content: /*
   * Copyright (C) 2013 Glyptodon LLC
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  package org.glyptodon.guacamole.net.basic.xml.protocol;
  
  import org.glyptodon.guacamole.net.basic.ProtocolParameter;
  import org.glyptodon.guacamole.net.basic.xml.TagHandler;
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  /**
   * TagHandler for the "param" element.
   *
   * @author Mike Jumper
   */
  public class ParamTagHandler implements TagHandler {
  
      /**
       * The ProtocolParameter backing this tag handler.
       */
      private ProtocolParameter protocolParameter = new ProtocolParameter();
  
      @Override
      public void init(Attributes attributes) throws SAXException {
  
          protocolParameter.setName(attributes.getValue("name"));
          protocolParameter.setTitle(attributes.getValue("title"));
          protocolParameter.setValue(attributes.getValue("value"));
  
          // Parse type
          String type = attributes.getValue("type");
  
          // Text field
          if ("text".equals(type))
              protocolParameter.setType(ProtocolParameter.Type.TEXT);
  
          // Numeric field
          else if ("numeric".equals(type))
              protocolParameter.setType(ProtocolParameter.Type.NUMERIC);
  
          // Password field
          else if ("password".equals(type))
              protocolParameter.setType(ProtocolParameter.Type.PASSWORD);
  
          // Enumerated field
          else if ("enum".equals(type))
              protocolParameter.setType(ProtocolParameter.Type.ENUM);
  
          // Multiline field
          else if ("multiline".equals(type))
              protocolParameter.setType(ProtocolParameter.Type.MULTILINE);
  
          // Boolean field
          else if ("boolean".equals(type)) {
              protocolParameter.setType(ProtocolParameter.Type.BOOLEAN);
  
              if(protocolParameter.getValue() == null)
                  throw new SAXException
                          ("A value is required for the boolean parameter type.");
          }
  
          // Otherwise, fail with unrecognized type
          else
              throw new SAXException("Invalid parameter type: " + type);
  
      }
  
      @Override
      public TagHandler childElement(String localName) throws SAXException {
  
          // Start parsing of option tags
          if (localName.equals("option")) {
  
              // Get tag handler for option tag
              OptionTagHandler tagHandler = new OptionTagHandler();
  
              // Store stub in options collection
              protocolParameter.getOptions().add(
                  tagHandler.asProtocolParameterOption());
              return tagHandler;
  
          }
  
          return null;
  
      }
  
      @Override
      public void complete(String textContent) throws SAXException {
          // Do nothing
      }
  
      /**
       * Returns the ProtocolParameter backing this tag.
       * @return The ProtocolParameter backing this tag.
       */
      public ProtocolParameter asProtocolParameter() {
          return protocolParameter;
      }
  
  }
  