/*
* Copyright 2010 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.todoroo.astrid.gtasks.auth;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
/**
* Choose which account to upload track information to.
* @author Sandor Dornbush
*/
public class AccountChooser {
/**
* The last selected account.
*/
private int selectedAccountIndex = -1;
private Account selectedAccount = null;
/**
* An interface for receiving updates once the user has selected the account.
*/
public interface AccountHandler {
/**
* Handle the account being selected.
* @param account The selected account or null if none could be found
*/
public void handleAccountSelected(Account account);
}
/**
* Chooses the best account to upload to.
* If no account is found the user will be alerted.
* If only one account is found that will be used.
* If multiple accounts are found the user will be allowed to choose.
*
* @param activity The parent activity
* @param handler The handler to be notified when an account has been selected
*/
public void chooseAccount(final Activity activity,
final AccountHandler handler) {
final Account[] accounts = AccountManager.get(activity)
.getAccountsByType("com.google"); //$NON-NLS-1$
if (accounts.length < 1) {
alertNoAccounts(activity, handler);
return;
}
if (accounts.length == 1) {
handler.handleAccountSelected(accounts[0]);
return;
}
// TODO This should be read out of a preference.
if (selectedAccount != null) {
handler.handleAccountSelected(selectedAccount);
return;
}
// Let the user choose.
final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setCancelable(false);
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
selectedAccount = accounts[selectedAccountIndex];
handler.handleAccountSelected(selectedAccount);
}
});
builder.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
handler.handleAccountSelected(null);
}
});
String[] choices = new String[accounts.length];
for (int i = 0; i < accounts.length; i++) {
choices[i] = accounts[i].name;
}
builder.setSingleChoiceItems(choices, selectedAccountIndex,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
selectedAccountIndex = which;
}
});
builder.show();
}
/**
* Puts up a dialog alerting the user that no suitable account was found.
*/
private void alertNoAccounts(final Activity activity,
final AccountHandler handler) {
final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setMessage("No Accounts Found."); //$NON-NLS-1$
builder.setCancelable(true);
builder.setNegativeButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
handler.handleAccountSelected(null);
}
});
builder.show();
}
}