/*
 *  MindShareHDV, LLC
 *
 *  The following is the property of MindShareHDV, LLC.
 *  Copyright reserved June 2008
 *
 *
 *  FileName: calendarControl.js
 *  Handle the calendar menu
 */

function PositionInfo(object)
{
    // function in the objects

    this.getElementLeft = getElementLeft;
    this.getElementWidth = getElementWidth;
    this.getElementRight = getElementRight;	
    this.getElementTop = getElementTop;
    this.getElementHeight = getElementHeight;
    this.getElementBottom = getElementBottom;

    // private member data
    var p_elm = object;

    function getElementLeft()
	{
        var x = 0;
        var elm;
		
        if(typeof(p_elm) == "object")
		{
            elm = p_elm;
        } 
		else
		{
            elm = document.getElementById(p_elm);
        }
        while (elm != null)
		{
            x+= elm.offsetLeft;
            elm = elm.offsetParent;
        }
        return parseInt(x);
    }

    function getElementWidth()
	{
        var elm;
        if(typeof(p_elm) == "object")
		{
            elm = p_elm;
        }
		else
		{
            elm = document.getElementById(p_elm);
        }
        return parseInt(elm.offsetWidth);
    }

    function getElementRight()
	{
        return getElementLeft(p_elm) + getElementWidth(p_elm);
    }

    function getElementTop()
	{
        var y = 0;
        var elm;
        if(typeof(p_elm) == "object")
		{
            elm = p_elm;
        }
		else
		{
            elm = document.getElementById(p_elm);
        }
        while (elm != null)
		{
            y+= elm.offsetTop;
            elm = elm.offsetParent;
        }
        return parseInt(y);
    }

    function getElementHeight()
	{
        var elm;
        if(typeof(p_elm) == "object")
		{
            elm = p_elm;
        }
		else
		{
            elm = document.getElementById(p_elm);
        }
        return parseInt(elm.offsetHeight);
    }

    function getElementBottom()
	{
        return getElementTop(p_elm) + getElementHeight(p_elm);
    }
}



function CalendarControl() {

    var calendarId = 'CalendarControl';
    var currentYear = 0;
    var currentMonth = 0;
    var currentDay = 0;

    var selectedYear = 0;
    var selectedMonth = 0;
    var selectedDay = 0;

    var months = ['January','February','March','April','May','June','July','August','September','October','November','December'];
    var monthYearField = null;
    var dayField = null;
    var checkoutMonthYearField = null;
	var checkoutDayField = null;

    var disableDateList = new Array();
    var disableDateListIDX = 0;
    var uptoDateDisable = null;
    var afterDateDisable = null;
	
    function getProperty(p_property)
    {
        var p_elm = calendarId;
        var elm = null;

        if(typeof(p_elm) == "object")
		{
            elm = p_elm;
        }
		else
		{
            elm = document.getElementById(p_elm);
        }
        if (elm != null)
		{
            if(elm.style)
			{
                elm = elm.style;
                if(elm[p_property])
				{
                    return elm[p_property];
                }
				else
				{
                    return null;
                }
            }
			else
			{
                return null;
            }
       }
    }

    function setElementProperty(p_property, p_value, p_elmId)
    {
      var p_elm = p_elmId;
      var elm = null;

      if(typeof(p_elm) == "object")
	  {
          elm = p_elm;
      }
	  else
	  {
          elm = document.getElementById(p_elm);
      }
	  
      if((elm != null) && (elm.style != null))
	  {
          elm = elm.style;
          elm[ p_property ] = p_value;
      }
  }

  
  function setProperty(p_property, p_value) {
    setElementProperty(p_property, p_value, calendarId);
  }

  function getDaysInMonth(year, month) {
    return [31,((!(year % 4 ) && ( (year % 100 ) || !( year % 400 ) ))?29:28),31,30,31,30,31,31,30,31,30,31][month-1];
  }

  function getDayOfWeek(year, month, day) {
    var date = new Date(year,month-1,day)
    return date.getDay();
  }

