Difference between revisions of "MediaWiki:Common.js"

Revision as of 07:58, 30 December 2009

/* Any JavaScript here will be loaded for all users on every page load. */

/**
 * Tests if a particular element possesses a class.
 */
var hasClass = (function () {
    var reCache = {};
    return function (element, className) {
        return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);
    };
})();


/**
 * Code for sortable tables.
 */
var upArrow = "images/5/5b/Sort_up.gif";
var downArrow = "images/7/7a/Sort_down.gif";
var noneArrow = "images/e/e8/Sort_none.gif";

function sortTablesInit() {
	var idnum = 0;
	var tables = getElementsByClassName(document, "table", "sorts");

	for (var i = 0; i < tables.length; i++) {
		if (!tables[i].id) {
			tables[i].setAttribute("id", "sortable_table_id_" + idnum);
			++idnum;
		}
		makeSortable(tables[i]);
	}
}

function makeSortable(table) {
	var firstRow;

	if (table.rows && table.rows.length > 0) {
		if (table.tHead && table.tHead.rows.length > 0) {
			firstRow = table.tHead.rows[table.tHead.rows.length - 1];
		} else {
			firstRow = table.rows[0];
		}
	}

	if (!firstRow) {
		return;
	}

	for (var i = 0; i < firstRow.cells.length; i++) {
		var cell = firstRow.cells[i];
		if ((" "+cell.className+" ").indexOf(" unsortable ") == -1) {
			cell.innerHTML += '&nbsp;&nbsp;<a href="#" class="sortheader" onclick="ts_resortTable(this);return false;"><span class="sortarrow"><img src="'+ ts_image_path + ts_image_none + '" alt="&darr;"/></span></a>';
		}
	}
	alternate(table);
}

function getInnerText(el) {
	if (typeof el == "string" || typeof el = "undefined") {
		return el;
	}
	if (el.textContent) {
		return el.textContent;
	}
	if (el.innerText) {
		return el.innerText;
	}

	var innerText = "";
	var cs = el.childNodes;
	var l = cs.length;

	for (var i = 0; i < l; i++) {
		switch (cs[i].nodeType) {
			case 1: innerText += getInnerText(cs[i]); break;
			case 3:	innerText += cs[i].nodeValue; break;
		}
	}
	return innerText;
}

function reSortTable(lnk) {
	var span = lnk.getElementsByTagName('span')[0];
	var td = lnk.parentNode;
	var tr = td.parentNode;
	var column = td.cellIndex;
	var table = tr.parentNode;

	while (table && !(table.tagName && table.tagName.toLowerCase() == 'table'))
	{
		table = table.parentNode;
	}

	if (!table) {
		return;
	}
	if (table.rows.length <= 1) {
		return;
	}

	var rowStart = (table.tHead && table.tHead.rows.length > 0 ? 0 : 1);
	var itm = "";

	for (var i = rowStart; i < table.rows.length; i++) {
		if (table.rows[i].cells.length > column) {
			itm = getInnerText(table.rows[i].cells[column]);
			itm = itm.replace(/^[\s\xa0]+/, "").replace(/[\s\xa0]+$/, "");
			if (itm != "") {
				break;
			}
		}
	}

	sortfn = ts_sort_caseinsensitive;

	if (itm.match(/^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/)) {
		sortfn = ts_sort_date;
	}
	if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/)) {
		sortfn = ts_sort_date;
	}
	if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d$/)) {
		sortfn = ts_sort_date;
	}
	if (itm.match(/^[\u00a3$\u20ac]/)) {
		sortfn = ts_sort_currency;
	}
	if (itm.match(/^[\d.,]+\%?$/)) {
		sortfn = ts_sort_numeric;
	}

	var reverse = (span.getAttribute("sortdir") == 'down');
	var newRows = new Array();

	for (var j = rowStart; j < table.rows.length; j++) {
		var row = table.rows[j];
		var keyText = getInnerText(row.cells[column]);
		var oldIndex = (reverse ? -j : j);

		newRows[newRows.length] = new Array(row, keyText, oldIndex);
	}
	newRows.sort(sortfn);

	var arrowHTML;

