/// sort_table.js
/// Alessandro Piccione: 10/07/2007: modifiche al funzionamento generale

//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)) {
            //initTable(thisTbl.id);
            ts_makeSortable(thisTbl);
        }
    }
}

function old_ts_makeSortable(table) {

    if (table.rows && table.rows.length > 0) {
        var firstRow = table.rows[0];
    }
    if (!firstRow) return;
    
    // 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);
        cell.innerHTML = '<a href="#" class="sortheader" ' + 
        'onclick="ts_resortTable(this, '+i+');return false;">' + 
        content+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
    }
}

function ts_makeSortable(table) {

    if (table.rows && table.rows.length > 0) {
        var firstRow = table.rows[0];
    }
    if (!firstRow) return;
    
    // 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];
        
        if ((' '+cell.className+' ').indexOf("sortable") != -1)
        {
            var content = cell.innerHTML;
            //alert(content);
            cell.innerHTML = '<a href="#" class="sortheader" ' + 
            'onclick="ts_resortTable(this, '+i+');return false;">' + 
            content+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
            
//            var txt = ts_getInnerText(cell);
//            cell.innerHTML = '<a href="#" class="sortheader" ' + 
//            'onclick="ts_resortTable(this, '+i+');return false;">' + 
//            txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
        }
    }
}


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 setAjaxImg(obj)
{
    
    obj.innerHTML = "&nbsp;&nbsp;<img src=\"Images/ajax_on_black_mini_balls.gif\" />";
    //var popSort = window.open("pippo", "pippo");
    //popSort.close();
}

function showAjaxImg(sortLink)
{
    var img = sortLink.parentNode.getElementsByTagName("img");
    for (x=0; x<img.length; x++)
    {
        if (img[x].name == "imgAjax")
        {
            img[x].style.display = "";
            //alert(123);
            return;
        }
    }
}

function hideAjaxImg(sortLink)
{
    var img = sortLink.parentNode.getElementsByTagName("img");
    for (x=0; x<img.length; x++)
    {
        if (img[x].name == "imgAjax")
        {
            img[x].style.display = "none";
            return;
        }
    }
}

function cambiaFont() {
 if (stile[0].style.fontFamily == "Verdana, Arial, Helvetica, sans-serif")
  stile[0].style.fontFamily = "georgia,times,times new roman,serif";
 else
  stile[0].style.fontFamily = "Verdana, Arial, Helvetica, sans-serif";
} 


function ts_resortTable(lnk,clid, sortFunctionType) {
    // 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);
    span.innerHTML = "&nbsp;&nbsp;<img src=\"../Images/ajax_on_black_mini_balls.gif\" />";
    //alert("123");
    //setAjaxImg(span);
    
//    for(x=0; x<123456; x++) { pippo = x*3-4/2; }
//    for(x=0; x<123456; x++) { pippo = x*3-4/2; }
//    for(x=0; x<123456; x++) { pippo = x*3-4/2; }
//    for(x=0; x<123456; x++) { pippo = x*3-4/2; }
//    for(x=0; x<123456; x++) { pippo = x*3-4/2; }
    status = "sorting spare parts";
    //alert(123);
    //showAjaxImg(lnk);
        
    var td = lnk.parentNode;
    var column = clid || td.cellIndex;
    var table = getParent(td,'TABLE');
    
    //document.getElementById("img_ajax").src = "Images/ajax_on_black_mini_balls.gif";;
    //alert(22);
    
    //var img_ajax = document.createElement("IMG");
    //img_ajax.src = "Images/ajax_on_black_mini_balls.gif";
    //span.appendChild(img_ajax);
    //table.refresh();
    //alert(123);
    
    //span.innerHTML = "<img src=\"Images/ajax_on_black_mini_balls.gif\" />";
    //span.firstChild.setAttribute("src", "Images/ajax_on_black_mini_balls.gif" );
    
    // Work out a type for the column
    if (table.rows.length <= 1) return;
    var itm = ts_getInnerText(table.rows[1].cells[column]);
    
    /// try to find the sort type 
    //alert(td.innerHTML);
    var oldTdContent = td.innerHTML;
    var oldSpanContent = span.innerHTML;
    
    //var sortFunctionType = null
    if (td.sortFunctionType)
    {
        sortFunctiontype = td.sortFunctionType;
    }
    else if(td.className.indexOf('sortFunctionType')>0)
    {
        sortFunctionType = td.className.substr(td.className.indexOf('sortFunctionType:')+17);
        //alert(sortFunctionType);
    }
    
    if (sortFunctionType)
    {
        if(sortFunctionType == "text") sortfn = ts_sort_caseinsensitive;
        else if(sortFunctionType == "numeric") sortfn = ts_sort_numeric;
        else if(sortFunctionType == "date") sortfn = ts_sort_date;
        else if(sortFunctionType == "currency") sortfn = ts_sort_currency;
        else alert("attribute sortFunctionType of the column unknown: " + td.sortFunctionType);
    }
    else
    {
        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(/^[£$]/)) sortfn = ts_sort_currency;
        if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;       // also can contains character
    }
    
    //var sortDirection = span.getAttribute("sortdir"
    
//    span.innerHTML = "<img src=\"Images/ajax_on_black_mini_balls.gif\" />";
    

    SORT_COLUMN_INDEX = column;
    var firstRow = new Array();
    //var newRows = new Array(); /// perchè non viene dimensionato all'inizio ???
    var newRows = new Array(table.rows.length-1);
    //alert("table.rows[0][i]: " + table.rows[0][1]);
    /// Alessandro: a che serve la riga qui sotto ??? la commnento
    //for (i=0;i<table.rows[0].length;i++) { firstRow[i] = /*table.rows[0][i]*/ null; }
    for (j=1;j<table.rows.length;j++) { newRows[j-1] = table.rows[j]; }

    //alert(sortfn.name);
    // ts_sort_numeric for IE is too much expansive (if there is character value ???) ??????
    /*if (sortfn.name == "ts_sort_numeric" && is_IE)
    {
        sortfn = ts_sort_caseinsensitive;
    }*/
    newRows.sort(sortfn);

//    for(x=0; x<1234567; x++)
//    {
//        var pippo = x*3 +3;
//    }

    if (span.getAttribute("sortdir") == 'down') {
        //ARROW = '&nbsp;&nbsp;&uarr;';
        ARROW = "&nbsp;&nbsp;<img src=\"../Images/Customized/arrow_down.gif\">";
        newRows.reverse();
        span.setAttribute('sortdir','up');
    }
    else {
        //ARROW = '&nbsp;&nbsp;&darr;';
        ARROW = "&nbsp;&nbsp;<img src=\"../Images/Customized/arrow_up.gif\">";
        span.setAttribute('sortdir','down');
    }
    
    //span.style.fontFamily == "Verdana, Arial, Helvetica, sans-serif";
    //span.style.fontFamily = "georgia,times,times new roman,serif";
    //td.style.fontFamily == "Verdana, Arial, Helvetica, sans-serif";
    //td.style.fontFamily = "georgia,times,times new roman,serif";
    
    // 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;
    
    //hideAjaxImg(lnk);
    
    /// refresh the header position
    //fixTablePartsHeader();
   
    try
    {
        /// chiama la funzione per resettare gli style delle righe in modo alternato, 
        /// maintainSelection = true permette di lasciare selezionate le righe che lo erano
        resetTableRowsStyle(true);
    }
    catch(error)
    { }
}

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
    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;
}

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");
  }
}