  this.clearDate = clearDate;
  function clearDate() {
//    dateField.value = '';
    hide();
  }

  this.setDate = setDate;
  function setDate(year, month, day)
  {
    
	var i;
	  
    if (monthYearField)
	{
        if (month < 10)
		{
		    month = "0" + month;
		}
        if (day < 10)
		{
		    day = "0" + day;
		}
        monthYear = month + "/" + year;
	  
	    for (i=0;i<monthYearField.length;i++)
	    {
            if (monthYear == monthYearField[i].value)
		    {
			    selectedItem = i;
			    break;
		    }
	    }
	  
        monthYearField.selectedIndex = selectedItem;
	  	  
        numberOfDaysInMonth = getDaysInMonth (year, month);
        size = dayField.length;
        for (i = size-1; i >= 0; i--)
        {
            dayField.remove(i);
        }

        for (i=0;i<numberOfDaysInMonth;i++)
        {
            optionDay = i + 1;
            if (optionDay < 10)
            {
                dayName = "0" + optionDay;
            }
            else
            {
                dayName = optionDay;
            }
            if (day == optionDay)
           {
               selectedItem = i;
           }
           optn = document.createElement("OPTION");
           optn.text = optionDay;
           optn.value = dayName;
           dayField.options.add(optn);
        }
        dayField.selectedIndex = selectedItem;

//      var dateString = month+"/"+day+"/"+year;	  
//      dateField.value = dateString;
	  
	    if (checkoutMonthYearField != null &&
		    checkoutDayField != null)
	    {
	        var checkoutDate = new Date();
	        checkoutDate.setDate(day);
            checkoutDate.setMonth(month-1); // January = 0
            checkoutDate.setFullYear(year); 
	   
	        checkoutDate.setDate(checkoutDate.getDate()+7);
	   
	        var checkoutDay = checkoutDate.getDate();
	        var checkoutMonth = checkoutDate.getMonth()+1;
	        var checkoutYear = checkoutDate.getFullYear();

            if (checkoutMonth < 10)
		    {
		        checkoutMonth = "0" + checkoutMonth;
		    }
            var checkoutMonthYear = checkoutMonth + "/" + checkoutYear;

            for (i=0;i<checkoutMonthYearField.length;i++)
	        {
                if (checkoutMonthYear == checkoutMonthYearField[i].value)
		        {
			        selectedItem = i;
			        break;
		        } 
	        }
	  
            checkoutMonthYearField.selectedIndex = selectedItem;
	  
            numberOfDaysInMonth = getDaysInMonth (checkoutYear, checkoutMonth);
            var size = checkoutDayField.length;
            for (i = size-1; i >= 0; i--)
            {
                checkoutDayField.remove(i);
            }
	
	        for (i=0;i<numberOfDaysInMonth;i++)
	        {
	            var optionCheckoutDay = i + 1;
		        if (optionCheckoutDay < 10)
		        {
		            dayName = "0" + optionCheckoutDay; 
		        }
		        else
		        {
		            dayName = optionCheckoutDay;
		        }
			    if (checkoutDay == optionCheckoutDay)
			    {
				    selectedItem = i;
			    }
				
                optn = document.createElement("OPTION");
                optn.text = optionCheckoutDay;
                optn.value = dayName;
                checkoutDayField.options.add(optn);
	        }
	        checkoutDayField.selectedIndex = selectedItem;			    
	    }
        hide();
    }
    return;
  }

  this.changeMonth = changeMonth;
  function changeMonth(change) {
    currentMonth += change;
    currentDay = 0;
    if(currentMonth > 12) {
      currentMonth = 1;
      currentYear++;
    } else if(currentMonth < 1) {
      currentMonth = 12;
      currentYear--;
    }

    calendar = document.getElementById(calendarId);
    calendar.innerHTML = calendarDrawTable();
  }

  this.resetDisableDate = resetDisableDate;
  function resetDisableDate()
  {
      disableDateListIDX = 0;	  
	  disableDateList = new Array();
	  uptoDateDisable = null;
	  afterDateDisable = null;
  }
  
  this.checkDisableDate = checkDisableDate;
  function checkDisableDate(dateValue)
  {
	  var i=0;
	  var matchDisable = false;
	  var disableDateRange;
	  var startDate, endDate;
	  var size = disableDateList.length;
	  
       dateElement = dateValue.split("/");
       selectedDateObj = new Date(dateElement[2], dateElement[0] - 1, dateElement[1]);

