// (c) 2006 insign gmbh - http://www.insign.ch/
var pause = false;
var query = "";
var active_row = null;

function setSelectionRange(input, selectionStart, selectionEnd) {
    if (input.setSelectionRange) {
        input.focus();
        var prevalue = input.value;
        input.value += ' ';
        input.setSelectionRange(selectionStart, selectionEnd);
        input.value = prevalue;
    }
    else if (input.createTextRange) {
        var range = input.createTextRange();
        range.collapse(true);
        range.moveEnd('character', selectionEnd);
        range.moveStart('character', selectionStart);
        range.select();
    }
}

function setCaretToEnd (input) {
  setSelectionRange(input, input.value.length, input.value.length);
}

var completion_counter=0;
var typingTimer=null;
var myLanguage = 'de';

function autoComplete(searchfield, dontSetTimer)
{
	
	// intelligent timing routine, marko 20070327. reduces the amount of ajax requests considerably. only if one types slower than 500ms per char, more than one request get fired.
	if(typingTimer) {
		clearTimeout(typingTimer);
		typingTimer=null;
	}
	
	if(!dontSetTimer) {
		if(!typingTimer) {
			typingTimer=setTimeout("autoComplete('" + searchfield + "', true);",500);
			return;
		}
	}
    var temp = $(searchfield);
    query = temp.value;
	if(query.length==0) { // don't fire ajax if the string is empty, marko 20070327
		$('search_auto_complete').style.display="none";
		return;
	}
	
	
	active_row = null;
	++completion_counter;
	// completion counter is needed so that if more requests are fired (which is unprobable enough), only the latest gets evaluated. marko 20070312
	var old_completion_counter=completion_counter; // seems senseless maybe (because of the if(completion_counter==old_completion_counter) below, but do not change that. one var is local, the other not, thats the difference.
	new Ajax.Request("search_auto_complete.php", { method: "get", parameters: "search=" + escape(query), onSuccess: function(ajaxRequest) { if(completion_counter==old_completion_counter) { autoComplete_handleSuccess(ajaxRequest, searchfield); } }, onFailure: autoComplete_handleFailure, asynchronous: true } );
}

function autoComplete_handleSuccess(ajaxRequest, searchfield)
{
   var hit = '';
   var about = '';
   if (myLanguage != 'fr') {
		hit = "Treffer";
		about = "ca.";
   } 
   else {
   		about = "env.";
		hit = "résultats";
   }
	
   	try {
        var completions = ajaxRequest.responseXML.getElementsByTagName('completion');
        var layer = $('search_auto_complete');		
        if (completions.length) {
            layer.style.display = "block";
			layer.innerHTML = "";
			var content = '<table width="100%" border="0" cellspacing="0" cellpadding="0">';            
            for (var i = 0; i < completions.length; i++) {
                var entry = completions[i].getElementsByTagName('entry')[0].childNodes[0].nodeValue;
                var count = completions[i].getElementsByTagName('count')[0].childNodes[0].nodeValue;
              	content += '<tr id="row' + i + '" onmouseover="autoComplete_highlight(' + i + ',\'' + searchfield + '\')" onclick="autoComplete_select(' + i + ', true, $('+searchfield+')); return false"><td id="entry' + i + '" class="autocompleteLeft">' + entry + '</td><td id="count' + i + '" class="autocompleteRight">' + about + '&nbsp;' + count + '&nbsp;' + hit + '</td></tr>';
            }
			content += '</table>';
			layer.innerHTML = content;
        }
        else {
            layer.style.display = "none";
        }
    }
    catch (ajaxException) {
        //alert('Ajax exception: ' + ajaxException.message);
    }
}

function autoComplete_handleFailure(ajaxRequest)
{
}

function autoComplete_select(row, close, field)
{
	field.previousvalue = $('entry' + row).innerHTML;
	field.value = field.previousvalue;

    if (close) {
        $('search_auto_complete').style.display = 'none';
        field.focus();
		// $('ad_search').submit(); // don't fire if klicked on an autocomplete item
    }
}

function autoComplete_highlight(row, searchfield)
{
    //alert(active_row);
    if($('search_auto_complete').style.display != 'none') {
        if(active_row != null) {
            $("entry" + active_row).className = 'autocompleteLeft';
            $("count" + active_row).className = 'autocompleteRight';
        }
        $("entry" + row).className = 'autocompleteLeftHover';
        $("count" + row).className = 'autocompleteRightHover';

        var field = $(searchfield);
        field.value = field.previousvalue = $("entry" + row).innerHTML;
        active_row = row;
        setCaretToEnd(field);
    }
}

function autoComplete_scroll(field, key, lang)
{
	myLanguage = lang;

	field.ffspecialhack = "yes";
    var active = active_row;

    if (!(key == 38 || key == 40)) {
        return;
    }

    if (38 == key) { // up
        if (active == 0 || active == null) {
            active = 9;
        } else {
            active -= 1;
        }
        autoComplete_highlight(active, field.id);
    }
    else if (40 == key) { // down
        if(active == 9 || active == null) {
            active = 0;
        } else {
            active += 1;
        }
        autoComplete_highlight(active, field.id);
    }
    
    setCaretToEnd(field);
    setTimeout('setCaretToEnd($("'+field.id+'"))', 20);
}

function findPosX(obj)
{
    var curleft = 0;
    if (obj.offsetParent)
    {
        while (obj.offsetParent)
        {
            curleft += obj.offsetLeft
            obj = obj.offsetParent;
        }
    }
    else if (obj.x)
        curleft += obj.x;
    return curleft;
}

function findPosY(obj)
{
    var curtop = 0;
    if (obj.offsetParent)
    {
        while (obj.offsetParent)
        {
            curtop += obj.offsetTop
            obj = obj.offsetParent;
        }
    }
    else if (obj.y)
        curtop += obj.y;
    return curtop;
}

function getElementPosition(element)
{
    var x=0,y=0;

    if (element.offsetParent)
    {
        while (element.offsetParent)
        {
            x += element.offsetLeft; // - element.scrollLeft;
            y += element.offsetTop; //  - element.scrollTop;
            element = element.offsetParent;
        }
    }
    else
    {
        if (element.x)
        {
            x += element.x;
        }
        
        if (element.y)
        {
            y += element.y;
        }
    }
    return {x:x,y:y};
}

//Event.observe(window, 'scroll', auto_complete_resize);
//Event.observe(window, 'resize', auto_complete_resize);
//Event.observe(window, 'load', auto_complete_resize);

/*
function auto_complete_resize(event)
{
    var el = $('search_search');
    if(el != null)
    {
        position  = getElementPosition(el);
        
        var autocompl = $('search_auto_complete');
        if (navigator.appName == 'Microsoft Internet Explorer') {
            autocompl.style.left = position.x + 3;
            autocompl.style.top = position.y + 20;
        }
        else {
            autocompl.style.left = position.x + 1;
            autocompl.style.top = position.y + 19;
        }
    }
}
*/