// Scripts used by Login Portlet


// *********************************************************************************  
function login_portlet_trim(s) 
  {
  // Remove leading spaces and carriage returns  
  while((s.substring(0,1)==' ') || (s.substring(0,1)=='\n') || (s.substring(0,1)=='\r'))
    {
    s=s.substring(1,s.length);
    }

  // Remove trailing spaces and carriage returns
  while((s.substring(s.length-1,s.length)==' ') || (s.substring(s.length-1,s.length)=='\n') || (s.substring(s.length-1,s.length)=='\r'))
    {
    s=s.substring(0,s.length-1);
    }
    
  return s;
  }
  
// *********************************************************************************  
function login_portlet_select_option(list, id) 
  {
  if (list==null) return;
  
  var items=list.options.length;
  
  for(var j=0; j<items; j++)
    {
    if (list.options[j].value==id) list.options[j].selected=true;
    }
  }
  
// *********************************************************************************  
function login_portlet_check_form(confirm_message, document, input_form, categories_mandatory)
  {	
  
  var category_ticked=0;
  var num_categories=0;
  for (var i=0; i<input_form.elements.length; i++)
     {
     
     var form_element=input_form.elements[i];
     var value=form_element.value;
     var comment=form_element.getAttribute("comment");
     
     if (value==null)   value="";
     if (comment==null) comment=form_element.name;
     
     if ((form_element.getAttribute("mandatory")!=null) && (form_element.getAttribute("mandatory")=="1") && (value=="")) 
     	{
        alert("WARNING! Field '"+comment+"' is mandatory");
        return false;
        }
     
     if ((form_element.getAttribute("validation")!=null) && (!((form_element.getAttribute("mandatory")==null) && (form_element.getAttribute("mandatory")=="1") && (value==""))))
        {        	
        if ((form_element.getAttribute("validation")=="numeric") && (isNaN(value)))
           {
           alert("WARNING! Field '"+comment+"' must be numeric");
           return false;
           }        
	}

     if ((form_element.getAttribute("minnumericvalue")!=null) && (!((form_element.getAttribute("mandatory")==null) && (form_element.getAttribute("mandatory")=="1") && (value==""))))
        {        
        var x=parseFloat(form_element.value);
        var y=parseFloat(form_element.getAttribute("minnumericvalue"));
        
        if (x<y)
           {
           alert("WARNING! Field '"+comment+"' must be greater or equal than '"+y+"'");
           return false;           	
           }        
	}

     if ((form_element.getAttribute("maxnumericvalue")!=null) && (!((form_element.getAttribute("mandatory")==null) && (form_element.getAttribute("mandatory")=="1") && (value==""))))
        {    
	var x=parseFloat(form_element.value);
        var y=parseFloat(form_element.getAttribute("maxnumericvalue"));
                	    	
        if (x>y)
           {
           alert("WARNING! Field '"+comment+"' must be lesser or equal than '"+y+"'");
           return false           	
           }        
	}
      
      if((categories_mandatory=="1") && (form_element.name.substring(0,8).toLowerCase()=="category"))
       {      
        num_categories++;
        if(document.getElementById(form_element.name).checked) category_ticked=1;
       }
     }		
	
  if((categories_mandatory=="1") && (num_categories>0) && (category_ticked==0))
   {
    alert("WARNING! Some category ticked is required");
    return false;
   }
  if (confirm_message!=null && confirm_message!="") if (!confirm(confirm_message)) return false;	
  
  return true;
  }

// *********************************************************************************  
function login_portlet_show_calendar(str_target, str_datetime, input_form) {
	var arr_months = ["January", "February", "March", "April", "May", "June",
		"July", "August", "September", "October", "November", "December"];
	var week_days = ["SU", "MO", "TU", "WE", "TH", "FR", "SA"];
	var n_weekstart = 1; // day week starts from (normally 0 or 1)

	var dt_datetime = (str_datetime == null || str_datetime =="" ?  new Date() : str2dt4(str_datetime));
	var dt_prev_month = new Date(dt_datetime);
	dt_prev_month.setMonth(dt_datetime.getMonth()-1);
	if (dt_datetime.getMonth()%12 != (dt_prev_month.getMonth()+1)%12) {
		dt_prev_month.setMonth(dt_datetime.getMonth());
		dt_prev_month.setDate(0);
	}
	var dt_next_month = new Date(dt_datetime);
	dt_next_month.setMonth(dt_datetime.getMonth()+1);
	if ((dt_datetime.getMonth() + 1)%12 != dt_next_month.getMonth()%12)
		dt_next_month.setDate(0);

	var dt_firstday = new Date(dt_datetime);
	dt_firstday.setDate(1);
	dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7);
	var dt_lastday = new Date(dt_next_month);
	dt_lastday.setDate(0);

