUT = UserDictionary.Words.WORD
+ "=? AND " + UserDictionary.Words.SHORTCUT + " is null OR "
+ UserDictionary.Words.SHORTCUT + "=''";
private static final int OPTIONS_MENU_ADD = Menu.FIRST;
private Cursor mCursor;
protected String mLocale;
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(
com.android.internal.R.layout.preference_list_fragment, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getActivity().getActionBar().setTitle(R.string.user_dict_settings_title);
final Intent intent = getActivity().getIntent();
final String localeFromIntent =
null == intent ? null : intent.getStringExtra("locale");
final Bundle arguments = getArguments();
final String localeFromArguments =
null == arguments ? null : arguments.getString("locale");
final String locale;
if (null != localeFromArguments) {
locale = localeFromArguments;
} else if (null != localeFromIntent) {
locale = localeFromIntent;
} else {
locale = null;
}
mLocale = locale;
mCursor = createCursor(locale);
TextView emptyView = (TextView) getView().findViewById(android.R.id.empty);
emptyView.setText(R.string.user_dict_settings_empty_text);
final ListView listView = getListView();
listView.setAdapter(createAdapter());
listView.setFastScrollEnabled(true);
listView.setEmptyView(emptyView);
setHasOptionsMenu(true);
// Show the language as a subtitle of the action bar
getActivity().getActionBar().setSubtitle(
UserDictionarySettingsUtils.getLocaleDisplayName(getActivity(), mLocale));
}
private Cursor createCursor(final String locale) {
// Locale can be any of:
// - The string representation of a locale, as returned by Locale#toString()
// - The empty string. This means we want a cursor returning words valid for all locales.
// - null. This means we want a cursor for the current locale, whatever this is.
// Note that this contrasts with the data inside the database, where NULL means "all
// locales" and there should never be an empty string. The confusion is called by the
// historical use of null for "all locales".
// TODO: it should be easy to make this more readable by making the special values
// human-readable, like "all_locales" and "current_locales" strings, provided they
// can be guaranteed not to match locales that may exist.
if ("".equals(locale)) {
// Case-insensitive sort
return getActivity().managedQuery(UserDictionary.Words.CONTENT_URI, QUERY_PROJECTION,
QUERY_SELECTION_ALL_LOCALES, null,
"UPPER(" + UserDictionary.Words.WORD + ")");
} else {
final String queryLocale = null != locale ? locale : Locale.getDefault().toString();
return getActivity().managedQuery(UserDictionary.Words.CONTENT_URI, QUERY_PROJECTION,
QUERY_SELECTION, new String[] { queryLocale },
"UPPER(" + UserDictionary.Words.WORD + ")");
}
}
private ListAdapter createAdapter() {
return new MyAdapter(getActivity(),
R.layout.user_dictionary_item, mCursor,
new String[] { UserDictionary.Words.WORD, UserDictionary.Words.SHORTCUT },
new int[] { android.R.id.text1, android.R.id.text2 }, this);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
final String word = getWord(position);
final String shortcut = getShortcut(position);
if (word != null) {
showAddOrEditDialog(word, shortcut);
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
MenuItem actionItem =
menu.add(0, OPTIONS_MENU_ADD, 0, R.string.user_dict_settings_add_menu_title)
.setIcon(R.drawable.ic_menu_add_white);
actionItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM |
MenuItem.SHOW_AS_ACTION_WITH_TEXT);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == OPTIONS_MENU_ADD) {
showAddOrEditDialog(null, null);
return true;
}
return false;
}
/**
* Add or edit a word. If editingWord is null, it's an add; otherwise, it's an edit.
* @param editingWord the word to edit, or null if it's an add.
* @param editingShortcut the shortcut for this entry, or null if none.
*/
private void showAddOrEditDialog(final String editingWord, final String editingShortcut) {
final Bundle args = new Bundle();
args.putInt(UserDictionaryAddWordContents.EXTRA_MODE, null == editingWord
? UserDictionaryAddWordContents.MODE_INSERT
: UserDictionaryAddWordContents.MODE_EDIT);
args.putString(UserDictionaryAddWordContents.EXTRA_WORD, editingWord);
args.putString(UserDictionaryAddWordContents.EXTRA_SHORTCUT, editingShortcut);
args.putString(UserDictionaryAddWordContents.EXTRA_LOCALE, mLocale);
SettingsActivity sa = (SettingsActivity) getActivity();
sa.startPreferencePanel(
com.android.settings.inputmethod.UserDictionaryAddWordFragment.class.getName(),
args, R.string.user_dict_settings_add_dialog_title, null, null, 0);
}
private String getWord(final int position) {
if (null == mCursor) return null;
mCursor.moveToPosition(position);
// Handle a possible race-condition
if (mCursor.isAfterLast()) return null;
return mCursor.getString(
mCursor.getColumnIndexOrThrow(UserDictionary.Words.WORD));
}
private String getShortcut(final int position) {
if (null == mCursor) return null;
mCursor.moveToPosition(position);
// Handle a possible race-condition
if (mCursor.isAfterLast()) return null;
return mCursor.getString(
mCursor.getColumnIndexOrThrow(UserDictionary.Words.SHORTCUT));
}
public static void deleteWord(final String word, final String shortcut,
final ContentResolver resolver) {
if (TextUtils.isEmpty(shortcut)) {
resolver.delete(
UserDictionary.Words.CONTENT_URI, DELETE_SELECTION_WITHOUT_SHORTCUT,
new String[] { word });
} else {
resolver.delete(
UserDictionary.Words.CONTENT_URI, DELETE_SELECTION_WITH_SHORTCUT,
new String[] { word, shortcut });
}
}
private static class MyAdapter extends SimpleCursorAdapter implements SectionIndexer {
private AlphabetIndexer mIndexer;
private final ViewBinder mViewBinder = new ViewBinder() {
@Override
public boolean setViewValue(View v, Cursor c, int columnIndex) {
if (columnIndex == INDEX_SHORTCUT) {
final String shortcut = c.getString(INDEX_SHORTCUT);
if (TextUtils.isEmpty(shortcut)) {
v.setVisibility(View.GONE);
} else {
((TextView)v).setText(shortcut);
v.setVisibility(View.VISIBLE);
}
v.invalidate();
return true;
}
return false;
}
};
public MyAdapter(Context context, int layout, Cursor c, String[] from, int[] to,
UserDictionarySettings settings) {
super(context, layout, c, from, to);
if (null != c) {
final String alphabet = context.getString(
com.android.internal.R.string.fast_scroll_alphabet);
final int wordColIndex = c.getColumnIndexOrThrow(UserDictionary.Words.WORD);
mIndexer = new AlphabetIndexer(c, wordColIndex, alphabet);
}
setViewBinder(mViewBinder);
}
@Override
public int getPositionForSection(int section) {
return null == mIndexer ? 0 : mIndexer.getPositionForSection(section);
}
@Override
public int getSectionForPosition(int position) {
return null == mIndexer ? 0 : mIndexer.getSectionForPosition(position);
}
@Override
public Object[] getSections() {
return null == mIndexer ? null : mIndexer.getSections();
}
}
}