StephaneLenclud@123: //
StephaneLenclud@123: // Copyright (C) 2014-2015 Stéphane Lenclud.
StephaneLenclud@123: //
StephaneLenclud@123: // This file is part of SharpDisplayManager.
StephaneLenclud@123: //
StephaneLenclud@123: // SharpDisplayManager is free software: you can redistribute it and/or modify
StephaneLenclud@123: // it under the terms of the GNU General Public License as published by
StephaneLenclud@123: // the Free Software Foundation, either version 3 of the License, or
StephaneLenclud@123: // (at your option) any later version.
StephaneLenclud@123: //
StephaneLenclud@123: // SharpDisplayManager is distributed in the hope that it will be useful,
StephaneLenclud@123: // but WITHOUT ANY WARRANTY; without even the implied warranty of
StephaneLenclud@123: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
StephaneLenclud@123: // GNU General Public License for more details.
StephaneLenclud@123: //
StephaneLenclud@123: // You should have received a copy of the GNU General Public License
StephaneLenclud@123: // along with SharpDisplayManager.  If not, see <http://www.gnu.org/licenses/>.
StephaneLenclud@123: //
StephaneLenclud@123: 
StephaneLenclud@123: using System;
sl@20: using System.Collections.Generic;
sl@20: using System.Linq;
sl@20: using System.Text;
sl@20: using System.Threading.Tasks;
sl@20: using System.Windows.Forms;
sl@55: using SharpDisplay;
sl@20: using System.ServiceModel;
sl@20: using System.ServiceModel.Channels;
sl@20: 
sl@20: 
sl@20: namespace SharpDisplayClient
sl@20: {
sl@25:     /// <summary>
StephaneLenclud@138:     /// Client side Sharp Display callback implementation.
sl@25:     /// </summary>
sl@31:     [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
sl@55:     public class Callback : ICallback, IDisposable
sl@20:     {
sl@31:         private MainForm MainForm { get; set; }
sl@31: 
sl@31:         public Callback(MainForm aMainForm)
sl@31:         {
sl@31:             MainForm = aMainForm;
sl@31:         }
sl@31: 
StephaneLenclud@138:         /// <summary>
StephaneLenclud@138:         /// Not used I believe.
StephaneLenclud@138:         /// </summary>
sl@20:         public void OnConnected()
sl@20:         {
sl@20:             //Debug.Assert(Thread.CurrentThread.IsThreadPoolThread);
sl@20:             //Trace.WriteLine("Callback thread = " + Thread.CurrentThread.ManagedThreadId);
sl@20: 
sl@20:             MessageBox.Show("OnConnected()", "Client");
sl@20:         }
sl@20: 
sl@20: 
sl@32:         public void OnCloseOrder()
sl@20:         {
sl@20:             //Debug.Assert(Thread.CurrentThread.IsThreadPoolThread);
sl@20:             //Trace.WriteLine("Callback thread = " + Thread.CurrentThread.ManagedThreadId);
sl@20: 
sl@21:             //MessageBox.Show("OnServerClosing()", "Client");
sl@31:             MainForm.CloseConnectionThreadSafe();
sl@31:             MainForm.CloseThreadSafe();
sl@20:         }
sl@25: 
sl@25:         //From IDisposable
sl@25:         public void Dispose()
sl@25:         {
sl@25: 
sl@25:         }
sl@20:     }
sl@20: 
sl@20: 
sl@25:     /// <summary>
StephaneLenclud@138:     /// Client side implementation of our Sharp Display Service.
