/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are met:

*

* - Redistributions of source code must retain the above copyright notice,

*   this list of conditions and the following disclaimer.

* - Redistributions in binary form must reproduce the above copyright notice,

*   this list of conditions and the following disclaimer in the documentation

*   and/or other materials provided with the distribution.

* - Neither the name of Nokia Corporation nor the names of its contributors

*   may be used to endorse or promote products derived from this software

*   without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

* POSSIBILITY OF SUCH DAMAGE.

* 

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

using System;

using System.IO;

using System.Text;

using System.Text.RegularExpressions;

using System.Collections;

using System.Collections.Generic;

using SymbianUtils.FileSystem.FilePair;

namespace HeapLib.Reconstructor.DataSources

{

    public sealed class DataSourceCollection : IEnumerable<DataSource>

    {

        #region Constructors & destructor

        public DataSourceCollection()

        {

        }

        public DataSourceCollection( DataSourceCollection aList1, DataSourceCollection aList2 )

        {

            foreach ( DataSource source in aList1 )

            {

                if ( aList2.IndexOf( source.ThreadName ) >= 0 )

                {

                    Add( source );

                }

            }

        }

        #endregion

        #region API

        public int IndexOf( string aThread )

        {

            int ret = -1;

            //

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

            {

                DataSource src = this[ i ];

                if ( src.ThreadName.ToUpper() == aThread.ToUpper() )

                {

                    ret = i;

                    break;

                }

            }

            //

            return ret;

        }

        public void RemoveAt( int aIndex )

        {

            iEntries.RemoveAt( aIndex );

        }

        public void Clear()

        {

            iEntries.Clear();

        }

        internal void RemoveEmptySources()

        {

            int count = Count;

            for ( int i = count - 1; i >= 0; i-- )

            {

                DataSource src = this[ i ];

                if ( src.IsEmpty )

                {

                    iEntries.RemoveAt( i );

                }

            }

        }

        internal void Add( DataSource aSource )

        {

            iEntries.Add( aSource );

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iEntries.Count; }

        }

        public DataSource this[ int aIndex ]

        {

            get

            {

                DataSource ret = iEntries[ aIndex ];

                return ret;

            }

        }

        public DataSource this[ string aThread ]

        {

            get

            {

                DataSource ret = null;

                //

                int index = IndexOf( aThread );

                if ( index >= 0 && index < Count )

                {

                    ret = this[ index ];

                }

                //

                return ret;

            }

        }

        public DataSource Last

        {

            get

            {

                DataSource ret = this[ Count - 1 ];

                return ret;

            }

        }

        #endregion

        #region IEnumerable<DataSource> Members

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

        {

            return new DataSourceCollectionEnumerator( this );

        }

        IEnumerator IEnumerable.GetEnumerator()

        {

            return new DataSourceCollectionEnumerator( this );

        }

        #endregion

        #region Data members

        private List<DataSource> iEntries = new List<DataSource>();

        #endregion

    }

    #region Internal enumerator class

    internal sealed class DataSourceCollectionEnumerator : IEnumerator<DataSource>

    {

        #region Constructors & destructor

        public DataSourceCollectionEnumerator( DataSourceCollection aCollection )

        {

            iCollection = aCollection;

        }

        #endregion

        #region IEnumerator Members

        public void Reset()

        {

            iCurrentIndex = -1;

        }

        public object Current

        {

            get

            {

                return (DataSource) iCollection[ iCurrentIndex ];

            }

        }

        public bool MoveNext()

        {

            return ( ++iCurrentIndex < iCollection.Count );

        }

        #endregion

        #region From IEnumerator<DataSource>

        DataSource IEnumerator<DataSource>.Current

        {

            get { return iCollection[ iCurrentIndex ]; }

        }

        #endregion

        #region From IDisposable

        public void Dispose()

        {

        }

        #endregion

        #region Data members

        private readonly DataSourceCollection iCollection;

        private int iCurrentIndex = -1;

        #endregion

    }

    #endregion

}