/*
    * 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.action;
  
  import javax.swing.AbstractButton;
  import javax.swing.Action;
  
  import org.jdesktop.application.Application;
  import org.jdesktop.application.ApplicationContext;
  
  import ch.elca.el4j.services.gui.swing.ActionsContext;
  
  import cookxml.cookswing.CookSwing;
  import cookxml.core.DecodeEngine;
  import cookxml.core.exception.SetterException;
  import cookxml.core.interfaces.Setter;
  
  /**
   * This class is a cookXml setter, which sets actions defined by "@Action"
   * for buttons.
   *
   * @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/action/ButtonActionSetter.java $
   *
   * @author Stefan Wismer (SWI)
   */
  public class ButtonActionSetter implements Setter {
  	/**
  	 * The class containing "@Action" annotated methods.
  	 */
  	private Object m_actionHolder;
  	
  	/**
  	 * The default constructor: actionHolder is the associated class.
  	 * @see CookSwing#CookSwing(Object)
  	 */
  	public ButtonActionSetter() { }
  	
  	/**
  	 * @param actionHolder    the class containing "@Action" annotated methods
  	 */
  	public ButtonActionSetter(Object actionHolder) {
  		m_actionHolder = actionHolder;
  	}
  	
  	/** {@inheritDoc} */
  	public void setAttribute(String ns, String tag,
  		String attrNS, String attr, Object obj, Object value,
  		DecodeEngine decodeEngine) throws SetterException {
  		
  		Object actionHolder = m_actionHolder;
  		if (actionHolder == null) {
  			actionHolder = decodeEngine.getVariable("this");
  		}
  		
  		Action action = null;
  		
  		String actionName = (String) value;
  		// Check attrValue if it contains class name
  		String[] parsedValues = actionName.split("#");
  		Class<?> cls = null;
  		if (parsedValues.length == 2) {
  			try {
  				cls =  Class.forName(parsedValues[0]);
  				ApplicationContext ac = Application.getInstance().getContext();
  				action = ac.getActionMap(cls, actionHolder).get(parsedValues[1]);
  			} catch (ClassNotFoundException e) {
  				action = null;
  			}
  		}
  		
  		if (action == null) {
  			ActionsContext actionsContext;
  			if (actionHolder instanceof ActionsContextAware) {
  				actionsContext = ((ActionsContextAware) actionHolder).getActionsContext();
  			} else {
  				// use ActionsContext of GUIApplication as parent context and extend it with the actionHolder
  				actionsContext = ActionsContext.extendDefault(actionHolder);
  			}
  			
  			action = actionsContext.getAction(actionName);
  			if (action == null) {
  				throw new ActionNotFoundException(actionName);
  			}
  		}
  		
 		AbstractButton button = (AbstractButton) obj;
 		button.setAction(action);
 	}
 }