Generates a CSS selector for the ribbons of a sankey, dependency wheel or
arc diagram series.
These series draw twice: SankeySeries#drawPoints runs the column
point-drawing pass over series.points (the links) and then again over
series.nodes, so the series group holds both, and a .highcharts-point
selector would return links plus nodes. SankeyPoint#getClassName marks
which is which — every link carries highcharts-link and every node
highcharts-node — so matching the link class alone returns exactly one
element per flow, in series.data order.
MAIDR's FlowTrace wants precisely that: its selector list is one entry per
flow, and the nodes highlight through the ribbons they touch rather than
through marks of their own.
Generates a CSS selector for the ribbons of a sankey, dependency wheel or arc diagram series.
These series draw twice:
SankeySeries#drawPointsruns the column point-drawing pass overseries.points(the links) and then again overseries.nodes, so the series group holds both, and a.highcharts-pointselector would return links plus nodes.SankeyPoint#getClassNamemarks which is which — every link carrieshighcharts-linkand every nodehighcharts-node— so matching the link class alone returns exactly one element per flow, inseries.dataorder.MAIDR's
FlowTracewants precisely that: its selector list is one entry per flow, and the nodes highlight through the ribbons they touch rather than through marks of their own.