// setTimeout holder for the loading dots (...)
var demLoading;

function dem_Vote(that)
{
            YAHOO.util.Connect.setForm(document.getElementById('enquete_form'));
            
            var votarSuccess = function(o){
                alert(o.responseText);
                new Ajax.Updater('output', '/enquete/resultado');
                Element.removeClassName('pergunta', 'current');
                Element.addClassName('resposta', 'current');
            };
            
            var votarFailure = function(o){
                alert('não foi possivel processar o seu voto');
                
            };
    
            YAHOO.util.Connect.asyncRequest('POST', '/enquete/votar/', 
                    {success: votarSuccess, failure: votarFailure});          
	

	return false;
}

function dem_addUncheck()
{
	oUL = this.parentNode.parentNode;
	lis = oUL.getElementsByTagName('li');
	
	els = lis[lis.length-1].childNodes;
	
	for (i = els.length-1; i >= 0; i--)
		if (els[i].nodeName.toLowerCase() == 'a')
			els[i].style.display = '';
		else
			els[i].parentNode.removeChild(els[i]);
		
			

	Inp = oUL.getElementsByTagName('input');
    for (i = 0; i < Inp.length; i++)
    {
        Inp[i].onclick = function () { return true };
    }

    return true;
}

function dem_addAnswer(that)
{
    allBoxes = that.parentNode.parentNode.getElementsByTagName('input');
    
    for (i = 0; i < allBoxes.length; i++)
    {
        allBoxes[i].onclick = dem_addUncheck;
		allBoxes[i].checked = false;
    }

	that.style.display = 'none';
	i1 = document.createElement('input');
	i1.type = 'radio';
	i1.value = 'newAnswer';
	i1.checked = true;
	
	i2 = document.createElement('input');
	i2.className = 'addAnswerText';
	
	that.parentNode.appendChild(i1);
	that.parentNode.appendChild(i2);	

	i2.focus();
    
    return false;
}

// very simple ajaxy loading visual
// adds 3 dots to link, then erase and start over
function dem_loadingDots() {
	
	isInput = this.nodeName.toLowerCase() == 'input';
	
	str = (isInput) ? this.value : this.innerHTML;

	if (str.substring(str.length-3) == '...')
		if (isInput)
			this.value     = str.substring(0, str.length-3);
		else
			this.innerHTML = str.substring(0, str.length-3);
	else
		if (isInput)
			this.value     += '.';
		else
			this.innerHTML += '.';
	
	demLoading = setTimeout(dem_loadingDots.bind(this), 200);
}

function dem_clearDots() {
	clearTimeout(demLoading);
}


function dem_getVotes(path, that)
{
	
	that.blur();
	demLoading = setTimeout(dem_loadingDots.bind(that), 50);

	dem_ajax.open("GET", path, true);
	dem_ajax.onreadystatechange = dem_displayVotes.bind(that.parentNode);
	dem_ajax.send(null);

    return false;
}

function dem_displayVotes ()
{
	
	if (dem_ajax.readyState != 4)
		return false;

	if (dem_ajax.status != 200)
	{
		alert('Error '+dem_ajax.status);
		return false;
	}
	
	clearTimeout(demLoading);
	this.innerHTML = dem_ajax.responseText;
}

function dem_getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}


dem_ajax = new dem_getHTTPObject();


/*  from prototype.js */
Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
}

var $A = Array.from = function(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0; i < iterable.length; i++)
      results.push(iterable[i]);
    return results;
  }
}