nl_tokens: Repositions the ink bar to the selected tab .
pl_tokens: function updateInkBarStyles ( ) { var elements = getElements ( ) ; if ( ! elements . tabs [ ctrl . selectedIndex ] ) { angular . element ( elements . inkBar ) . css ( { left : 'auto' , right : 'auto' } ) ; return ; } if ( ! ctrl . tabs . length ) return queue . push ( ctrl . updateInkBarStyles ) ; // if the element is not visible, we will not be able to calculate sizes until it is // we should treat that as a resize event rather than just updating the ink bar if ( ! $element . prop ( 'offsetParent' ) ) return handleResizeWhenVisible ( ) ; var index = ctrl . selectedIndex , totalWidth = elements . paging . offsetWidth , tab = elements . tabs [ index ] , left = tab . offsetLeft , right = totalWidth - left - tab . offsetWidth ; if ( ctrl . shouldCenterTabs ) { // We need to use the same calculate process as in the pagination wrapper, to avoid rounding deviations. var tabWidth = calcTabsWidth ( elements . tabs ) ; if ( totalWidth > tabWidth ) { $mdUtil . nextTick ( updateInkBarStyles , false ) ; } } updateInkBarClassName ( ) ; angular . element ( elements . inkBar ) . css ( { <mask> : left + 'px' , right : right + 'px' } ) ; }