privatechat.cs

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Threading;
using System.Runtime;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters;
using System.Reflection;
using System.Configuration;
using ChatMediator;
using ChatClient;

namespace ChatClient
{
	public delegate void PrivateUserLeft(string userName);
	/// <summary>
	/// Summary description for PrivateChat.
	/// </summary>
	/// 	
	public class PrivateChat : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox grpPrivateChat;
		private System.Windows.Forms.Label lblErrorMessage;
		private System.Windows.Forms.Button btnSend;
		private System.Windows.Forms.TextBox txtSendMessage;
		private System.Windows.Forms.TextBox txtMessage;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		#region My Variables
		
		private string callerName = string.Empty;
		private string myName = string.Empty;
		private string message = string.Empty;
		private IMediator im;
		private EventsClass em;
		private IClientImplement iciClient;
		public event PrivateUserLeft UserLeft;
		private string httpServerUrl = ConfigurationSettings.AppSettings["HttpServerURL"].ToString();
		private string tcpServerUrl = ConfigurationSettings.AppSettings["TcpServerURL"].ToString();

		#endregion

		#region Public Properties
		
		public string CallerName
		{
			get
			{
				return this.callerName;
			}
			set
			{
				this.callerName = value;
			}
		}

		public string MyName
		{
			get
			{
				return this.myName;
			}
			set
			{
				this.myName = value;
			}
		}

		public string Message
		{
			get
			{
				return this.message;
			}
			set
			{
				this.message = value;
			}
		}

		#endregion

		public PrivateChat()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.grpPrivateChat = new System.Windows.Forms.GroupBox();
			this.lblErrorMessage = new System.Windows.Forms.Label();
			this.btnSend = new System.Windows.Forms.Button();
			this.txtSendMessage = new System.Windows.Forms.TextBox();
			this.txtMessage = new System.Windows.Forms.TextBox();
			this.grpPrivateChat.SuspendLayout();
			this.SuspendLayout();
			// 
			// grpPrivateChat
			// 
			this.grpPrivateChat.Controls.Add(this.lblErrorMessage);
			this.grpPrivateChat.Controls.Add(this.btnSend);
			this.grpPrivateChat.Controls.Add(this.txtSendMessage);
			this.grpPrivateChat.Controls.Add(this.txtMessage);
			this.grpPrivateChat.Location = new System.Drawing.Point(16, 8);
			this.grpPrivateChat.Name = "grpPrivateChat";
			this.grpPrivateChat.Size = new System.Drawing.Size(384, 312);
			this.grpPrivateChat.TabIndex = 1;
			this.grpPrivateChat.TabStop = false;
			this.grpPrivateChat.Text = "groupBox1";
			// 
			// lblErrorMessage
			// 
			this.lblErrorMessage.ForeColor = System.Drawing.Color.Red;
			this.lblErrorMessage.Location = new System.Drawing.Point(16, 248);
			this.lblErrorMessage.Name = "lblErrorMessage";
			this.lblErrorMessage.Size = new System.Drawing.Size(352, 48);
			this.lblErrorMessage.TabIndex = 11;
			// 
			// btnSend
			// 
			this.btnSend.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(128)), ((System.Byte)(255)));
			this.btnSend.Font = new System.Drawing.Font("Microsoft Sans Serif", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.btnSend.Location = new System.Drawing.Point(300, 184);
			this.btnSend.Name = "btnSend";
			this.btnSend.Size = new System.Drawing.Size(72, 48);
			this.btnSend.TabIndex = 10;
			this.btnSend.Text = "Send";
			this.btnSend.Click += new System.EventHandler(this.btnSend_Click);
			// 
			// txtSendMessage
			// 
			this.txtSendMessage.BackColor = System.Drawing.Color.MistyRose;
			this.txtSendMessage.ForeColor = System.Drawing.Color.Maroon;
			this.txtSendMessage.Location = new System.Drawing.Point(12, 184);
			this.txtSendMessage.Multiline = true;
			this.txtSendMessage.Name = "txtSendMessage";
			this.txtSendMessage.Size = new System.Drawing.Size(272, 48);
			this.txtSendMessage.TabIndex = 9;
			this.txtSendMessage.Text = "Hi!!";
			// 
			// txtMessage
			// 
			this.txtMessage.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(224)), ((System.Byte)(192)));
			this.txtMessage.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.txtMessage.ForeColor = System.Drawing.Color.Blue;
			this.txtMessage.Location = new System.Drawing.Point(12, 32);
			this.txtMessage.Multiline = true;
			this.txtMessage.Name = "txtMessage";
			this.txtMessage.ReadOnly = true;
			this.txtMessage.Size = new System.Drawing.Size(360, 136);
			this.txtMessage.TabIndex = 8;
			this.txtMessage.Text = "/**********WEL-COME TO PRIVATE  CHAT ROOM ****************/";
			// 
			// PrivateChat
			// 
			this.AcceptButton = this.btnSend;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(255)), ((System.Byte)(192)));
			this.ClientSize = new System.Drawing.Size(416, 333);
			this.Controls.Add(this.grpPrivateChat);
			this.Name = "PrivateChat";
			this.Text = "PrivateChat";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.PrivateChat_Closing);
			this.Load += new System.EventHandler(this.PrivateChat_Load);			
			this.grpPrivateChat.ResumeLayout(false);
			this.ResumeLayout(false);
		}
		#endregion

