xref: /packages/apps/UnifiedEmail/src/com/android/mail/ui/AccountController.java

/*
 * Copyright (C) 2012 Google Inc.
 * Licensed to 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.mail.ui;

import android.database.DataSetObserver;

import com.android.mail.providers.Account;
import com.android.mail.providers.AccountObserver;

/**
 * This class consolidates account-specific actions taken by a mail activity.
 */
public interface AccountController {
    /**
     * Registers to receive changes to the current account, and obtain the current account.
     */
    void registerAccountObserver(DataSetObserver observer);

    /**
     * Removes a listener from receiving current account changes.
     */
    void unregisterAccountObserver(DataSetObserver observer);

    /**
     * Returns the current account in use by the controller. Instead of calling this method,
     * consider registering for account changes using
     * {@link AccountObserver#initialize(AccountController)}, which not only provides the current
     * account, but also updates to the account, in case of settings changes.
     */
    Account getAccount();
}