/*
 * Copyright (C) 2007 Esmertec AG.
 * Copyright (C) 2007 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.im.engine;

/**
 * Interface that allows for implementing classes to listen for new message.
 * Listeners are registered with ChatSession objects.
 */
public interface MessageListener {
    /**
     * Calls when a new message has arrived.
     *
     * @param ses the ChatSession.
     * @param msg the incoming message.
     */
    public void onIncomingMessage(ChatSession ses, Message msg);

    /**
     * Calls when an error occurs to send a message.
     *
     * @param ses the ChatSession.
     * @param msg the message which was sent.
     * @param error the error information.
     */
    public void onSendMessageError(ChatSession ses, Message msg, ImErrorInfo error);
}