//alert ("The selected date obj is " + selectedDateObj);
	   
	   if (uptoDateDisable != null)
	   {
           dateElement = uptoDateDisable.split("/");
           uptoDateDisableObj = new Date(dateElement[2], dateElement[0] - 1, dateElement[1]);

		   if (selectedDateObj <= uptoDateDisableObj)
		   {
		       matchDisable = true;
		   }
	   }
	   
	   if (afterDateDisable != null && !matchDisable)
	   {
           dateElement = afterDateDisable.split("/");
           afterDateDisableObj = new Date(dateElement[2], dateElement[0] - 1, dateElement[1]);

           if (selectedDateObj >= afterDateDisableObj)
		   {
		       matchDisable = true;
		   }
	   }

//	  alert ("The size value is " + size);
	  if (!matchDisable)
	  {
	      for (i=0;i<size;i++)
	      {
		      disableDateRange = disableDateList[i];
		      startDate = disableDateRange[0];
		      endDate = disableDateRange[1];
		  
		      dateElement = startDate.split("/");
		      startDateObj = new Date(dateElement[2], dateElement[0] - 1, dateElement[1]);
//	  alert ("for date " + dateValue + " The start dates are " + startDate);
              dateElement = endDate.split("/");
		      endDateObj = new Date(dateElement[2], dateElement[0] -1 , dateElement[1]);
		  
//	  alert ("for date " + dateValue + " The end dates are " + endDate);


		      if (selectedDateObj >= startDateObj &&
			      selectedDateObj <= endDateObj)
		      {
//alert ("This is a match for " + selectedDateObj + " " + startDateObj + " " + endDateObj);
			      matchDisable = true;
			      break;
		      }
	      }
	  }
//      alert ("The match value is "+ matchDisable);
      return (matchDisable);
  }
  
  
  this.setDisableDate = setDisableDate;
  function setDisableDate(startDate, endDate)
  {
	  var disableDateRange; 
	  var startDateSet = true;
	  var endDateSet = true;
	  
	  if (typeof(startDate) == "undefined")
	  {
		  startDateSet = false;
	  }
	  
	  if (typeof(endDate) == "undefined")
	  {
		  endDateSet = false;
	  }
	  
	  if (startDateSet && endDateSet)
	  {
		  if (startDate != null && endDate != null)
		  {
		      disableDateRange = new Array();
              disableDateRange[0] = startDate;
		      disableDateRange[1] = endDate;
          		  
	          disableDateList[disableDateListIDX] = disableDateRange;
//	          alert (disableDateRange[disableDateListIDX][0]);
//	          alert (disableDateRange[disableDateListIDX][0]);
			  disableDateListIDX++;
		  }
		  else if (startDate != null)
		  {
		      uptoDateDisable = startDate;
//	          alert ("the uptoDateDisable is " + uptoDateDisable);
			  
		  }
		  else if (endDate != null)
		  {
			  afterDateDisable = endDate;
//	          alert ("the afterDateDisable is " + afterDateDisable);
		  }
	  }
	  else if (startDateSet && !endDateSet && startDate != null)	  
	  {
		  uptoDateDisable = startDate;
//          alert ("the uptoDateDisable is " + uptoDateDisable);
	  }
  }
  
  this.changeYear = changeYear;
  function changeYear(change) {
    currentYear += change;
    currentDay = 0;
    calendar = document.getElementById(calendarId);
    calendar.innerHTML = calendarDrawTable();
  }

  function getCurrentYear() {
    var year = new Date().getYear();
    if(year < 1900) year += 1900;
    return year;
  }

