/*

* 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;

using System.Collections.Generic;

namespace SymbolLib.CodeSegDef

{

	public class CodeSegResolverEntryCollection : IEnumerable<CodeSegResolverEntry>

	{

		#region Constructors & destructor

		public CodeSegResolverEntryCollection()

			: this( 10 )

		{

		}

        public CodeSegResolverEntryCollection( int aGranularity )

		{

            iEntries = new List<CodeSegResolverEntry>( aGranularity );

		}

		#endregion

		#region API

		public void Reset()

		{

			iEntries.Clear();

		}

        public void Add( CodeSegResolverEntry aNewEntry )

		{

            if ( aNewEntry.ImageFileName.Length == 0 )

            {

                throw new ArgumentException( "Invalid code seg definition entry" );

            }

            // Our check-for-exists predicate

            Predicate<CodeSegResolverEntry> existsPredicate = delegate( CodeSegResolverEntry aEntry )

            {

                return aEntry.ImageFileName.ToLower() == aNewEntry.ImageFileName.ToLower();

            };

            // Check whether there is already an entry that matches

            if ( !iEntries.Exists( existsPredicate ) )

            {

                iEntries.Add( aNewEntry );

            }

            else

            {

#if TRACE_RESOLVER

                System.Diagnostics.Debug.WriteLine( "IGNORING DUPE CodeSegDefinition: " + aNewEntry.ToString() );

#endif

            }

		}

        public void Remove( CodeSegResolverEntry aRemoveEntry )

        {

            if  ( String.IsNullOrEmpty( aRemoveEntry.ImageFileName ) )

            {

                // Remove by environment file name

                Predicate<CodeSegResolverEntry> matchPredicate = delegate( CodeSegResolverEntry aEntry )

                {

                    return aEntry.EnvironmentFileName.ToLower() == aRemoveEntry.EnvironmentFileName.ToLower();

                };

                iEntries.RemoveAll( matchPredicate );

            }

            else

            {

                // Remove by phone file name

                Predicate<CodeSegResolverEntry> matchPredicate = delegate( CodeSegResolverEntry aEntry )

                {

                    return aEntry.ImageFileName.ToLower() == aRemoveEntry.ImageFileName.ToLower();

                };

                iEntries.RemoveAll( matchPredicate );

            }

        }

        public int IndexOf( CodeSegResolverEntry aEntry )

        {

            int index = -1;

            //

            int count = iEntries.Count;

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

            {

                CodeSegResolverEntry entry = iEntries[ i ];

                //

                if ( entry.EnvironmentFileNameAndPath.ToLower() == aEntry.EnvironmentFileNameAndPath.ToLower() )

                {

                    index = i;

                    break;

                }

                ++i;

            }

            //

            return index;

        }

        public void Sort()

        {

            iEntries.Sort( new Comparison<CodeSegResolverEntry>( Compare ) );

        }

        public CodeSegResolverEntry FindByCodeSegmentFileNameAndPath( string aImageCodeSegmentFileNameAndPath )

		{

            CodeSegResolverEntry temp = new CodeSegResolverEntry( string.Empty, aImageCodeSegmentFileNameAndPath );

			int index = iEntries.IndexOf( temp );

			int x = 0;

			if	( x != 0 )

			{

				int count = iEntries.Count;

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

				{

                    CodeSegResolverEntry e = this[ i ];

#if TRACE_RESOLVER

					System.Diagnostics.Debug.WriteLine( "Entry = ENV[ " + e.EnvironmentFileName + " => " + e.EnvironmentFileNameAndPath + " ] IMG[ " + e.ImageFileName + " => " + e.ImageFileNameAndPath + " ]" );

#endif

				}

			}

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

			{

				temp = this[ index ];

			}

			else

			{

				// Not found

				temp = null;

			}

			//

			return temp;

		}

		#endregion

		#region Properties

		public int Count

		{

			get { return iEntries.Count; }

		}

        public CodeSegResolverEntry this[ int aIndex ]

		{

			get { return iEntries[ aIndex ]; }

		}

		#endregion

        #region IEnumerable<CodeSegResolverEntry> Members

        IEnumerator IEnumerable.GetEnumerator()

        {

            foreach ( CodeSegResolverEntry entry in iEntries )

            {

                yield return entry;

            }

        }

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

        {

            foreach ( CodeSegResolverEntry entry in iEntries )

            {

                yield return entry;

            }

        }

        #endregion

        #region Internal methods

        private static int Compare( CodeSegResolverEntry aLeft, CodeSegResolverEntry aRight )

        {

            return aLeft.EnvironmentFileNameAndPath.CompareTo( aRight.EnvironmentFileNameAndPath );

        }

        #endregion

        #region Data members

        private readonly List<CodeSegResolverEntry> iEntries;

		#endregion

    }

}