AJAX wrapper

JavaScript AJAX wrapper for Ajax calls

 
/* Jscript */

 
////  AJAX wrap
function AjaxWrapper()
{
    var object = this;

    object.Request = NewRequest();
    object.Request.onreadystatechange = CompleteRequest;

    this.Sync = true;
    this.Method = "GET";
    this.URL = "";
    this.WebServiceMethod = "";
    this.Parameters = new ParameterCollection();

    this.Execute = ExecuteRequest;
    this.AsyncCallbackMethod = null;

    this.ResultXML = null;
    this.ResultText = null;

    function NewRequest()
    {
        if (window.XMLHttpRequest)
            return new XMLHttpRequest();
        else
            return new ActiveXObject("Microsoft.XMLHTTP");
    }

    function ExecuteRequest()
    {
        var parameters = object.Parameters.toString();

        ResetRequest();

        if (this.Method.toUpperCase() == "POST")
        {
            if (object.WebServiceMethod.length > 0)
                object.Request.open(object.Method, object.URL + "/" + object.WebServiceMethod, !object.Sync);
            else
                object.Request.open(object.Method, object.URL, !object.Sync);

            object.Request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
            object.Request.send(object.Parameters);
        }
        else if (this.Method.toUpperCase() == "GET")
        {
            if (object.WebServiceMethod.length > 0 && parameters.length > 0)
                object.Request.open(object.Method, object.URL + "/" + object.WebServiceMethod + "?" + parameters, !object.Sync);
            else if (object.WebServiceMethod.length > 0)
                object.Request.open(object.Method, object.URL + "/" + object.WebServiceMethod, !object.Sync);
            else if (parametres.length > 0)
                object.Request.open(object.Method, object.URL + "?" + parameters, !object.Sync);
            else
                object.Request.open(object.Method, object.URL, !object.Sync);

            object.Request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
            object.Request.send();
        }
        else
        {
            throw "The method '" + this.Method.toUpperCase() + "' is not supported !";
        }

        if (object.Sync)
            FinishRequest(object.Request.responseText);
    }

    function CompleteRequest()
    {
        if (object.Request.readyState == 4)
        {
            if (object.Request.status == 200)
            {
                FinishRequest(object.Request.responseText);

                if (object.AsyncCallbackMethod != null)
                    object.AsyncCallbackMethod();
            }
        }
    }

    function ResetRequest()
    {
        object.Request = NewRequest();
        object.Request.onreadystatechange = CompleteRequest;
    }

    function FinishRequest(retourTexte)
    {
        var xmlDoc = new ActiveXObject("MSXML2.DOMDocument");

        object.ResultText = object.Request.responseText;

        try
        {
            xmlDoc.loadXML(object.Request.responseText);

            if (xmlDoc.parsed && xmlDoc.xml.length > 0)
                object.ResultXML = xmlDoc;
            else
                object.ResultXML = null;
        }
        catch (ex)
        {
            object.ResultXML = null;
        }
    }
}