// Miscellaneous core Javascript functions for Moodle

function popupchecker(msg) {
    var testwindow = window.open('itestwin.html', '', 'width=1,height=1,left=0,top=0,scrollbars=no');
    if (testwindow == null)
        {alert(msg);}
    else {
        testwindow.close();
    }
}

/*
function popUpProperties(inobj) {
/// Legacy function
  var op = window.open();
  op.document.open('text/plain');
  for (objprop in inobj) {
    op.document.write(objprop + ' => ' + inobj[objprop] + '\n');
  }
  op.document.close();
}

function fillmessagebox(text) {
/// Legacy function
  document.form.message.value = text;
}

function copyrichtext(textname) {
/// Legacy stub for old editor - to be removed soon
  return true;
}
*/

function checkall() {
  var el = document.getElementsByTagName('input');
  for(var i=0; i<el.length; i++) {
    if(el[i].type == 'checkbox') {
      el[i].checked = true;
    }
  }
}

function checknone() {
  var el = document.getElementsByTagName('input');
  for(var i=0; i<el.length; i++) {
    if(el[i].type == 'checkbox') {
      el[i].checked = false;
    }
  }
}

function lockoptions(formid, master, subitems) {
  // Subitems is an array of names of sub items.
  // Optionally, each item in subitems may have a
  // companion hidden item in the form with the
  // same name but prefixed by "h".
  var form = document.forms[formid];

  if (eval("form."+master+".checked")) {
    for (i=0; i<subitems.length; i++) {
      unlockoption(form, subitems[i]);
    }
  } else {
    for (i=0; i<subitems.length; i++) {
      lockoption(form, subitems[i]);
    }
  }
  return(true);
}

function lockoption(form,item) {
  eval("form."+item+".disabled=true");/* IE thing */
  if(form.elements['h'+item]) {
    eval("form.h"+item+".value=1");
  }
}

function unlockoption(form,item) {
  eval("form."+item+".disabled=false");/* IE thing */
  if(form.elements['h'+item]) {
    eval("form.h"+item+".value=0");
  }
}


function lockoptionsall(formid) {
    var form = document.forms[formid];
    var dependons = eval(formid+'items');
    var tolock = Array();
    for (var dependon in dependons) {
        var master = form[dependon];
        if (master == undefined) {
            continue;
        }
        for (var condition in dependons[dependon]) {
            for (var value in dependons[dependon][condition]) {
                var lock;
                switch (condition) {
                  case 'notchecked':
                      lock = !master.checked; break;
                  case 'checked':
                      lock = master.checked; break;
                  case 'noitemselected':
                      lock = master.selectedIndex==-1; break;
                  case 'eq':
                      lock = master.value==value; break;
                  default:
                      lock = master.value!=value; break;
                }
                for (var ei in dependons[dependon][condition][value]) {
                    var eltolock = dependons[dependon][condition][value][ei];
                    if (tolock[eltolock] != null){
                        tolock[eltolock] =
                                lock || tolock[eltolock];
                    } else {
                        tolock[eltolock] = lock;
                    }
                }
            }
        }
    }
    for (var el in tolock){
        var formelement = form[el];
        if (formelement == undefined) {
            continue;
        }
        formelement.disabled = tolock[el];
    }
    return true;
}

function lockoptionsallsetup(formid) {
    var form = document.forms[formid];
    var dependons = eval(formid+'items');
    for (var dependon in dependons) {
        var master = form[dependon];
        if (master == undefined) {
            continue;
        }
        master.formid = formid;
        master.onclick  = function() {return lockoptionsall(this.formid);};
        master.onblur   = function() {return lockoptionsall(this.formid);};
        master.onchange = function() {return lockoptionsall(this.formid);};
    }
    for (var i = 0; i < form.elements.length; i++){
        var formelement = form.elements[i];
        if (formelement.type=='reset') {
            formelement.formid = formid;
            formelement.onclick  = function() {this.form.reset();return lockoptionsall(this.formid);};
            formelement.onblur   = function() {this.form.reset();return lockoptionsall(this.formid);};
            formelement.onchange = function() {this.form.reset();return lockoptionsall(this.formid);};
        }
    }
    return lockoptionsall(formid);
}


function submitFormById(id) {
    var theform = document.getElementById(id);
    if(!theform) {
        return false;
    }
    if(theform.tagName.toLowerCase() != 'form') {
        return false;
    }
    if(!theform.onsubmit || theform.onsubmit()) {
        return theform.submit();
    }
}

