// $Abso: abso/divers/mat/ports/sorttable.js,v 1.2 2004/07/30 13:31:48 mat Exp $
/*
 * $Id: sorttable.js,v 1.1 2006/03/09 11:44:09 anbe Exp $
 *
 * Stolen from http://people.freebsd.org/~mat/sorttable.js
 * Then modified.
 *
 */

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 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 = txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span>';
	cell.className = 'sortheader';
	addEvent(cell, 'click', ts_resortTable, false);
    }
}

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() {
    var th;
    if (this.tagName) { // Mozilla
      th = this;
    } else if (event.srcElement) { // IE
      th = getParent(event.srcElement, 'th'); // Pas besoin de ça pour firefox parce que l'evenement n'existe que pour le th et donc, pas pour les sous elements
    }
    // get the span
    var span;
    for (var ci=0;ci<th.childNodes.length;ci++) {
        if (th.childNodes[ci].tagName && th.childNodes[ci].tagName.toLowerCase() == 'span') span = th.childNodes[ci];
    }
    var spantext = ts_getInnerText(span);
    var column = th.cellIndex;
    var table = getParent(th,'table');

    // Work out a type for the column
    if (table.rows.length <= 1) return;
    var itm = ts_getInnerText(table.rows[1].cells[column]);

    SORT_COLUMN_INDEX = column;
    var newRows = new Array();
	var sort_index = new Array();
	var sort_values = new Array();
    for (j=1;j<table.rows.length;j++) {
		sort_index[j-1] = j-1;
	}

	var fn_sort;
	var fn_prepare;
    if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d\d\d$/) || itm.match(/^\d\d[\/-]\d\d[\/-]\d\d$/)) {
		fn_prepare = function (a) {
			var dt1;
			var aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
			if (aa.length == 10) {
				dt1 = aa.substr(6,4)+aa.substr(3,2)+aa.substr(0,2);
			} else {
				var 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);
			}
			return dt1;
		};
		fn_sort = function (a,b) {
			if (sort_values[a] == sort_values[b])
				return 0;
			else if (sort_values[a] < sort_values[b])
				return -1;
			else
				return 1;
		};
    } else if (itm.match(/^[£$]/)) {
		fn_prepare = function(a) {
			return parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.]/g,''));
		};
		fn_sort = function (a,b) {
			return sort_values[a] - sort_values[b];
		};
	} else if (itm.match(/^\d+\.\d+\.\d+\.\d+$/)) {
		fn_prepare = function(a) {
			var aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
			var m = aa.match(/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/);
			if (!m || !m.length) {
				aa = 0;
			} else {
				aa = ((parseInt(m[1])*256 + parseInt(m[2]))*256 + parseInt(m[3]))*256 + parseInt(m[4]);
			}
			return aa;
		};
		fn_sort = function (a,b) {
			return sort_values[a] - sort_values[b];
		};
	} else if (itm.match(/^[\d\.]+$/)) {
		fn_prepare = function(a) {
			var aa = parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));
			if (isNaN(aa)) aa = 0;
			return aa;
		};
		fn_sort = function (a,b) {
			return sort_values[a] - sort_values[b];
		};
	} else {
		fn_prepare = function(a) {
			return ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).toLowerCase();
		};
		fn_sort = function (a,b) {
			if (sort_values[a] == sort_values[b])
				return 0;
			else if (sort_values[a] < sort_values[b])
				return -1;
			else
				return 1;
		};
	}

    for (j=1;j<table.rows.length;j++) {
		sort_values[j-1] = fn_prepare(table.rows[j]);
	}

	sort_index.sort(fn_sort);

    for (j=0;j<sort_index.length;j++) {
		newRows[j] = table.rows[sort_index[j]+1];
	}
		
    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))) 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]);}

	// if it's a shaded table, fixup class
	var shaded;
	for (i=1; i < table.rows.length; i++) {
		if (table.rows[i].className.indexOf('shaded') != -1) {
			shaded = 1;
			break;
		}
	}
	if (shaded) {
		shaded = 0;
		for (i=1; i < table.rows.length; i++) {
			var c = table.rows[i].className;
			c = c.replace(/\bshaded\b/, "");
			if (shaded)
				c = c + " shaded";
			table.rows[i].className = c;
			shaded = !shaded;
		}
	}

    // 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(th,"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 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");
  }
}