/***
@EjemploHTML:
<form method="post" action="/search/">

	<p>
		<label>
			Enter search terms<br />
			<input type="text" name="q" />
		</label> <input type="submit" value="Go" />
	</p>

</form>

@Ejemplo:

$.ajaxSetup({
    'beforeSend' : function(xhr) {
        xhr.overrideMimeType('text/html; charset=ISO-8859-1');
    }
});
jQuery('#jquery-live-search-example input[name="q"]').liveSearch({url: Router.urlForModule('SearchResults') + '&q='});
***/

var txtBuscado;

jQuery.fn.liveSearch = function (conf) {
	var config = jQuery.extend({
		url:			'/search-results.php?q=',
		id:				'jquery-live-search',
		duration:		400,
		typeDelay:		500,
		loadingClass:	'loading',
		onSlideUp:		function () {},
		uptadePosition:	false
	}, conf);


	var liveSearch	= jQuery('#' + config.id);


	// Create live-search if it doesn't exist
	if (!liveSearch.length) {
		liveSearch = jQuery('<div id="' + config.id + '"></div>')
						.appendTo(document.body)
						.hide()
						.slideUp(0);

		// Close live-search when clicking outside it
		jQuery(document.body).click(function(event) {
			var clicked = jQuery(event.target);

			if (!(clicked.is('#' + config.id) || clicked.parents('#' + config.id).length || clicked.is('input'))) {
				liveSearch.slideUp(config.duration, function () {
					config.onSlideUp();
				});
			}
		});
	}

	return this.each(function () {
		var input							= jQuery(this).attr('autocomplete', 'off');
		var liveSearchPaddingBorderHoriz	= parseInt(liveSearch.css('paddingLeft'), 10) + parseInt(liveSearch.css('paddingRight'), 10) + parseInt(liveSearch.css('borderLeftWidth'), 10) + parseInt(liveSearch.css('borderRightWidth'), 10);
		var myObj							= this;

		var getObjText =function (){
			return myObj;
		};


		// Re calculates live search's position
		var repositionLiveSearch = function () {
			var tmpOffset	= input.offset();
			var inputDim	= {
				left:		tmpOffset.left,
				top:		tmpOffset.top,
				width:		input.outerWidth(),
				height:		input.outerHeight()
			};

			inputDim.topPos		= inputDim.top + inputDim.height;
			inputDim.totalWidth	= inputDim.width - liveSearchPaddingBorderHoriz;

			liveSearch.css({
				position:	'absolute',
				left:		inputDim.left + 'px',
				top:		inputDim.topPos + 'px',
				width:		inputDim.totalWidth + 'px'
			});
		};

		// Shows live-search for this input
		var showLiveSearch = function () {
			// Always reposition the live-search every time it is shown
			// in case user has resized browser-window or zoomed in or whatever
			repositionLiveSearch();

			// We need to bind a resize-event every time live search is shown
			// so it resizes based on the correct input element
			$(window).unbind('resize', repositionLiveSearch);
			$(window).bind('resize', repositionLiveSearch);

			liveSearch.slideDown(config.duration);
		};

		// Hides live-search for this input
		var hideLiveSearch = function () {
			liveSearch.slideUp(config.duration, function () {
				config.onSlideUp();
			});
		};

		input
			// On focus, if the live-search is empty, perform an new search
			// If not, just slide it down. Only do this if there's something in the input
			.focus(function () {
				if (this.value !== '') {
					// Perform a new search if there are no search results
					if (liveSearch.html() == '') {
						this.lastValue = this.defaultValue;
						input.keyup();
					}
					// If there are search results show live search
					else {
						// HACK: In case search field changes width onfocus
						setTimeout(showLiveSearch, 1);
					}
				}
			})
			// Auto update live-search onkeyup
			.keyup(function (event) {

				//borramos el dato al escribir
				/*var objval=$('#' + this.name.replace("txt","grp"));
				if (objval.length>0)
					objval[0].value="";*/

				// Stop previous ajax-request
				if (this.timer) {
                                        input.removeClass(config.loadingClass);
					clearTimeout(this.timer);
				}


				// Don't update live-search if it's got the same value as last time
				if (this.value != this.lastValue && this.value.replace(" ","").length>0) {
					var q="";
					if (this.value=="*")
						q="";
					else
						q = this.value;
					input.addClass(config.loadingClass);


                                        txtBuscado=q;
					this.timer = setTimeout(function () {
							$.getJSON(config.url + q, function(data) {
								  var datos_html="";
								  var items= eval(data);
                                                                  if (items!=null){
                                                                    datos_html+="<ul>";
                                                                    for (var i=0;i<items.length;i++)
                                                                        datos_html+="<li><a href=\"#\" onclick=\"setAjaxValue('" + getObjText().name + "','" + items[i] + "')\">" + Remarcar(items[i], txtBuscado)  +"</a></li>";
                                                                    datos_html+="</ul>";
                                                                    if (datos_html.length>0) {
                                                                        liveSearch.html(datos_html);
                                                                       showLiveSearch();
                                                                    }
                                                                    else {
                                                                    hideLiveSearch();
                                                                    }
                                                                  }else{
                                                                  liveSearch.hide();
                                                                  }
                                                                  input.removeClass(config.loadingClass);

								})
							/*
							.complete(function() { alert("complete"); })
							.success(function() { alert("second success"); })
							.error(function() { alert("Ha ocurrido un error"); })*/
							;
					   },config.typeDelay);

				}else{
					if (liveSearch.html.length>0) {
						showLiveSearch();
					}
					else {
						hideLiveSearch();
					}
				}

				this.lastValue = this.value;
			}
			);
	});
};



//funcion encargada de establecer el valor al formulario
function setAjaxValue(objeto,name){
	var objtxt=$('#' + objeto);
	if (objtxt.length>0 ){
		objtxt[0].value=name;
		jQuery(document.body).click();
	}
}
//se encarga de poner en negrita el texto que se aconseja para diferenciarlo con el que inserto
function Remarcar(encontrado, origen){
  var aux=origen + "<strong>" + encontrado.substr(origen.length,encontrado.length) + "</strong>"
  return aux;
}