function select_all_in(elTagName, elClass, elId) {
    var inputs = document.getElementsByTagName('input');
    inputs = filterByParent(inputs, function(el) {return findParentNode(el, elTagName, elClass, elId);});
    for(var i = 0; i < inputs.length; ++i) {
        if(inputs[i].type == 'checkbox' || inputs[i].type == 'radio') {
            inputs[i].checked = 'checked';
        }
    }
}

function deselect_all_in(elTagName, elClass, elId) {
    var inputs = document.getElementsByTagName('INPUT');
    inputs = filterByParent(inputs, function(el) {return findParentNode(el, elTagName, elClass, elId);});
    for(var i = 0; i < inputs.length; ++i) {
        if(inputs[i].type == 'checkbox' || inputs[i].type == 'radio') {
            inputs[i].checked = '';
        }
    }
}

function confirm_if(expr, message) {
    if(!expr) {
        return true;
    }
    return confirm(message);
}


/*
    findParentNode (start, elementName, elementClass, elementID)

    Travels up the DOM hierarchy to find a parent element with the
    specified tag name, class, and id. All conditions must be met,
    but any can be ommitted. Returns the BODY element if no match
    found.
*/
function findParentNode(el, elName, elClass, elId) {
    while(el.nodeName.toUpperCase() != 'BODY') {
        if(
            (!elName || el.nodeName.toUpperCase() == elName) &&
            (!elClass || el.className.indexOf(elClass) != -1) &&
            (!elId || el.id == elId))
        {
            break;
        }
        el = el.parentNode;
    }
    return el;
}
/*
    findChildNode (start, elementName, elementClass, elementID)

    Travels down the DOM hierarchy to find all child elements with the
    specified tag name, class, and id. All conditions must be met,
    but any can be ommitted.
    Doesn't examine children of matches.
*/
function findChildNodes(start, tagName, elementClass, elementID, elementName) {
    var children = new Array();
    for (var i = 0; i < start.childNodes.length; i++) {
        var classfound = false;
        var child = start.childNodes[i];
        if((child.nodeType == 1) &&//element node type
                  (elementClass && (typeof(child.className)=='string'))){
            var childClasses = child.className.split(/\s+/);
            for (var childClassIndex in childClasses){
                if (childClasses[childClassIndex]==elementClass){
                    classfound = true;
                    break;
                }
            }
        }
        if(child.nodeType == 1) { //element node type
            if  ( (!tagName || child.nodeName == tagName) &&
                (!elementClass || classfound)&&
                (!elementID || child.id == elementID) &&
                (!elementName || child.name == elementName))
            {
                children = children.concat(child);
            } else {
                children = children.concat(findChildNodes(child, tagName, elementClass, elementID, elementName));
            }
        }
    }
    return children;
}
/*
    elementSetHide (elements, hide)

    Adds or removes the "hide" class for the specified elements depending on boolean hide.
*/
function elementShowAdvanced(elements, show) {
    for (var elementIndex in elements){
        element = elements[elementIndex];
        element.className = element.className.replace(new RegExp(' ?hide'), '')
        if(!show) {
            element.className += ' hide';
        }
    }
}

function showAdvancedOnClick(button, hidetext, showtext){
    var toSet=findChildNodes(button.form, null, 'advanced');
    var buttontext = '';
    if (button.form.elements['mform_showadvanced_last'].value == '0' ||  button.form.elements['mform_showadvanced_last'].value == '' ) {
        elementShowAdvanced(toSet, true);
        buttontext = hidetext;
        button.form.elements['mform_showadvanced_last'].value = '1';
    } else {
        elementShowAdvanced(toSet, false);
        buttontext = showtext;
        button.form.elements['mform_showadvanced_last'].value = '0';
    }
    var formelements = button.form.elements;
    for (var i in formelements){
        if (formelements[i] && formelements[i].name && (formelements[i].name=='mform_showadvanced')){
            formelements[i].value = buttontext;
        }
    }
    //never submit the form if js is enabled.
    return false;
}

function revealPassword(id) {
  var pw = document.getElementById(id);
  var chb = document.getElementById(id+'reveal');

  try {
    // first try IE way - it can not set name attribute later
    if (chb.checked) {
      var newpw = document.createElement('<input type="text" name="'+pw.name+'">');
    } else {
      var newpw = document.createElement('<input type="password" name="'+pw.name+'">');
    }
  } catch (e) {
    var newpw = document.createElement('input');
    newpw.setAttribute('name', pw.name);
    if (chb.checked) {
      newpw.setAttribute('type', 'text');
    } else {
      newpw.setAttribute('type', 'password');
    }
  }
  newpw.id = pw.id;
  newpw.size = pw.size;
  newpw.onblur = pw.onblur;
  newpw.onchange = pw.onchange;
  newpw.value = pw.value;
  pw.parentNode.replaceChild(newpw, pw);
}