	if (reverse) {
		arrowHTML = '<img src="'+ downArrow + '" alt="&darr;" />';
		newRows.reverse();
		span.setAttribute('sortdir','up');
	} else {
		arrowHTML = '<img src="'+ upArrow + '" alt="&uarr;" />';
		span.setAttribute('sortdir','down');
	}

	for (var i = 0; i < newRows.length; i++) {
		if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") == -1) {
			table.tBodies[0].appendChild(newRows[i][0]);
		}
	}

	for (var i = 0; i < newRows.length; i++) {
		if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") != -1) {
			table.tBodies[0].appendChild(newRows[i][0]);
		}
	}

	var spans = getElementsByClassName(tr, "span", "sortarrow");

	for (var i = 0; i < spans.length; i++) {
		spans[i].innerHTML = '<img src="'+ noneArrow + '" alt="&darr;"/>';
	}

	span.innerHTML = arrowHTML;
	alternate(table);		
}

function dateToSortKey(date) {
	if (date.length == 11) {
		switch (date.substr(3, 3).toLowerCase()) {
			case "jan": var month = "01"; break;
			case "feb": var month = "02"; break;
			case "mar": var month = "03"; break;
			case "apr": var month = "04"; break;
			case "may": var month = "05"; break;
			case "jun": var month = "06"; break;
			case "jul": var month = "07"; break;
			case "aug": var month = "08"; break;
			case "sep": var month = "09"; break;
			case "oct": var month = "10"; break;
			case "nov": var month = "11"; break;
			case "dec": var month = "12"; break;
		}
		return date.substr(7, 4) + month + date.substr(0, 2);
	} else if (date.length == 10) {
		if (ts_europeandate == false) {
			return date.substr(6, 4) + date.substr(0, 2) + date.substr(3, 2);
		} else {
			return date.substr(6, 4) + date.substr(3, 2) + date.substr(0, 2);
		}
	} else if (date.length == 8) {
		yr = date.substr(6, 2);
		if (parseInt(yr) < 50) { 
			yr = "20" + yr; 
		} else { 
			yr = "19" + yr; 
		}
		return yr + date.substr(0, 2) + date.substr(3, 2);
	}
	return "00000000";
}

function parseFloat(num) {
	if (!num) {
		return 0;
	}
	num = parseFloat(num.replace(/,/g, ""));
	return (isNaN(num) ? 0 : num);
}

function sortDate(a, b) {
	var aa = ts_dateToSortKey(a[1]);
	var bb = ts_dateToSortKey(b[1]);
	return (aa < bb ? -1 : aa > bb ? 1 : a[2] - b[2]);
}

function sortCurrency(a, b) {
	var aa = ts_parseFloat(a[1].replace(/[^0-9.]/g, ""));
	var bb = ts_parseFloat(b[1].replace(/[^0-9.]/g, ""));
	return (aa != bb ? aa - bb : a[2] - b[2]);
}

function sortNumeric(a, b) {
	var aa = ts_parseFloat(a[1]);
	var bb = ts_parseFloat(b[1]);
	return (aa != bb ? aa - bb : a[2] - b[2]);
}

function sortCaseInsensitive(a, b) {
	var aa = a[1].toLowerCase();
	var bb = b[1].toLowerCase();
	return (aa < bb ? -1 : aa > bb ? 1 : a[2] - b[2]);
}

function sortDefault(a, b) {
	return (a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : a[2] - b[2]);
}

function alternate(table) {
	var tableBodies = table.getElementsByTagName("tbody");
	for (var i = 0; i < tableBodies.length; i++) {
		var tableRows = tableBodies[i].getElementsByTagName("tr");
		for (var j = 0; j < tableRows.length; j++) {
			var oldClasses = tableRows[j].className.split(" ");
			var newClassName = "";
			for (var k = 0; k < oldClasses.length; k++) {
				if (oldClasses[k] != "" && oldClasses[k] != "even" && oldClasses[k] != "odd")
					newClassName += oldClasses[k] + " ";
			}
			tableRows[j].className = newClassName + (j % 2 == 0 ? "even" : "odd");
		}
	}
}

addOnloadHook(sortTablesInit);