client/idrepo/enduser/src/main/java/org/apache/syncope/client/enduser/panels/AbstractFormPanel.java

/*
 * 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.syncope.client.enduser.panels;

import java.io.Serializable;
import org.apache.commons.lang3.SerializationUtils;
import org.apache.wicket.PageReference;
import org.apache.wicket.markup.html.panel.Panel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class AbstractFormPanel<T extends Serializable> extends Panel {

    private static final long serialVersionUID = 6650311507433421554L;

    protected static final Logger LOG = LoggerFactory.getLogger(AbstractFormPanel.class);

    protected final PageReference pageRef;

    protected final T defaultItem;

    protected T item;

    public AbstractFormPanel(final String id, final T defaultItem, final PageReference pageReference) {
        super(id);
        this.defaultItem = defaultItem;
        this.pageRef = pageReference;
    }

    protected T getOriginalItem() {
        return item;
    }

    protected T newModelObject() {
        if (item == null) {
            // keep the original item: the which one before the changes performed during wizard browsing
            item = SerializationUtils.clone(defaultItem);
        }

        // instantiate a new model object and return it
        return SerializationUtils.clone(item);
    }

    public PageReference getPageReference() {
        return pageRef;
    }
}