[Feature] emphasis full path of link/node from start to finish of chart

[ElayGelbart]

What problem does this feature solve?

for Sankey series, emphasis focus can have 4 options: "none" | "series" | "self" | "adjacency". i want to be able to focus all the path of connected edges and node from start to end of the selected edge\node and not only one depth before after

What does the proposed API look like?

new option for emphasis: "fullPath"

Example:

chart.setOption({
  series: [{
    type: 'sankey', 
   data: sankeyData.nodes,
   links: sankeyData.links,
   emphasis: {
     focus: "fullPath",
     }
  }]
});