/*
   Common PUBLIC library with misc routines.
*/

// *****************************************************************************
// Removes leading whitespaces
function LTrim( value ) {

  if ( value ) {
    var re = /\s*((\S+\s*)*)/;
    return value.replace(re, "$1");
  }
  else return '';
}
// *****************************************************************************
// Removes ending whitespaces
function RTrim( value ) {

  if ( value ) {
    var re = /((\s*\S+)*)\s*/;
    return value.replace(re, "$1");
  }
  else return '';
}
// *****************************************************************************
// Removes leading and ending whitespaces
function trim( value ) {

  return LTrim(RTrim(value));
}
// *****************************************************************************
function GetDOM(elemID)
{
   if ( document.getElementById ) {
     method = 1;
   } else if (document.all) {
     method = 2;
   } else {
     method = 0;
   }

   return (method==1) ? document.getElementById(elemID) : document.all[elemID];
}
// *****************************************************************************
function ParentGetDOM(elemID) {
    if (document.getElementById) {
        method = 1;
    } else if (document.all) {
        method = 2;
    } else {
        method = 0;
    }

    return (method == 1) ? window.parent.document.getElementById(elemID) : window.parent.document.all[elemID];
}
// *****************************************************************************
function IsIE5() {
    return document.all && document.getElementById;
}
function IsNS6() {
    return document.getElementById && !document.all;
}
// *****************************************************************************
// Hides an HTML object identified by its ID
function Hide( elementid ) {
  var it;

  it=GetDOM(elementid);

  if ( it != null )
      it.style.display = 'none';

  return 1;
}
// *****************************************************************************
// Shows an HTML object identified by its ID
function Show( elementid ) {
  var it;

  it=GetDOM(elementid);

  if ( it != null )
      it.style.display = '';

  return 1;
}
// *****************************************************************************
// Toggles the visiblity of an HTML object identified by its ID
function Toggle(elementid) {
    ToggleVisible(elementid)
}
    
// Toggles the visiblity of an HTML object identified by its ID
function ToggleVisible( elementid ) {
  var it;

  it=GetDOM(elementid);

  if ( it != null )
  {
      if (it.style.display == '')
          it.style.display = 'none';
      else
          it.style.display = '';
  }

  return 1;
}

// Toggles the class of an HTML object identified by its ID and assigns a new class depending on the visibility
function ToggleClassOnVisibility( elementid, VisibleClass, HiddenClass ) {
  var it;

  it=GetDOM(elementid);

  if ( it != null )
  {
      if (it.style.display == '')
      {
          it.className = HiddenClass;
      }
      else
      {
          it.className = VisibleClass;
      }
  }
  
  return 1;
}

// Toggles the class of an HTML object identified by its ID and assigns a new class depending on another element's visibility
function ToggleClassOnAnotherElementsVisibility( ChangeClassElementId, VisibilityElementId, VisibleClass, HiddenClass ) {

  var ChangeClassElement;
  var VisibilityElement;

  ChangeClassElement = GetDOM(ChangeClassElementId);
  VisibilityElement = GetDOM(VisibilityElementId);

  if ( ChangeClassElement != null & VisibilityElement != null)
  {
      if (VisibilityElement.style.display == '')
      {
          ChangeClassElement.className = VisibleClass;
      }
      else
      {
          ChangeClassElement.className = HiddenClass;
      }
  }
  
  return 1;
}

// *****************************************************************************
// Toggles the visiblity of the child objects of an HTML object identified by its ID.
// The visiblity of all child elements is set to the same value, which is determined
// from the current state of the first child element.
// A child object is only altered if it is the specified tag type and its ID 
// begins with a specified prefix.
function ToggleSimpleChildrenVisible(elementid, tagname, prefix, ignoreitems)
{
  var it = GetDOM(elementid);
  if (it != null)
  {
    var x = it.getElementsByTagName(tagname);
    if (x.length > 0)
    {
      var newdisplay = '';
      var found = false;
      var ignore = '';
      
      if (ignoreitems) 
        ignore = ignoreitems.split(',');  // Loads an array with the items to be ignored
    
