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package com.hfg.setting;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.List;

import com.hfg.exception.UnimplementedMethodException;
import com.hfg.util.StringUtil;
import com.hfg.util.collection.CollectionUtil;
import com.hfg.xml.XMLTag;

//------------------------------------------------------------------------------
/**
 Custom XML-serializable settings.
 Requires getInstance(), valueOf(), an XMLTag constructor, or a default constructor.
 

   @author J. Alex Taylor, hairyfatguy.com
 

 */
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------

public class ComplexSetting extends SettingImpl implements Setting
{

   //###########################################################################
   // CONSTRUCTORS
   //###########################################################################

   //---------------------------------------------------------------------------
   public ComplexSetting(String inName)
   {
      super(inName);
   }

   //---------------------------------------------------------------------------
   public ComplexSetting(String inName, Object inValue)
   {
      super(inName, inValue);
   }

   //---------------------------------------------------------------------------
   /**
    * Copy constructor.
    * @param inObj2 the ComplexSetting to clone
    */
   public ComplexSetting(ComplexSetting inObj2)
   {
      this(inObj2.name(), inObj2.getValue());
   }

   //---------------------------------------------------------------------------
   public ComplexSetting(XMLTag inXMLTag)
   {
      super(inXMLTag);

      List subtags = inXMLTag.getSubtags();
      if (CollectionUtil.hasValues(subtags))
      {
         if (subtags.size() > 1)
         {
            throw new RuntimeException("Only one subtag can be present in a ComplexSetting!");
         }

         XMLTag subtag = subtags.get(0);

         String classname = subtag.getAttributeValue(SettingXML.CLASS_ATT);
         if (StringUtil.isSet(classname))
         {
            try
            {
               Class clazz = Class.forName(classname);

               if (Boolean.valueOf(subtag.getAttributeValue(SettingXML.INSTANCE_ATT)))
               {
                  Method method = clazz.getMethod("getInstance");
                  setValue(method.invoke(null));
               }
               else if (Boolean.valueOf(subtag.getAttributeValue(SettingXML.ENUM_ATT)))
               {
                  Method method = clazz.getMethod("valueOf", String.class);
                  setValue(method.invoke(null, subtag.getUnescapedContent()));
               }
               else
               {
                  try
                  {
                     Constructor constructor = clazz.getConstructor(XMLTag.class);
                     setValue(constructor.newInstance(subtag));
                  }
                  catch (NoSuchMethodException e)
                  {
                     Constructor constructor = clazz.getConstructor();
                     setValue(constructor.newInstance());
                  }
               }
            }
            catch (Exception e)
            {
               throw new RuntimeException("Problem extracting setting!", e);
            }
         }
      }
   }

   //###########################################################################
   // PUBLIC METHODS
   //###########################################################################

   //---------------------------------------------------------------------------
   @Override
   public ComplexSetting setValue(Object inValue)
   {
      super.setObjectValue(inValue);
      return this;
   }

    //---------------------------------------------------------------------------
   @Override
   public Object getValue()
   {
      return super.getObjectValue();
   }

    //---------------------------------------------------------------------------
   @Override
   protected void setValueFromString(String inValue)
   {
      throw new UnimplementedMethodException();
   }

   //---------------------------------------------------------------------------
   @Override
   public ComplexSetting clone()
   {
      return new ComplexSetting(this);
   }
}
 















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