/*

* 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.Collections.Generic;

using System.Text;

using System.IO;

namespace SymbianUtils.FileSystem

{

    public class FSExtensionList : IEnumerable<FSExtensionDescriptor>

    {

        #region Constructors

        public FSExtensionList()

        {

        }

        #endregion

        #region API

        public void Clear()

        {

            iEntries.Clear();

        }

        public void Add( string aExtension, string aDescription )

        {

            Add( new FSExtensionDescriptor( aExtension, aDescription ) );

        }

        public void Add( FSExtensionDescriptor aEntry )

        {

            if ( !Contains( aEntry ) )

            {

                iEntries.Add( aEntry.GetHashCode(), aEntry );

            }

        }

        public void AddRange( IEnumerable<FSExtensionDescriptor> aEntries )

        {

            foreach ( FSExtensionDescriptor entry in aEntries )

            {

                Add( entry );

            }

        }

        public bool Contains( string aExtension )

        {

            bool ret = false;

            //

            foreach ( FSExtensionDescriptor entry in this )

            {

                if ( entry.ContainsExtension( aExtension ) )

                {

                    ret = true;

                    break;

                }

            }

            //

            return ret;

        }

        public bool Contains( FSExtensionDescriptor aEntry )

        {

            bool ret = iEntries.ContainsKey( aEntry.GetHashCode() );

            return ret;

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iEntries.Count; }

        }

        public FSExtensionDescriptor this[ int aIndex ]

        {

            get { return iEntries[ aIndex ]; }

        }

        public FSExtensionDescriptor this[ string aExtension ]

        {

            get

            {

                FSExtensionDescriptor ret = null;

                //

                if ( Contains( aExtension ) )

                {

                    FSExtensionDescriptor temp = new FSExtensionDescriptor( aExtension );

                    ret = iEntries[ temp.GetHashCode() ];

                }

                //

                return ret;

            }

        }

        #endregion

        #region Internal methods

        #endregion

        #region From System.Object

        public override string ToString()

        {

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

            StringBuilder ret = new StringBuilder();

            foreach ( FSExtensionDescriptor ext in this )

            {

                string extString = ext.ToString();

                ret.AppendFormat( "{0};", extString );

            }

            // Add "all files"

            ret.Append( "All Files (*.*)|*.*" );

            return ret.ToString();

        }

        #endregion

        #region From IEnumerable<FSExtensionDescriptor>

        public IEnumerator<FSExtensionDescriptor> GetEnumerator()

        {

            foreach ( KeyValuePair<int, FSExtensionDescriptor> kvp in iEntries )

            {

                yield return kvp.Value;

            }

        }

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

        {

            foreach ( KeyValuePair<int, FSExtensionDescriptor> kvp in iEntries )

            {

                yield return kvp.Value;

            }

        }

        #endregion

        #region Data members

        private SortedList<int, FSExtensionDescriptor> iEntries = new SortedList<int, FSExtensionDescriptor>();

        #endregion

    }

}