/*
    elementToggleHide (element, elementFinder)

    If elementFinder is not provided, toggles the "hidden" class for the specified element.
    If elementFinder is provided, then the "hidden" class will be toggled for the object
    returned by the function call elementFinder(element).

    If persistent == true, also sets a cookie for this.
*/
function elementToggleHide(el, persistent, elementFinder) {
    if(!elementFinder) {
        var obj = el;
    }
    else {
        var obj = elementFinder(el);
    }
    if(obj.className.indexOf('hidden') == -1) {
        obj.className += ' hidden';
        var shown = 0;
    }
    else {
        obj.className = obj.className.replace(new RegExp(' ?hidden'), '')
        var shown = 1;
    }

    if(persistent == true) {
        new cookie('hide:' + obj.id, 1, (shown ? -1 : 356), '/').set();
    }
}


function elementCookieHide(id) {
    var obj  = document.getElementById(id);
    var cook = new cookie('hide:' + id).read();
    if(cook != null) {
        elementToggleHide(obj, false);
    }
}

function filterByParent(elCollection, parentFinder) {
    var filteredCollection = [];
    for(var i = 0; i < elCollection.length; ++i) {
        var findParent = parentFinder(elCollection[i]);
        if(findParent.nodeName != 'BODY') {
            filteredCollection.push(elCollection[i]);
        }
    }
    return filteredCollection;
}

/*
    All this is here just so that IE gets to handle oversized blocks
    in a visually pleasing manner. It does a browser detect. So sue me.
*/

function fix_column_widths() {
    var agt = navigator.userAgent.toLowerCase();
    if ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1)) {
        fix_column_width('left-column');
        fix_column_width('right-column');
    }
}

function fix_column_width(colName) {
    if(column = document.getElementById(colName)) {
        if(!column.offsetWidth) {
            setTimeout("fix_column_width('" + colName + "')", 20);
            return;
        }

        var width = 0;
        var nodes = column.childNodes;

        for(i = 0; i < nodes.length; ++i) {
            if(nodes[i].className.indexOf("sideblock") != -1 ) {
                if(width < nodes[i].offsetWidth) {
                    width = nodes[i].offsetWidth;
                }
            }
        }

        for(i = 0; i < nodes.length; ++i) {
            if(nodes[i].className.indexOf("sideblock") != -1 ) {
                nodes[i].style.width = width + 'px';
            }
        }
    }
}


/*
   Insert myValue at current cursor position
 */
function insertAtCursor(myField, myValue) {
    // IE support
    if (document.selection) {
        myField.focus();
        sel = document.selection.createRange();
        sel.text = myValue;
    }
    // Mozilla/Netscape support
    else if (myField.selectionStart || myField.selectionStart == '0') {
        var startPos = myField.selectionStart;
        var endPos = myField.selectionEnd;
        myField.value = myField.value.substring(0, startPos)
            + myValue + myField.value.substring(endPos, myField.value.length);
    } else {
        myField.value += myValue;
    }
}





/* FUNCION AGREGADA TEMPORALMENTE PARA AGREGACION DE RFE POR AJAX */
/* @autor Juan Manuel */

// JavaScript Document

/* Primero agregar las cabeceras, una funcion para hacer la gestion de la respuesta del servidor y un gestor de eventos */

function createREQ(){
	try {
		req = new XMLHttpRequest();
	} catch(err1){
		/* Algunas versiones de IE */
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(err2){
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(err3) {
				req = false;
			}			
		}
	}
	return req;
}

/* url: URL al que se llamara, query: Parametros, req: Instancia HTTPRequest*/
function requestGET(url, query, req){
	myRand = parseInt(Math.random()*999999999999);
	req.open("GET",url+'?'+query+'&rand='+myRand,true);
	req.send(null);
}
/* funcion request post */
function requestPOST(url, query,req){
	req.open("POST",url,true);
	req.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	req.send(query);
}

