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/*
* Copyright (C) 2008-2009 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.inputmethod.latin;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Locale;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceGroup;
import android.preference.PreferenceManager;
import android.text.TextUtils;
public class InputLanguageSelection extends PreferenceActivity {
private String mSelectedLanguages;
private ArrayList<Loc> mAvailableLanguages = new ArrayList<Loc>();
private static final String[] BLACKLIST_LANGUAGES = {
"ko", "ja", "zh"
};
private static class Loc implements Comparable {
static Collator sCollator = Collator.getInstance();
String label;
Locale locale;
public Loc(String label, Locale locale) {
this.label = label;
this.locale = locale;
}
@Override
public String toString() {
return this.label;
}
public int compareTo(Object o) {
return sCollator.compare(this.label, ((Loc) o).label);
}
}
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.language_prefs);
// Get the settings preferences
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
mSelectedLanguages = sp.getString(LatinIME.PREF_SELECTED_LANGUAGES, "");
String[] languageList = mSelectedLanguages.split(",");
mAvailableLanguages = getUniqueLocales();
PreferenceGroup parent = getPreferenceScreen();
for (int i = 0; i < mAvailableLanguages.size(); i++) {
CheckBoxPreference pref = new CheckBoxPreference(this);
Locale locale = mAvailableLanguages.get(i).locale;
pref.setTitle(LanguageSwitcher.toTitleCase(locale.getDisplayName(locale)));
boolean checked = isLocaleIn(locale, languageList);
pref.setChecked(checked);
parent.addPreference(pref);
}
}
private boolean isLocaleIn(Locale locale, String[] list) {
String lang = get5Code(locale);
for (int i = 0; i < list.length; i++) {
if (lang.equalsIgnoreCase(list[i])) return true;
}
// If it matches the current locale
Locale displayLocale = getResources().getConfiguration().locale;
if (lang.equalsIgnoreCase(get5Code(displayLocale))) {
return true;
}
return false;
}
private String get5Code(Locale locale) {
String country = locale.getCountry();
return locale.getLanguage()
+ (TextUtils.isEmpty(country) ? "" : "_" + country);
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
// Save the selected languages
String checkedLanguages = "";
PreferenceGroup parent = getPreferenceScreen();
int count = parent.getPreferenceCount();
for (int i = 0; i < count; i++) {
CheckBoxPreference pref = (CheckBoxPreference) parent.getPreference(i);
if (pref.isChecked()) {
Locale locale = mAvailableLanguages.get(i).locale;
checkedLanguages += get5Code(locale) + ",";
}
}
if (checkedLanguages.length() < 1) checkedLanguages = null; // Save null
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
Editor editor = sp.edit();
editor.putString(LatinIME.PREF_SELECTED_LANGUAGES, checkedLanguages);
editor.commit();
}
ArrayList<Loc> getUniqueLocales() {
String[] locales = getAssets().getLocales();
Arrays.sort(locales);
ArrayList<Loc> uniqueLocales = new ArrayList<Loc>();
final int origSize = locales.length;
Loc[] preprocess = new Loc[origSize];
int finalSize = 0;
for (int i = 0 ; i < origSize; i++ ) {
String s = locales[i];
int len = s.length();
if (len == 5) {
String language = s.substring(0, 2);
String country = s.substring(3, 5);
Locale l = new Locale(language, country);
// Exclude languages that are not relevant to LatinIME
if (arrayContains(BLACKLIST_LANGUAGES, language)) continue;
if (finalSize == 0) {
preprocess[finalSize++] =
new Loc(LanguageSwitcher.toTitleCase(l.getDisplayName(l)), l);
} else {
// check previous entry:
// same lang and a country -> upgrade to full name and
// insert ours with full name
// diff lang -> insert ours with lang-only name
if (preprocess[finalSize-1].locale.getLanguage().equals(
language)) {
preprocess[finalSize-1].label = LanguageSwitcher.toTitleCase(
preprocess[finalSize-1].locale.getDisplayName());
preprocess[finalSize++] =
new Loc(LanguageSwitcher.toTitleCase(l.getDisplayName()), l);
} else {
String displayName;
if (s.equals("zz_ZZ")) {
} else {
displayName = LanguageSwitcher.toTitleCase(l.getDisplayName(l));
preprocess[finalSize++] = new Loc(displayName, l);
}
}
}
}
}
for (int i = 0; i < finalSize ; i++) {
uniqueLocales.add(preprocess[i]);
}
return uniqueLocales;
}
private boolean arrayContains(String[] array, String value) {
for (int i = 0; i < array.length; i++) {
if (array[i].equalsIgnoreCase(value)) return true;
}
return false;
}
}
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