using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.ServiceModel;

using System.ServiceModel.Channels;

using System.Diagnostics;

namespace SharpDisplayClient

{

    public partial class MainForm : Form

    {

        Client iClient;

        Callback iCallback;

        public MainForm()

        {

            InitializeComponent();

        }

        private void buttonSetText_Click(object sender, EventArgs e)

        {

            //iClient.SetText(0,"Top");

            //iClient.SetText(1, "Bottom");

            iClient.SetTexts(new string[] { iClient.Name, iClient.SessionId });

        }

        private void MainForm_Load(object sender, EventArgs e)

        {

            iCallback = new Callback(this);

            //Instance context is then managed by our client class

            InstanceContext instanceContext = new InstanceContext(iCallback);

            iClient = new Client(instanceContext);

            //Connect using unique name

            string name = DateTime.Now.ToString("MM/dd/yyyy hh:mm:ss.fff tt");

            iClient.Connect(name);

            //Text = Text + ": " + name;

            Text = Text + ": " + iClient.SessionId;

        }

        public delegate void CloseConnectionDelegate();

        public delegate void CloseDelegate();

        /// <summary>

        /// 

        /// </summary>

        public void CloseConnectionThreadSafe()

        {

            if (this.InvokeRequired)

            {

                //Not in the proper thread, invoke ourselves

                CloseConnectionDelegate d = new CloseConnectionDelegate(CloseConnectionThreadSafe);

                this.Invoke(d, new object[] { });

            }

            else

            {

                //We are in the proper thread

                if (IsClientReady())

                {

                    //iClient.Disconnect();

                    Trace.TraceInformation("Closing client: " + iClient.SessionId);

                    iClient.Close();

                    Trace.TraceInformation("Closed client: " + iClient.SessionId);

                }

                iClient = null;

                iCallback = null;

            }

        }

        /// <summary>

        /// 

        /// </summary>

        public void CloseThreadSafe()

        {

            if (this.InvokeRequired)

            {

                //Not in the proper thread, invoke ourselves

                CloseDelegate d = new CloseDelegate(CloseThreadSafe);

                this.Invoke(d, new object[] { });

            }

            else

            {

                //We are in the proper thread

                Close();

            }

        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)

        {

            if (IsClientReady()) //Could catch exception instead

            {

                iClient.Disconnect();

            }

            CloseConnectionThreadSafe();

        }

        public bool IsClientReady()

        {

            return (iClient != null && iClient.State == CommunicationState.Opened);

        }

    }

}