// AttributeEditorFactory.java
// $Id: AttributeEditorFactory.java,v 1.2 1999/03/05 13:33:14 bmahe Exp $
// (c) COPYRIGHT MIT and INRIA, 1997.
// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.jigadmin.editors ;

import java.util.Properties;

import org.w3c.jigsaw.admin.RemoteResource;

import org.w3c.tools.resources.Attribute;

import org.w3c.jigadmin.PropertyManager;

import org.w3c.jigadmin.RemoteResourceWrapper;

import org.w3c.jigadm.editors.AttributeEditor;

/**
 * The AttributeEditor factory.
 * @version $Revision: 1.2 $
 * @author  Benoît Mahé (bmahe@w3.org)
 */
public class AttributeEditorFactory {
    
    /**
     * Get an editor for the Attribute element of the Resource. If the editor
     * for the specified attribute in the specified resource is not found,
     * we try to find an editor for the same attribute in the superclasses
     * of the resource. If it is still not found, we try to find an editor
     * for the superclass of the attribute in the specified resource,
     * if still not found, we iterate the process.
     * @param resource the RemoteResource which contains informations about
     * the server resource.
     * @param attribute the attribute to be edited
     * @return an AttributeEditor, or <strong>null</strong> if none found
     */

    public static synchronized
    AttributeEditor getEditor(RemoteResourceWrapper rrw, Attribute attribute) {
	RemoteResource resource = rrw.getResource();

	PropertyManager pm = PropertyManager.getPropertyManager();
	Properties props = pm.getAttributeProperties(rrw, attribute);
	String className = (String) props.get("class");
	if ( className == null ) {
	    System.out.println("can't edit "+attribute.getName()+" !");
	    return null;
	}
	try {
	    Class cls = Class.forName(className);
	    return (AttributeEditor) cls.newInstance();
	} catch (Exception ex) {
	    ex.printStackTrace();
	}
	return null;
    }
}
