/*
 * 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;

public interface GroupMemberListener {
    /**
     * Notifies that a contact has joined into this group.
     *
     * @param contact the contact who has joined into this group.
     */
    public void onMemberJoined(ChatGroup group, Contact contact);

    /**
     * Notifies that a contact has left this group.
     *
     * @param contact the contact who has left the group.
     */
    public void onMemberLeft(ChatGroup group, Contact contact);

    /**
     * Called when a previous request to add or remove a member to/from a
     * group failed.
     *
     * @param error the error information
     */
    public void onError(ChatGroup group, ImErrorInfo error);
}