/**
 * AutoComplete Field - JavaScript Code
 *
 * This is a sample source code provided by fromvega.
 * Search for the complete article at http://www.fromvega.com
 *
 * Enjoy!
 *
 * @author fromvega
 *
 */

// global variables
var acListTotal   =  0;
var acListCurrent = -1;
var acDelay		  = 200;
var acURL		  = null;
var acSearchId	  = null;
var acResultsId	  = null;
var acSearchField = null;
var acResultsDiv  = null;
var cname=new Array();
var hcount=new Array();
var cid=new Array();

function setAutoComplete(field_id, results_id, get_url){

	// initialize vars
	acSearchId  = "#" + field_id;
	acResultsId = "#" + results_id;
	acURL 		= get_url;

	// create the results div
	$("div#rs_sbh_form_box").append('<div id="' + results_id + '"></div>');

	// register mostly used vars
	acSearchField	= $(acSearchId);
	acResultsDiv	= $(acResultsId);
	
	// on blur listener
	acSearchField.blur(function(){ setTimeout("clearAutoComplete()", 200) });

	// on key up listener
	acSearchField.keyup(function (e) {

		// get keyCode (window.event is for IE)
		var keyCode = e.keyCode || window.event.keyCode;
		var lastVal = acSearchField.val();

		// check an treat up and down arrows
		if(updownArrow(keyCode)){
			return;
		}

		// check for an ENTER or ESC
		if(keyCode == 13 || keyCode == 27){
			clearAutoComplete();
			return;
		}

		// if is text, call with delay
		setTimeout(function () {autoComplete(lastVal)}, acDelay);
	});
	
}

// treat the auto-complete action (delayed function)
function autoComplete(lastValue)
{
	// get the field value
	var part = acSearchField.val();

	// if it's empty clear the resuts box and return
	if(part == ''){
		clearAutoComplete();
		return;
	}

	// if it's equal the value from the time of the call, allow
	if(lastValue != part){
		return;
	}

	// get remote data as JSON
	$.getJSON(acURL + part, function(json){

		// get the total of results
		var ansLength = acListTotal = json.length;
		
		// if there are results populate the results div
		if(ansLength > 0){

			var newData = '';

			// create a div for each result
			for(i=0; i < ansLength; i++) {
				var exp_json=json[i].split("^");
				newData += '<div class="unselected" id="div_'+i+'"><p>' + exp_json[0] + '</p><p class="ac_results_p">' + exp_json[1] + '</p></div>';
				cname[i]=exp_json[0];
				hcount[i]=exp_json[1];
				cid[i]=exp_json[2];
			}

			// update the results div
			acResultsDiv.html(newData);
			acResultsDiv.css("display","block");
			
			// for all divs in results
			var divs = $(acResultsId + " > div");
			
			
			// on mouse over clean previous selected and set a new one
			divs.mouseover( function() {
				divs.each(function(){ this.className = "unselected"; });
				this.className = "selected";
			})
		
			// on click copy the result text to the search field and hide
			divs.click( function() {
				var exp_id=this.id.split('_');
				acSearchField.val(cname[exp_id[1]]);
				gi("cityid").value=cid[exp_id[1]];
				clearAutoComplete();
			});

		} else {
			clearAutoComplete();
		}
	});
}

// clear auto complete box
function clearAutoComplete()
{
	acResultsDiv.html('');
	acResultsDiv.css("display","none");
}


// treat up and down key strokes defining the next selected element
function updownArrow(keyCode) {
	if(keyCode == 40 || keyCode == 38){

		if(keyCode == 38){ // keyUp
			if(acListCurrent == 0 || acListCurrent == -1){
				acListCurrent = acListTotal-1;
			}else{
				acListCurrent--;
			}
		} else { // keyDown
			if(acListCurrent == acListTotal-1){
				acListCurrent = 0;
			}else {
				acListCurrent++;
			}
		}

		// loop through each result div applying the correct style
		acResultsDiv.children().each(function(i){
			if(i == acListCurrent){
				var exp_id2=this.id.split('_');
				acSearchField.val(cname[exp_id2[1]]);
				gi("citychoice").value=cid[exp_id2[1]];
				this.className = "selected";
			} else {
				this.className = "unselected";
			}
		});

		return true;
	} else {
		// reset
		acListCurrent = -1;
		return false;
	}
}


$(document).ready(function() {
	
	
	$(function(){
	    var dblW = Math.floor(Math.random()*10);
	    
	    setAutoComplete("rs_city", "ac_results", "/inc/srch/dropdown.php?w=" + dblW + "&srch=");
	});
	var inp_val="- start typing -";
	if (gi("rs_city").value==inp_val) gi("rs_city").style.color="#999";
	$('input#rs_city').focus(function() {
		if (gi(this.id).value==inp_val){
			gi(this.id).value="";
			gi(this.id).style.color="#000";
		}
	});
	
});