      for (i = 0; i < x.length; i++)
        if (x[i].id.substring(0, prefix.length) == prefix)
        {
            // The item matches the prefix but is it in the ignore list?
            if (GetArrayElementIndex(ignore, x[i].id) < 0)
            {       
                  if (!found)
                  {
                    if (x[i].style.display == '')
                      newdisplay = 'none';
                    else
                      newdisplay = '';
                    found = true;
                  }
                  x[i].style.display = newdisplay;
            }
        }
    }
  }
}
function ToggleChildrenVisible(elementid, tagname, prefix, ignoreitems, sender)
{
  var it = GetDOM(elementid);
  if (it != null)
  {
    var x = it.getElementsByTagName(tagname);
    if (x.length > 0)
    {
      var newdisplay = '';
      var found = false;
      var ignore = '';
      
      if (ignoreitems) 
        ignore = ignoreitems.split(',');  // Loads an array with the items to be ignored
      var isGroupHeader = ((((document.getElementById(sender)).getElementsByTagName('td'))[0]).className == 'GroupHeader');
        for (i = 0; i < x.length; i++)
        {             
            if (x[i].id.substring(0, prefix.length) == prefix)
            {
                var isGroupHeaderInner = (((x[i].getElementsByTagName('td'))[0]).className == 'GroupHeaderInner');              
                // The item matches the prefix but is it in the ignore list?
                
                if (isGroupHeader)
                {
                    if (isGroupHeaderInner)
                    {                             
                            if (x[i].style.display == '')
                              newdisplay = 'none';
                            else
                              newdisplay = '';                     
                            x[i].style.display = newdisplay;                                
                    }
                    else
                    {
                            x[i].style.display = 'none';                      
                    }                  
                }
                else
                {
                    if (GetArrayElementIndex(ignore, x[i].id) < 0)
                    {       
                          if (!found)
                          {
                            if (x[i].style.display == '')
                              newdisplay = 'none';
                            else
                              newdisplay = '';
                            found = true;
                          }
                          x[i].style.display = newdisplay;
                    }
                }
            }
        }
    }
  }
}
//*******************************************************************************
function DeleteArrayElement(array, iwhich) {
  size     = array.length;
  delindex = iwhich;
  validNo = (iwhich != "NaN");
  inRange = ( (iwhich >= 0) && (iwhich <= array.length) );

  if (validNo && inRange) {

    for (var j=iwhich; j<size-1; j++)
      if (j != size)
        array[j] = array[j+1];

    array.length = size-1;
  }
}
/************************************************************************************************/
// Removes an element with the given value from an array 
function DeleteArrayElementByValue(array, value) {
    DeleteArrayElement(array, GetArrayElementIndex(array, value));
}
/************************************************************************************************/
// Returns the index of an element within an array
function GetArrayElementIndex(array, value) {
    for (var j=0; j<array.length; j++)
      if (array[j] == value)
        return j;
        
    return -1;    
}
/************************************************************************************************/
//adds onLoadEvent
function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}   
/************************************************************************************************/
//not used - Javascript does not allow declaring method of the same name with different number of parameters?
function email(to, domain)
{
    emailE = (to + '@' + domain);
	document.write('<A href="mailto:' + emailE + '">' + emailE + '</a>'  );
}
/************************************************************************************************/
function email(to, domain, text) {
    emailE = (to + '@' + domain);
    if(text == undefined)
        document.write('<A href="mailto:' + emailE + '">' + emailE + '</a>');
    else
        document.write('<A href="mailto:' + emailE + '">' + text + '</a>');
}
/************************************************************************************************/
//Javascript to copy to clipboard
function ClipBoard(text, cell) 
{
    var browser=navigator.appName;
    if(browser == 'Microsoft Internet Explorer')
        window.clipboardData.setData('Text',text);
    select(document.getElementById(cell));
}
var select = function (el) 
{
    if (window.getSelection) { // FF, Safari, Opera
        var sel = window.getSelection();
        var range = document.createRange();
        range.selectNodeContents(el);
        sel.removeAllRanges();
        sel.addRange(range);
        alert('Please press Ctr + C to copy the link');            
    } 
    else if (document.selection) 
    { // IE
        document.selection.empty();
        var range = document.body.createTextRange();
        range.moveToElementText(el);
        range.select();
        alert('The link is copied');
    }
}
/************************************************************************************************/
function getElementsByClassName(classname, node) 
{
    if (!node)
        node = document.getElementsByTagName("body")[0];

    var a = [];

    var re = new RegExp('\\b' + classname + '\\b', 'i');  // i: Ignore case
    var els = node.getElementsByTagName("*");

    for (var i = 0, j = els.length; i < j; i++)
        if (re.test(els[i].className)) a.push(els[i]);

    return a; 
}
/************************************************************************************************/