/*
    * EL4J, the Extension Library for the J2EE, adds incremental enhancements to
    * the spring framework, http://el4j.sf.net
    * Copyright (C) 2005 by ELCA Informatique SA, Av. de la Harpe 22-24,
    * 1000 Lausanne, Switzerland, http://www.elca.ch
    *
    * EL4J is published under the GNU Lesser General Public License (LGPL)
    * Version 2.1. See http://www.gnu.org/licenses/
    *
   * This program 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.
   *
   * For alternative licensing, please contact info@elca.ch
   */
  package ch.elca.el4j.services.gui.swing.cookswing.binding;
  
  import java.util.List;
  
  import javax.swing.JComboBox;
  
  import org.jdesktop.beansbinding.AutoBinding.UpdateStrategy;
  import org.jdesktop.swingbinding.JComboBoxBinding;
  import org.jdesktop.swingbinding.SwingBindings;
  import org.springframework.context.ApplicationContext;
  import org.w3c.dom.Element;
  
  import com.silvermindsoftware.hitch.validation.response.ComboBoxRenderer;
  import com.silvermindsoftware.hitch.validation.response.DefaultValidatingComboBoxRenderer;
  
  import ch.elca.el4j.services.gui.swing.GUIApplication;
  import ch.elca.el4j.util.config.GenericConfig;
  
  import cookxml.core.DecodeEngine;
  import cookxml.core.exception.CreatorException;
  
  /**
   * The cookSwing creator for general purpose <comboboxbinding>s.
   *
   * @svnLink $Revision: 3873 $;$Date: 2009-08-04 13:59:45 +0200 (Di, 04. Aug 2009) $;$Author: swismer $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/framework/modules/swing/src/main/java/ch/elca/el4j/services/gui/swing/cookswing/binding/ComboBoxBindingCreator.java $
   *
   * @author Stefan Wismer (SWI)
   */
  public class ComboBoxBindingCreator extends AbstractBindingCreator {
  	// <comboboxbinding> specific attributes
  	protected static final String RENDERER = "rendererBean";
  
  	/** {@inheritDoc} */
  	@SuppressWarnings("unchecked")
  	public Object create(String parentNS, String parentTag, Element elm,
  		Object parentObj, DecodeEngine decodeEngine) throws CreatorException {
  		
  		// read attributes
  		UpdateStrategy updateStrategy = getUpdateStrategy(elm);
  		List listSource = (List) getSource(decodeEngine, elm);
  		if (listSource == null) {
  			return null;
  		}
  		JComboBox comboBox = (JComboBox) parentObj;
  		
  		// renderer and validation
  		String renderer = elm.getAttribute(RENDERER);
  		ComboBoxRenderer cr = null;
  		if (renderer.equals("")) {
  			GenericConfig config = GUIApplication.getInstance().getConfig();
  			DefaultValidatingComboBoxRenderer validatingRenderer
  				= (DefaultValidatingComboBoxRenderer)
  				config.get("comboBoxRenderer");
  			validatingRenderer.setValidate(getValidate(elm));
  			cr = validatingRenderer;
  		} else {
  			ApplicationContext ctx
  				= GUIApplication.getInstance().getSpringContext();
  			cr = (ComboBoxRenderer) ctx.getBean(renderer);
  		}
  		
  		cr.setProperty(elm.getAttribute(PROPERTY));
  		comboBox.setRenderer(cr);
  		
  		// create binding
  		JComboBoxBinding cb = SwingBindings.createJComboBoxBinding(
  			updateStrategy, listSource, comboBox);
  		
  		addBinding(decodeEngine, cb);
  		
  		return new NoAddValueHolder<JComboBoxBinding>(cb);
  	}
  }