  function getCurrentMonth() {
    return new Date().getMonth() + 1;
  } 

  function getCurrentDay() {
    return new Date().getDate();
  }

  function calendarDrawTable() {

    var dayOfMonth = 1;
    var validDay = 0;
    var startDayOfWeek = getDayOfWeek(currentYear, currentMonth, dayOfMonth);
    var daysInMonth = getDaysInMonth(currentYear, currentMonth);
    var css_class = null; //CSS class for each day

    var table = "<table cellspacing='0' cellpadding='0' border='0'>";
    table = table + "<tr class='header'>";
//    table = table + "  <td colspan='2' class='previous'><a href='javascript:changeCalendarControlMonth(-1);'>&lt;</a> <a href='javascript:changeCalendarControlYear(-1);'>&laquo;</a></td>";
    table = table + "  <td colspan='2' class='previous'><a href='javascript:changeCalendarControlMonth(-1);'>&lt;</a></td>";
    table = table + "  <td colspan='3' class='title'>" + months[currentMonth-1] + "<br>" + currentYear + "</td>";
//    table = table + "  <td colspan='2' class='next'><a href='javascript:changeCalendarControlYear(1);'>&raquo;</a> <a href='javascript:changeCalendarControlMonth(1);'>&gt;</a></td>";
    table = table + "  <td colspan='2' class='next'><a href='javascript:changeCalendarControlMonth(1);'>&gt;</a></td>";
    table = table + "</tr>";
    table = table + "<tr><th>S</th><th>M</th><th>T</th><th>W</th><th>T</th><th>F</th><th>S</th></tr>";

    for(var week=0; week < 6; week++) {
      table = table + "<tr>";
      for(var dayOfWeek=0; dayOfWeek < 7; dayOfWeek++) {
        if(week == 0 && startDayOfWeek == dayOfWeek) {
          validDay = 1;
        } else if (validDay == 1 && dayOfMonth > daysInMonth) {
          validDay = 0;
        }

        matchDisableVal = checkDisableDate(currentMonth + "/" + dayOfMonth + "/" + currentYear); 

        if(validDay)
		{
            if (dayOfMonth == selectedDay && currentYear == selectedYear && currentMonth == selectedMonth)
			{
				if (matchDisableVal)
				{
                    css_class = 'disableCurrent';
				}
				else
				{
                    css_class = 'current';			
				}
            }
			else if (dayOfWeek == 0 || dayOfWeek == 6)
			{
				if (matchDisableVal)
				{
                    css_class = 'disableWeekend';
				}
				else
				{
                    css_class = 'weekend';			
				}
            }
			else
			{
				if (matchDisableVal)
				{
                    css_class = 'disableWeekday';
				}
				else
				{
                    css_class = 'weekday';			
				}
            }

		  if (matchDisableVal)
		  {
              table = table + "<td><span class='"+css_class+"'>"+dayOfMonth+"</span></td>";
		  }
		  else
		  {
              table = table + "<td><a class='"+css_class+"' href=\"javascript:setCalendarControlDate("+currentYear+","+currentMonth+","+dayOfMonth+")\">"+dayOfMonth+"</a></td>";
		  }
		  
            dayOfMonth++;
        } else {
          table = table + "<td class='empty'>&nbsp;</td>";
        }
      }
      table = table + "</tr>";
    }

//    table = table + "<tr class='header'><th colspan='7' style='padding: 3px;'><a href='javascript:clearCalendarControl();'>Clear</a> | <a href='javascript:hideCalendarControl();'>Close</a></td></tr>";
      table = table + "<tr class='header'><th colspan='7' style='padding: 3px;'><a href='javascript:hideCalendarControl();'>Close</a></td></tr>";
  table = table + "</table>";

    return table;
  }

  this.show = show;
  function show(inputMonthYearField, inputDayField, checkoutMYField, checkoutDField)
  {
  
    // If the calendar is visible and associated with
    // this field do not do anything.
	
