//This script was for sorting tables taken from
//http://www.kryogenix.org/code/browser/sorttable/

//modifications performed to add additional functions done by Shay Wilson

addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;
var tbody, headRow; 
var bDragMode = false;
var objDragItem;
var arrHitTest = new Array();
var iArrayHit = false;
var ColumnCount = null;
var element;
var dragColor='red';
var defaultTitleColor='white';
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 ts_makeSortable(table) {
    if (table.rows && table.rows.length > 0) {
        var firstRow = table.rows[0];
    }
    if (!firstRow) return;
    

	var cx=0;
	var cy=0;
	var c;
	defaultTitleColor = firstRow.style.backgroundColor;	 
	
    tbody=table;
    // We have a first row: assume it's the header, and make its contents clickable links
    ColumnCount=firstRow.cells.length
	headRow=firstRow;
	for (var i=0;i<firstRow.cells.length;i++) {
        var cell = firstRow.cells[i];
	  cell.style.cursor = "hand";

        var txt = ts_getInnerText(cell);
        cell.innerHTML = '<a href="#" alt="sort by this column"  class="sortheader" '+ 
        'onclick="ts_resortTable(this, '+i+');return false;">' + 
        txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>'; 
	
	//Drag stuff for each header cell
		arrHitTest[i] = new Array();
		firstRow.style.cursor = "move";
		var clickCell = cell;
		clickCell.selectIndex = i;
		c = clickCell.offsetParent;
		if(cx == 0 && cy == 0 )
			{
			while (c.offsetParent != null) {
                  	cy += c.offsetTop;
                  	cx += c.offsetLeft;
                  	c = c.offsetParent;
				}
			}
		arrHitTest[i][0] = cx + clickCell.offsetLeft;
		arrHitTest[i][1] = cy + clickCell.offsetTop;
		arrHitTest[i][2] = clickCell;
		arrHitTest[i][3] = cx + clickCell.offsetLeft + clickCell.offsetWidth;
		

		addEvent(clickCell,"mousedown",onMouseDown)
		clickCell.style.cursor="move";
	}
	
	//DRAG ELEMENT DEFINED HERE
	element=table
	//add Some event handlers to table  
	}
//END OF DRAG STUFF
	
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]);
    var itmHTML = table.rows[1].cells[column].innerHTML;
    sortfn = ts_sort_caseinsensitive;
    if (itmHTML.match(/checkbox/)) sortfn= ts_sort_checkbox;
    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;
    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;&nbsp;&uarr;';
        newRows.reverse();
        span.setAttribute('sortdir','up');
    } else {
        ARROW = '&nbsp;&nbsp;&darr;';
        span.setAttribute('sortdir','down');
    }
    
    
    // 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))) checkAppendChild(table.tBodies[0],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);
}


//IE has problems with checkboxes and appendChild
function checkAppendChild(src,child)
{
var strHTML=child.innerHTML;
if (strHTML.match(/type=\s*['"]?checkbox['"]?\s*/i))
//	{
	var inputs= new Array();
	inputs=child.getElementsByTagName("input");
	var checked=new Array();
//	for(var k=0;k<inputs.length;k++)
//	{
//		if (inputs[k].type.toLower!="checkbox")
//			{//inputs=inputs.splice(k,1);}
//	}
	if (inputs.length)
	{
		for(var k=0;k<inputs.length;k++)
			{checked[k]=inputs[k].checked;}
		src.appendChild(child);
		for(var k=0;k<inputs.length;k++)
			{inputs[k].checked=checked[k];}
	}
	else {src.appendChild(child);}
}


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 ts_sort_checkbox(a,b) {
     
    aa = a.cells[SORT_COLUMN_INDEX].getElementsByTagName('input');
    bb = b.cells[SORT_COLUMN_INDEX].getElementsByTagName('input');
    if (aa[0].checked == bb[0].checked ) return 0;
    if (aa[0].checked && ! bb[0].checked) 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");
  }
} 



//#########################################################################
//THE STUFF ABOVE WAS SORTABLE THE STUFF THAT FOLLOWS IS DRAGGABLE
//#########################################################################
function InitHeader()
{
  var cx=0;
  var cy=0;
  var c;
	 
  for (i=0; i<ColumnCount ; i++) {

	var clickCell = headRow.cells[i];
	clickCell.selectIndex = i;
	c = clickCell.offsetParent;
	cell=clickCell;
	var txt = ts_getInnerText(cell);
      cell.innerHTML = '<a href="#" alt="sort by this column"  class="sortheader" '+ 
      	'onclick="ts_resortTable(this, '+i+');return false;">' + 
      	txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>'; 
	if(cx == 0 && cy == 0 )
	{
		while (c.offsetParent != null) {
                  cy += c.offsetTop;
                  cx += c.offsetLeft;
                  c = c.offsetParent;
		}
	}

	arrHitTest[i][0] = cx + clickCell.offsetLeft;
	arrHitTest[i][1] = cy + clickCell.offsetTop;
	arrHitTest[i][2] = clickCell;
	arrHitTest[i][3] = cx + clickCell.offsetLeft + clickCell.offsetWidth;
  }
	 
