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

```
public interface ProgressCallback
```
Callback interface of ZoomPlugin.ID plugin that is called while the user is zooming or panning.

Author:

Andrea "Stock" Stocchero

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onProgress(ZoomContext context)
  Method called while the user is zooming or panning.

- Method Detail
  - onProgress
```
void onProgress(ZoomContext context)
```
    Method called while the user is zooming or panning.
    
    Parameters:
    
    context - ZoomPlugin.ID plugin context instance