/*

* 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.Text;

using System.Collections.Generic;

using System.IO;

using CrashItemLib.Engine;

using CrashXmlPlugin.FileFormat.Node;

using CrashXmlPlugin.FileFormat.Document;

using CrashXmlPlugin.FileFormat.Segment.Entries;

using SymbianUtils.PluginManager;

namespace CrashXmlPlugin.FileFormat.Segment

{

	internal class CXmlNodeSegmentTable : CXmlNode, IEnumerable<CXmlSegBase>

	{

		#region Constructors

        public CXmlNodeSegmentTable()

            : base( Constants.SegmentTable )

		{

            AddChildren();

        }

		#endregion

        #region From CXmlNode

        public override void XmlSerialize( CXmlDocumentSerializationParameters aParameters )

        {

            try

            {

                // Serialize data to string

                using ( CXmlDocumentSerializationParameters newParams = new CXmlDocumentSerializationParameters( aParameters, aParameters.Document, iSerializedData ) )

                {

                    base.XmlSerialize( newParams );

                    // The serialized XML data which is stored to this class' data member will

                    // be written later on by the segment dictionary.

                    newParams.Writer.Flush();

                    // Tidy up head and tail so that it matches the rest of the document.

                    string indent = aParameters.Writer.Settings.IndentChars;

                    string text = iSerializedData.ToString();

                    using ( StringReader reader = new StringReader( text ) )

                    {

                        iSerializedData.Length = 0;

                        string line = reader.ReadLine();

                        while ( line != null )

                        {

                            iSerializedData.AppendLine( indent + line );

                            line = reader.ReadLine();

                        }

                    }

                    iSerializedData.Insert( 0, System.Environment.NewLine );

                }

            }

            catch ( Exception )

            {

            }

        }

        #endregion

        #region Properties

        internal string SerializedData

        {

            get { return iSerializedData.ToString(); }

        }

        #endregion

        #region Internal methods

        private void AddChildren()

        {

            PluginManager<CXmlSegBase> plugins = new PluginManager<CXmlSegBase>( 1 );

            plugins.LoadFromCallingAssembly();

            // Sort them by priority

            SortedList<int, CXmlSegBase> list = new SortedList<int,CXmlSegBase>();

            foreach( CXmlSegBase seg in plugins )

            {

                list.Add( seg.SegmentPriority, seg );

            }

            // Now they are sorted, add them as children

            foreach ( KeyValuePair<int, CXmlSegBase> kvp in list )

            {

                base.Add( kvp.Value );

            }

        }

        #endregion

        #region From IEnumerable<CXmlSegBase>

        public IEnumerator<CXmlSegBase> GetEnumerator()

        {

            foreach ( SymbianTree.SymNode node in base.Children )

            {

                if ( node is CXmlSegBase )

                {

                    CXmlSegBase ret = (CXmlSegBase) node;

                    yield return ret;

                }

            }

        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()

        {

            foreach ( SymbianTree.SymNode node in base.Children )

            {

                if ( node is CXmlSegBase )

                {

                    CXmlSegBase ret = (CXmlSegBase) node;

                    yield return ret;

                }

            }

        }

        #endregion

        #region Data members

        private StringBuilder iSerializedData = new StringBuilder();

		#endregion

    }

}