// 
// SOME CHANGES MADE TO THIS SCRIPT FROM ORIGINAL, ALSO CUSTOMIZED BEYOND THAT TO REMOVE ARROWS, MATCH CSS, ETC
// + CUSTOMIZED L.FAISNEL 15/02/2007
//
// http://www.kryogenix.org/code/browser/sorttable/
// http://answers.google.com/answers/threadview?id=524043
// http://answers.google.com/answers/threadview?id=524440
// 


addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;

function sortables_init() {
    // Find all tables with class sortable and make them sortable
    if (!document.getElementsByTagName) return;
    tbls = document.getElementsByTagName("table");
    for (ti=0;ti<tbls.length;ti++) {
        thisTbl = tbls[ti];
        //if (((' '+thisTbl.className+' ').indexOf("sortable") != -1) && (thisTbl.id)) {
        if (((' '+thisTbl.className+' ').indexOf("donnees_tabulaires") != -1 || (' '+thisTbl.className+' ').indexOf("hidden") != -1) && (thisTbl.id))
        {
            //initTable(thisTbl.id);
            ts_makeSortable(thisTbl);
        }
    }
}

function ts_makeSortable(table) {
    if (table.rows && table.rows.length > 0) {
        var firstRow = table.rows[0];
    }
    if (!firstRow) return;
    
    // Assign classes to the rows when the table's first loaded
    for (i=1;i<table.rows.length;i++) { 
    	if (i%2 == 0) table.rows[i].className='pair';
    	else table.rows[i].className='impair';
    }
    
    // We have a first row: assume it's the header, and make its contents clickable links
    for (var i=0;i<firstRow.cells.length;i++)
    {
      var cell = firstRow.cells[i];
      var txt = ts_getInnerText(cell);
        
      // gestion d'un tri par defaut ajoutee par L.FAISNEL 15/02/2007
      switch (cell.id)
      {
        // le tableau est trie par defaut sur cette colonne (tri croissant)
        case 'sorted_asc_default':
      	  cell.innerHTML = '<a href="#" onclick="ts_resortTable(this, '+i+');return false;">'+txt+'<span class="sortarrow" sortdir="down">&nbsp;<img src="/fr/comparatifs/media/decroissant.png" alt="&darr;"/></span></a>';
      	  break;
      	// le tableau est trie par defaut sur cette colonne (tri decroissant)
      	case 'sorted_desc_default':
      	  cell.innerHTML = '<a href="#" onclick="ts_resortTable(this, '+i+');return false;">'+txt+'<span class="sortarrow" sortdir="up">&nbsp;<img src="/fr/comparatifs/media/croissant.png" alt="&uarr;"/></span></a>';
      	  break;
      	// colonne ne pouvant pas gerer de tri
      	case 'unsortable':
      	  break;
      	// colonne pouvant gerer le tri mais sur laquelle ne s'applique pas le tri par defaut
      	default:
          cell.innerHTML = '<a href="#" onclick="ts_resortTable(this, '+i+');return false;">'+txt+'<span class="sortarrow"></span></a>';
          break;
      }
    }
}

function ts_getInnerText(el)
{
	if (typeof el == "string") return el;
	if (typeof el == "undefined") { return el };
	if (el.innerText) return el.innerText;	//Not needed but it is faster
	var str = "";
	
	var cs = el.childNodes;
	var l = cs.length;
	for (var i = 0; i < l; i++)
	{
		switch (cs[i].nodeType)
		{
			case 1: //ELEMENT_NODE
				str += ts_getInnerText(cs[i]);
				break;
			case 3:	//TEXT_NODE
				str += cs[i].nodeValue;
				break;
		}
	}
	return str;
}

function ts_resortTable(lnk, clid)
{
  // get the span
  var span;
  for (var ci=0;ci<lnk.childNodes.length;ci++)
  {
    if (lnk.childNodes[ci].tagName && lnk.childNodes[ci].tagName.toLowerCase() == 'span') span = lnk.childNodes[ci];
  }
  var spantext = ts_getInnerText(span);
  var td = lnk.parentNode;
  var column = clid || td.cellIndex;
  var table = getParent(td,'TABLE');
    
  // Work out a type for the column
  if (table.rows.length <= 1) return;
  var itm = ts_getInnerText(table.rows[1].cells[column]);
  sortfn = ts_sort_caseinsensitive;
  if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d\d\d$/)) sortfn = ts_sort_date;
  if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d$/)) sortfn = ts_sort_date;
  //if (itm.match(/(img)/)) sortfn = ts_sort_image; // ajout au code original (Laurent)
  if (itm.match(/(Mbits|Kbits)/)) sortfn = ts_sort_debit; // ajout au code original (Laurent)
  if (itm.match(/(TTC|HT)[\/](mois|minute)/)) sortfn = ts_sort_currency; // ideal serait de chercher symbole euro mais caractere pose pb
  if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;
  SORT_COLUMN_INDEX = column;
  var firstRow = new Array();
  var newRows = new Array();
  for (i=0;i<table.rows[0].length;i++) { firstRow[i] = table.rows[0][i]; }
  for (j=1;j<table.rows.length;j++) { newRows[j-1] = table.rows[j]; }

