/*
* Zed Attack Proxy (ZAP) and its related class files.
*
* ZAP is an HTTP/HTTPS proxy for assessing web application security.
*
* Copyright 2014 The ZAP Development Team
*
* 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 org.zaproxy.zap.view.messagecontainer;
import java.util.List;
import org.zaproxy.zap.extension.httppanel.Message;
/**
* A {@code MessageContainer} that can contain multiple messages.
*
* @param <T> the type of messages in this container
* @see MessageContainer
* @see SelectableMessagesContainer
* @see SingleMessageContainer
* @since 2.3.0
*/
public interface MultipleMessagesContainer<T extends Message> extends SingleMessageContainer<T> {
/**
* {@inheritDoc}
* <p>
* If multiple messages are present the first one is returned.
*/
@Override
T getMessage();
/**
* Returns the number of contained messages.
*
* @return the number of messages.
*/
int getNumberOfMessages();
/**
* Returns all the contained messages or an empty {@code List} if none.
* <p>
* No assumptions should be made on the actual implementation type of the {@code List} returned by this method (for example,
* it might be unmodifiable or its elements lazy loaded).
* <p>
* <strong>Note:</strong> Extra care should be taken when getting the messages from the list since it might return
* {@code null} which indicates that an error occurred while getting a message (for example, failed to read a persisted
* message).
*
* @return a {@code List} with all the contained messages, never {@code null}.
*/
List<T> getMessages();
}