package wox.serial;

import java.lang.reflect.*;
import org.litesoft.core.typeutils.Objects;
import java.util.*;

/**
 * This is a simple object to XML serializer. The SimpleWriter class
 * extends WoxWriter. It takes a C# object and a XMLwriter object.
 * It writes (converts) an object to XML, and writes it using the XMLwriter.
 *
 * Version: 1.0
 * Author: Carlos R. Jaimez Gonzalez
 * Author: Simon M. Lucas
 * Site: http://woxserializer.sourceforge.net/
 *
 * Version: 1.5
 * Author: Steven M Lewis
 *
 * Version: 2.0
 * Author: George Smith
 * SVN: http://svn.xp-dev.com/svn/WOX2/
 * Note: XML form for vs 2 is more compact and therefor incompatible with vs 1
 */

public class SimpleWriter extends Serial implements WoxWriter
{
    private final Hashtable<Object, String> mInstanceToIDs = new Hashtable<Object, String>();
    private final WoxHandlers mWoxHandlers;

    private int mNextID = 1;

    // not much point writing out final values - at least not yet -
    // the reader is not able to set them (though there's probably
    // a hidden way of doing this)

    public SimpleWriter( WoxHandlers pWoxHandlers )
    {
        mWoxHandlers = pWoxHandlers;
    }

    public String createIDfor( Object pObject )
    {
        String zID = Integer.toString( mNextID++ );
        mInstanceToIDs.put( pObject, zID );
        return zID;
    }

    /**
     * This method is the entry point to write an object in XML.
     */
    public void write( Object pObject, Field pField, XMLwriter pWriter, boolean pJustType )
    {
        if ( pObject == null )
        {
            pWriter.writeStartElement( OBJECT );
            pWriter.writeEndElement();
            return;
        }
        if ( mInstanceToIDs.containsKey( pObject ) )
        {
            pWriter.writeStartElement( OBJECT );
            pWriter.writeAttributeString( IDREF, mInstanceToIDs.get( pObject ) );
            pWriter.writeEndElement();
            return;
        }

        Class zNativeType = pObject.getClass();

        WoxHandler zWoxHandler = mWoxHandlers.getNativeHandler( zNativeType );

        if ( pJustType && !zWoxHandler.supportsJustTypeWriting() )
        {
            throw new ApplicationException( "No significant Type infomation for: " + zNativeType.getName() );
        }

        zWoxHandler.writeObject( mWoxHandlers, this, pObject, pField, pWriter, pJustType );
    }
}