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/*
* Copyright (C) 2009 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.customlocale2;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Locale;
import android.app.ActivityManagerNative;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.IActivityManager;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.os.RemoteException;
import android.util.Log;
import android.view.ContextMenu;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;
/**
* Displays the list of system locales as well as maintain a custom list of user
* locales. The user can select a locale and apply it or it can create or remove
* a custom locale.
*/
public class CustomLocaleActivity extends ListActivity {
private static final String TAG = "CustomLocale";
private static final boolean DEBUG = true;
private static final int DLG_REMOVE_ID = 0;
private static final String CUSTOM_LOCALES_SEP = " ";
private static final String CUSTOM_LOCALES = "custom_locales";
/** Request code returned when the NewLocaleDialog activity finishes. */
private static final int UPDATE_LIST = 42;
/** Menu item id for applying a locale */
private static final int MENU_APPLY = 43;
/** Menu item id for removing a custom locale */
private static final int MENU_REMOVE = 44;
/** List view displaying system and custom locales. */
private ListView mListView;
/** Textview used to display current locale */
private TextView mCurrentLocaleTextView;
/** Private shared preferences of this activity. */
private SharedPreferences mPrefs;
private Button mRemoveLocaleButton;
private Button mSelectLocaleButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mPrefs = getPreferences(MODE_PRIVATE);
Button addLocaleButton = (Button) findViewById(R.id.add_new_locale_button);
mRemoveLocaleButton = (Button) findViewById(R.id.remove_locale_button);
mSelectLocaleButton = (Button) findViewById(R.id.select_locale_button);
addLocaleButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onAddNewLocale();
}
});
mRemoveLocaleButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog(DLG_REMOVE_ID);
}
});
mSelectLocaleButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onSelectLocale();
}
});
mListView = (ListView) findViewById(android.R.id.list);
mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
mListView.setItemsCanFocus(false);
mListView.setFocusable(true);
mListView.setFocusableInTouchMode(true);
mListView.requestFocus();
setupLocaleList();
mCurrentLocaleTextView = (TextView) findViewById(R.id.current_locale);
displayCurrentLocale();
}
@Override
protected void onResume() {
super.onResume();
updateLocaleButtons();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == UPDATE_LIST && resultCode == RESULT_OK && data != null) {
String locale = data.getExtras().getString(NewLocaleDialog.INTENT_EXTRA_LOCALE);
if (locale != null && locale.length() > 0) {
// Get current custom locale list
String customLocales = mPrefs.getString(CUSTOM_LOCALES, null);
// Update
if (customLocales == null) {
customLocales = locale;
} else {
customLocales += CUSTOM_LOCALES_SEP + locale;
}
// Save prefs
if (DEBUG) {
Log.d(TAG, "add/customLocales: " + customLocales);
}
mPrefs.edit().putString(CUSTOM_LOCALES, customLocales).commit();
Toast.makeText(this,
getString(R.string.added_custom_locale_1s, locale),
Toast.LENGTH_SHORT)
.show();
// Update list view
setupLocaleList();
// Find the item to select it in the list view
checkLocaleInList(locale);
if (data.getExtras().getBoolean(NewLocaleDialog.INTENT_EXTRA_SELECT)) {
changeSystemLocale(locale);
}
}
}
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
updateLocaleButtons();
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
if (menuInfo instanceof AdapterContextMenuInfo) {
int position = ((AdapterContextMenuInfo) menuInfo).position;
Object o = mListView.getItemAtPosition(position);
if (o instanceof LocaleInfo) {
if (((LocaleInfo) o).isCustom()) {
menu.setHeaderTitle("System Locale");
menu.add(0, MENU_APPLY, 0, "Apply");
} else {
menu.setHeaderTitle("Custom Locale");
menu.add(0, MENU_APPLY, 0, "Apply");
menu.add(0, MENU_REMOVE, 0, "Remove");
}
}
}
}
@Override
protected Dialog onCreateDialog(int id) {
if (id == DLG_REMOVE_ID) {
return createRemoveLocaleDialog();
}
return super.onCreateDialog(id);
}
//--- private parts ---
private void setupLocaleList() {
if (DEBUG) {
Log.d(TAG, "Update locate list");
}
ArrayList<LocaleInfo> data = new ArrayList<LocaleInfo>();
// Insert all system locales
String[] locales = getAssets().getLocales();
for (String locale : locales) {
if (locale != null && locale.length() > 0) {
Locale loc = new Locale(locale);
data.add(new LocaleInfo(locale, loc.getDisplayName()));
}
}
locales = null;
// Insert all custom locales
String customLocales = mPrefs.getString(CUSTOM_LOCALES, "");
if (DEBUG) {
Log.d(TAG, "customLocales: " + customLocales);
}
for (String locale : customLocales.split(CUSTOM_LOCALES_SEP)) {
if (locale != null && locale.length() > 0) {
Locale loc = new Locale(locale);
data.add(new LocaleInfo(
locale,
loc.getDisplayName(),
true /*custom*/));
}
}
// Sort all locales by code
Collections.sort(data, new Comparator<LocaleInfo>() {
