Weblabor

Class.create();
clsCrossForm.prototype = {

    initialize : function(formName,sourcePHP){
        
        //   initial checking     
        if (!window.XMLHttpRequest && !window.ActiveXObject ) return null;
        
        //            inic
        this.formName = formName;
        this.sourcePHP = sourcePHP;
        this.form = Form.getElements(formName);
        
        //        use my input field colorizer class, optionally
        new clsInputFieldColorizer(this.formName);
        //        set event handlers on the form elements
        this.form.each(
            function (formElem,index){
                new Form.Element.EventObserver(formElem,this.checkField.bind(this));
                // set the missing id attribs
                if (!formElem.id) formElem.id = this.formName+'__'+index;
            }.bind(this)
        );
    },

    checkField : function(formElem){

        this.currentField = formElem;

        switch (this.currentField.type){

            case 'checkbox' :

                var currentCheckBoxesCollection = $A(this.form).findAll(
                function(checkBox){
                  return (checkBox.name == this.currentField.name && checkBox.checked);
                }.bind(this));
    
                var queryString = currentCheckBoxesCollection.collect(
                function(checkBox){
                    var objectCheckBoxHash = function(name,value){this[name] = value;}
                    var checkBoxes = new objectCheckBoxHash(this.currentField.name,checkBox.value);
                    return $H(checkBoxes).toQueryString();
                }.bind(this)).join("&");

            break;

            default :  var queryString = Form.Element.serialize(this.currentField);
        }

        if (!queryString) queryString = this.currentField.name + '=';

        var myAjax = new Ajax.Request(
        this.sourcePHP,
        {
            method: 'post',
            parameters: queryString + '&cFormAjax=' + this.formName,
            onFailure : function(response) {alert("Faliure, there's some kind of error in ajax communication line");},
            onComplete: this.showResponse.bind(this)
        });
    },

    showResponse : function (transport,objectJSON){
        
        // if we've got some kind of error during error checking
        if (objectJSON.result)
        {
            var errorResultContainer =  Builder.node('div',{'id':'errorResultContainer'+objectJSON.id,'class':'errorMessages'});
            errorResultContainer.innerHTML = objectJSON.result;
        }
        else
        {
            var errorResultContainer =  Builder.node('div',{'id':'errorResultContainer'+objectJSON.id,'class':'errorPic errorNo'});
        }
        
        // looking for the actual label tag, put the error div before it
        var searchLabelTag = $(this.currentField.id);
        while (searchLabelTag.tagName!='LABEL')
        {
            searchLabelTag = searchLabelTag.previousSibling || searchLabelTag.parentNode;
        }
        // if we find an exists one, remove it
        if (searchLabelTag.previousSibling.className="errorMessages")
        {
            Element.remove(searchLabelTag.previousSibling);
        }
        searchLabelTag.parentNode.insertBefore(errorResultContainer,searchLabelTag);
    }
}