Support Horizontal Legend Navigation

Expected behaviour

Highcharts has provided the legend.navigation API, which provides paging navigation when legend is overflown. e.g: http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/legend/navigation/

However, it currently only supports vertical paging navigation. In our product, UX team requires to display chart legends on top center of the chart, and when the legend overflows, provide left/right arrow keys to scroll the chart legends to the left/right.

See picture below:

Can we have this functionality?

Actual behaviour

http://jsfiddle.net/ny97hghx/

Affected browser(s)

All browsers