/*
    This toggles betweeen label and input text control... 
    
    usage: $("input").EVOTextbox(); //this will find and apply evotextbox to all elements of type input!
*/
jQuery.fn.EVOTextbox=EVOTextboxCreator;

function EVOTextboxCreator() {
    var textboxes = new Array();
	for(var i=0; i < this.length; i++) 
	{
		textboxes[i] = new Textbox(this[i]);
	}
	return(textboxes);
}

function Textbox(inputElement)
{
    this._InputElement = inputElement;
    this._LabelDiv = null;
    this._OriginalValue = "";
    this._ValueChanged = false;
	this._DefaultBlankValue = "&nbsp;&nbsp;&nbsp;";
    
    /*--------- Public Instance Methods ----------*/
    this.set_Value = function(value)
    {
        if(this._OriginalValue.length > 0)
        {
            if(this._OriginalValue != value) this._ValueChanged = true;
            else this._ValueChanged = false;
        }
        else
        {
           this._OriginalValue = value;
        }
        this._InputElement.value = value;
    }

	this.set_DefaultBlankValue = function(value)
    {
        this._DefaultBlankValue = value;
    }
    
    this.get_Value = function()
    {
        return this._InputElement.value;
    }
    
    this.HasValueChanged = function()
    {
        return this._ValueChanged;
    }
    
    /*--------- End Of Public Instance Methods ----------*/
    
    /*--------- Private Methods ----------*/
    this._DisplayLabel = function()
    {
        $(this._InputElement).hide();
		if(this.get_Value() == "") $(this._LabelDiv).empty().html(this._DefaultBlankValue);
		else $(this._LabelDiv).empty().html(this.get_Value());
        $(this._LabelDiv).show();
    }
    
    this._DisplayInput = function()
    {
        $(this._LabelDiv).hide();
        $(this._InputElement).show().focus().trigger('click');
    }

    this._Init = function()
    {
        var myself = this;
		myself.set_Value(myself._InputElement.value);

		//create label object and add before our input... 
        var text = document.createElement("div");
        text.setAttribute("id", "evotxt_" + myself._InputElement.id);
        //text.style.width = myself._InputElement.offsetWidth + "px";
        $(text).html($(myself._InputElement).val()).addClass("EVOTextbox_Label");
        myself._LabelDiv = text;
        $(myself._InputElement).before(text);
        $(text).width($(myself._InputElement).width());

		//event handling... 
        $(myself._LabelDiv).click(
            function()
            {
                myself._DisplayInput();
            }
        );
        
        $(myself._InputElement).blur(
            function()
            {
				myself.set_Value(myself._InputElement.value);
                myself._DisplayLabel();
            }
        );

        myself._DisplayLabel();
    }
    /*--------- End Of Private Methods ----------*/

    this._Init();
}