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fxHeader_0.6.js
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fxHeader_0.6.js
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/*
* @Author Jaimon Mathew www.jaimon.co.uk
* Please see http://jaimonmathew.wordpress.com/2010/03/19/making-scrollable-tables-with-fixed-headers-updated-2/
*/
(function() {
var flag=false;
var tbl=new Array();
this.ge$=function(d) {return document.getElementById(d);}
this.scrollHeader = function(evt) {
if(flag) {
return;
}
var e=evt?evt:window.event;
var t=e.target?e.target:e.srcElement;
if (t.nodeType == 3) {
t = t.parentNode;
}
var tid=t.id.replace(':scroller','');
var fh=ge$(tid+':scroller:fx');
var sd=ge$(tid+':scroller');
fh.style.left=(0-sd.scrollLeft)+'px';
var cf=ge$(tid+'_CFB');
if(cf) {
var dmt=parseInt(cf.getAttribute('dmt'));
cf.style.marginTop=(0-(sd.scrollTop+dmt))+'px';
}
};
function gbw() {
return document.body.offsetWidth?document.body.offsetWidth:window.innerWidth;
}
function addScrollerDivs(tid,noOfCols) {
if(ge$(tid+':scroller')) {
return;
}
var tb=ge$(tid);
var tb2=tb.parentNode;
var ns=tb.nextSibling;
var sd=document.createElement("div");
sd.id=tid+':scroller';
sd.style.cssText = 'height:auto;overflow-x:auto;overflow-y:auto;width:auto;';
sd.onscroll=scrollHeader;
sd.appendChild(tb);
var sd2=document.createElement("div");
sd2.id=tid+':scroller:fx:OuterDiv';
sd2.style.cssText='position:relative;width:auto;overflow:hidden;overflow-x:hidden;padding:0px;margin:0px;';
sd2.innerHTML='<div id="' + tid + ':scroller:fx" style="text-align:left;position:relative;width:9999px;padding:0px;margin-left:0px;"><font size="3" color="red">Please wait while loading the table..</font></div>';
var fc=null;
if(noOfCols > 0) {
fc=document.createElement("div");
fc.id=tid+':scroller:fxcol';
fc.style.cssText='width:0px;height:auto;display:block;float:left;overflow:hidden;';
fc.innerHTML = "<div id='" + tid +":scroller:fxCH' style='width:100%;overflow:hidden;'> </div><div id='" + tid +":scroller:fxCB' style='width:100%;overflow:hidden;'> </div>";
}
if(ns) {
if(fc) tb2.insertBefore(fc, ns);
tb2.insertBefore(sd2, ns);
tb2.insertBefore(sd, ns);
}else {
if(fc) tb2.appendChild(fc);
tb2.appendChild(sd2);
tb2.appendChild(sd);
}
$("#user-grades:scroller:fxcol > input").tabIndex=-1;
}
// }
// }
this.fxheader = function() {
if(flag) {return;}
flag=true;
var perUsed=false;
for(var i=0;i<tbl.length;i++) {
var tbDiv=ge$(tbl[i].tid);
var w=tbl[i].swidth+'';
if(w.indexOf('%')>=0) {
perUsed=true;
var ttt=ge$(tbl[i].tid+':scroller:fx');
ttt.style.width='0px';
var twi=parseInt(w);
w=(gbw()*twi/100);
ttt.style.width='9999px';
}
//if ie6/7 then allow for 18px scrollbar area
tbDiv.style.width=(parseInt(w-18))+'px';
var fh=ge$(tbl[i].tid + ':scroller:fx');
fh.style.marginLeft='0px';
fh.style.display='';
var cn=fh.childNodes;
var j;
for(j=0;j<cn.length;j++) {
