nl_tokens: Toggle the ui header between checked and unchecked state .
pl_tokens: function ( isChecked ) { var view = this . views [ 0 ] , headerCt = view . headerCt , checkHd = headerCt . <mask> ( 'gridcolumn[isCheckerHd]' ) , cls = this . checkerOnCls ; if ( checkHd ) { if ( isChecked ) { checkHd . addCls ( cls ) ; } else { checkHd . removeCls ( cls ) ; } } }