/*----------------------------------------------------------------------------\ | Table Sort | |-----------------------------------------------------------------------------| | Created by Erik Arvidsson | | (http://webfx.eae.net/contact.html#erik) | | For WebFX (http://webfx.eae.net/) | |-----------------------------------------------------------------------------| | A DOM 1 based script that allows an ordinary HTML table to be sortable. | |-----------------------------------------------------------------------------| | Copyright (c) 1998 - 2002 Erik Arvidsson | |-----------------------------------------------------------------------------| | This software is provided "as is", without warranty of any kind, express or | | implied, including but not limited to the warranties of merchantability, | | fitness for a particular purpose and noninfringement. In no event shall the | | authors or copyright holders be liable for any claim, damages or other | | liability, whether in an action of contract, tort or otherwise, arising | | from, out of or in connection with the software or the use or other | | dealings in the software. | | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | This software is available under the three different licenses mentioned | | below. To use this software you must chose, and qualify, for one of those. | | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | The WebFX Non-Commercial License http://webfx.eae.net/license.html | | Permits anyone the right to use the software in a non-commercial context | | free of charge. | | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | The WebFX Commercial license http://webfx.eae.net/commercial.html | | Permits the license holder the right to use the software in a commercial | | context. Such license must be specifically obtained, however it's valid for | | any number of implementations of the licensed software. | | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | GPL - The GNU General Public License http://www.gnu.org/licenses/gpl.txt | | Permits anyone the right to use and modify the software without limitations | | as long as proper credits are given and the original and modified source | | code are included. Requires that the final product, software derivate from | | the original source or any software utilizing a GPL component, such as | | this, is also licensed under the GPL license. | |-----------------------------------------------------------------------------| | 1998-??-?? | First version | |-----------------------------------------------------------------------------| | Created 1998-??-?? | All changes are in the log above. | Updated 2001-??-?? | \----------------------------------------------------------------------------*/ var dom = (document.getElementsByTagName) ? true : false; var ie5 = (document.getElementsByTagName && document.all) ? true : false; var arrowUp, arrowDown; if (ie5 || dom) initSortTable(); function initSortTable() { arrowUp = document.createElement("IMG"); arrowUp.src = "images/arrow_up.gif"; arrowUp.className = "arrow"; //arrowUp.width=15; arrowDown = document.createElement("IMG"); arrowDown.src = "images/arrow_down.gif"; arrowDown.className = "arrow"; //arrowDown.width=15; } function sortTable(tableNode, nCol, bDesc, sType) { var tBody = tableNode.tBodies[0]; var trs = tBody.rows; var trl= trs.length; var a = new Array(); for (var i = 0; i < trl; i++) { a[i] = trs[i]; } var start = new Date; window.status = "Sorting data..."; a.sort(compareByColumn(nCol,bDesc,sType)); window.status = "Sorting data done"; for (var i = 0; i < trl; i++) { tBody.appendChild(a[i]); window.status = "Updating row " + (i + 1) + " of " + trl + " (Time spent: " + (new Date - start) + "ms)"; } // check for onsort if (typeof tableNode.onsort == "string") tableNode.onsort = new Function("", tableNode.onsort); if (typeof tableNode.onsort == "function") tableNode.onsort(); } function CaseInsensitiveString(s) { return String(s).toUpperCase(); } function parseDate(s) { return Date.parse(s.replace(/\-/g, '/')); } /* alternative to number function * This one is slower but can handle non numerical characters in * the string allow strings like the follow (as well as a lot more) * to be used: * "1,000,000" * "1 000 000" * "100cm" */ function toNumber(s) { return Number(s.replace(/[^0-9\.]/g, "")); } function compareByColumn(nCol, bDescending, sType) { var c = nCol; var d = bDescending; var fTypeCast = String; if (sType == "Number") fTypeCast = toNumber; else if (sType == "Date") fTypeCast = parseDate; else if (sType == "CaseInsensitiveString") fTypeCast = CaseInsensitiveString; return function (n1, n2) { if (fTypeCast(getInnerText(n1.cells[c])) < fTypeCast(getInnerText(n2.cells[c]))) return d ? -1 : +1; if (fTypeCast(getInnerText(n1.cells[c])) > fTypeCast(getInnerText(n2.cells[c]))) return d ? +1 : -1; return 0; }; } function sortColumnWithHold(e) { // find table element var el = ie5 ? e.srcElement : e.target; var table = getParent(el, "TABLE"); // backup old cursor and onclick var oldCursor = table.style.cursor; var oldClick = table.onclick; // change cursor and onclick table.style.cursor = "wait"; table.onclick = null; // the event object is destroyed after this thread but we only need // the srcElement and/or the target var fakeEvent = {srcElement : e.srcElement, target : e.target}; // call sortColumn in a new thread to allow the ui thread to be updated // with the cursor/onclick window.setTimeout(function () { sortColumn(fakeEvent); // once done resore cursor and onclick table.style.cursor = oldCursor; table.onclick = oldClick; }, 100); } function sortColumn(e) { var tmp = e.target ? e.target : e.srcElement; var tHeadParent = getParent(tmp, "THEAD"); var el = getParent(tmp, "TD"); if (tHeadParent == null) return; if (el != null) { var p = el.parentNode; var i; // typecast to Boolean el._descending = !Boolean(el._descending); if (tHeadParent.arrow != null) { if (tHeadParent.arrow.parentNode != el) { tHeadParent.arrow.parentNode._descending = null; //reset sort order } tHeadParent.arrow.parentNode.removeChild(tHeadParent.arrow); } if (el._descending) tHeadParent.arrow = arrowUp.cloneNode(true); else tHeadParent.arrow = arrowDown.cloneNode(true); el.appendChild(tHeadParent.arrow); // get the index of the td var cells = p.cells; var l = cells.length; for (i = 0; i < l; i++) { if (cells[i] == el) break; } var table = getParent(el, "TABLE"); // can't fail sortTable(table,i,el._descending, el.getAttribute("type")); } } function getInnerText(el) { if (ie5) 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 += getInnerText(cs[i]); break; case 3: //TEXT_NODE str += cs[i].nodeValue; break; } } return str; } 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); }