/*
*  EVOKNOW Javascript library Version 1.0.0
*  Maintained by MJK
*
*  DO NOT CHANGE THIS SCRIPT WITHOUT PERMISSION FROM MJK
*
*  CVS ID: $Id$
*   
**************************************************************/
var DEFAULT_HIGHLIGHT_COLOR = '#ff0000';
var DEFAULT_RESET_COLOR     = '#000000';

// Global array required for storing
// required fields information for
// the current form
var requiredFields = new Array();


//
// Commonly Used Regular Expressions
//
RE_US_ZIPCODE = /\d{5}(-\d{4})?/;                                                                                                                                                 
RE_EMAIL_ADDRESS = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;



//
// Standar cancel button function
//
function doCancel()
{
   document.location.href = CANCEL_URL;
}

//
// Show error messages (if any)
//
function showErrors(frm, setColor, resetColor)
{

   // if highlight (set) color is not provided
   // use default
   if (! setColor)
      setColor = DEFAULT_HIGHLIGHT_COLOR;
      

   // if reset color is not provided
   // use default
   if (! resetColor)
      resetColor = DEFAULT_RESET_COLOR;
      
   with (frm)
   {
     
     // Is there error messages from PHP side?
     if (errorMsgList.length > 0)
     {
         var errCnt = errorMsgList.length;
         var msgBlock = "";
         for(i=0; i<errCnt; i++)
         {
            msgBlock += errorMsgList[i] + "\n";
            tdColumnID = errorMsgFieldList[i];
            highlightTableColumn(tdColumnID, setColor);
            
            //fields = document.getElementsByName(errorMsgFieldList[i]);
            //fields[0].focus();
         }

         // If we are supposed to show alert() popup
         // for errors, show one.
         if (alertPopup)
             alert(msgBlock);  
     }
   }
   
   return true;
}

//
// Highlight a table column foreground color and style using ID
//
function highlightTableColumn(id, highColor)
{
   
   if (!highColor)
       highColor = DEFAULT_HIGHLIGHT_COLOR;
       
   thisElement                  = document.getElementById(id);
   thisElement.style.color      = highColor;
   thisElement.style.fontWeight = "bold";   
}

//
// Reset a table column foreground color and style using ID
//
function resetTableColumn(id, resetColor)
{
   if (!resetColor)
       resetColor = DEFAULT_RESET_COLOR;

   thisElement                  = document.getElementById(id);
   thisElement.style.color      = resetColor;
   //thisElement.style.fontWeight = "normal";   
}

//
// Purpose: check if a drop-down list has at least one item
//          selected or not
//
// Return:  true if at least one item is selected, else false
function itemSelectedFromDropDownList(menu)
{
   // If nothing is selected return false
   if (menu.selectedIndex == null || 
       menu.selectedIndex == 0 )
   {
       return false;
   }
   
   // An item is selected, return true
   return true;
}

//
// Purpose: this function allows you to define a form field
//          as a required field. A subsequent call to 
//          validateForm() allows you to ensure that the
//          form cannot be submitted without required fields
//          
//
function setRequiredField(formFieldObject, 
                          fieldType, 
                          fieldLabel, 
                          fieldValidator,
                          fieldErrorMsg)
{
   var i = requiredFields.length;
   
   // Store the given field's requirements
   // information in the global array
   requiredFields[i] = new Array();
   requiredFields[i]['field'] = formFieldObject; 
   requiredFields[i]['type']  = fieldType;
   requiredFields[i]['label']  = fieldLabel;
   
   // Reset the color 
   resetTableColumn(fieldLabel);
   
   if (fieldValidator)
       requiredFields[i]['validator']  = fieldValidator;
      
   // MK-TODO: current version does not use error_msg data
   if (fieldErrorMsg)
      requiredFields[i]['error_msg']  = fieldErrorMsg;
   else
      requiredFields[i]['error_msg']  = "The " + formFieldObject + " value is missing or incorrect";

   // MK TODO: need to add data type validation support
   
}

//
// Purpose: do required field validation for a form
//          This function relies on setRequiredField()
//          set up data in requiredFields array for
//          doing appropriate validation
//
//
function validateForm(thisForm)
{
   // Get the count of required fields
   var reqFieldCnt = requiredFields.length;
   var errCnt = 0;
   
   with (thisForm)
   {
      for(i=0; i<reqFieldCnt; i++)
      {
         var formFieldObject  =  requiredFields[i]['field'];
         var fieldType  =  requiredFields[i]['type'];
         var fieldLabel =  requiredFields[i]['label'];
         var fieldErr   =  requiredFields[i]['error_msg'];
 
         // If current field is a drop down list and
         // not a single item is selected, we have a
         // required field violation!
         if (fieldType == 'dropdown' && !itemSelectedFromDropDownList(formFieldObject))
         {
             if (fieldLabel)
                highlightTableColumn(fieldLabel);
             
             formFieldObject.focus();
             errCnt++;
         }
         // If current field is a text box and it is empty
         // we have a required field violation
         else if (fieldType == 'textbox' && formFieldObject.value == "")
         {
             //alert("No value selected for " + fieldLabel);
             
             if (fieldLabel)
                highlightTableColumn(fieldLabel);
             
