#region Imported Regions

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Scripting.Hosting;
using System.IO;
using System.Collections;
using System.Collections.ObjectModel;
using System.Collections.Specialized; 

#endregion

#region Namespace Declaration

namespace Org.TechA.Wpf.UserControls
{
    /// <summary>
    /// The Model for the IronPython console.
    /// </summary>
    internal sealed class DlrConsoleModel
    {
        #region Private Members
        
        private readonly ObservableCollection<ScriptScope> _scopes;
        private readonly TextWriter _writer;
        private readonly ScriptEngine _engine;
        private readonly List<string> _commandCache;
        private int _commandCacheCurrentIndex;
        #endregion

        #region Constructors

        public DlrConsoleModel(TextWriter writer, ScriptEngine engine)
        {
            _commandCache = new List<string>();
            _writer = writer;
            _engine = engine;
            _scopes = new ObservableCollection<ScriptScope>();
            _scopes.CollectionChanged +=
                new NotifyCollectionChangedEventHandler(_scopes_CollectionChanged);
        } 

        #endregion

        #region Event Delegates


        void _scopes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.Action == NotifyCollectionChangedAction.Add)
            {

            }
        } 

        #endregion

        #region Accessor Mutators

        /// <summary>
        /// User Defined List of commands that need to be stored in 
        /// for simplified navigation using the up and down arrows to allow 
        /// for repeating commands
        /// </summary>
        public List<string> CommandCache
        {
            get { return _commandCache; }
        }

        /// <summary>
        /// User Defined list of scopes
        /// avaialable to the IronPython Runtime.
        /// </summary>
        public IList<ScriptScope> Scopes
        {
            get { return _scopes; }
        }

        /// <summary>
        /// The TextWriter used by a stream
        /// that captures the STDIO from the
        /// IronPython Runtime.
        /// </summary>
        public TextWriter Writer
        {
            get { return _writer; }
        }

        /// <summary>
        /// The IronPython ScriptEngine for 
        /// the shell (console).
        /// </summary>
        public ScriptEngine Engine
        {
            get { return _engine; }
        }

        /// <summary>
        /// 
        /// </summary>
        public int CommandCacheCurrentIndex
        {
            get { return _commandCacheCurrentIndex; }
            set { _commandCacheCurrentIndex = value; }
        }

        #endregion

    }
}

#endregion