/*

* 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 "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:

*

*/

using System;

using System.IO;

using System.Xml;

using System.Text;

using System.Collections.Generic;

using SymbianTree;

using SymbianUtils;

using SymbianXmlInputLib.Elements;

using SymbianXmlInputLib.Parser.Nodes;

namespace SymbianXmlInputLib.Parser

{

    public class SXILParser : DisposableObject

    {

        #region Constructors

        public SXILParser( string aFileName, string aRootNodeName, SXILDocument aDocument )

        {

            iFileName = aFileName;

            iDocument = aDocument;

            iRootNodeName = aRootNodeName;

            //

            XmlReaderSettings settings = new XmlReaderSettings();

            settings.ConformanceLevel = ConformanceLevel.Auto;

            settings.IgnoreComments = true;

            settings.CheckCharacters = true;

            settings.IgnoreWhitespace = true;

            //

            iReader = XmlReader.Create( iFileName, settings );

            iXmlDocument.Load( iReader );

        }

        #endregion

        #region API

        public void Parse()

        {

            ValidateRoot();

            ParseTopLevelNodes();

        }

        public void CategoryAdd( string aName, SXILParserNodeCollection aParsers )

        {

            SXILParserNodeCategory category = new SXILParserNodeCategory( aName );

            category.Children = aParsers;

            iParsers.Add( category );

        }

        public void CategoryAdd( string aName, params SXILParserNode[] aParserNodes )

        {

            SXILParserNodeCategory category = new SXILParserNodeCategory( aName );

            foreach ( SXILParserNode parserNode in aParserNodes )

            {

                category.Children.Add( parserNode );

            }

            iParsers.Add( category );

        }

        #endregion

        #region Properties

        internal SXILDocument Document

        {

            get { return iDocument; }

        }

        #endregion

        #region Internal methods

        private void ValidateRoot()

        {

            XmlElement root = iXmlDocument.DocumentElement;

            if ( root != null && root.Name != iRootNodeName )

            {

                throw new Exception( "Document Root Incorrect" );

            }

        }

        private void ParseTopLevelNodes()

        {

            foreach ( XmlNode child in iXmlDocument.DocumentElement )

            {

                bool handled = iParsers.XmlParse( child, this );

                if ( handled )

                {

                }

            }

        }

        private void OnElementStart()

        {

        }

        #endregion

        #region From DisposableObject

        protected override void CleanupManagedResources()

        {

            base.CleanupManagedResources();

            iReader.Close();

        }

        #endregion

        #region Data members

        private readonly string iFileName;

        private readonly string iRootNodeName;

        private readonly SXILDocument iDocument;

        private readonly XmlReader iReader;

        private XmlDocument iXmlDocument = new XmlDocument();

        private SXILParserNodeCollection iParsers = new SXILParserNodeCollection();

        #endregion

    }

}