}
function ChangeHeader(iChange)
{
	for(var y = 0; y < arrHitTest.length; y++)
	{
	if (arrHitTest[y][2].style.backgroundColor == dragColor)
		arrHitTest[y][2].style.backgroundColor = defaultTitleColor;
	}

	if(iChange == "-1") return; 

	arrHitTest[iChange][2].style.backgroundColor = dragColor;
}

function onSelect()
{
	//disable selection
	return false;
}


function onMouseUp(e)
{
	document.onmousemove=null;
	document.onmouseup=null;
	bDragMode = false;

	var iSelected = objDragItem.selectIndex;
	
	objDragItem.parentNode.removeChild(objDragItem);
	objDragItem = null;



	if( (iArrayHit - 1) < 0 || iSelected < 0) return;	// default faliure

	CopyRow(iSelected, (iArrayHit - 1) );

	// Reset our variables
	iSelected = 0;
	iArrayHit = -1;
}

function onMouseDown(e)
{

	//document.onselectstart=new Function ("return false") 
	bDragMode 	= true;
	if (e.preventDefault)
		{e.preventDefault();}
	var src= e.srcElement || e.currentTarget;
	var c =  e.srcElement || e.currentTarget;
	while (!(src.tagName == "TD" || src.tagName == "TH")) 
		src = src.parentElement;
	objDragItem = src.cloneNode(true)
	// Create our header on the fly
	objDragItem.style.position 	= "absolute";
 	objDragItem.style.borderStyle	= "outset";
	objDragItem.style.display	= "none";
	objDragItem.selectIndex=src.selectIndex 
	objDragItem=src.parentNode.appendChild(objDragItem);
	document.onmousemove=onMouseMove;
	document.onmouseup=onMouseUp;
	return false;
}

function onMouseMove(e)
{	
	if (typeof e == 'undefined') e = window.event;
	if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
	if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;


	//if(!bDragMode || !objDragItem) return;	// If we aren't dragging or our object
								// is null, we return
	// Hardcoded value for height difference
	var midWObj = objDragItem.style.posWidth / 2;
	var midHObj = 12;

	// Save mouse's position in the document
     var intTop = e.clientY + document.body.scrollTop ;
     var intLeft = e.clientX + document.body.scrollLeft;
	

	var cx=0,cy=0;
	var elCurrent= e.srcElement || e.target

	while (elCurrent.offsetParent)
	{

		elCurrent=elCurrent.offsetParent
		cx += elCurrent.offsetTop;
            cy += elCurrent.offsetLeft;
      }    
	
      objDragItem.style.top  = intTop - 20;
      objDragItem.style.left = intLeft - 20;
	//for (x in objDragItem) temp += x + ": " + objDragItem[x] + "\n"; alert (temp); 


	if(objDragItem.style.display == "none") objDragItem.style.display = "";

	iArrayHit = CheckHit(intTop , intLeft , e);

	return false;
}

function CheckHit(x,y,e)
{
	
	midWObj = objDragItem.style.posWidth / 2;
	midHObj = 12;
	if( ((x) > (arrHitTest[0][1] + 20) ) || ( (x) < (arrHitTest[0][1]) ) )
	{	
		ChangeHeader(-1);
		return -1;
	}

	for(var i=0; i < ColumnCount; i++)
	{
	
		
		if( (y) > (arrHitTest[i][0]) && (y) < (arrHitTest[i][3]  ))
		{
			
			ChangeHeader(i);
			return i + 1;
		}
	}
	ChangeHeader(-1);
	return -1;
}

//
// Copy from row to row.. Does the Header also.
//
function CopyRow(from, to)
{	
	if(from == to) return;
	

	var origfrom = from;
	var origto = to;
	var iDiff = 0;

	

	var saveObj = headRow.cells[from].innerHTML;
	var saveWidth 	= headRow.cells[from].width;
	headRow.cells[from].innerHTML = headRow.cells[to].innerHTML;
	headRow.cells[from].width = headRow.cells[to].width;
	headRow.cells[to].innerHTML 	= saveObj;
	headRow.cells[to].width = saveWidth;
	



	for(var i = 0 ; i < headRow.cells.length; i++)
			headRow.cells[i].selectIndex = i;



	
	for ( var iRowInsert = 1  ; iRowInsert < tbody.rows.length; iRowInsert++ )
	{
		from = origfrom;
		to = origto;
		saveObj=tbody.rows[iRowInsert].cells[from].innerHTML;
		tbody.rows[iRowInsert].cells[from].innerHTML = tbody.rows[iRowInsert].cells[to].innerHTML;
		tbody.rows[iRowInsert].cells[to].innerHTML = saveObj;

	}
	ChangeHeader(-1);
	InitHeader();
}