fh.removeChild(cn[j]);
}
var t=tbDiv.cloneNode(false);
t.id=tbl[i].tid+'__cN';
// these lines appear to want to place a sizeable geological fault at the header where everything almost right of the static columns moves up 20 px
// if(document.all) {
t.style.width=tbDiv.offsetWidth+'px';
// }else {
// t.style.width='auto';
// }
t.style.marginTop='0px';
t.style.marginLeft='0px';
var th=document.createElement("thead");
th.style.padding='0px';
th.style.margin='0px';
for(j=0;j<tbl[i].noOfRows;j++) {
var r=tbDiv.rows[j].cloneNode(true);
th.appendChild(r);
}
t.appendChild(th);
fh.appendChild(t);
var t2;
if(tbl[i].noOfCols > 0) {
t2=t.cloneNode(true);
t2.id=tbl[i].tid + '_CFH';
}
//adjusting widths
var tHeight=0;
for(j=0;j<tbl[i].noOfRows;j++) {
//var c=ge$(tbl[i].tid+'__cN').rows[j].cells;
var c=t.rows[j].cells;
var c2;
var oc=tbDiv.rows[j].cells;
var q;
if(t2) {
c2=t2.rows[j].cells;
for(q=0;q<c.length;q++) {
c[q].style.width=c2[q].style.width=(oc[q].offsetWidth-3) + 'px';
}
}else {
for(q=0;q<c.length;q++) {
c[q].style.width=(oc[q].offsetWidth-3) + 'px';
}
}
tHeight+=tbDiv.rows[j].offsetHeight;
}
tbDiv.style.marginTop = "-" + tHeight + "px";
var h=tbl[i].sheight;
if(tbDiv.offsetHeight < h) {
h=tbDiv.offsetHeight+18;
}
var cw=0;
//Column freezing
if(tbl[i].noOfCols > 0) {
for(j=0;j<tbl[i].noOfCols;j++) {
cw+=tbDiv.rows[0].cells[j].offsetWidth;
}
tbDiv.style.marginLeft = "-" + cw + "px";
tbDiv.style.display='block';
fh.style.marginLeft = "-" + cw + "px";
var fxcol=ge$(tbl[i].tid+':scroller:fxcol').style;
fxcol.width=(cw)+'px';
var fxCH=ge$(tbl[i].tid+':scroller:fxCH');
var fxCB=ge$(tbl[i].tid+':scroller:fxCB');
fxCH.innerHTML='';
fxCB.innerHTML='';
fxCH.appendChild(t2);
fxCH.style.height=tHeight+'px';
fxCB.style.height=(h-tHeight)+'px';
var t3=tbDiv.cloneNode(true);
t3.id=tbl[i].tid + '_CFB';
t3.style.marginLeft = "0px";
t3.setAttribute('dmt', tHeight);
fxCB.appendChild(t3);
}
w=(parseInt(w)-cw)+'px';
ge$(tbl[i].tid+':scroller').style.height=(h-tHeight) + 'px';
ge$(tbl[i].tid+':scroller').style.width=w;
ge$(tbl[i].tid+':scroller:fx:OuterDiv').style.height=tHeight + 'px';
ge$(tbl[i].tid+':scroller:fx:OuterDiv').style.width=w;
}
if(perUsed) {
window.onresize=fxheader;
}
flag=false;
}
this.fxheaderInit = function(_tid,_sheight,_noOfRows,_noOfCols) {
var IE = /*@cc_on!@*/false;
var tb = new Object();
var td=ge$(_tid);
tb.tid=_tid;
tb.sheight=_sheight;
tb.swidth=td.width;
if(!tb.swidth || tb.swidth.length==0) {
if (IE) {
tb.swidth='auto';
}
if(!tb.swidth || tb.swidth.length==0) {
tb.swidth=td.style.width;
// this line seems to split the table and make the scrollable portion go below the rest of the table
// if(!tb.swidth) tb.swidth = '100%';
if(tb.swidth.indexOf('%')==-1) {
tb.swidth = parseInt(tb.swidth);
}
}
}
tb.noOfRows=_noOfRows;
tb.noOfCols=_noOfCols;
addScrollerDivs(_tid,_noOfCols);
tbl[tbl.length]=tb;
};
})();