/*

* 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;

using System.Collections.Generic;

namespace SymbianUtils.RawItems

{

	public class RawItemCollection : IEnumerable<RawItem>

	{

		#region Constructors

		public RawItemCollection()

		{

		}

		#endregion

		#region API

        public void Clear()

        {

            iRawItems.Clear();

        }

        public void Add( RawItem aItem )

        {

            iRawItems.Add( aItem );

        }

        public int CountPadding( byte aPaddingByte )

        {

            int ret = 0;

            bool finished = false;

            //

            for ( int i = Count - 1; !finished && i >= 0; i-- )

            {

                RawItem item = this[ i ];

                long dataValue = item.OriginalData;

                //

                for ( int j = 0; j < 4; j++ )

                {

                    long mask = 0x000000FFL << ( j * 8 );

                    long value = ( mask & dataValue );

                    int shiftBy = ( j * 8 );

                    long valueClean = value >> shiftBy;

                    if ( valueClean == aPaddingByte )

                    {

                        ++ret;

                    }

                    else

                    {

                        finished = true;

                        break;

                    }

                }

            }

            //

            return ret;

        }

        public int PrintableCharacterCount( bool aUnicode, bool aIncludeFirstItem, out int aDotCount )

        {

            aDotCount = 0;

            int i = ( aIncludeFirstItem ) ? 0 : 1;

            //

            int ret = 0;

            for ( ; i < iRawItems.Count; i++ )

            {

                RawItem item = iRawItems[ i ];

                ret += item.PrintableCharacterCount( aUnicode, ref aDotCount );

            }

            //

            return ret;

        }

        public int PrintableCharacterCount( bool aUnicode, out int aDotCount )

        {

            int ret = 0;

            aDotCount = 0;

            //

            foreach ( RawItem item in iRawItems )

            {

                ret += item.PrintableCharacterCount( aUnicode, ref aDotCount );

            }

            //

            return ret;

        }

        #endregion

		#region Properties

        public string FirstLine

        {

            get

            {

                StringBuilder ret = new StringBuilder();

                //

                int count = Count;

                for ( int i = 0; i < 8; i += 8 )

                {

                    for ( int j = 0; j < 8 && i + j < count; j++ )

                    {

                        RawItem item = this[ i + j ];

                        ret.Append( item.OriginalCharacterisedData );

                    }

                }

                //

                return ret.ToString();

            }

        }

        public int Count

		{

			get { return iRawItems.Count; }

		}

        public RawItem this[ int aIndex ]

		{

            get

            {

                RawItem ret = iRawItems[ aIndex ];

                return ret;

            }

		}

		#endregion

		#region IEnumerable Members

        IEnumerator IEnumerable.GetEnumerator()

		{

			return new RawItemCollectionEnumerator( this );

		}

        IEnumerator<RawItem> IEnumerable<RawItem>.GetEnumerator()

        {

            return new RawItemCollectionEnumerator( this );

        }

        #endregion

        #region From System.Object

        public override string ToString()

        {

            StringBuilder ret = new StringBuilder();

            //

            int count = Count;

            for ( int i = 0; i < count; i += 8 )

            {

                for ( int j = 0; j < 8 && i + j < count; j++ )

                {

                    RawItem item = this[ i + j ];

                    ret.Append( item.OriginalCharacterisedData );

                }

                ret.Append( System.Environment.NewLine );

            }

            //

            return ret.ToString();

        }

        #endregion

		#region Data members

        private List<RawItem> iRawItems = new List<RawItem>();

		#endregion

	}

}