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

```
public interface BeforeTooltipDrawHook
```
Called before drawing the 'tooltip'.
If any plugin returns false, the tooltip drawing is cancelled until another 'render' is triggered.

Author:

Andrea "Stock" Stocchero

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`onBeforeTooltipDraw(IsChart chart, PluginTooltipArgument item)`	Called before drawing the 'tooltip'. If any plugin returns `false`, the tooltip drawing is cancelled until another 'render' is triggered.

- Method Detail
  - onBeforeTooltipDraw
```
boolean onBeforeTooltipDraw(IsChart chart,
                            PluginTooltipArgument item)
```
    Called before drawing the 'tooltip'.
    If any plugin returns false, the tooltip drawing is cancelled until another 'render' is triggered.
    
    Parameters:
    
    chart - the chart instance.
    
    item - The tooltip instance.
    
    Returns:
    
    false to cancel the chart tooltip drawing.