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The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing. ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.

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/*
 * 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.http;

import java.awt.Component;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.parosproxy.paros.network.HttpMessage;

/**
 * A default implementation of a {@code MultipleHttpMessagesContainer}.
 * 
 * Note: Users of this class should provide list of {@code HttpMessage}s that are loaded/read as needed (for
 * example, from database with {@code PersistedHttpMessagesList}) to avoid keeping the {@code HttpMessage}s in memory or
 * alternatively use {@code MultipleHistoryReferencesContainer}.
 * 
 * @see MultipleHttpMessagesContainer
 * @see MultipleHistoryReferencesContainer
 * @see PersistedHttpMessagesList
 * @since 2.3.0
 */
public class DefaultMultipleHttpMessagesContainer extends AbstractHttpMessageContainer implements MultipleHttpMessagesContainer {

    private final List httpMessages;

    /**
     * Constructs a {@code DefaultMultipleHttpMessagesContainer} with no contained {@code HttpMessage}s and with the given
     * container {@code name} and {@code component}.
     * 
     * @param name the name of the container
     * @param component the GUI component of the container
     * @throws IllegalArgumentException if the given {@code name} or {@code component} is {@code null}.
     */
    public DefaultMultipleHttpMessagesContainer(String name, Component component) {
        this(name, component, null);
    }

    /**
     * Constructs a {@code DefaultMultipleHttpMessagesContainer} with the given container {@code name} and {@code component} and
     * contained {@code httpMessages}.
     * 
     * @param name the name of the container
     * @param component the GUI component of the container
     * @param httpMessages the contained HTTP messages, {@code null} or empty list if none
     * @throws IllegalArgumentException if the given {@code name} or {@code component} is {@code null}.
     */
    public DefaultMultipleHttpMessagesContainer(String name, Component component, List httpMessages) {
        super(name, component);

        if (httpMessages == null || httpMessages.isEmpty()) {
            this.httpMessages = Collections.emptyList();
        } else {
            this.httpMessages = Collections.unmodifiableList(new ArrayList<>(httpMessages));
        }

    }

    @Override
    public boolean isEmpty() {
        return httpMessages.isEmpty();
    }

    @Override
    public HttpMessage getMessage() {
        if (!isEmpty()) {
            return httpMessages.get(0);
        }
        return null;
    }

    @Override
    public int getNumberOfMessages() {
        return httpMessages.size();
    }

    @Override
    public List getMessages() {
        return httpMessages;
    }

}