	// html generation (feel free to tune it for your particular application)
	// print calendar header
	var css=document.styleSheets[0].href;

	var base=document.getElementsByTagName("base");

	var str_buffer = new String (
		"<html>\n"+
		"<head>\n"+
		"	<title>Calendar</title>\n"+
		"<base href='"+base[0].href+"' />"+
		"<link rel='stylesheet' href='"+css+"' type='text/css' />" +
		"</head>\n"+
		"<script>function show_year(year,datetime)"+"{if((!isNaN(year))&&(!(year==\"\"))) window.opener.login_portlet_show_calendar(datetime,\"1/1/\"+year, '"+input_form+"'); else window.alert(\"ERROR: Introduzca un año válido\")}</script>\n"+
		"<body class=\"body-default\">\n"+
		"<p align='center'><font color=\"#FFFFFF\">Year </font><input type=\"hidden\" name=\"strdate\" value="+str_target+">"+
		"<input type=\"text\"  name=\"year\" size=\"1\" maxlength=\"4\" class='portlet-form-input-field' title='Write Year'>"+
		"&nbsp;&nbsp;&nbsp;<input type=\"button\" value=\"buscar\" class='portlet-form-button' title='Pulse para buscar su año' name=\"Buscar\" onClick=\"show_year(document.getElementById('year').value,document.getElementById('strdate').value)\"></p>\n"+
		"<table cellspacing=\"7\" border=\"0\" width=\"100%\">\n"+
		"<tr><td class=\"portlet-section-body\">\n"+
		"<table cellspacing=\"2\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
		"<tr>\n	<td ><a href=\"javascript:window.opener.login_portlet_show_calendar('"+
		str_target+"', '"+ dt2dtstr4(dt_prev_month)+"', '"+input_form+"');\">"+
		"<img src=\"portlet-apps/LoginPortlet/prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
		" alt=\"Previous month\"></a></td>\n"+
		"	<td colspan=\"5\" align=\"center\">"+
		"<font class=\"portlet-section-header\">"
		+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
		"	<td align=\"right\"><a href=\"javascript:window.opener.login_portlet_show_calendar('"
		+str_target+"', '"+dt2dtstr4(dt_next_month)+"', '"+input_form+"');\">"+
		"<img src=\"portlet-apps/LoginPortlet/next.gif\" width=\"16\" height=\"16\" border=\"0\""+
		" alt=\"Next month\"></a></td>\n</tr>\n"
	);
	
	var dt_current_day = new Date(dt_firstday);
	// print weekdays titles
	str_buffer += "<tr>\n";
	for (var n=0; n<7; n++)
		str_buffer += "	<td bgcolor=\"#6ABF83\" align=\"center\">"+
		"<font class=\"portlet-section-subheader\">"+
		week_days[(n_weekstart+n)%7]+"</font></td>\n";
	// print calendar table
	str_buffer += "</tr>\n";
	while (dt_current_day.getMonth() == dt_datetime.getMonth() ||
		dt_current_day.getMonth() == dt_firstday.getMonth()) {
		// print row heder
		str_buffer += "<tr>\n";
		for (var n_current_wday=0; n_current_wday<7; n_current_wday++) {
				if (dt_current_day.getDate() == dt_datetime.getDate() &&
					dt_current_day.getMonth() == dt_datetime.getMonth())
					// print current date
					str_buffer += "	<td style=\"border-style:solid; border-width:1; border-color:#666666;\" bgcolor=\"#FFB6C1\" align=\"right\">";
				else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
					// weekend days
					str_buffer += "	<td style=\"border-style:solid; border-width:1; border-color:#666666;\"  bgcolor=\"#EFF1AC\" align=\"right\">";
				else
					// print working days of current month
					str_buffer += "	<td style=\"border-style:solid; border-width:1; border-color:#666666;\" bgcolor=\"white\" align=\"right\">";

				if (dt_current_day.getMonth() == dt_datetime.getMonth())
					// print days of current month
					str_buffer += "<a href=\"javascript:window.opener."+input_form+"."+str_target+
					".value='"+dt2dtstr4(dt_current_day)+"'; window.close();\">"+
					"<font class=\"portlet-font\" style=\"text-decoration:none\">";
				else
					// print days of other months
					str_buffer += "<a href=\"javascript:window.opener."+input_form+"."+str_target+
					".value='"+dt2dtstr4(dt_current_day)+"'; window.close();\">"+
					"<font class=\"portlet-font-dim\" style=\"color:#999999; text-decoration:none\">";
				str_buffer += dt_current_day.getDate()+"</font></a></td>\n";
				dt_current_day.setDate(dt_current_day.getDate()+1);
		}
		// print row footer
		str_buffer += "</tr>\n";
	}
	// print calendar footer
	str_buffer +=
		"</table>\n" +
		"</tr>\n</td>\n</table>\n" +
		"</br>\n" +
		"<div align='center'><input type='button' name='delete' value='Delete Date' class='portlet-form-button' onClick='javascript:window.opener."+input_form+"."+str_target+".value=\"\";' title='Push to delete date' /></div>\n" +
		"</body>\n" +
		"</html>\n";

	var vWinCal = window.open("", "Calendar",
		"width=260,height=310,status=no,resizable=no,top=200,left=200");
	vWinCal.opener = self;
	vWinCal.focus();
	var calc_doc = vWinCal.document;
	calc_doc.write (str_buffer);
	calc_doc.close();
}
// datetime parsing and formatting routimes. modify them if you wish other datetime format
function str2dt4 (str_datetime) {
	var re_date = /^(\d+)\/(\d+)\/(\d+)$/;
	if (!re_date.exec(str_datetime))
		return alert("Invalid Datetime format: "+ str_datetime);
	return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1));
}
function dt2dtstr4 (dt_datetime) {
	return (new String (
             dt_datetime.getDate()+"/"+(dt_datetime.getMonth()+1)+"/"+dt_datetime.getFullYear()));
}