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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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.inputmethod;
import com.android.internal.logging.MetricsLogger;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.Utils;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceGroup;
import android.provider.UserDictionary;
import android.text.TextUtils;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import java.util.List;
import java.util.Locale;
import java.util.TreeSet;
public class UserDictionaryList extends SettingsPreferenceFragment {
public static final String USER_DICTIONARY_SETTINGS_INTENT_ACTION =
"android.settings.USER_DICTIONARY_SETTINGS";
private String mLocale;
@Override
protected int getMetricsCategory() {
return MetricsLogger.INPUTMETHOD_USER_DICTIONARY;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setPreferenceScreen(getPreferenceManager().createPreferenceScreen(getActivity()));
getActivity().getActionBar().setTitle(R.string.user_dict_settings_title);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
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;
}
public static TreeSet<String> getUserDictionaryLocalesSet(Context context) {
final Cursor cursor = context.getContentResolver().query(
UserDictionary.Words.CONTENT_URI, new String[] { UserDictionary.Words.LOCALE },
null, null, null);
final TreeSet<String> localeSet = new TreeSet<String>();
if (null == cursor) {
// The user dictionary service is not present or disabled. Return null.
return null;
}
try {
if (cursor.moveToFirst()) {
final int columnIndex = cursor.getColumnIndex(UserDictionary.Words.LOCALE);
do {
final String locale = cursor.getString(columnIndex);
localeSet.add(null != locale ? locale : "");
} while (cursor.moveToNext());
}
} finally {
cursor.close();
}
// CAVEAT: Keep this for consistency of the implementation between Keyboard and Settings
// if (!UserDictionarySettings.IS_SHORTCUT_API_SUPPORTED) {
// // For ICS, we need to show "For all languages" in case that the keyboard locale
// // is different from the system locale
// localeSet.add("");
// }
final InputMethodManager imm =
(InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
final List<InputMethodInfo> imis = imm.getEnabledInputMethodList();
for (final InputMethodInfo imi : imis) {
final List<InputMethodSubtype> subtypes =
imm.getEnabledInputMethodSubtypeList(
imi, true /* allowsImplicitlySelectedSubtypes */);
for (InputMethodSubtype subtype : subtypes) {
final String locale = subtype.getLocale();
if (!TextUtils.isEmpty(locale)) {
localeSet.add(locale);
}
}
}
// We come here after we have collected locales from existing user dictionary entries and
// enabled subtypes. If we already have the locale-without-country version of the system
// locale, we don't add the system locale to avoid confusion even though it's technically
// correct to add it.
if (!localeSet.contains(Locale.getDefault().getLanguage().toString())) {
localeSet.add(Locale.getDefault().toString());
}
return localeSet;
}
/**
* Creates the entries that allow the user to go into the user dictionary for each locale.
* @param userDictGroup The group to put the settings in.
*/
protected void createUserDictSettings(PreferenceGroup userDictGroup) {
final Activity activity = getActivity();
userDictGroup.removeAll();
final TreeSet<String> localeSet =
UserDictionaryList.getUserDictionaryLocalesSet(activity);
if (mLocale != null) {
// If the caller explicitly specify empty string as a locale, we'll show "all languages"
// in the list.
localeSet.add(mLocale);
}
if (localeSet.size() > 1) {
// Have an "All languages" entry in the languages list if there are two or more active
// languages
localeSet.add("");
}
if (localeSet.isEmpty()) {
userDictGroup.addPreference(createUserDictionaryPreference(null, activity));
} else {
for (String locale : localeSet) {
userDictGroup.addPreference(createUserDictionaryPreference(locale, activity));
}
}
}
/**
* Create a single User Dictionary Preference object, with its parameters set.
* @param locale The locale for which this user dictionary is for.
* @return The corresponding preference.
*/
protected Preference createUserDictionaryPreference(String locale, Activity activity) {
final Preference newPref = new Preference(getActivity());
final Intent intent = new Intent(USER_DICTIONARY_SETTINGS_INTENT_ACTION);
if (null == locale) {
newPref.setTitle(Locale.getDefault().getDisplayName());
} else {
if ("".equals(locale))
newPref.setTitle(getString(R.string.user_dict_settings_all_languages));
else
newPref.setTitle(Utils.createLocaleFromString(locale).getDisplayName());
intent.putExtra("locale", locale);
newPref.getExtras().putString("locale", locale);
}
newPref.setIntent(intent);
newPref.setFragment(com.android.settings.UserDictionarySettings.class.getName());
return newPref;
}
@Override
public void onResume() {
super.onResume();
createUserDictSettings(getPreferenceScreen());
}
}
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