problem description

if we try to add a custom event (e.g. right click) handler for Point by calling addExtraAttr(), it doesn't work. Since zk charts widget overrides all client listeners on a Point.

1. run the attached zul without the patch
2. right click a point

Current Result

no au requet sent to the server

Expected Result

a browser sends an au request to the server

Root Cause

• see the patch

debug info

• http://www.highcharts.com/plugin-registry/single/15/Custom-Events
• http://jsfiddle.net/BlackLabel/Utx8g/?utm_source=website&utm_medium=embed&utm_campaign=Utx8g