public int compare(LocaleInfo lhs, LocaleInfo rhs) {
return lhs.getLocale().compareTo(rhs.getLocale());
}
});
// Update the list view adapter
mListView.setAdapter(new ArrayAdapter<LocaleInfo>(
this,
android.R.layout.simple_list_item_single_choice,
data));
updateLocaleButtons();
}
private void changeSystemLocale(String locale) {
if (ChangeLocale.changeSystemLocale(locale)) {
Toast.makeText(this,
getString(R.string.select_locale_1s, locale),
Toast.LENGTH_SHORT)
.show();
}
}
private void displayCurrentLocale() {
try {
IActivityManager am = ActivityManagerNative.getDefault();
Configuration config = am.getConfiguration();
if (config.locale != null) {
String text = String.format("%1$s - %2$s",
config.locale.toString(),
config.locale.getDisplayName());
mCurrentLocaleTextView.setText(text);
checkLocaleInList(config.locale.toString());
}
} catch (RemoteException e) {
if (DEBUG) {
Log.e(TAG, "get current locale failed", e);
}
}
}
/** Find the locale by code to select it in the list view */
private void checkLocaleInList(String locale) {
ListAdapter a = mListView.getAdapter();
for (int i = 0; i < a.getCount(); i++) {
Object o = a.getItem(i);
if (o instanceof LocaleInfo) {
String code = ((LocaleInfo) o).getLocale();
if (code != null && code.equals(locale)) {
mListView.setSelection(i);
mListView.clearChoices();
mListView.setItemChecked(i, true);
updateLocaleButtons();
break;
}
}
}
}
private LocaleInfo getCheckedLocale() {
int pos = mListView.getCheckedItemPosition();
ListAdapter a = mListView.getAdapter();
int n = a.getCount();
if (pos >= 0 && pos < n) {
Object o = a.getItem(pos);
if (o instanceof LocaleInfo) {
return (LocaleInfo) o;
}
}
return null;
}
/** Update the Select/Remove buttons based on the currently checked locale. */
private void updateLocaleButtons() {
LocaleInfo info = getCheckedLocale();
if (info != null) {
// Enable it
mSelectLocaleButton.setEnabled(true);
mSelectLocaleButton.setText(
getString(R.string.select_locale_1s_button, info.getLocale()));
// Enable the remove button only for custom locales and set the tag to the locale
mRemoveLocaleButton.setEnabled(info.isCustom());
} else {
// If nothing is selected, disable the buttons
mSelectLocaleButton.setEnabled(false);
mSelectLocaleButton.setText(R.string.select_locale_button);
mRemoveLocaleButton.setEnabled(false);
}
}
/** Invoked by the button "Add new..." */
private void onAddNewLocale() {
Intent i = new Intent(CustomLocaleActivity.this, NewLocaleDialog.class);
startActivityForResult(i, UPDATE_LIST);
}
/** Invoked by the button Select / mSelectLocaleButton */
private void onSelectLocale() {
LocaleInfo info = getCheckedLocale();
if (info != null) {
changeSystemLocale(info.getLocale());
}
}
/**
* Invoked by the button Remove / mRemoveLocaleButton.
* Creates a dialog to ask for confirmation before actually remove the custom locale.
*/
private Dialog createRemoveLocaleDialog() {
LocaleInfo info = getCheckedLocale();
final String localeToRemove = info == null ? "<error>" : info.getLocale();
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setMessage(getString(R.string.confirm_remove_locale_1s, localeToRemove));
b.setCancelable(false);
b.setPositiveButton(R.string.confirm_remove_locale_yes,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
removeCustomLocale(localeToRemove);
dismissDialog(DLG_REMOVE_ID);
}
});
b.setNegativeButton(R.string.confirm_remove_locale_no,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dismissDialog(DLG_REMOVE_ID);
}
});
return b.create();
}
private void removeCustomLocale(String localeToRemove) {
// Get current custom locale list
String oldLocales = mPrefs.getString(CUSTOM_LOCALES, "");
if (DEBUG) {
Log.d(TAG, "Remove " + localeToRemove + " from custom locales: " + oldLocales);
}
// Update
StringBuilder sb = new StringBuilder();
for (String locale : oldLocales.split(CUSTOM_LOCALES_SEP)) {
if (locale != null && locale.length() > 0 && !locale.equals(localeToRemove)) {
if (sb.length() > 0) {
sb.append(CUSTOM_LOCALES_SEP);
}
sb.append(locale);
}
}
String newLocales = sb.toString();
if (!newLocales.equals(oldLocales)) {
// Save prefs
boolean ok = mPrefs.edit().putString(CUSTOM_LOCALES, newLocales).commit();
if (DEBUG) {
Log.d(TAG, "Prefs commit:" + Boolean.toString(ok) + ". Saved: " + newLocales);
}
Toast.makeText(this,
getString(R.string.removed_custom_locale_1s, localeToRemove),
Toast.LENGTH_SHORT)
.show();
// Update list view
setupLocaleList();
}
}
/**
* Immutable structure that holds the information displayed by a list view item.
*/
private static class LocaleInfo {
private final String mLocale;
private final String mDisplayName;
private final boolean mIsCustom;
public LocaleInfo(String locale, String displayName, boolean isCustom) {
mLocale = locale;
mDisplayName = displayName;
mIsCustom = isCustom;
}
public LocaleInfo(String locale, String displayName) {
this(locale, displayName, false /*custom*/);
}
public String getLocale() {
return mLocale;
}
public boolean isCustom() {
return mIsCustom;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(mLocale)
.append(" - ")
.append(mDisplayName);
if (mIsCustom) {
sb.append(" [Custom]");
}
return sb.toString();
}
}
}