/*Funcion que debe de determinar si la peticion es POST o GET*/
/* Determina si la funcion es como texto o xml*/
/*
 * PARAM:
 * url
 * query: peticion
 * callback: la funcion con la que se realizara la respuesta
 * reqtype: Tipo de peticion (get-post)
 * getxml: Para determinar si es xml o no (1-0)
*/
function doAjax(url,query,callback,reqtype,getxml){
	//alert(url+"  "+callback+"  "+reqtype);
	var myreq = createREQ(); //Crear instancia del objeto XMLHTTPRequest
	/* Funcion que se estara ejecutando mientras carga */
	myreq.onreadystatechange = function() {
		if(myreq.readyState == 4) { // Si hay respuesta del servidor
			if(myreq.status == 200) { //Si la respuesta es ok
				/* Verificamos en tipo de respuesta */
				var item = myreq.responseText;// Por defaul la respuesta es como text
				if(getxml == 1){// si queremos respuesta cml
					item = myreq.responseXML; //crear instancia responseXML
				}
				/********************************/			
				doCallback(callback,item);//ejecutamos la funcion				
			}
		}
	}
	/* Verificamos el tipo de peticion */
	if(reqtype=='post'){
		requestPOST(url,query,myreq);
	} else {
		requestGET(url,query,myreq);
	}	
}

/* Identifica que funcion se va a llamar y que tipo de respuesta tendra */
function doCallback(callback,item){
		eval(callback+'(item)');
}

function prueba(url,query,callback,reqtype,getxml){
	alert(url+"  "+callback+"  "+reqtype);
}



/* FUNCIONES DE LLAMADO */

function recibir(rfe){
	//alert(rfe);
		document.getElementById("id_idnumber").value=rfe;
	}
     
	/*function generaRFE(paterno, materno, nombre, fecha){
		//alert(paterno+"  "+materno+"  "+nombre+"  "+fecha);
		if(paterno!=""&&materno!=""&&nombre!=""&&fecha!="")
			doAjax('genera_rfe.php','paterno='+paterno+'&materno='+materno+'&nombre='+nombre+"&fecha="+fecha,'recibir','post',0);
  }*/
	
	function generaRFE(paterno, materno, nombre, form, url){
		//alert(paterno+"  "+materno+"  "+nombre+"  "+fecha);
		groupName='aim';
	 selectIndex="day";
	 dia = undefined;
		if (groupName+'['+ selectIndex +']' in form) {
        obj = form[groupName+'['+ selectIndex +']']; 
    } else {
        obj = form[groupName+'['+ selectIndex +'][]']; 
    }
    if(obj.value<10) dia = "0"+obj.value; else dia = obj.value;
    
   selectIndex="month";
	 mes = undefined;
		if (groupName+'['+ selectIndex +']' in form) {
        obj = form[groupName+'['+ selectIndex +']']; 
    } else {
        obj = form[groupName+'['+ selectIndex +'][]']; 
    }
    if(obj.value<10) mes = "0"+obj.value; else mes = obj.value;
    
    selectIndex="year";
	 anio = undefined;
		if (groupName+'['+ selectIndex +']' in form) {
        anio = form[groupName+'['+ selectIndex +']']; 
    } else {
        anio = form[groupName+'['+ selectIndex +'][]']; 
    }
		//alert(dia+"/"+mes+"/"+anio.value);
		fecha = dia+"/"+mes+"/"+anio.value;
		//alert(fecha);
		if(paterno!=""&&nombre!=""&&fecha!=""){
            if(url == undefined)
                url = 'genera_rfe.php';
			doAjax(url,'paterno='+paterno+'&materno='+materno+'&nombre='+nombre+"&fecha="+fecha,'recibir','post',0);
        }
    }

function cargarEstados(tiposXML){
		//alert(tiposXML);
		select_tipos = document.getElementById("id_institution");
		select_tipos.options[0]=null;
		myOption = document.createElement("OPTION");
            myOption.text = "------Seleccionar------";
            myOption.value = -1;            
            select_tipos.options.add(myOption);
	if(tiposXML.childNodes.length>0){	
		ids = tiposXML.getElementsByTagName("value");
		tipos = tiposXML.getElementsByTagName("option");
		for(i=0;i<tipos.length;i++){
			id_tipo = ids[i].childNodes[0].nodeValue;
            tipo = tipos[i].childNodes[0].nodeValue;                        
            //document.getElementById("prueba").innerHTML += id_tipo+" - "+tipo+"<br/>";
            myOption = document.createElement("OPTION");
            myOption.text = tipo;
            myOption.value = id_tipo;
            