sl@25:     /// </summary>
sl@31:     [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
sl@55:     public class Client : DuplexClientBase<IService>
sl@20:     {
sl@30:         public string SessionId { get { return InnerChannel.SessionId; } }
sl@26: 
sl@57:         public Client(ICallback aCallback)
sl@57:             : base(new InstanceContext(aCallback), new NetTcpBinding(SecurityMode.None, true), new EndpointAddress("net.tcp://localhost:8001/DisplayService"))
sl@20:         { }
sl@20: 
sl@32:         public void SetName(string aClientName)
sl@20:         {
sl@32:             Channel.SetName(aClientName);
sl@26:         }
sl@26: 
sl@62:         public void SetLayout(TableLayout aLayout)
sl@62:         {
sl@62:             Channel.SetLayout(aLayout);
sl@62:         }
sl@62: 
sl@74:         public void SetField(DataField aField)
sl@20:         {
sl@74:             Channel.SetField(aField);
sl@20:         }
sl@20: 
sl@74:         public void SetFields(System.Collections.Generic.IList<DataField> aFields)
sl@20:         {
sl@74:             Channel.SetFields(aFields);
sl@67:         }
sl@67: 
sl@32:         public int ClientCount()
sl@32:         {
sl@32:             return Channel.ClientCount();
sl@32:         }
sl@57: 
sl@57:         public bool IsReady()
sl@57:         {
sl@74:             return State == CommunicationState.Opened || State == CommunicationState.Created;
sl@57:         }
sl@20:     }
sl@73: 
sl@73: 
sl@73:     /// <summary>
sl@78:     /// Handle connection with our Sharp Display Server.
sl@78:     /// If the connection is faulted it will attempt to restart it.
sl@73:     /// </summary>
sl@73:     public class DisplayClient
sl@73:     {
sl@78:         private Client iClient;
sl@78:         private Callback iCallback;
sl@78:         private bool resetingConnection = false;
sl@78: 
sl@73:         private MainForm MainForm { get; set; }
sl@73:         public string SessionId { get { return iClient.SessionId; } }
sl@74:         public string Name { get; private set; }
sl@74:         private TableLayout Layout { get; set; }
sl@74:         private System.Collections.Generic.IList<DataField> Fields { get; set; }
sl@74: 
sl@73: 
sl@73:         public DisplayClient(MainForm aMainForm)
sl@73:         {
sl@73:             MainForm = aMainForm;
sl@73:             Name = "";
sl@74:             Fields = new DataField[]{};
sl@73:         }
sl@73: 
sl@78:         /// <summary>
sl@78:         /// Initialize our server connection.
sl@78:         /// </summary>
sl@73:         public void Open()
sl@73:         {
sl@73:             iCallback = new Callback(MainForm);
sl@73:             iClient = new Client(iCallback);
sl@73:         }
sl@73: 
sl@78:         /// <summary>
sl@78:         /// Terminate our server connection.
sl@78:         /// </summary>
sl@73:         public void Close()
sl@73:         {
sl@73:             iClient.Close();
sl@73:             iClient = null;
sl@73:             iCallback.Dispose();
sl@73:             iCallback = null;
sl@73:         }
sl@73: 
sl@78:         /// <summary>
sl@78:         /// Tells whether a server connection is available.
sl@78:         /// </summary>
sl@78:         /// <returns>True if a server connection is available. False otherwise.</returns>
sl@73:         public bool IsReady()
sl@73:         {
sl@73:             return (iClient != null && iCallback != null && iClient.IsReady());
sl@73:         }
sl@73: 
sl@78:         /// <summary>
sl@78:         /// Check if our server connection is available and attempt reset it if it isn't.
sl@78:         /// This is notably dealing with timed out connections.
sl@78:         /// </summary>
sl@73:         public void CheckConnection()
sl@73:         {
sl@78:             if (!IsReady() && !resetingConnection)
sl@73:             {
sl@74:                 //Try to reconnect
sl@73:                 Open();
sl@74: 
sl@78:                 //Avoid stack overflow in case of persisting failure
sl@78:                 resetingConnection = true;
sl@78: 
sl@78:                 try
sl@74:                 {
sl@78:                     //On reconnect there is a bunch of properties we need to reset
sl@78:                     if (Name != "")
sl@78:                     {
sl@78:                         iClient.SetName(Name);
sl@78:                     }
sl@78: 
sl@78:                     SetLayout(Layout);
sl@80:                     iClient.SetFields(Fields);
sl@74:                 }
sl@78:                 finally
sl@78:                 {
sl@78:                     //Make sure our this state does not get out of sync
sl@78:                     resetingConnection = true;
sl@78:                 }
sl@73:             }
sl@73:         }
sl@73: 
StephaneLenclud@138:         /// <summary>
StephaneLenclud@138:         /// Set our client's name.
StephaneLenclud@138:         /// Client's name is typically user friendly.
StephaneLenclud@138:         /// It does not have to be unique.
