/*
    * Copyright 2003 - 2013 The eFaps Team
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * Revision:        $Rev$
   * Last Changed:    $Date$
   * Last Changed By: $Author$
   */
  
  package org.efaps.update.schema.ui;
  
  import java.net.URL;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.efaps.admin.event.EventType;
  import org.efaps.update.LinkInstance;
  import org.efaps.update.event.Event;
  import org.efaps.util.EFapsException;
  
  /**
   * @author The eFaps Team
   * @version $Id$
   */
  public class FormUpdate
      extends AbstractCollectionUpdate
  {
  
      /** Link from form to type as classification form. */
      private static final Link LINK2TYPE = new UniqueLink("Admin_UI_LinkIsTypeFormFor", "From", "Admin_DataModel_Type",
                      "To");
  
      /**
       * Set of all links.
       */
      private static final Set<Link> ALLLINKS = new HashSet<Link>();
      static  {
          FormUpdate.ALLLINKS.add(FormUpdate.LINK2TYPE);
      }
  
      /**
       *
       * @param _url URL of the file
       */
      public FormUpdate(final URL _url)
      {
          super(_url, "Admin_UI_Form", FormUpdate.ALLLINKS);
      }
  
      /**
       * Creates new instance of class {@link FormDefinition}.
       *
       * @return new definition instance
       * @see FormDefinition
       */
      @Override
      protected AbstractDefinition newDefinition()
      {
          return new FormDefinition();
      }
  
      /**
       * Definition for a Form.
       */
      public class FormDefinition
          extends Definition
      {
          /**
           * {@inheritDoc}
           * @throws EFapsException
           */
          @Override
          protected void readXML(final List<String> _tags,
                                 final Map<String, String> _attributes,
                                 final String _text)
              throws EFapsException
          {
              final String value = _tags.get(0);
              if ("type".equals(value)) {
                  // assigns a type to the form for which this form instance is the
                  // classification form
                  addLink(FormUpdate.LINK2TYPE, new LinkInstance(_text));
              } else if ("trigger".equals(value)) {
                  if (_tags.size() == 1) {
                      addEvent(new Event(_attributes.get("name"), EventType.valueOf(_attributes.get("event")),
                                      _attributes.get("program"), _attributes.get("method"), _attributes.get("index")));
                 } else if ((_tags.size() == 2) && "property".equals(_tags.get(1))) {
                     getEvents().get(getEvents().size() - 1).addProperty(_attributes.get("name"), _text);
                 } else {
                     super.readXML(_tags, _attributes, _text);
                 }
 
             } else {
                 super.readXML(_tags, _attributes, _text);
             }
         }
     }
 }