             //formFieldObject.focus();              
             errCnt++;
         }
         // If current field is a check box and it is not selected
         // we have a required field violation
         else if (fieldType == 'checkbox' && ! isCheckBoxSelected(formFieldObject))
         {
             if (fieldLabel)
                highlightTableColumn(fieldLabel);
             
             errCnt++;
         }
         // If current field is a radio box and it is not selected
         // we have a required field violation
         else if (fieldType == 'radio' && ! isRadioSelected(formFieldObject))
         {
             if (fieldLabel)
                highlightTableColumn(fieldLabel);
             
             errCnt++;
         }

      }
   } 
   
   return errCnt;
}


//
// Purpose: allows you to find out if a checkbox is
//          selected. If you have a checkbox group (i.e.
//          checkbox with same name, it will work too
//
function isCheckBoxSelected(chkbox)
{                      
   var noneChecked = true;                   
   
   if (typeof chkbox.length == 'undefined') 
   {
     // there's only one checkbox in the form
     // normalize it to an array
     chkbox = new Array(chkbox);             
   }                                         
   
   for (var i = 0; i < chkbox.length; i++) 
   { 
      if (chkbox[i].checked) 
      {               
         noneChecked = false;                
         break;                              
      }                                     
    }                                        
   
   if (noneChecked) 
       return false;                       
   
   return true;               
}                          

function isRadioSelected(btnName)
{

  // If only one item
  if (typeof btnName.length == 'undefined') 
  {
    if (btnName.checked == true)
        return true;
    else
        return false;
  }                                         

  // There are many radio options
  var len = btnName.length;

  var i=0;
  var noneSelected = true;
  
  while(noneSelected && i<len)
  {
    if (btnName[i].checked == true)
    {
      noneSelected = false;
    }
    i++;
  }

  return !noneSelected;
       
}

//
// Purpose: allows you to select a list of items for a 
//          checkbox group
//
function selectChosenCheckBoxItems(formFieldString, chosenList)
{
   var frm = document.forms[0];
      
   with (frm)
   {   
   if (chosenList.length > 0)
      {
          var chkbox = elements[formFieldString];       
          
          if (typeof chkbox.length == 'undefined') 
          {
            chkbox = new Array(chkbox);             
          }                                         
          
          for (var i = 0; i < chkbox.length; i++) 
          { 
             for(var j=0; j < chosenList.length; j++)
             {
                if (chkbox[i].value == chosenList[j]) 
                {
                  chkbox[i].checked = true;
                }
             }                                     
          }                                        
      }

   }
}


//
// Utility Function
//
// Purpose: strip everything nut [0-9.] set from given string
// Return : string containing only [0-9.] characters
function makeNumber(str)
{
   if (str != null && str.length > 0)
       return str.replace(/[^0-9.]/g, '');
   else
       return null;
}


//
// Toggle a div block using the div id
//
// Example div:
// <div id="A" style="display: none"> something </div>
//
// Example call:
//
// <a href="javascript:toggle('A')"><strong>Show Details of section A</strong></a>

function toggle(targetId) {
  
  if ("none" == document.getElementById(targetId).style.display) {
     document.getElementById(targetId).style.display = "block";
  }
  else {
     document.getElementById(targetId).style.display = "none";
  }
}

function doConfirm(msg)
{
    return confirm(msg);
}

function validateUSDate( strValue ) 
{
   //var objRegExp = /^\d{1,2}(\/)\d{1,2}\1\d{4}$/
   var objRegExp = /^\d{2}(\/)\d{2}\1(\d{2}|\d{4})$/
   //check to see if in correct format
   if(!objRegExp.test(strValue))
   {
     return false; //doesn't match pattern, bad date
   }
   else
   {
     var strSeparator = strValue.substring(2,3) //find date separator
     
     var arrayDate = strValue.split(strSeparator); //split date into month, day, year
     
     //create a lookup for months not equal to Feb.
     var arrayLookup = { '01' : 31,'03' : 31, '04' : 30,'05' : 31,'06' : 30,'07' : 31,
                         '08' : 31,'09' : 30,'10' : 31,'11' : 30,'12' : 31}
     var intDay = parseFloat(arrayDate[1]);
     
     //check if month value and day value agree
     if(arrayLookup[arrayDate[0]] != null) 
     {
       if(intDay <= arrayLookup[arrayDate[0]])// && intDay != 0)
         return true; //found in lookup table, good date
     }
   
     //check for February (bugfix 20050322)
     var intMonth = parseInt(arrayDate[0]);
     if (intMonth == 2) 
     { 
        var intYear = parseInt(arrayDate[2]);
        if( ((intYear % 4 == 0 && intDay <= 29) || (intYear % 4 != 0 && intDay <=28)) && intDay !=0)
           return true; //Feb. had valid number of days
     }
   }
   return false; //any other values, bad date
}


function showDiv(divId)
{
   if (document.getElementById)
	 { // DOM3 = IE5, NS6
      document.getElementById(divId).style.display = 'inline';
   }
   else
	 {
      if (document.layers)
	    { // Netscape 4
         document.divId.style.display = 'inline';
      }
      else
	    { // IE 4
         document.all.divId.style.display = 'inline';
      }
   }
}

/*
 * Purpose: this function hides the Div
 */
function hideDiv(divId)
{
   if (document.getElementById)
   { // DOM3 = IE5, NS6
      document.getElementById(divId).style.display = 'none';
   }
   else
   {
      if (document.layers)
      { // Netscape 4
         document.divId.display = 'none';
      }
      else
      {   // IE 4
         document.all.divId.style.display = 'none';
      }
   }
}