StephaneLenclud@138:         /// </summary>
StephaneLenclud@138:         /// <param name="aClientName">Our client name.</param>
sl@73:         public void SetName(string aClientName)
sl@73:         {
sl@73:             Name = aClientName;
sl@73:             CheckConnection();
sl@73:             iClient.SetName(aClientName);
sl@73:         }
sl@73: 
StephaneLenclud@138:         /// <summary>
StephaneLenclud@138:         /// Set your client fields' layout.
StephaneLenclud@138:         /// </summary>
StephaneLenclud@138:         /// <param name="aLayout">The layout to apply for this client.</param>
sl@73:         public void SetLayout(TableLayout aLayout)
sl@73:         {
sl@74:             Layout = aLayout;
sl@73:             CheckConnection();
sl@73:             iClient.SetLayout(aLayout);
sl@73:         }
sl@73: 
sl@80:         /// <summary>
sl@80:         /// Set the specified field.
sl@80:         /// </summary>
sl@80:         /// <param name="aField"></param>
sl@80:         /// <returns>True if the specified field was set client side. False means you need to redefine all your fields using CreateFields.</returns>
sl@80:         public bool SetField(DataField aField)
sl@73:         {
sl@74:             int i = 0;
sl@80:             bool fieldFound = false;
sl@74:             foreach (DataField field in Fields)
sl@74:             {
sl@74:                 if (field.Index == aField.Index)
sl@74:                 {
sl@74:                     //Update our field then
sl@74:                     Fields[i] = aField;
sl@80:                     fieldFound = true;
sl@74:                     break;
sl@74:                 }
sl@74:                 i++;
sl@74:             }
sl@74: 
sl@80:             if (!fieldFound)
sl@80:             {
StephaneLenclud@138:                 //Field not found, make sure to use CreateFields first after setting your layout.
sl@80:                 return false;
sl@80:             }
sl@80: 
sl@73:             CheckConnection();
sl@74:             iClient.SetField(aField);
sl@80:             return true;
sl@73:         }
sl@73: 
sl@80:         /// <summary>
sl@80:         /// Use this function when updating existing fields.
sl@80:         /// </summary>
sl@80:         /// <param name="aFields"></param>
sl@80:         public bool SetFields(System.Collections.Generic.IList<DataField> aFields)
sl@80:         {
sl@80:             int fieldFoundCount = 0;
sl@80:             foreach (DataField fieldUpdate in aFields)
sl@80:             {
sl@80:                 int i = 0;
sl@80:                 foreach (DataField existingField in Fields)
sl@80:                 {
sl@80:                     if (existingField.Index == fieldUpdate.Index)
sl@80:                     {
sl@80:                         //Update our field then
sl@80:                         Fields[i] = fieldUpdate;
sl@80:                         fieldFoundCount++;
sl@80:                         //Move on to the next field
sl@80:                         break;
sl@80:                     }
sl@80:                     i++;
sl@80:                 }
sl@80:             }
sl@80: 
sl@80:             //
sl@80:             if (fieldFoundCount!=aFields.Count)
sl@80:             {
StephaneLenclud@138:                 //Field not found, make sure to use CreateFields first after setting your layout.
sl@80:                 return false;
sl@80:             }
sl@80: 
sl@80:             CheckConnection();
sl@80:             iClient.SetFields(aFields);
sl@80:             return true;
sl@80:         }
sl@80: 
sl@80:         /// <summary>
sl@80:         /// Use this function when creating your fields.
StephaneLenclud@138:         /// This must be done at least once after setting your layout.
sl@80:         /// </summary>
sl@80:         /// <param name="aFields"></param>
sl@80:         public void CreateFields(System.Collections.Generic.IList<DataField> aFields)
sl@73:         {
sl@74:             Fields = aFields;
sl@73:             CheckConnection();
sl@74:             iClient.SetFields(aFields);
sl@73:         }
sl@73: 
StephaneLenclud@138:         /// <summary>
StephaneLenclud@138:         /// Provide the number of clients currently connected to our server.
StephaneLenclud@138:         /// </summary>
StephaneLenclud@138:         /// <returns>Number of clients currently connected to our server.</returns>
sl@73:         public int ClientCount()
sl@73:         {
sl@73:             CheckConnection();
sl@73:             return iClient.ClientCount();
sl@73:         }
sl@73: 
sl@73: 
sl@73: 
sl@73:     }
sl@73: 
sl@73: 
sl@20: }