/*

* 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.Collections.Generic;

using System.Text;

using SymbianUtils;

namespace SymbianUtils.FileTypes

{

    public class SymFileTypeList : IEnumerable<SymFileType>

    {

        #region Constructors

        public SymFileTypeList()

        {

        }

        #endregion

        #region API

        public void Clear()

        {

            iTypes.Clear();

        }

        public void Add( SymFileType aType )

        {

            if ( !iTypes.ContainsKey( aType.Extension ) )

            {

                iTypes.Add( aType.Extension.ToUpper(), aType );

            }

        }

        public void AddRange( IEnumerable<SymFileType> aTypes )

        {

            foreach ( SymFileType type in aTypes )

            {

                Add( type );

            }

        }

        public bool IsSupported( string aFileName )

        {

            string ext = Path.GetExtension( aFileName );

            bool ret = iTypes.ContainsKey( ext.ToUpper() );

            return ret;

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iTypes.Count; }

        }

        #endregion

        #region From System.Object

        public override string ToString()

        {

            // Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*

            StringBuilder ret = new StringBuilder();

            //

            foreach ( KeyValuePair<string, SymFileType> kvp in iTypes )

            {

                string extension = kvp.Value.ToString();

                ret.Append( "|" );

            }

            // Remove last | if present

            int length = ret.Length;

            if ( length > 0 )

            {

                if ( ret[ length - 1 ] == '|' )

                {

                    ret.Length = length - 1; 

                }

            }

            //

            return ret.ToString();

        }

        #endregion

        #region From IEnumerable<SymFileType>

        public IEnumerator<SymFileType> GetEnumerator()

        {

            foreach ( KeyValuePair<string,SymFileType> type in iTypes )

            {

                yield return type.Value;

            }

        }

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

        {

            foreach ( KeyValuePair<string, SymFileType> type in iTypes )

            {

                yield return type.Value;

            }

        }

        #endregion

        #region Data members

        private Dictionary<string, SymFileType> iTypes = new Dictionary<string, SymFileType>();

        #endregion

    }

}