using System;

using System.Text;

using System.IO;

using System.Windows.Forms;

namespace SharpDisplayManager

{

    public class RichTextBoxTextWriter : TextWriter

    {

        public delegate void WriteDelegate(char aChar);

        RichTextBox iRichTextBox = null;

        string iAccumulator = "";

        private char iLastChar='\n';

        public RichTextBoxTextWriter(RichTextBox aRichTextBox)

        {

            iRichTextBox = aRichTextBox;            

        }

        public override void Write(char aChar)

        {

            if (aChar == '\r')

            {

                //Skip

                return;

            }

            //Put our time stamp if starting a new line

            char previousChar = iLastChar;

            iLastChar = aChar;

            if (previousChar == '\n')

            {

                //Write(DateTime.Now.ToString("yyyy/MM/dd - HH:mm:ss.fff: "));

                Write(DateTime.Now.ToString("MM/dd HH:mm:ss.fff: "));

            }

            base.Write(aChar);

            if (iRichTextBox.InvokeRequired)

            {

                lock (iAccumulator)

                {

                    iAccumulator += aChar;

                }

                //Invoke was not working from here

                //WriteDelegate d = new WriteDelegate(Write);

                //iRichTextBox.Invoke(d, new object[] { aChar });

            }

            else

            {

                Flush();

                iRichTextBox.AppendText(aChar.ToString()); // When character data is written, append it to the text box.

            }

        }

        public override Encoding Encoding

        {

            get { return System.Text.Encoding.UTF8; }

        }

        /// <summary>

        /// 

        /// </summary>

        public override void Flush()

        {

            base.Flush();

            lock (iAccumulator)

            {

                if (!string.IsNullOrEmpty(iAccumulator))

                {

                    iRichTextBox.AppendText(iAccumulator); // When character data is written, append it to the text box.

                    iAccumulator = "";

                }

            }

        }

    }

}