/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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.
 *
 * Contributors:
 *      Kamesh Sampath - initial implementation
 *******************************************************************************/

package com.liferay.ide.portlet.core.model.internal;

import org.eclipse.sapphire.Property;
import org.eclipse.sapphire.modeling.xml.XmlElement;
import org.eclipse.sapphire.modeling.xml.XmlNode;
import org.eclipse.sapphire.modeling.xml.XmlPath;
import org.eclipse.sapphire.modeling.xml.XmlValueBindingImpl;
import org.eclipse.sapphire.modeling.xml.annotations.CustomXmlValueBinding;

/**
 * @author kamesh.sampath
 */
public final class ChoiceValueBinding extends XmlValueBindingImpl
{
    private String[] params;
    private XmlPath path;

    @Override
    public XmlNode getXmlNode()
    {
        final XmlElement parent = xml();

        XmlElement element = parent.getChildElement( params[1], false );

        if( element != null )
        {
            return element;
        }

        element = parent.getChildElement( params[1], false );

        if( element != null )
        {
            return element;
        }

        return null;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.BindingImpl#init(org.eclipse.sapphire.modeling.IModelElement,
     * org.eclipse.sapphire.modeling.ModelProperty, java.lang.String[])
     */
    @Override
    public void init( Property property )
    {
        super.init( property );

        this.params = property.definition().getAnnotation( CustomXmlValueBinding.class ).params();
        this.path = new XmlPath( params[0], resource().getXmlNamespaceResolver() );
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.ValueBindingImpl#read()
     */
    @Override
    public String read()
    {
        final XmlElement parent = xml( false );
        // System.out.println( "ChoiceValueBinding.read() - \n" + parent );
        String value = null;
        if( parent != null )
        {
            // System.out.println( "ChoiceValueBinding.read()" + params[0] );
            final XmlElement param1Element = parent.getChildElement( params[1], false );
            final XmlElement param2Element = parent.getChildElement( params[2], false );

            if( param1Element != null && params[0].equals( params[1] ) )
            {
                // System.out.println( "ChoiceValueBinding.read() - \n" + eventNameElement );
                value = param1Element.getText();
            }
            else if( param2Element != null && params[0].equals( params[2] ) )
            {

                // System.out.println( "ChoiceValueBinding.read() - \n" + eventQNameElement );
                value = param2Element.getText();
            }
        }

        return value;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.ValueBindingImpl#write(java.lang.String)
     */
    @Override
    public void write( final String value )
    {
        final XmlElement parent = xml( true );

        // System.out.println( "EventDefinitionValueBinding.write()" + parent );

        final XmlElement param1Element = parent.getChildElement( params[1], false );
        final XmlElement param2Element = parent.getChildElement( params[2], false );

        if( param1Element != null && params[0].equals( params[1] ) )
        {
            parent.removeChildNode( params[2] );
        }
        else if( param2Element != null && params[0].equals( params[2] ) )
        {

            parent.removeChildNode( params[1] );
        }

        parent.setChildNodeText( this.path, value, true );

    }

}