// *********************************************************************
// XMLHTTP
// *********************************************************************
/*
function file(fichier) {
	if(window.XMLHttpRequest) // FIREFOX
		xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject) // IE
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	else
		return(false);
	
	xhr_object.open("GET", fichier, false);
	xhr_object.send(null);
	if(xhr_object.readyState == 4) return(xhr_object.responseText);
	else return(false);
}
*/

getWS = function (req){
	jreq = new JSONscriptRequest(req);
	jreq.buildScriptTag();
	jreq.addScriptTag(); 
}


var objQ = document.getElementById('moteurrecherche');
var cache_q = ""; 
var rythm;
var highlighted = -1;

JSONscriptRequest = function (fullUrl) {
    this.fullUrl = fullUrl; 
    this.noCacheIE = '&noCacheIE=' + (new Date()).getTime();
    this.headLoc = document.getElementsByTagName("head").item(0);
    this.scriptId = 'JscriptId' + JSONscriptRequest.scriptCounter++;
}
JSONscriptRequest.scriptCounter = 1;
JSONscriptRequest.prototype.buildScriptTag = function () {
    this.scriptObj = document.createElement("script");
    this.scriptObj.setAttribute("type", "text/javascript");
    this.scriptObj.setAttribute("charset", "utf-8");
    this.scriptObj.setAttribute("src", this.fullUrl + this.noCacheIE);
    this.scriptObj.setAttribute("id", this.scriptId);
}
 
JSONscriptRequest.prototype.removeScriptTag = function () {
    this.headLoc.removeChild(this.scriptObj);  
}

JSONscriptRequest.prototype.addScriptTag = function () {
    this.headLoc.appendChild(this.scriptObj);
}


// *********************************************************************
// Recuperation d'une liste de suggestions
// *********************************************************************	
getSuggestions = function (q){
	var result = getWS('/websvc/search-suggestions.ws.php?q='+q+'&nocache='+Math.random());
	//moveDivSuggest();
}

startSuggest = function () { 
	rythm = setInterval("checkSuggest()",200);
}

submitSuggest = function (item) { 
	objQ.value = item.title == '' ? item.value:item.title;
	hideSuggest();
	//document.forms["search"].submit();
	var regPcent = new RegExp('\%', 'gi');
	var regEsp = new RegExp('\ ', 'gi');
	window.location.href = "/s/"+objQ.value.replace(regEsp,'+').replace(regPcent,'');
}

hideSuggest = function () { 
	clearInterval(rythm);
	$('#divautosuggest').css({'visibility':'hidden'});
}

checkSuggest = function () {
	if (cache_q == objQ.value) return false; 
	cache_q = objQ.value;
	getSuggestions(cache_q);
}

window.onresize = function(){
	//moveDivSuggest();
}
objQ.onkeydown = function (event){	
	var key =getKeyCode(event);
	
	var TAB = 9;
	var ESC = 27;
	var KEYUP = 38;
	var KEYDN = 40;
	var ENTER = 13;
	//if (key > 0) 
	clearInterval(rythm);
	
	switch(key)
	{
		case ENTER:
		submitSuggest(objQ);
		break;
		
		case TAB:
		hideSuggest();
		break;

		case ESC:
		hideSuggest();
		break;

		case KEYUP:
		highlighted--;
		changeHighlight();
		break;

		case KEYDN:
		highlighted++;
		changeHighlight();
		break;
		
		default:
		startSuggest();
		break;
	}	
}

changeHighlight = function (){
	var items = $('#divautosuggest').find('a');
	//alert(highlighted);
	if(highlighted >= items.length ) highlighted=0;
	if(highlighted < 0 ) highlighted=items.length-1;
	for (i in items)
	{
		var a = items[i];

		if (highlighted == i)
		{
			a.className = "selected";
			objQ.value = a.title;
			clearInterval(rythm);
		}
		else
		{
			a.className = "";
		}
	}
	
}

highlightSuggest = function(item){
	highlighted = item;
	var items = $('#divautosuggest').find('a');
	for (i in items)
	{
		var a = items[i];

		if (highlighted == i)
		{
			a.className = "selected";
		}
		else
		{
			a.className = "";
		}
	}
}
	
getKeyCode = function (e){
	if(window.event) // IE
	{
		return window.event.keyCode;
	}
	else if(e.which) // Netscape/Firefox/Opera
	{
		return e.which;
	}
}