Function _fnSortingClasses

external/.datatables.js:5561–5586

* Set the sorting classes on table's body, Note: it is safe to call this function * when bSort and bSortClasses are false * @param {object} oSettings dataTables settings object * @memberof DataTable#oApi

(settings)

	 *  @memberof DataTable#oApi
	 */
	function _fnSortingClasses(settings) {
		var oldSort = settings.aLastSort
		var sortClass = settings.oClasses.order.position
		var sort = _fnSortFlatten(settings)
		var features = settings.oFeatures
		var i, ien, colIdx

		if (features.bSort && features.bSortClasses) {
			// Remove old sorting classes
			for (i = 0, ien = oldSort.length; i < ien; i++) {
				colIdx = oldSort[i].src

				// Remove column sorting
				$(_pluck(settings.aoData, "anCells", colIdx)).removeClass(sortClass + (i < 2 ? i + 1 : 3))
			}

			// Add new column sorting
			for (i = 0, ien = sort.length; i < ien; i++) {
				colIdx = sort[i].src

				$(_pluck(settings.aoData, "anCells", colIdx)).addClass(sortClass + (i < 2 ? i + 1 : 3))
			}
		}

		settings.aLastSort = sort
	}

	// Get the data to sort a column, be it from cache, fresh (populating the
	// cache), or from a sort formatter