/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.cdt.debug.common.internal.source.lookup;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.eclipse.cdt.debug.internal.core.sourcelookup.InternalSourceLookupMessages;

import org.eclipse.cdt.debug.internal.core.sourcelookup.MapEntrySourceContainer;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.Path;

import org.eclipse.debug.core.DebugPlugin;

import org.eclipse.debug.core.sourcelookup.ISourceContainer;

import org.eclipse.debug.core.sourcelookup.ISourceContainerType;

import org.eclipse.debug.core.sourcelookup.containers.AbstractSourceContainerTypeDelegate;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

public class SymbianSourceContainerType extends AbstractSourceContainerTypeDelegate {

	private final static String ELEMENT_MAPPING = "mapping"; //$NON-NLS-1$

	private final static String ELEMENT_MAP_ENTRY = "mapEntry"; //$NON-NLS-1$

	private final static String ATTR_EPOCROOT = "epocroot"; //$NON-NLS-1$

	private final static String ATTR_MEMENTO = "memento"; //$NON-NLS-1$

	public ISourceContainer createSourceContainer( String memento ) throws CoreException {

		Node node = parseDocument( memento );

		if ( node.getNodeType() == Node.ELEMENT_NODE ) {

			Element element = (Element)node;

			if ( ELEMENT_MAPPING.equals( element.getNodeName() ) ) {

				String epocroot = element.getAttribute( ATTR_EPOCROOT );

				if ( epocroot == null ) 

					epocroot = ""; //$NON-NLS-1$

				List entries = new ArrayList();

				Node childNode = element.getFirstChild();

				while( childNode != null ) {

					if ( childNode.getNodeType() == Node.ELEMENT_NODE ) {

						Element child = (Element)childNode;

						if ( ELEMENT_MAP_ENTRY.equals( child.getNodeName() ) ) {

							String childMemento = child.getAttribute( ATTR_MEMENTO );

							if ( childMemento == null || childMemento.length() == 0 ) {

								abort( InternalSourceLookupMessages.getString( "MappingSourceContainerType.0" ), null ); //$NON-NLS-1$

							}

							ISourceContainerType type = DebugPlugin.getDefault().getLaunchManager().getSourceContainerType( MapEntrySourceContainer.TYPE_ID );

							MapEntrySourceContainer entry = (MapEntrySourceContainer)type.createSourceContainer( childMemento );

							entries.add( entry );

						}

					}

					childNode = childNode.getNextSibling();

				}

				SymbianSourceContainer container = new SymbianSourceContainer( new Path( epocroot ) );

				Iterator it = entries.iterator();

				while( it.hasNext() ) {

					container.addMapEntry( (MapEntrySourceContainer)it.next() );

				}

				return container;

			}

			abort( InternalSourceLookupMessages.getString( "MappingSourceContainerType.1" ), null ); //$NON-NLS-1$

		}

		abort( InternalSourceLookupMessages.getString( "MappingSourceContainerType.2" ), null ); //$NON-NLS-1$

		return null;		

	}

	/* (non-Javadoc)

	 * @see org.eclipse.debug.core.sourcelookup.ISourceContainerTypeDelegate#getMemento(org.eclipse.debug.core.sourcelookup.ISourceContainer)

	 */

	public String getMemento( ISourceContainer container ) throws CoreException {

		Document document = newDocument();

		Element element = document.createElement( ELEMENT_MAPPING );

		element.setAttribute( ATTR_EPOCROOT, ((SymbianSourceContainer)container).getEpocRoot().toOSString() );

		ISourceContainer[] entries = ((SymbianSourceContainer)container).getSourceContainers();

		for ( int i = 0; i < entries.length; ++i ) {

			Element child = document.createElement( ELEMENT_MAP_ENTRY );

			child.setAttribute( ATTR_MEMENTO, entries[i].getType().getMemento( entries[i] ) );

			element.appendChild( child );

		}

		document.appendChild( element );

		return serializeDocument( document );

	}

}