		private bool StartTcpServer()
		{
			bool result = false;
			try
			{
				BinaryClientFormatterSinkProvider bcfs = new BinaryClientFormatterSinkProvider();
				BinaryServerFormatterSinkProvider bsfs = new BinaryServerFormatterSinkProvider();
				bsfs.TypeFilterLevel = TypeFilterLevel.Full;

				IDictionary id = new Hashtable();
				id = new Hashtable();
				id["port"] = 0;
				id["typeFilterLevel"] = TypeFilterLevel.Full;
				id["name"] = System.Guid.NewGuid().ToString();

				TcpChannel tcc = new TcpChannel(id, bcfs, bsfs);
				ChannelServices.RegisterChannel(tcc);
				this.im = (IMediator) Activator.GetObject(typeof(IMediator), this.tcpServerUrl);
				result = true;
			}
			catch (RemotingException ex)
			{
				MessageBox.Show(ex.Message + " Stact trace: " + ex.StackTrace);
			}
			finally
			{
			}
			return result;
		}

		public void em_GetMessageFromOthersHandler(IClientImplement ici)
		{			
			this.iciClient = ici;
			if (this.iciClient.ReceiverName.CompareTo(this.myName) == 0 ||
				this.iciClient.UserName.CompareTo(this.myName) == 0)
			{
				Thread th = new Thread(new ThreadStart(this.GetMessageFromOtherClients));
				th.Start();
			}
		}

		private void GetMessageFromOtherClients()
		{
			this.txtMessage.AppendText(Environment.NewLine);
			this.txtMessage.AppendText(this.iciClient.UserName + " says: " + iciClient.Message);
		}

		private void btnSend_Click(object sender, System.EventArgs e)
		{
			try
			{
				if (this.em == null)
				{
					this.StartTcpServer();
					this.em = new EventsClass();
					this.em.ReceiverName = this.callerName;
					this.em.UserName = this.myName;
					this.em.UserName = this.myName + "|" + this.callerName;
					this.em.ReceiverName = this.callerName;
					this.im.ConnectToPrivateChat(this.em);
					this.em.GetMessageFromOthersHandler += new GetMessageFromOthers(this.em_GetMessageFromOthersHandler);					
				}				
				Thread th = new Thread(new ThreadStart(this.SendMessage));
				th.Start();
			}
			catch (Exception ex)
			{
				MessageBox.Show("Exception occured in btnSend_Click. Error: " + ex.Message);
			}
		}
        
		private void SendMessage()
		{
			try
			{
				if (this.em == null)
				{
					throw new ApplicationException("Client object null.");
				}
				this.em.Message = this.txtSendMessage.Text;
				this.em.ReceiverName = this.callerName;
				this.em.UserName = this.myName + "|" + this.callerName;
				if (this.im == null)
				{
					throw new ApplicationException("Remote proxy not set.");
				}
				else
				{
					this.im.SendPrivateMessage(this.em);
					this.txtSendMessage.Text = string.Empty;
				}
			}
			catch (Exception ex)
			{
				MessageBox.Show("Error occured in SendMessage: Message: " + ex.Message + " Statck trace: " + ex.StackTrace);
			}
		}

		private void PrivateChat_Load(object sender, System.EventArgs e)
		{
			this.grpPrivateChat.Text = this.myName + " is privately chatting with " + this.callerName;
			grpPrivateChat.BackColor = Color.LightSteelBlue;
		}		

		private void PrivateChat_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			if (UserLeft != null)
			{
				UserLeft(this.callerName);
			}
		}
	}
}