WhatsApp Desktop Client Code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;

public static class WhatsEventHandler
{
    #region Delegates
    public delegate void MessageRecievedHandler(FMessage mess);
    public delegate void StringArrayHandler(string[] value);
    public delegate void BoolHandler(string from, bool value);
    public delegate void PhotoChangedHandler(string from, string uJid, string photoId);
    public delegate void GroupNewSubjectHandler(string from, string uJid, string subject, int t);

    #endregion

    #region Events
    public static event MessageRecievedHandler MessageRecievedEvent;
    public static event BoolHandler IsTypingEvent;
    public static event GroupNewSubjectHandler GroupNewSubjectEvent;
    public static event PhotoChangedHandler PhotoChangedEvent;

    #endregion

    #region OnMethods
    internal static void OnMessageRecievedEventHandler(FMessage mess)
    {
        var h = MessageRecievedEvent;
        if (h == null)
            return;
        foreach (var tmpSingleCast in h.GetInvocationList())
        {
            var tmpSyncInvoke = tmpSingleCast.Target as ISynchronizeInvoke;
            if (tmpSyncInvoke != null && tmpSyncInvoke.InvokeRequired)
            {
                tmpSyncInvoke.BeginInvoke(tmpSingleCast, new object[] { mess });
                continue;
            }
            h.BeginInvoke(mess, null, null);
        }
    }

    internal static void OnPhotoChangedEventHandler(FMessage mess)
    {
        var h = MessageRecievedEvent;
        if (h == null)
            return;
        foreach (var tmpSingleCast in h.GetInvocationList())
        {
            var tmpSyncInvoke = tmpSingleCast.Target as ISynchronizeInvoke;
            if (tmpSyncInvoke != null && tmpSyncInvoke.InvokeRequired)
            {
                tmpSyncInvoke.BeginInvoke(tmpSingleCast, new object[] { mess });
                continue;
            }
            h.BeginInvoke(mess, null, null);
        }
    }

    internal static void OnIsTypingEventHandler(string from, bool isTyping)
    {
        var h = IsTypingEvent;
        if (h == null)
            return;
        foreach (var tmpSingleCast in h.GetInvocationList())
        {
            var tmpSyncInvoke = tmpSingleCast.Target as ISynchronizeInvoke;
            if (tmpSyncInvoke != null && tmpSyncInvoke.InvokeRequired)
            {
                tmpSyncInvoke.BeginInvoke(tmpSingleCast, new object[] { from, isTyping });
                continue;
            }
            h.BeginInvoke(from, isTyping, null, null);
        }
    }

    internal static void OnGroupNewSubjectEventHandler(string from, string uJid, string subject, int t)
    {
        var h = GroupNewSubjectEvent;
        if (h == null)
            return;
        foreach (var tmpSingleCast in h.GetInvocationList())
        {
            var tmpSyncInvoke = tmpSingleCast.Target as ISynchronizeInvoke;
            if (tmpSyncInvoke != null && tmpSyncInvoke.InvokeRequired)
            {
                tmpSyncInvoke.BeginInvoke(tmpSingleCast, new object[] { from, uJid, subject, t });
                continue;
            }
            h.BeginInvoke(from, uJid, subject, t, null, null);
        }
    }

    internal static void OnPhotoChangedEventHandler(string from, string uJid, string photoId)
    {
        var h = PhotoChangedEvent;
        if (h == null)
            return;
        foreach (var tmpSingleCast in h.GetInvocationList())
        {
            var tmpSyncInvoke = tmpSingleCast.Target as ISynchronizeInvoke;
            if (tmpSyncInvoke != null && tmpSyncInvoke.InvokeRequired)
            {
                tmpSyncInvoke.BeginInvoke(tmpSingleCast, new object[] { from, uJid, photoId });
                continue;
            }
            h.BeginInvoke(from, uJid, photoId, null, null);
        }
    }


    #endregion
}