            select_tipos.options.add(myOption);
		}
	}		
}

function cargarZonas(tiposXML){
	//alert(tiposXML);
		select_tipos = document.getElementById("id_zona");
		select_tipos.options[0]=null;
		//myOption = document.createElement("OPTION");
      //      myOption.text = "------Seleccionar------";
        //    myOption.value = -1;            
    //select_tipos.options.add(myOption);
	if(tiposXML.childNodes.length>0){	
		ids = tiposXML.getElementsByTagName("value");
		tipos = tiposXML.getElementsByTagName("option");
		for(i=0;i<tipos.length;i++){
			id_tipo = ids[i].childNodes[0].nodeValue;
            tipo = tipos[i].childNodes[0].nodeValue;                        
            //document.getElementById("prueba").innerHTML += id_tipo+" - "+tipo+"<br/>";
            myOption = document.createElement("OPTION");
            myOption.text = tipo;
            myOption.value = id_tipo;
            
            select_tipos.options.add(myOption);
		}
	}		
}


function filtrarZona(id_estado,url,todas){
	select_tipos = document.getElementById("id_zona");
		 while (select_tipos.options.length ) {
                    select_tipos.options[0]=null;
                }
        myOption = document.createElement("OPTION");
            myOption.text = " - - - Cargando .." ;
            myOption.value = -1;            
            select_tipos.options.add(myOption);
    if(todas == undefined){
    	todas =0;
    }
		//while(select_tipos.options.length){ select_tipos.options.remove ;}
		doAjax(url,'id_instituto='+id_estado+'&todas='+todas,'cargarZonas','post',1);
}
	
	
	
	function filtrarPorPais(id_pais){
		select_tipos = document.getElementById("id_institution");
		 while (select_tipos.options.length ) {
                    select_tipos.options[0]=null;
                }
        myOption = document.createElement("OPTION");
            myOption.text = " - - - - - - Cargando .." ;
            myOption.value = -1;            
            select_tipos.options.add(myOption);
            
		//while(select_tipos.options.length){ select_tipos.options.remove ;}
		doAjax('filtro_ajax.php','id_pais='+id_pais,'cargarEstados','post',1);
	}

function asignarOrigen(form,url,asignarZona){
	 
	 groupName='location';
	 selectIndex=0;
	 select1 = undefined;
	 if (groupName+'['+ selectIndex +']' in form) {
        select1 = form[groupName+'['+ selectIndex +']']; 
    } else {
        select1 = form[groupName+'['+ selectIndex +'][]']; 
    }
    
    selectIndex=1;
	 select2 = undefined;
	 if (groupName+'['+ selectIndex +']' in form) {
        select2 = form[groupName+'['+ selectIndex +']']; 
    } else {
        select2 = form[groupName+'['+ selectIndex +'][]']; 
    }
    
    selectIndex=2;
	 select3 = undefined;
	 if (groupName+'['+ selectIndex +']' in form) {
        select3 = form[groupName+'['+ selectIndex +']']; 
    } else {
        select3 = form[groupName+'['+ selectIndex +'][]']; 
    }
	
	
	
		document.getElementById('institution').value=select1.value;
		document.getElementById('city').value=select2.value;
		document.getElementById('skype').value=select3.value;
		
		if(asignarZona!=1){
			if(document.getElementById("id_zona")!=null)
				filtrarZona(select1.value,url);
			if(document.getElementById("instituto")!=null)
				document.getElementById("instituto").value = select1.value;
		}
	
//	alert(document.getElementById('institution').value);
//	alert(document.getElementById('city').value);
//	alert(document.getElementById('skype').value);
	//alert(select.value);*/
}


// Fgalicia --> funcion para mostrar / ocultar bloques en seccion de informes AMEVYT

function mevytinformesmuestrabloque(op){
	value = op.options[op.selectedIndex].value;
	switch (value){
		case "1": 
			document.getElementById('courseBlock').style.display = "block";
			document.getElementById('plazaBlock').style.display = "none";
			document.getElementById('tutorBlock').style.display = "none";
			break;
		case "2":
			document.getElementById('courseBlock').style.display = "none";
			document.getElementById('plazaBlock').style.display = "none";
			document.getElementById('tutorBlock').style.display = "block";
			break;
		case "3":
			document.getElementById('courseBlock').style.display = "none";
			document.getElementById('plazaBlock').style.display = "block";
			document.getElementById('tutorBlock').style.display = "none";
			break;
	}
}