/*************************************************************************
 *                                                                       *
 *  EJBCA Community: The OpenSource Certificate Authority                *
 *                                                                       *
 *  This software is free software; you can redistribute it and/or       *
 *  modify it under the terms of the GNU Lesser General Public           *
 *  License as published by the Free Software Foundation; either         *
 *  version 2.1 of the License, or any later version.                    *
 *                                                                       *
 *  See terms of license at gnu.org.                                     *
 *                                                                       *
 *************************************************************************/
package org.ejbca.ui.psm.jsf;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.faces.component.html.HtmlOutputText;

import org.apache.log4j.Logger;
import org.cesecore.util.ui.DynamicUiComponent;
import org.cesecore.util.ui.DynamicUiProperty;

/**
 * MyFaces HTML UI text output component implementing the {@link PropertyChangeListener} interface 
 * to get noticed for dynamic UI property changes.
 * 
 * @version $Id: JsfDynamicUiHtmlOutputLabel.java 29319 2018-06-25 09:26:18Z bastianf $
 */
public class JsfDynamicUiHtmlOutputLabel extends HtmlOutputText implements DynamicUiComponent, PropertyChangeListener {

    /** Class logger. */
    private static final Logger log = Logger.getLogger(JsfDynamicUiHtmlOutputLabel.class);

    /** DynamicUIProperty reference. */
    private DynamicUiProperty<?> dynamicUiProperty;

    /**
     * Sets the dynamic UI property reference.
     * @param property the dynamic UI property.
     */
    void setDynamicUiProperty(final DynamicUiProperty<?> property) {
        this.dynamicUiProperty = property;
        this.dynamicUiProperty.addDynamicUiComponent(this);
    }

    @Override
    public void propertyChange(final PropertyChangeEvent event) {
        if (log.isTraceEnabled()) {
            log.trace("Property change event for dynamic UI property " + dynamicUiProperty != null ? dynamicUiProperty.getName()
                    : null + " fired: " + event);
        }
        if (event.getOldValue() != event.getNewValue()) {
            setValue(event.getNewValue());
        }
    }

    @Override
    public void setDisabled(boolean disabled) {
        // NOOP.   
    }
}