gr.interamerican.wicket.behavior.EmptyOnSelectionChangedBehavior.java Source code

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Here is the source code for gr.interamerican.wicket.behavior.EmptyOnSelectionChangedBehavior.java

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/*******************************************************************************
 * Copyright (c) 2013 INTERAMERICAN PROPERTY AND CASUALTY INSURANCE COMPANY S.A. 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v3
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/copyleft/lesser.html
 * 
 * This library is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * See the GNU Lesser General Public License for more details.
 ******************************************************************************/
package gr.interamerican.wicket.behavior;

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.panel.Panel;

/**
 * This behavior can be added to a {@link DropDownChoice} component just to ensure that
 * the model of the component is updated when the onchange event is triggered.
 */
public class EmptyOnSelectionChangedBehavior extends AjaxFormComponentUpdatingBehavior {

    /**
     * serialVersionUID.
     */
    private static final long serialVersionUID = 1L;

    /**
     * The panel to rerender.
     */
    private Panel panel;

    /**
     * Creates a new UpdateTypesDropDownChoiceBehavior object. 
     * @param panel  The panel to rerender.
     */
    public EmptyOnSelectionChangedBehavior(Panel panel) {
        super("onchange"); //$NON-NLS-1$ 
        this.panel = panel;
    }

    @Override
    protected void onUpdate(AjaxRequestTarget target) {
        target.add(panel);
    }
}