/*

* Copyright (c) 2004-2008 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;

namespace CrashDebuggerLib.Structures.KernelObjects

{

    public class DObjectCon : DBase, IEnumerable<DObject>

    {

        #region Constructors

        public DObjectCon( CrashDebuggerInfo aCrashDebugger, DObject.TObjectType aType )

            : base( aCrashDebugger )

        {

            iType = aType;

        }

        #endregion

        #region API

        internal void Add( DObject aObject )

        {

            if ( aObject.Type != Type )

            {

                throw new ArgumentException( "Object is not of the correct type" );

            }

            // Add it to the address-based index.

            iObjectsInOriginalOrder.Add( aObject.KernelAddress, aObject );

            try

            {

                // Must munge in the address, because name is not sufficiently unique. For example

                // there can be dead threads or processes (or anything really) with the same name

                // but since one is dead and the other is not, then they have different addresses.

                string sortedByName = string.Format( "{0}_{1:x8}", aObject, aObject.KernelAddress );

                iObjectsInSortedOrder.Add( sortedByName, aObject );

            }

            catch ( Exception )

            {

                // Keep the two synchronised...

                iObjectsInOriginalOrder.Remove( aObject.KernelAddress );

            }

        }

        public bool Contains( DObject aObject )

        {

            bool exists = iObjectsInOriginalOrder.ContainsKey( aObject.KernelAddress );

            return exists;

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iObjectsInSortedOrder.Count; }

        }

        public int ExpectedCount

        {

            get { return iExpectedCount; }

            set { iExpectedCount = value; }

        }

        public int Index

        {

            get { return iIndex; }

            set { iIndex = value; }

        }

        public DObject this[ uint aAddress ]

        {

            get

            {

                DObject ret = null;

                iObjectsInOriginalOrder.TryGetValue( aAddress, out ret );

                return ret;

            }

        }

        public DObject.TObjectType Type

        {

            get { return iType; }

        }

        public string TypeDescription

        {

            get

            {

                string ret = DObject.AsTypeDescription( iType );

                return ret;

            }

        }

        #endregion

        #region Internal methods

        #endregion

        #region Internal constants

        #endregion

        #region From IEnumerable<DObject>

        public IEnumerator<DObject> GetEnumerator()

        {

            foreach ( KeyValuePair<string, DObject> pair in iObjectsInSortedOrder )

            {

                yield return pair.Value;

            }

        }

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

        {

            foreach ( KeyValuePair<string, DObject> pair in iObjectsInSortedOrder )

            {

                yield return pair.Value;

            }

        }

        #endregion

        #region From System.Object

        public override string ToString()

        {

            StringBuilder ret = new StringBuilder();

            ret.AppendFormat( "[{0:d4}] {1} objects", Count, TypeDescription );

            return ret.ToString();

        }

        #endregion

        #region Data members

        private readonly DObject.TObjectType iType;

        private int iIndex = 0;

        private int iExpectedCount = 0;

        private Dictionary<uint, DObject> iObjectsInOriginalOrder = new Dictionary<uint, DObject>();

        private SortedList<string, DObject> iObjectsInSortedOrder = new SortedList<string, DObject>();

        #endregion

    }

}