/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.struts2.action;

import org.apache.struts2.dispatcher.multipart.UploadedFile;

import java.util.List;

/**
 * Actions that want to be aware of all the uploaded file should implement this interface.
 * The {@link org.apache.struts2.interceptor.ActionFileUploadInterceptor} will use the interface
 * to notify action about the multiple uploaded files.
 */
public interface UploadedFilesAware {

    /**
     * Notifies action about the multiple uploaded files, when a single file is uploaded
     * the list will have just one element
     *
     * @param uploadedFiles a list of {@link UploadedFile}, cannot be null. It can be empty.
     */
    void withUploadedFiles(List<UploadedFile> uploadedFiles);

}