  newRows.sort(sortfn);

  if (span.getAttribute("sortdir") == 'down')
  {
    ARROW = '&nbsp;<img src="/fr/comparatifs/media/croissant.png" alt="&uarr;"/>';
    newRows.reverse();
    span.setAttribute('sortdir','up');
  }
  /*if (span.getAttribute("sortdir") == 'up')
  {
    ARROW = '&nbsp;<img src="/fr/comparatifs/media/decroissant.png" alt="&darr;"/>';
    span.setAttribute('sortdir','down');
  }*/
  else
  {
    ARROW = '&nbsp;<img src="/fr/comparatifs/media/decroissant.png" alt="&darr;"/>';
    span.setAttribute('sortdir','down');
  }
    
  // Assign updated classes to the rows when the sort's finished
  for (i=0;i<newRows.length;i++)
  { 
  	if (i%2 == 1) newRows[i].className='pair';
  	else newRows[i].className='impair';
  }
    
  // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
  // don't do sortbottom rows
  for (i=0;i<newRows.length;i++)
  {
    if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1)))
      table.tBodies[0].appendChild(newRows[i]);
  }
  // do sortbottom rows only
  for (i=0;i<newRows.length;i++)
  {
    if (newRows[i].className && (newRows[i].className.indexOf('sortbottom') != -1))
      table.tBodies[0].appendChild(newRows[i]);
  }
    
  // Delete any other arrows there may be showing
  var allspans = document.getElementsByTagName("span");
  for (var ci=0;ci<allspans.length;ci++)
  {
  	if (allspans[ci].className == 'sortarrow')
  	{
    	if (getParent(allspans[ci],"table") == getParent(lnk,"table"))
    	{ // in the same table as us?
      	allspans[ci].innerHTML = '&nbsp;&nbsp;&nbsp;';
      }
    }
  }
        
  span.innerHTML = ARROW;
}

function getParent(el, pTagName) {
	if (el == null) return null;
	else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase())	// Gecko bug, supposed to be uppercase
		return el;
	else
		return getParent(el.parentNode, pTagName);
}
function ts_sort_date(a,b) {
    // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX
    //alert("0");
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
    if (aa.length == 10) {
        dt1 = aa.substr(6,4)+aa.substr(3,2)+aa.substr(0,2);
    } else {
        yr = aa.substr(6,2);
        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }
        dt1 = yr+aa.substr(3,2)+aa.substr(0,2);
    }
    if (bb.length == 10) {
        dt2 = bb.substr(6,4)+bb.substr(3,2)+bb.substr(0,2);
    } else {
        yr = bb.substr(6,2);
        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }
        dt2 = yr+bb.substr(3,2)+bb.substr(0,2);
    }
    if (dt1==dt2) return 0;
    if (dt1<dt2) return -1;
    return 1;
}

// fonction ajoutee par Laurent le 23/02/2007
/*function ts_sort_image(a,b)
{
    //alert("1");
	contenu1 = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
	contenu2 = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
	alt1 = contenu1.getElementsByTagName('img')[0].attributes[1].nodeValue();
	alt2 = contenu2.getElementsByTagName('img')[0].attributes[1].nodeValue();
	alert(alt1);
	return 1;
}	*/	

// fonction ajoutee par Laurent le 14/02/2007
function ts_sort_debit(a,b)
{
	contenu1 = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
	contenu2 = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
	valeur1 = parseFloat(contenu1.replace(/[^0-9,]/g,''));
	valeur2 = parseFloat(contenu2.replace(/[^0-9,]/g,''));
	if (contenu1.match(/Mbits/)) valeur1 = 1024*valeur1;
	if (contenu2.match(/Mbits/)) valeur2 = 1024*valeur2;
	return valeur1 - valeur2;
}

function ts_sort_currency(a,b)
{
	aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).replace(/[^0-9,]/g,'');
	bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).replace(/[^0-9,]/g,'');
	return parseFloat(aa) - parseFloat(bb);
}

function ts_sort_numeric(a,b)
{
	aa = parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));
	if (isNaN(aa)) aa = 0;
	bb = parseFloat(ts_getInnerText(b.cells[SORT_COLUMN_INDEX])); 
	if (isNaN(bb)) bb = 0;
	return aa-bb;
}

function ts_sort_caseinsensitive(a,b)
{
	aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).toLowerCase();
	bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).toLowerCase();
	if (aa==bb) return 0;
	if (aa<bb) return -1;
	return 1;
}

function ts_sort_default(a,b)
{
	aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
	bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
	if (aa==bb) return 0;
	if (aa<bb) return -1;
	return 1;
}


function addEvent(elm, evType, fn, useCapture)
// addEvent and removeEvent
// cross-browser event handling for IE5+,  NS6 and Mozilla
// By Scott Andrew
{
	if (elm.addEventListener)
	{
		elm.addEventListener(evType, fn, useCapture);
		return true;
  }
  else if (elm.attachEvent)
  {
  	var r = elm.attachEvent("on"+evType, fn);
  	return r;
  }
  else
	{
		alert("Handler could not be removed");
  }
}