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Dev: Refactor _fnBuildHead to be a good deal tidier and smaller

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- Saves about ~300 bytes on the min file.
This commit is contained in:
Allan Jardine 2013-06-21 11:37:20 +01:00
parent 95be4568eb
commit 81a76059ae
1 changed files with 53 additions and 80 deletions
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133
media/src/core/core.draw.js
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@ -95,111 +95,84 @@ function _fnCreateTr ( oSettings, iRow, nTrIn, anTds )
*/
function _fnBuildHead( oSettings )
{
var i, nTh, iLen, j, jLen;
var iThs = $('th, td', oSettings.nTHead).length;
var iCorrector = 0;
var jqChildren;
var i, ien, cell, row, column;
var thead = oSettings.nTHead;
var tfoot = oSettings.nTFoot;
var createHeader = $('th, td', thead).length === 0;
var classes = oSettings.oClasses;
var columns = oSettings.aoColumns;
/* If there is a header in place - then use it - otherwise it's going to get nuked... */
if ( iThs !== 0 )
{
/* We've got a thead from the DOM, so remove hidden columns and apply width to vis cols */
for ( i=0, iLen=columns.length ; i<iLen ; i++ )
{
nTh = columns[i].nTh;
nTh.setAttribute('role', 'columnheader');
if ( columns[i].bSortable )
{
nTh.setAttribute('tabindex', oSettings.iTabIndex);
nTh.setAttribute('aria-controls', oSettings.sTableId);
}
if ( columns[i].sClass !== null )
{
$(nTh).addClass( columns[i].sClass );
}
/* Set the title of the column if it is user defined (not what was auto detected) */
if ( columns[i].sTitle != nTh.innerHTML )
{
nTh.innerHTML = columns[i].sTitle;
}
}
}
else
{
/* We don't have a header in the DOM - so we are going to have to create one */
var nTr = document.createElement( "tr" );
for ( i=0, iLen=columns.length ; i<iLen ; i++ )
{
nTh = columns[i].nTh;
nTh.innerHTML = columns[i].sTitle;
nTh.setAttribute('tabindex', '0');
if ( columns[i].sClass !== null )
{
$(nTh).addClass( columns[i].sClass );
}
nTr.appendChild( nTh );
}
$(oSettings.nTHead).html( '' )[0].appendChild( nTr );
_fnDetectHeader( oSettings.aoHeader, oSettings.nTHead );
if ( createHeader ) {
row = $('tr').appendTo( thead );
}
/* ARIA role for the rows */
$(oSettings.nTHead).children('tr').attr('role', 'row');
for ( i=0, ien=columns.length ; i<ien ; i++ ) {
column = columns[i];
cell = $( column.nTh ).addClass( column.sClass );
if ( createHeader ) {
cell.appendTo( row );
}
// 1.11 move into sorting
if ( oSettings.oFeatures.bSort ) {
cell.addClass( column.sSortingClass );
if ( column.bSortable !== false ) {
cell
.attr( 'tabindex', oSettings.iTabIndex )
.attr( 'aria-controls', oSettings.sTableId );
_fnSortAttachListener( oSettings, column.nTh, i );
}
}
if ( column.sTitle != cell.html() ) {
cell.html( column.sTitle );
}
}
if ( createHeader ) {
_fnDetectHeader( oSettings.aoHeader, thead );
}
/* Add the extra markup needed by jQuery UI's themes */
if ( oSettings.bJUI )
{
for ( i=0, iLen=columns.length ; i<iLen ; i++ )
for ( i=0, ien=columns.length ; i<ien ; i++ )
{
nTh = columns[i].nTh;
cell = columns[i].nTh;
var nDiv = document.createElement('div');
nDiv.className = classes.sSortJUIWrapper;
$(nTh).contents().appendTo(nDiv);
$(cell).contents().appendTo(nDiv);
var nSpan = document.createElement('span');
nSpan.className = classes.sSortIcon+' '+columns[i].sSortingClassJUI;
nDiv.appendChild( nSpan );
nTh.appendChild( nDiv );
cell.appendChild( nDiv );
}
}
if ( oSettings.oFeatures.bSort )
{
for ( i=0 ; i<columns.length ; i++ )
{
$(columns[i].nTh).addClass( columns[i].sSortingClass );
if ( columns[i].bSortable !== false )
{
_fnSortAttachListener( oSettings, columns[i].nTh, i );
}
}
}
/* ARIA role for the rows */
$(thead).find('>tr').attr('role', 'row');
/* Deal with the footer - add classes if required */
$(oSettings.nTHead).find('>tr>th, >tr>td').addClass( classes.sHeaderTH );
$(oSettings.nTFoot).find('>tr>th, >tr>td').addClass( classes.sFooterTH );
$(thead).find('>tr>th, >tr>td').addClass( classes.sHeaderTH );
$(tfoot).find('>tr>th, >tr>td').addClass( classes.sFooterTH );
/* Cache the footer elements */
if ( oSettings.nTFoot !== null )
{
if ( tfoot !== null ) {
var anCells = _fnGetUniqueThs( oSettings, null, oSettings.aoFooter );
for ( i=0, iLen=columns.length ; i<iLen ; i++ )
{
if ( anCells[i] )
{
columns[i].nTf = anCells[i];
if ( columns[i].sClass )
{
$(anCells[i]).addClass( columns[i].sClass );
for ( i=0, ien=columns.length ; i<ien ; i++ ) {
column = columns[i];
if ( anCells[i] ) {
column.nTf = anCells[i];
if ( column.sClass ) {
$(anCells[i]).addClass( column.sClass );
}
}
}