EnterCallback (Charba - J2CL and GWT charts library based on CHART.JS)

```
public interface EnterCallback
```
Callback interface of AnnotationPlugin.ID plugin that is called once enter is fired.

Author:

Andrea "Stock" Stocchero

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onEnter(IsChart chart, AbstractAnnotation annotation, ChartEventContext event)`	Method called once enter is fired.

- Method Detail
  - onEnter
```
void onEnter(IsChart chart,
             AbstractAnnotation annotation,
             ChartEventContext event)
```
    Method called once enter is fired.
    
    Parameters:
    
    chart - chart instance
    
    annotation - annotation instance where event has been performed
    
    event - event instance