Bar chart: how to the series click event?

[lujuliang]

Please use this plunker http://next.plnkr.co/edit/ivdCyq5YFOk4yT1l4tK3?preview
Now the happy bar chart will hidden when I click the 'happy' button, and the hover displayed "Neutral" and "Unhappy" charts.
I just want to keep all series type charts when I click the 'happy' ,the happy chart keep display and only hover display "Neutral" and "Unhappy" charts.
Is there any way to implements this ? thank you.

[adripanico]

Without modifying the library itself, you need to do the follow:

1. Hide the chart legend and the chart tooltip
2. Create your own chart legend
3. Bind to the mouse-hover event of the chart and create your own tooltip