/*

* 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.Enum;

using SymbianUtils.Streams;

namespace SymbianStructuresLib.Security

{

    public class SCapabilitySet : IEnumerable<TCapability>

    {

        #region Constructors

        public SCapabilitySet()

		{

        }

        public SCapabilitySet( SymbianStreamReaderLE aReader )

        {

            ulong caps = aReader.ReadUInt32();

            uint high = aReader.ReadUInt32();

            caps += ( high << 32 );

            //

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

            {

                ulong checkVal = (ulong) 1 << i;

                if ( ( checkVal & caps ) == checkVal )

                {

                    TCapability cap = (TCapability) i;

                    iCapabilities.Add( cap );

                }

            }

        }

		#endregion

		#region API

        #endregion

		#region Properties

        public bool this[ TCapability aCapability ]

        {

            get

            {

                return iCapabilities.Contains( aCapability );

            }

        }

		#endregion

		#region Internal constants

        private const int KMaxBitIndex = 64;

        #endregion

        #region From System.Object

        public override string ToString()

        {

            StringBuilder ret = new StringBuilder();

            //

            foreach( TCapability cap in iCapabilities )

            {

                string name = EnumUtils.ToString( cap );

                //

                if ( ret.Length > 0 )

                {

                    ret.Append( ", " );

                }

                //

                ret.Append( name );

            }

            //

            return ret.ToString();

        }

        #endregion

        #region From IEnumerable<TCapability>

        public IEnumerator<TCapability> GetEnumerator()

        {

            foreach ( TCapability cap in iCapabilities )

            {

                yield return cap;

            }

        }

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

        {

            foreach ( TCapability cap in iCapabilities )

            {

                yield return cap;

            }

        }

        #endregion

        #region Data members

        private List<TCapability> iCapabilities = new List<TCapability>();

        #endregion

    }

}