    if (monthYearField == inputMonthYearField)
	{
      return;
    }
	else
	{
        monthYearField = inputMonthYearField;
	    dayField = inputDayField;
        checkoutMonthYearField = checkoutMYField;
	    checkoutDayField = checkoutDField;		
    }

    if(monthYearField)
	{
      try 
	  {


          var monthYear = new String (inputMonthYearField[inputMonthYearField.selectedIndex].value);
	      var day = new String (inputDayField[inputDayField.selectedIndex].value);

          var monthYearList = monthYear.split("/");
			 
          selectedMonth = parseInt(monthYearList[0],10);
          selectedDay = parseInt(day,10);
          selectedYear = parseInt(monthYearList[1],10);		  
      } 
	  catch(e)
	  {
	  }
    }

    if (!(selectedYear && selectedMonth && selectedDay)) {
      selectedMonth = getCurrentMonth();
      selectedDay = getCurrentDay();
      selectedYear = getCurrentYear();
    }

    currentMonth = selectedMonth;
    currentDay = selectedDay;
    currentYear = selectedYear;

    if(document.getElementById){

      calendar = document.getElementById(calendarId);
      calendar.innerHTML = calendarDrawTable(currentYear, currentMonth);

      setElementProperty('display', 'block', 'CalendarControlIFrame');
      setProperty('display', 'block');

      var fieldPos = new PositionInfo(dayField);
      var calendarPos = new PositionInfo(calendarId);
      var x = fieldPos.getElementLeft();
      var y = fieldPos.getElementBottom();

      setProperty('left', x + "px");
      setProperty('top', y + "px");
      setElementProperty('left', x + "px", 'CalendarControlIFrame');
      setElementProperty('top', y + "px", 'CalendarControlIFrame');
      setElementProperty('width', calendarPos.getElementWidth() + "px", 'CalendarControlIFrame');
      setElementProperty('height', calendarPos.getElementHeight() + "px", 'CalendarControlIFrame');

    }
  }

  this.hide = hide;
  function hide() {
    if(monthYearField) {
      setProperty('display', 'none');
      setElementProperty('display', 'none', 'CalendarControlIFrame');
      monthYearField = null;
	  dayField = null;
    }
  }

  this.visible = visible;
  function visible() {
    return monthYearField;
  }
}


var calendarControl = new CalendarControl();

function setCalendarDisableDate(disableDateList, showOneYear)
{
	if (showOneYear)
	{
        var date = new Date();
    	var month = date.getMonth()+1;
        var day = date.getDate();
    	var year = date.getFullYear();
    
	    curDateVal = month + "/" + day + "/" + year;
        calendarControl.setDisableDate(curDateVal);
	
        nextYear = parseInt(year) + 1;	
    	nextYearDateVal = month + "/" + day + "/" + nextYear;
	
        calendarControl.setDisableDate(null, nextYearDateVal);
	}
    count = disableDateList.length
	 
	for (i=0;i<count;i++)
	{
		disableDateRange = disableDateList[i];
		startDate = disableDateRange[0];
		endDate = disableDateRange[1];

//alert ("the start date and end dates are " + startDate + " " + endDate);

		calendarControl.setDisableDate(startDate, endDate);
	}
}

function showCalendarControl(inputMonthYearField, inputDayField, checkoutMYField, checkoutDField)
{
    calendarControl.show(inputMonthYearField, inputDayField, checkoutMYField, checkoutDField);
}

function clearCalendarControl()
{
  calendarControl.clearDate();
}

function hideCalendarControl(flag) {
  calendarControl.resetDisableDate();
  if (calendarControl.visible()) {
    if (flag) {
      calendarControl.hide();
    } else {
      window.setTimeout('hideCalendarControl(true)',200);
    }
  }
}

function setCalendarControlDate(year, month, day) {
  calendarControl.setDate(year, month, day);
}

function changeCalendarControlYear(change) {
  calendarControl.changeYear(change);
}

function changeCalendarControlMonth(change) {
  calendarControl.changeMonth(change);
}

document.write("<iframe id='CalendarControlIFrame' src='javascript:false;' frameBorder='0' scrolling='no'></iframe>");
document.write("<div id='CalendarControl'></div>");